CN217003037U

CN217003037U - Speed reducer for eliminating gear backlash

Info

Publication number: CN217003037U
Application number: CN202220823853.5U
Authority: CN
Inventors: 赵帅
Original assignee: TIANJIN XIANGWEI TRANSMISSION Ltd
Current assignee: TIANJIN XIANGWEI TRANSMISSION Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-19
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to the technical field of speed reducers, and provides a speed reducer for eliminating gear backlash, wherein two groups of supporting seats are arranged, the two groups of supporting seats are connected through a connecting rod with a threaded sleeve, sliding grooves are formed in the mutually close sides of the two groups of supporting seats, movable bearing seat assemblies are arranged in the two sliding grooves in a sliding manner, rotating grooves are formed in the mutually close sides of the two movable bearing seat assemblies, a first gear assembly is arranged in the two rotating grooves in a rotating manner, a second rotating groove is formed in the mutually close side of the two supporting seats, a second gear assembly is arranged in the second rotating groove, the second gear assembly and the first gear assembly are matched for use, a movable connecting rod assembly is arranged on one side of the two movable bearing seat assemblies, one side of the movable connecting rod assembly is fixedly connected with a smooth section of a half-threaded rod, and a thread section of the half-threaded rod passes through the connecting rod with the threaded sleeve and is fixedly connected with a rotating hand wheel, the utility model is convenient to adjust and can effectively eliminate the backlash between the gears.

Description

Speed reducer for eliminating gear backlash

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a speed reducer for eliminating gear backlash.

Background

In a feeding system of numerical control equipment, in order to ensure transmission precision, a gap eliminating device is required to be added, the traditional gap eliminating device is a gear which is processed into a gear with certain conicity in the tooth direction, and when the tooth side gap is increased, the gear is axially adjusted to eliminate the gap.

As in application No.: CN202020683209.3 discloses an eliminate decelerator of gear backlash, which comprises a fixed base, the equal fixed mounting in top and the bottom of fixing base has the fixed plate, and the shifting chute has all been seted up to one side that two fixed plates are close to each other, and equal slidable mounting has the removal seat in two shifting chutes, has all seted up spacing hole on two removal seats, and equal slidable mounting has the gag lever post in two spacing holes, and the both ends of gag lever post respectively with one side inner wall fixed connection of corresponding shifting chute, first rotating groove has all been seted up to the one end that two removal seats are close to each other.

However, the backlash eliminating device needs to process the gear with the tooth direction taper, and the gear with the tooth direction taper is difficult to process and has higher cost; in addition, the gap of the speed reducing device needs to be adjusted after the speed reducing device runs for a certain time, the existing adjusting device cannot be used for finely adjusting the gear shaft, and the adjusting step is complex.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that a gap eliminating device needs to process a gear with tooth direction conicity, the gear with tooth direction conicity is difficult to process, and the cost is high; in addition, the speed reducer needs to adjust the clearance after running for a certain time, the existing adjusting device cannot finely adjust the gear shaft, and the adjusting step is complex.

In order to achieve the purpose, the utility model provides the following technical scheme:

a reduction unit for eliminating backlash in gears, comprising: the support seats are provided with two groups, the two groups of support seats are connected through the threaded sleeve connecting rod, sliding grooves are formed in the mutually close sides of the two groups of support seats, the moving bearing seat assemblies are arranged in the two sliding grooves in a sliding mode, the rotating grooves are formed in the mutually close sides of the two moving bearing seat assemblies, the first gear assembly is rotationally arranged in the two rotating grooves, a second rotating groove is formed in the mutually close side of the two support seats, a second gear assembly is rotationally arranged in the second rotating groove, the second gear assembly and the first gear assembly are matched for use, the moving connecting rod assembly is further arranged on one side of the two moving bearing seat assemblies, and one side of the moving connecting rod assembly is fixedly connected with the smooth section of the half-threaded rod, the thread section of the half-thread threaded rod passes through the threaded sleeve connecting rod to be fixedly connected with the rotating hand wheel, the threaded sleeve is arranged on the threaded sleeve connecting rod, and the half-thread threaded rod is connected with the threaded sleeve in a thread-and-thread matching mode.

