CN220706361U - Improved worm wheel rotary mechanism - Google Patents
Improved worm wheel rotary mechanism Download PDFInfo
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- CN220706361U CN220706361U CN202322549991.6U CN202322549991U CN220706361U CN 220706361 U CN220706361 U CN 220706361U CN 202322549991 U CN202322549991 U CN 202322549991U CN 220706361 U CN220706361 U CN 220706361U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 89
- 210000004907 gland Anatomy 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The application relates to the technical field of electric actuators, and particularly discloses an improved worm wheel rotary mechanism which comprises a shell, a driving motor, a transmission shaft, a gear set, a worm and a full-tooth worm wheel, wherein a transmission cavity for installing the transmission shaft, a gear cavity for installing the gear set and a worm wheel cavity for installing the full-tooth worm wheel and the worm are arranged in the shell; an avoidance groove is formed in one side wall, close to the transmission cavity, of the worm gear cavity, the full-tooth worm gear is arranged in the worm gear cavity, and the full-tooth worm gear extends into the transmission cavity through the avoidance groove; the driving motor is fixed at one end of the shell body in the transmission cavity, and the driving motor transmits power to the gear set, the worm and the full-tooth worm wheel through the transmission shaft. According to the full-tooth worm gear, the driving motor is arranged on the outer side of the shell, the avoiding groove is formed in the cavity wall between the worm gear cavity and the driving cavity, and the full-tooth worm gear can extend into the driving cavity from the worm gear cavity, so that the die does not need to be opened again, and the manufacturing cost can be effectively reduced.
Description
Technical Field
The application relates to the field of electric actuator technology, in particular to an improved worm wheel rotary mechanism.
Background
The electric executing mechanism is a terminal control device of an automatic regulating system, which receives 4-20mA (or 1-5V) analog quantity signals and intermittent joint control signals from a DCS system, a regulator or a computer, outputs torque or force and completes the automatic regulating task. The electric actuator is divided into an angular travel electric actuator and a multi-rotary electric actuator.
The angular travel electric actuator can be used for controlling various valves with 90-degree rotation angles, such as butterfly valves, ball valves, shutter valves, air doors, rotary base valves, baffle valves and the like.
The multi-rotation electric actuator is an electric actuator with output exceeding 360 degrees, and can be used for controlling various gate valves, stop valves, high-temperature and high-pressure valves and temperature-reducing water regulating valves or other regulating valves requiring multi-rotation.
As shown in fig. 1, the angular travel electric actuator is a device for switching a valve in a form of rotating 90 degrees by rotating the rotary force of a motor 04 through a gear set 01, a worm wheel 02, a worm 03 and other mechanisms and finally through an output shaft 05; in order to reduce the size of the actuator, a fan-shaped worm wheel 02 is often adopted to cooperate with the worm 03 to realize transmission, the motor 04 is arranged in the actuator housing 06 at a toothless position of the worm wheel 02 and is parallel to the worm 03 to form a compact and exquisite structure, and the motor 04 does not interfere with the worm wheel 02 in the process of rotating the worm wheel 02.
However, in the actual business process of the enterprise, in order to meet the demands of different customer groups, the product needs to be adjusted based on the existing product.
For the angular travel electric actuator shown in fig. 1, if the rotation angle needs to be increased under the condition that parameters such as output torque are unchanged, especially when the requirement of multiple rotations is to be realized, the number of teeth of the worm wheel needs to be increased, and even the worm wheel needs to be designed into a complete full-tooth worm wheel. In the angular travel electric actuator shown in fig. 1, since the motor occupies the toothless position of the worm wheel, if the worm wheel is designed as a full-tooth worm wheel, the position of the motor needs to be adjusted, and the housing of the actuator needs to be re-opened, so that the production cost of the product is greatly increased.
Disclosure of Invention
When the non-full-tooth worm wheel of the 90-degree angular travel electric actuating mechanism is used for adjusting the full-tooth worm wheel, a new worm wheel rotation mechanism is designed in order to avoid increasing the cost of re-mold opening, and the re-mold opening can be avoided simultaneously under the condition that the non-full-tooth worm wheel of the electric actuating mechanism is used for adjusting the full-tooth worm wheel.
