CN209909082U

CN209909082U - Worm gear speed reducer that corner is connected

Info

Publication number: CN209909082U
Application number: CN201920767452.0U
Authority: CN
Inventors: 江建斌; 江建敏; 林旭
Original assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Current assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-01-07
Anticipated expiration: 2029-05-24

Abstract

The utility model provides a worm gear speed reducer machine that corner is connected belongs to mechanical technical field. The worm and gear speed reducer with the connected rotating angles comprises a box body and a worm arranged in the box body, wherein the two ends of the worm are respectively an input end and an output end, a shell is fixed on one side of the box body, an L-shaped cavity is arranged in the shell and consists of a cavity I and a cavity II, the input end extends out of the box body and is positioned in the cavity I, a bevel gear I is fixed on the input end, an input shaft is arranged in the cavity II, a bevel gear II is fixed at the inner end of the input shaft, and the bevel gear II is; the input shaft is sleeved with a first bearing, an inner ring and an outer ring of the first bearing are fixedly connected with the input shaft and the shell respectively, an annular retaining shoulder is integrally formed on the side wall of the input shaft, two end faces of the inner ring of the first bearing are abutted against a second bevel gear and the annular retaining shoulder respectively, and a limiting mechanism enabling the annular retaining shoulder to be pressed on the inner ring of the first bearing all the time is further arranged in the second cavity. The utility model discloses transmission stability is good.

Description

Worm gear speed reducer that corner is connected

Technical Field

The utility model belongs to the technical field of machinery, a worm gear speed reducer, especially a worm gear speed reducer that corner is connected is related to.

Background

A worm gear reducer is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of a motor (motor) to a desired number of revolutions and obtain a large torque.

The existing worm and gear speed reducer generally adopts a linear input mode and a linear output mode. When the input station has a corner, the input station is generally matched with a corner device for use. The existing assembly of a worm gear speed reducer and a corner device is generally that a worm of the speed reducer is connected with an output shaft of the corner device through a coupler, but the length of the connecting mode in the axial direction of the worm is long, so that the stability of the whole transmission is influenced, and the transmission precision is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a worm gear speed reducer that stable in operation and high corner of precision are connected.

The purpose of the utility model can be realized by the following technical proposal: a worm gear speed reducer with connected corners comprises a box body and a worm horizontally arranged in the box body, wherein an input end and an output end are respectively arranged at two ends of the worm; the input shaft is sleeved with a first bearing, an inner ring and an outer ring of the first bearing are fixedly connected with the input shaft and the shell respectively, an annular retaining shoulder is integrally formed on the side wall of the input shaft, two end faces of the inner ring of the first bearing are abutted against a second bevel gear and the annular retaining shoulder respectively, and a limiting mechanism enabling the annular retaining shoulder to be pressed on the inner ring of the first bearing tightly all the time is arranged in the second cavity.

According to the speed reducer, the first bevel gear is directly arranged on the worm, and the first bevel gear, the second bevel gear, the input shaft and other components directly form the corner mechanism for changing the input direction, so that the length of the corner mechanism is effectively reduced, the whole transmission is stable, and the transmission precision is improved.

The limiting mechanism enables the annular blocking shoulder to be pressed on the inner ring of the first bearing all the time, so that the first bearing can support the first bevel gear all the time well, axial movement of the input shaft can be effectively limited, the first bevel gear and the second bevel gear can be meshed accurately all the time, and transmission stability and precision are further improved.

In the worm gear speed reducer that foretell corner is connected, stop gear including all overlapping second bearing and the jump ring outside the input shaft, the second bearing is located the annular and keeps off between shoulder and the jump ring, and the annular keeps off between the shoulder is located first bearing and the second bearing, the inner wall of cavity two on be equipped with and be annular jump ring groove, the jump ring is installed in the jump ring groove, and the inner circle and the outer lane of second bearing keep off shoulder and jump ring counterbalance with the annular respectively. And a second bearing is added, so that the rotational stability of the input shaft can be effectively improved, and the transmission precision is further improved.