Preferably, the first gear assembly comprises: the first gear is sleeved on the first rotating column, two ends of the first rotating column are rotatably installed in rotating grooves in the two-side movable bearing seat assemblies, and the first gear is matched with the second gear assembly for use.

Preferably, the second gear assembly includes: the second rotating column is sleeved with the second gear, two ends of the second rotating column are rotatably installed in second rotating grooves on two sides, and the second gear is meshed with the first gear.

Preferably, the mobile bearing block assembly comprises: the guide post is fixedly arranged on the side wall in the sliding groove, one side of the movable bearing seat is connected with the guide post in a sliding mode, the rotating groove is formed in the other side of the movable bearing seat, and the first rotating post is rotatably arranged in the rotating groove of the movable bearing seat.

Preferably, the moving link assembly includes: connecting rod, pole setting, jam plate and bearing, connecting rod, pole setting and jam plate all are provided with two sets ofly, and the one end and the removal bearing housing subassembly of connecting rod are connected, the other end of connecting rod and the one end fixed connection of pole setting, the other end and the jam plate fixed connection of pole setting, and the centre gripping has the bearing between two sets of jam plates, and the bearing is connected with the smooth section interference fit of half thread threaded rod.

The utility model has the advantages that: according to the utility model, the first gear assembly is far away from or close to the second gear assembly under the action of the half-thread threaded rod by using the movable connecting rod assembly, so that the function of adjusting the gear backlash between the second gear and the first gear is achieved, the adjustment steps can be simplified by using the half-thread threaded rod, and a worker can adjust the gear backlash between the second gear and the first gear by adjusting and rotating the hand wheel.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a support base and a threaded sleeve connecting rod of the present invention;

FIG. 2 is a schematic view of the first and second gear assemblies of the present invention;

fig. 3 is a schematic view of the moving link assembly of the present invention.

Description of the reference numerals:

1. a supporting seat; 2. a connecting rod with a threaded sleeve; 3. a first gear assembly; 4. a second gear assembly; 5. moving the bearing block assembly; 6. moving the link assembly; 7. a half-threaded rod; 8. rotating a hand wheel; 21. a threaded sleeve; 31. a first rotating column; 32. a first gear; 41. a second rotating cylinder; 42. a second gear; 51. moving the bearing seat; 52. a guide post; 61. a connecting rod; 62. erecting a rod; 63. a locking plate; 64. and a bearing.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example (b):

a reduction unit for eliminating backlash in gears, comprising: supporting seat 1, threaded sleeve connecting rod 2, first gear assembly 3, second gear assembly 4, removal bearing seat subassembly 5, movable connecting rod subassembly 6, half thread threaded rod 7 and rotation hand wheel 8, supporting seat 1 is provided with two sets ofly, and two sets of supporting seats 1 are connected through threaded sleeve connecting rod 2, and the sliding tray has all been seted up to one side that two sets of supporting seats 1 are close to each other, and equal slip is provided with removal bearing seat subassembly 5 in two sliding trays, and removal bearing seat subassembly 5 can slide in the sliding tray.

The rotating grooves are formed in one side, close to each other, of each of the two moving bearing seat assemblies 5, the first gear assemblies 3 are arranged in the two rotating grooves in a rotating mode, and the first gear assemblies 3 can rotate in the rotating grooves.

A second rotating groove is further formed in one side, close to each other, of the two supporting seats 1, a second gear assembly 4 is arranged in the second rotating groove in a rotating mode, the second gear assembly 4 and the first gear assembly 3 are matched in use, and the second gear assembly 4 can rotate in the second rotating groove.

