Heavy-load electric cylinder actuating mechanism with bidirectional overload clutch protection

Abstract

The invention relates to the technical field of electric cylinders, and provides a heavy-load electric cylinder actuating mechanism with bidirectional overload clutch protection, the heavy-load electric cylinder actuating mechanism with bidirectional overload clutch protection comprises an electric cylinder main body, and a motor is fixedly mounted on the surface of the electric cylinder main body. A threaded shaft rotatably penetrates through the inner wall of the electric cylinder body, and a material pushing shaft is slidably mounted on the inner wall of the electric cylinder body. According to the heavy-load electric cylinder executing mechanism with the bidirectional overload clutch protection, the clutch chuck II moves downwards to be disengaged from the clutch chuck I, at the moment, power transmission to the threaded shaft is cut off, and the material pushing shaft is slidably mounted on the inner wall of the electric cylinder body; clutch protection of the electric cylinder is achieved, breakage or deformation caused by over-torque and over-current is avoided, the service life of key components of equipment is prolonged, and the technical problem that in the prior art, in the operation process of the electric cylinder, due to the fact that the electric cylinder cannot bear high mechanical loads, negative influences on internal components of the electric cylinder to a certain degree are easily caused is solved.

Description

Technical Field

[0001] This invention relates to the field of electric cylinder technology, and more specifically, to a heavy-duty electric cylinder actuator with bidirectional overload clutch protection. Background Technology

[0002] A heavy-duty electric cylinder with bidirectional overload clutch protection is an electric drive device used to handle large loads and requires overload protection in both directions. This type of electric cylinder is designed to withstand high mechanical loads and automatically cuts off power through the clutch system in case of overload, protecting the equipment from damage.

[0003] Patent publication number CN221728069U relates to a heavy-duty electric cylinder actuator with bidirectional overload clutch protection, including a drive component, a cylinder body component, and a buffer component. The drive component and the cylinder body component are connected, and the buffer component is slidably fitted inside the cylinder body component and connected to the drive component. The drive component provides a power source for the buffer component, and the buffer component slides inside the cylinder body component. Hydraulic buffering is achieved through the structural cooperation between the cylinder body component and the buffer component. This patent can, when the load suddenly increases, the system is overloaded, or the piston rod of the electric cylinder suddenly extends out of control, squeeze the oil cavity between the front and end covers of the electric cylinder. By utilizing the buffer structure between the cavities, the movement speed of the piston rod at the two ends is slowed down, thus playing a bidirectional protection role for the electric cylinder.

[0004] In the aforementioned patent, the buffer structure between the cavities slows down the movement speed of the piston rod at both ends, thus providing bidirectional protection for the electric cylinder. However, during operation, the electric cylinder is prone to being unable to withstand high mechanical loads, which can negatively impact the internal components of the electric cylinder. Therefore, a heavy-duty electric cylinder actuator with bidirectional overload clutch protection and better clutch protection effect is designed. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a heavy-duty electric cylinder actuator with bidirectional overload clutch protection, which solves the technical problem in the prior art that electric cylinders are prone to negative impacts on internal components due to their inability to withstand high mechanical loads during operation.

[0006] According to one aspect, at least one embodiment of the present invention provides a heavy-duty electric cylinder actuator with bidirectional overload clutch protection, comprising an electric cylinder body, wherein a protective device for clutch protection of the electric cylinder is provided on the surface of the electric cylinder body, the protective device comprising a motor, the motor being fixedly mounted on the surface of the electric cylinder body, a threaded shaft rotatably passing through the inner wall of the electric cylinder body, a pusher shaft being slidably mounted on the inner wall of the electric cylinder body, a transmission mechanism being provided on the circumferential surface of the output end of the motor, a clutch chuck one being fixedly mounted on one end of the threaded shaft near the transmission mechanism, an electric push rod being fixedly mounted on the inner wall of the transmission mechanism, and a clutch chuck two being fixedly mounted on the surface of the transmission mechanism; A sliding ring is fixedly installed on the surface of the pusher shaft, a limit frame is slidably installed on the surface of the pusher shaft, a telescopic spring rod is fixedly installed on the surface of the limit frame, a fixing rod is fixedly installed on the surface of the limit frame, and a contact force plate is slidably installed on the surface of the pusher shaft. When the output end of the electric push rod moves downward, it drives the clutch chuck two to move. At this time, the clutch chuck two moves downward and disengages from the clutch chuck one, thus disconnecting the power transmission to the threaded shaft and realizing clutch protection.

