Electric push rod

Abstract

The utility model relates to the technical field of electric push rods, in particular to an electric push rod, which comprises a base, a reduction gearbox fixedly mounted at the top of the base and a piston cylinder fixedly mounted at the top of the reduction gearbox, a circular cylinder is arranged on one side of the reduction gearbox, and flow guide hoppers are fixedly mounted on two sides of the circular cylinder. A fixed rod is rotationally mounted on one side of one of the two groups of flow guide hoppers far away from the reduction gearbox, and a flow guide part is further arranged on the surface of the fixed rod; the driving part is arranged in the reduction gearbox, the driving part is used for driving the push rod body to ascend and descend, meanwhile, air in the piston cylinder of the push rod body can be guided, when the push rod body ascends, air above the threaded sleeve of the push rod body can be pumped out and guided to the position below the threaded sleeve, and on the contrary, when the push rod body descends, air below the push rod body can be guided to the position above the threaded sleeve. The resistance caused by air pressure in the lifting process of the push rod body can be reduced, corresponding assistance is provided for the push rod body, and the lifting efficiency of the push rod body can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of electric linear actuator technology, and specifically to an electric linear actuator. Background Technology

[0002] An electric linear actuator is a mechanical device driven by an electric motor. It is mainly used to apply linear motion to various equipment and systems, providing precise positioning and control. It has high reliability and durability and is suitable for occasions that require smooth and stable motion. It is widely used in fields such as automation equipment, door and window control, medical equipment, industrial machinery and home automation.

[0003] Traditional electric linear actuators typically use motors and gears to convert rotary motion into linear motion, allowing the actuator to move linearly within a piston cylinder. However, during this movement, the piston cylinder contains gas. As a result, the gas pressure creates resistance on the actuator, which in turn affects its moving efficiency.

[0004] In view of this, we propose an electric actuator. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an electric push rod that can effectively solve the problem that the presence of gas in the piston cylinder in the existing technology causes resistance to the movement of the push rod due to the gas pressure, thus affecting the efficiency of the push rod movement.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an electric push rod, including a base, a reduction gearbox fixedly installed on the top of the base, and a piston cylinder fixedly installed on the top of the reduction gearbox;

[0008] A cylindrical tube is provided on one side of the gearbox. The bottom of the cylindrical tube is fixedly installed on the top of the base. Guide buckets are fixedly installed on both sides of the cylindrical tube. A fixed rod is rotatably installed on one side of the guide buckets away from the gearbox. The other end of the fixed rod rotates through the other set of guide buckets and extends into the interior of the gearbox. The surface of the fixed rod is also provided with guide components.

[0009] The gearbox contains a drive unit, and the piston cylinder contains a lifting unit. The drive unit can move the lifting unit up and down, and can also drive the guide unit to guide the gas in the piston cylinder.

[0010] Furthermore, the driving component includes a worm gear rotatably mounted at the bottom of the inner cavity of the gearbox, a worm gear meshing with the surface of the worm gear, one end of the worm gear being fixedly mounted to one end of the fixed rod extending into the inside of the gearbox, and the other end of the worm gear rotating through the gearbox.

[0011] A motor is also fixedly installed on one side of the gearbox. The motor is fixedly installed on the end of the gearbox through which the worm passes via the output shaft.

[0012] Furthermore, the guide includes a fixed disk that is fixedly mounted on the surface of the fixed rod, and multiple sets of blades are fixedly mounted on the surface of the fixed disk.

[0013] Furthermore, the lifting component includes a guide plate fixedly installed on the inner wall of the piston cylinder, a lead screw rotatably installed at the bottom of the guide plate, the bottom of the lead screw rotatably passes through the piston cylinder and extends into the interior of the gearbox, and the bottom of the lead screw is fixedly installed on the top of the worm gear.

