An electric cylinder used in a wing opening system

Abstract

The present invention discloses an electric cylinder used in a wing opening system, which relates to the field of electric cylinders and solves the problem of troublesome lubricating oil replenishment in the prior art. It includes: a fixed plate, a sleeve is fixedly connected to the fixed plate, a threaded rod rotatably connected to the fixed plate is installed in the sleeve, a threaded sleeve is threadedly connected to the threaded rod, a sliding block slidably connected to the sleeve is fixedly connected to the outer side surface of the threaded sleeve, and a sliding sleeve sleeved on the outer side surface of the threaded rod is fixedly connected to the sliding block; through a lubricating component in the present invention, the lubricating oil in the lubricating component is connected to the threaded sleeve, and the lubricating sleeve is arranged in contact with the threaded rod. Therefore, when the threaded rod rotates, the threaded sleeve moves, and the movement of the threaded sleeve will drive the lubricating sleeve to move. Thus, the lubricating sleeve will move up and down along the threaded rod, and the lubricating oil inside the lubricating sleeve will coat the entire threaded rod. Therefore, through the cooperation of the lubricating sleeve and the feeding component, the threaded rod is automatically replenished with lubricating oil.

Description

Technical Field

[0001] The present invention relates to the field of electric cylinders, and particularly to an electric cylinder used in a wing-opening system. Background Art

[0002] The wing-opening system is a hydraulic system used for the two side walls of a van. Its main function is to facilitate loading and unloading equipment (such as forklifts, etc.) to directly perform cargo loading and unloading operations from both sides of the vehicle simultaneously, thereby greatly improving the transportation and loading / unloading efficiency. The wing-opening system is widely used in vehicles in the logistics industry such as logistics companies, manufacturing enterprises, food distribution, finance, post, department stores, etc.

[0003] Currently, electric cylinders are products specifically designed for continuous motion, low to high loads (usually at high speeds), and can be used repeatedly within their service life. These products have extremely high positioning accuracy and controllability, and can achieve precise motion control under loads ranging from several kilograms to 50 tons. Therefore, in the wing-opening system, electric cylinders are often used to push the device open. During the use of the electric cylinder, lubricating oil needs to be regularly replenished between the threaded rod and the threaded sleeve to reduce the friction between the threaded rod and the threaded sleeve, reduce the wear of the threaded rod and the threaded sleeve, and improve the efficiency of mechanical transmission. In the prior art, during the process of replenishing lubricating oil to the threaded rod, the operator needs to manually disassemble the sleeve in the electric cylinder and then spray lubricating oil on the threaded rod, which is troublesome to operate. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric cylinder used in a wing-opening system to solve the problems raised in the above background art.

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

[0006] An electric cylinder used in a wing opening system includes a fixed plate. A sleeve is fixedly connected to the fixed plate. A threaded rod rotatably connected to the fixed plate is installed inside the sleeve. A threaded sleeve is threadedly connected to the threaded rod. A sliding block fixedly connected to the outer side of the threaded sleeve is slidably connected to the sleeve. A sliding sleeve sleeved on the outer side of the threaded rod is fixedly connected to the sliding block. Since the sliding block is slidably connected to the sleeve, the sliding block can only slide up and down inside the sleeve and cannot rotate. Furthermore, through the limitation of the sliding block and the sleeve, when the threaded rod rotates, the sliding sleeve can be moved, ensuring that the sliding sleeve can freely rise and fall. A driving member is installed at the end of the threaded rod. Through the action of the driving member, a stable driving force can be provided for the rotation of the threaded rod. It further includes: a lubrication assembly for lubricating the threaded rod to ensure its transmission performance. The lubrication assembly is installed inside the threaded sleeve and fits the threaded rod. A feeding assembly for supplying lubricating oil to the lubrication assembly. The feeding assembly is installed on the fixed plate and is connected to the lubrication assembly. Through the action of the feeding assembly, sufficient lubricating oil is provided for the lubrication assembly. Through the action of the lubrication assembly, lubricating oil is supplied to the threaded rod, ensuring the transmission efficiency of the threaded rod and avoiding an increase in friction caused by a lack of lubricating oil between the threaded rod and the threaded sleeve, which affects the transmission efficiency.