The application provides an improvement formula worm wheel rotation mechanism adopts following technical scheme:
an improved worm wheel rotary mechanism comprises a shell, a driving motor, a transmission shaft, a gear set, a worm and a full-tooth worm wheel, wherein a transmission cavity for installing the transmission shaft, a gear cavity for installing the gear set and a worm wheel cavity for installing the full-tooth worm wheel and the worm are arranged in the shell; an avoidance groove is formed in one side wall, close to the transmission cavity, of the worm gear cavity, the full-tooth worm gear is arranged in the worm gear cavity, and the full-tooth worm gear extends into the transmission cavity through the avoidance groove; the driving motor is fixed at one end of the shell body, which is positioned at the transmission cavity, and transmits power to the gear set, the worm and the full-tooth worm wheel through the transmission shaft.
By adopting the technical scheme, the driving motor is arranged outside the shell, and the avoiding groove is preset on one side wall of the transmission cavity and the worm gear cavity, which is close to each other, so that the space for installing the full-tooth worm gear is arranged in the worm gear cavity, after the full-tooth worm gear is installed, part of the full-tooth worm gear extends into the transmission cavity, and other structures are unchanged; during production, the avoidance groove can be obtained after forming only by additionally arranging a baffle plate at the position corresponding to the avoidance groove on the die to obstruct the position of the original cavity wall, so that the production cost is effectively reduced; the novel shell is characterized in that the novel shell is provided with the avoidance groove, the avoidance groove is formed in the original shell by removing materials, the die is not required to be opened again, the production cost can be effectively reduced, and the novel shell is convenient to produce.
Optionally, the transmission shaft rotate install in the transmission chamber, the transmission shaft be close to driving motor's one end coaxial fixed with the axle sleeve, the key groove has been seted up along length direction on the axle sleeve inside wall, driving motor's pivot is inserted and is located in the axle sleeve and pass through the key connection transmission.
Through adopting above-mentioned technical scheme, set up the axle sleeve in the one end that the transmission shaft is close to driving motor to set up the keyway in the axle sleeve, when the installation, only need insert driving motor's pivot in the axle sleeve through key connection, alright with transmission shaft and driving motor linkage.
Optionally, the device further comprises a supporting seat, the supporting seat is inserted into the transmission cavity, the supporting seat is located at one end, close to the driving motor, of the transmission shaft, and the shaft sleeve penetrates through the supporting seat and is in running fit with the supporting seat.
Through adopting above-mentioned technical scheme, set up the supporting seat, can support the hookup location of the pivot of transmission shaft and driving motor, prevent that the tip of transmission shaft from taking place the swing in the course of the work.
Optionally, the device further comprises a fixing seat, wherein the fixing seat is fixed on the shell and is located at one end of the transmission cavity away from the supporting seat, and the transmission shaft penetrates through the fixing seat and is in running fit with the fixing seat.
Through adopting above-mentioned technical scheme, set up the fixing base, can fix the tip of transmission shaft, improve the stability of assembly.
Optionally, the both ends of transmission shaft are provided with spacing collar protruding and shaft shoulder respectively, spacing collar protruding with the shaft shoulder butt respectively in the supporting seat with on the fixing base.
Through adopting above-mentioned technical scheme, set up spacing ring protruding and shaft shoulder at the both ends of transmission shaft, in the use, can effectively prevent that the transmission shaft from taking place axial float.
Optionally, an input gear meshed with the gear set is disposed at one end of the transmission shaft away from the driving motor.
By adopting the technical scheme, the end part of the transmission shaft is provided with the input gear, so that the power of the transmission shaft is conveniently transmitted to the gear set.
Optionally, tapered roller bearings are installed at two ends of the worm in the shell.
