CN218953991U

CN218953991U - Gap-adjustable worm gear reducer

Info

Publication number: CN218953991U
Application number: CN202223453909.1U
Authority: CN
Inventors: 张朝辉; 王迪; 蒋敬君
Original assignee: Luoyang Sitelin Intelligent Transmission Technology Co ltd
Current assignee: Luoyang Sitelin Intelligent Transmission Technology Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-02
Anticipated expiration: 2032-12-23

Abstract

The utility model provides an adjustable clearance worm gear speed reducer, includes the casing, sets up worm on the casing and set up on the casing with worm wheel that the worm meshing set up, the through-hole that two levels set up relatively is seted up to the lateral wall of casing, installs left end cover and right-hand member lid through the bolt on the casing, and left end cover and right-hand member lid are equipped with and stretch into in the through-hole, and the external diameter is less than the post protruding of through-hole internal diameter, the rotatable setting of worm is on the post protruding, the bottom of casing is equipped with can adjust the post protruding position in the through-hole after the bolt dismantles for along the adjusting part in worm and worm wheel clearance radially. The worm and gear speed reducer can adjust the gap between the worm and the worm wheel along the radial direction of the worm, and is convenient to adjust and operate and good in adjusting effect.

Description

Gap-adjustable worm gear reducer

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 speed reducer has the functions of reducing speed and increasing torque, and is widely applied to speed and torque conversion equipment. The worm gear reducer drives the worm wheel to rotate by utilizing the worm, and the worm gear can achieve a large transmission ratio, so that a large output torque is obtained. At present, the precision requirements of more and more industries on worm gears are higher and higher, the precision of worm gear speed reducers is usually ensured by processing, after a period of use, the meshing gap between the worm gears is increased, when the precision is lower than the technical requirement, the worm gear is not stable in transmission, abrasion, vibration and noise occur, finally the precision of the worm gears is invalid, the speed reducers are scrapped, and new worm gear speed reducers are required to be purchased again.

At present, the existing speed reducer capable of adjusting the gap between worm wheels and worm wheels is characterized in that the gear thickness of a double-lead worm is gradually increased, after the speed reducer is used for a period of time, the axial position of the double-lead worm is changed by adjusting the heights of washers at two ends of the grinding, so that the gap between worm wheels and worm wheels meets the technical requirements again, however, the adjustment mode is complex, the grinding heights of the washers need to be calculated according to the actual gap value, and the proper gap is ensured. Excessive grinding is easily caused in the grinding process, and excessive axial position change of the worm is easily caused, so that the assembly cannot be performed.

Disclosure of Invention

The utility model aims to provide a gap-adjustable worm gear reducer which can adjust the gap between a worm and a worm wheel along the radial direction of the worm, and has the advantages of convenient adjustment operation and good adjustment effect.

The technical scheme adopted by the utility model for achieving the purpose is as follows:

the utility model provides an adjustable clearance worm gear speed reducer, includes the casing, sets up worm on the casing and set up on the casing with worm wheel that the worm meshing set up, the through-hole that two levels set up relatively is seted up to the lateral wall of casing, installs left end cover and right-hand member lid through the bolt on the casing, and left end cover and right-hand member lid are equipped with and stretch into in the through-hole, and the external diameter is less than the post protruding of through-hole internal diameter, the rotatable setting of worm is on the post protruding, the bottom of casing is equipped with can adjust the post protruding position in the through-hole after the bolt dismantles for along the adjusting part in worm and worm wheel clearance radially.

As a preferable scheme of the utility model, the adjusting assembly comprises an adjusting hole which is arranged at the bottom of the shell along the radial direction of the worm and extends towards the worm wheel, the adjusting hole is communicated with the through hole, and a jackscrew for adjusting the position of the stud boss in the through hole is arranged in the adjusting hole.

As a preferable mode of the utility model, the adjusting component is provided with two adjusting components, one adjusting component is used for adjusting the position of the stud boss of the left end cover in the through hole, and the other adjusting component is used for adjusting the position of the stud boss of the right end cover in the through hole

As a preferable scheme of the utility model, the column bulge is provided with an open accommodating cavity, and a bearing for installing a worm is arranged in the accommodating cavity.

As a preferable mode of the utility model, the bearing is a deep groove ball bearing.

As a preferred embodiment of the present utility model, one end of the worm protrudes from the left cover plate, and the end is provided with a coupling for facilitating connection with the driving unit.