[0007] For example, in at least one embodiment of the present invention, a heavy-duty electric cylinder actuator with bidirectional overload clutch protection further includes: a sliding connection between the push shaft and the threaded shaft; a fixed connection between the free end of the telescopic spring rod and the push shaft; a pressure sensor provided at the end of the push shaft away from the electric push rod; a pressure sensing module and a signal transmission module provided inside the pressure sensor; and an electrical connection between the signal transmission module and the electric push rod. This avoids breakage or deformation caused by excessive torque or overcurrent, extends the life of key components of the equipment, and this operation can be performed in both forward and reverse directions.

[0008] For example, in at least one embodiment of the present invention, a heavy-duty electric cylinder actuator with bidirectional overload clutch protection further includes: a clutch chuck two fixedly connected to the output end of an electric push rod; a sliding ring and a threaded shaft connected by a thread; a groove is provided on the surface of the sliding ring; and a limiting frame fits into the groove, so that when the push shaft runs to the top of its stroke, the threaded connection between the sliding ring and the threaded shaft is cut off, thus avoiding wear caused by the threaded shaft running at the top of its stroke for a long time and affecting the normal operation of the equipment.

[0009] For example, in at least one embodiment of the present invention, a heavy-duty electric cylinder actuator with bidirectional overload clutch protection is provided, which further includes: a V-shaped groove is provided on the surface of the contact plate, and the V-shaped groove is slidably connected to the fixed rod. This avoids the situation where the push shaft will overshoot during high-intensity operation. Through the dual protection mechanism of overload clutch plus stroke lock, the equipment loss of control under high-intensity operation is effectively avoided.

[0010] According to another aspect, at least one embodiment of the present invention also provides a heavy-duty electric cylinder actuator with bidirectional overload clutch protection. A lubrication device for lubricating the threaded shaft is provided at the bottom of the pusher shaft. The lubrication device includes a fixed block, which is fixedly installed at the bottom of the pusher shaft. A contact wheel assembly is rotatably mounted on the surface of the fixed block. A fixed disc is fixedly mounted on the circumferential surface of the contact wheel assembly. A lubrication cylinder is fixedly mounted at the bottom of the fixed block. An extrusion disc is slidably mounted on the inner wall of the lubrication cylinder. A sliding plate is fixedly mounted on the surface of the extrusion disc. A linkage rod is rotatably mounted on the circumferential surface of the fixed disc. An eccentric wheel is fixedly mounted on the circumferential surface of the contact wheel assembly. A coating frame is slidably mounted on the inner wall of the pusher shaft. The extrusion disc moves downward to extrude grease inside the lubrication cylinder. Subsequently, the grease inside the lubrication cylinder is pumped onto the surface of the threaded shaft under the action of the extrusion disc, achieving a lubrication effect on the threaded shaft.

[0011] For example, in the heavy-duty electric cylinder actuator with bidirectional overload clutch protection provided in at least one embodiment of the present invention, the following are also included: the contact wheel group contacts the inner wall of the electric cylinder body, the surface of the extrusion disc is provided with a leakage hole, and the coating frame contacts the circumferential surface of the threaded shaft, which is suitable for working conditions such as low speed and heavy load where it is difficult to form an oil film, and suppresses direct metal contact wear.

[0012] For example, in the heavy-duty electric cylinder actuator with bidirectional overload clutch protection provided in at least one embodiment of the present invention, the following is further provided: the end of the linkage rod away from the fixed plate is rotatably connected to the sliding plate; the extrusion plate is slidably connected to the inner wall of the lubrication cylinder; the surface of the lubrication cylinder is provided with an application tube for applying grease to the circumferential surface of the threaded shaft; the application frame reciprocates to evenly apply the grease pumped out of the lubrication cylinder, thereby avoiding jamming caused by insufficient lubrication.