Through adopting above-mentioned technical scheme, at normal operating, the worm can produce great axial force, sets up tapered roller bearing and can offset axial force, improves the life of bearing.
Optionally, a mounting hole is formed in the housing at one end, close to the gear cavity, of the worm, the tapered roller bearing, close to one end of the gear set, of the worm is mounted in the mounting hole, a gland is fixed at the mounting hole on the housing, and the gland abuts against the tapered roller bearing on the same side.
By adopting the technical scheme, the shell is provided with the mounting hole, so that the worm can be conveniently inserted into the mounting hole for mounting; the gland is arranged, so that the end part of the worm can be supported, the tapered roller bearing is positioned, and the tapered roller bearing is prevented from being displaced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the driving motor is arranged on the outer side of the shell, and an avoidance groove is preset on one side wall of the transmission cavity and one side wall of the worm gear cavity, which are close to each other, so that a space for installing the full-tooth worm gear is formed in the worm gear cavity, after the full-tooth worm gear is installed, part of the full-tooth worm gear extends into the transmission cavity, and other structures are unchanged; during production, the avoidance groove can be obtained after forming only by additionally arranging a baffle plate at the position corresponding to the avoidance groove on the die to obstruct the position of the original cavity wall, so that the production cost is effectively reduced; the novel shell is characterized in that the novel shell is provided with the avoidance groove, the avoidance groove is formed in the original shell by removing materials, the die is not required to be opened again, the production cost can be effectively reduced, and the novel shell is convenient to produce.
2. Through set up the axle sleeve in the one end that the transmission shaft is close to driving motor to set up the keyway in the axle sleeve, when the installation, only need insert driving motor's pivot in the axle sleeve through key connection, alright with transmission shaft and driving motor linkage.
3. Through setting up the supporting seat in the position that transmission shaft and driving motor are connected, the supporting seat can support the hookup location of transmission shaft and driving motor's pivot, and in the prevention working process, the tip of transmission shaft takes place the swing, improves the stability of operation.
Drawings
FIG. 1 is a schematic illustration of an angular travel electric actuator in accordance with the background of the present application;
FIG. 2 is a cross-sectional view of a worm gear swing mechanism according to an embodiment of the present application;
FIG. 3 is an enlarged view of area A of FIG. 1;
FIG. 4 is an enlarged view of region B of FIG. 1;
fig. 5 is an enlarged view of region C in fig. 1.
Reference numerals: 01. a gear set; 02. a worm wheel; 03. a worm; 04. a motor; 05. an output shaft; 06. a housing; 1. a housing; 11. a transmission cavity; 12. a gear cavity; 13. a worm gear cavity; 14. an avoidance groove; 15. a support base; 16. a fixing seat; 17. tapered roller bearings; 18. a mounting hole; 19. a gland; 2. a transmission shaft; 21. a shaft sleeve; 211. a key slot; 22. the limiting ring is convex; 23. a shaft shoulder; 24. an input gear; 3. a gear set; 4. a worm; 5. full-tooth worm wheel; 6. a driving motor; 7. an output shaft; 8. a key.
Detailed Description
The present application is described in further detail below in conjunction with figures 2-5.
The embodiment of the application discloses an improved worm wheel rotary mechanism, referring to fig. 1, comprising a shell 1, a driving motor 6, a gear set 3, a worm 4 and a full-tooth worm wheel 5; a transmission cavity 11, a gear cavity 12 and a worm gear cavity 13 are formed in the shell 1, the transmission shaft 2 is rotatably arranged in the transmission cavity 11, the gear set 3 is arranged in the gear cavity 12, and the full-tooth worm wheel 5 and the worm 4 are both arranged in the worm gear cavity 13; the driving motor 6 is fixed at one end, far away from the gear cavity 12, of the transmission cavity 11 outside the shell 1, and the driving motor 6 transmits power to the full-tooth worm wheel 5 through the gear set 3 and the worm 4 by the transmission shaft 2 and outputs the power through the output shaft 7.
