CN214999261U

CN214999261U - Novel helical gear speed reducer

Info

Publication number: CN214999261U
Application number: CN202121890776.7U
Authority: CN
Inventors: 朱辉兵; 关放柳; 江建斌
Original assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Current assignee: Zhejiang Sankai Mechanical And Electrical Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-12-03
Anticipated expiration: 2031-08-12

Abstract

The utility model provides a novel helical gear speed reducer belongs to mechanical technical field. It has solved the inconvenient problem of current speed reducer installation. The novel helical gear speed reducer comprises a box body, a motor arranged on the rear side of the box body, and an input shaft and an output shaft which are horizontally and rotatably arranged in the box body, wherein the input shaft and the output shaft are connected through a first gear structure; have one section and match with the guide ring lateral wall and paste the arc surface that leans on the through-hole inner wall, the guide ring overcoat has ring shape gasket, and the gasket inside wall pastes with the guide ring lateral wall and leans on, and both ends face sticiss respectively on box trailing flank and front end lid around the gasket. This novel helical gear speed reducer simple to operate.

Description

Novel helical gear speed reducer

Technical Field

The utility model belongs to the technical field of machinery, a helical gear speed reducer, especially a novel helical gear speed reducer are related to.

Background

The speed reducer plays a role in matching rotating speed and transmitting torque between a prime mover and a working machine or an actuating mechanism, is relatively precise machinery, and is used for reducing the rotating speed and increasing the torque.

The existing speed reducer generally comprises a motor and a speed reduction gear box, and a main shaft of the motor is connected with an input shaft of the speed reduction gear box. In order to improve the transmission stability between the motor spindle and the input shaft, the conventional method is to extend the motor spindle into the gear box to be directly connected with the input shaft, so as to reduce the connection length between the spindle and the input shaft, avoid transmission shaking and improve the transmission stability and precision.

However, the above speed reducer has a problem: the gear box and the motor are fixed separately, the position of the motor needs to be adjusted continuously when the gear box and the motor are connected, and the gear box and the motor have more operation steps and are more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a simple to operate's novel helical gear speed reducer.

The purpose of the utility model can be realized by the following technical proposal: a novel helical gear speed reducer comprises a box body, a motor arranged on the rear side of the box body, and an input shaft and an output shaft which are horizontally and rotatably arranged in the box body, wherein the input shaft and the output shaft are connected through a first gear structure; have one section and match with the guide ring lateral wall and paste the arc surface that leans on the through-hole inner wall, the guide ring overcoat has and is the annular gasket of circle, and the gasket inside wall pastes with the guide ring lateral wall and leans on, and both ends face sticiss respectively on box trailing flank and front end lid around the gasket.

The guide ring is matched with the arc surface formed on the inner wall of the through hole to accurately guide the motor installation, and the guide ring is sleeved by the gasket to effectively limit the radial movement of the motor, so that the motor can be moved in place at one time, the installation steps are effectively reduced, and the assembly of the motor spindle and the input shaft is facilitated.

The gasket passes through the tight mode location of clamp between box and motor front end housing, like this through changing the gasket size alright adapt to the guide ring of unidimensional not to match the motor of different grade type, the practicality is higher.

In the novel helical gear speed reducer, the front side surface of the front end cover is pressed on the rear side surface of the box body, the front side surface of the front end cover is provided with the annular groove for accommodating the gasket, the outer side wall of the guide ring forms part of the inner wall of the annular groove, and the rear end surface of the gasket is pressed on the bottom wall of the annular groove. By adopting the design, the length of the assembled front end cover and the box body can be reduced, so that the length of the rotating shaft extending into the box body can be shortened during actual design, and the transmission stability and precision are improved.

In foretell novel helical gear speed reducer, all seted up on box trailing flank and the ring channel diapire and be annular mounting groove, mounting groove and gasket are coaxial, all are equipped with in two mounting grooves and make the gasket respectively with form sealed sealing washer between box and the front end housing. All set up the sealing washer in gasket both sides, can effectively strengthen the sealed effect that forms between box and the front end housing, prevent that impurity such as dust from entering into in the box, improve speed reducer job stabilization nature and life-span.

In the above-mentioned novel helical gear reducer, the second gear includes a pinion gear fixed to the front end of the rotating shaft and a bull gear fixed to the rear end of the input shaft, and the bull gear and the pinion gear are engaged.

In the novel helical gear speed reducer, the middle part of the input shaft is rotatably connected with the box body through a bearing, the large gear is connected with the input shaft through a flat key, and the input shaft is provided with a limiting structure for limiting the axial movement of the large gear.