One side of each of the two movable bearing seat assemblies 5 is also provided with a movable connecting rod assembly 6, one side of each of the movable connecting rod assemblies 6 is fixedly connected with a smooth section of a half-threaded rod 7, the thread section of each half-threaded rod 7 penetrates through the corresponding threaded sleeve connecting rod 2 to be fixedly connected with the corresponding rotating hand wheel 8, each threaded sleeve 2 is provided with a threaded sleeve 21, each half-threaded rod 7 is connected with the corresponding threaded sleeve 21 in a threaded-thread fit manner, a worker can drive each half-threaded rod 7 to rotate by using the corresponding rotating hand wheel 8, the smooth sections of the corresponding half-threaded rods 7 can move left and right under the action of the corresponding threaded sleeves 21, so that the movable connecting rod assemblies 6 are driven to move left and right, each movable connecting rod assembly 6 drives each movable bearing seat assembly 5 to move left and right, each movable bearing seat assembly 5 drives each first gear assembly 3 to move left and right, so that each first gear assembly 3 is close to or far away from each second gear assembly 4, turning the hand wheel 8 serves to fine tune the first gear assembly 3.

The first gear assembly 3 comprises: the first rotating column 31 and the first gear 32, the first gear 32 is sleeved on the first rotating column 31, the first gear 32 can rotate along with the rotation of the first rotating column 31, two ends of the first rotating column 31 are rotatably installed on the rotating groove inner bearings on the two sides of the movable bearing seat assembly 5, the first rotating column 31 can rotate in the rotating groove, and the first gear 32 and the second gear assembly 4 are matched for use.

The second gear assembly 4 includes: the second rotating column 41 and the second gear 42, the second gear 42 is sleeved on the second rotating column 31, the second gear 42 can rotate along with the rotation of the second rotating column 31, two ends of the second rotating column 31 are rotatably installed on bearings in second rotating grooves on two sides, the second rotating column 31 can rotate in the second rotating grooves, and the second gear 42 is meshed with the first gear 32.

The moving bearing block assembly 5 includes: the two ends of the guide post 52 are fixedly arranged on the side wall in the sliding groove, one side of the movable bearing seat 51 is connected with the guide post 52 in a sliding mode, the movable bearing seat 51 can move linearly along the guide post 52, the rotating groove is formed in the other side of the movable bearing seat 51, the two ends of the first rotating column 31 are rotatably arranged in the rotating grooves of the movable bearing seats 51 on the two sides, and the first rotating column 31 can rotate between the two groups of movable bearing seats 51.

The moving link assembly 6 includes: connecting rod 61, pole setting 62, jam plate 63 and bearing 64, connecting rod 61, pole setting 62 and jam plate 63 all are provided with two sets ofly, the one end and the removal bearing frame subassembly 5 fixed connection of connecting rod 61, the other end of connecting rod 61 and the one end fixed connection of pole setting 62, the other end and the jam plate 63 fixed connection of pole setting 62, the centre gripping has bearing 64 between two sets of jam plates 63, bearing 64 is connected with the smooth section interference fit of half-thread threaded rod 7, under the regulation of rotating hand wheel 8, the smooth section of half-thread threaded rod 7 can drive bearing 64 and carry out the side-to-side movement, because two sets of jam plates 63 are with the centre gripping of bearing 64 outer lane, two sets of jam plates 63 can carry out the side-to-side movement along with bearing 64, thereby drive connecting rod 61 and pole setting 62 and carry out the side-to-side movement, thereby drive second gear component 4 and carry out the side-to-side movement.

