CN217108414U

CN217108414U - Stop position setting device for electric actuator

Info

Publication number: CN217108414U
Application number: CN202220935856.8U
Authority: CN
Inventors: 王志全; 包永强
Original assignee: Beijing Kawaden Co ltd
Current assignee: Beijing Kawaden Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-02
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses an electric actuator stop position setting device, its characterized in that: the electric motor comprises an upper shell, a lower shell, a motor, a reduction box, a motor gear, an intermediate gear, a worm wheel, a gear shaft, a main gear, an output shaft, a cam block, O-shaped rubber rings, cam plates, snap rings and a microswitch, wherein the motor is fixed on the lower shell, the reduction box is connected with the motor, the motor gear is fixed on a shaft of the reduction box, the intermediate gear is meshed with the motor gear, the worm is fixed on a central hole of the intermediate gear, the worm wheel is meshed with the worm, the gear shaft is installed in a central hole of the worm wheel, the main gear is meshed with the gear shaft, the output shaft is installed on the main gear, the cam shaft is connected with the output shaft, the cam block is installed on the cam shaft, the O-shaped rubber rings are installed in grooves on the upper side and the lower side of the cam block, the cam plates are installed on the two sides of the O-shaped rubber rings, the snap rings are fixed on the two sides of the cam plates, and the microswitch is used for cutting off the power supply of the motor when being touched by the cam plates. When the motor rotates, the motor gear, the intermediate gear, the worm wheel, the gear shaft, the main gear, the output shaft, the cam block and the cam sheet are driven to rotate simultaneously, and when the motor runs to a preset position, the cam sheet is directly rotated to trigger the micro switch to cut off the power supply of the motor, so that the setting of the stop position of the actuator is realized.

Description

Stop position setting device for electric actuator

The technical field is as follows:

the utility model belongs to the electric actuator field, specifically speaking belong to rotary electric actuator stop position's setting device.

Background art:

the existing electric actuator has the following disadvantages: 1. the existing actuator stop position setting device is of an integral cam structure, when the stop position is set, a jackscrew for a cam is fixed on a cam shaft after the cam is rotated to a proper position, the adjusting precision of the structure is low, the application occasion with high precision requirement cannot be met, and 2, when the stop position needs to be changed, the ejecting trace of the jackscrew fixed on the cam shaft can block the rotation of the cam, and the debugging difficulty is increased.

The invention content is as follows:

an object of the utility model is to provide an executor position setting device, simple structure, with low costs, convenient operation. Overcomes the defects of the prior common actuator position setting device.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a stop position setting device of an electric actuator comprises an upper shell, a lower shell, a motor, a reduction box, a motor gear, an intermediate gear, a worm wheel, a gear shaft, a main gear, an output shaft, cam shafts, cam blocks, O-shaped rubber rings, cam plates, snap rings and a micro switch, wherein the motor is fixed on the lower shell, the reduction box is connected with the motor, the motor gear is fixed on a shaft of the reduction box, the intermediate gear is meshed with the motor gear, the worm is fixed on a central hole of the intermediate gear, the worm wheel is meshed with the worm, the gear shaft is installed on a central hole of the worm wheel, the main gear is meshed with the gear shaft, the output shaft is installed on the main gear, the cam shafts are connected with the output shaft, the cam blocks are installed on the cam shafts, the O-shaped rubber rings are installed in grooves on the upper side and the lower side of the cam blocks, the cam plates are installed on the two sides of the O-shaped rubber rings, and the snap rings are fixed on the two sides of the cam plates, and the micro switch cuts off the power supply of the motor when the cam plates is touched by the cam plates. The diameter of the O-shaped rubber ring is larger than the depth of the cam block groove, the O-shaped rubber ring partially protrudes from the upper part of the cam block groove, a clamping ring is arranged on the cam block to press the cam sheet, so that the cam sheet is in a state of extruding the O-shaped rubber ring, and the cam sheet is in clearance fit with the cam block.

According to the utility model discloses, can reach following effect:

the electric actuator is electrified, and the motor drives the motor gear, the intermediate gear, the worm wheel, the gear shaft, the main gear, the output shaft, the cam block and the cam sheet to rotate when running. Notches are processed on the periphery of the cam plate, when the actuator rotates to a preset stop position, a straight screwdriver is inserted into the notches of the cam plate, the cam plate is directly rotated to trigger the micro switch, and the triggered micro switch cuts off the power supply of the motor, so that the stop position of the actuator is set.

