A kind of electric cylinder leak detection device

Abstract

The application discloses a kind of electric cylinder's liquid leakage detection device, it is related to oil cylinder detection device field, including electric cylinder body, the two ends of electric cylinder body are respectively provided with first connecting flange, second connecting flange, the side of first connecting flange away from electric cylinder body is fixedly connected with sealing ring body, the side of sealing ring body away from first connecting flange is fixedly connected with sponge suction ring, the bottom of sealing ring body is provided with collection device.The application carries out real-time detection to electric cylinder, after collecting the oil leaked in oil cylinder by the spherical air bag installed, the spherical air bag will expand, whether oil leakage occurs is detected by the expansion of spherical air bag, if oil leakage occurs, spherical air bag collects oil, after collection, spherical air bag expands, and arc tray and spherical air bag mutually adhere, can make spherical air bag maintain in spherical groove body and expand, avoid spherical air bag to occur in the process of expansion and shake.

Description

A leakage detection device for electric hydraulic cylinders Technical Field

[0001] This invention relates to the field of hydraulic cylinder detection devices, and particularly to a leakage detection device for electric hydraulic cylinders. Background Technology

[0002] Electric hydraulic cylinders convert the rotary motion of a motor into the linear motion of a push rod. Utilizing the closed-loop control characteristics of a servo motor, precise control of thrust, speed, and position can be easily achieved. They are characterized by simple structure and reliable operation. When using hydraulic cylinders to achieve reciprocating motion, a reduction gear is eliminated, and there is no transmission backlash, resulting in smooth movement. Therefore, they are widely used in various mechanical execution systems.

[0003] Some existing electric hydraulic cylinders can move linearly via push rods during use, which helps drive multiple sets of machinery to move simultaneously. Before use, it is necessary to check for oil leakage in the electric hydraulic cylinders. However, after long-term use, the sealing ring at the connection between the electric hydraulic cylinder and the push rod will wear down. After wear, the sealing ring will lose some of its sealing effect, causing oil leakage between the electric hydraulic cylinder and the push rod, resulting in oil consumption and affecting the normal use of the electric hydraulic cylinder.

[0004] Therefore, it is necessary to invent a leakage detection device for electric hydraulic cylinders to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a leakage detection device for electric hydraulic cylinders, in order to solve the problem that after prolonged use, the sealing ring at the connection between the electric hydraulic cylinder and the push rod will wear out, and after wear, the sealing ring will lose a certain sealing effect, causing oil leakage between the electric hydraulic cylinder and the push rod, resulting in oil consumption and affecting the normal use of the electric hydraulic cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a leakage detection device for an electric hydraulic cylinder, comprising an electric hydraulic cylinder body, wherein a first connecting flange and a second connecting flange are respectively provided at both ends of the electric hydraulic cylinder body, a sealing ring is fixedly connected to the side of the first connecting flange away from the electric hydraulic cylinder body, and a sponge suction ring is fixedly connected to the side of the sealing ring away from the first connecting flange.

[0007] A collecting device is provided at the bottom of the sealing ring. The collecting device includes a first connecting pipe, which is fixedly connected to the outer ring of the sealing ring. A spherical airbag is sleeved on the outer ring of the first connecting pipe. A spherical groove is formed inside the spherical airbag. A T-shaped groove is formed inside the spherical groove. A sealing circular plate is slidably connected inside the T-shaped groove. The lower surface of the sealing circular plate is in contact with the inner wall of the T-shaped groove. Two springs are fixedly connected to the upper surface of the sealing circular plate. The two springs are located on both sides of the top of the sealing circular plate and are fixedly connected to the T-shaped groove. A circular hole is formed at the center of the bottom of the spherical airbag. The circular hole communicates with the T-shaped groove. An arc-shaped tray is provided on the surface of the spherical airbag away from the electric cylinder body. The lower surface of the spherical airbag is in contact with the inner wall of the arc-shaped tray. A tray connecting column is fixedly connected to the center of the bottom of the arc-shaped tray. A lifting fixing column is provided inside the tray connecting column. The tray connecting column is slidably connected to the lifting fixing column.

[0008] A temperature sensor is connected inside the spherical airbag, and the inflation state of the spherical airbag can be adjusted according to the working state of the electric cylinder body.

[0009] Preferably, the top of the lifting and fixing column is provided with a drainage component, the drainage component including a conical push column, the conical push column being fixedly connected to the upper surface of the lifting and fixing column, and a plurality of magnetic blocks being arranged around the conical push column. The plurality of magnetic blocks are evenly fixedly connected to the upper surface of the lifting and fixing column along the axial direction of the lifting and fixing column, and a plurality of circular grooves are formed on the upper surface of the lifting and fixing column, the circular grooves being located between two magnetic blocks.

