CN201539544U - Rolling ball screw pair with safety protection - Google Patents
Rolling ball screw pair with safety protection Download PDFInfo
- Publication number
- CN201539544U CN201539544U CN2009202455557U CN200920245555U CN201539544U CN 201539544 U CN201539544 U CN 201539544U CN 2009202455557 U CN2009202455557 U CN 2009202455557U CN 200920245555 U CN200920245555 U CN 200920245555U CN 201539544 U CN201539544 U CN 201539544U
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- CN
- China
- Prior art keywords
- nut
- ball
- screw
- leading screw
- screw pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a rolling ball screw pair with safety protection, which is composed of a leading screw, a nut and steel rolling balls, wherein, the nut which is screwed on the leading screw is composed of an upper half ball nut and a lower half T-shaped nut. The inside of the upper half ball nut is provided with a plurality of screw thread raceway grooves. The steel rolling balls are equipped in a spiral raceway of steel balls, which is composed of the leading screw and the screw thread raceway grooves of the upper half ball nut. The inside of the lower half T-shaped nut is provided with a plurality of T-shaped grooves which are engaged with the screw thread raceway groove of the leading screw. When the rolling ball screw pair is used, only the upper ball nut operates. When the upper ball nut is damaged, the whole nut does not fall off because of the protection of the T-shaped groove of the lower T-shaped nut, thereby ensuring the device safety. The rolling ball screw pair has a simple structure and a high safety, and is suitable for being used in heavy equipment which is used vertically and has larger load.
Description
Technical field
The utility model belongs to the mechanical transmission component technical field, relate to a kind of be used for vertical use and load than the ball screw pair on the large equipment.
Background technique
The mechanical transmission component that ball screw pair is made up of parts such as leading screw, nut and ball steel balls, its effect is the straight line motion that changes rotatablely moving of leading screw the straight line motion of nut (or leading screw) into or rotatablely moving of nut changed into leading screw (or nut), owing to have the advantage that can realize the continuous transmission of highi degree of accuracy, therefore it is widely used in having promoted the numerical control development process of these industries dramatically in machine industry and the various relevant mechanical industries.
In many jumboes, when ball screw pair vertically used, the load that it bore was very big at present, can reach tens tons of weights sometimes.And in some heavy machineries, because the impaired generation of steel ball is cracked in the ball screw pair, or reason such as, the lead screw pair excess of stroke insecure because of the back device, steel ball is dropped out and cause the weight of nut and carrying thereof to fall down, light then cause scrapping of entire equipment, heavy then cause the serious consequence of human injury.
The model utility content
The purpose of this utility model is to avoiding above-mentioned situation to take place providing a kind of rational in infrastructure, reliable performance, can guaranteeing the ball screw pair of the band safety protection that device security uses.
Be used to realize that the technical solution of foregoing invention purpose is such: a kind of ball screw pair with safety protection that is provided is by leading screw; nut and ball steel ball are formed; nut sleeve is contained on the leading screw; be provided with multi-turn screw thread raceway groove in the outside of leading screw; it is characterized in that nut is made of upper half part ball nut and lower half portion T type nut one; be provided with multi-turn screw thread raceway groove in the inboard of upper half part ball nut; the ball steel ball is contained in the steel ball spiral rolling track of being made up of the screw thread raceway groove of leading screw and upper half part ball nut, is provided with the T type groove of multi-turn and the interlock of threads of lead screw raceway groove in the inboard of lower half portion T type nut.Implement to leave the gap of 0.2mm between the T type groove of lower half portion T type nut and threads of lead screw raceway groove connecting part in the structure.
The utility model is for eliminating the potential safety hazard in the ball screw pair use, and the spy is designed to two kinds of different forms with the ball nut internal whorl, and its top is divided into ball nut, and the bottom is divided into T type nut.When ball screw pair uses, have only the ball nut on top partly to work, therefore lower half portion T type nut can not have influence on the operation of upper spheres nut owing to leave certain interval between T type groove and ball screw; When the upper spheres nut was damaged, nut was whole because of unlikely the falling down of protection of bottom T type groove arranged, thereby has guaranteed the safety of equipment.