[0013] According to another aspect, at least one embodiment of the present invention also provides a heavy-duty electric cylinder actuator with bidirectional overload clutch protection. The inner wall of the electric cylinder body is provided with a heat dissipation device for dissipating heat from the clutch protection component and the internal transmission component. The heat dissipation device includes a heat dissipation frame, which is fixedly installed on the inner wall of the electric cylinder body. A fan shaft rotatably passes through the surface of the heat dissipation frame. A first gear is fixedly installed on the surface of the coating frame, and a second gear is fixedly installed on the surface of the coating frame. A first gear is fixedly installed on the circumferential surface of the fan shaft. A scraper is rotatably installed on the surface of the heat dissipation frame, and a second gear is fixedly installed on the surface of the scraper. The rotation of the fan shaft ventilates and dissipates heat from the inside of the electric cylinder body, quickly removing the heat generated by the operation of the motor and the lead screw.

[0014] For example, in the heavy-duty electric cylinder actuator with bidirectional overload clutch protection provided in at least one embodiment of the present invention, the scraper is in surface contact with the heat sink frame, and the scraper is rotatably connected to the fan shaft to avoid overheating causing the motor overload protection to be triggered or the insulation material to age.

[0015] For example, in the heavy-duty electric cylinder actuator with bidirectional overload clutch protection provided in at least one embodiment of the present invention, it further includes: a rack one meshing with a gear one, a rack two meshing with a gear two, the number of gears in gear one being greater than that in gear two, and a scraper rotating to scrape off dust from the surface of the heat sink frame, thereby preventing dust and impurities from clogging the interior of the electric cylinder body and affecting the ventilation and heat dissipation effect.

[0016] The beneficial effects of the embodiments of the present invention are as follows: In this invention, a pressure sensor transmits a signal to an electric push rod via a signal transmission module. At this time, the output end of the electric push rod moves downward, causing the clutch chuck two to move. The clutch chuck two then moves downward and disengages from the clutch chuck one, disconnecting the power transmission to the threaded shaft. This achieves clutch protection, preventing breakage or deformation caused by excessive torque or overcurrent, and extending the life of key components of the equipment. This operation can also be performed in both forward and reverse directions.

[0017] In this invention, the movement of the fixed rod drives the movement of the limiting frame. The limiting frame moves until it contacts and locks the slot on the surface of the sliding ring. At this point, when the pusher shaft reaches the top of its stroke, the threaded connection between the sliding ring and the threaded shaft is cut off, preventing the threaded shaft from running at the top for a long time and causing wear, which would affect the normal operation of the equipment. At the same time, it prevents the pusher shaft from overshooting during high-intensity operation. Through the dual protection mechanism of overload clutch and stroke lock, the equipment can be effectively prevented from going out of control under high-intensity operation.

[0018] In this invention, the sliding plate moves downward by rotating the linkage rod, which in turn moves the extrusion plate downward. The extrusion plate then extrudes the grease inside the lubrication cylinder. Subsequently, the grease inside the lubrication cylinder is pumped onto the surface of the threaded shaft under the action of the extrusion plate, achieving lubrication. This method is suitable for low-speed, heavy-load conditions where it is difficult to form an oil film, inhibiting direct metal-to-metal wear. The eccentric wheel rotates and contacts and extrudes the coating frame, which moves back and forth to evenly coat the grease pumped from the lubrication cylinder, preventing jamming due to insufficient lubrication. This ensures smooth and continuous material feeding action and improves material feeding accuracy.

[0019] In this invention, the movement of the rack drives the gear to rotate at a relatively fast speed. At this time, the fan shaft rotates to ventilate and dissipate heat inside the electric cylinder body, quickly removing the heat generated by the motor and lead screw, thus avoiding overheating that could trigger the motor overload protection or cause the insulation material to age.

[0020] In this invention, the rotation of gear two drives the scraper to rotate. At this time, the rotation of the scraper scrapes off the dust on the surface of the heat sink frame, avoiding the blockage of dust and impurities that would affect the ventilation and heat dissipation effect inside the electric cylinder body, ensuring long-term stable heat dissipation effect, and ensuring long-term high-intensity operation of the equipment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the main body in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of the main body in the embodiment; Figure 3 This is a schematic diagram showing the positional structure of clutch chuck one and clutch chuck two in another embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of the position structure of the fixed rod and the contact force plate in the embodiment; Figure 5 This is a schematic diagram of the positional structure of the sliding plate and the linkage rod in another embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram of the positional structure of the lubrication cylinder and the extrusion disc in the embodiment; Figure 7 This is a schematic diagram showing the positional structure of rack one and rack two in another embodiment of the present invention; Figure 8 for Figure 7 The schematic diagram of the position structure of the scraper and gear II in the embodiment is shown.