[0007] Preferably, the lubrication assembly includes a lubricating sleeve installed inside the threaded sleeve. The lubricating sleeve is arranged to fit the threaded rod. The lubricating sleeve is stuck inside the threaded sleeve. The lubricating sleeve is a hollow cylinder, and the lubricating sleeve is movably connected to the threaded rod. An oil outlet hole is opened on the lubricating sleeve. Two groups of oil inlet pipes are communicated with the lubricating sleeve. The oil outlet hole is opened on the surface of the lubricating sleeve that fits the threaded rod. The other side of the lubricating sleeve is communicated with the oil inlet pipes. The end of the oil inlet pipe is communicated with an oil delivery pipe connected to the feeding assembly. The oil inlet pipe and the oil delivery pipe are arranged in an inserted manner. The oil inlet pipe moves with the movement of the threaded sleeve, but the oil delivery pipe is fixed inside the fixed plate. Therefore, the oil inlet pipe and the oil delivery pipe are inserted, which does not affect the movement of the oil inlet pipe following the threaded sleeve. A perforated fixed piece is fixedly connected inside the oil inlet pipe. The setting of the perforated fixed piece facilitates the outflow of lubricating oil through the holes. A first spring is fixedly connected to the perforated fixed piece. The end of the first spring is fixedly connected to a sealing block. The outer side of the sealing block is movably connected to a sealing ring fixedly connected to the oil inlet pipe. Through the action of the sealing block, the sealing pipe, and the spring, the end of the oil inlet pipe can be sealed. However, when the sealing block is extruded by the lubricating oil, the sealing block moves, enabling the lubricating oil to smoothly enter the oil inlet pipe.

[0008] Preferably, the feeding component includes an oil storage tank fixed to the fixing plate. A pressing plate is slidably connected inside the oil storage tank. A limiting column is fixed inside the oil storage tank, and the pressing plate is slidably connected to the limiting column. The lubricating oil is squeezed into the oil delivery pipe by the movement of the pressing plate. A tension spring fixedly connected to the oil storage tank is fixedly connected to the top end of the pressing plate. The tension spring helps the pressing plate to reset. Two sets of threaded blocks are slidably connected to the bottom end of the pressing plate. The two sets of threaded blocks are symmetrically arranged and fit together during the movement of the pressing plate. A moving member for driving the relative movement of the two sets of threaded blocks is connected to the threaded blocks. A threaded column threadedly connected to the threaded blocks is rotatably connected inside the oil storage tank. The end of the threaded column extends outside the oil storage tank and is fixedly connected with a ratchet and pawl structure. A rotating shaft is connected to the ratchet and pawl structure. A connecting shaft is installed at the bottom end position of the rotating shaft. The connecting shaft is connected to the driving member. A docking member for docking the rotating shaft and the connecting shaft is installed between the rotating shaft and the connecting shaft. The docking member is arranged in cooperation with the sliding block. The lubricating oil inside the oil storage tank is squeezed into the oil delivery pipe for transportation by the movement of the pressing plate.

[0009] Preferably, the docking member includes a movable column installed inside the threaded column. The movable column is movably connected to the threaded column, and a docking rod inserted into the connecting shaft is fixedly connected to the end of the movable column. The docking rod is installed inside the rotating shaft and is slidably connected to the rotating shaft. The end of the docking rod is tapered. During docking, the movement of the movable column drives the movement of the docking rod so that the docking rod is inserted into the connecting shaft. At this time, the rotation of the connecting shaft will drive the rotation of the rotating shaft through the docking rod. The other end of the movable column is rotatably connected to a connecting rod slidably connected to the sleeve. An extrusion block that is extrusion-fitted with the sliding block is fixedly connected to the end of the connecting rod. The movable column is also movably connected to the oil storage tank, and a second spring fixedly connected to the movable column is fixedly connected to the oil storage tank, facilitating the docking of the connecting shaft and the rotating shaft and enabling the connecting shaft to drive the rotating shaft to rotate.

[0010] Preferably, the moving member includes moving blocks fixedly connected to the two sets of threaded blocks respectively. Tapered grooves are formed in the two sets of moving blocks, and a fixed block extrusion-fitted with the tapered grooves is fixedly connected to the bottom end of the oil storage tank. Buffer members are connected to both sets of threaded blocks. The extrusion of the fixed block and the tapered grooves causes the two moving blocks to drive the two sets of threaded blocks to move simultaneously, so that the threaded blocks are disengaged from the threaded column, thereby facilitating the reset of the pressing plate.

