CN213744743U

CN213744743U - Double speed ratio adjustable worm gear box

Info

Publication number: CN213744743U
Application number: CN202022667097.5U
Authority: CN
Inventors: 杨建华; 卢立敏; 黄方钦; 周蓓蓓; 黄小秋; 何佳晋; 胡云忠
Original assignee: Wenzhou Yuezhong Mechanical Tech Co ltd
Current assignee: Wenzhou Yuezhong Mechanical Tech Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-20
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a worm gear case with adjustable double speed ratio, include the casing, set up in the worm gear drive of casing and rotate and set up in the input shaft and the transmission output shaft of casing, the transmission output shaft is connected with worm gear drive, be equipped with respectively in the casing and drive transmission output shaft pivoted low torque transmission subassembly and high torque transmission subassembly, be equipped with between input shaft and low torque transmission subassembly and the high torque transmission subassembly and be used for switching over the input shaft and constitute the linkage with low torque transmission subassembly or constitute the switching component of linkage with high torque transmission subassembly. The utility model has the advantages of it is following and effect: the utility model discloses can go to adjust the rotation ratio according to the use operating mode to this maximize of guaranteeing work efficiency, thereby reach better practicality.

Description

Double speed ratio adjustable worm gear box

Technical Field

The utility model relates to a worm gear case technical field, in particular to worm gear case with adjustable double speed ratio.

Background

The worm and worm gear mechanism is usually used for transmitting the motion and power between two staggered shafts, the worm and worm gear are equivalent to a gear and a rack in the middle plane, and the worm is similar to a screw in shape. The worm gear box is used for protecting normal meshing transmission of the worm gear and the worm and preventing the external environment from causing adverse effects on the worm gear and the worm.

Because the rotation ratio of current worm-gear case all is invariable can not adjust, but a lot of special operating mode in the in-service use all need be according to the condition of difference to change the rotation ratio of worm-gear case to this maximize that guarantees work efficiency has just so led to ordinary worm-gear case on the market to be difficult to satisfy these special service behavior, and the limitation is great, do not have fine practicality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a worm gear case with adjustable double speed ratio, this worm gear case can go to adjust the rotational speed ratio according to the service condition to this maximize of guaranteeing work efficiency, thereby reach better practicality.

The above technical purpose of the present invention can be achieved by the following technical solutions: a double-speed-ratio-adjustable worm gear box comprises a shell, a worm gear transmission mechanism arranged on the shell, and an input shaft and a transmission output shaft which are rotatably arranged on the shell, wherein the transmission output shaft is connected with the worm gear transmission mechanism, a low-torque transmission assembly and a high-torque transmission assembly which drive the transmission output shaft to rotate are respectively arranged in the shell, and a switching component for switching the input shaft and the low-torque transmission assembly to form linkage or the input shaft and the high-torque transmission assembly to form linkage is arranged between the input shaft and the low-torque transmission assembly as well as between the input shaft and the high-torque transmission assembly.

Through adopting above-mentioned technical scheme, be used for switching input shaft and low moment of torsion transmission subassembly or constitute the linkage with high moment of torsion transmission subassembly through switching the component according to the demand, when the input shaft constitutes the linkage with low moment of torsion transmission subassembly, the input shaft drives transmission output shaft through low moment of torsion transmission subassembly and realizes rotating, drives worm gear drive mechanism through transmission output shaft and realizes transmission output to change output rotational speed. When the input shaft and the high-torque transmission assembly form linkage, the input shaft drives the transmission output shaft to rotate through the high-torque transmission assembly, and drives the worm gear transmission mechanism to realize transmission output through the transmission output shaft, so that the output rotating speed is changed. Therefore, the output rotating speed of the worm gear box can be adjusted according to different use working conditions, the maximization of the working efficiency is guaranteed, and the practicability is improved.

Further setting the following steps: the switching component comprises a positioning component, a low-torque gear and a high-torque gear, wherein the low-torque gear and the high-torque gear rotate along with the input shaft, the input shaft is arranged in a reciprocating sliding mode along the axis of the input shaft, the low-torque gear and the high-torque gear are arranged in a sliding mode along the input shaft, and the positioning component is used for limiting the input shaft to slide.

Through adopting above-mentioned technical scheme, change the position of low moment of torsion gear and high moment of torsion gear through the mode of sliding, make input shaft and low moment of torsion transmission subassembly or construct the transmission with high moment of torsion transmission subassembly to realize switching between the two, and guarantee transmission structure's stability through locating component.

Further setting the following steps: the high-torque transmission assembly comprises a planet carrier and a plurality of planetary gears, the planet carrier is arranged in the shell in a rotating mode, the plurality of planetary gears are arranged on the planet carrier in a rotating mode, the planet carrier rotates along with the transmission output shaft, and the high-torque gears are meshed with the plurality of planetary gears simultaneously.

