CN215172669U

CN215172669U - Power output transmission structure for electric actuating mechanism

Info

Publication number: CN215172669U
Application number: CN202121477102.4U
Authority: CN
Inventors: 邢国旗
Original assignee: Shanghai Huawu Xingli Flow Control Co ltd
Current assignee: Shanghai Huawu Xingli Flow Control Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-12-14
Anticipated expiration: 2031-06-30

Abstract

The utility model belongs to the technical field of electric actuator technique and specifically relates to a power take off transmission structure for electric actuator. The utility model provides a power take off transmission structure for electric actuator, includes the box, its characterized in that: one side of the box body is connected with the box cover, a motor is arranged on one side in the box body, a first half clutch one end is arranged at the position of an output shaft of the motor, a second half clutch one end which is meshed with the first half clutch is arranged at the other end of the first half clutch, a first gear transmission assembly one end is arranged at the other end of the second half clutch, the other end of the first gear transmission assembly is connected with one end of a second gear transmission assembly through a first gear, the other end of the second gear transmission assembly is connected with one end of a worm through a second gear, and a worm gear assembly which is meshed with the worm gear is arranged at the other end of the worm. Compared with the prior art, the device has the advantages of compact structure, lower cost, high transmission precision and capability of keeping excellent performance for a long time.

Description

Power output transmission structure for electric actuating mechanism

Technical Field

The utility model belongs to the technical field of electric actuator technique and specifically relates to a power take off transmission structure for electric actuator.

Background

The application of automation equipment is more and more extensive, automation management is gradually popularized in daily life and industrial production, automation engineering is required to be executed, various automation electromechanical equipment is relied on, an electric actuating mechanism plays an important role in the automation equipment, automatic control of gas, fluid medium and the like needs the electric actuating mechanism, effective work of work output of the electric actuating mechanism mainly meets required force, and the power performance of the electric actuating mechanism is required to meet the requirement. With the increase of the application range of the electric actuating mechanism, the internal power transmission structures of the electric actuating mechanism on the market are various, but most electric actuating mechanisms have the defects of complicated structure, overlarge volume, low precision and short service life.

Due to the defects of the design of the power transmission structure of the traditional electric actuating mechanism, certain influence is brought to production, for example, the whole volume of the mechanism is large, the transportation cost is high, the installation is difficult, and the manual work efficiency is reduced; the low transmission precision will cause action delay, can't accomplish moment, the accurate control in position, and the not long puzzlement that will bring frequent maintenance or change equipment will also be given production to life.

Disclosure of Invention

The utility model discloses an overcome prior art not enough, provide a power take off transmission structure for electric actuator, compact structure, the cost is lower, and the transmission precision is high, can keep the good performance for a long time.

In order to realize the purpose, the power output transmission structure for the electric actuating mechanism comprises a box body and is characterized in that: one side of the box body is connected with the box cover, a motor is arranged on one side in the box body, a first half clutch one end is arranged at the position of an output shaft of the motor, a second half clutch one end which is meshed with the first half clutch is arranged at the other end of the first half clutch, a first gear transmission assembly one end is arranged at the other end of the second half clutch, the other end of the first gear transmission assembly is connected with one end of a second gear transmission assembly through a first gear, the other end of the second gear transmission assembly is connected with one end of a worm through a second gear, and a worm gear assembly which is meshed with the worm gear is arranged at the other end of the worm.

First gear drive assembly include first gear shaft and the first deep groove ball bearing, first bearing spacer, the second deep groove ball bearing of cover on first gear shaft, be located the second and half clutch other end and connect first gear shaft one end, the first gear shaft other end is equipped with first tooth portion, first tooth portion one end butt first deep groove ball bearing one end, the first deep groove ball bearing other end is equipped with first bearing spacer one end, the first bearing spacer other end is equipped with second deep groove ball bearing, be equipped with the circlip for the primary shaft between second deep groove ball bearing's slot and the first gear shaft.

And an elastic check ring for a second shaft is arranged between the first gear shaft and the second clutch, and elastic check rings for first holes are arranged between the first deep groove ball bearing, the second deep groove ball bearing and the box body.

