CN219045556U

CN219045556U - Worm gear reducer with adjustable gap

Info

Publication number: CN219045556U
Application number: CN202223607428.1U
Authority: CN
Inventors: 许绪强
Original assignee: Hangzhou Dabang Reducer Co ltd
Current assignee: Hangzhou Dabang Reducer Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-19
Anticipated expiration: 2032-12-26

Abstract

The utility model provides a gap-adjustable worm gear reducer, which comprises a shell, wherein a worm gear mounting cavity and a worm mounting cavity are formed in the shell, a worm gear is mounted in the worm gear mounting cavity, a worm is mounted in the worm mounting cavity, the worm is meshed with the worm gear, one end of the worm mounting cavity is provided with a guide hole, a bearing adjusting seat is connected in the guide hole in a sliding manner, a first bearing is arranged on the bearing adjusting seat, and one end of the guide hole is provided with an adjusting mechanism for driving the bearing adjusting seat to move; the other end of the worm installation cavity is provided with a bearing positioning hole in which a second bearing is installed; the two ends of the worm are respectively connected with the first bearing and the second bearing. According to the utility model, the adjusting screw is rotated to enable the adjusting screw to axially move and push the bearing mounting seat, so that the first bearing on the bearing mounting seat is tightly propped against one end of the worm, and therefore, the axial gap between the worm and the first bearing and between the worm and the second bearing is eliminated, and the noise is reduced.

Description

Worm gear reducer with adjustable gap

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a gap-adjustable worm gear speed reducer.

Background

The worm gear speed reducer is a speed reducer commonly used at present. The worm and gear speed reducer realizes transmission through a worm and gear mechanism. The existing worm and gear speed reducer comprises a shell, wherein a worm wheel mounting cavity and a worm mounting cavity are formed in the shell, a worm wheel is mounted in the worm wheel mounting cavity, a worm is mounted in the worm mounting cavity, bearings are arranged at two ends in the worm mounting cavity, and two ends of the worm are connected to the bearings; the worm is meshed with the worm wheel; one end of the worm is an input end, the worm wheel shaft is an output end, torque is input from the input end and drives the worm to rotate, and the worm drives the worm wheel to rotate, so that torque output is realized.

In the existing worm gear speed reducer, the installation positions of two bearings in a worm installation cavity are fixed and cannot be adjusted; in the long-time running process of the worm gear speed reducer, due to factors such as abrasion and the like, a large axial gap is easily generated between the worm and bearings at two ends, so that the worm is easy to axially float, and noise is generated.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a worm gear reducer with adjustable clearance, which can effectively solve the problems.

The utility model aims at realizing the following technical scheme: the utility model provides a worm gear reducer in adjustable clearance, includes the casing, is equipped with worm wheel installation cavity and worm installation cavity in the casing, installs the worm wheel in the worm installation cavity, installs the worm in the worm installation cavity, worm and worm wheel meshing, the one end in worm installation cavity is equipped with the guiding hole, sliding connection has the bearing adjustment seat in the guiding hole, is equipped with first bearing on the bearing adjustment seat, and the one end of guiding hole is equipped with the adjustment mechanism who is used for driving the bearing adjustment seat and removes; the other end of the worm installation cavity is provided with a bearing positioning hole in which a second bearing is installed; the two ends of the worm are respectively connected with the first bearing and the second bearing.

According to the utility model, the bearing adjusting seat can be driven to move in the guide hole through the adjusting mechanism; when a larger gap is generated between the worm and the first bearing and between the worm and the second bearing, the bearing adjusting seat is driven to move through the adjusting mechanism, so that one end of the worm can be propped against the first bearing, the axial gap between the worm and the first bearing and between the worm and the second bearing is eliminated, the worm is prevented from axially moving, and noise is reduced.

Preferably, the adjusting mechanism comprises a threaded hole arranged at one end of the guide hole, an adjusting screw is connected to the threaded hole in a threaded mode, and one end of the adjusting screw is abutted to the bearing mounting seat. During adjustment, the adjusting screw is rotated to enable the adjusting screw to axially move and push the bearing mounting seat, so that the first bearing on the bearing mounting seat is tightly propped against one end of the worm, and the axial clearance between the worm and the first bearing and between the worm and the second bearing is eliminated.

Preferably, a detachable protective cover is connected to the housing, and the protective cover is sleeved over the adjusting screw.

Preferably, the protective cover is made of plastic.

Preferably, the inner wall of the bearing positioning hole is provided with an internal thread, a screw plug is connected in the thread positioning hole, and the screw plug abuts against one side of the second bearing to fix the second bearing in the bearing positioning hole.

Preferably, the bearing mounting seat is provided with a bearing mounting hole for mounting the first bearing.

Preferably, the inner wall of the guide hole is provided with a guide groove, the guide groove is arranged along the axial direction of the guide hole, the side wall of the bearing adjusting seat is provided with a guide boss corresponding to the guide groove, and the guide boss is slidably connected in the guide groove.

Preferably, the shell is provided with a mounting flange, the mounting flange is positioned at one end of the worm mounting cavity, and the mounting flange is provided with a mounting hole.

The beneficial effects of the utility model are as follows: according to the utility model, the bearing adjusting seat can be driven to move in the guide hole through the adjusting mechanism; when a larger gap is generated between the worm and the first bearing and between the worm and the second bearing, the bearing adjusting seat is driven to move through the adjusting mechanism, so that one end of the worm can be propped against the first bearing, the axial gap between the worm and the first bearing and between the worm and the second bearing is eliminated, the worm is prevented from axially moving, and noise is reduced.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view of the structure of the present utility model with the protective cover removed.