As another scheme, in the above worm and gear speed reducer with the corner connection, the limiting mechanism includes a shaft sleeve sleeved outside the input shaft, and an annular blocking shoulder is located between the first bearing and the shaft sleeve, the outer end of the shaft sleeve extends out of the second cavity and is fixedly connected with the housing, and the inner end surface of the shaft sleeve abuts against the annular blocking shoulder.

In the worm gear speed reducer with the connected corners, the opening edge of the first cavity is attached to the outer side wall of the box body to form sealing; the input shaft forms a seal with the inner wall of the cavity II through the framework oil seal, and the clamp spring is located between the framework oil seal and the second bearing. By adopting the design, the cavity is formed into a closed cavity to protect parts such as a bevel gear and the like in the closed cavity from external interference, so that the working stability and the working precision are further improved.

In the worm gear speed reducer that foretell corner is connected, foretell bevel gear two comprises being annular body and locating this external round tooth, and foretell body cover is outside the input shaft, and one of them terminal surface of body sticiss on the inner circle of first bearing, and the other end of body is equipped with bolt and gasket, is equipped with the screw hole on the input shaft, and the pole portion spiro union of bolt is in the screw hole, and the gasket cover is outside the pole portion of bolt, and the both ends face of gasket closely supports with the head of bolt and the terminal surface of the other end of body respectively and leans on. Bolt and gasket cooperation are sticis bevel gear two on first bearing, can come adjusting bolt's the degree of screwing according to bevel gear's thickness like this when in-service use to the bevel gear of adaptation different grade type improves the practicality of this speed reducer.

Compared with the prior art, the worm gear speed reducer connected by the corner has the following advantages:

1. according to the speed reducer, the first bevel gear is directly arranged on the worm, and the first bevel gear, the second bevel gear, the input shaft and other components directly form the corner mechanism for changing the input direction, so that the length of the corner mechanism is effectively reduced, the whole transmission is stable, and the transmission precision is improved.

2. The limiting mechanism enables the annular blocking shoulder to be pressed on the inner ring of the first bearing all the time, so that the first bearing can support the first bevel gear all the time well, axial movement of the input shaft can be effectively limited, the first bevel gear and the second bevel gear can be meshed accurately all the time, and transmission stability and precision are further improved.

3. Bolt and gasket cooperation are sticis bevel gear two on first bearing, can come adjusting bolt's the degree of screwing according to bevel gear's thickness like this when in-service use to the bevel gear of adaptation different grade type improves the practicality of this speed reducer.

Drawings

Fig. 1 is a schematic structural diagram of the worm gear reducer connected at the corner.

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

In the figure, 1, a box body; 2. a worm; 2a, an input end; 2b, an output end; 3. a housing; 3a, a cavity; 3a1, cavity one; 3a2 and a cavity II; 4. a first bevel gear; 5. an input shaft; 5a, an annular retaining shoulder; 6. a second bevel gear; 6a, a body; 6b, teeth; 7. a first bearing; 8. a bolt; 9. a gasket; 10. a second bearing; 11. a clamp spring; 12. and (5) framework oil seal.

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, the worm gear reducer connected by the corner comprises a box body 1 and a worm 2 horizontally arranged in the box body 1. Wherein, the both ends of worm 2 are input 2a and output 2b respectively, and input 2a and output 2b all stretch out to the box 1 outside.