Drawings

Fig. 1 is the structure diagram of the present invention, wherein, 1 is a motor, 2 is a reduction gearbox, 3 is a reduction gearbox fixing plate, 4 is a motor gear, 5 is an intermediate gear, 6 is a bearing cap, 7 is a master gear, 8 is an output shaft, 9 is a worm wheel, 10 is a lower housing, 11 is an output shaft fixing plate, 12 is a cam plate, 13 is a snap ring, 14 is a worm, 15 is a cam shaft, and 16 is a micro switch.

Fig. 2 is a schematic structural view of the present invention, in which 12 is a cam plate, 13 is a snap ring, 26 is an O-shaped rubber ring, and 27 is a cam block.

Fig. 3 is the structure explosion diagram of the utility model, wherein, 1 is the motor, 2 is the reducing gear box, 3 is the reducing gear box fixed plate, 4 is the motor gear, 5 is the intermediate gear, 6 is the bearing cap, 7 is the master gear, 8 is the output shaft, 9 is the worm wheel, 10 is the casing down, 12 is the cam piece, 13 is the snap ring, 14 is the worm, 15 is the camshaft, 16 is micro-gap switch, 17 is the upper housing, 18 is the preceding fixed bearing of worm, 19 is fixed bearing under the output shaft, 20 is fixed bearing on the output shaft, 21 is fixed bearing under the gear shaft, 22 is the gear shaft, 23 is fixed bearing on the gear shaft, 24 is fixed bearing behind the worm, 25 is the worm fixed plate

Fig. 4 is an exploded view of the present invention, wherein 12 is a cam piece, 13 is a snap ring, 26 is an O-ring, and 27 is a cam block.

Fig. 5 is an appearance diagram of the structure of the present invention.

Detailed Description

The invention is described in detail below with reference to the attached drawings:

the utility model discloses an electric actuator stop position setting device, its characterized in that: a stop position setting device of an electric actuator comprises an upper shell 17, a lower shell 10, a motor 1 fixed on the lower shell, a reduction box 2 connected with the motor, a motor gear 4 fixed on the shaft of the reduction box, an intermediate gear 5 meshed with the motor gear, a worm 14 fixed on the central hole of the intermediate gear, a worm wheel 9 meshed with the worm, a gear shaft 22 installed on the central hole of the worm wheel, a main gear 7 meshed with the gear shaft, an output shaft 8 installed on the main gear, a cam shaft 15 connected with the output shaft, a cam block 27 installed on the cam shaft, O-shaped rubber rings 26 installed in grooves on the upper side and the lower side of the cam block, cam sheets 12 installed on the two sides of the O-shaped rubber rings, snap rings 13 fixed on the two sides of the cam sheets, and a microswitch 16 for cutting off the power supply of the motor when being triggered by the cam sheets.

Claims

1. An electric actuator stop position setting device characterized in that:

an electric actuator stop position setting device comprises an upper shell (17), a lower shell (10), a motor (1) fixed on the lower shell, a reduction box (2) connected with the motor, a motor gear (4) fixed on the shaft of the reduction box, an intermediate gear (5) meshed with the motor gear, a worm (14) fixed on the central hole of the intermediate gear, a worm wheel (23) meshed with the worm, a gear shaft (22) installed at the central hole of the worm wheel, a master gear (7) meshed with the gear shaft, an output shaft (8) installed on the master gear, a cam shaft (15) connected with the output shaft, a cam block (27) installed on the cam shaft, O-shaped rubber rings (26) installed in grooves at the upper side and the lower side of the cam block (27), cam sheets (12) installed at the two sides of the O-shaped rubber rings (26), and snap rings (13) fixed at the two sides of the cam sheets (12), a micro switch (16) which cuts off the power supply of the motor when being triggered by the cam sheet (12).

2. The electric actuator stop position setting device according to claim 1, characterized in that:

a circular groove is respectively processed on the upper table surface and the lower table surface of the cam block (27), an O-shaped rubber ring (26) is installed, the diameter of the O-shaped rubber ring (26) is larger than the depth of the circular groove, and the part of the O-shaped rubber ring (26) protrudes out of the table surface of the circular groove.

3. The electric actuator stop position setting device according to claim 1, characterized in that:

the upper side and the lower side of the cam block (27) are provided with cam sheets (12), the cam sheets (12) press the O-shaped rubber ring (26) to be flush with the table surface of the cam block (27), and the cam sheets (12) are fixed by using the clamping ring (13) so that the cam sheets (12) are in an extrusion state on the O-shaped rubber ring (26).

4. The electric actuator stop position setting device according to claim 1, characterized in that:

the cam sheet (12) is in clearance fit with the cam block (27), a notch is machined on the periphery of the cam sheet (12), a straight screwdriver is inserted into the notch, the cam sheet (12) is rotated to trigger the micro switch (16) to cut off the power supply of the motor, and the setting of the stop position of the actuator is completed.