CN209539962U - A kind of preloading compensation mechanism of gear tooth side gap - Google Patents
A kind of preloading compensation mechanism of gear tooth side gap Download PDFInfo
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- CN209539962U CN209539962U CN201920084642.2U CN201920084642U CN209539962U CN 209539962 U CN209539962 U CN 209539962U CN 201920084642 U CN201920084642 U CN 201920084642U CN 209539962 U CN209539962 U CN 209539962U
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Abstract
The utility model belongs to transmission device technical field, compensation mechanism is preloaded more particularly to a kind of gear tooth side gap, specifically include the second master gear, pre-load nut and the splined shaft of the first master gear, coaxial arrangement, the side of first master gear is axially disposed several helical tooths, the axially disposed spiral alveolar for thering are several to match with the helical tooth in the side of second master gear, in the helical tooth insertion spiral alveolar, after one end of the splined shaft sequentially passes through the centre bore of the first master gear, the second master gear, it is fixedly connected with pre-load nut.Gear tooth side gap described in the utility model preloads the pre-load nut of compensation mechanism in spline axle thread screwing operations, and the helical tooth for the first master gear provides axial load, so that the gear be forced to form side set along helical engagement sliding rotation.Helicoid is according to helix angle difference, it is possible to provide different proportion axial pre tightening force and side set cooperate loading force.
Description
Technical field
The utility model belongs to transmission device technical field, and in particular to a kind of preloading compensation mechanism of gear tooth side gap.
Background technique
In gun turret orientation, pitching drive transmission device, gear drive because its stable transmission is reliable, high transmission accuracy,
The features such as large carrying capacity is a kind of kind of drive most conventional at present.Gun turret orientation, pitching drive transmission requirement can be real simultaneously
Now reciprocal bi-directional rotary, this requires gear drives to eliminate backlash using corresponding measure, reciprocal double to guarantee
To transmission accuracy.Simultaneously as magnetic artillery, high load capacity heavy duty big gun require bigger transmitting torque realize high-precision it is servo-actuated and
The requirement for overcoming rotary inertia, to gear-driven reciprocal transfer strength, more stringent requirements are proposed.
In order to solve this problem, the utility model patent (application number CN02284069.9) of Qiu Xinqiao application discloses one
Kind automatic compensation mechanism for gear teeth side gap, the compensation mechanism is mainly by sliding pin, spring and two cunnings on Double-gear
Slot is constituted；The sliding pin can slide along longitudinal direction in the sliding slot, and top is limited by the cover board for being mounted on gear face；The bullet
Spring pressing is between the sliding pin and gear；The center line of described two sliding slots has angle.Between the two sliding slots center line
Angle control within the scope of 5 °~7 °.There is one radially to arrange in described two sliding slots along gear.Since bearing capacity is main
It is provided by spring or sliding pin, as load increases, the installation space of spring or sliding pin can be increasing, to influence complete equipment
Mounting arrangement, or even sufficient space can not be provided and installed.In addition, a variety of mechanisms for eliminating backlash are had also appeared,
But it is constantly present different degrees of deficiency: structure is complicated, occupies the defects such as dimensional space is big, bearing capacity is low.Cause
This, the new mechanism of simple, large carrying capacity the elimination backlash of design research and development structure returns gear drive in raising gun turret
Turn to have great significance in precision.
Utility model content
The purpose of this utility model is to provide a kind of gear tooth side gaps to preload compensation mechanism, solves existing compensation mechanism
Structure is complicated, occupies the problem that dimensional space is big, bearing capacity is low.
The realization process of the utility model is as follows:
A kind of preloading compensation mechanism of gear tooth side gap, including the first master gear, the second master gear of coaxial arrangement, preload
Nut and splined shaft, the side of first master gear is axially disposed several helical tooths, the side of second master gear
The axially disposed spiral alveolar for having several to match with the helical tooth in face, the helical tooth are inserted into spiral alveolar, institute
State splined shaft one end sequentially pass through the centre bore of the first master gear, the second master gear after, be threadedly coupled with pre-load nut.
Further, fastening screw is provided on the pre-load nut, the pre-load nut is realized circumferential by fastening screw
It is fixed.
Further, spline, the spline and splined shaft phase are provided on the inside of the centre bore of first master gear
Match, first master gear is realized circumferentially fixed by the spline of splined shaft.
It further, is shiny surface on the inside of the centre bore of second master gear, second master gear is by by helical tooth
It realizes and rotates in a circumferential direction in insertion spiral alveolar.
Further, second master gear realizes axial compression by pre-load nut.
Further, the gap of first master gear and the second master gear adjacent side is 3-6mm.
Further, when the pre-load nut compresses the first master gear and the second master gear, the second master gear is relative to the
One master gear forms dislocation.
Be provided with internal screw thread on the inside of pre-load nut described in the utility model, the front end of the splined shaft be provided with in advance
External screw thread that the internal screw thread of tight nut matches, one end of the splined shaft sequentially pass through the first master gear, the second master gear
After centre bore, compressed with pre-load nut by screw thread.
