Locking device for electric actuating mechanism

Abstract

The utility model discloses a locking device for an electric actuating mechanism. The shaft sleeve is connected with a copper nut of the electric actuating mechanism and used for locking and fixing the copper nut, the connecting piece is connected with the shaft sleeve, the torque wrench is connected with the connecting piece and used for driving the connecting piece to rotate, the positioning piece is connected with the connecting piece and used for positioning the shaft sleeve, and the connecting piece is provided with a containing groove. Part of the shaft sleeve is contained in the containing groove. According to the locking device for the electric actuating mechanism, through the arrangement of the shaft sleeve, positioning and locking of the copper nut are achieved, the torque wrench and the shaft sleeve are connected through the connecting piece, the locking torque value of the copper nut can be quantized, the working intensity of operators is reduced, the shaft sleeve is positioned through the positioning piece, and the locking accuracy is improved. The connecting piece and the shaft sleeve are of a detachable structure, replacement and maintenance are convenient, and the use cost of the locking device is saved.

Description

Technical Field

[0001] The utility model relates to the field of electric actuator maintenance, in particular to a locking device used for the electric actuator. Background Art

[0002] An electric actuator is a drive device that can provide linear or rotary motion. The actuator uses liquid, gas, electricity and other energy sources to convert into driving action. Its basic types include partial rotation, multi-rotation and linear travel. The electric actuator is equipped with a valve screw for adjustment, and the electric actuator can be adjusted by turning the valve screw. At present, the electric actuator is equipped with a copper nut to engage with the valve screw to drive the valve to move, but the existing locking device for the electric actuator cannot quantify the locking torque of the copper nut. Sometimes, the relevant operating equipment will fall off during the maintenance process, which will cause damage to the electric actuator. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a locking device for an electric actuator.

[0004] The technical solution adopted by the utility model to solve the technical problem is: construct a locking device for an electric actuator, which includes a sleeve connected to a copper nut of the electric actuator and used to lock and fix the copper nut, a connecting piece connected to the sleeve, a torque wrench connected to the connecting piece and used to drive the connecting piece to rotate, and a positioning piece connected to the connecting piece and used to position the sleeve;

[0005] The connecting member is provided with a receiving groove, and part of the shaft sleeve is received in the receiving groove.

[0006] In some embodiments, the sleeve is provided with a receiving groove for accommodating the copper nut, and the receiving groove is provided with a threaded portion matching the main shaft of the electric actuator.

[0007] In some embodiments, the connecting member is further provided with a connecting portion for connecting to the torque wrench, and the cross-section of the connecting portion is a polygon.

[0008] In some embodiments, the connecting member is provided with a plurality of positioning holes for installing the positioning member, the positioning holes are communicated with the accommodating groove, and the bushing is provided with fastening holes corresponding to the positioning holes.

[0009] In some embodiments, the number of the positioning holes is two, and the two positioning holes are symmetrically arranged about the central axis of the accommodating groove.

[0010] In some embodiments, the positioning member includes a first positioning portion and a second positioning portion fixedly connected to the first positioning portion;

[0011] The first positioning portion is installed in the positioning hole and is threadedly connected to the positioning hole;

[0012] The second positioning portion is installed in the fastening hole.

[0013] In some embodiments, the cross-section of the receiving groove is circular, the diameter of the receiving groove is 130 mm to 140 mm, the axial length of the receiving groove is 25 mm to 35 mm, and the outer wall diameter of the sleeve is 130 mm to 140 mm.

[0014] In some embodiments, the locking device for the electric actuator further includes a lever arm extension rod, and the connecting member is provided with an interface portion for connecting the lever arm extension rod, and the interface portion is located between the accommodating groove and the connecting portion.

[0015] In some embodiments, the torque wrench is provided with a display element for displaying the operating torque value, a torque adjustment button, a torque protection constant value adjustment button, a steering adjustment button and a switch button.

[0016] In some embodiments, the torque wrench is also provided with a buzzer for alarming when the torque wrench reaches a torque protection set value.

[0017] The implementation of the utility model has the following beneficial effects: the locking device for the electric actuator realizes the positioning and locking of the copper nut through the setting of the shaft sleeve, and uses a connecting piece to respectively connect the torque wrench and the shaft sleeve, which can quantify the locking torque value of the copper nut, reducing the work intensity of the operator, and the positioning piece is used to position the shaft sleeve, so that the connecting piece and the shaft sleeve are a detachable structure, which is convenient for replacement and maintenance, and saves the use cost of the locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the electric actuator;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of a locking device for an electric actuator in some embodiments of the utility model;

[0021] Figure 3 It is a schematic diagram of the structural decomposition of a locking device for an electric actuator in some embodiments of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the shaft sleeve in some embodiments of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the connecting member in some embodiments of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the positioning member in some embodiments of the utility model. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0026] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] See also Figures 2 to 6The utility model discloses a locking device for an electric actuator. The electric actuator 5 is a driving device that can provide linear or rotary motion. The electric actuator 5 uses liquid, gas, electricity and other energy sources to convert into driving action. The electric actuator 5 is provided inside the electric actuator 5. The electric actuator 5 is also provided with a valve screw for adjustment. The electric actuator is equipped with a copper nut 51 to drive the valve to move with the valve screw. Figure 1 As shown, the electric actuator 5 mainly includes a copper nut 51 and a main shaft 52 .

