CN215059889U

CN215059889U - Concentric positioning assembly of electric actuator

Info

Publication number: CN215059889U
Application number: CN202120171124.1U
Authority: CN
Inventors: 郑瑞建
Original assignee: Zhejiang Dingkong Intelligent Equipment Co ltd
Current assignee: Zhejiang Dingkong Intelligent Equipment Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-12-07
Anticipated expiration: 2031-01-21

Abstract

The utility model relates to an electric actuator's concentric locating component, which comprises an outer shell, the axial one end of shell is equipped with the delivery outlet, be equipped with in this delivery outlet and follow the rotatory output shaft in delivery outlet axle center, the output shaft is including being close to inside linkage end and the output of shell, the linkage end with set up in the vice linkage of the inside turbine worm of shell, it includes the instruction axle to instruct the panel board, the instruction axle passes eccentric shaft and output shaft, the linkage end is installed outward and is held the engaged ring gear with the linkage, ring gear one end extends to in the turbine and forms the location end with the inside counterbalance of turbine, the turbine is equipped with the cooperation end including the cladding of location end in the corresponding position of location end, closely cooperate through a locating component and cooperation end between the location end outside and the cooperation end, the beneficial effects of the utility model are that: the concentricity among the output shaft, the eccentric shaft and the indicating shaft is ensured by arranging the first positioning assembly and the second positioning assembly.

Description

Concentric positioning assembly of electric actuator

Technical Field

The utility model relates to a power take off, concretely relates to concentric locating component of output shaft and indicating shaft of electric actuator.

Background

The electric actuator is a special driving tool for converting electric energy into mechanical energy, the traditional electric actuator mainly comprises a shell, a motor arranged in the shell, a gear set linked with the motor and an output shaft linked with the gear set, the output shaft is a power output end of the electric actuator and can be directly linked with a driven object such as a valve, an instrument mechanism used for displaying states (such as a valve opening angle or a valve opening or closing state) is arranged on the shell, an indicating shaft linked with the output shaft is arranged on the instrument mechanism, the indicating shaft can rotate through the rotation of the output shaft in the using process, and a pointer in the instrument mechanism can be driven to move when the indicating shaft rotates, so that the output torque of the output shaft is displayed.

However, the conventional output shaft is directly and integrally formed with an output gear, and the integrally formed output gear is linked with a gear set, so that the structure has a large defect, the indicating shaft is inserted into the eccentric transmission shaft, and the indicating shaft is connected with the eccentric transmission shaft through a connecting sleeve.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,

provided is a concentric positioning assembly of an electric actuator, which can ensure good concentricity of an output shaft and an instrument indicating shaft.

In order to achieve the above purpose, the utility model provides a following technical scheme: electric actuator's concentric locating component, which comprises a housing, the axial one end of shell is equipped with the delivery outlet, be equipped with in this delivery outlet and follow the rotatory output shaft in delivery outlet axle center, the output shaft is including linkage end and the output that is close to the shell inside, the linkage end with set up in the vice linkage of the inside turbine worm of shell, turbine worm is vice to be included the turbine, set up the eccentric shaft in the turbine and set up in turbine one side and turbine engagement's worm, eccentric shaft one end sets up with the output shaft linkage, install the planetary gear subassembly with turbine engagement outside the eccentric shaft, the panel board is instructed in the installation of the shell other end, instruct the panel board including instructing the axle, instruct the axle to pass the eccentric shaft and be connected with the output shaft, its characterized in that: an inner gear ring meshed with the linkage end is installed outside the linkage end, the inner gear ring is meshed with the linkage end and a planetary gear assembly in the turbine respectively, one end of the inner gear ring extends into the turbine and is abutted against the inside of the turbine to form a positioning end, the turbine is provided with a matching end covering the positioning end at a position corresponding to the positioning end, and the outer side of the positioning end is tightly matched with the matching end through a first positioning assembly capable of enabling the positioning end and the matching end to be in an axial parallel position

By adopting the technical scheme, the traditional driving mode is that the linkage end of the output shaft is directly meshed with the turbine of the turbine worm pair and is driven by the turbine to rotate, but the deviation of the installation position of the output shaft causes the deviation of the installation position of the eccentric shaft, thereby causing the second-level error of the indication position of the indication shaft, the second-level error means that the installation deviation of the output shaft affects the installation position of the eccentric shaft, and the error of the eccentric shaft affects the double deviation caused by the indication position of the indication shaft, the utility model discloses a mounting an inner gear ring at the linkage end, one end of the inner gear ring is meshed with the linkage end, the other end extends into the turbine to be meshed with the planetary gear assembly, and a first positioning assembly arranged at the other end of the inner gear ring relative to the planetary gear assembly is tightly matched with the turbine, the installation position of the inner gear ring is ensured by arranging the first positioning assembly, and then the inner gear ring is respectively meshed with the linkage end and the planetary gear assembly in the turbine, thereby reduce the condition that the concentricity can not obtain the assurance between output shaft and the eccentric shaft that the installation deviation leads to by a wide margin, even there is the deviation also can be in certain extent through first locating component control in the mounted position, the deviation is controllable, and then effectively guarantees the instruction precision of instructing the axle.