The second gear transmission assembly comprises a second gear shaft, a third deep groove ball bearing, a second bearing spacer and a fourth deep groove ball bearing, the third deep groove ball bearing, the second bearing spacer and the fourth deep groove ball bearing are sleeved on the second gear shaft, the second gear shaft is arranged below the first gear shaft, a second tooth part is arranged at one end of the second gear shaft, one end of the second tooth part is abutted to one end of the third deep groove ball bearing, the other end of the third deep groove ball bearing is provided with one end of the second bearing spacer, the other end of the second bearing spacer is provided with the fourth deep groove ball bearing, and a third elastic check ring for shaft is arranged between the fourth deep groove ball bearing and the second gear shaft.

And elastic check rings for second holes are arranged between the third deep groove ball bearing and the box body and between the fourth deep groove ball bearing and the box body.

The first gear is sleeved at one end of the second gear shaft and meshed with the first tooth part of the first gear shaft, a first flat key is arranged between the inner side of the first gear and the second gear shaft, and an elastic check ring for a fourth shaft is arranged between the outer side of the first gear and the second gear shaft.

The bearing pressing plate is fixed on the box body through a first screw.

The second gear is sleeved at the other end of the worm, a second flat key is arranged between the inner side of the second gear and the worm, one end of a positioning plate is arranged at the outer side of the second gear, one end of a gear pressing plate is arranged at the other end of the positioning plate, the other end of the gear pressing plate is provided with a second screw head, the tail part of the second screw penetrates through the gear pressing plate and the positioning plate respectively and is fastened on the second gear, and the second gear is meshed with a second tooth part of a second gear shaft.

The structure of locating plate be semi-circular structure, be equipped with the screw hole on the locating plate, the locating plate bottom is equipped with the recess, the structure of recess and the structure cooperation of worm.

One side of the worm wheel assembly is provided with a central spline shaft, one end of the flat gear is sleeved on the central spline shaft, the other end of the flat gear is provided with a potentiometer, and the potentiometer is connected with the box body through a fourth screw.

Compared with the prior art, the utility model, compact structure, the cost is lower, and the transmission precision is high, can keep the good performance for a long time.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the first gear assembly of the present invention.

Fig. 3 is a schematic structural diagram of the second gear transmission assembly of the present invention.

Fig. 4 is a schematic structural diagram of the first gear transmission assembly and the second gear transmission assembly of the present invention when they are engaged.

Fig. 5 is a schematic structural view of the worm of the present invention.

Fig. 6 is a schematic structural view of the positioning plate of the present invention.

Fig. 7 is a schematic structural diagram of the worm gear assembly of the present invention.

Referring to fig. 1 to 7, wherein 1 is a case, 2 is a second half clutch, 3 is a second shaft circlip, 4 is a second half clutch, 5 is a first gear transmission assembly, 6 is a first hole circlip, 7 is a first gear, 8 is a fourth shaft circlip, 9 is a first spline, 10 is a second hole circlip, 11 is a second gear transmission assembly, 12 is a second gear, 13 is a worm, 14 is a needle bearing, 15 is a fifth screw, 16 is a motor, 17 is a first gear shaft, 18 is a first shaft circlip, 19 is a second deep groove ball bearing, 20 is a first shaft spacer, 21 is a first shaft deep groove ball bearing, 22 is a third shaft circlip, 23 is a fourth deep groove ball bearing, 24 is a second shaft spacer, 25 is a third deep groove ball bearing, 26 is a second gear shaft, 27 is a worm gear assembly, 28 is a gear pressing plate, 29 is a second gear pressing plate, 30 is a positioning plate, 31 is a second flat key, 32 is a first screw, 33 is a bearing pressing plate, 34 is a flat thrust bearing, 35 is a self-lubricating bearing, 36 is a potentiometer, 37 is a fourth screw, 38 is a flat gear, 39 is a central spline shaft, 40 is a third screw, 41 is a first tooth portion, 42 is a second tooth portion, 43 is a screw hole, 44 is a groove, 45 is a box cover, and 46 is a sixth screw.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 7, one side of the case body 1 is connected to a case cover 45, one side of the case body 1 is provided with a motor 16, an output shaft of the motor 16 is provided with one end of a first half clutch 4, the other end of the first half clutch 4 is provided with one end of a second half clutch 2 which is engaged with the first half clutch, the other end of the second half clutch 2 is provided with one end of a first gear transmission component 5, the other end of the first gear transmission component 5 is connected with one end of a second gear transmission component 11 through a first gear 7, the other end of the second gear transmission component 11 is connected with one end of a worm 13 through a second gear 12, and the other end of the worm 13 is provided with a worm gear component 27 which is engaged with the worm 13.