[0011] Preferably, the buffer member includes a sliding column fixedly connected to the threaded block. A sleeve fixedly connected to the pressing plate is sleeved on the outer side of the sliding column. There are frictional forces and air pressure resistances between the sliding column and the sleeve. Therefore, during the resetting process of the sliding column, the sliding column will slowly drive the threaded block to reset, thereby leaving sufficient time for the pressing plate to reset. The sliding column is slidably connected to the sleeve, and a third spring fixedly connected to the sliding column is fixedly connected inside the sleeve. A plurality of groups of through holes are provided at both ends of the sleeve, facilitating the slow reset movement of the threaded block.

[0012] Preferably, a feed pipe is connected to the oil storage tank, and a sealing plug is threadedly connected to the feed pipe, facilitating the replenishment of lubricating oil inside the oil storage tank.

[0013] Preferably, the driving member includes a plurality of transmission wheels and a motor fixedly connected to the fixing plate. The plurality of transmission wheels are respectively connected to the threaded rod, the threaded column, and the motor. A transmission belt is drivingly connected to the outer side of the transmission wheel. The threaded rod and the threaded column are rotated by the action of the motor.

[0014] Preferably, anti-slip threads are provided on the outer side of the sealing plug to increase the frictional force during rotation, thereby facilitating the rotation of the sealing plug and facilitating the replenishment of lubricating oil inside the oil storage tank.

[0015] Preferably, a sealing ring is installed at the end of the oil delivery pipe. After the oil inlet pipe and the oil delivery pipe are butted, the sealing performance can be improved through the action of the sealing ring to avoid oil leakage.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the lubrication assembly of the present invention, the lubricating oil in the lubrication assembly is connected to the threaded sleeve, and the lubricating sleeve is arranged in contact with the threaded rod. Therefore, when the threaded rod rotates, the threaded sleeve moves, and the movement of the threaded sleeve will drive the lubricating sleeve to move. Therefore, the lubricating sleeve will move up and down along the threaded rod, and the lubricating oil inside the lubricating sleeve will coat the entire threaded rod. Therefore, through the cooperation of the lubricating sleeve and the feeding assembly, the threaded rod is automatically replenished with lubricating oil, thereby solving the problem of troublesome replenishment of lubricating oil in the prior art.

[0018] 2. For the feeding assembly of the present invention, during the lubrication process, the feeding assembly directly supplies materials to the lubrication assembly, so that the inside of the lubricating sleeve is always filled with lubricating oil. Thus, during the operation of the electric cylinder, the feeding assembly automatically supplies materials, and the lubrication assembly automatically lubricates, reducing the steps of manual lubrication, thereby improving efficiency and achieving the effect of making it easier to lubricate the threaded rod.

[0019] 3. Through the cooperation of the moving part and the buffer part, after the extrusion plate moves to the bottom end of the oil storage tank, the fixed block will squeeze the two moving blocks. After the two moving blocks move, they will drive the two threaded blocks away from the threaded column, so that the threaded column is disconnected from the threaded block. At this time, under the action of the buffer part, the threaded block will slowly reset and fit the threaded column, and the tension spring will pull the extrusion plate to quickly reset, thus achieving the effect of quickly resetting the extrusion plate and facilitating the replenishment of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the cross-sectional structure of the sleeve in the present invention;

[0022] Figure 3 is a schematic diagram of the partial cross-sectional structure of the present invention;

[0023] Figure 4 is a schematic diagram of the connection structure between the lubricating sleeve and the threaded sleeve in the present invention;

[0024] Figure 5 is a schematic diagram of the lubricating component structure of the present invention;

[0025] Figure 6 In the present invention Figure 5 is a schematic diagram of the structure of area A;

[0026] Figure 7 is a schematic diagram of the feeding component structure of the present invention;

[0027] Figure 8 is a schematic diagram of the docking component structure of the present invention;

[0028] Figure 9 In the present invention Figure 8 is a schematic diagram of the structure of area B.