[0010] Preferably, an audible and visual alarm assembly is provided at the bottom of the outer ring of the first connecting flange. The audible and visual alarm assembly includes a support frame, which is fixedly connected to the bottom of the outer ring of the first connecting flange. Two support seats are fixedly connected to the side of the support frame away from the electric cylinder body. An alarm is fixedly connected to the bottom of the two support seats. A connecting plate is fixedly provided on the opposite side of the two support seats. The connecting plate is electrically connected to the alarm. A connecting seat is fixedly connected to the side of the connecting plate away from the support seat. A control button is slidably connected to the side of the connecting seat away from the connecting plate.

[0011] Preferably, an arc-shaped guide plate is fixedly connected to the end of the upper surface of the arc-shaped tray away from the first connecting flange. The arc-shaped guide plate is located below the sponge suction ring. Arc-shaped grooves are provided at both ends of the arc-shaped tray. The control button is located in the arc-shaped groove. A second connecting groove is provided at the center of the connection between the arc-shaped tray and the tray connecting column. A magnetic ring is fixedly connected to the inner wall of the second connecting groove. The magnetic ring is located around the top of the conical push column. The magnetic ring repels multiple magnetic blocks.

[0012] Preferably, the sealing ring body has a drainage groove inside, the first connecting pipe body has a first connecting groove inside, and the drainage groove, the first connecting groove, the spherical groove, the T-shaped groove, and the second connecting groove are interconnected.

[0013] Preferably, a second connecting pipe is fixedly connected to the end of the lifting fixing column away from the tray connecting column, an oil suction pump is fixedly connected to the end of the second connecting pipe away from the lifting fixing column, and a third connecting pipe is fixedly connected to the end of the oil suction pump away from the second connecting pipe. The third connecting pipe is fixedly connected to the outer ring of the electric cylinder body, and the interiors of the second connecting groove, the circular groove, the second connecting pipe, the oil suction pump, the third connecting pipe, and the electric cylinder body are interconnected.

[0014] Preferably, the first connecting flange and the second connecting flange are fixedly connected to both ends of the electric cylinder body by screws, and the second connecting flange is fixedly connected to a first fixing buckle on the side away from the electric cylinder body.

[0015] Preferably, the electric cylinder body has a cavity inside, and a piston is slidably connected inside the cavity. The piston and the side of the cavity near the second connecting flange form a first oil chamber, and the piston and the side of the cavity near the first connecting flange form a second oil chamber.

[0016] Preferably, a piston rod is fixedly connected to the side of the piston near the first connecting flange. The piston rod passes through the cavity, the electric cylinder body, the first connecting flange, the sealing ring, and the sponge suction ring, extending to the side of the sponge suction ring away from the first connecting flange. A second fixing buckle is fixedly connected to the side of the piston rod away from the piston.

[0017] Preferably, the outer ring of the piston rod is in contact with the inner ring of the sealing ring and the inner ring of the sponge suction ring, respectively.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. First, the spherical airbag is fitted onto the lower end of the first connecting pipe. Then, the electric cylinder is electrically connected to the power supply. During use, if the sealing ring at the connection between the piston rod and the first connecting flange wears down and loses its sealing function, oil leakage will occur between the first connecting flange and the piston rod. In order to monitor the electric cylinder in real time, the installed spherical airbag can collect the leaked oil in the cylinder. After collection, the spherical airbag will expand. Therefore, the expansion of the spherical airbag can be used to visually detect whether there is oil leakage between the first connecting flange and the piston rod. If there is oil leakage between the first connecting flange and the piston rod, the spherical airbag collects the oil. After collection, the spherical airbag expands. During the expansion process, the spherical airbag will push the arc-shaped tray vertically downward. The arc-shaped tray and the spherical airbag fit together, which can keep the spherical airbag in the spherical groove for expansion, preventing the spherical airbag from shaking during expansion and affecting the expansion of the spherical airbag from deviating from the vertical direction.

[0020] 2. When the spherical airbag collects excessive oil, it expands to a certain range. The sealing disc at the lower end of the spherical airbag will then come into contact with the upper surface of the lifting and fixing column in the leakage assembly. At this point, as the spherical airbag continues to expand, the lifting and fixing column will push the sealing disc into the interior of the spherical airbag, creating a gap between the sealing disc and the T-groove. The oil in the spherical airbag flows into the tray connecting column through the gap between the sealing disc and the T-groove, and then flows into the second connecting pipe through the groove on the lifting and fixing column. The oil pump then uses the third connecting pipe to pump the leaked oil back into the electric cylinder for continued use, preventing the leaked oil from affecting the normal operation of the electric cylinder and avoiding oil waste.

[0021] 3. When the leakage flow rate of the oil exceeds the leakage flow rate of the bleeder assembly, the spherical airbag will continue to expand. When the spherical airbag expands to a certain state, its outer surface will contact the control button. After contact, the spherical airbag will continue to expand, which can push the control button to move, making the alarm electrically connected to the power supply. The alarm will then alert the staff through sound and light, helping them to shut down the electric hydraulic cylinder in a timely manner. After shutting down the electric hydraulic cylinder, the sealing ring should be disassembled and replaced to solve the oil leakage problem of the electric hydraulic cylinder.