The concentric positioning assembly of the electric actuator may further be configured to: the first positioning component comprises a first positioning sleeve arranged at the other end of one end, meshed with the planetary gear assembly, of the inner gear ring and a second positioning sleeve arranged between the turbine and the shell, the inner wall of the first positioning sleeve abuts against the inner gear ring, the outer wall of the first positioning sleeve abuts against the turbine, the inner wall of the second positioning sleeve abuts against the turbine, and the outer wall of the second positioning sleeve abuts against the inner wall of the shell.

Adopt above-mentioned technical scheme, the other end at ring gear and planetary gear set meshing sets up first position sleeve, first position sleeve inner wall offsets with the ring gear, the outer wall offsets with the turbine, second position sleeve between turbine and shell, second position sleeve inner wall offsets with the turbine, the outer wall offsets with the inner wall of shell, so only need guarantee first position sleeve and second position sleeve inner wall and outer wall precision can guarantee the concentricity between output shaft and the eccentric shaft, greatly reduced because the assembly brings the concentricity deviation between output shaft and the eccentric shaft, and require not highly to assembler's experience, indirectly reduce enterprise manufacturing cost.

The concentric positioning assembly of the electric actuator may further be configured to: the other end of the shell, opposite to the output shaft, of the turbine worm pair is provided with a partition plate, and second positioning assemblies are arranged between the eccentric shaft and the partition plate and between the eccentric shaft and the output shaft respectively.

By adopting the technical scheme, the partition plate is arranged at the other end, which is in the shell and is relatively connected with the output shaft, of the turbine worm pair, one end of the eccentric shaft is installed in the partition plate through the second positioning assembly, the other end of the eccentric shaft is also installed in the output shaft through the second positioning assembly, the two second positioning assemblies are located on the same axis, the installation accuracy of the eccentric shaft is ensured, and the installation accuracy of the indicating shaft is further improved.

The concentric positioning assembly of the electric actuator may further be configured to: the second positioning assembly is bearings which are respectively arranged at two ends of the eccentric shaft, the partition plate is provided with a first mounting groove for mounting the bearings, the output shaft is provided with a second mounting groove for mounting the bearings, and the central point of the first mounting groove and the central point of the second mounting groove are positioned on the same axis.

Adopt above-mentioned technical scheme, through setting up the baffle in the shell, pass through the bearing with the one end of eccentric shaft and install on the baffle, the other end passes through the bearing and installs in the output shaft, the central point of first mounting groove and second mounting groove is in same axis, and then the eccentric shaft is installing through the bearing at first, both ends also can guarantee to be in same axis behind the second mounting groove, promoted the concentricity between eccentric shaft and the instruction axle for the instruction axle instructs the precision more accurate.

The concentric positioning assembly of the electric actuator may further be configured to: the bearing is a deep groove ball bearing.

By adopting the technical scheme, the bearing is set into the deep groove ball bearing, so that the production cost can be saved, and the enterprise benefit can be improved.

The concentric positioning assembly of the electric actuator may further be configured to: the first positioning sleeve and the second positioning sleeve are both turbine shaft sleeves.

Adopt above-mentioned technical scheme, all set up first position sleeve and second position sleeve into the turbine axle sleeve, the turbine bearing is not only easily drawn materials and the axle sleeve specification is various, and processing technology is ripe, and the selection face is wide, and the cost is lower.

The utility model has the advantages that: the concentricity among the output shaft, the eccentric shaft and the indicating shaft is ensured by arranging the first positioning assembly and the second positioning assembly.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic top view of an electric actuator according to an embodiment of the present invention.

Fig. 2 is a schematic sectional view of a-a portion of fig. 1.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is a schematic sectional view of a portion B-B of fig. 1.