[0029] In the figure: 1, fixed plate; 2, sleeve; 3, threaded rod; 4, threaded sleeve; 5, sliding block; 6, sliding sleeve; 7, lubricating sleeve; 8, oil outlet hole; 9, inlet pipe; 10, oil delivery pipe; 11, perforated fixing piece; 12, sealing block; 13, sealing ring; 14, first spring; 15, oil storage tank; 16, extrusion plate; 17, threaded column; 18, ratchet and pawl structure; 19, rotating shaft; 20, connecting shaft; 21, tension spring; 22, threaded block; 23, movable column; 24, docking rod; 25, connecting rod; 26, extrusion block; 27, second spring; 28, moving block; 29, conical groove; 30, fixed block; 31, sliding column; 32, sleeve; 33, third spring; 34, through hole; 35, feed pipe; 36, sealing plug; 37, motor; 38, transmission wheel; 39, transmission belt. DETAILED DESCRIPTION OF THE INVENTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 - 9 , an electric cylinder used in a wing opening system shown in the figure, including a fixed plate 1, a sleeve 2 fixedly connected to the fixed plate 1, a threaded rod 3 rotatably connected to the fixed plate 1 and installed in the sleeve 2, a threaded sleeve 4 threadedly connected to the threaded rod 3, a sliding block 5 fixedly connected to the outer side of the threaded sleeve 4 and slidably connected to the sleeve 2, and a sliding sleeve 6 fixedly connected to the sliding block 5 and sleeved on the outer side of the threaded rod 3. Since the sliding block 5 is slidably connected to the sleeve 2, the sliding block 5 can only slide up and down inside the sleeve 2 and cannot rotate. Furthermore, through the limitation of the sliding block 5 and the sleeve 2, the threaded rod 3 can move the sliding sleeve 6 when rotating, ensuring that the sliding sleeve 6 can freely rise and fall. A driving member is installed at the end of the threaded rod 3, and the driving member can provide a stable driving force for the rotation of the threaded rod 3; it further includes: a lubrication assembly for lubricating the threaded rod 3 to ensure its transmission performance, the lubrication assembly is installed in the threaded sleeve 4 and fits the threaded rod 3; a feeding assembly for supplying lubricating oil to the lubrication assembly, the feeding assembly is installed on the fixed plate 1 and connected to the lubrication assembly, and the feeding assembly supplies sufficient lubricating oil to the lubrication assembly, and the lubrication assembly supplies lubricating oil to the threaded rod 3 to ensure the transmission efficiency of the threaded rod 3, and avoid the increase of friction caused by the lack of lubricating oil between the threaded rod 3 and the threaded sleeve 4, which affects the transmission efficiency.

[0032] The lubrication assembly includes a lubrication sleeve 7 installed inside the threaded sleeve 4. The lubrication sleeve 7 is arranged in contact with the threaded rod 3. The lubrication sleeve 7 is stuck inside the threaded sleeve 4. The lubrication sleeve 7 is a hollow cylinder, and the lubrication sleeve 7 is movably connected to the threaded rod 3. An oil outlet hole 8 is formed in the lubrication sleeve 7. Two groups of oil inlet pipes 9 are connected to the lubrication sleeve 7. The oil outlet hole 8 is formed on the surface of the lubrication sleeve 7 in contact with the threaded rod 3. The other side of the lubrication sleeve 7 is connected to the oil inlet pipe 9. The end of the oil inlet pipe 9 is connected to an oil delivery pipe 10 connected to the feeding assembly. A sealing ring is installed at the end of the oil delivery pipe 10. After the oil inlet pipe 9 and the oil delivery pipe 10 are butted, the sealing performance can be improved through the action of the sealing ring to avoid oil leakage. The oil inlet pipe 9 and the oil delivery pipe 10 are arranged in an inserted manner. The oil inlet pipe 9 moves with the movement of the threaded sleeve 4, but the oil delivery pipe 10 is fixed inside the fixing plate 1. Therefore, the oil inlet pipe 9 and the oil delivery pipe 10 are in an inserted connection, which does not affect the movement of the oil inlet pipe 9 following the threaded sleeve 4. A perforated fixing piece 11 is fixedly connected inside the oil inlet pipe 9. The setting of the perforated fixing piece 11 facilitates the outflow of the lubricating oil through the holes. A first spring 14 is fixedly connected to the perforated fixing piece 11. The end of the first spring 14 is fixedly connected to a sealing block 12. The outer side of the sealing block 12 is movably connected to a sealing ring 13 fixedly connected to the oil inlet pipe 9. Through the action of the sealing block 12, the sealing pipe and the spring, the end of the oil inlet pipe 9 can be sealed. However, after the sealing block 12 is extruded by the lubricating oil, the sealing block 12 moves, enabling the lubricating oil to smoothly enter the oil inlet pipe 9;