The worm gear cavity 13 and the transmission cavity 11 are two adjacent cavities, and the transmission cavity 11 is a cavity for installing a motor in the background art; an avoidance groove 14 is formed in a side cavity wall, close to each other, of the worm gear cavity 13 and the transmission cavity 11 in a penetrating mode, the full-tooth worm gear 5 is installed in the worm gear cavity 13, and a part of the full-tooth worm gear 5 extends into the transmission cavity 11 from the avoidance groove 14.
Referring to fig. 2 and 3, the transmission shaft 2 is rotatably mounted in the transmission chamber 11 through a bearing, and a support seat 15 is mounted at one end of the transmission shaft 2 near the driving motor 6. The supporting seat 15 is of a disc-shaped structure, the supporting seat 15 is coaxially inserted into the transmission cavity 11, and the end part of the transmission shaft 2 is rotationally fixed on the supporting seat 15 through a bearing; a shaft sleeve 21 is coaxially and integrally arranged at one end of the transmission shaft 2 close to the supporting seat 15, the shaft sleeve 21 penetrates through the supporting seat 15 and is in running fit with the supporting seat 15, and a rotating shaft of the driving motor 6 is coaxially inserted into the shaft sleeve 21; a key slot 211 is formed on the inner wall of the shaft sleeve 21 along the length direction, and the rotation shaft of the driving motor 6 and the shaft sleeve 21 synchronously rotate through a key 8; and the rotating shaft of the driving motor 6 is rotatably mounted on the supporting seat 15 through a bearing. In the use, the supporting seat 15 can improve the connection stability of the transmission shaft 2 and the driving motor 6, and prevent the transmission shaft 2 from swinging in the rotation process.
A limiting ring protrusion 22 with the diameter larger than that of the transmission shaft 2 is coaxially and integrally arranged at one end of the transmission shaft 2 close to the supporting seat 15, and the limiting ring protrusion 22 is abutted on the bearing inner ring. The limiting ring protrusion 22 can prevent the transmission shaft 2 from moving to one side of the driving motor 6 in the operation process, and meanwhile, the supporting seat 15 can be positioned to prevent the supporting seat 15 from moving axially.
Referring to fig. 2 and 4, a fixing base 16 is mounted on the housing 1 at an end of the transmission shaft 2 remote from the driving motor 6, and the transmission shaft 2 penetrates the fixing base 16 and is rotatably mounted on the fixing base 16 through a bearing. The shaft shoulder 23 is integrally arranged at one end of the transmission shaft 2 close to the fixed seat 16, and the shaft shoulder 23 is abutted to the bearing, so that the transmission shaft 2 can be prevented from moving to one side of the fixed seat 16. An input gear 24 is processed at one end of the transmission shaft 2 extending out of the fixed seat 16, the input gear 24 is meshed with the gear set 3, and power of the driving motor 6 is transmitted to the gear set 3.
Referring to fig. 2 and 5, tapered roller bearings 17 are mounted on the housing 1 at both ends of the worm 4, and during operation of the worm 4, a large axial force is generated by the worm 4, and the tapered roller bearings 17 can effectively prevent the movement of the worm 4 and improve the service life of the bearings. A mounting hole 18 is formed in the shell 1 in a penetrating manner at one end, close to the gear cavity 12, of the worm 4, and the worm 4 can be inserted into the mounting hole 18 for mounting; the tapered roller bearing 17 of the worm 4, which is close to one end of the gear cavity 12, is coaxially arranged in the mounting hole 18, a gland 19 is fixed on the shell 1 at one end of the mounting hole 18, which is close to the gear cavity 12, and the gland 19 is abutted to the end of the tapered roller bearing 17 to prevent the tapered roller bearing 17 from moving.
The implementation principle of the improved worm wheel rotary mechanism disclosed by the embodiment of the application is as follows: by forming the avoiding groove 14 on one side wall of the worm gear cavity 13 and the transmission cavity 11, which is close to each other, and installing the driving motor 6 outside the shell 1, the shell 1 is provided with a space for installing the full-tooth worm gear 5; when the shell 1 is processed, the baffle isolation material is filled at the position corresponding to the avoidance groove 14 in the die, so that the avoidance groove 14 can be formed on the formed shell 1, the production cost of the shell 1 can be effectively reduced, and the overall production cost is further reduced.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. An improved worm wheel rotary mechanism is characterized in that: the novel worm gear comprises a shell (1), a driving motor (6), a transmission shaft (2), a gear set (3), a worm (4) and a full-tooth worm wheel (5), wherein a transmission cavity (11) for installing the transmission shaft (2), a gear cavity (12) for installing the gear set (3) and a worm wheel cavity (13) for installing the full-tooth worm wheel (5) and the worm (4) are arranged in the shell (1); an avoidance groove (14) is formed in one side wall, close to the transmission cavity (11), of the worm gear cavity (13), the full-tooth worm gear (5) is arranged in the worm gear cavity (13), and the full-tooth worm gear (5) extends into the transmission cavity (11) through the avoidance groove (14); the driving motor (6) is fixed at one end of the shell (1) at the transmission cavity (11), and the driving motor (6) transmits power to the gear set (3), the worm (4) and the full-tooth worm wheel (5) through the transmission shaft (2).
2. An improved worm gear swing mechanism according to claim 1, wherein: the transmission shaft (2) is rotatably arranged in the transmission cavity (11), one end, close to the driving motor (6), of the transmission shaft (2) is coaxially fixed with a shaft sleeve (21), a key groove (211) is formed in the inner side wall of the shaft sleeve (21) along the length direction, and a rotating shaft of the driving motor (6) is inserted in the shaft sleeve (21) and is connected with the transmission through a key (8).
3. An improved worm gear swing mechanism according to claim 2, wherein: still include supporting seat (15), supporting seat (15) are inserted and are located in transmission chamber (11), supporting seat (15) are located transmission shaft (2) are close to driving motor (6) one end, axle sleeve (21) run through supporting seat (15) and with supporting seat (15) normal running fit.
4. An improved worm gear swing mechanism according to claim 3, wherein: the transmission mechanism further comprises a fixing seat (16), wherein the fixing seat (16) is fixed on the shell (1) at one end, far away from the supporting seat (15), of the transmission cavity (11), and the transmission shaft (2) penetrates through the fixing seat (16) and is in running fit with the fixing seat (16).
5. The improved worm-gear swing mechanism according to claim 4, wherein: the two ends of the transmission shaft (2) are respectively provided with a limiting ring boss (22) and a shaft shoulder (23), and the limiting ring boss (22) and the shaft shoulder (23) are respectively abutted to the supporting seat (15) and the fixing seat (16).
6. An improved worm gear swing mechanism according to claim 1, wherein: one end of the transmission shaft (2) far away from the driving motor (6) is provided with an input gear (24) meshed with the gear set (3).
7. An improved worm gear swing mechanism according to claim 1, wherein: tapered roller bearings (17) are mounted in the shell (1) at two ends of the worm (4).
8. The improved worm-gear swing mechanism as claimed in claim 7, wherein: the novel gear is characterized in that a mounting hole (18) is formed in one end, close to the gear cavity (12), of the worm (4), the tapered roller bearing (17) at one end, close to the gear set (3), of the worm (4) is mounted in the mounting hole (18), a gland (19) is fixed to the housing (1) at the mounting hole (18), and the gland (19) abuts against the tapered roller bearing (17) at the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549991.6U CN220706361U (en) | 2023-09-19 | 2023-09-19 | Improved worm wheel rotary mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322549991.6U CN220706361U (en) | 2023-09-19 | 2023-09-19 | Improved worm wheel rotary mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220706361U true CN220706361U (en) | 2024-04-02 |
Family
ID=90436325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322549991.6U Active CN220706361U (en) | 2023-09-19 | 2023-09-19 | Improved worm wheel rotary mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220706361U (en) |
-
2023
- 2023-09-19 CN CN202322549991.6U patent/CN220706361U/en active Active
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