CN204935678U - A kind of bearing protection structure of robot - Google Patents
A kind of bearing protection structure of robot Download PDFInfo
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- CN204935678U CN204935678U CN201520746851.0U CN201520746851U CN204935678U CN 204935678 U CN204935678 U CN 204935678U CN 201520746851 U CN201520746851 U CN 201520746851U CN 204935678 U CN204935678 U CN 204935678U
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- dottle pin
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Abstract
The utility model provides a kind of bearing protection structure of robot, belongs to manipulator technical field.The technical problems such as the sealing ring it solving the bearing of existing robot easily damages.Robot comprises the gear-box with chamber and the pinion stand be connected on gear-box; the bearing of band sealing ring is provided with between gear-box and pinion stand; pinion stand is connected with gear; gear is positioned at chamber; bearing one end is towards chamber; the bearing protection structure of robot comprises ringwise dottle pin, and dottle pin is fixed on gear-box, dottle pin between chamber and bearing and dottle pin chamber and bearing are separated.The utility model has and can prevent grease from directly impacting on the sealing ring of bearing, protects the sealing ring of bearing, extends the advantage in the service life of bearing.
Description
Technical field
The utility model belongs to manipulator technical field, relates to a kind of bearing protection structure of robot.
Background technology
At present, increasing product is passed through production line balance out, and along with the development of science and technology, the workman replaced on streamline by robot is trend of the times.
Robot has mechanical arm usually, mechanical arm realizes action by gear drive, and the bearing indispensable parts that are gear drive, in order to reach high accuracy transmission and the object of minimizing maintenance cost, the bearing adopted in robot mostly at present is the deep groove ball bearing carrying sealing ring, this bearing is filled with lubricating grease, Maintenance free can be lubricated all the life, when bearing is arranged in gear-box, its end face and gear-box chamber are straight-through, the bearing support structure [Authorization Notice No. CN204450577U] of such as a kind of robot wrist disclosed in Chinese patent literature.
Gear is also need lubrication when transmission, gear passes through grease lubrication when rotating, can by grease when high-speed gear rotates, get rid of the end face to bearing, namely grease can directly impact on the sealing ring on bearing face, sealed ring deformation can be caused after a long time use to damage and to lose sealing function, cause lubricating grease in bearing to occur the situation of leaking, and then cause bearing to lose enough lubrications causing wear damage.
In order to solve the problem, there are two kinds of solutions at present.One, the grease that directly application consistency is high; due to the grease thickness that denseness is high; grease is difficult to the sealing ring be thrown out of bearing and damages; therefore the effect of protection bearing can be played, but denseness grease lubrication poor-performing, add the friction between gear; affect service life and improve maintenance cost; too increase the noise that gear transmits, the high-consistency grease price of high-quality is also very expensive simultaneously, improves cost.Two, outside bearing, refill an oil sealing, this impulsive force is blocked by front end bearing, and outer side seal can not destroy, but an increase oil sealing can increase the resistance of transmission resistance with sealing ring on bearing, also will increase structure width simultaneously.Although above-mentioned two kinds of solutions can avoid bearing sealed ring to be damaged, all can impact the performance of robot.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of bearing protection structure of robot, and the technical problem that the utility model solves protects bearing sealed ring when not affecting robot performance.
The purpose of this utility model realizes by following technical proposal:
A kind of bearing protection structure of robot; robot comprises the gear-box with chamber and the pinion stand be connected on gear-box; the bearing of band sealing ring is provided with between gear-box and pinion stand; described pinion stand is connected with gear, and described gear is positioned at chamber, and bearing one end is towards chamber; it is characterized in that; this bearing protection structure comprises ringwise dottle pin, and described dottle pin is fixed on gear-box, described dottle pin between chamber and bearing and dottle pin chamber and bearing are separated.
Grease when pinion rotation on gear can because centrifugal force throws away, by arranging, the grease got rid of to bearing can be stopped by chamber and the separated dottle pin of bearing, namely grease can be splashed on dottle pin, and can not directly impact on the sealing ring of bearing, thus can not damage the sealing ring of bearing, thus protect the sealing ring of bearing, extend the service life of bearing; The lubrication of robot gear can be made to adopt the grease that denseness is low by arranging dottle pin, improving the lubricant effect that gear is shown in, improving service life, reducing maintenance times, reducing the noise that gear transmits, cost-saving; The sealing ring of bearing can be protected when ensureing robot performance by increasing dottle pin.
In the bearing protection structure of above-mentioned robot; described gear-box has the installing port with chamber; described installing port has positioning step; described bearing is arranged in positioning step; the outer ring of described bearing and the sidewall of positioning step are fixed; inner ring and the pinion stand of described bearing are fixed, and described dottle pin is fixed between positioning step and bearing.This structure makes dottle pin and bearing be fixed together; make dottle pin and bearing more close, chamber and bearing can be separated by dottle pin completely, thus prevent grease to be splashed on the sealing ring of bearing; protect the sealing ring of bearing, extend the service life of bearing.