[0033] In this embodiment, during the process of the threaded sleeve 4 moving to the bottom end of the sleeve 2, the feeding assembly delivers lubricating oil into the oil delivery pipe 10. The lubricating oil enters the oil inlet pipe 9 through the oil delivery pipe 10. The sealing block 12 is extruded by the lubricating oil, causing the sealing block 12 to move away from the sealing pipe. At this time, the lubricating oil enters the oil inlet pipe 9 through the gap between the sealing block 12 and the sealing pipe. The lubricating oil is delivered to the lubrication sleeve 7 through the oil inlet pipe 9. Then, the lubricating oil inside the lubrication sleeve 7 will be delivered to the outer side of the threaded rod 3 through the oil outlet hole 8. After that, the threaded rod 3 rotates to drive the threaded sleeve 4 to move upward. During the upward movement of the threaded sleeve 4, the lubrication sleeve 7 moves upward. During this process, the lubricating oil will follow the lubrication sleeve 7 to evenly coat the outer side of the threaded rod 3. Therefore, the threaded rod 3 is automatically lubricated, and the threaded rod 3 is accurately lubricated, reducing the input of lubricating oil and improving the transmission efficiency of the threaded rod 3.

[0034] The feeding component includes an oil storage tank 15 fixed on a fixed plate 1. A feed pipe 35 is connected to the oil storage tank 15. A sealing plug 36 is threadedly connected to the feed pipe 35. The outer side of the sealing plug 36 is provided with anti-slip threads to increase the friction during rotation, thereby facilitating the rotation of the sealing plug 36 and facilitating the replenishment of lubricating oil into the oil storage tank 15. A pressing plate 16 is slidably connected in the oil storage tank 15. Limit posts are fixed inside the oil storage tank 15, and the pressing plate 16 is slidably connected to the limit posts. The lubricating oil is squeezed into the oil delivery pipe 10 through the movement of the pressing plate 16. A tension spring 21 fixedly connected to the oil storage tank 15 is fixedly connected to the top end of the pressing plate 16. The tension spring 21 helps the pressing plate 16 to reset. Two groups of threaded blocks 22 are slidably connected to the bottom end of the pressing plate 16. The two groups of threaded blocks 22 are symmetrically arranged and fit together during the movement of the pressing plate 16. A moving member for driving the relative movement of the two groups of threaded blocks 22 is connected to the threaded block 22. A threaded column 17 threadedly connected to the threaded block 22 is rotatably connected inside the oil storage tank 15. The end of the threaded column 17 extends outside the oil storage tank 15 and is fixedly connected with a ratchet and pawl structure 18. A rotating shaft 19 is connected to the ratchet and pawl structure 18. A connecting shaft 20 is installed at the bottom end position of the rotating shaft 19. The connecting shaft 20 is connected to a driving member. A docking member for docking the rotating shaft 19 and the connecting shaft 20 is installed between the rotating shaft 19 and the connecting shaft 20. The docking member is arranged in cooperation with the sliding block 5. The lubricating oil inside the oil storage tank 15 is squeezed into the oil delivery pipe 10 through the movement of the pressing plate 16 for transportation.

[0035] The docking member includes a movable column 23 installed inside the threaded column 17. The movable column 23 is movably connected to the threaded column 17. The end of the movable column 23 is fixedly connected with a docking rod 24 inserted into the connecting shaft 20. The docking rod 24 is installed inside the rotating shaft 19 and is slidably connected to the rotating shaft 19. The end of the docking rod 24 is tapered. During docking, the movement of the movable column 23 drives the docking rod 24 to move so that the docking rod 24 is inserted into the connecting shaft 20. At this time, the rotation of the connecting shaft 20 will drive the rotating shaft 19 to rotate through the docking rod 24. The other end of the movable column 23 is rotatably connected to a connecting rod 25 slidably connected to the sleeve 2. The end of the connecting rod 25 is fixedly connected with a pressing block 26 that is press-fitted with the sliding block 5. The movable column 23 is also movably connected to the oil storage tank 15. A second spring 27 fixedly connected to the movable column 23 is fixedly connected to the oil storage tank 15, facilitating the docking of the connecting shaft 20 and the rotating shaft 19 and enabling the connecting shaft 20 to drive the rotating shaft 19 to rotate.