As a preferred embodiment of the present utility model, the driving unit is a servo motor or a hydraulic motor.

The utility model has the beneficial effects that:

according to the worm and gear speed reducer, through improvement on installation of the worm and arrangement of the adjusting component which is convenient for adjusting the gap between the worm and the worm wheel in the radial direction, the gap between the worm and the worm wheel can be adjusted in the radial direction of the worm, and the gap between the worm and the worm wheel can meet the technical precision requirement again, so that the unstable phenomenon of worm and gear transmission can be eliminated, precision loss of the speed reducer is avoided, the adjusting range is wide, the operation is convenient, and the problem that the worm and gear speed reducer cannot be assembled due to traditional axial adjustment can be avoided.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a worm gear reducer with adjustable clearance according to an embodiment;

fig. 2 is a schematic diagram of a front view structure of a worm gear reducer with adjustable clearance according to an embodiment;

fig. 3 is a schematic bottom view of a worm gear reducer with adjustable clearance according to an embodiment.

The marks in the figure: 1. the device comprises a shell, 101, through holes, 2, worm wheels, 3, right end covers, 4, bearings, 5, worms, 6, jackscrews, 7, left end covers, 8, bolts, 9, a coupler, 10, a containing cavity, 11, stud protrusions, 12 and an adjusting hole.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description, wherein, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The utility model provides a specific embodiment of a gap-adjustable worm gear reducer, which comprises the following components:

as shown in fig. 1 to 3, the worm gear reducer of the present embodiment includes a housing 1, a worm wheel 2 and a worm 5, a cavity for installing the worm wheel 2 is provided on the upper portion of the housing 1, the worm 5 is meshed with the worm wheel 2 and provided on the lower portion of the housing 1, in order to achieve radial clearance adjustment between the worm 5 and the worm wheel 2 along the worm wheel 2, through holes 101 are provided on the side wall of the housing 1, the through holes 101 are provided in two, two through holes 101 are horizontally and oppositely provided, that is, two through holes 101 are coaxially provided on the two side walls of the housing 1, a left end cover 7 and a right end cover 3 are provided on the side wall of the housing 1, the left end cover 7 and the right end cover 3 are both fixed on the side wall of the housing 1 through bolts 8, and when the left end cover 7 and the right end cover 3 are fixed, the bolts 8 penetrate the left end cover 7 and the right end cover 3 in parallel to the axis of the through holes 101.

As shown in fig. 1, the left end cover 7 and the right end cover 3 are respectively provided with a stud protrusion 11, the stud protrusions 11 extend into the through holes 101 after the left end cover 7 and the right end cover 3 are installed, the outer diameter of the stud protrusions 11 is smaller than the inner diameter of the through holes 101, namely, after the left end cover 7 and the right end cover 3 are installed, the through holes 101 leave a space in which the stud protrusions 11 can radially move along the through holes 101, the stud protrusions 11 are provided with an open accommodating cavity 10, bearings 4 with adaptive sizes are installed in the accommodating cavity 10, the bearings 4 are used for realizing the rotation installation of the worm 5, in this embodiment, the bearings 4 adopt deep groove ball bearings, and after the assembly, the worm wheel 2 is meshed with the worm 5.

With the continuous work of speed reducer, after using a period, the meshing clearance between worm wheel 2 and worm 5 can increase because of wearing and tearing, the phenomenon of not steady can appear in worm gear worm transmission, in order to make the meshing clearance between worm wheel 2 and worm 5 accord with technical accuracy requirement again, be equipped with adjusting part in the bottom of casing 1, after bolt 8 dismantles, namely left end cover 7 and right end cover 3 lose the fixed spacing back of bolt, adjusting part can adjust the position of stud 11 in through-hole 101, thereby make left end cover 7 and right end cover 3 that are equipped with worm 5 can adjust the clearance of worm 5 and worm wheel 2 along the radial of worm 5, and then make the clearance of worm 5 and worm wheel 2 accord with technical accuracy requirement again, eliminate the not steady phenomenon of worm gear worm transmission.