[0022] 4. When oil leakage occurs between the first connecting flange and the piston rod, a certain amount of oil will adhere to the outer ring of the piston rod. During the movement of the piston rod, the oil on the piston rod will be carried out from the inside of the electric cylinder. The sponge suction ring is in close contact with the outside of the piston rod. During the movement of the piston rod, it comes into contact with the sponge suction ring. The sponge suction ring can absorb the oil on the piston rod, preventing the oil from dripping and causing some waste. At the same time, when the piston rod returns to its original position after extension and retraction, the second fixing buckle on the piston rod squeezes the sponge suction ring, causing the oil in the sponge suction ring to drip off. The dripping oil slides down the arc-shaped guide plate into the tray connecting column, which helps the oil to move through the inside of the second connecting pipe to the electric cylinder for reuse.

[0023] 5. In this invention, the magnetic ring in the pallet connecting column and the magnetic block on the lifting fixing column have a certain repulsive force between them, so that the pallet connecting column is located above the lifting fixing column. When the spherical airbag expands, the expansion force of the spherical airbag is greater than the repulsive force between the magnetic ring and the magnetic block, and the arc-shaped pallet and the pallet connecting column are moved downward by the force. Attached Figure Description

[0024] Figure 1 is a schematic diagram of the electric hydraulic cylinder of the present invention from a first-view perspective.

[0025] Figure 2 is a schematic diagram of the electric hydraulic cylinder of the present invention from a second perspective.

[0026] Figure 3 is an enlarged structural diagram of point A in Figure 2 of this invention.

[0027] Figure 4 is a schematic diagram of the electric hydraulic cylinder of the present invention from a third-view perspective.

[0028] Figure 5 is a schematic diagram of the alarm device of the present invention.

[0029] Figure 6 is a first-view structural schematic diagram of the electric hydraulic cylinder of the present invention in half section.

[0030] Figure 7 is a schematic diagram of the electric hydraulic cylinder of the present invention from a second perspective.

[0031] Figure 8 is an enlarged structural diagram of point B in Figure 7 of this invention.

[0032] In the diagram: 1. Electric cylinder body; 101. Cavity; 2. First connecting flange; 3. Second connecting flange; 4. First fixing buckle; 5. Piston rod; 6. Second fixing buckle; 7. Sealing ring; 8. Sponge suction ring; 9. First connecting pipe; 10. Spherical airbag; 11. Arc-shaped tray; 12. Arc-shaped guide plate; 13. Arc-shaped groove; 14. Support frame; 15. Support base; 16. Alarm; 17. Connecting plate; 18. Connection 1801, Control button; 19, Tray connecting column; 20, Lifting fixing column; 2001, Second connecting pipe body; 21, Oil suction pump; 22, Third connecting pipe body; 23, Piston; 24, Drain groove; 25, First connecting groove; 26, Spherical groove; 27, T-shaped groove; 28, Spring; 29, Sealing circular plate; 30, Second connecting groove; 31, Magnetic ring; 32, Circular groove; 33, Magnetic block; 34, Conical push column. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides a leakage detection device for an electric hydraulic cylinder, as shown in Figures 1-8. The device includes an electric hydraulic cylinder body 1, with a first connecting flange 2 and a second connecting flange 3 at both ends. The first connecting flange 2 and the second connecting flange 3 are fixedly connected to both ends of the electric hydraulic cylinder body 1 by screws. A first fixing buckle 4 is fixedly connected to the side of the second connecting flange 3 away from the electric hydraulic cylinder body 1. A cavity 101 is formed inside the electric hydraulic cylinder body 1, and a piston 23 is slidably connected inside the cavity 101. The piston 23 and the side of the cavity 101 near the second connecting flange 3 form a first oil chamber, and the piston 23 and the side of the cavity 101 near the first connecting flange 2 form a second oil chamber. A sealing ring 7 is fixedly connected to the side of the first connecting flange 2 away from the electric hydraulic cylinder body 1, and a drainage groove 24 is formed inside the sealing ring 7. The first connecting flange 2 and the second connecting flange 3 serve as a connection, ensuring the airtightness of the electric hydraulic cylinder body 1.