[0014] Furthermore, the lead screw has a threaded sleeve on its surface, and a push rod body is fixedly installed on the top of the threaded sleeve. The surface of the threaded sleeve is movably sleeved on the inner wall of the piston cylinder.

[0015] Furthermore, the surface of the push rod body also has two sets of sliding grooves, and the inner cavity sidewalls of the two sets of sliding grooves are slidably connected to the surface of the guide plate.

[0016] Furthermore, connecting pipes are fixedly installed on the sides of the two sets of guide buckets that are far apart from each other, and the ends of the two sets of connecting pipes that are far away from the guide buckets are fixedly installed on the surface of the piston cylinder.

[0017] The technical solution provided by this utility model has the following advantages compared with the known public technology:

[0018] This invention incorporates a drive component within the gearbox. While the drive component moves the push rod body up and down, it also guides the gas within the piston cylinder. When the push rod body rises, the gas above the threaded sleeve is extracted and directed to the area below the threaded sleeve. Conversely, when it descends, the gas below the threaded sleeve is directed to the area above the threaded sleeve. This not only reduces the resistance caused by air pressure during the lifting and lowering of the push rod body but also provides corresponding assistance, thereby further improving the lifting efficiency of the push rod body. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-view structural diagram of the present invention;

[0021] Figure 2 This is a partial cross-sectional structural diagram of the gearbox and cylindrical cylinder of this utility model;

[0022] Figure 3 This is a partial cross-sectional structural diagram of the piston cylinder of this utility model;

[0023] Figure 4 This is a partial structural diagram of the guide plate, slide, and related components of this utility model.

[0024] The labels in the diagram represent: 1. Base; 2. Gearbox; 3. Motor; 4. Piston cylinder; 5. Push rod body; 6. Circular cylinder; 7. Guide bucket; 8. Connecting pipe fitting; 9. Lead screw; 10. Worm gear; 11. Fixed rod; 12. Fixed disc; 13. Blade; 14. Worm wheel; 15. Threaded sleeve; 16. Guide disc; 17. Slide groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] An electric actuator includes a base 1 and a reduction gearbox 2 fixedly installed on the top of the base 1, and a piston cylinder 4 fixedly installed on the top of the reduction gearbox 2. A circular cylinder 6 is provided on one side of the reduction gearbox 2. The bottom of the circular cylinder 6 is fixedly installed on the top of the base 1, and guide buckets 7 are fixedly installed on both sides of the circular cylinder 6. A fixed rod 11 is rotatably installed on the side of the guide bucket 7 away from the reduction gearbox 2. The other end of the fixed rod 11 rotates through the other set of guide buckets 7 and extends into the interior of the reduction gearbox 2. A guide component is also provided on the surface of the fixed rod 11. A driving component is provided inside the reduction gearbox 2, and a lifting component is provided inside the piston cylinder 4. The driving component can drive the lifting component to move up and down, and at the same time, it can also drive the guide component to guide the gas in the piston cylinder 4.

[0028] Specifically, the drive unit inside the gearbox 2 can drive the lifting component inside the piston cylinder 4 to move up and down, and at the same time drive the fixed rod 11 to rotate. The rotation of the fixed rod 11 can drive the guide component on the surface to rotate, thereby guiding the gas in the piston cylinder 4. The guide buckets 7 fixedly installed on both sides of the cylindrical cylinder 6 guide and guide the gas, thereby reducing the resistance of the lifting component during the lifting process and improving its lifting efficiency.

[0029] Specifically, the driving component includes a worm gear 14 rotatably mounted at the bottom of the inner cavity of the gearbox 2, a worm 10 meshing with the surface of the worm gear 14, one end of the worm 10 being fixedly mounted to one end of the fixed rod 11 extending into the inside of the gearbox 2, and the other end of the worm 10 rotating through the gearbox 2. A motor 3 is also fixedly mounted on one side of the gearbox 2, and the motor 3 is fixedly mounted to one end of the worm 10 passing through the gearbox 2 via an output shaft. The flow guide includes a fixed disk 12 fixedly mounted on the surface of the fixed rod 11, and multiple sets of blades 13 are fixedly mounted on the surface of the fixed disk 12.