[0028] Among them, the locking device for the electric actuator includes a sleeve 1 connected to the copper nut 51 of the electric actuator 5 and used to lock and fix the copper nut 51, a connecting piece 2 connected to the sleeve 1, a torque wrench 3 connected to the connecting piece 2 and used to drive the connecting piece 2 to rotate, and a positioning piece 4 connected to the connecting piece 2 and used to position the sleeve 1.

[0029] Specifically, the connecting member 2 is provided with a receiving groove 21, which is used to position the sleeve 1. Part of the sleeve 1 is received in the receiving groove 21. The outer wall diameter of the sleeve 1 is slightly smaller than the diameter of the receiving groove 21, so that the receiving groove 21 can position the sleeve 1. When the sleeve 1 is located in the receiving groove 21, the sleeve 1 is positioned using the positioning member 4, and then the torque wrench 3 can be used to drive the connecting member 2 to drive the sleeve 1 to rotate, so that the sleeve 1 can be locked or loosened.

[0030] In addition, the cross section of the receiving groove 21 is circular, the diameter of the receiving groove 21 is 130 mm to 140 mm, the axial length of the receiving groove 21 is 25 mm to 35 mm, and the outer wall diameter of the sleeve 1 is 130 mm to 140 mm. The diameter of the receiving groove 21 is preferably 137.5 mm, the outer wall diameter of the sleeve 1 is preferably 137.4 mm, and the axial length of the receiving groove 21 is preferably 30 mm.

[0031] Combination Figures 1 to 4 As shown, the sleeve 1 is provided with a receiving groove 11 for accommodating the copper nut 51, and the receiving groove 11 is provided with a threaded portion 12 matching the main shaft 52 of the electric actuator 5. The sleeve 1 is connected to the main shaft 52 of the electric actuator 5 through the threaded portion 12, and the copper nut 51 is fixedly connected to one end of the main shaft 52, and the portion of the copper nut 51 protruding from the main shaft 52 is positioned between the main shaft 52 and the receiving groove 11. When the sleeve 1 rotates toward the direction of the main shaft 52, the sleeve 1 presses the copper nut 51 to complete the positioning and fixing of the copper nut 51.

[0032] Furthermore, the connector 2 is provided with a plurality of positioning holes 23 for installing the positioning member 4, the positioning holes 23 are communicated with the receiving groove 21, and the sleeve 1 is provided with fastening holes 13 arranged corresponding to the positioning holes 23. The arrangement of the positioning member 4 makes the connector 2 and the sleeve 1 a detachable structure, which is convenient for replacement and maintenance, and saves the use cost of the locking device. Preferably, the number of the positioning holes 23 is two, and the two positioning holes 23 are symmetrically arranged about the central axis of the receiving groove 21. In some other embodiments, the number and arrangement of the positioning holes 23 can be set according to the actual application requirements of the locking device, and are not specifically limited here.

[0033] like Figure 6 As shown, the positioning member 4 includes a first positioning portion 41 and a second positioning portion 42 fixedly connected to the first positioning portion 41. The first positioning portion 41 is installed in the positioning hole 23 and is threadedly connected to the positioning hole 23, and the second positioning portion 42 is installed in the fastening hole 13. It can be understood that the first positioning portion 41 and the second positioning portion 42 can be formed in one piece, the diameter of the first positioning portion 41 is larger than the diameter of the second positioning portion 42, the first positioning portion 41 has an external thread, and the positioning hole 23 is a threaded hole. When the connector 2 and the sleeve 1 need to be positioned, the first positioning portion 41 can be installed in the positioning hole 23, and the first positioning portion 41 can be twisted so that the second positioning portion 42 is positioned in the fastening hole 13 to complete the positioning between the connector 2 and the sleeve 1.

[0034] like Figure 3 As shown, the connector 2 is further provided with a connecting portion 22 for connecting with the torque wrench 3, and the cross section of the connecting portion 22 is a polygon, which matches the shape of the output end of the torque wrench 3. In some other embodiments, the cross section of the connecting portion 22 may also be an ellipse, a triangle, etc., to meet the requirements of use.

[0035] For example Figure 2 and Figure 3 As shown, the locking device for the electric actuator also includes a lever arm extension rod 6, and an interface portion 24 for connecting the lever arm extension rod 6 is provided on the connecting member 2, and the interface portion 24 is located between the accommodating groove 21 and the connecting portion 22. The interface portion 24 and the lever arm extension rod 6 can be threadedly connected, and the lever arm extension rod 6 can be adjusted in position according to the actual size of the space at the site. When the torque wrench 3 pulls the connecting member 2, the lever arm extension rod 6 can cooperate with other fixed structures to provide a reaction force for the torque wrench 3, so that the electric actuator 5 can pull the connecting member 2 more easily.

[0036] In some embodiments, a display element 31 is provided on the torque wrench 3, which is used to display the torque value during operation to facilitate the operator to adjust the torque, thereby realizing the function of quantifying the locking torque of the copper nut 51 and preventing damage to the electric actuator 5 due to excessive locking torque.

[0037] Furthermore, the torque wrench 3 is also provided with a buzzer 36 for alarming when the torque wrench 3 reaches the torque protection set value, the torque wrench 3 is also provided with a torque adjustment button 32 to adjust the torque value output by the torque wrench 3, a torque protection set value adjustment button 33 to adjust the protection set value of the torque wrench 3, a steering adjustment button 34 to control the steering of the connecting member 2, and a switch button 35 to control the opening and closing of the torque wrench 3. The torque wrench 3 is a mature product on the market, and different specifications can be selected according to actual conditions.

[0038] It can be understood that the locking device for the electric actuator realizes the positioning and locking of the copper nut 51 through the setting of the sleeve 1, and uses the connecting piece 2 to respectively connect the torque wrench 3 and the sleeve 1, which can quantify the locking torque value of the copper nut 51, reducing the work intensity of the operator, and the positioning piece 4 is used to position the sleeve 1, so that the connecting piece 2 and the sleeve 1 are a detachable structure, which is convenient for replacement and maintenance, and saves the use cost of the locking device.

[0039] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A locking device for an electric actuator, characterized in that: It comprises a shaft sleeve (1) connected to a copper nut (51) of the electric actuator (5) and used to lock and fix the copper nut (51), a connecting piece (2) connected to the shaft sleeve (1), a torque wrench (3) connected to the connecting piece (2) and used to drive the connecting piece (2) to rotate, and a positioning piece (4) connected to the connecting piece (2) and used to position the shaft sleeve (1); The connecting member (2) is provided with a receiving groove (21), and a portion of the shaft sleeve (1) is received in the receiving groove (21).

2. The locking device for an electric actuator according to claim 1, characterized in that: The shaft sleeve (1) is provided with a receiving groove (11) for receiving the copper nut (51), and the receiving groove (11) is provided with a threaded portion (12) matching the main shaft (52) of the electric actuator (5).

3. The locking device for an electric actuator according to claim 1, characterized in that: The connecting piece (2) is also provided with a connecting portion (22) for connecting to the torque wrench (3); the connecting portion (22) has a polygonal cross section.

4. The locking device for an electric actuator according to claim 1, characterized in that: The connecting member (2) is provided with a plurality of positioning holes (23) for mounting the positioning member (4), the positioning holes (23) being communicated with the receiving groove (21), and the shaft sleeve (1) is provided with fastening holes (13) corresponding to the positioning holes (23).

5. The locking device for an electric actuator according to claim 4, characterized in that: The number of the positioning holes (23) is two, and the two positioning holes (23) are symmetrically arranged about the central axis of the accommodating groove (21).

6. The locking device for an electric actuator according to claim 4, characterized in that: The positioning member (4) comprises a first positioning portion (41) and a second positioning portion (42) fixedly connected to the first positioning portion (41); The first positioning portion (41) is installed in the positioning hole (23) and is threadedly connected to the positioning hole (23); The second positioning portion (42) is installed in the fastening hole (13).

7. The locking device for an electric actuator according to claim 1, characterized in that: The cross section of the containing groove (21) is circular, the diameter of the containing groove (21) is 130 mm to 140 mm, the axial length of the containing groove (21) is 25 mm to 35 mm, and the outer wall diameter of the shaft sleeve (1) is 130 mm to 140 mm.

8. The locking device for an electric actuator according to claim 3, characterized in that: The locking device for the electric actuator further comprises a lever arm extension rod (6), the connecting member (2) being provided with an interface portion (24) for connecting the lever arm extension rod (6), the interface portion (24) being located between the accommodating groove (21) and the connecting portion (22).

9. The locking device for an electric actuator according to claim 1, characterized in that: The torque wrench (3) is provided with a display element (31) for displaying an operating torque value, a torque adjustment button (32), a torque protection fixed value adjustment button (33), a steering adjustment button (34), and a switch button (35).

10. The locking device for an electric actuator according to claim 1, characterized in that: The torque wrench (3) is also provided with a buzzer (36) for sounding an alarm when the torque wrench (3) reaches a torque protection set value.

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