[0035] When in use, the electric hydraulic cylinder can move linearly via a push rod, which helps drive multiple mechanical parts to move simultaneously. Before use, the electric hydraulic cylinder needs to be tested for oil leakage. However, after prolonged use, the sealing ring at the connection between the electric hydraulic cylinder and the push rod will wear down. After wear, the sealing ring will lose some of its sealing effect, causing oil leakage between the electric hydraulic cylinder and the push rod, resulting in oil consumption and affecting the normal operation of the electric hydraulic cylinder. Therefore, in this invention, a collecting device is provided at the bottom of the sealing ring 7. The collecting device includes a first connecting pipe 9, which serves as a connection. The first connecting pipe 9 is fixedly connected to the outer ring of the sealing ring 7. A spherical airbag 10, made of rubber, is sleeved on the outer ring of the first connecting pipe 9. When the hydraulic fluid in the electric cylinder leaks, the pressure generated by the movement of piston 23 causes the hydraulic fluid in the electric cylinder to flow into the spherical airbag 10, which then inflates. The spherical airbag 10 has an internal spherical groove 26 to hold the leaked fluid. Inside the spherical groove 26 is a T-shaped groove 27, and a sealing disc 29 is slidably connected inside the T-shaped groove 27. The lower surface of the sealing disc 29 is in contact with the inner wall of the T-shaped groove 27, maintaining the airbag 10's airtightness. Two springs 28 are fixedly connected to the upper surface of the sealing disc 29, serving a reset function. Under pressure, the two springs 28 are compressed. After the external force is removed, the springs 28 will push the sealing disc 29 back to its original position. The spherical airbag 10 is then sealed. Two springs 28 are located on both sides of the top of the sealing circular plate 29, and both springs 28 are fixedly connected to the T-shaped groove 27. A circular hole is opened at the center of the bottom of the spherical airbag 10, and the circular hole communicates with the T-shaped groove 27. An arc-shaped tray 11 is provided on the surface of the spherical airbag 10 away from the electric cylinder body 1. The lower surface of the spherical airbag 10 is in contact with the inner wall of the arc-shaped tray 11. A tray connecting column 19 is fixedly connected at the center of the bottom of the arc-shaped tray 11. A lifting fixing column 20 is provided inside the tray connecting column 19. The tray connecting column 19 is slidably connected to the lifting fixing column 20. During operation, the sealing ring at the connection between the piston rod 5 on the electric cylinder and the first connecting flange 2 is worn by the force and loses its sealing function. In this situation, oil leakage may occur between the first connecting flange 2 and the piston rod 5. The oil between the first connecting flange 2 and the piston rod 5 flows into the spherical airbag 10 through the drain groove 24 in the sealing ring 7. At this time, the electric cylinder is still in working condition. The electric cylinder generates a certain pressure through the movement of the piston 23, which allows the oil to gradually flow from the drain groove 24 into the spherical airbag 10. The spherical airbag 10 collects the leaked oil. After collecting the oil, the spherical airbag 10 gradually expands. During the expansion process, when the expansion force of the spherical airbag 10 exceeds the repulsive force between the magnetic ring 31 and the magnetic block 33, the spherical airbag 10 will push the arc-shaped tray 11 vertically downward. The tray connecting column 19 moves vertically following the direction of the arc-shaped tray 11.The arc-shaped tray 11 and the spherical airbag 10 fit together, allowing the spherical airbag 10 to expand within the spherical groove 26. This prevents the spherical airbag 10 from shaking during expansion, which could cause it to deviate from its vertical direction during expansion. When the spherical airbag 10 collects excessive oil, it expands to a certain range, and the sealing disc 29 at its lower end will then fit against the upper surface of the lifting fixing column 20 in the drainage assembly.

[0036] The spherical airbag 10 has limited space for oil collection. If a large amount of oil leaks, the spherical airbag 10 will reach its limit. To ensure that the spherical airbag 10 can be used for a long time, the top of the lifting and fixing column 20 in this invention is provided with a drainage component. The drainage component includes a conical push column 34, which is fixedly connected to the upper surface of the lifting and fixing column 20. Multiple magnetic blocks 33 are arranged around the conical push column 34. The magnetic blocks 33 have magnetic force. The multiple magnetic blocks 33 are evenly fixedly connected to the upper surface of the lifting and fixing column 20 along the axial direction of the lifting and fixing column 20. Multiple circular grooves 32 are opened on the upper surface of the lifting and fixing column 20. The circular grooves 32 are located between two magnetic blocks 33. During operation, when the spherical airbag 10 collects too much oil, the spherical airbag 10 will... When the airbag 10 inflates to a certain range, the sealing disc 29 at the lower end of the spherical airbag 10 will come into contact with the upper surface of the lifting and fixing column 20 in the venting assembly. At this time, when the spherical airbag 10 continues to inflate, the lifting and fixing column 20 will push the sealing disc 29 into the interior of the spherical airbag 10, creating a gap between the sealing disc 29 and the T-shaped groove 27. The oil in the spherical airbag 10 flows into the tray connecting column 19 through the gap between the sealing disc 29 and the T-shaped groove 27, and then flows into the second connecting pipe 2001 from the circular groove 32 opened on the lifting and fixing column 20. The oil pump 21 is used to pump the leaked oil back into the electric cylinder through the third connecting pipe 22 for continued use, avoiding the leakage of oil from affecting the normal use of the electric cylinder and also avoiding the waste of oil.

[0037] It should be noted that after the leakage detection device is used, when the sealing ring is replaced or the electric cylinder is repaired, the magnetic force between the magnetic ring 31 and the magnetic block 33 of the tray connecting column 19 will generate a repulsive force, which will drive the tray connecting column 19 to move vertically upward. The arc-shaped tray 11 will follow the direction of the tray connecting column 19 and move vertically upward. Under the elastic force of the spring 28, the sealing disc 29 under the spherical airbag 10 will be reset, so that the sealing disc 29 fits against the inner wall of the T-shaped groove 27, thereby ensuring the airtightness of the spherical airbag 10 and helping the spherical airbag 10 to be used again.

