CN208431353U - A kind of bilateral adjustable-center-distance speed reducer - Google Patents
A kind of bilateral adjustable-center-distance speed reducer Download PDFInfo
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- CN208431353U CN208431353U CN201820555830.4U CN201820555830U CN208431353U CN 208431353 U CN208431353 U CN 208431353U CN 201820555830 U CN201820555830 U CN 201820555830U CN 208431353 U CN208431353 U CN 208431353U
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Abstract
The utility model discloses a kind of bilateral adjustable-center-distance speed reducers, it includes shell, worm component, Worm-gear assembly, and worm component, Worm-gear assembly are connected with shell；Worm component includes worm screw, worm screw connection end bearing block, worm screw fixed end bearing block, tapered roller bearing；Worm-gear assembly includes worm gear, gear shaft, front-end bearing pedestal, rear bearing block, deep groove ball bearing, and front-end bearing pedestal and rear bearing block are separately fixed at the rear and front end of shell upper；Gear shaft shaft part setting inside the shell, its tooth section be located at enclosure, the both ends of gear shaft shaft part are provided with deep groove ball bearing, and worm gear is connected on gear shaft by flat key, and is meshed with worm screw；The worm bearing seat fixation hole that worm screw connects on end bearing block and the fixed end bearing block of worm screw is kidney slot, and i.e. eccentricity is e1 at a distance from kidney slot center at the center of lower half circular hole thereon.The utility model by adjusting worm and gear center away from come the engagement backlash that adjusts worm and gear.
Description
Technical field
The utility model relates to a kind of speed reducers more particularly to a kind of center away from adjustable speed reducer, belong to Novel speed-reducing
The structure of machine designs.
Background technique
Speed reducer is the deceleration mechanism using Worm Wheel System, and due to using Worm Wheel System, speed reducer can have
Effect ground reduces output revolving speed, increases output torque.Therefore such products application is in extensive range, has importantly in engineering machinery
Position.
The worm and gear center of existing speed reducer is away from non-adjustable, and backlash between the two can be in use
The abrasion of worm and gear increases, and causes the transmission of speed reducer unstable, influences the use of speed reducer, and then reduce making for speed reducer
Use the service life.
Summary of the invention
The problem to be solved by the utility model is to provide a kind of bilateral adjustable-center-distance speed reducers, it can pass through tune
The center of whole worm and gear away from, so as to adjust the engagement backlash of worm and gear, keep speed reducer drive steady, guarantee speed reducer
Using effect.Meanwhile the utility model speed reducer reduces the requirement on machining accuracy of correlated parts, has saved cost and time.Separately
Outside, the utility model speed reducer service life is longer.
A kind of bilateral adjustable-center-distance speed reducer of the utility model, it includes shell, worm component, Worm-gear assembly, snail
Bar assembly, Worm-gear assembly are connected with shell；Worm component includes worm screw, worm screw connection end bearing block, the fixed end bearing of worm screw
Seat, tapered roller bearing, the fixed end bearing block of worm screw connect the left and right two that end bearing block is separately fixed at outer casing underpart with worm screw
Side, worm screw are arranged in shell, and both ends are provided with tapered roller bearing；Worm-gear assembly include worm gear, gear shaft, front-end bearing pedestal,
Rear bearing block, deep groove ball bearing, front-end bearing pedestal and rear bearing block are separately fixed at the rear and front end of shell upper；The axis of gear shaft
Section setting inside the shell, its tooth section be located at enclosure, the both ends of gear shaft shaft part are provided with deep groove ball bearing, and worm gear is by putting down
Key connection is meshed on gear shaft, and with worm screw；Worm screw connects the worm shaft on end bearing block and the fixed end bearing block of worm screw
Holding a fixation hole is kidney slot, and i.e. eccentricity is e1 at a distance from kidney slot center at the center of lower half circular hole thereon.
Further, the distribution circle center of several Worm Bearing seat fixation holes on front-end bearing pedestal and rear bearing block is
There are eccentric amount es 2 relative to the center r1 of the bearing hole on front-end bearing pedestal and rear bearing block by r2, r2.