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

Fig. 4 is a schematic structural view of the bearing adjustment seat.

In the figure: 1. the worm gear comprises a shell, 2, a worm gear installation cavity, 3, a worm gear installation cavity, 4, a worm gear, 5, a worm, 6, a guide hole, 7, a bearing positioning hole, 8, a bearing adjusting seat, 9, a first bearing, 10, an adjusting screw, 11, a second bearing, 12, a screw plug, 13, an installation hole, 14, a protection cover, 15, a bearing installation hole, 16, a guide groove, 17 and a guide boss.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

As shown in fig. 1-4, a worm gear reducer with adjustable clearance comprises a shell 1, wherein a worm wheel installation cavity 2 and a worm installation cavity 3 are arranged in the shell 1, a worm wheel 4 is arranged in the worm wheel installation cavity 2, a worm 5 is arranged in the worm installation cavity 3, and the worm 5 is meshed with the worm wheel 4.

One end of the worm installation cavity 3 is provided with a guide hole 6, a bearing adjusting seat 8 is slidably connected in the guide hole 6, a first bearing 9 is arranged on the bearing adjusting seat 8, the other end of the worm installation cavity 3 is provided with a bearing positioning hole 7, and a second bearing 11 is arranged in the bearing positioning hole 7. The worm 5 is connected at both ends to a first bearing 9 and a second bearing 11, respectively. The first bearing 9 and the second bearing 11 are both angular contact ball bearings.

The bearing adjusting seat 8 can slide along the guide hole 6. Wherein, be equipped with guide slot 16 on the inner wall of guiding hole 6, guide slot 16 sets up along the axial of guiding hole 6, is equipped with the guide boss 17 corresponding with the guide slot on the side arm of bearing adjustment seat 8, and guide boss 17 sliding connection is in guide slot 16. The bearing mounting seat 8 is provided with a bearing mounting hole 15 for mounting a first bearing, and the first bearing 9 is mounted in the bearing mounting hole 15.

One end of the guide hole 6 is provided with an adjusting mechanism for driving the bearing adjusting seat 8 to move. The adjusting mechanism comprises a threaded hole arranged at one end of the guide hole, an adjusting screw 10 is connected to the threaded hole in a threaded mode, and one end of the adjusting screw 10 is abutted against the bearing mounting seat 8.

An internal thread is arranged on the inner wall of the bearing positioning hole 7, a screw plug 12 is connected in the threaded positioning hole 7, and the screw plug 12 abuts against one side of the second bearing 11 to fix the second bearing 11 in the bearing positioning hole 7.

The shell 1 is connected with a detachable protective cover 14, and the protective cover 14 is sleeved above the adjusting screw 10. The protective cover 14 is made of plastic. When adjustment is required, the protective cover 14 can be removed; after the adjustment is completed, the protective cover 14 is again put on the adjusting screw 10.

The shell is provided with a mounting flange which is positioned at one end of the worm mounting cavity 3, and the mounting flange is provided with a mounting hole 13.

According to the utility model, the bearing adjusting seat can be driven to move in the guide hole through the adjusting mechanism; when a larger gap is generated between the worm and the first bearing and between the worm and the second bearing, the adjusting screw is rotated to enable the adjusting screw to axially move and push the bearing mounting seat, so that the first bearing on the bearing mounting seat is tightly propped against one end of the worm, the axial gap between the worm and the first bearing and between the worm and the second bearing is eliminated, axial movement of the worm is avoided, and noise is reduced.

The present utility model is not limited to the above-described preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model, however, any change in shape or structure of the product is within the scope of the present utility model, and all the products having the same or similar technical solutions as the present application are included.

Claims

1. The worm and gear speed reducer with the adjustable gap comprises a shell, wherein a worm wheel mounting cavity and a worm mounting cavity are formed in the shell, a worm wheel is mounted in the worm wheel mounting cavity, a worm is mounted in the worm mounting cavity, and the worm is meshed with the worm wheel; the other end of the worm installation cavity is provided with a bearing positioning hole in which a second bearing is installed; the two ends of the worm are respectively connected with the first bearing and the second bearing.

2. The gap-adjustable worm gear reducer according to claim 1, wherein the adjusting mechanism comprises a threaded hole arranged at one end of the guide hole, an adjusting screw is connected to the threaded hole in a threaded manner, and one end of the adjusting screw is abutted against the bearing mounting seat.

3. The gap-adjustable worm gear reducer of claim 1, wherein the housing is connected with a detachable protective cover, and the protective cover is sleeved over the adjusting screw.

4. A backlash adjustable worm reducer as set forth in claim 3, characterized in that said protective cover is made of plastic.

5. The gap-adjustable worm gear reducer according to claim 1, wherein the inner wall of the bearing positioning hole is provided with internal threads, a screw plug is connected in the threaded positioning hole, and the screw plug abuts against one side of the second bearing to fix the second bearing in the bearing positioning hole.

6. The gap-adjustable worm gear reducer of claim 2, wherein the bearing mounting base is provided with a bearing mounting hole for mounting the first bearing.

7. The gap-adjustable worm gear reducer according to claim 1, wherein a guide groove is formed in the inner wall of the guide hole, the guide groove is arranged along the axial direction of the guide hole, a guide boss corresponding to the guide groove is arranged on the side wall of the bearing adjusting seat, and the guide boss is slidably connected in the guide groove.

8. The gap-adjustable worm gear reducer according to claim 1, wherein the housing is provided with a mounting flange, the mounting flange is located at one end of the worm mounting cavity, and the mounting flange is provided with a mounting hole.