[0036] Embodiment 2: Please refer to Figures 7 - 9, this embodiment further illustrates the first embodiment. The moving member in the figure includes moving blocks 28 respectively fixedly connected to two groups of threaded blocks 22. Conical grooves 29 are formed in the two moving blocks 28, and a fixed block 30 which is arranged in extrusion fit with the conical grooves 29 is fixedly connected to the bottom end of the oil storage tank 15. Buffer members are connected to both groups of threaded blocks 22. The extrusion of the fixed block 30 and the conical grooves 29 causes the two moving blocks 28 to drive the two groups of threaded blocks 22 to move simultaneously. Therefore, the connection relationship between the threaded blocks 22 and the threaded columns 17 is disengaged, which facilitates the reset of the pressing plate 16;

[0037] The buffer member includes a sliding column 31 fixedly connected to the threaded block 22. A sleeve 32 fixedly connected to the pressing plate 16 is sleeved on the outer side of the sliding column 31. There are frictional forces and air pressure resistances between the sliding column 31 and the sleeve 32. Therefore, during the reset process of the sliding column 31, the sliding column 31 will slowly drive the threaded block 22 to reset, leaving sufficient time for the pressing plate 16 to reset. The sliding column 31 is slidably connected to the sleeve 32, and a third spring 33 fixedly connected to the sliding column 31 is fixedly connected inside the sleeve 32. A plurality of through holes 34 are formed at both ends of the sleeve 32, facilitating the slow reset movement of the threaded block 22.

[0038] Embodiment Three: Please refer to Figures 1 - 2 , this embodiment further illustrates other embodiments. The driving member in the figure includes multiple groups of transmission wheels 38 and a motor 37 fixedly connected to the fixing plate 1. The multiple groups of transmission wheels 38 are respectively connected to the threaded rod 3, the threaded column 17, and the motor 37. A transmission belt 39 is drivingly connected to the outer side of the transmission wheel 38. The rotation of the threaded rod 3 and the threaded column 17 is caused by the action of the motor 37.

[0039] Working principle: During the process of the electric cylinder running to drive the sliding sleeve 6 to extend, the driving part runs forward to make the threaded rod 3 rotate forward. At this time, the rotation of the threaded rod 3 drives the threaded sleeve 4 and the fixed block 30 to move. Through the movement of the sliding block 5, the sliding sleeve 6 extends. When the driving part runs in the reverse direction, the threaded rod 3 will rotate in the reverse direction. At this time, the threaded sleeve 4 drives the sliding block 5 to move in the reverse direction. During the process of the sliding block 5 moving downward in the reverse direction, it will squeeze the extrusion block 26, causing the extrusion block 26 to move downward. Through the downward movement of the extrusion block 26, the connecting rod 25 will be driven to move downward. Subsequently, the downward movement of the connecting rod 25 will cause the movable column 23 to move. Through the movement of the movable column 23, the docking rod 24 will be driven to move. After the docking rod 24 moves, it will be inserted into the connecting shaft 20. At this time, the rotation of the connecting shaft 20 will drive the rotating shaft 19 to rotate through the action of the docking rod 24. At this time, the rotating shaft 19 rotates in the reverse direction. Furthermore, after the rotating shaft 19 rotates, it will cause the threaded column 17 to rotate through the action of the ratchet and pawl structure 18. Through the rotation of the threaded column 17, the extrusion plate 16 will be driven to move through the threaded block 22. Through the movement of the extrusion plate 16, the lubricating oil inside the oil storage tank 15 will be squeezed into the oil delivery pipe 10, and then transported to the inside of the oil inlet pipe 9 through the oil delivery pipe 10. After that, through the action of the lubricating oil, the sealing block 12 will be squeezed, causing the sealing block 12 to move away from the sealing pipe. At this time, the lubricating oil enters the oil inlet pipe 9 through the gap between the sealing block 12 and the sealing pipe. Through the action of the oil inlet pipe 9, the lubricating oil is transported to the lubricating sleeve 7. Then, the lubricating oil inside the lubricating sleeve 7 will be transported to the outer side of the threaded rod 3 through the oil outlet hole 8. After that, the driving part rotates forward again to extend the sliding sleeve 6. At this time, the rotation of the threaded rod 3 drives the threaded sleeve 4 to move upward. During the process of the threaded sleeve 4 moving upward, the lubricating sleeve 7 moves upward. During this process, the lubricating oil will follow the lubricating sleeve 7 to evenly apply the lubricating oil on the outer side of the threaded rod 3. Therefore, during the operation of the electric cylinder, the threaded rod 3 is automatically replenished with lubricating oil, improving the work efficiency. And this solution accurately lubricates the threaded rod 3, reduces the input of lubricating oil, and improves the transmission efficiency of the threaded rod 3.