Specifically, as shown in fig. 1 and 2, the housing 3 is fixed to one side of the case 1, and the connection manner between the two may be welding or screw fastening. As shown in fig. 1, an L-shaped cavity 3a is provided in the housing 3, and both ends of the cavity 3a are open. The cavity 3a is composed of a first cavity 3a1 arranged along the axial direction of the worm 2 and a second cavity 3a2 arranged along the radial direction of the worm 2, and the first cavity 3a1 is communicated with the second cavity 3a 2. Cavity one 3a1 is opposite input end 2a, and input end 2a extends into cavity one 3a 1. The input end 2a is fixed with a bevel gear I4, the cavity II 3a2 is internally provided with an input shaft 5 which is coaxially arranged with the cavity II 3a2, and the outer end of the input shaft 5 extends out of the cavity II 3a 2. A second bevel gear 6 is fixed at the inner end of the input shaft 5, and the second bevel gear 6 is meshed with the first bevel gear 4. The input shaft 5 is sleeved with a first bearing 7, and the inner ring and the outer ring of the first bearing 7 are fixedly connected with the input shaft 5 and the shell 3 respectively. An annular retaining shoulder 5a is integrally formed on the side wall of the input shaft 5, and two end faces of the inner ring of the first bearing 7 are respectively abutted against the second bevel gear 6 and the annular retaining shoulder 5 a. And a limiting mechanism which enables the annular retaining shoulder 5a to be always tightly pressed on the inner ring of the first bearing 7 is further arranged in the second cavity 3a 2.

The connection mode of the second bevel gear 6 and the input shaft 5 is as follows: the bevel gear II 6 is composed of a ring-shaped body 6a and a circle of teeth 6b arranged outside the body 6 a. The body 6a is sleeved outside the input shaft 5, and one end face of the body 6a is tightly pressed on the inner ring of the first bearing 7. The other end of the body 6a is provided with a bolt 8 and a gasket 9, the inner end surface of the input shaft 5 is provided with a threaded hole along the axial direction of the input shaft 5, and the rod part of the bolt 8 is screwed in the threaded hole. Gasket 9 cover is outside the pole portion of bolt 8, and the both ends face of gasket 9 closely supports with the terminal surface of the head of bolt 8 and the other end of body 6a respectively and leans on, makes body 6a be fixed a position between gasket 9 and first bearing 7 through pressing from both sides tightly, and sticiss bevel gear two 6 on first bearing 7 through bolt 8 and the cooperation of gasket 9, can adjust bolt 8's the degree of screwing according to bevel gear's thickness like this when the in-service use, with the bevel gear of adaptation different grade type, improve the practicality of this speed reducer.

The limiting mechanism comprises a second bearing 10 and a clamp spring 11 which are sleeved outside the input shaft 5, the second bearing 10 is located between the annular retaining shoulder 5a and the clamp spring 11, and the annular retaining shoulder 5a is located between the first bearing 7 and the second bearing 10. The inner wall of the second cavity 3a2 is provided with an annular clamp spring groove, the clamp spring 11 is arranged in the clamp spring groove, and the inner ring and the outer ring of the second bearing 10 are respectively abutted against the annular retaining shoulder 5a and the clamp spring 11. The second bearing 10 is added, so that the rotation stability of the input shaft 5 can be effectively improved, and the transmission precision is further improved.

Further, the opening edge of the first cavity 3a1 abuts against and forms a seal with the outer side wall of the box body 1. The input shaft 5 forms a seal with the inner wall of the second cavity 3a2 through the framework oil seal 12, and the clamp spring 11 is located between the framework oil seal 12 and the second bearing 10. By adopting the design, the cavity 3a is formed into a closed cavity to protect the parts such as the bevel gear I4 and the like in the closed cavity from external interference, so that the working stability and the working precision are further improved. The framework oil seal 12 is specifically arranged as follows: the framework oil seal 12 is annular and is sleeved outside the input shaft 5, the framework oil seal 12 is fixedly connected with the shell 3, the inner side wall of the framework oil seal 12 is abutted to the side wall of the input shaft 5, and the outer side wall of the framework oil seal 12 is abutted to the inner side wall of the second cavity 3a 2.

Example two

The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the limiting mechanism comprises a shaft sleeve sleeved outside the input shaft 5, an annular blocking shoulder 5a is positioned between the first bearing 7 and the shaft sleeve, the outer end of the shaft sleeve extends out of the second cavity 3a2 and is fixedly connected with the shell 3, and the inner end face of the shaft sleeve abuts against the annular blocking shoulder 5 a.