It further, is annular array between several Worm Bearing seat fixation holes, the central point of annular array is r2.
Further, eccentric amount e 1, the value range of e2 are equal are as follows: 0~2mm.
Further, worm screw is arranged in what worm screw connection end bearing block, the fixed end bearing block of worm screw and shell three were formed
In space, is connected in worm screw and be provided with circle between the inner hole of the fixed end bearing block of end bearing block, worm screw and the radial direction at worm screw both ends
Taper roller bearing；Gear shaft shaft part is arranged in the space that front-end bearing pedestal, rear bearing block and shell three are formed, in fore bearing
Seat, the inner hole of rear bearing block and gear shaft shaft part both ends have been arranged radially deep groove ball bearing.
Further, bilateral adjustable-center-distance speed reducer further includes shaft block ring, and shaft block ring covers on gear shaft,
Left end is in contact with the front end face of the deep groove ball bearing of front, and outer circle is in contact with the inner hole of front-end bearing pedestal.
Therefore, the utility model speed reducer both can adjust worm and gear meshed center distance by adjusting worm position, can also
To adjust worm and gear center away from can also adjust by adjusting the position of worm and worm wheel simultaneously by adjusting worm gear position
Whole worm and gear center away from, be finally reached adjustment worm and gear engagement backlash purpose, to guarantee nibbling for worm and gear
Precision is closed, transmission accuracy is improved, keeps speed reducer drive steady, guarantees that the whole of speed reducer uses, prolonged deceleration machine uses the longevity
Life.
The advantages of the utility model speed reducer: 1, worm and worm wheel engagement backlash in worm-gear speed reducer assembly is solved
Adjustment, keeps speed reducer drive steady, guarantees the overall effect of speed reducer；2, when the abrasion of worm and gear teeth portion causes the accuracy of mesh to reach
Meet the multiple utilization of speed reducer by adjusting backlash less than requirement, extend the service life of speed reducer；3,
Reduce the shell of speed reducer, tooth thickness of wormwheel, worm screw transverse tooth thickness requirement on machining accuracy, dimension overproof can recycle, and reduce processing
Difficulty；4, compared to the speed reducer of common adjustable backlash, the double of worm and gear are may be implemented in bilateral adjustable-center-distance speed reducer
To adjusting, increase center away from and backlash adjustable range, further the structure of speed reducer is optimized.
Detailed description of the invention
Fig. 1 is the main view of the utility model bilateral adjustable-center-distance speed reducer；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the schematic diagram of worm bearing seat waist-shaped hole in the utility model；
Fig. 4 is the structural schematic diagram of front-end bearing pedestal；
Fig. 5 is the left view of Fig. 4；
Worm and gear meshed center distance and backlash variation schematic diagram when Fig. 6 is the utility model adjustment worm screw；
Worm and gear meshed center distance and backlash variation schematic diagram when Fig. 7 is the utility model adjustment worm gear.
In Fig. 3: e1 is the center of radius of lower opening and centre distance, that is, eccentricity of kidney slot on worm bearing seat kidney slot；
In Fig. 4: D1 is bearing block fixation hole pitch circle diameter, and D2 is bearing bore dia；In Fig. 5: e2 is bearing block fixation hole and bearing
The eccentricity at hole center.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and detailed description:
In the application: eccentric amount e 1, the value range of e2 are equal are as follows: 0~2mm；The backlash of the worm and wormwheel of speed reducer
Mobility scale be -1.5~+1.5mm；When a is that eccentric amount e 1, e2 are 0, center between worm gear and worm screw is away from i.e. standard
Center away from.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of bilateral adjustable-center-distance speed reducer of the utility model, it includes shell 1, snail
Bar assembly, Worm-gear assembly, worm component, Worm-gear assembly are connected with shell 1；Worm component includes worm screw 7, worm screw connecting pin axis
Seat 5, worm screw fixed end bearing block 8, tapered roller bearing 6 are held, the fixed end bearing block 8 of worm screw connects end bearing block 5 with worm screw and divides
It is not fixed on the left and right sides of 1 lower part of shell, worm screw 7 is arranged in shell 1, and both ends are provided with tapered roller bearing 6；Worm gear
Part includes worm gear 11, gear shaft 4, front-end bearing pedestal 12, rear bearing block 2, deep groove ball bearing 3, and front-end bearing pedestal 12 and rear bearing block 2 divide
It is not fixed on the rear and front end on 1 top of shell；The shaft part of gear shaft 4 is arranged in shell 1, its tooth section is located at 1 outside of shell, tooth
The both ends of 4 shaft part of wheel shaft are provided with deep groove ball bearing 3, and worm gear 11 is connected on gear shaft 4 by flat key 10, and with 7 phase of worm screw
Engagement；The worm bearing seat fixation hole 13 that worm screw connects on end bearing block 5 and the fixed end bearing block 8 of worm screw is kidney slot,
I.e. eccentricity is e1 at a distance from kidney slot center at the center of upper and lower semicircle orifice.