[0038] It should also be noted that when the lifting and fixing column 20 in the venting assembly pushes the sealing disc 29 into the interior of the spherical airbag 10, creating a gap between the sealing disc 29 and the T-groove 27, the spherical airbag 10 does not reach its limit value.

[0039] When the leakage flow rate of the leaking oil exceeds the leakage flow rate of the venting component, the spherical airbag 10 will continue to expand, eventually reaching its limit. To ensure the spherical airbag 10 can be used for a long time, an audible and visual alarm component is provided at the bottom of the outer ring of the first connecting flange 2 in this invention. The audible and visual alarm component includes a support frame 14, which is fixedly connected to the bottom of the outer ring of the first connecting flange 2. Two support seats 15 are fixedly connected to the side of the support frame 14 away from the electric cylinder body 1. An alarm 16 is fixedly connected to the bottom of the two support seats 15. A connecting plate 17 is fixedly provided on the opposite side of the two support seats 15. The connecting plate 17 is electrically connected to the alarm 16. A connecting seat 18 is fixedly connected to the side of the connecting plate 17 away from the support seat 15. A control button 1801 is slidably connected to the side of the connector 18 away from the connecting plate 17. The control button 1801 is located in the arc-shaped groove 13. During operation, the spherical airbag 10 inflates to a certain state, and the outer surface of the spherical airbag 10 contacts the control button 1801. After contact, the spherical airbag 10 continues to inflate, which can push the control button 1801 to move. After the control button 1801 is pushed, the alarm 16 is electrically connected to the power supply. After the alarm 16 is powered on, it will perform audible and visual alarm processing. The audible and visual alarm of the alarm 16 will alert the staff and help the staff to shut down the use of the electric hydraulic cylinder in time. After shutting down the electric hydraulic cylinder, the sealing ring of the electric hydraulic cylinder can be disassembled and replaced to solve the oil leakage problem of the electric hydraulic cylinder.

[0040] It should be noted that when the flow rate of the leaking oil exceeds the flow rate of the bleeder assembly, the spherical airbag 10 will continue to expand, energizing the alarm assembly to provide an audible and visual alarm for a certain period of time. During this period, the spherical airbag 10 will not reach its limit.

[0041] A sponge suction ring 8 is fixedly connected to the side of the sealing ring 7 away from the first connecting flange 2. An arc-shaped guide plate 12 is fixedly connected to the upper surface of the arc-shaped tray 11 away from the first connecting flange 2. The arc-shaped guide plate 12 is located below the sponge suction ring 8. Arc-shaped grooves 13 are provided at both ends of the arc-shaped tray 11. A second connecting groove 30 is provided at the center of the connection between the arc-shaped tray 11 and the tray connecting post 19. A first connecting groove 25 is provided inside the first connecting pipe body 9. Other components include a drain groove 24, a first connecting groove 25, a spherical groove 26, a T-shaped groove 27, and a second connecting groove. The internal interconnections of the second connecting groove 30 facilitate the movement of leaked oil and allow for its reuse. A magnetic ring 31 is fixedly connected to the inner wall of the second connecting groove 30. The magnetic ring 31 is circular and possesses a certain magnetic force. The magnetic ring 31 and the magnetic block 33 have the same magnetic poles. During use, there is a repulsive force between the magnetic ring 31 and the magnetic block 33. The magnetic ring 31 is located around the top of the conical push column 34, and it repels multiple magnetic blocks 33. In this invention, the magnetic ring 31 in the tray connecting column 19 and the lifting fixing column 2... The magnetic block 33 set on the 0 has a certain repulsive force between it and the magnetic block 33, so that the tray connecting column 19 is located above the lifting fixing column 20. When the spherical airbag 10 inflates, the expansion force of the spherical airbag 10 is greater than the repulsive force between the magnetic ring 31 and the magnetic block 33, and the arc-shaped tray 11 and the tray connecting column 19 are forced to move downward. During operation, if there is oil leakage between the first connecting flange 2 and the piston rod 5, a certain amount of oil will adhere to the outer ring of the piston rod 5. The oil on the piston rod 5 will be carried out from the inside of the electric cylinder during the movement, and the sponge suction ring 8 and The piston rod 5 fits tightly to the outside and comes into contact with the sponge suction ring 8 during its movement. The sponge suction ring 8 can absorb the oil on the piston rod 5, preventing the oil from dripping and causing some waste. At the same time, when the piston rod 5 returns to its original position after extension and retraction, the second fixing buckle 6 on the piston rod 5 squeezes the sponge suction ring 8, causing the oil in the sponge suction ring 8 to drip off. The dripping oil slides along the arc-shaped guide plate 12 into the tray connecting column 19, which helps the oil to move through the inside of the second connecting pipe 2001 to the electric cylinder for reuse.