[0023] In the diagram: 1. Electric cylinder body; 21. Motor; 22. Threaded shaft; 23. Push shaft; 24. Transmission mechanism; 25. Clutch chuck one; 26. Electric push rod; 27. Clutch chuck two; 31. Sliding ring; 32. Limiting frame; 33. Telescopic spring rod; 34. Fixed rod; 35. Contact force plate; 41. Fixed block; 42. Contact wheel assembly; 43. Fixed plate; 44. Lubrication cylinder; 45. Extrusion plate; 46. Sliding plate; 47. Linkage rod; 48. Eccentric wheel; 49. Application frame; 51. Heat dissipation frame; 52. Fan shaft; 53. Gear rack one; 54. Gear rack two; 55. Gear one; 56. Scraper rod; 57. Gear two. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0025] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figures 1 to 8As shown, a heavy-duty electric cylinder actuator with bidirectional overload clutch protection is illustrated in one embodiment of the present invention. It includes an electric cylinder body 1, and a protection device for clutch protection of the electric cylinder is provided on the surface of the electric cylinder body 1. The protection device includes a motor 21, which is fixedly installed on the surface of the electric cylinder body 1. A threaded shaft 22 is rotatably passed through the inner wall of the electric cylinder body 1, and a pusher shaft 23 is slidably installed on the inner wall of the electric cylinder body 1. A transmission mechanism 24 is provided on the circumferential surface of the output end of the motor 21. A clutch chuck 25 is fixedly installed at one end of the threaded shaft 22 near the transmission mechanism 24. An electric push rod 26 is fixedly installed on the inner wall of the transmission mechanism 24, and a clutch chuck 27 is fixedly installed on the surface of the transmission mechanism 24. A sliding ring 31 is fixedly installed on the surface of the pusher shaft 23. A limit frame 32 is slidably installed on the surface of the pusher shaft 23. A telescopic spring rod 33 is fixedly installed on the surface of the limit frame 32. A fixing rod 34 is fixedly installed on the surface of the limit frame 32. A contact force plate 35 is slidably installed on the surface of the pusher shaft 23. The movement of the limit frame 32 drives the contact force plate 35 to move. When the contact force plate 35 moves under the action of the limit frame 32 until it contacts the inner wall of the electric cylinder body 1.

[0031] The pusher shaft 23 is slidably connected to the threaded shaft 22. The free end of the telescopic spring rod 33 is fixedly connected to the pusher shaft 23. A pressure sensor is provided at the end of the pusher shaft 23 away from the electric push rod 26. The pressure sensor is equipped with a pressure sensing module and a signal transmission module. The signal transmission module is electrically connected to the electric push rod 26. At this time, the pressure sensor transmits the signal to the electric push rod 26 through the signal transmission module.

[0032] The clutch chuck 27 is fixedly connected to the output end of the electric push rod 26. The sliding ring 31 is connected to the threaded shaft 22 by a thread. The surface of the sliding ring 31 is provided with a groove. The contact force plate 35 moves and presses the fixed rod 34 to move closer to the sliding ring 31. At this time, the movement of the fixed rod 34 drives the limit frame 32 to move, and the limit frame 32 fits into the groove.

[0033] The surface of the contact plate 35 is provided with a V-shaped groove, which is slidably connected to the fixed rod 34. The contact plate 35 moves in the opposite direction under the contact action of the inner wall of the electric cylinder body 1. At this time, the contact plate 35 moves and squeezes the fixed rod 34 to move closer to the sliding ring 31.