The good effect of the utility model:
(1) pre-load nut that gear tooth side gap described in the utility model preloads compensation mechanism was screwed with spline axle thread
Cheng Zhong provides axial load and provides axial load, to force the gear along threaded engagement for the spiral alveolar of the second master gear
Face sliding rotation forms side set.Helicoid is according to helix angle difference, it is possible to provide different proportion axial pre tightening force and side set cooperate
Loading force.
(2) helical tooth can different angle arrangement realize that gear is two-way to provide different side sets cooperation load and preload
Lotus.
(3) the utility model is illustrated by structure, and axial pre-load arrangement is used to carry out preloading compensation.
(4) compensation mechanism described in the utility model can be preloaded according to environmental condition difference, adjustment difference.
Detailed description of the invention
Fig. 1 is the perspective view that gear tooth side gap described in the utility model preloads compensation mechanism；
Fig. 2 is the use state perspective view that gear tooth side gap described in the utility model preloads compensation mechanism；
Fig. 3 is the use state sectional view that gear tooth side gap described in the utility model preloads compensation mechanism；
Fig. 4 is the perspective view of the first master gear described in the utility model；
Fig. 5 is the perspective view of the second master gear described in the utility model；
Fig. 6 is that dislocation magnitude relation described in the utility model is calculated with reference to figure；
In figure, 1 first master gear, 11 splines, 12 helical tooths, 2 second master gears, 21 spiral alveolars, 3 pre-load nuts,
31 fastening screws, 4 splined shafts, 5 gaps, 6 bull gears.
Specific embodiment
The utility model is described further below with reference to embodiment.
In order to solve the problems, such as existing compensation mechanism, structure is complicated, occupancy dimensional space is big, bearing capacity is low, is gun turret side
Position, pitch drive mechanism provide the anti-backlash mechanism of a kind of high-precision, large torque, realize gun turret orientation, pitch drive mechanism it is big
Torque, high-precision rotary, the utility model provide a kind of preloading compensation mechanism of gear tooth side gap.
Embodiment 1
Gear tooth side gap described in the present embodiment preloads compensation mechanism, sees Fig. 1, including the first master gear 1, coaxial arrangement
Second master gear 2, pre-load nut 3 and splined shaft 4, the side of first master gear 1 is axially disposed several helical tooths
12, see Fig. 4, the axially disposed helical tooth for there are several to match with the helical tooth 12 in the side of second master gear 2
Slot 21, is shown in Fig. 5, and the helical tooth 12 is inserted into spiral alveolar 21, one end of the splined shaft 4 sequentially pass through the first master gear 1,
It after the centre bore of second master gear 2, is threadedly coupled with pre-load nut 3,2 sides adjacent of first master gear 1 and the second master gear
The gap in face is 3-6mm, and fastening screw 31 is provided on the pre-load nut 3, and the pre-load nut 3 is real by fastening screw 31
It is existing circumferentially fixed.Spline 11, the spline 11 and 4 phase of splined shaft are provided on the inside of the centre bore of first master gear 1
Matching, first master gear 1 are realized circumferentially fixed by the spline of splined shaft 4.On the inside of the centre bore of second master gear 2
For shiny surface, second master gear 2 is rotated in a circumferential direction by will realize in the insertion spiral alveolar 21 of helical tooth 12.Described second is main
Gear 2 realizes axial compression by pre-load nut 3.When the pre-load nut 3 compresses the first master gear 1 and the second master gear 2,
Second master gear 2 is formed relative to the first master gear 1 and is misplaced.
Gear tooth side gap described in the utility model preloads compensation mechanism and is applied to the bull gear 6 with internal tooth, uses shape
State is shown in Fig. 2 and Fig. 3.The gear tooth side gap preloads the working principle of compensation mechanism: the helical tooth 12 is inserted into spiral alveolar
In 21, the first master gear 1 is matched with the second master gear 2, and one end of splined shaft 4 sequentially passes through the first master gear 1, the second main tooth
After the centre bore of wheel 2, it is threadedly coupled with pre-load nut 3, fastening screw 31 is circumferentially fixed by pre-load nut 3.By pre- when the gap that disappears
Tight nut 3 compresses the first master gear 1 and the second master gear 2, moves opposite first master gear 1 of the second master gear 2 circumferentially, axially
It is dynamic, flank of tooth dislocation is formed, the non-working surface of the second master gear 2 and the non-working surface of the bull gear 6 engaged with the second master gear 2 are made
Contact, the work face contact of the working face of the first master gear 1 and the bull gear 6 engaged with the first master gear 1 complete the gap that disappears.
More big compared to lead angle of the angle of spiral of spiral alveolar 21 described in the utility model.Spiral alveolar 21 is
The section of " tooth form " is changed to that radially width is larger, the shorter fan of arc length along circumferential direction by transmitting sufficiently large torque
Shape structure preferably realizes flank of tooth dislocation, completes the gap that disappears.
The calculating of the dislocation magnitude relation of flank of tooth dislocation described in the utility model is as follows:
In Fig. 6, α is the angle of spiral of spiral alveolar 21, and B is the axial position of opposite first master gear 1 of the second master gear 2
Shifting amount, A are opposite rotate in a circumferential direction arc length of first master gear 1 in sector structure central diameter of the second master gear 2.