[0042] The lifting fixing column 20 is fixedly connected to a second connecting pipe 2001 at one end away from the pallet connecting column 19. The second connecting pipe 2001 is fixedly connected to an oil suction pump 21 at one end away from the lifting fixing column 20. The oil suction pump 21 is fixedly connected to a third connecting pipe 22 at one end away from the second connecting pipe 2001. The third connecting pipe 22 is fixedly connected to the outer ring of the electric cylinder body 1. The second connecting groove 30, the circular groove 32, the second connecting pipe 2001, the oil suction pump 21, the third connecting pipe 22, and the interior of the electric cylinder body 1 are interconnected.

[0043] A piston rod 5 is fixedly connected to the side of piston 23 near the first connecting flange 2. The piston rod 5 passes through the cavity 101, the electric cylinder body 1, the first connecting flange 2, the sealing ring 7, and the sponge suction ring 8, extending to the side of the sponge suction ring 8 away from the first connecting flange 2. A second fixing buckle 6 is fixedly connected to the side of piston rod 5 away from piston 23. The outer ring of piston rod 5 is respectively in contact with the inner ring of sealing ring 7 and sponge suction ring 8.

[0044] A temperature sensor is connected inside the spherical airbag 10. This sensor detects and identifies the temperature of the hydraulic fluid entering the spherical airbag 10, thereby identifying the working state of the hydraulic oil inside the electric cylinder body 1. This allows for real-time monitoring of the conditions inside the electric cylinder body 1 via the spherical airbag 10. Based on the hydraulic temperature detected by the spherical airbag 10, it is important to note that during operation, the hydraulic fluid may atomize due to high temperature during piston 23 movement, and some of this atomized fluid may pass through the sealing ring. 7. The oil enters the spherical airbag 10. Simultaneously, due to the atomization and expansion of the oil, the volume of the spherical airbag 10 expands. The temperature sensor is used to identify the temperature of the atomized oil, thereby determining the working condition inside the electric cylinder body 1. This ensures the working stability of the electric cylinder body 1 and avoids the high internal oil temperature from affecting the service life of the electric cylinder body 1. It should be noted that at this time, because the oil is in an atomized state, it does not directly contact the wall of the spherical airbag 10, and the amount of atomized oil is small, so it will not trigger the alarm 16.

[0045] During use, the hydraulic cylinder body 1 experiences both internal and external oil leakage. The above description only addresses external leakage, not internal leakage. Therefore, the spherical airbag 10 adjusts its inflation based on the operating state of the hydraulic cylinder body 1. The movement of the piston rod 5 causes the spherical airbag 10 to expand. When the piston rod 5 is under normal operating pressure, the cavity 101 is completely filled with oil, and the movement of the piston rod 5 does not cause the spherical airbag 10 to expand, indicating that the hydraulic cylinder body 1 is in normal operating condition. When the piston rod 5 moves within the cavity 101, it causes the spherical airbag 10 to expand. If no oil enters during the expansion of the spherical airbag 10, or if the rate of oil entry does not match the expansion rate, it indicates that an oil cavity has formed inside the cavity 101. This means that the oil inside the cavity 101 is leaking internally. The more oil leaks inside the cavity 101, the greater the expansion of the spherical airbag 10. When the oil leaks into the dangerous range, the expansion of the spherical airbag 10 is directly affected by the gas. In this case, the expansion of the spherical airbag 10 can trigger the alarm 16 to sound, prompting the staff to repair the electric cylinder body 1 in time. It should be noted that when the oil leaks inside the cavity 101, the expansion of the spherical airbag 10 will not trigger the temperature sensor, thus preventing misjudgment by the staff and ensuring the accuracy of the detection.

[0046] Working principle: When the sealing ring at the connection between the piston rod 5 and the first connecting flange 2 on the electric hydraulic cylinder wears out due to stress and loses its sealing function, oil leakage will occur between the first connecting flange 2 and the piston rod 5. The oil between the first connecting flange 2 and the piston rod 5 flows into the spherical air bag 10 through the drain groove 24 in the sealing ring 7. At this time, the electric hydraulic cylinder is still in working condition. The electric hydraulic cylinder generates a certain pressure through the movement of the piston 23, which allows the oil to gradually flow from the drain groove 24 and the first connecting groove 25 into the spherical groove inside the spherical air bag 10. 26. At this time, the electric hydraulic cylinder is still in operation. The electric hydraulic cylinder generates a certain pressure through the movement of piston 23, and the electric hydraulic cylinder is in a leaking state. The oil in the electric hydraulic cylinder gradually flows from the drain groove 24 and the first connecting groove 25 into the spherical groove 26 inside the spherical airbag 10. The spherical airbag 10 collects the leaked oil. After collecting the oil, the volume of the oil causes the spherical airbag 10 to gradually expand. During the expansion process, when the expansion force of the spherical airbag 10 exceeds the repulsive force between the magnetic ring 31 and the magnetic block 33, the spherical airbag 10 will push the arc The curved tray 11 moves vertically downwards, and the tray connecting column 19 moves vertically following the direction of the curved tray 11. The magnetic ring 31 also moves vertically following the direction of the curved tray 11. After the spherical airbag 10 collects excess oil, it expands to a certain range. The sealing disc 29 at the lower end of the spherical airbag 10 will come into contact with the upper surface of the lifting fixing column 20 in the venting assembly. As the spherical airbag 10 continues to expand, the lifting fixing column 20 will push the sealing disc 29 into the interior of the spherical airbag 10, causing the sealing disc 29 to contact the T-groove 27. A gap is created between the two parts, and the oil in the spherical airbag 10 flows into the tray connecting column 19 through the gap between the sealing circular plate 29 and the T-shaped groove 27. The oil moves through the tray connecting column 19 to the circular groove 32 opened on the lifting fixing column 20 and flows into the second connecting pipe 2001. At this time, the suction pump 21 is electrically connected to the power supply. After the suction pump 21 is powered on, it generates suction force to adsorb the oil in the second connecting pipe 2001. The adsorbed oil flows back into the electric cylinder through the pressure in the suction pump 21 and the third connecting pipe 22 for continued use.

[0047] When the flow rate of the leaking oil exceeds the flow rate of the bleeder assembly, the spherical airbag 10 will continue to expand until it reaches its limit. The outer surface of the spherical airbag 10 will then contact the control button 1801. After contact, the spherical airbag 10 will continue to expand, which will push the control button 1801 to move. After the control button 1801 is pushed, the alarm 16 will be electrically connected to the power supply. After the alarm 16 is powered on, it will perform an audible and visual alarm, which will alert the staff.

[0048] Meanwhile, if there is oil leakage between the first connecting flange 2 and the piston rod 5, a certain amount of oil will adhere to the outer ring of the piston rod 5. During the movement of the piston rod 5, the oil on the piston rod 5 will be carried out from the inside of the electric cylinder. The sponge suction ring 8 is in close contact with the outside of the piston rod 5. During the movement of the piston rod 5, it comes into contact with the sponge suction ring 8. The sponge suction ring 8 can absorb the oil on the piston rod 5 to prevent the oil on the piston rod 5 from dripping and causing some waste. At the same time, when the piston rod 5 returns to its original position after extension and retraction, the second fixing buckle 6 on the piston rod 5 squeezes the sponge suction ring 8, causing the oil in the sponge suction ring 8 to drip. The dripping oil slides down the arc-shaped guide plate 12 into the tray connecting column 19, which helps the oil to move through the inside of the second connecting pipe 2001 to the electric cylinder for reuse.

[0049] After the leakage detection device is used, the staff replaces the sealing ring or repairs the electric cylinder. The magnetic force between the magnetic ring 31 and the magnetic block 33 of the tray connecting column 19 generates a repulsive force, which will drive the tray connecting column 19 to move vertically upward. The arc-shaped tray 11 moves vertically upward in the direction of the tray connecting column 19. The sealing disc 29 under the spherical airbag 10 is reset under the elastic force of the spring 28, so that the sealing disc 29 fits against the inner wall of the T-shaped groove 27, thereby ensuring the airtightness of the spherical airbag 10.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leakage detection device for an electric hydraulic cylinder, comprising an electric hydraulic cylinder body (1), characterized in that: The electric cylinder body (1) has a first connecting flange (2) and a second connecting flange (3) at its two ends respectively. A sealing ring (7) is fixedly connected to the side of the first connecting flange (2) away from the electric cylinder body (1), and a sponge suction ring (8) is fixedly connected to the side of the sealing ring (7) away from the first connecting flange (2). A collection device is provided at the bottom of the sealing ring (7). The collection device includes a first connecting pipe (9), which is fixedly connected to the outer ring of the sealing ring (7). A spherical airbag (10) is sleeved on the outer ring of the first connecting pipe (9). The spherical airbag (10) has a spherical groove (26) inside, and a T-shaped groove (27) inside the spherical groove (26). A sealing disc (29) is slidably connected inside the T-shaped groove (27). The lower surface of the sealing disc (29) is in contact with the inner wall of the T-shaped groove (27). Two springs (28) are fixedly connected to the upper surface of the sealing disc (29). The two springs (28) are located on both sides of the top of the sealing disc (29), and both springs (28) are fixedly connected to the T-shaped groove (27). A circular hole is opened at the center of the bottom of the spherical airbag (10). The circular hole is connected to the T-shaped groove (27). 7) The spherical airbag (10) is interconnected with the electric cylinder body (1) and an arc-shaped tray (11) is provided on the surface of the spherical airbag (10) away from the electric cylinder body (1). The lower surface of the spherical airbag (10) is in contact with the inner wall of the arc-shaped tray (11). A tray connecting column (19) is fixedly connected to the bottom center of the arc-shaped tray (11). A lifting fixing column (20) is provided inside the tray connecting column (19). The tray connecting column (19) is slidably connected to the lifting fixing column (20). A temperature sensor is connected inside the spherical airbag (10), and the spherical airbag (10) can adjust the temperature according to the working state of the electric cylinder body (1). The inflation state of the spherical airbag (10) is now adjusted; a drainage component is provided at the top of the lifting and fixing column (20), the drainage component includes a conical push column (34), the conical push column (34) is fixedly connected to the upper surface of the lifting and fixing column (20), a plurality of magnetic blocks (33) are provided around the conical push column (34), the plurality of magnetic blocks (33) are evenly fixedly connected to the upper surface of the lifting and fixing column (20) along the axial direction of the lifting and fixing column (20), a plurality of circular grooves (32) are opened on the upper surface of the lifting and fixing column (20), the circular grooves (32) are located between two magnetic blocks (33);An arc-shaped guide plate (12) is fixedly connected to the end of the upper surface of the arc-shaped tray (11) away from the first connecting flange (2). The arc-shaped guide plate (12) is located below the sponge suction ring (8). Arc-shaped grooves (13) are provided at both ends of the arc-shaped tray (11). A second connecting groove (30) is provided at the center of the connection between the arc-shaped tray (11) and the tray connecting column (19). A magnetic ring (31) is fixedly connected to the inner wall of the second connecting groove (30). The magnetic ring (31) is located around the top of the conical push column (34). The magnetic ring (31) repels the multiple magnetic blocks (33).

2. The leakage detection device for an electric hydraulic cylinder according to claim 1, characterized in that: An audible and visual alarm assembly is provided at the bottom of the outer ring of the first connecting flange (2). The audible and visual alarm assembly includes a support frame (14). The support frame (14) is fixedly connected to the bottom of the outer ring of the first connecting flange (2). Two support seats (15) are fixedly connected to the side of the support frame (14) away from the electric cylinder body (1). An alarm (16) is fixedly connected to the bottom of the two support seats (15). A connecting plate (17) is fixedly provided on the opposite side of the two support seats (15). The connecting plate (17) is electrically connected to the alarm (16). A connecting seat (18) is fixedly connected to the side of the connecting plate (17) away from the support seat (15). A control button (1801) is slidably connected to the side of the connecting seat (18) away from the connecting plate (17).

3. The leakage detection device for an electric hydraulic cylinder according to claim 2, characterized in that: The control button (1801) is located in the arc-shaped groove (13).

4. The leakage detection device for an electric hydraulic cylinder according to claim 1, characterized in that: The sealing ring (7) has a drainage groove (24) inside, and the first connecting pipe (9) has a first connecting groove (25) inside. The drainage groove (24), the first connecting groove (25), the spherical groove (26), the T-shaped groove (27), and the second connecting groove (30) are interconnected.

5. The leakage detection device for an electric hydraulic cylinder according to claim 4, characterized in that: The lifting fixing column (20) is fixedly connected to a second connecting pipe (2001) at one end away from the tray connecting column (19). The second connecting pipe (2001) is fixedly connected to an oil suction pump (21) at one end away from the lifting fixing column (20). The oil suction pump (21) is fixedly connected to a third connecting pipe (22) at one end away from the second connecting pipe (2001). The third connecting pipe (22) is fixedly connected to the outer ring of the electric cylinder body (1). The interiors of the second connecting groove (30), the circular groove (32), the second connecting pipe (2001), the oil suction pump (21), the third connecting pipe (22), and the electric cylinder body (1) are interconnected.

6. The leakage detection device for an electric hydraulic cylinder according to claim 1, characterized in that: The first connecting flange (2) and the second connecting flange (3) are fixedly connected to the two ends of the electric cylinder body (1) by screws respectively. The second connecting flange (3) is fixedly connected to the side away from the electric cylinder body (1) with a first fixing buckle (4).

7. The leakage detection device for an electric hydraulic cylinder according to claim 1, characterized in that: The electric cylinder body (1) has a cavity (101) inside, and a piston (23) is slidably connected inside the cavity (101). The piston (23) and the side of the cavity (101) near the second connecting flange (3) form a first oil chamber, and the piston (23) and the side of the cavity (101) near the first connecting flange (2) form a second oil chamber.

8. The leakage detection device for an electric hydraulic cylinder according to claim 7, characterized in that: The piston (23) is fixedly connected to a piston rod (5) on the side near the first connecting flange (2). The piston rod (5) passes through the cavity (101), the electric cylinder body (1), the first connecting flange (2), the sealing ring (7), and the sponge suction ring (8), extending to the side of the sponge suction ring (8) away from the first connecting flange (2). The piston rod (5) is fixedly connected to a second fixing buckle (6) on the side away from the piston (23).

9. The leakage detection device for an electric hydraulic cylinder according to claim 8, characterized in that: The outer ring of the piston rod (5) is in contact with the inner ring of the sealing ring (7) and the sponge suction ring (8).

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