[0040] It should be noted that: During the process of the driving part just resuming forward rotation, the docking rod 24 has not yet separated from the connecting shaft 20. At this time, the rotation of the connecting shaft 20 drives the rotating shaft 19 to rotate forward through the docking rod 24. At this time, the rotating shaft 19 will not drive the ratchet and pawl structure 18 to operate due to forward rotation. Therefore, the threaded column 17 will not rotate, so that the extrusion plate 16 will not move in the reverse direction. That is, during the forward rotation of the driving part, the extrusion plate 16 will not move. Only after the docking rod 24 is inserted into the connecting shaft 20 and the driving part runs in the reverse direction, will the extrusion plate 16 move to squeeze the lubricating oil into the oil delivery pipe 10.

[0041] During the downward movement of the sliding block 5, the sliding block 5 will extrude the extrusion block 26. By extruding the extrusion block 26, the connecting rod 25 drives the movable column 23 to move. Through the movement of the movable column 23, the docking rod 24 is driven to move. After the docking rod 24 moves, the docking rod 24 is inserted into the internal part of the connecting shaft 20. At this time, the start of the driving part causes the connecting shaft 20 to rotate. Furthermore, through the action of the connecting shaft 20, the docking rod 24 drives the rotating shaft 19 to rotate. Therefore, the ratchet and pawl structure 18 is driven to operate. The ratchet and pawl structure 18 in this solution is a common structure in the prior art. During this process, the rotating shaft 19 drives the ratchet wheel and the pawl to rotate, and then drives the threaded column 17 to rotate. Through the rotation of the threaded column 17, the pressing plate 16 is driven to move by the threaded block 22. Through the movement of the pressing plate 16, the lubricating oil inside the oil storage tank 15 is extruded into the oil delivery pipe 10, and then is transported to the inside of the oil inlet pipe 9 through the oil delivery pipe 10.

[0042] When the pressing plate 16 continuously moves to the bottom position of the oil storage tank 15, the moving block 28 is extruded through the action of the fixed block 30 and the conical groove 29. Through the extrusion, the two groups of moving blocks 28 drive the two groups of threaded blocks 22 to move. After the threaded blocks 22 move, the threaded column 17 is disengaged from the threaded block 22. Furthermore, through the action of the tension spring 21, the pressing plate 16 is driven to reset, which is convenient for replenishing the lubricating oil. During this process, the sliding column 31 is driven to move through the movement of the threaded block 22. And because of the reset of the pressing plate 16, the fixed block 30 is disengaged from the extrusion fit of the moving block 28. At this time, the sliding column 31 will reset due to the action of the third spring 33. There is friction between the sliding column 31 and the sleeve 32, and when the sliding column 31 resets, there will also be air pressure resistance between the sliding column 31 and the sleeve 32. Therefore, the sliding column 31 resets relatively slowly, which ensures that there is sufficient time for the pressing plate 16 to reset. After the pressing plate 16 resets, the two groups of threaded blocks 22 are closed again and restored to the threaded connection relationship with the threaded rod 3, and then the equipment operates normally.

[0043] During the normal operation of the electric cylinder, the motor 37 rotates forward. When the motor 37 rotates forward, it drives the threaded rod 3 to rotate forward through the action of the transmission wheel 38 and the transmission belt 39. After that, through the forward rotation of the threaded rod 3, the threaded sleeve 4 is driven to move upward, and then drives the sliding block 5 and the sliding sleeve 6 to move upward. When the motor 37 rotates in the reverse direction, the threaded rod 3 is driven to rotate in the reverse direction through the action of the transmission wheel 38 and the transmission belt 39. At this time, the threaded sleeve 4 drives the sliding block 5 and the sliding sleeve 6 to move in the reverse direction.

[0044] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric cylinder used in a wing opening system, characterized in that, Comprising: A fixed plate, on which a sleeve is fixedly connected. A threaded rod rotatably connected to the fixed plate is installed inside the sleeve. A threaded sleeve is threadedly connected to the threaded rod. A sliding block slidably connected to the sleeve is fixedly connected to the outer side of the threaded sleeve. A sliding sleeve sleeved on the outer side of the threaded rod is fixedly connected to the sliding block. A driving member is installed at the end of the threaded rod. Also comprising: A lubrication assembly for lubricating the threaded rod to ensure its transmission performance. The lubrication assembly is installed inside the threaded sleeve and fits against the threaded rod. A feeding assembly for supplying lubricating oil to the lubrication assembly. The feeding assembly is installed on the fixed plate and is connected to the lubrication assembly. The feeding assembly includes an oil storage tank fixed to the fixed plate. An extrusion plate is slidably connected inside the oil storage tank. A tension spring fixedly connected to the oil storage tank is fixedly connected to the top end of the extrusion plate. Two groups of threaded blocks are slidably connected to the bottom end of the extrusion plate. A moving member for driving the two groups of threaded blocks to move relatively is connected to the threaded blocks. And a threaded column threadedly connected to the threaded blocks is rotatably connected inside the oil storage tank. The end of the threaded column extends outside the oil storage tank and is fixedly connected with a ratchet and pawl structure. A rotating shaft is connected to the ratchet and pawl structure. A connecting shaft is installed at the bottom end position of the rotating shaft. The connecting shaft is connected to the driving member. A docking member for docking the rotating shaft and the connecting shaft is installed between the rotating shaft and the connecting shaft. The docking member is arranged in cooperation with the sliding block. The moving member includes moving blocks fixedly connected to the two groups of threaded blocks respectively. Conical grooves are formed inside the two groups of moving blocks. And a fixed block arranged in extrusion fit with the conical grooves is fixedly connected to the bottom end of the oil storage tank. Buffer members are connected to both groups of threaded blocks. The buffer member includes a sliding column fixedly connected to the threaded block. A sleeve fixedly connected to the extrusion plate is sleeved on the outer side of the sliding column. The sliding column is slidably connected to the sleeve. And a third spring fixedly connected to the sliding column is fixedly connected inside the sleeve. A plurality of groups of through holes are formed at both ends of the sleeve.

2. The electric cylinder used in a wing opening system according to claim 1, characterized in that: The lubrication assembly includes a lubricating sleeve installed inside the threaded sleeve. The lubricating sleeve fits against the threaded rod and is movably connected to the threaded rod. Oil outlet holes are formed on the lubricating sleeve. Two groups of inlet pipes are communicated with the lubricating sleeve. The end of the inlet pipe is communicated with an oil delivery pipe connected to the feeding assembly. The inlet pipe and the oil delivery pipe are inserted and arranged. And a perforated fixing piece is fixedly connected inside the inlet pipe. A first spring is fixedly connected to the perforated fixing piece. A sealing block is fixedly connected to the end of the first spring. The outer side of the sealing block is movably connected to a sealing ring fixedly connected to the inlet pipe.

3. An electric cylinder used in a wing opening system according to claim 2, characterized in that: The docking member includes a movable column installed inside the threaded column. The movable column is movably connected to the threaded column. And a docking rod inserted into the connecting shaft is fixedly connected to the end of the movable column. The docking rod is installed inside the rotating shaft and is slidably connected to the rotating shaft. The other end of the movable column is rotatably connected to a connecting rod slidably connected to the sleeve. An extrusion block arranged in extrusion fit with the sliding block is fixedly connected to the end of the connecting rod. The movable column is also movably connected to the oil storage tank. And a second spring fixedly connected to the movable column is fixedly connected to the oil storage tank.

4. An electric cylinder used in a wing opening system according to claim 1, characterized in that: A feed pipe is communicated with the oil storage tank. A sealing plug is threadedly connected to the feed pipe.

5. An electric cylinder used in a wing opening system according to claim 1, characterized in that: The driving member includes multiple sets of transmission wheels and a motor fixedly connected to the fixing plate. The multiple sets of transmission wheels are respectively connected to the threaded rod, the threaded column and the motor, and the outer side surface of the transmission wheel is drivingly connected with a transmission belt.

6. An electric cylinder used in a wing opening system according to claim 4, characterized in that: The outer side surface of the sealing plug is provided with anti-slip lines.

7. An electric cylinder used in a wing opening system according to claim 2, characterized in that: A sealing ring is installed at the end of the oil pipeline.

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