In foretell novel helical gear speed reducer, limit structure includes bearing inner race and the spacing ring of cover outside the input shaft, and the terminal surface sticiss on the bearing inner race before the gear wheel, can dismantle in the pivot and be fixed with the locating part that makes the spacing ring sticiss on the gear wheel rear end face. The spacing ring presss from both sides tight location between gear wheel and locating part promptly, and when the in-service use, the gasket of accessible change different thickness adapts to the gear wheel of different thickness, makes gear wheel and pinion better cooperation, improves transmission stability and precision.

In foretell novel helical gear speed reducer, set up threaded hole on the input shaft rear end face, the locating part is the bolt of spiro union in the threaded hole, and the bolt head sticiss on the spacing ring, has simple structure, simple to operate's advantage.

As another scheme, in the novel helical gear speed reducer, an annular clamping groove is formed in the side wall of the rear end of the input shaft, the limiting part is a snap spring installed in the clamping groove, and the front end face of the snap spring is tightly pressed on the gasket.

In foretell novel helical gear speed reducer, be equipped with on the box lateral wall along the connecting hole that the output shaft axial runs through the setting, the connecting hole has two, and stretches out the box through two connecting holes respectively at the output shaft both ends, and the output shaft both ends all are connected through bearing and box rotation, and the output shaft both ends all through the oil blanket with correspond to form between the connecting hole and seal, and two bearings all are in between two oil blankets. The box is all stretched out at the output shaft both ends, makes the output shaft both ends all can be used to connect user equipment, satisfies different mounting means, and the practicality is better.

In foretell novel helical gear speed reducer, the output shaft is the cavity form, has seted up the keyway on the inside wall of output shaft, and the keyway both ends extend to output shaft both ends face respectively, the user equipment and output shaft connection of being convenient for.

Compared with the prior art, this novel helical gear speed reducer has following advantage:

1. the guide ring is matched with the arc surface formed on the inner wall of the through hole to accurately guide the motor installation, and the guide ring is sleeved by the gasket to effectively limit the radial movement of the motor, so that the motor can be moved in place at one time, the installation steps are effectively reduced, and the assembly of the motor spindle and the input shaft is facilitated.

2. The gasket passes through the tight mode location of clamp between box and motor front end housing, like this through changing the gasket size alright adapt to the guide ring of unidimensional not to match the motor of different grade type, the practicality is higher.

Drawings

Fig. 1 is a schematic sectional structure diagram of the novel helical gear speed reducer.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Fig. 4 is a schematic sectional structure view of the novel helical gear speed reducer in another direction.

In the figure, 1, a box body; 1a, an arc surface; 2. a motor; 2a, a front end cover; 2a1, guide ring; 2b, a rotating shaft; 3. an input shaft; 4. an output shaft; 4a, a key groove; 5. oil sealing; 6. a drive shaft; 7. a bevel pinion gear; 8. a large bevel gear; 9. a pinion gear; 10. a bull gear; 11. a limiting ring; 12. a limiting member; 13. a gasket; 14. and (5) sealing rings.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 4, the novel helical gear reducer comprises a box 1, a motor 2 arranged at the rear side of the box 1, and an input shaft 3 and an output shaft 4 which are horizontally and rotatably arranged in the box 1.

Wherein the content of the first and second substances,

in an actual product, the input shaft 3 and the output shaft 4 are vertically arranged, and the input shaft 3 and the output shaft 4 are connected through a first gear structure.

The motor 2 includes a front cover 2a having a center hole and a rotating shaft 2b rotatably mounted in the center hole. The rotating shaft 2b is arranged in parallel with the input shaft 3, and in an actual product, the rotating shaft 2b is rotatably connected with the front end cover 2a through a bearing.

The rear side of the box body 1 is provided with a through hole which enables the inner cavity of the box body 1 to be communicated with the outside, the front end of the rotating shaft 2b extends into the box body 1 through the through hole, and the input shaft 3 and the rotating shaft 2b are connected through a second gear structure.

In the present embodiment, it is preferred that,

the output shaft 4 is mounted as follows: the side wall of the box body 1 is provided with two connecting holes which are arranged along the axial direction of the output shaft 4 in a penetrating way, and the two ends of the output shaft 4 respectively extend out of the box body 1 through the two connecting holes. Both ends of the output shaft 4 are rotatably connected with the box body 1 through bearings, both ends of the output shaft 4 are sealed through oil seals 5 and corresponding connecting holes, and the two bearings are located between the two oil seals 5. Further, the output shaft 4 is hollow, the inner side wall of the output shaft 4 is provided with a key groove 4a, and two ends of the key groove 4a respectively extend to two end faces of the output shaft 4, so that two ends of the output shaft 4 can be used for connecting user equipment, different installation modes are met, and the practicability is good.

