CN216134384U

CN216134384U - Electric actuator stroke measurement assembly convenient to overhaul

Info

Publication number: CN216134384U
Application number: CN202121676085.7U
Authority: CN
Inventors: 张定学; 周立仕; 唐艳; 李小琴
Original assignee: Wuhan Omec Technology Co ltd
Current assignee: Wuhan Omec Technology Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-03-25
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a stroke measuring component for an electric actuator convenient to overhaul, which comprises a shell, wherein a worm wheel shaft is arranged in the shell, a cam component is sleeved outside the worm wheel shaft, a switch component is arranged in the shell corresponding to the cam component, a sliding groove is formed in the inner side wall of the shell, a sliding block is movably connected in the sliding groove, a switch mounting plate is fixedly connected to one side of the sliding block, the switch component is arranged on the surface of the switch mounting plate, and a positioning component is arranged between the sliding groove and the sliding block. According to the utility model, the sliding groove is formed in the shell, the switch mounting plate is connected in the sliding groove through the sliding block, the position of the sliding block in the sliding groove is fixed through the positioning assembly, the switch assembly is mounted on the switch mounting plate, and the switch mounting plate is pulled to move upwards during maintenance, so that the switch assembly can be moved out of the shell, the maintenance is convenient, and the maintenance efficiency is improved.

Description

Electric actuator stroke measurement assembly convenient to overhaul

Technical Field

The utility model relates to the technical field of electric actuators, in particular to a stroke measuring assembly for an electric actuator, which is convenient to overhaul.

Background

The present electric actuator, the detection of its stroke is accomplished through the stroke detection assembly, and the structure of the stroke detection assembly is as follows: the four-position-limit mechanism comprises four switches (a full-stroke switch, a full-stroke feedback switch, an idle-stroke switch and an idle-stroke feedback switch) and four limit cams, wherein the four limit cams are all arranged on a worm wheel shaft, each limit cam controls one switch, and each limit cam is fixed on the worm wheel shaft through a set screw arranged on each limit cam.

Patent No. 201120459676.9 discloses a stroke detecting assembly for an electric actuator, wherein the fastening and releasing of all cams of a limit cam set are uniformly controlled by a fastening nut, the operating direction of the fastening nut faces to the end cover of the actuator, the operating space for adjustment is greatly improved, and four switches are controlled by two limit cams, but the switches are not convenient to take out for maintenance, and inconvenience is brought during maintenance, and the maintenance efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stroke measuring component for an electric actuator, which is convenient to overhaul.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electric actuator is with stroke measurement subassembly convenient to overhaul, includes the casing, the inside of casing is equipped with the worm-gear axle, the outside of worm-gear axle is located to cam subassembly cover, the inside of casing corresponds the cam subassembly and installs switch assembly, and the spout has been seted up to the inside wall of casing, the inside swing joint of spout has the slider, one side fixedly connected with switch mounting panel of slider, switch assembly installs in switch mounting panel's surface, and is equipped with locating component between spout and the slider.

Preferably, the positioning assembly comprises a spring groove formed in the other side of the sliding block, a first compression spring is arranged inside the spring groove, a universal ball is mounted at the end of the first compression spring, and a ball socket matched with the universal ball is formed inside the sliding groove.

Preferably, the edge of the universal ball is fixedly connected with a guide block, the inner side wall of the spring groove is provided with a guide groove matched with the guide block, and the guide block is movably connected inside the guide groove.

Preferably, the positioning assembly comprises an elastic sheet mounting groove formed in the other side of the sliding block, an elastic sheet is fixedly connected to the inner portion of the elastic sheet mounting groove, a positioning block is fixedly connected to the end portion of the elastic sheet, and a positioning groove matched with the positioning block is formed in the sliding groove.

Preferably, the positioning block is of a hemispherical structure, and the shape of the positioning groove is matched with that of the positioning block.

Preferably, the inside of the worm wheel shaft is of a hollow structure, a through hole is formed in the edge of the worm wheel shaft, a cam fixing piece is arranged inside the through hole and comprises a sleeve and a magnetic rod, and a jack matched with the magnetic rod is formed in the center of the sleeve.

Preferably, the equal fixedly connected with lantern ring in sheathed tube inside both ends, the inside activity of the lantern ring is pegged graft and is had T type locating lever, second compression spring has been cup jointed to the outside of T type locating lever, and a tip fixedly connected with magnet piece of T type locating lever, cam inner wall in the cam subassembly seted up with another tip assorted locating hole of T type locating lever.

Preferably, the other end of the T-shaped positioning rod is provided with a chamfer, and the periphery of the positioning hole is provided with a groove.

Preferably, the inner side wall of the shell is fixedly connected with a magnetic rod box, and the magnetic rod is placed in the magnetic rod box.