The working principle of the utility model is as follows: the worker rotates the half-thread threaded rod 7 by adjusting the rotating hand wheel 8, because the half-thread threaded rod 7 is connected with the threaded sleeve 21 through the screw thread, the threaded sleeve 21 is fixed on the connecting rod 2 with the threaded sleeve, so that the half-thread threaded rod 7 can move left and right under the action of the threaded sleeve 21, the smooth section of the half-thread threaded rod 7 drives the bearing 64 to move left and right, under the action of the two groups of locking plates 63, the bearing 64 drives the connecting rod 61 and the upright rod 62 to move left and right, the connecting rod 61 drives the movable bearing seat assembly 5 to move left and right, the movable bearing seat assembly 5 drives the first gear assembly 3 to move left and right, therefore, the gear backlash between the second gear 42 and the first gear 32 can be enlarged or reduced, the utility model has convenient use and reasonable structure, can eliminate the gear backlash by adjusting the clearance between the gears, and is convenient to adjust.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the utility model, and any minor modifications, equivalents and improvements made on the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A reduction unit for eliminating backlash in gears, comprising: the support device comprises support seats (1), a threaded sleeve connecting rod (2), a first gear assembly (3), a second gear assembly (4), moving bearing seat assemblies (5), a moving connecting rod assembly (6), a half-threaded rod (7) and a rotating hand wheel (8), wherein the support seats (1) are provided with two groups, the two groups of support seats (1) are connected through the threaded sleeve connecting rod (2), sliding grooves are formed in the mutually close sides of the two groups of support seats (1), the moving bearing seat assemblies (5) are arranged in the two sliding grooves in a sliding manner, rotating grooves are formed in the mutually close sides of the two moving bearing seat assemblies (5), the first gear assembly (3) is arranged in the two rotating grooves in a rotating manner, a second rotating groove is formed in the mutually close side of the two support seats (1), the second gear assembly (4) is arranged in the second rotating groove in a rotating manner, and the second gear assembly (4) is matched with the first gear assembly (3) for use, two move bearing frame subassemblies (5) one side and still be provided with removal connecting rod subassembly (6), remove connecting rod subassembly (6) one side and smooth section fixed connection of half thread threaded rod (7), the screw thread section of half thread threaded rod (7) passes threaded sleeve connecting rod (2) and rotates hand wheel (8) fixed connection, is provided with thread bush (21) on threaded sleeve connecting rod (2), and half thread threaded rod (7) are connected through the screw thread cooperation with thread bush (21).

2. A reduction unit to eliminate gear backlash according to claim 1, wherein said first gear assembly (3) comprises: the first rotating column (31) and the first gear (32) are sleeved on the first rotating column (31), two ends of the first rotating column (31) are rotatably installed in rotating grooves in the two-side movable bearing seat assemblies (5), and the first gear (32) is matched with the second gear assembly (4) for use.

3. A reduction unit to eliminate gear backlash according to claim 2, wherein said second gear assembly (4) comprises: the second rotates post (41) and second gear (42), second gear (42) suit rotates on post (41) at the second, and the second rotates post (41) both ends and rotates the second of installing in both sides and rotate the inslot, and second gear (42) are connected with first gear (32) meshing.

4. A reduction unit for eliminating gear backlash as claimed in claim 2, wherein said mobile bearing block assembly (5) comprises: the device comprises a movable bearing seat (51) and a guide post (52), wherein two ends of the guide post (52) are fixedly arranged on the side wall in a sliding groove, one side of the movable bearing seat (51) is connected with the guide post (52) in a sliding mode, a rotating groove is formed in the other side of the movable bearing seat (51), and a first rotating column (31) is rotatably arranged in the rotating groove of the movable bearing seat (51).

5. A reduction unit for eliminating gear backlash as claimed in claim 1, wherein said mobile connecting rod assembly (6) comprises: connecting rod (61), pole setting (62), jam plate (63) and bearing (64), connecting rod (61), pole setting (62) and jam plate (63) all are provided with two sets ofly, and the one end and the removal bearing housing subassembly (5) of connecting rod (61) are connected, the other end of connecting rod (61) and the one end fixed connection of pole setting (62), the other end and jam plate (63) fixed connection of pole setting (62), and the centre gripping has bearing (64) between two sets of jam plates (63), and bearing (64) are connected with the smooth section interference fit of half thread threaded rod (7).