The first gear structure is as follows: the middle part of the input shaft 3 is rotationally connected with the box body 1 through a bearing; still the level is equipped with transmission shaft 6 in the box 1, and transmission shaft 6 and output shaft 4 set up side by side, and transmission shaft 6 both ends all rotate with box 1 through the bearing and are connected. The first gear structure comprises a small bevel gear 7 fixed on the front end of the input shaft 3 and a large bevel gear 8 fixed on the transmission shaft 6, the large bevel gear 8 is meshed with the small bevel gear 7, a transmission small gear is fixed in the middle of the transmission shaft 6, and a transmission large gear meshed with the transmission small gear is fixed in the middle of the output shaft 4.

As shown in fig. 1 and 3, the second gear structure is as follows: the second gear includes a small gear 9 fixed on the front end of the rotation shaft 2b and a large gear 10 fixed on the rear end of the input shaft 3, and the large gear 10 is engaged with the small gear 9. The connection mode of the gearwheel 10 and the input shaft 3 is as follows: the gearwheel 10 is connected with the input shaft 3 through a flat key, and the input shaft 3 is provided with a limiting structure for limiting the axial movement of the gearwheel 10. In this embodiment, the limiting structure includes a bearing inner ring connected to the input shaft 3 and a limiting ring 11 sleeved outside the input shaft 3, the front end surface of the large gear 10 is tightly pressed on the bearing inner ring, and a limiting part 12 for tightly pressing the limiting ring 11 on the rear end surface of the large gear 10 is detachably fixed on the rotating shaft 2 b. The limiting ring 11 is clamped and positioned between the bull gear 10 and the limiting piece 12, and in actual use, the spacer 13 with different thicknesses can be replaced to adapt to the bull gears 10 with different thicknesses, so that the bull gear 10 and the pinion 9 are better matched, and the transmission stability and precision are improved. The rear end face of the input shaft 3 is provided with a threaded hole, the limiting part 12 is a bolt screwed in the threaded hole, and the head of the bolt is tightly pressed on the limiting ring 11, so that the novel input shaft has the advantages of simple structure and convenience in installation.

As shown in fig. 1 and 2, a circular guide ring 2a1 is integrally formed on the front end cap 2a, and the guide ring 2a1 is coaxial with the rotating shaft 2 b. The guide ring 2a1 is fitted on the rotation shaft 2b and inserted into the through hole. The inner wall of the through hole is provided with a section of arc surface 1a which is matched with and attached to the outer side wall of the guide ring 2a1, the guide ring 2a1 is externally sleeved with a circular gasket 13, the inner side wall of the gasket 13 is attached to the outer side wall of the guide ring 2a1, and the front end surface and the rear end surface of the gasket 13 are respectively pressed on the rear side surface of the box body 1 and the front end cover 2 a. Guide ring 2a1 and the cooperation of the arc surface 1a of shaping on the through-hole inner wall carry out accurate direction to the installation of motor 2 to utilize gasket 13 to entangle guide ring 2a1 and effectively restrict motor 2 radial movement, impel motor 2 once only to remove and target in place, effectively reduce the installation step, make things convenient for motor 2 main shaft and input shaft 3 to assemble.

For a further explanation,

as shown in fig. 1 and 2, the front side surface of the front end cap 2a is pressed against the rear side surface of the case 1, the front side surface of the front end cap 2a is provided with an annular groove for accommodating the gasket 13, the outer side wall of the guide ring 2a1 forms part of the inner wall of the annular groove, and the rear end surface of the gasket 13 is pressed against the bottom wall of the annular groove, so as to reduce the length of the assembled front end cap 2a and the case 1, thus, in the actual design, the length of the rotating shaft 2b extending into the case 1 can be shortened, and the transmission stability and precision can be improved. Annular mounting grooves are formed in the rear side surface of the box body 1 and the bottom wall of the annular groove, the mounting grooves are coaxial with the gasket 13, and sealing rings 14 which enable the gasket 13 to form sealing with the box body 1 and the front end cover 2a are arranged in the two mounting grooves respectively, namely two end surfaces of one sealing ring 14 are pressed on the bottom wall of the corresponding mounting groove and the front end surface of the gasket 13 respectively; two end faces of the other sealing ring 14 are respectively pressed on the bottom wall of the corresponding mounting groove and the rear end face of the gasket 13. All set up sealing washer 14 in gasket 13 both sides, can effectively strengthen the sealed effect that forms between box 1 and the front end housing 2a, prevent that impurity such as dust from entering into box 1 in, improve speed reducer job stabilization nature and life-span.

