Locking actuator

Abstract

The utility model discloses a locking actuator which comprises a box body, a turbine shaft is vertically installed in the box body through two first bearing pieces, the lower end of the turbine shaft extends out of the box body and is provided with a spring bolt through a fixing piece, a worm gear is arranged on the turbine shaft, the number of the first bearing pieces is two, and the two first bearing pieces are located on the upper side and the lower side of the worm gear respectively. A worm is horizontally installed in the box body through second bearing pieces, the middle of the worm is meshed with the worm gear, the number of the second bearing pieces is two, the two second bearing pieces are located on the two sides of the meshing portion of the worm respectively, and a driving motor for driving the worm to rotate is arranged in the box body. The worm gear and worm locking device has the advantages that the vertical state of the worm gear shaft is guaranteed through the two first bearing pieces, the horizontal state of the worm is guaranteed through the two second bearing pieces, the self-locking characteristic of the worm gear and the worm is utilized, the unlocking phenomenon occurring when the load is large is effectively avoided, and the stability after locking is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a locking actuator. Background Art

[0002] The locking actuator is mainly responsible for the reliable locking and unlocking of the equipment and the platform. The existing locking actuator is prone to unlocking when the impact load is large, has poor stability, and is prone to damage to the equipment. Utility Model Content

[0003] The utility model aims to provide a locking actuator to solve the problems that the existing locking actuator is prone to unlocking when the impact load is large, has poor stability, and is prone to causing equipment damage.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The locking actuator comprises a housing, in which a turbine shaft is vertically mounted via a first bearing member, the lower end of the turbine shaft protrudes out of the housing and a locking tongue is mounted via a fixing member, a worm gear is arranged on the turbine shaft, the first bearing member comprises two, and the two first bearing members are respectively located at the upper and lower sides of the worm gear, a worm is horizontally mounted via a second bearing member in the housing, the middle part of the worm gear is meshed with the worm gear, the second bearing member comprises two, and the two second bearing members are respectively located at the two sides of the meshing part of the worm gear, and a driving motor for driving the worm gear to rotate is arranged in the housing.

[0006] Furthermore, a limit baffle is provided at the upper end of the turbine shaft, a proximity switch adapted to the limit baffle is provided in the box body, and the proximity switch is connected to the drive motor.

[0007] Furthermore, the driving shaft at the other end of the driving motor away from the worm is connected to a manual driving block, and a protective cover adapted to the manual driving block is detachably mounted on the box body.

[0008] Furthermore, a sealing cover plate is provided at the upper end of the box body, and a lifting handle is hingedly installed on the sealing cover plate.

[0009] The utility model has the following advantages: the vertical state of the turbine shaft is ensured by the two first bearing members, the horizontal state of the worm is ensured by the two second bearing members, and the self-locking characteristics of the worm gear are utilized to effectively avoid the unlocking phenomenon when the load is large, thereby improving the stability after locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a vertical sectional structural schematic diagram of the utility model.

[0011] Figure 2It is a horizontal cross-sectional structural schematic diagram of the utility model.

[0012] In the figure, 1-housing, 2-first bearing member, 3-turbine shaft, 4-lock tongue, 5-worm gear, 6-second bearing member, 7-worm, 8-drive motor, 9-limit baffle, 10-proximity switch, 11-manual drive block, 12-protective cover, 13-sealing cover plate, 14-lifting handle. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0017] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] refer to Figure 1 , 2, an embodiment of the utility model is:

[0020] The locking actuator comprises a housing 1, in which a turbine shaft 3 is vertically mounted via a first bearing member 2, the lower end of the turbine shaft 3 extends out of the housing 1 and a locking tongue 4 is mounted via a fixing member, a worm gear 5 is provided on the turbine shaft 3, the first bearing member 2 comprises two, and the two first bearing members 2 are respectively located at the upper and lower sides of the worm gear 5, a worm 7 is horizontally mounted via a second bearing member 6 in the housing 1, the middle part of the worm 7 is meshed with the worm gear 5, the second bearing member 6 comprises two, and the two second bearing members 6 are respectively located at the two sides of the meshing part of the worm 7, and a driving motor 8 for driving the worm 7 to rotate is provided in the housing 1.

[0021] Specifically, a limit baffle 9 is provided at the upper end of the turbine shaft 3 , and a proximity switch 10 adapted to the limit baffle 9 is provided in the box body 1 , and the proximity switch 10 is connected to the drive motor 8 .

[0022] The driving motor 8 is specifically a dual-axis stepping motor.

[0023] The vertical state of the turbine shaft 3 is ensured by the two first bearing members 2, and the horizontal state of the worm 7 is ensured by the two second bearing members 6. The self-locking property of the worm gear is utilized, that is, only the worm gear can drive the worm wheel, but the worm wheel cannot drive the worm, so as to effectively avoid the unlocking phenomenon when the load is large and improve the stability after locking.

[0024] The worm 7 is driven to rotate by a dual-axis stepper motor, and the worm 7 transmits the rotational motion to the turbine 5. The lock tongue 4 and the turbine 5 are connected to the worm shaft 3 through a flat key. The worm shaft, the lock tongue and the turbine rotate together to achieve the locking / unlocking function. The solution is simple and reliable, the working process is stable, and the impact is small. During operation, the limit baffle 9 on the eddy current shaft 3 is used in conjunction with the proximity switch to realize the control of the drive motor to ensure the locking accuracy.

[0025] In this embodiment, the driving shaft at the other end of the driving motor 8 away from the worm 7 is connected to a manual driving block 11 , and a protective cover 12 adapted to the manual driving block 11 is detachably mounted on the box body 1 .

[0026] A sealing cover plate 13 is provided at the upper end of the box body 1 , and a lifting handle 14 is hingedly mounted on the sealing cover plate 13 .

[0027] The manual drive block 11 is used for manual unlocking when the equipment is maintained, and cooperates with the carrying handle 14 to facilitate maintenance operations on the equipment.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Locking actuator, characterized in that: It includes a casing, in which a turbine shaft is vertically installed through a first bearing member, the lower end of the turbine shaft extends out of the casing and a locking tongue is installed through a fixing member, a worm wheel is provided on the turbine shaft, the first bearing members include two, and the two first bearing members are respectively located on the upper and lower sides of the worm wheel, a worm is horizontally installed in the casing through a second bearing member, the middle part of the worm is meshed with the worm wheel, the second bearing members include two, and the two second bearing members are respectively located on both sides of the meshing part of the worm, and a driving motor for driving the worm to rotate is provided in the casing.

2. The locking actuator according to claim 1, characterized in that: A limit baffle is provided at the upper end of the turbine shaft, a proximity switch adapted to the limit baffle is provided in the box body, and the proximity switch is connected to the drive motor.

3. The locking actuator according to claim 1, characterized in that: The other end of the driving shaft of the driving motor away from the worm is connected with a manual driving block, and a protective cover adapted to the manual driving block is detachably mounted on the box body.

4. The locking actuator according to claim 1, characterized in that: The upper end of the box body is provided with a sealing cover plate, and a lifting handle is hingedly installed on the sealing cover plate.

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