Detailed Description

Referring to fig. 1-4: a concentric positioning component of an electric actuating device comprises a shell 1, wherein an output hole 11 is formed in one axial end of the shell 1, an output shaft 2 capable of rotating along the axis of the output hole 11 is arranged in the output hole 11, the output shaft 2 comprises a linkage end 21 and an output end 22 which are close to the inside of the shell 1, the linkage end 21 is linked with a turbine worm pair arranged in the shell 1, the turbine worm pair comprises a turbine 31, an eccentric shaft 32 arranged in the turbine 31 and a worm arranged on one side of the turbine 31 and meshed with the turbine, one end of the eccentric shaft 32 is linked with the output shaft 2, a planetary gear component 34 meshed with the turbine 31 is arranged outside the eccentric shaft 32, an indicating instrument panel 5 is arranged at the other end of the shell 1, the indicating instrument panel 5 comprises an indicating shaft 51, the indicating shaft 51 penetrates through the eccentric shaft 32 to be connected with the output shaft 2, and an inner gear ring 211 is respectively meshed with the linkage end 21 and the planetary gear component 34 in the turbine 31, one end of the inner gear 211 extends into the turbine 31 and abuts against the inside of the turbine 31 to form a positioning end 2111, the turbine 31 is provided with a matching end 311 covering the positioning end 2111 at a position corresponding to the positioning end 2111, a first positioning assembly which can cause the positioning end 2111 and the matching end 311 to be in an axially parallel position is tightly matched with the matching end 311 between the outer side of the positioning end 2111 and the matching end 311, the first positioning assembly comprises a first turbine shaft sleeve 212 arranged at the other end of one end, engaged with the planetary gear assembly 34, of the inner gear 211 and a second turbine shaft sleeve 213 arranged between the turbine 31 and the housing 1, the inner wall of the first turbine shaft sleeve 212 abuts against the inner gear 211, the outer wall of the first turbine shaft sleeve 212 abuts against the turbine 31, the inner wall of the second turbine shaft sleeve 213 abuts against the turbine 31, the outer wall of the housing 1 abuts against the inner wall of the housing 1, the housing 1 is provided with a partition plate 4 at the other end, opposite to the output shaft 2, and a partition plate 4 is arranged between the eccentric shaft 32 and the partition plate 4, Second positioning components are respectively arranged between the eccentric shaft 32 and the output shaft 2, the second positioning components are a first deep groove ball bearing 321 and a second deep groove ball bearing 322 which are respectively arranged at two ends of the eccentric shaft 32, a first mounting groove 41 for mounting the first deep groove ball bearing 321 is arranged on the partition plate, a second mounting groove 23 for mounting the second deep groove ball bearing 322 is arranged on the output shaft 2, and the central point of the first mounting groove 41 and the central point of the second mounting groove 23 are positioned on the same axis.

Claims

1. Electric actuator's concentric locating component, which comprises a housing, the axial one end of shell is equipped with the delivery outlet, be equipped with in this delivery outlet and follow the rotatory output shaft in delivery outlet axle center, the output shaft is including linkage end and the output that is close to the shell inside, the linkage end with set up in the vice linkage of the inside turbine worm of shell, turbine worm is vice to be included the turbine, set up the eccentric shaft in the turbine and set up in turbine one side and turbine engagement's worm, eccentric shaft one end sets up with the output shaft linkage, install the planetary gear subassembly with turbine engagement outside the eccentric shaft, the panel board is instructed in the installation of the shell other end, instruct the panel board including instructing the axle, instruct the axle to pass the eccentric shaft and be connected with the output shaft, its characterized in that: an inner gear ring meshed with the linkage end is installed outside the linkage end, the inner gear ring is meshed with the linkage end and a planetary gear assembly in the turbine respectively, one end of the inner gear ring extends into the turbine and abuts against the inside of the turbine to form a positioning end, a matching end covering the positioning end is arranged at the position corresponding to the positioning end of the turbine, and the outer side of the positioning end is tightly matched with the matching end through a first positioning assembly capable of enabling the positioning end and the matching end to be in an axial parallel position.

2. The concentric positioning assembly of an electric actuator of claim 1, wherein: the first positioning component comprises a first positioning sleeve arranged at the other end of one end, meshed with the planetary gear assembly, of the inner gear ring and a second positioning sleeve arranged between the turbine and the shell, the inner wall of the first positioning sleeve abuts against the inner gear ring, the outer wall of the first positioning sleeve abuts against the turbine, the inner wall of the second positioning sleeve abuts against the turbine, and the outer wall of the second positioning sleeve abuts against the inner wall of the shell.

3. The concentric positioning assembly of an electric actuator according to claim 1 or 2, wherein: the other end of the shell, opposite to the output shaft, of the turbine worm pair is provided with a partition plate, and second positioning assemblies are arranged between the eccentric shaft and the partition plate and between the eccentric shaft and the output shaft respectively.

4. The concentric positioning assembly of an electric actuator of claim 3, wherein: the second positioning assembly is bearings which are respectively arranged at two ends of the eccentric shaft, the partition plate is provided with a first mounting groove for mounting the bearings, the output shaft is provided with a second mounting groove for mounting the bearings, and the central point of the first mounting groove and the central point of the second mounting groove are positioned on the same axis.

5. The concentric positioning assembly of an electric actuator according to claim 4, wherein: the bearing is a deep groove ball bearing.

6. The concentric positioning assembly of an electric actuator of claim 2, wherein: the first positioning sleeve and the second positioning sleeve are both turbine shaft sleeves.