Compared with prior art, ball screw pair described in the utility model simple in structure, safe is suitable for vertically using, using on the jumbo that load is bigger.
Description of drawings
Fig. 1 is the structural representation of a specific embodiment of the utility model.
Fig. 2 is the D portion enlarged view among Fig. 1.
Embodiment
As shown in the figure, the ball screw pair of band safety protection described in the utility model is made up of leading screw 1, nut and ball steel ball 3.The leading screw 1 that outer side wall is provided with screw thread raceway groove is sleeved in the nut, upper half part of nut is a ball nut 41, the middle ball steel ball 3 that passes through is connected with leading screw 1, and lower half portion of nut is a T type nut 42, the screw thread raceway groove interlock of its madial wall T type groove and leading screw 1.In the concrete structure, leave the gap (Fig. 2) of 0.2mm between the T type groove of T type nut 42 and threads of lead screw raceway groove connecting part, assurance ball screw pair T type nut 42 of nut bottom when work does not produce with leading screw 1 and contacts, and nut carries out work by upper spheres nut 41 parts.When upper spheres nut 41 parts steel ball occurred and fortuitous event such as break, the T type groove and the leading screw raceway groove of bottom T type nut 42 were killed, and nut were hung over be unlikely on the leading screw 1 to fall down, and can in time change ball screw pair this moment, the safety of protection equipment.Label 2 is a dust ring among Fig. 1.
Claims (2)
1. ball screw pair with safety protection; by leading screw (1); nut and ball steel ball (3) are formed; nut sleeve is contained on the leading screw (1); be provided with multi-turn screw thread raceway groove in the outside of leading screw (1); it is characterized in that nut is made of upper half part ball nut (41) and lower half portion T type nut (42) one; be provided with multi-turn screw thread raceway groove in the inboard of upper half part ball nut (41); ball steel ball (3) is contained in the steel ball spiral rolling track of being made up of the screw thread raceway groove of leading screw (1) and upper half part ball nut (41), is provided with the T type groove of multi-turn and the interlock of threads of lead screw raceway groove in the inboard of lower half portion T type nut (42).
2. the ball screw pair of band safety protection according to claim 1 is characterized in that leaving between the T type groove of lower half portion T type nut (42) and threads of lead screw raceway groove connecting part the gap of 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455557U CN201539544U (en) | 2009-12-01 | 2009-12-01 | Rolling ball screw pair with safety protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202455557U CN201539544U (en) | 2009-12-01 | 2009-12-01 | Rolling ball screw pair with safety protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539544U true CN201539544U (en) | 2010-08-04 |
Family
ID=42590996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202455557U Expired - Fee Related CN201539544U (en) | 2009-12-01 | 2009-12-01 | Rolling ball screw pair with safety protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539544U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542056A (en) * | 2013-10-24 | 2014-01-29 | 南京工艺装备制造有限公司 | Ball nut |
| CN111022599A (en) * | 2019-11-28 | 2020-04-17 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
| CN114439894A (en) * | 2022-02-15 | 2022-05-06 | 天津德科智控股份有限公司 | Manufacturing method of end face internal circulation reverser |
-
2009
- 2009-12-01 CN CN2009202455557U patent/CN201539544U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542056A (en) * | 2013-10-24 | 2014-01-29 | 南京工艺装备制造有限公司 | Ball nut |
| CN111022599A (en) * | 2019-11-28 | 2020-04-17 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
| CN111022599B (en) * | 2019-11-28 | 2021-06-08 | 北京自动化控制设备研究所 | Supporting device for planetary roller screw and electromechanical actuator with same |
| CN114439894A (en) * | 2022-02-15 | 2022-05-06 | 天津德科智控股份有限公司 | Manufacturing method of end face internal circulation reverser |
| CN114439894B (en) * | 2022-02-15 | 2023-08-29 | 天津德科智控股份有限公司 | Manufacturing method of end surface internal circulation reverser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20101201 |