[0034] In some examples, when the electric cylinder body 1 needs to be activated, the electric push rod 26 is activated. The output end of the electric push rod 26 moves upward, causing the clutch chuck 27 to move. The clutch chuck 27 moves upward and contacts and engages with the electric push rod 26. At this time, the motor 21 is activated. The rotation of the motor 21 drives the transmission mechanism 24 to rotate. The rotation of the transmission mechanism 24 drives the clutch chuck 25 to rotate through the clutch chuck 27. At this time, the rotation of the clutch chuck 25 drives the threaded shaft 22 to rotate. Since the threaded shaft 22 is connected to the sliding ring 31 by a thread, the rotation of the threaded shaft 22 drives the sliding ring 31 to move. 31 moves, driving the pusher shaft 23 to move. The pusher shaft 23 pushes the material. When the pressure sensor inside the pusher shaft 23 senses that the material exerts a reaction force on the pusher shaft 23 greater than a preset value, because the signal transmission module is electrically connected to the electric push rod 26, the pressure sensor transmits a signal to the electric push rod 26 through the signal transmission module. At this time, the output end of the electric push rod 26 moves downward, driving the clutch chuck 27 to move. At this time, the clutch chuck 27 moves downward and disengages from the clutch chuck 25, disconnecting the power transmission to the threaded shaft 22. Clutch protection is now implemented to prevent breakage or deformation due to excessive torque or overcurrent, thus extending the lifespan of critical components. This operation can be performed in both forward and reverse directions. When the pusher shaft 23 moves under the action of the threaded shaft 22 until it reaches the top of its stroke, the pusher shaft 23 moves, causing the limit frame 32 to move. The limit frame 32 then moves, causing the contact plate 35 to move. When the contact plate 35 moves under the action of the limit frame 32 until it contacts the inner wall of the electric cylinder body 1, the contact plate 35 moves in the opposite direction under the contact action of the inner wall of the electric cylinder body 1. 5. The moving compression fixing rod 34 moves towards the sliding ring 31. At this time, the movement of the fixing rod 34 drives the limit frame 32 to move. The limit frame 32 moves until it contacts and locks the slot opened on the surface of the sliding ring 31. At this time, when the push shaft 23 runs to the top of its stroke, the threaded connection between the sliding ring 31 and the threaded shaft 22 is cut off. This avoids the threaded shaft 22 from running at the top for a long time and causing wear, which would affect the normal operation of the equipment. At the same time, it avoids the push shaft 23 from overshooting due to high-intensity operation. Through the dual protection mechanism of overload clutch and stroke lock, the equipment loss of control under high-intensity operation is effectively avoided.

[0035] refer to Figures 1 to 8In some embodiments, the heavy-duty electric cylinder actuator with bidirectional overload clutch protection also includes a lubrication device, which includes a lubrication device for lubricating the threaded shaft 22 at the bottom of the push shaft 23. The lubrication device includes a fixing block 41, which is fixedly installed at the bottom of the push shaft 23. A contact wheel assembly 42 is rotatably mounted on the surface of the fixing block 41. A fixing disk 43 is fixedly mounted on the circumferential surface of the contact wheel assembly 42. A lubrication cylinder 44 is fixedly mounted at the bottom of the fixing block 41. An extrusion disk 45 is slidably mounted on the inner wall of the lubrication cylinder 44. A sliding plate 46 is fixedly mounted on the surface of the extrusion disk 45. A linkage rod 47 is rotatably mounted on the circumferential surface of the fixing disk 43. An eccentric wheel 48 is fixedly mounted on the circumferential surface of the contact wheel assembly 42. A coating frame 49 is slidably mounted on the inner wall of the push shaft 23. The rotation of the contact wheel assembly 42 drives the eccentric wheel 48 to rotate. The eccentric wheel 48 rotates to contact and extrude the coating frame 49 to move.

[0036] The contact wheel assembly 42 contacts the inner wall of the electric cylinder body 1, the surface of the extrusion disc 45 is provided with a hole, the coating frame 49 contacts the circumferential surface of the threaded shaft 22, the fixed disc 43 rotates and drives the linkage rod 47 to rotate, the linkage rod 47 rotates and drives the sliding plate 46 to move downward, the sliding plate 46 moves downward and drives the extrusion disc 45 to move downward.

[0037] The end of the linkage rod 47 away from the fixed plate 43 is rotatably connected to the sliding plate 46. The extrusion plate 45 is slidably connected to the inner wall of the lubrication cylinder 44. The surface of the lubrication cylinder 44 is provided with an application tube for applying grease to the circumferential surface of the threaded shaft 22. The application frame 49 moves back and forth to evenly apply the grease pumped out of the lubrication cylinder 44.