Tan α=B/A known in figure
The arc length that rotates in a circumferential direction so on gear compound graduation circle are as follows:
C=A*dc/da
Wherein dcFor reference diameter, daThe diameter of sector structure central diameter.
It is now assumed that C is regarded as first master gear 1, the second master gear 2 and week of 6 flank profil of bull gear on reference circle
To gap, then the axial displacement of opposite first master gear 1 of the second master gear 2 when the gap that disappear completely are as follows: B=C*da*Tanα/dc
The pre-load nut 3 that gear tooth side gap described in the utility model preloads compensation mechanism was screwed with 4 screw thread of splined shaft
Cheng Zhong provides axial load for the spiral alveolar 21 of the second master gear 2, rotates so that the gear be forced to slide along helical engagement
Form side set.Helicoid is according to helix angle difference, it is possible to provide different proportion axial pre tightening force and side set cooperate loading force.It is described
Helical tooth 12 can different angle arrangement realize that gear is two-way to provide different side sets cooperation load and preload.It is said by structure
It is bright, use axial pre-load arrangement to carry out preloading compensation.The compensation mechanism can be according to environmental condition difference, and adjustment is different
It preloads.
The above content is specific preferred embodiment further description to made by the utility model is combined, no
It can assert that the specific implementation of the utility model is only limitted to these explanations.For the utility model those of ordinary skill in the art
For, without departing from the concept of the premise utility, several simple deduction or replace can also be made, all should be considered as category
In the protection scope of the utility model.
Claims (7)
1. a kind of gear tooth side gap preloads compensation mechanism, it is characterised in that: including the first master gear (1), coaxial arrangement the
Two master gears (2), pre-load nut (3) and splined shaft (4), the side of first master gear (1) is axially disposed several
Helical tooth (12), the side of second master gear (2) is axially disposed to have several to match with the helical tooth (12)
Spiral alveolar (21), the helical tooth (12) are inserted into spiral alveolar (21), and one end of the splined shaft (4) sequentially passes through first
Master gear (1), the second master gear (2) centre bore after, be threadedly coupled with pre-load nut (3).
2. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: on the pre-load nut (3)
It is provided with fastening screw (31), the pre-load nut (3) is realized circumferentially fixed by fastening screw (31).
3. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: first master gear (1)
Centre bore on the inside of be provided with spline (11), the spline (11) matches with splined shaft (4), first master gear
(1) it is realized by the spline of splined shaft (4) circumferentially fixed.
4. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: second master gear (2)
Centre bore on the inside of be shiny surface, second master gear (2) by by helical tooth (12) insertion spiral alveolar (21) in realize
It rotates in a circumferential direction.
5. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: second master gear (2)
Axial compression is realized by pre-load nut (3).
6. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: first master gear (1)
Gap with the second master gear (2) adjacent side is 3-6mm.
7. gear tooth side gap preloads compensation mechanism according to claim 1, it is characterised in that: the pre-load nut (3) will
When first master gear (1) and the second master gear (2) compress, the second master gear (2) is formed relative to the first master gear (1) and is misplaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084642.2U CN209539962U (en) | 2019-01-18 | 2019-01-18 | A kind of preloading compensation mechanism of gear tooth side gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084642.2U CN209539962U (en) | 2019-01-18 | 2019-01-18 | A kind of preloading compensation mechanism of gear tooth side gap |
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| CN209539962U true CN209539962U (en) | 2019-10-25 |
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| CN201920084642.2U Active CN209539962U (en) | 2019-01-18 | 2019-01-18 | A kind of preloading compensation mechanism of gear tooth side gap |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728058A (en) * | 2020-10-14 | 2021-04-30 | 重庆长安工业(集团)有限责任公司 | Internal tooth meshing type anti-backlash transmission mechanism |
| CN115008288A (en) * | 2022-07-01 | 2022-09-06 | 福州鸿基自动化设备有限公司 | Electric floating mechanism and tool changing mechanism for burr removing shaft |
-
2019
- 2019-01-18 CN CN201920084642.2U patent/CN209539962U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728058A (en) * | 2020-10-14 | 2021-04-30 | 重庆长安工业(集团)有限责任公司 | Internal tooth meshing type anti-backlash transmission mechanism |
| CN115008288A (en) * | 2022-07-01 | 2022-09-06 | 福州鸿基自动化设备有限公司 | Electric floating mechanism and tool changing mechanism for burr removing shaft |
| CN115008288B (en) * | 2022-07-01 | 2024-04-05 | 福州鸿基自动化设备有限公司 | Electric floating mechanism of deburring shaft and tool changing mechanism |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A gear backlash preload compensation mechanism Effective date of registration: 20221109 Granted publication date: 20191025 Pledgee: Xi'an spaceflight base financing Company limited by guarantee Pledgor: SHAANXI GENERAL EXPRESS PROFIT INFORMATION AUTO SYSTEM&ENGINEERING Co.,Ltd. Registration number: Y2022610000734 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |