Electric door actuator special for low-temperature grain storage

Abstract

The utility model relates to an electrically operated gate actuator special for low-temperature grain storage, which belongs to the technical field of electrically operated gate driving mechanisms and comprises a speed reducing motor, a transmission shaft, a limiting piece and a limiting switch, the speed reducing motor and the transmission shaft are in transmission connection, and the limiting piece is connected to the side wall of the transmission shaft. After the transmission shaft rotates by a preset angle, the limiting piece triggers the limiting switch to enable the gear motor to be powered off. The technical problems that in the prior art, a driving mechanism lacks a protection mechanism, and a gear in a speed reducer is prone to being damaged or a motor is prone to being burnt out when misoperation occurs can be solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric door drive mechanism, and specifically relates to an electric door actuator for low-temperature grain storage. Background Technology

[0002] Electric doors use a 24V motor driven by a speed reducer to open and close the door. Traditional drive mechanisms are prone to not sealing the door tightly enough.

[0003] The existing patent with publication number CN204961714U discloses a worm gear reducer, including a housing, an input shaft inside the housing, a worm connected to the input shaft, a worm wheel connected to the worm, and an output shaft connected to the worm wheel. The outer ends of the worm wheel and the worm are provided with seals. The input shaft is connected to a first helical gear, the first helical gear is connected to a second helical gear, and the second helical gear is connected to a motor through a transmission shaft.

[0004] The existing technology has the following problems:

[0005] While worm gear transmission increases the torque of the drive mechanism, the lack of a protection mechanism in the drive mechanism makes it easy to damage the gears inside the reducer or burn out the motor in case of misoperation. Utility Model Content

[0006] This utility model provides an electric door actuator for low-temperature grain storage, which can solve the technical problem that the drive mechanism lacks a protection mechanism in the prior art, and that misoperation can easily damage the gears in the reducer or burn out the motor.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] This application provides an electric door actuator for low-temperature grain storage, including a geared motor and a drive shaft connected by a transmission, and also includes a limit member and a limit switch. The limit member is connected to the side wall of the drive shaft; the limit switch is electrically connected to the geared motor.

[0009] After the aforementioned drive shaft rotates to a preset angle, the limiting component triggers the limiting switch to de-energize the geared motor.

[0010] The above technical solution uses limit components and limit switches to control the rotation angle of the drive shaft. When the drive shaft rotates to a preset angle, the power supply of the geared motor is directly disconnected, thereby avoiding damage to the gears inside the gearbox or burnout of the motor due to misoperation.

[0011] In this utility model, the above-mentioned electric door actuator for low-temperature grain storage also includes a worm gear, which is connected between the geared motor and the transmission shaft.

[0012] The above technical solution, which uses worm gear transmission, improves the transmission torque, enhances transmission stability, and solves problems such as the door not closing tightly and the rubber strip not being pressed firmly.

[0013] In this utility model, the above-mentioned electric door actuator for low-temperature grain storage also includes a limit adjuster, which is detachably connected between the limit member and the drive shaft.

[0014] The above technical solution, using a limit adjuster, allows for easy adjustment of the preset rotation angle of the drive shaft, adapting to different door sizes and improving applicability.

[0015] In this utility model, the above-mentioned electric door actuator for low-temperature grain storage also includes a pre-embedded inner door box, which is connected to the outside of the geared motor and the transmission shaft. The pre-embedded inner door box has a through hole, which is coaxially arranged with the transmission shaft.

[0016] By employing the above technical solution, a pre-embedded inner box is used to protect the internal transmission structure of the actuator, thereby improving the stability and safety of the actuator's operation. Attached Figure Description

[0017] 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.

[0018] Figure 1 An isometric view of the electric door actuator for low-temperature grain storage provided in this embodiment of the utility model;

[0019] Figure 2 A front view of the electric door actuator for low-temperature grain storage provided in an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Sectional view at point AA;

[0021] Figure 4 This is a schematic diagram showing the installation of the electric gate actuator and the gate for low-temperature grain storage, as provided in an embodiment of this utility model.

[0022] Icons: 1- Gear motor; 2- Motor base; 3- Worm gear; 4- Drive shaft; 5- Limit adjuster; 6- Limit switch; 7- Embedded box inside the door; 8- Door. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not 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 this application.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; 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 application based on the specific circumstances.

[0027] Example:

[0028] Please refer to Figures 1 to 4 , Figures 1 to 4 The image shown is an embodiment of this application.

[0029] This embodiment provides a special electric door actuator for low-temperature grain storage, such as... Figures 1 to 3 As shown, the device includes a geared motor 1 and a drive shaft 4 connected by a transmission, and also includes a limiting member and a limit switch 6. For example, the limiting member adopts... Figure 3 The two hexagonal nuts shown are connected to the side wall of the drive shaft 4 by a limiting member; as... Figure 2 and Figure 3 As shown, the limit switch 6 is electrically connected to the geared motor 1. Both the limit switch 6 and the geared motor 1 are connected to the motor base 2, and the relative position of their transmission is fixed by the motor base 2.

[0030] After the aforementioned drive shaft 4 rotates to a preset angle, the limiting component triggers the limiting switch 6 to de-energize the reduction motor 1.

[0031] When using, such as Figure 2 and Figure 3 As shown, there are two limiters and two limit switches 6. For example, when the inner limiter triggers the inner limit switch 6, the geared motor 1 is de-energized and cannot drive the transmission shaft 4 to rotate counterclockwise. At this time, the remote control cannot continue to control the geared motor 1 to drive the transmission shaft 4 to rotate counterclockwise further, thus avoiding damage to the gears inside the gear reducer or burnout of the motor. However, the remote control can control the geared motor 1 to drive the transmission shaft 4 to rotate clockwise.

[0032] It should be noted that the remote control is an external device that needs to be configured independently. Those skilled in the art can select a suitable remote control through existing technology and public channels, and connect it to the external power supply and the geared motor 1 according to its instruction manual. Therefore, no specific limitation or further explanation is given here. Those skilled in the art can connect the specific control circuit according to textbooks or technical manuals and other public technical solutions. The connection method of the control circuit is not within the protection scope of this application. Any circuit that can realize the control method between the limit switch 6 and the geared motor 1 can be used.

[0033] The above technical solution uses limit components and limit switches 6 to control the rotation angle of the transmission shaft 4. When the transmission shaft 4 rotates to a preset angle, the power supply of the geared motor 1 is directly disconnected, thereby avoiding damage to the gears inside the gearbox or burnout of the motor due to misoperation.

[0034] As a preferred embodiment, the above-mentioned electric door actuator for low-temperature grain storage also includes a worm gear 3, which is connected between the geared motor 1 and the transmission shaft 4.

[0035] The above technical solution, which uses a worm gear 3 transmission, improves the transmission torque, enhances transmission stability, and solves problems such as the door not closing tightly and the rubber strip not being pressed firmly.

[0036] As a preferred implementation method, such as Figure 2 and Figure 3 As shown, the above-mentioned electric door actuator for low-temperature grain storage also includes a limit adjuster 5, which is detachably connected between the limit member and the drive shaft 4.

[0037] In use, the locking screw on the side of the limit adjuster 5 (exemplary example as shown) is used. Figure 2 The inner limit adjuster 5 shown has a threaded hole on its side. Adjusting the relative angle between the limit member and the drive shaft 4, as well as the included angle between the two limit members, allows for adjustment of different door 8 closing strokes.

[0038] By using the above technical solution and the limit adjuster 5, the preset rotation angle of the drive shaft 4 can be easily adjusted, which can adapt to different door size designs and improve applicability.

[0039] As a preferred implementation method, such as Figure 1 and Figure 4 As shown, the above-mentioned electric door actuator for low-temperature grain storage also includes a pre-embedded inner door box 7, which is connected to the outside of the reduction motor 1 and the transmission shaft 4. The pre-embedded inner door box 7 has a through hole, which is coaxially arranged with the transmission shaft 4.

[0040] In use, the geared motor 1, worm gear 3, drive shaft 4, and limit switch 6 are all connected to the motor base 2. The motor base 2 and the pre-embedded inner box 7 are connected by screws. The pre-embedded inner box 7 is then welded or riveted to the inside of the large inner box 8.

[0041] The above technical solution uses a pre-embedded inner box 7 to protect the internal transmission structure of the actuator, thereby improving the stability and safety of the actuator's operation.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A special electric door actuator for low-temperature grain storage, comprising a geared motor (1) and a drive shaft (4) connected by a transmission, characterized in that, Also includes: A limiting member is connected to the side wall of the drive shaft (4); Limit switch (6) is electrically connected to the geared motor (1); After the drive shaft (4) rotates to a preset angle, the limiting component triggers the limiting switch (6) to de-energize the geared motor (1).

2. The electric door actuator for low-temperature grain storage according to claim 1, characterized in that, Also includes: The worm gear (3) is connected between the geared motor (1) and the transmission shaft (4).

3. The electric door actuator for low-temperature grain storage according to claim 2, characterized in that, Also includes: The limit adjuster (5) is detachably connected between the limit member and the drive shaft (4).

4. The electric door actuator for low-temperature grain storage according to claim 3, characterized in that, Also includes: An embedded inner box (7) is connected to the outside of the geared motor (1) and the transmission shaft (4). The embedded inner box (7) has a through hole, which is coaxially arranged with the transmission shaft (4).

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