The first gear transmission assembly 5 comprises a first gear shaft 17, a first deep groove ball bearing 21, a first bearing spacer 20 and a second deep groove ball bearing 19, wherein the first deep groove ball bearing 21, the first bearing spacer 20 and the second deep groove ball bearing 19 are sleeved on the first gear shaft 17, the other end of the second half clutch 2 is connected with one end of the first gear shaft 17, the other end of the first gear shaft 17 is provided with a first tooth portion 41, one end of the first tooth portion 41 is abutted to one end of the first deep groove ball bearing 21, the other end of the first deep groove ball bearing 21 is provided with one end of the first bearing spacer 20, the other end of the first bearing spacer 20 is provided with the second deep groove ball bearing 19, and a first shaft elastic check ring 18 is arranged between a groove of the second deep groove ball bearing 19 and the first gear shaft 17.

And a second shaft elastic check ring 3 is arranged between the first gear shaft 17 and the second half clutch 2, and a first hole elastic check ring 6 is arranged between the first deep groove ball bearing 21, the second deep groove ball bearing 19 and the box body 1.

The second gear transmission assembly 11 comprises a second gear shaft 26, a third deep groove ball bearing 25, a second bearing spacer 24 and a fourth deep groove ball bearing 23, the third deep groove ball bearing 25, the second bearing spacer 24 and the fourth deep groove ball bearing 23 are sleeved on the second gear shaft 26, the second gear shaft 26 is arranged below the first gear shaft 17, one end of the second gear shaft 26 is provided with a second tooth portion 42, one end of the second tooth portion 42 is abutted to one end of the third deep groove ball bearing 25, the other end of the third deep groove ball bearing 25 is provided with one end of the second bearing spacer 24, the other end of the second bearing spacer 24 is provided with the fourth deep groove ball bearing 23, and a third elastic check ring 22 for shaft is arranged between the fourth deep groove ball bearing 23 and the second gear shaft 26.

And second elastic check rings 10 for holes are arranged between the third deep groove ball bearing 25 and the fourth deep groove ball bearing 23 and the box body 1.

The first gear 7 is sleeved at one end of the second gear shaft 26, the first gear 7 is meshed with the first tooth part 41 of the first gear shaft 17, a first flat key 9 is arranged between the inner side of the first gear 7 and the second gear shaft 26, and a fourth shaft elastic retainer ring 8 is arranged between the outer side of the first gear 7 and the second gear shaft 26.

The needle bearing 14 is sleeved at one end of the worm 13, the self-lubricating bearing 35 and the plane thrust bearing 34 are respectively sleeved at the other end of the worm 13, the bearing pressing plate 33 is arranged at the other end of the plane thrust bearing 34, and the bearing pressing plate 33 and the box body 1 are fastened through the first screw 32.

The second gear 12 is sleeved on the other end of the worm 13, a second flat key 31 is arranged between the inner side of the second gear 12 and the worm 13, one end of a positioning plate 30 is arranged on the outer side of the second gear 12, one end of a gear pressing plate 28 is arranged on the other end of the positioning plate 30, the head of a second screw 29 is arranged on the other end of the gear pressing plate 28, the tail of the second screw 29 penetrates through the gear pressing plate 28 and the positioning plate 30 respectively and is fastened on the second gear 12, and the second gear 12 is meshed with a second tooth part 42 of the second gear shaft 26.

The positioning plate 30 is in a semicircular structure, a screw hole 43 is formed in the positioning plate 30, a groove 44 is formed in the bottom of the positioning plate, and the structure of the groove 44 is matched with that of the worm 13.

One side of the worm wheel component 27 is provided with a central spline shaft 39, one end of the flat gear 38 is sleeved on the central spline shaft 39, the other end of the flat gear 38 is provided with a potentiometer 36, and the potentiometer 36 is connected with the box body 1 through a fourth screw 37.