Through adopting above-mentioned technical scheme, the input shaft drives high moment of torsion gear rotation, and high moment of torsion gear passes through planetary gear and drives the planet carrier rotation, and the planet carrier in the rotation drives transmission output shaft again and realizes rotating to realize low rotational speed output.

Further setting the following steps: the low-torque transmission assembly comprises a low-torque inner gear rotating along with the planet carrier, and the low-torque gear is meshed with the low-torque inner gear.

Through adopting above-mentioned technical scheme, the input shaft drives low moment of torsion gear revolve, and low moment of torsion gear drives planet carrier synchronous revolution through low moment of torsion internal gear, and the planet carrier in the rotation drives transmission output shaft again and realizes rotating to realize high rotational speed output.

Further setting the following steps: locating component sets up in two holding rings of input shaft, slip along the input shaft axis and sets up in casing and cooperation holding ring and be used for fixing a position the location ball of input shaft and the elastic component of drive location ball towards the holding ring motion, works as when one of them holding ring of location ball cooperation, low moment of torsion internal gear and low moment of torsion gear engagement work as when another holding ring of location ball cooperation, high moment of torsion gear and planetary gear engagement.

Through adopting above-mentioned technical scheme, elastic component drive location ball embedding holding ring realizes axial positioning to the input shaft in moving, and after exerting great drive power to the input shaft, the holding ball moves the holding ring and compresses the elastic component in the effort of drive power back to the holding ring to realize the switching of holding ball between two holding rings.

Further setting the following steps: the worm gear transmission mechanism comprises a worm rotating along with the transmission output shaft, a worm wheel rotatably arranged on the shell and meshed with the worm, and a connection output shaft rotating along with the worm wheel.

By adopting the technical scheme, the transmission output shaft drives the worm to rotate, and the rotating worm is driven by the worm wheel to be connected with the output shaft to rotate, so that power output is realized.

Further setting the following steps: and the shell is provided with an adjusting piece for controlling the elastic piece to move towards the positioning ball.

Through adopting above-mentioned technical scheme, the setting of regulating part is used for adjusting the elasticity of elastic component to the change is to locating component's drive power, guarantees locating component to the stable location of input shaft.

Further setting the following steps: the high-torque transmission assembly comprises a planetary inner gear ring arranged in the shell, and a plurality of planetary gears are meshed with the planetary inner gear ring at the same time.

By adopting the technical scheme, the stability of the planetary gear in rotation is improved by the arrangement of the planetary inner gear ring.

Further setting the following steps: the input shaft, the low-torque gear and the high-torque gear are integrally arranged.

Through adopting above-mentioned technical scheme, promote the structural strength between these three.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses can go to adjust the rotation ratio according to the use operating mode to this maximize of guaranteeing work efficiency, thereby reach better practicality.

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a sectional view of the embodiment;

FIG. 3 is a partial sectional view of the embodiment;

fig. 4 is a partial exploded view of an embodiment.

In the figure: 1. a housing; 2. an input shaft; 3. a transmission output shaft; 4. a high torque gear; 5. a low torque gear; 6. a planet carrier; 7. a planetary gear; 8. a low torque internal gear; 9. a positioning ring; 10. a positioning ball; 11. an elastic member; 12. an adjustment member; 13. a planetary ring gear; 14. connecting an output shaft; 15. a worm; 16. a worm gear.

Detailed Description

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

Referring to fig. 1 to 4, a double-speed-ratio adjustable worm gear box includes a housing 1, a worm gear transmission mechanism disposed in the housing 1, and an input shaft 2 and a transmission output shaft 3 rotatably disposed in the housing 1, the transmission output shaft 3 being connected to the worm gear transmission mechanism, a low-torque transmission assembly and a high-torque transmission assembly driving the transmission output shaft 3 to rotate being disposed in the housing 1, respectively, and a switching member for switching between the input shaft 2 and the low-torque transmission assembly or between the input shaft 2 and the high-torque transmission assembly to form linkage with the low-torque transmission assembly or form linkage with the high-torque transmission assembly.

The worm gear transmission mechanism comprises a worm 15 which is rotatably arranged in the shell 1 and rotates along with the transmission output shaft 3, a worm wheel 16 which is rotatably arranged in the shell 1 and is meshed with the worm 15, and a connection output shaft 14 which rotates along with the worm wheel 16. The worm 15 and the transmission output shaft 3 realize transmission in a key connection mode, and the worm wheel 16 and the connection output shaft 14 are coaxially and integrally arranged.