Preferably, the end part of the magnetic rod is sleeved with a rubber sleeve, and the rubber sleeve is inserted in the magnetic rod box in an interference manner.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the sliding groove is formed in the shell, the switch mounting plate is connected in the sliding groove through the sliding block, the position of the sliding block in the sliding groove is fixed through the positioning assembly, the switch assembly is mounted on the switch mounting plate, and the switch mounting plate is pulled to move upwards during maintenance, so that the switch assembly can be moved out of the shell, the maintenance is convenient, and the maintenance efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the worm gear shaft of the present invention;

FIG. 3 is a schematic structural diagram of a positioning assembly in embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a positioning assembly in embodiment 2 of the present invention.

In the figure: 1. a housing; 2. a worm gear shaft; 3. a switch assembly; 4. a cam assembly; 5. a chute; 6. a slider; 7. a switch mounting plate; 8. a spring slot; 9. a first compression spring; 10. a universal ball; 11. a ball socket; 12. a guide block; 13. a guide groove; 14. the elastic sheet mounting groove; 15. a spring plate; 16. positioning blocks; 17. positioning a groove; 18. a sleeve; 19. a magnetic bar; 20. a jack; 21. a collar; 22. a T-shaped positioning rod; 23. a second compression spring; 24. a magnet piece; 25. a magnetic bar box; 26. positioning holes; 27. a rubber sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, the present invention provides a stroke measurement assembly for an electric actuator, which is convenient for maintenance, and includes a housing 1, a worm gear shaft 2 is disposed inside the housing 1, a cam assembly 4 is sleeved outside the worm gear shaft 2, a switch assembly 3 is mounted inside the housing 1 corresponding to the cam assembly 4, the housing 1, the worm gear shaft 2, the cam assembly 4, and the switch assembly 3 are components of the stroke measurement assembly in the prior art, and a specific working principle thereof is disclosed.

In order to facilitate the maintenance of the switch assembly 3, in this embodiment, a sliding groove 5 is formed in the inner side wall of the housing 1, a sliding block 6 is movably connected inside the sliding groove 5, the sliding block 6 can move up and down inside the sliding groove 5, the position of the sliding block 6 in the sliding groove 5 is limited by a positioning assembly, a switch mounting plate 7 is fixed on one side of the sliding block 6 through a connecting rod, the switch assembly 3 is mounted on the surface of the switch mounting plate 7, and when the maintenance is needed, the switch mounting plate 7 is pulled upwards, so that the switch assembly 3 can be moved out of the housing 1.

Further, in this embodiment, the positioning assembly includes a spring slot 8 opened on the other side of the sliding block 6, a first compression spring 9 is placed inside the spring slot 8, a universal ball 10 is installed at an end of the first compression spring 9, a ball socket 11 matched with the universal ball 10 is opened inside the sliding slot 5, after the sliding block 6 is inserted into the corresponding position of the sliding slot 5, the first compression spring 9 can extrude the universal ball 10 to be inserted into the ball socket 11, and the position of the sliding block 6 in the sliding slot 5 is fixed; at limit portion fixed connection guide block 12 of universal ball 10, spring groove 8's inside wall has seted up with guide block 12 assorted guide slot 13, guide block 12 swing joint in guide slot 13's inside, through the cooperation of guide block 12 and guide slot 13, does benefit to the angle of restricting universal ball 10 itself, avoids its whole to rotate in spring groove 8, causes the distortion of first compression spring 9.

In the prior art, the cam assembly 4 is fixed through the nut, but after long-term use, the nut and the worm wheel shaft 2 are corroded and are hard to disassemble, so that in the embodiment, a new installation mode is provided for solving the problems, the inner part of the worm wheel shaft 2 is set to be a hollow structure, a through hole is formed in the edge part of the worm wheel shaft 2, a cam fixing piece is arranged in the through hole and used for fixing the cam assembly 4, the traditional nut fixing mode is changed, and the cam assembly 4 is convenient to disassemble and assemble, and the method is as follows;

in this embodiment, the cam fixing member includes a sleeve 18 and a magnetic rod 19, a socket 20 matching with the magnetic rod 19 is formed in the center of the sleeve 18, a sleeve ring 21 is fixedly connected to both ends inside the sleeve 18, a T-shaped positioning rod 22 is movably inserted into the sleeve ring 21, a second compression spring 23 is sleeved outside the T-shaped positioning rod 22, a magnet piece 24 is fixedly connected to one end of the T-shaped positioning rod 22, a positioning hole 26 matching with the other end of the T-shaped positioning rod 22 is formed in the inner wall of the cam in the cam assembly 4, when the cam is installed, the cam is sleeved outside the worm wheel shaft 2, the second compression spring 23 can press the T-shaped positioning rod 22 to be inserted into the positioning hole 26, so as to fix the cam, when the cam needs to be disassembled, the magnetic rod 19 is inserted into the socket 20 in the sleeve 18, the magnet piece 24 receives the suction force of the magnetic rod 19 and is adsorbed on the surface of the magnetic rod 19, the second compression spring 23 is compressed, and the T-shaped positioning rod 22 is separated from the positioning hole 26, so that the cam is convenient to assemble and disassemble;

further, in this embodiment, be equipped with the chamfer at another tip of T type locating lever 22, the groove has been seted up to the periphery of locating hole 26, makes things convenient for T type locating lever 22 to insert in locating hole 26, at casing 1's inside wall fixed connection bar magnet box 25, places bar magnet 19 in the inside of bar magnet box 25, and rubber sleeve 27 is cup jointed to bar magnet 19's tip, and rubber sleeve 27 interference is pegged graft in the inside of bar magnet box 25, has made things convenient for placing of bar magnet 19.