The utility model discloses during the use, as shown in fig. 2, establish first deep groove ball bearing 21 cover in the first tooth 41 left side of first gear shaft 17, sheathe first bearing spacer 20 in first deep groove ball bearing 21 left side again, establish second deep groove ball bearing 19 at first bearing spacer 20 left side cover after that, pack into first gear shaft 17 and second deep groove ball bearing 19 with circlip 18 for the primary shaft between, assemble into first gear drive subassembly 5. The assembled first gear transmission component 5 is integrally installed in a first bearing hole of the box body 1, after the first gear transmission component 5 is assembled in place, a circlip 6 for the first hole is installed in the first bearing hole of the box body 1 and used for fastening the first gear transmission component 5, the first half clutch 2 is connected with one end of a first gear shaft 17, and the first half clutch 2 and the first gear transmission component 5 are fixed through a circlip 3 for a second shaft.

As shown in fig. 3, the third deep groove ball bearing 24 is fitted around the left side of the second tooth portion 42 of the second gear shaft 26, the second bearing spacer 24 is further fitted around the left side of the third deep groove ball bearing 24, the fourth deep groove ball bearing 23 is further fitted around the left side of the second bearing spacer 24, and the circlip 22 for the third shaft is fitted between the fourth deep groove ball bearing 23 and the second gear shaft 26, so that the second gear transmission assembly 11 is assembled. The assembled second gear transmission assembly 11 is integrally installed in a second bearing hole of the box body 1, and after the second gear transmission assembly is assembled in place, the elastic retainer ring 10 for the second hole is installed in the second bearing hole of the box body 1 and used for fastening the second gear transmission assembly 11 and preventing the second gear transmission assembly 11 from being separated.

As shown in fig. 4, the first gear assembly 5 and the second gear assembly 11 are driven by the first gear 7. The first gear 7 is sleeved on the right side of the second gear shaft 26, a first flat key 9 is arranged between the first gear 7 and the second gear shaft 26, and the first flat key 9 ensures that the first gear 7 and the second gear shaft 26 rotate synchronously. A fourth shaft circlip 8 is provided between the outer side of the first gear 7 and the second gear shaft 26 to fasten the first gear 7. And the first gear 7 is meshed with the first tooth portion 41 of the first gear shaft 17.

As shown in fig. 5, the needle bearing 14 is installed in a third bearing hole below the housing 1, a self-lubricating bearing 35 is installed in an outer side hole of the third bearing hole, after the worm 13 is in place, the worm 13 is installed between the needle bearing 14 and the self-lubricating bearing 35, the planar thrust bearing 34 is installed in the third bearing hole of the housing 1, the bearing pressure plate 33 is covered on the planar thrust bearing 34, and the bearing pressure plate 33 is fastened on the housing 1 through the first screw 32, so that the worm 13 and the planar thrust bearing 34 are ensured not to be disengaged.

As shown in fig. 1, 5 and 6, the second gear transmission assembly 11 and the worm 13 transmit power through the second gear 12. The second gear 12 is sleeved on the right side of the worm 13, and the worm 13 and the second gear 12 synchronously rotate through a second flat key 31. Then, the positioning plate 30 is arranged on the outer side of the second gear, the groove 44 of the positioning plate 30 is matched with the structure of the worm 13, and the positioning plate 30 is arranged on the worm 13. And then the gear pressing plate 28 is sleeved on the worm 13, the gear pressing plate 28 is tightly attached to the positioning plate 30, and the gear pressing plate 28 and the positioning plate 30 penetrate through the second screw 29 and then are fastened on the second gear 12, so that the transmission gear 12 is prevented from being separated from the worm 13. And the second gear 12 meshes with the second toothed portion 42 of the second gear transmission assembly 11.