The switching component comprises a positioning component, a low-torque gear 5 and a high-torque gear 4 which rotate along with the input shaft 2, and the input shaft 2, the low-torque gear 5 and the high-torque gear 4 are coaxially and integrally arranged. The input shaft 2 is arranged in a reciprocating sliding mode along the axis of the input shaft, and the positioning assembly is used for limiting the sliding of the input shaft 2. The high-torque transmission assembly comprises a planet carrier 6 rotatably arranged in the shell 1 and a plurality of planet gears 7 rotatably arranged on the planet carrier 6, the number of the planet gears 7 is preferably three, and the three planet gears 7 are distributed around the circle center of the input shaft 2 in equal proportion. The planet carrier 6 and the transmission output shaft 3 are integrally arranged, the high-torque gear 4 is simultaneously meshed with the three planet gears 7, a planet inner gear ring 13 is fixedly arranged in the shell 1, and the three planet gears 7 are simultaneously meshed with the planet inner gear ring 13.

The low torque transmission assembly comprises a low torque inner gear 8 integrally arranged on the planet carrier 6, gear teeth of the low torque inner gear 8 are spline teeth, and the low torque gear 5 is meshed with the low torque inner gear 8. The positioning assembly comprises two positioning rings 9 arranged on the input shaft 2 along the axis of the input shaft 2, a positioning ball 10 arranged on the shell 1 in a sliding mode and matched with the positioning rings 9 to position the input shaft 2, and an elastic part 11 driving the positioning ball 10 to move towards the positioning rings 9, when the positioning ball 10 is matched with one of the positioning rings 9, the low-torque inner gear 8 is meshed with the low-torque gear 5, and when the positioning ball 10 is matched with the other positioning ring 9, the high-torque gear 4 is meshed with the planetary gear 7. The shell 1 is provided with an adjusting piece 12 for controlling the elastic piece 11 to move towards the positioning ball 10, the adjusting piece 12 is a stud connected with the shell 1 in a threaded manner, and the elastic piece 11 is a spring.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a worm gear case with adjustable double speed ratio, includes casing (1), sets up in the worm gear drive of casing (1) and rotates and set up in input shaft (2) and transmission output shaft (3) of casing (1), transmission output shaft (3) are connected its characterized in that with worm gear drive: the transmission device is characterized in that a low-torque transmission assembly and a high-torque transmission assembly which drive a transmission output shaft (3) to rotate are respectively arranged in the shell (1), and a switching member for switching the input shaft (2) to form linkage with the low-torque transmission assembly or form linkage with the high-torque transmission assembly is arranged between the input shaft (2) and the low-torque transmission assembly as well as between the input shaft and the high-torque transmission assembly.

2. The adjustable double ratio worm gear case as in claim 1 wherein: the switching component comprises a positioning component, a low-torque gear (5) and a high-torque gear (4) which rotate along with the input shaft (2), the input shaft (2) is arranged in a reciprocating sliding mode along the axis of the input shaft, the low-torque gear (5) and the high-torque gear (4) are arranged in a sliding mode along the input shaft (2), and the positioning component is used for limiting the input shaft (2) to slide.

3. The adjustable double ratio worm gear case as in claim 2 wherein: the high-torque transmission assembly comprises a planet carrier (6) arranged in the shell (1) in a rotating mode and a plurality of planetary gears (7) arranged on the planet carrier (6) in a rotating mode, the planet carrier (6) rotates along with the transmission output shaft (3), and the high-torque gears (4) are meshed with the planetary gears (7) simultaneously.

4. The adjustable double ratio worm gear case as in claim 3 wherein: the low-torque transmission assembly comprises a low-torque inner gear (8) rotating along with the planet carrier (6), and the low-torque gear (5) is meshed with the low-torque inner gear (8).

5. The adjustable double ratio worm gear case as in claim 4 wherein: locating component sets up in two holding rings (9) of input shaft (2), slides and sets up in casing (1) and cooperation holding ring (9) and be used for fixing a position ball (10) of input shaft (2) and drive location ball (10) towards elastic component (11) of holding ring (9) motion along input shaft (2) axis arrangement, works as when one of them holding ring (9) of holding ball (10) cooperation, low moment of torsion internal gear (8) and low moment of torsion gear (5) meshing work as when another holding ring (9) of holding ball (10) cooperation, high moment of torsion gear (4) and planetary gear (7) meshing.

6. The adjustable double ratio worm gear case as in claim 1 wherein: the worm gear transmission mechanism comprises a worm (15) rotating along with the transmission output shaft (3), a worm wheel (16) which is rotatably arranged on the shell (1) and meshed with the worm (15), and a connection output shaft (14) rotating along with the worm wheel (16).

7. The adjustable double ratio worm gear case as in claim 1 wherein: the shell (1) is provided with an adjusting piece (12) used for controlling the elastic piece (11) to move towards the positioning ball (10).

8. The adjustable double ratio worm gear case as in claim 3 wherein: the high-torque transmission assembly comprises a planetary inner gear ring (13) arranged in the shell (1), and the planetary gears (7) are meshed with the planetary inner gear ring (13) simultaneously.

9. The adjustable double ratio worm gear case as in claim 1 wherein: the input shaft (2), the low-torque gear (5) and the high-torque gear (4) are integrally arranged.