Example two

The structure and principle of the second embodiment are basically the same as those of the first embodiment, and different points are as follows: the rear end side wall of the input shaft 3 is provided with an annular clamping groove, the limiting part 12 is a clamp spring installed in the clamping groove, and the front end face of the clamp spring is tightly pressed on the gasket 13.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A novel helical gear speed reducer comprises a box body (1), a motor (2) arranged at the rear side of the box body (1), an input shaft (3) and an output shaft (4) which are horizontally and rotatably arranged in the box body (1), wherein the input shaft (3) and the output shaft (4) are connected through a first gear structure, the motor (2) comprises a front end cover (2a) with a center hole and a rotating shaft (2b) rotatably arranged in the center hole, the rear side of the box body (1) is provided with a through hole for the front end of the rotating shaft (2b) to extend into the inner cavity of the box body (1), the rotating shaft (2b) and the input shaft (3) are arranged in parallel and are connected through a second gear structure, the novel electric shock absorber is characterized in that a circular guide ring (2a1) is integrally formed on the front end cover (2a), the guide ring (2a1) and the rotating shaft (2b) are coaxial, and the guide ring (2a1) is sleeved on the rotating shaft (2b) and inserted into the through hole; have one section and lead the circular arc face (1a) that the ring (2a1) lateral wall matches and paste on the through-hole inner wall, lead ring (2a1) overcoat and have and be annular gasket (13), gasket (13) inside wall pastes with lead ring (2a1) lateral wall, and the front and back both ends face of gasket (13) sticiss respectively on box (1) trailing flank and front end cover (2 a).

2. The helical gear reducer according to claim 1, wherein the front side of the front cover (2a) is pressed against the rear side of the housing (1), the front side of the front cover (2a) is formed with an annular groove for receiving the spacer (13), the outer side wall of the guide ring (2a1) forms part of the inner wall of the annular groove, and the rear end surface of the spacer (13) is pressed against the bottom wall of the annular groove.

3. The helical gear reducer according to claim 2, wherein the rear side surface of the casing (1) and the bottom wall of the annular groove are both provided with annular mounting grooves, the mounting grooves are coaxial with the gasket (13), and sealing rings (14) for sealing the gasket (13) with the casing (1) and the front end cover (2a) are respectively arranged in the two mounting grooves.

4. The helical gear reducer according to claim 1, wherein the second gear comprises a pinion gear (9) fixed to a front end of the rotary shaft (2b) and a large gear (10) fixed to a rear end of the input shaft (3), and the large gear (10) is engaged with the pinion gear (9).

5. The novel helical gear reducer according to claim 4, wherein the middle part of the input shaft (3) is rotatably connected with the box body (1) through a bearing, the large gear (10) is connected with the input shaft (3) through a flat key, and the input shaft (3) is provided with a limiting structure for limiting the axial movement of the large gear (10).

6. The helical gear reducer according to claim 5, wherein the limiting structure comprises a bearing inner ring and a limiting ring (11) sleeved outside the input shaft (3), the front end face of the large gear (10) is tightly pressed on the bearing inner ring, and a limiting part (12) which enables the limiting ring (11) to be tightly pressed on the rear end face of the large gear (10) is detachably fixed on the rotating shaft (2 b).

7. The helical gear reducer according to claim 6, wherein the rear end face of the input shaft (3) is provided with a threaded hole, the limiting member (12) is a bolt screwed in the threaded hole, and the head of the bolt is tightly pressed on the limiting ring (11).

8. The helical gear reducer according to claim 6, wherein the rear end side wall of the input shaft (3) is provided with an annular groove, the limiting member (12) is a snap spring installed in the groove, and the front end surface of the snap spring is pressed against the gasket (13).

9. The novel helical gear speed reducer according to claim 1, wherein the side wall of the box body (1) is provided with two connecting holes axially penetrating the output shaft (4), two connecting holes extend out of the box body (1) through the two connecting holes respectively, two ends of the output shaft (4) are rotatably connected with the box body (1) through bearings, two ends of the output shaft (4) are sealed with the corresponding connecting holes through oil seals (5), and the two bearings are located between the two oil seals (5).

10. The helical gear reducer according to claim 9, wherein the output shaft (4) is hollow, a key groove (4a) is formed in an inner side wall of the output shaft (4), and both ends of the key groove (4a) extend to both end surfaces of the output shaft (4), respectively.