The utility model speed reducer is provided with the fixed end bearing block 8 of individual worm screw at left and right sides of 1 lower part of shell, worm screw connects
End bearing block 5 is connect, and the worm bearing seat fixation hole 13 in the two is set as kidney slot；Up and down adjustment worm screw fixes end bearing block
8, the position of worm screw connection end bearing block 5, can drive tapered roller bearing 6, worm screw 7 to move up and down, move up and down it is maximum away from
From for e1, thus realize the center of worm and gear away from being adjusted within the scope of a-e1 to a+e1, as shown in Figure 6.
Embodiment 2
From Fig. 4, Fig. 5 it is found that the utility model bilateral adjustable-center-distance speed reducer, front-end bearing pedestal 12 and rear bearing block 2
On several Worm Bearing seat fixation holes 14 distribution circle center be r2, r2 is relative on front-end bearing pedestal 12 and rear bearing block 2
The center r1 of bearing hole 15 there are eccentric amount es 2.
It is annular array, annular between several Worm Bearing seat fixation holes 14 as a kind of improved procedure of the utility model
The central point of array is r2.
D1 in Fig. 5 is bearing block fixation hole pitch circle diameter, and D2 is bearing bore dia, and e2 is bearing block fixation hole and axis
The eccentricity at bearing bore center, a be worm and gear center away from.
The distribution circle center of Worm Bearing seat fixation hole 14 in the utility model speed reducer is r2 relative in bearing hole 15
There are eccentric amount es 2 by heart r1；The position of Worm Bearing seat 12, rear worm wheel bearing block 2 before up and down adjustment, can drive deep groove ball bearing
3, worm gear 11 moves up and down, and the maximum distance moved up and down is e2, to realize the center of worm and gear away from a-e2 to a+e2
It is adjusted in range, as shown in Figure 7.
As shown in Fig. 4, Fig. 5, Fig. 7, in speed reducer assembly, need to carry out the fixation hole on front and back bearings seat unified volume
Labelled notation.When being in upper and lower position with No. III hole for No. VII, speed reducer backlash is standard value；When No. V hole is in upper
Side, when No. I hole is below, speed reducer backlash is minimum value；When No. I hole is in top, and No. V hole is below, subtract
Fast machine backlash is maximum value.When speed reducer backlash is too small, by the way that No. VII hole is rotated clockwise downward, to increase
Big backlash, when speed reducer backlash is excessive, by lowering No. VII hole counterclockwise, to reduce backlash.It adjusts
During whole, front and back bearings seat fixing screws all need to unclamp, and front and back bearings seat needs while adjusting identical angle."