As shown in FIG. 7, the worm wheel assembly 27 is installed in a worm wheel installation hole of a base of the box body 1, the worm wheel assembly 27 and the box body 1 are fastened through a third screw 40, a central axis of the worm wheel assembly 27 is perpendicular to a central axis of the worm 13, a tooth surface of the worm wheel assembly 27 is meshed with a tooth surface of the worm 13, a flat gear 38 is sleeved on the upper portion of a central spline shaft 39 of the worm wheel assembly 27, a potentiometer 36 is arranged above the flat gear 38, an output shaft tooth part of the potentiometer 36 is meshed with the flat gear 38, and the potentiometer 36 is connected with the box body 1 through a fourth screw 37. When the worm wheel assembly 27 rotates, the central spline shaft 39 which synchronously rotates drives the flat gear 38 to rotate, the flat gear 38 rotates to drive the output shaft of the potentiometer 36 to rotate, and the potentiometer 36 can measure the rotating speed of the worm wheel assembly 27.

When the worm gear structure moves, worm 13 will bear great two-way axial force, and ordinary bearing is difficult to bear, the utility model discloses this problem has been solved at self-lubricating bearing 35 and the plane thrust bearing 34 that worm 13 one end set up. The self-lubricating bearing 35 provides radial location for the worm 13 and the flat thrust bearing 34 serves to withstand axial impact forces in both directions on the worm 13. The impact force in one direction is transmitted to the left side of the plane thrust bearing 34 by the shoulder of the worm 13, and the impact force in the other direction is transmitted to the right side of the plane thrust bearing 34 through the second gear 12. Ordinary retaining ring is difficult to bear the axial impact force here, consequently the utility model discloses a locating plate 30 that intensity is higher, high rigidity guarantees that worm 13 can not warp after receiving the impact force, has prolonged the utility model discloses a life.

The motor 16 is fastened in the box body 1 through a fifth screw 15, and the center of the motor 16 is arranged concentrically with the center of the first gear transmission assembly 5. The first clutch half 4 is engaged with the second clutch half 2.

After the first half clutch 4, the second half clutch 2, the first gear transmission assembly 5, the first gear 7, the second gear transmission assembly 11, the second gear 12, the worm 13 and the worm wheel assembly 27 in the box body 1 are assembled, the box cover 45 is connected with the box body 1 through the sixth screw 46.

The utility model discloses during the use, when motor 16 rotates, first half clutch 4 drives second half clutch 2 and rotates, second half clutch 2 drives first gear drive assembly 5 and rotates, first gear drive assembly 5 drives first gear 7 and rotates, first gear 7 drives second gear drive assembly 11 and rotates, second gear drive assembly 11 drives second gear 12 and rotates, second gear 12 drives worm 13 and rotates, worm 13 drives worm wheel assembly 27 and rotates, worm wheel assembly 27 is to outer output torque, drive the valve operation, it rotates to drive flat gear 38 simultaneously, measure the worm wheel rotational speed by potentiometre 36.

When the assembly type automatic assembling device is used specifically, the first gear transmission assembly 5 and the second gear transmission assembly 11 can be assembled into assemblies respectively and then are assembled into the box body 1, the assembly mode improves the assembly efficiency, and later maintenance is facilitated. After the first gear transmission assembly 5 and the second gear transmission assembly 11 are turned into the box body, the first gear transmission assembly and the second gear transmission assembly are fastened by elastic check rings for standard part holes, and therefore assembly efficiency and universality are further improved.

The utility model discloses transmission structure principle is simple, mainly adopts gear shaft transmission and worm gear transmission, and parts machining is comparatively convenient, arranges rationally. The two-stage gear shaft transmission ensures that the transmission is stable, the worm gear and worm transmission obtains a large transmission ratio, and the assembly is simple. Compact structure, low cost, high transmission precision and long-term excellent performance.

Claims

1. The utility model provides a power take off transmission structure for electric actuator, includes the box, its characterized in that: box lid (45) is connected to box (1) one side, it is equipped with motor (16) to be located box (1) one side, motor (16) output shaft department is equipped with first half clutch (4) one end, first half clutch (4) other end is equipped with engaged with second half clutch (2) one end, second half clutch (2) other end is equipped with first gear drive subassembly (5) one end, first gear drive subassembly (5) other end is connected second gear drive subassembly (11) one end through first gear (7), second gear drive subassembly (11) other end passes through second gear (12) and connects worm (13) one end, the worm (13) other end is equipped with engaged with worm wheel assembly (27).