In the bearing protection structure of above-mentioned robot; the outer peripheral face of described dottle pin and the sidewall of positioning step against; the downside of described dottle pin and the bottom surface of positioning step against; the upper side of described dottle pin has near the inner side of dottle pin dodges step; the upper side of described dottle pin and the cycle surface of bearing against, described in dodge step relative with the inner ring end face of bearing.Dottle pin and bearing recline; because pinion stand opposed gear case can rotate; therefore by dodge inner ring that step makes bearing not with dottle pin against; ensure freely rotating of the inner ring of bearing; also ensure that the end face of bearing towards chamber covers by dottle pin simultaneously; prevent grease from directly impacting the sealing ring of bearing, protect the sealing ring of bearing, extend the service life of bearing.
In the bearing protection structure of above-mentioned robot, described in dodge step width be greater than or equal to the thickness of the inner ring of bearing.This structure dodge inner ring that step makes bearing not with dottle pin against, ensure freely rotating of the inner ring of bearing.
In the bearing protection structure of above-mentioned robot, the width of described dottle pin is identical with the width of bearing.Just the end face of bearing towards chamber is covered when this structure makes dottle pin be fixed in positioning step, protect the sealing ring of bearing, make dottle pin and bearing install compact simultaneously.
In the bearing protection structure of above-mentioned robot, the sidewall of described positioning step has annular oil groove, and the upper edge of described annular oil groove contacts with the outer ring side face of bearing, and the lower edge of described annular oil groove contacts with the outer peripheral face of dottle pin.Grease can infiltrate between dottle pin and the outer ring of bearing; the grease infiltrated can cause compressing to cause sealed ring deformation impaired to the sealing ring of bearing; said structure can make to infiltrate grease between dottle pin and the outer ring of bearing and be squeezed in annular oil groove; thus prevent grease from oppressing the sealing ring of bearing; thus play the sealing ring protecting bearing further, improve the service life of bearing.
Compared with prior art, the bearing protection structure of robot has and can prevent grease from directly impacting on the sealing ring of bearing, thus can not damage the sealing ring of bearing, thus protect the sealing ring of bearing, extend the advantage in the service life of bearing.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of robot.
Fig. 2 is the partial enlargement structural representation in A portion in Fig. 1.
Fig. 3 is the perspective cross-sectional structural representation of dottle pin.
In figure, 1, gear-box; 11, installing port; 12, positioning step; 121, annular oil groove; 13, chamber; 2, pinion stand; 21, gear; 3, bearing; 31, sealing ring; 4, dottle pin; 41, step is dodged.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
The present embodiment as shown in Figure 1 to Figure 3, robot comprises the gear-box 1 with chamber 13 and the pinion stand 2 be connected on gear-box 1, be provided with the bearing 3 of band sealing ring 31 between gear-box 1 and pinion stand 2, the present embodiment middle (center) bearing 3 is-2RS bearing, belongs to deep groove ball bearing; Gear-box 1 has the installing port 11 be communicated with chamber 13, installing port 11 has positioning step 12, bearing 3 is arranged in positioning step 12, the outer ring of bearing 3 and the sidewall of positioning step 12 are fixed, inner ring and the pinion stand 2 of bearing 3 are fixed, bearing 3 one end, towards chamber 13, pinion stand 2 is connected with gear 21, and gear 21 is positioned at chamber 13.
The bearing protection structure of robot comprises ringwise dottle pin 4, and dottle pin 4 is fixed on gear-box 1, and dottle pin 4 is fixed between positioning step 12 and bearing 3 specifically, and between chamber 13 and bearing 3 and dottle pin 4 chamber 13 and bearing 3 are separated.The outer peripheral face of dottle pin 4 and the sidewall of positioning step 12 against, the downside of dottle pin 4 and the bottom surface of positioning step 12 against, the upper side of dottle pin 4 has near the inner side of dottle pin 4 dodges step 41, the upper side of dottle pin 4 and the cycle surface of bearing 3 against, dodge step 41 relative with the inner ring end face of bearing 3, the width of dottle pin 4 is identical with the width of bearing 3.The width of dodging step 41 is greater than or equal to the thickness of the inner ring of bearing 3, as preferably, the width of dodging step 41 in the present embodiment is greater than the thickness of the inner ring of bearing 3, by dodge inner ring that step 41 makes bearing 3 not with dottle pin 4 against, ensure freely rotating of the inner ring of bearing 3.