[0038] In this embodiment, when the pusher shaft 23 moves under the action of the sliding ring 31, the movement of the pusher shaft 23 drives the fixed block 41 to move, and the movement of the fixed block 41 drives the contact wheel assembly 42 to move. Because the contact wheel assembly 42 is in contact with the inner wall of the electric cylinder body 1, the contact wheel assembly 42 rotates under the contact action of the inner wall of the electric cylinder body 1. At the same time, the rotation of the contact wheel assembly 42 drives the fixed disk 43 to rotate, the rotation of the fixed disk 43 drives the linkage rod 47 to rotate, the rotation of the linkage rod 47 drives the sliding plate 46 to move downward, and the downward movement of the sliding plate 46 drives the extrusion disk 45 to move downward. At this time, the downward movement of the extrusion disk 45... The grease inside the lubrication cylinder 44 is squeezed, and then pumped onto the surface of the threaded shaft 22 under the action of the extrusion disc 45, achieving a lubrication effect on the threaded shaft 22. This is suitable for low-speed, heavy-load and other working conditions where it is difficult to form an oil film, and inhibits direct metal-to-metal wear. At the same time, the rotation of the contact wheel group 42 drives the eccentric wheel 48 to rotate. The eccentric wheel 48 rotates and contacts and squeezes the coating frame 49 to move. The coating frame 49 moves back and forth to evenly coat the grease pumped out of the lubrication cylinder 44, avoiding jamming caused by insufficient lubrication, ensuring smooth and continuous material pushing action, and improving the accuracy of material pushing.

[0039] refer to Figures 1 to 8 In some embodiments, the heavy-duty electric cylinder actuator with bidirectional overload clutch protection also includes a heat dissipation device. The heat dissipation device includes a heat dissipation frame 51, which is fixedly installed on the inner wall of the electric cylinder body 1. A fan shaft 52 rotatably passes through the surface of the heat dissipation frame 51. A first rack 53 is fixedly installed on the surface of the application frame 49. A second rack 54 is fixedly installed on the surface of the application frame 49. A first gear 55 is fixedly installed on the circumferential surface of the fan shaft 52. A scraper 56 is rotatably installed on the surface of the heat dissipation frame 51. A second gear 57 is fixedly installed on the surface of the scraper 56. The second rack 54 and the second gear 57 mesh with each other. The movement of the second rack 54 drives the second gear 57 to rotate, and the rotation of the second gear 57 drives the scraper 56 to rotate.

[0040] The scraper 56 contacts the surface of the heat sink frame 51 and is rotatably connected to the fan shaft 52. The rotation of the scraper 56 scrapes off the dust on the surface of the heat sink frame 51, preventing dust and impurities from clogging and affecting the ventilation and heat dissipation effect inside the electric cylinder body 1.

[0041] The rack 53 meshes with the gear 55. The movement of the rack 53 drives the gear 55 to rotate at a relatively fast speed. At this time, the fan shaft 52 rotates to ventilate and dissipate heat inside the electric cylinder body 1. The rack 54 meshes with the gear 57. The number of gears in the gear 55 is greater than that in the gear 57.

[0042] In this embodiment, when the coating frame 49 reciprocates under the action of the eccentric wheel 48, the movement of the coating frame 49 drives the first rack 53 to move. Because the first rack 53 meshes with the first gear 55, the movement of the first rack 53 drives the first gear 55 to rotate at a relatively fast speed. At this time, the fan shaft 52 rotates to ventilate and dissipate heat inside the electric cylinder body 1, quickly removing the heat generated by the operation of the motor 21 and the lead screw, avoiding overheating that could trigger the overload protection of the motor 21 or cause the insulation material to age. At the same time, the second rack 54 moves under the action of the coating frame 49. Because the second rack 54 meshes with the second gear 57, the movement of the second rack 54 drives the second gear 57 to rotate. At the same time, the rotation of the second gear 57 drives the scraper 56 to rotate. At this time, the rotation of the scraper 56 scrapes off the dust on the surface of the heat dissipation frame 51, preventing dust and impurities from clogging and affecting the ventilation and heat dissipation effect inside the electric cylinder body 1, ensuring long-term stable heat dissipation effect, and ensuring long-term high-intensity operation of the equipment.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A heavy-duty electric cylinder actuator with bidirectional overload clutch protection, characterized in that, The device includes an electric cylinder body (1), the surface of which is provided with a protective device for clutch protection of the electric cylinder. The protective device includes a motor (21), the motor (21) is fixedly installed on the surface of the electric cylinder body (1), a threaded shaft (22) is rotatably passed through the inner wall of the electric cylinder body (1), a pusher shaft (23) is slidably installed on the inner wall of the electric cylinder body (1), a transmission mechanism (24) is provided on the circumferential surface of the output end of the motor (21), a clutch chuck one (25) is fixedly installed at one end of the threaded shaft (22) near the transmission mechanism (24), an electric push rod (26) is fixedly installed on the inner wall of the transmission mechanism (24), and a clutch chuck two (27) is fixedly installed on the surface of the transmission mechanism (24). A sliding ring (31) is fixedly installed on the surface of the pusher shaft (23), a limit frame (32) is slidably installed on the surface of the pusher shaft (23), a telescopic spring rod (33) is fixedly installed on the surface of the limit frame (32), a fixing rod (34) is fixedly installed on the surface of the limit frame (32), and a contact force plate (35) is slidably installed on the surface of the pusher shaft (23).

2. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 1, characterized in that: The pusher shaft (23) is slidably connected to the threaded shaft (22), and the free end of the telescopic spring rod (33) is fixedly connected to the pusher shaft (23). A pressure sensor is provided at the end of the pusher shaft (23) away from the electric push rod (26). The pressure sensor is equipped with a pressure sensing module and a signal transmission module. The signal transmission module is electrically connected to the electric push rod (26).

3. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 2, characterized in that: The clutch chuck (27) is fixedly connected to the output end of the electric push rod (26), the sliding ring (31) is connected to the threaded shaft (22) by a thread, the surface of the sliding ring (31) is provided with a slot, and the limiting frame (32) fits into the slot.

4. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 3, characterized in that: The surface of the contact plate (35) is provided with a V-shaped groove, and the V-shaped groove is slidably connected to the fixed rod (34).

5. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 4, characterized in that: The bottom of the pusher shaft (23) is provided with a lubrication device for lubricating the threaded shaft (22). The lubrication device includes a fixed block (41), which is fixedly installed at the bottom of the pusher shaft (23). A contact wheel assembly (42) is rotatably installed on the surface of the fixed block (41). A fixed disk (43) is fixedly installed on the circumferential surface of the contact wheel assembly (42). A lubrication cylinder (44) is fixedly installed at the bottom of the fixed block (41). An extrusion disk (45) is slidably installed on the inner wall of the lubrication cylinder (44). A sliding plate (46) is fixedly installed on the surface of the extrusion disk (45). A linkage rod (47) is rotatably installed on the circumferential surface of the fixed disk (43). An eccentric wheel (48) is fixedly installed on the circumferential surface of the contact wheel assembly (42). A coating frame (49) is slidably installed on the inner wall of the pusher shaft (23).

6. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 5, characterized in that: The contact wheel assembly (42) is in contact with the inner wall of the electric cylinder body (1), the surface of the extrusion disc (45) is provided with a leakage hole, and the coating frame (49) is in contact with the circumferential surface of the threaded shaft (22).

7. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 6, characterized in that: The end of the linkage rod (47) away from the fixed plate (43) is rotatably connected to the sliding plate (46), the extrusion plate (45) is slidably connected to the inner wall of the lubrication cylinder (44), and the surface of the lubrication cylinder (44) is provided with an application tube for applying grease to the circumferential surface of the threaded shaft (22).

8. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 7, characterized in that: The inner wall of the electric cylinder body (1) is provided with a heat dissipation device for dissipating heat from the clutch protection component and the internal transmission component. The heat dissipation device includes a heat dissipation frame (51), which is fixedly installed on the inner wall of the electric cylinder body (1). A fan shaft (52) is rotatably passed through the surface of the heat dissipation frame (51). A gear rod (53) is fixedly installed on the surface of the coating frame (49). A gear rod (54) is fixedly installed on the surface of the coating frame (49). A gear (55) is fixedly installed on the circumferential surface of the fan shaft (52). A scraper (56) is rotatably installed on the surface of the heat dissipation frame (51). A gear (57) is fixedly installed on the surface of the scraper (56).

9. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 8, characterized in that: The scraper (56) contacts the surface of the heat sink frame (51), and the scraper (56) is rotatably connected to the fan shaft (52).

10. The heavy-duty electric cylinder actuator with bidirectional overload clutch protection according to claim 9, characterized in that: The first rack (53) meshes with the first gear (55), the second rack (54) meshes with the second gear (57), and the first gear (55) has a greater number of gears than the second gear (57).

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