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 worm gear speed reducer with corner connection comprises a box body (1) and a worm (2) horizontally arranged in the box body (1), wherein an input end (2a) and an output end (2b) are respectively arranged at two ends of the worm (2), and the worm gear speed reducer is characterized in that a shell (3) is fixed at one side of the box body (1), an L-shaped cavity (3a) is arranged in the shell (3), two ends of the cavity (3a) are both opened, the cavity (3a) consists of a first cavity (3a1) axially arranged along the worm (2) and a second cavity (3a2) radially arranged along the worm (2), the first cavity (3a1) is communicated with the second cavity (3a2), the input end (2a) extends out of the box body (1) and is positioned in the first cavity (3a1), a first bevel gear (4) is fixed on the input end (2a), an input shaft (5) coaxially arranged with the second cavity (3a2) is arranged in the second cavity (3a2), the outer end of the input shaft (5) extends out of the second cavity (3a2), a second bevel gear (6) is fixed at the inner end of the input shaft (5), and the second bevel gear (6) is meshed with the first bevel gear (4); the input shaft (5) is sleeved with the first bearing (7), the inner ring and the outer ring of the first bearing (7) are fixedly connected with the input shaft (5) and the shell (3) respectively, the annular retaining shoulder (5a) is integrally formed on the side wall of the input shaft (5), two end faces of the inner ring of the first bearing (7) are abutted to the bevel gear II (6) and the annular retaining shoulder (5a) respectively, and a limiting mechanism enabling the annular retaining shoulder (5a) to be pressed on the inner ring of the first bearing (7) all the time is further arranged in the cavity II (3a 2).

2. The corner-connected worm gear speed reducer according to claim 1, wherein the limiting mechanism comprises a second bearing (10) and a snap spring (11) which are sleeved outside the input shaft (5), the second bearing (10) is located between an annular retaining shoulder (5a) and the snap spring (11), the annular retaining shoulder (5a) is located between the first bearing (7) and the second bearing (10), an annular snap spring groove is formed in the inner wall of the second cavity (3a2), the snap spring (11) is installed in the snap spring groove, and the inner ring and the outer ring of the second bearing (10) are respectively abutted against the annular retaining shoulder (5a) and the snap spring (11).

3. The corner-connected worm and gear speed reducer according to claim 1, wherein the limiting mechanism comprises a shaft sleeve sleeved outside the input shaft (5), the annular blocking shoulder (5a) is located between the first bearing (7) and the shaft sleeve, the outer end of the shaft sleeve extends out of the second cavity (3a2) and is fixedly connected with the shell (3), and the inner end surface of the shaft sleeve abuts against the annular blocking shoulder (5 a).

4. The corner-connected worm and gear speed reducer according to claim 1, wherein the opening edge of the first cavity (3a1) abuts against and forms a seal with the outer side wall of the box body (1); the input shaft (5) forms a seal with the inner wall of the cavity II (3a2) through the framework oil seal (12), and the clamp spring (11) is located between the framework oil seal (12) and the second bearing (10).

5. The corner-connected worm and gear speed reducer according to claim 1, 2, 3 or 4, wherein the bevel gear (6) is composed of an annular body (6a) and a ring of teeth (6b) arranged outside the body (6a), the body (6a) is sleeved outside the input shaft (5), one end face of the body (6a) is tightly pressed on the inner ring of the first bearing (7), the other end of the body (6a) is provided with a bolt (8) and a gasket (9), the input shaft (5) is provided with a threaded hole, the rod part of the bolt (8) is screwed in the threaded hole, the gasket (9) is sleeved outside the rod part of the bolt (8), and two end faces of the gasket (9) are respectively and tightly abutted against the head of the bolt (8) and the end face of the other end of the body (6 a).