Example 2

Referring to fig. 4, the difference between the present embodiment and embodiment 1 is:

locating component is including offering the shell fragment mounting groove 14 of slider 6 opposite side, the inside fixedly connected with shell fragment 15 of shell fragment mounting groove 14, the tip fixedly connected with locating piece 16 of shell fragment 15, spout 5's inside seted up with locating piece 16 assorted constant head tank 17, after inserting slider 6 the corresponding position of spout 5, shell fragment 15 can extrude locating piece 16 and insert in constant head tank 17, fix the position of slider 6 in spout 5, and set up locating piece 16 into hemispherical structure, the shape and the locating piece 16 phase-match of constant head tank 17, be convenient for the butt joint between locating piece 16 and the constant head tank 17, the separation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a stroke measurement subassembly for electric actuator convenient to overhaul, includes casing (1) and cam pack (4), the inside of casing (1) is equipped with worm-gear axle (2), the outside of worm-gear axle (2) is located to cam pack (4) cover, switch module (3), its characterized in that are installed to cam pack (4) corresponding in the inside of casing (1): spout (5) have been seted up to the inside wall of casing (1), the inside swing joint of spout (5) has slider (6), one side fixedly connected with switch mounting panel (7) of slider (6), install in the surface of switch mounting panel (7) switch module (3), and be equipped with locating component between spout (5) and slider (6).

2. The stroke measurement assembly for an electric actuator for easy maintenance according to claim 1, wherein: the positioning assembly comprises a spring groove (8) formed in the other side of the sliding block (6), a first compression spring (9) is arranged inside the spring groove (8), a universal ball (10) is mounted at the end of the first compression spring (9), and a ball socket (11) matched with the universal ball (10) is formed in the sliding groove (5).

3. The stroke measurement assembly for an electric actuator for easy maintenance according to claim 2, wherein: the limit fixedly connected with guide block (12) of universal ball (10), guide slot (13) with guide block (12) assorted is seted up to the inside wall in spring groove (8), guide block (12) swing joint is in the inside of guide slot (13).

4. The stroke measurement assembly for an electric actuator for easy maintenance according to claim 1, wherein: the positioning assembly comprises an elastic piece mounting groove (14) formed in the other side of the sliding block (6), an elastic piece (15) is fixedly connected to the inner portion of the elastic piece mounting groove (14), a positioning block (16) is fixedly connected to the end portion of the elastic piece (15), and a positioning groove (17) matched with the positioning block (16) is formed in the sliding groove (5).

5. The stroke measurement assembly for an electric actuator for easy maintenance according to claim 4, wherein: the positioning block (16) is of a hemispherical structure, and the positioning groove (17) is matched with the positioning block (16) in shape.

6. The stroke measurement assembly for an electric actuator for easy maintenance according to claim 1, wherein: the interior of the worm wheel shaft (2) is of a hollow structure, a through hole is formed in the edge of the worm wheel shaft (2), a cam fixing piece is arranged in the through hole and comprises a sleeve (18) and a magnetic rod (19), and a jack (20) matched with the magnetic rod (19) is formed in the center of the sleeve (18).

7. The stroke measurement assembly for an electric actuator for easy maintenance of claim 6, wherein: the equal fixedly connected with lantern ring (21) in inside both ends of sleeve pipe (18), the inside activity of the lantern ring (21) is pegged graft and is had T type locating lever (22), second compression spring (23) have been cup jointed to the outside of T type locating lever (22), and a tip fixedly connected with magnet piece (24) of T type locating lever (22), cam inner wall in cam subassembly (4) has been seted up with another tip assorted locating hole (26) of T type locating lever (22).

8. The stroke measurement assembly for an electric actuator for easy maintenance of claim 7, wherein: the other end of the T-shaped positioning rod (22) is provided with a chamfer, and the periphery of the positioning hole (26) is provided with a groove.

9. The stroke measurement assembly for an electric actuator for easy maintenance of claim 6, wherein: the inner side wall of the shell (1) is fixedly connected with a magnetic bar box (25), and the magnetic bar (19) is placed in the magnetic bar box (25).

10. The stroke measurement assembly for an electric actuator for easy maintenance of claim 9, wherein: the end part of the magnetic rod (19) is sleeved with a rubber sleeve (27), and the rubber sleeve (27) is inserted in the magnetic rod box (25) in an interference mode.