[0030] Specifically, the output is provided by the motor 3 fixedly installed on one side of the gearbox 2, which can drive the worm gear 10 to rotate, thereby driving the fixed rod 11 extending into the gearbox 2 to rotate. At this time, the fixed plate 12 fixedly installed on the surface of the fixed rod 11 can rotate, and the gas can be sucked in by the rotation of the multiple sets of blades 13 fixedly installed on the surface of the fixed plate 12. When the worm gear 10 rotates, it can drive the worm wheel 14 that is meshed with it to rotate.

[0031] Furthermore, the lifting component includes a guide plate 16 fixedly installed on the inner wall of the piston cylinder 4. A lead screw 9 is rotatably installed at the bottom of the guide plate 16. The bottom of the lead screw 9 rotates through the piston cylinder 4 and extends into the interior of the gearbox 2. The bottom of the lead screw 9 is fixedly installed on the top of the worm gear 14. A threaded sleeve 15 is threadedly connected to the surface of the lead screw 9. A push rod body 5 is fixedly installed on the top of the threaded sleeve 15. The surface of the threaded sleeve 15 is movably sleeved on the inner wall of the piston cylinder 4. The surface of the push rod body 5 also has two sets of sliding grooves 17. The inner walls of the two sets of sliding grooves 17 are slidably connected to the surface of the guide plate 16. Connecting pipes 8 are fixedly installed on the side of the two sets of guide buckets 7 that are far away from each other. The ends of the two sets of connecting pipes 8 that are far away from the guide buckets 7 are fixedly installed on the surface of the piston cylinder 4.

[0032] Specifically, when the worm gear 14 rotates, it can drive the lead screw 9, which is rotatably mounted on the guide plate 16, to rotate. Since the push rod body 5 is slidably mounted on the surface of the guide plate 16 using its two sets of sliding grooves 17, it can play a corresponding limiting and guiding role. Therefore, while the lead screw 9 rotates, the push rod body 5 can be driven to move up and down using the threaded sleeve 15. The threaded sleeve 15 is provided with a sealing bladder, which can ensure that the piston cylinder 4 and the threaded sleeve 15 form a relative seal during the movement of the push rod body 5, thereby preventing external contaminants from entering its interior and affecting the normal operation of its internal components. At the same time, it can also reduce the friction between the threaded sleeve 15 and the piston cylinder 4.

[0033] Furthermore, when the push rod body 5 moves upward, the positive output rotation of the motor 3 drives the blade 13 to rotate in the positive direction via the fixed rod 11. This allows the gas in the piston cylinder 4 above the threaded sleeve 15 to be drawn into the position below the threaded sleeve 15 via the guide bucket 7 and connecting pipe 8. This reduces the air pressure above the threaded sleeve 15 to be lower than the air pressure below, thus reducing the resistance during the upward movement and providing corresponding assistance. Conversely, when the push rod body 5 descends, the gas below the threaded sleeve 15 can be drawn into the position above the threaded sleeve 15.