The sidewall of positioning step 12 has annular oil groove 121, the upper edge of annular oil groove 121 contacts with the outer ring side face of bearing 3, the lower edge of annular oil groove 121 contacts with the outer peripheral face of dottle pin 4, make to infiltrate grease between dottle pin 4 and the outer ring of bearing 3 to be squeezed in annular oil groove 121, thus prevent grease from oppressing the sealing ring 31 of bearing 3.Dodging step 41 bottom surface relative with the inner ring end face of bearing 3 is round table surface; this bottom surface is from the downside being tilted to dottle pin 4 outside to inside; this structure makes to be positioned at the grease of dodging on step 41 and flows back to chamber 13 by gravity; grease is avoided to enter between the sealing ring 31 of dottle pin 4 and bearing 3; thus the pressure that minimizing sealing ring 31 is subject to, reach the effect of the sealing ring 31 of protection bearing 3.
Grease when gear 21 rotates on gear 21 can because centrifugal force throws away, by arranging, the grease got rid of to bearing 3 can be stopped by chamber 13 and the separated dottle pin 4 of bearing 3, namely grease can be splashed on dottle pin 4, and can not directly impact on the sealing ring 31 of bearing 3, thus can not damage the sealing ring 31 of bearing 3, thus protect the sealing ring 31 of bearing 3, extend the service life of bearing 3; The lubrication of robot gear 21 can be made to adopt the grease that denseness is low by arranging dottle pin 4, improving the lubricant effect that gear 21 is shown in, improving service life, reducing maintenance times, reducing the noise that gear 21 transmits, cost-saving; The sealing ring 31 of bearing 3 can be protected when ensureing robot performance by increasing dottle pin 4.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (6)
1. the bearing protection structure of a robot, robot comprises the gear-box (1) with chamber (13) and the pinion stand (2) be connected on gear-box (1), the bearing (3) of band sealing ring (31) is provided with between gear-box (1) and pinion stand (2), described pinion stand (2) is connected with gear (21), described gear (21) is positioned at chamber (13), bearing (3) one end is towards chamber (13), it is characterized in that, this bearing protection structure comprises ringwise dottle pin (4), described dottle pin (4) is fixed on gear-box (1), described dottle pin (4) is positioned between chamber (13) and bearing (3) and chamber (13) and bearing (3) are separated by dottle pin (4).
2. the bearing protection structure of robot according to claim 1; it is characterized in that; described gear-box (1) has the installing port (11) be communicated with chamber (13); described installing port (11) has positioning step (12); described bearing (3) is arranged in positioning step (12); the outer ring of described bearing (3) and the sidewall of positioning step (12) are fixed; the inner ring of described bearing (3) and pinion stand (2) are fixed, and described dottle pin (4) is fixed between positioning step (12) and bearing (3).
3. the bearing protection structure of robot according to claim 2; it is characterized in that; the outer peripheral face of described dottle pin (4) and the sidewall of positioning step (12) against; the downside of described dottle pin (4) and the bottom surface of positioning step (12) against; the upper side of described dottle pin (4) has near the inner side of dottle pin (4) dodges step (41); the upper side of described dottle pin (4) and the cycle surface of bearing (3) against, described in dodge step (41) relative with the inner ring end face of bearing (3).
4. the bearing protection structure of robot according to claim 3, is characterized in that, described in dodge step (41) width be greater than or equal to the thickness of the inner ring of bearing (3).
5. the bearing protection structure of robot as claimed in any of claims 1 to 4, is characterized in that, the width of described dottle pin (4) is identical with the width of bearing (3).
6. the bearing protection structure of the robot according to Claims 2 or 3 or 4; it is characterized in that; the sidewall of described positioning step (12) has annular oil groove (121); the upper edge of described annular oil groove (121) contacts with the outer ring side face of bearing (3), and the lower edge of described annular oil groove (121) contacts with the outer peripheral face of dottle pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746851.0U CN204935678U (en) | 2015-09-24 | 2015-09-24 | A kind of bearing protection structure of robot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520746851.0U CN204935678U (en) | 2015-09-24 | 2015-09-24 | A kind of bearing protection structure of robot |
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| CN204935678U true CN204935678U (en) | 2016-01-06 |
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| CN201520746851.0U Active CN204935678U (en) | 2015-09-24 | 2015-09-24 | A kind of bearing protection structure of robot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108775A (en) * | 2015-09-24 | 2015-12-02 | 浙江钱江摩托股份有限公司 | Bearing protection structure of robot |
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2015
- 2015-09-24 CN CN201520746851.0U patent/CN204935678U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105108775A (en) * | 2015-09-24 | 2015-12-02 | 浙江钱江摩托股份有限公司 | Bearing protection structure of robot |
| CN105108775B (en) * | 2015-09-24 | 2017-12-15 | 浙江钱江摩托股份有限公司 | A kind of bearing protection structure of robot |
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