2. A power output transmission structure for an electric actuator according to claim 1, characterized in that: first gear drive subassembly (5) include first gear shaft (17) and overlap and establish first deep groove ball bearing (21), first bearing spacer (20), second deep groove ball bearing (19) on first gear shaft (17), be located second half clutch (2) other end and connect first gear shaft (17) one end, first gear shaft (17) other end is equipped with first tooth portion (41), first tooth portion (41) one end butt first deep groove ball bearing (21) one end, first deep groove ball bearing (21) other end is equipped with first bearing spacer (20) one end, first bearing spacer (20) other end is equipped with second deep groove ball bearing (19), be equipped with first for the axle circlip (18) between the slot of second deep groove ball bearing (19) and first gear shaft (17).

3. A power output transmission structure for an electric actuator according to claim 2, characterized in that: and an elastic check ring (3) for a second shaft is arranged between the first gear shaft (17) and the second half clutch (2), and an elastic check ring (6) for a first hole is arranged between the first deep groove ball bearing (21), the second deep groove ball bearing (19) and the box body (1).

4. A power output transmission structure for an electric actuator according to claim 1, characterized in that: the second gear transmission assembly (11) comprises a second gear shaft (26) and a third deep groove ball bearing (25), a second bearing spacer (24) and a fourth deep groove ball bearing (23) which are sleeved on the second gear shaft (26), the second gear shaft (26) is arranged below the first gear shaft (17), one end of the second gear shaft (26) is provided with a second tooth part (42), one end of the second tooth part (42) is abutted to one end of the third deep groove ball bearing (25), the other end of the third deep groove ball bearing (25) is provided with one end of the second bearing spacer (24), the other end of the second bearing spacer (24) is provided with the fourth deep groove ball bearing (23), and a third elastic check ring (22) for the shaft is arranged between the fourth deep groove ball bearing (23) and the second gear shaft (26).

5. A power output transmission structure for an electric actuator according to claim 4, wherein: and elastic check rings (10) for second holes are arranged between the third deep groove ball bearing (25), the fourth deep groove ball bearing (23) and the box body (1).

6. A power output transmission structure for an electric actuator according to claim 1, characterized in that: the first gear (7) is sleeved at one end of the second gear shaft (26), the first gear (7) is meshed with the first tooth part (41) of the first gear shaft (17), a first flat key (9) is arranged between the inner side of the first gear (7) and the second gear shaft (26), and an elastic check ring (8) for a fourth shaft is arranged between the outer side of the first gear (7) and the second gear shaft (26).

7. A power output transmission structure for an electric actuator according to claim 1, characterized in that: needle roller bearings (14) are sleeved at one end of the worm (13), self-lubricating bearings (35) and a plane thrust bearing (34) are respectively sleeved at the other end of the worm (13), a bearing pressing plate (33) is arranged at the other end of the plane thrust bearing (34), and the bearing pressing plate (33) is fastened with the box body (1) through first screws (32).

8. A power output transmission structure for an electric actuator according to claim 1, characterized in that: the second gear (12) is sleeved at the other end of the worm (13), a second flat key (31) is arranged between the inner side of the second gear (12) and the worm (13), one end of a positioning plate (30) is arranged at the outer side of the second gear (12), one end of a gear pressing plate (28) is arranged at the other end of the positioning plate (30), the head of a second screw (29) is arranged at the other end of the gear pressing plate (28), the tail of the second screw (29) penetrates through the gear pressing plate (28) and the positioning plate (30) respectively and is fastened on the second gear (12), and the second gear (12) is meshed with a second tooth part (42) of a second gear shaft (26).

9. A power output transmission structure for an electric actuator according to claim 8, wherein: the structure of the positioning plate (30) is of a semicircular structure, a screw hole (43) is formed in the positioning plate (30), a groove (44) is formed in the bottom of the positioning plate, and the structure of the groove (44) is matched with that of the worm (13).

10. A power output transmission structure for an electric actuator according to claim 1, characterized in that: one side of the worm wheel component (27) is provided with a central spline shaft (39), one end of a flat gear (38) is sleeved on the central spline shaft (39), the other end of the flat gear (38) is provided with a potentiometer (36), and the potentiometer (36) is connected with the box body (1) through a fourth screw (37).