From embodiment 1 and embodiment 2 as can be seen that the utility model bilateral adjustable-center-distance speed reducer is reached by two ways
To adjustment worm and gear center away from purpose:
(1), mounting hole fixed with shell on worm screw bearings at both ends seat is processed into kidney-shaped by original round hole
Hole allows worm screw bearings at both ends seat to carry out small range movement up and down, moving distance e1, to pass through by kidney slot
Adjust worm screw position with achieve the purpose that adjust worm and gear center away from.In the case where only adjusting worm screw, speed reducer center
Adjusting range away from a is a+e1 to a-e1.And in existing speed reducer, the tapered roller bearing at worm screw both ends is mounted on speed reducer
In bearing hole on shell, the fixation of the position of bearing hole be cannot be adjusted, so its worm and gear center is away from for fixed value.(2),
Bias will be changed to by original coaxial design between mounting hole and its bearing hole fixed with shell on the bearing block at worm gear both ends
Design, eccentricity e2, thus by adjusting the position of worm gear with achieve the purpose that adjustment worm and gear center away from.Only adjusting
In the case where whole worm gear, adjusting range of the speed reducer center away from a is a+e2 to a-e2.And in existing speed reducer, worm gear passes through
It is keyed on gear shaft, there are two deep groove ball bearing, deep groove ball bearing and gear shafts and bearing block to cooperate for worm gear both ends dress, axis
Hold coaxial between the mounting hole of seat and its bearing hole, bearing block is fixed on shell using screw, and position fixation cannot be adjusted,
So worm and gear center is away from for fixed value.(3), the combination of (one) and (two) mode.In conclusion subtracting relative to existing
Fast machine, the center of the utility model bilateral adjustable-center-distance speed reducer is away from may be implemented within the scope of a-e1-e2 to a+e1+e2
It adjusts.
Therefore, the utility model speed reducer both can adjust worm and gear meshed center distance by adjusting worm position, can also
To adjust worm and gear center away from can also adjust by adjusting the position of worm and worm wheel simultaneously by adjusting worm gear position
Whole worm and gear center away from, be finally reached adjustment worm and gear engagement backlash purpose, to guarantee nibbling for worm and gear
Precision is closed, transmission accuracy is improved, keeps speed reducer drive steady, guarantees that the whole of speed reducer uses, prolonged deceleration machine uses the longevity
Life.
Embodiment 3
In the utility model is adjustable backlash formula speed reducer, it is solid that the setting of worm screw 7 in worm screw connects end bearing block 5, worm screw
In the space that fixed end bearing block 8 and 1 three of shell are formed, connected in the fixed end bearing block 8 of end bearing block 5, worm screw in worm screw
Tapered roller bearing 6 is provided between the radial direction at 7 both ends of hole and worm screw；4 shaft part of gear shaft is arranged in front-end bearing pedestal 12, rear bearing
In the space that seat 2 and 1 three of shell are formed, in front-end bearing pedestal 12, the diameter of the inner hole of rear bearing block 2 and 4 shaft part both ends of gear shaft
To being provided with deep groove ball bearing 3.
Embodiment 4
The utility model bilateral adjustable-center-distance speed reducer further includes shaft block ring 9, and 9 sets of shaft block ring in gear shaft 4
On, left end is in contact with the front end face of the deep groove ball bearing 3 of front, and outer circle is in contact with the inner hole of front-end bearing pedestal 12.
The kidney slot of worm bearing seat fixation hole in the utility model is processed by the way of milling, according to original round hole
The processing of kidney slot can be completed in processing method, the distance for moving eccentric amount e 1 respectively up and down.Process front and back bearings seat when, first plus
Work bearing hole need to first correct bearing hole in machining worm wheel bearing block fixation hole to size requirement, guarantee fixed pore size distribution circle
Then bearing block is moved a distance e2 along a direction by the central coaxial in the center of circle and bearing hole, bore fixation hole to requirement.For
Ensure that the mobile distance of front and back bearings seat is consistent, guarantee machining accuracy, when processing bearing block, it should close front and back bearings seat
And it is split after processing.The working principle of the utility model speed reducer is: the executive components such as motor or motor are connected by key drive
Worm screw rotation, the rotation of worm drive worm gear are rotated by key connection band movable gear shaft again.