[0034] The working principle of this utility model is as follows: The motor 3 outputs power to drive the worm gear 10 to rotate, which in turn drives the meshing worm wheel 14 to rotate. When the worm wheel 14 rotates, it drives the lead screw 9, which is rotatably mounted on the guide plate 16, to rotate. Since the push rod body 5 is slidably mounted on the surface of the guide plate 16 using its two sets of sliding grooves 17, it provides corresponding limiting and guiding functions. Therefore, while the lead screw 9 rotates, the threaded sleeve 15 drives the push rod body 5 to move up and down. Furthermore, when the worm gear 10 rotates, it drives the fixed rod 11, which extends into the reduction gearbox 2, to rotate. This, in turn, drives the fixed plate 12, which is fixedly mounted on the surface of the fixed rod 11, to rotate. The rotation of the multiple sets of blades 13 can draw in gas. When the push rod body 5 moves upward, the fixed rod 11 drives the blades 13 to rotate in the forward direction. Using the guide bucket 7 and connecting pipe 8, the gas above the threaded sleeve 15 in the piston cylinder 4 can be drawn into the position below the threaded sleeve 15, so that the air pressure above the threaded sleeve 15 is lower than the air pressure below, reducing the resistance during its ascent and providing corresponding assistance. Conversely, when the push rod body 5 descends, the gas below the threaded sleeve 15 can be drawn into the position above the threaded sleeve 15. This not only reduces the resistance caused by air pressure during the ascent and descent of the push rod body 5, but also provides corresponding assistance, further improving the ascent and descent efficiency of the push rod body 5.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electric linear actuator, characterized in that, include: The base (1) and the gearbox (2) fixedly installed on the top of the base (1), and the piston cylinder (4) fixedly installed on the top of the gearbox (2); A cylindrical tube (6) is provided on one side of the gearbox (2). The bottom of the cylindrical tube (6) is fixedly installed on the top of the base (1). Both sides of the cylindrical tube (6) are fixedly installed with guide buckets (7). A fixed rod (11) is rotatably installed on one side of the guide bucket (7) that is away from the gearbox (2). The other end of the fixed rod (11) rotates through the other guide bucket (7) and extends into the interior of the gearbox (2). The surface of the fixed rod (11) is also provided with a guide component. The gearbox (2) is equipped with a drive unit, and the piston cylinder (4) is equipped with a lifting unit. The drive unit can drive the lifting unit to move up and down, and at the same time, it can drive the guide unit to guide the gas in the piston cylinder (4).

2. The electric linear actuator according to claim 1, characterized in that, The drive unit includes a worm wheel (14) rotatably mounted on the bottom of the inner cavity of the gearbox (2), and a worm (10) meshing with the surface of the worm wheel (14). One end of the worm (10) is fixedly mounted on one end of the fixed rod (11) extending into the inside of the gearbox (2), and the other end of the worm (10) rotates through the gearbox (2). A motor (3) is also fixedly installed on one side of the gearbox (2). The motor (3) is fixedly installed on the end of the worm gear (10) that passes through the gearbox (2) via the output shaft.

3. An electric linear actuator according to claim 2, characterized in that, The guide includes a fixed disk (12) fixedly mounted on the surface of the fixed rod (11), and multiple sets of blades (13) are fixedly mounted on the surface of the fixed disk (12).

4. An electric linear actuator according to claim 3, characterized in that, The lifting component includes a guide plate (16) fixedly installed on the inner wall of the piston cylinder (4). A lead screw (9) is rotatably installed on the bottom of the guide plate (16). The bottom of the lead screw (9) rotates through the piston cylinder (4) and extends into the interior of the gearbox (2). The bottom of the lead screw (9) is fixedly installed on the top of the worm gear (14).

5. An electric linear actuator according to claim 4, characterized in that, The screw (9) has a threaded sleeve (15) on its surface. The push rod body (5) is fixedly installed on the top of the threaded sleeve (15), and the surface of the threaded sleeve (15) is movably sleeved on the inner wall of the piston cylinder (4).

6. An electric linear actuator according to claim 5, characterized in that, The surface of the push rod body (5) also has two sets of sliding grooves (17), and the inner cavity sidewalls of the two sets of sliding grooves (17) are slidably connected to the surface of the guide plate (16).

7. An electric linear actuator according to claim 6, characterized in that, Two sets of guide buckets (7) are fixedly installed with connecting pipes (8) on the side away from each other, and the ends of the two sets of connecting pipes (8) away from the guide buckets (7) are fixedly installed on the surface of the piston cylinder (4).

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