As shown in fig. 1, the adjusting assembly of the embodiment includes an adjusting hole 12 provided at the bottom of the housing 1, the adjusting hole 12 extends along the radial direction of the worm 5 and toward the worm wheel 1, the adjusting hole 12 penetrates through the bottom wall of the housing 1, that is, the adjusting hole 12 is located at one end of the housing 1 and is provided with a through hole 101, a jackscrew 6 is provided in the adjusting hole 12, and the position of the stud 11 in the through hole 101 can be adjusted in the screwing-in and screwing-out process of the jackscrew 6, so that the purpose of adjusting the gap between the worm 5 and the worm wheel 2 along the radial direction of the worm 5 is achieved, the adjusting range is wide, the operation is convenient, and the worm vibration phenomenon caused by the traditional axial adjustment can be avoided.

As shown in fig. 1, two adjusting components are arranged, namely two through holes 101 are arranged, two corresponding jackscrews 6 are also arranged, the two adjusting components are respectively arranged on two sides of the bottom wall of the shell 1, one adjusting component is used for adjusting the position of a stud 11 of the left end cover 7 in the through hole 101, the other adjusting component is used for adjusting the position of a stud 11 of the right end cover 3 in the through hole 101, when in use, bolts 8 of the left end cover and the right end cover are loosened, the jackscrews 6 are screwed in through adjustment, the worm 5 is pushed towards the direction of the worm wheel 2, the worm 5 can reach a proper clearance position, then the bolts 8 on the left end cover and the right end cover are locked again, the adjustment of the clearance between the worm wheel and the worm wheel can be completed by fixing the left end cover and the right end cover, the structure is simple, the adjusting range is wide, the operation is convenient, and the worm vibration phenomenon caused by axially pressing the worm to adjust the clearance between the worm wheel and the worm can be reduced.

Referring to fig. 1, one end of the worm 5 extends out of the left end cover 7, and a coupling 9 is disposed at an end of the worm (5) extending out of the left end cover 7, the worm 5 is connected to a driving unit (not shown in the drawing) through the coupling 9, and the driving unit used in the present embodiment may be a servo motor or a hydraulic motor.

It should be noted that, the portion Wen Weixiang is a prior art, and the above embodiments are only for illustrating the present utility model, but the present utility model is not limited to the above embodiments, and any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model falls within the protection scope of the present utility model.

Claims

1. The utility model provides an adjustable clearance worm gear reducer, includes casing (1), sets up worm (5) on casing (1) and sets up on casing (1) with worm wheel (2) of worm (5) meshing setting, its characterized in that: two horizontal through holes (101) which are oppositely arranged are formed in the side wall of the shell (1), a left end cover (7) and a right end cover (3) are arranged on the shell (1) through bolts (8), a column protrusion (11) which stretches into the through holes (101) and has the outer diameter smaller than the inner diameter of the through holes (101) is arranged on the left end cover (7) and the right end cover (3), the worm (5) is rotatably arranged on the column protrusion (11), and an adjusting assembly which can adjust the position of the column protrusion (11) in the through holes (101) after the bolts (8) are detached and is used for radially adjusting the gap between the worm (5) and the worm wheel (2) along the worm (5) is arranged at the bottom of the shell (1).

2. The gap-adjustable worm gear reducer according to claim 1, wherein the adjusting assembly comprises an adjusting hole (12) which is radially arranged at the bottom of the shell (1) along the worm (5) and extends towards the worm wheel (2), the adjusting hole (12) is communicated with the through hole (101), and a jackscrew (6) for adjusting the position of the stud boss (11) in the through hole (101) is arranged in the adjusting hole (12).

3. An adjustable gap worm gear reducer as claimed in claim 2, characterized in that the adjusting assembly is provided with two adjusting assemblies, one for adjusting the position of the stud (11) of the left end cover (7) in the through hole (101) and the other for adjusting the position of the stud (11) of the right end cover (3) in the through hole (101).

4. An adjustable gap worm gear reducer as claimed in claim 1, characterized in that the stud (11) is provided with an open receiving chamber (10), and that the receiving chamber (10) is provided with a bearing (4) for mounting the worm (5).

5. An adjustable gap worm gear reducer as claimed in claim 4, characterized in that the bearing (4) is a deep groove ball bearing.

6. An adjustable gap worm gear reducer as claimed in claim 1, characterized in that one end of the worm (5) extends out of the left end cap (7), and the end of the worm (5) extending out of the left end cap (7) is provided with a coupling (9) for facilitating connection with a drive unit.

7. The adjustable gap worm gear reducer of claim 6, wherein the drive unit is a servo motor or a hydraulic motor.