Claims (6)
1. a kind of bilateral adjustable-center-distance speed reducer, it is characterized in that: it includes shell (1), worm component, Worm-gear assembly, snail
Bar assembly, Worm-gear assembly are connected with shell (1)；Worm component includes that worm screw (7), worm screw connection end bearing block (5), worm screw are solid
Fixed end bearing block (8), tapered roller bearing (6), it is solid respectively that worm screw fixed end bearing block (8) connects end bearing block (5) with worm screw
It is scheduled on the left and right sides of shell (1) lower part, worm screw (7) is arranged in shell (1), and both ends are provided with tapered roller bearing (6)；Snail
Wheel assembly includes worm gear (11), gear shaft (4), front-end bearing pedestal (12), rear bearing block (2), deep groove ball bearing (3), front-end bearing pedestal
(12) and rear bearing block (2) is separately fixed at the rear and front end on shell (1) top；The shaft part of gear shaft (4) is arranged in shell (1)
Interior, its tooth section is located at outside shell (1), and the both ends of gear shaft (4) shaft part are provided with deep groove ball bearing (3), and worm gear (11) passes through
Flat key (10) is connected on gear shaft (4), and is meshed with worm screw (7)；Worm screw connects end bearing block (5) and worm screw fixing end axis
The worm bearing seat fixation hole (13) held on seat (8) is kidney slot, thereon the center of lower half circular hole and kidney slot center away from
It is e1 from i.e. eccentricity.
2. bilateral adjustable-center-distance speed reducer according to claim 1, it is characterized in that: front-end bearing pedestal (12) and rear bearing
Seat (2) on several Worm Bearing seat fixation holes (14) distribution circle center be r2, r2 relative to front-end bearing pedestal (12) and after
There are eccentric amount es 2 by the center r1 of bearing hole (15) on bearing block (2).
3. bilateral adjustable-center-distance speed reducer according to claim 2, it is characterized in that: several Worm Bearing seats are fixed
It is annular array between hole (14), the central point of annular array is r2.
4. bilateral adjustable-center-distance speed reducer according to claim 2, it is characterized in that: the value model of eccentric amount e 1, e2
It encloses are as follows: 0~2mm.
5. bilateral adjustable-center-distance speed reducer according to claim 1, it is characterized in that: worm screw (7) setting connects in worm screw
In the space for connecing end bearing block (5), worm screw fixed end bearing block (8) and shell (1) three formation, end bearing block is connected in worm screw
(5), tapered roller bearing (6) are provided between the inner hole of worm screw fixed end bearing block (8) and the radial direction at worm screw (7) both ends；Tooth
Wheel shaft (4) shaft part is arranged in the space that front-end bearing pedestal (12), rear bearing block (2) and shell (1) three are formed, in front-end bearing pedestal
(12), the inner hole of rear bearing block (2) and gear shaft (4) shaft part both ends have been arranged radially deep groove ball bearing (3).
6. bilateral adjustable-center-distance speed reducer according to claim 1, it is characterized in that: bilateral adjustable-center-distance slows down
Machine further includes shaft block ring (9), and shaft block ring (9) covers on gear shaft (4), the deep groove ball bearing (3) of left end and front
Front end face is in contact, and outer circle is in contact with the inner hole of front-end bearing pedestal (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555830.4U CN208431353U (en) | 2018-04-19 | 2018-04-19 | A kind of bilateral adjustable-center-distance speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555830.4U CN208431353U (en) | 2018-04-19 | 2018-04-19 | A kind of bilateral adjustable-center-distance speed reducer |
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| Publication Number | Publication Date |
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| CN208431353U true CN208431353U (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820555830.4U Active CN208431353U (en) | 2018-04-19 | 2018-04-19 | A kind of bilateral adjustable-center-distance speed reducer |
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| CN (1) | CN208431353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932158A (en) * | 2019-04-02 | 2019-06-25 | 重庆科技学院 | Wedge spoiler adjusts rotating device |
-
2018
- 2018-04-19 CN CN201820555830.4U patent/CN208431353U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932158A (en) * | 2019-04-02 | 2019-06-25 | 重庆科技学院 | Wedge spoiler adjusts rotating device |
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