CN113007302A - Screw rod transmission device capable of preventing mechanical jamming and control method thereof - Google Patents
Screw rod transmission device capable of preventing mechanical jamming and control method thereof Download PDFInfo
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- CN113007302A CN113007302A CN202110194524.9A CN202110194524A CN113007302A CN 113007302 A CN113007302 A CN 113007302A CN 202110194524 A CN202110194524 A CN 202110194524A CN 113007302 A CN113007302 A CN 113007302A
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- gunpowder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2266—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers arranged substantially in parallel to the screw shaft axis
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a screw rod transmission device capable of preventing mechanical jamming and a control method thereof, which are used for solving the problem that the whole structure is invalid due to the mechanical jamming of a planetary roller screw rod pair in the operation process in the prior art. A lead screw transmission device capable of preventing mechanical jamming comprises: the screw rod, the roller, the nut, the sleeve, the transmission fixing piece, the elastic piece, the gunpowder cover, the fixing cylinder and the transmission connecting rod mechanism are movably sleeved on the nut; the transmission fixing pieces are radially and movably inserted into the sleeve and the nut in sequence, and at least two transmission fixing pieces are arranged in the circumferential direction; the fixed cylinder is fixedly sleeved on the sleeve, the gunpowder cover is movably sleeved and matched on the sleeve in a sealing mode, a gunpowder loading chamber is formed between the gunpowder cover and the fixed cylinder, the transmission connecting rod mechanism is used for pulling the transmission fixing piece out of the nut, and when gunpowder in the gunpowder chamber explodes, the gunpowder cover moves circumferentially and drives the transmission connecting rod mechanism.
Description
Technical Field
The invention relates to the field of screw transmission of a planetary roller screw pair, in particular to a screw transmission device capable of preventing mechanical jamming and a control method thereof.
Background
The planetary roller screw pair is a rolling screw transmission mechanism with linear and rotary motion interconversion, power is transmitted through multi-point threaded contact among a plurality of rollers, a screw and a nut raceway, and the planetary roller screw pair has the characteristics of more contact points, large bearing capacity and long service life. As an actuating mechanism of an electromechanical actuator in a power electric transmission actuating system, a planetary roller screw pair is gradually applied to the fields of aerospace, ships, intelligent manufacturing, weaponry and the like.
In recent years, studies on planetary roller screw pairs have been advanced to some extent. However, a potential mechanical jamming failure (for example, jamming among parts is still caused due to an excessively large gap after long-time working and abrasion) of the planetary roller screw pair is one of main reasons that hinder further development of the planetary roller screw pair, and particularly when the planetary roller screw pair is applied to an electromechanical actuator in the field of aerospace, the safety problem is particularly important, and the mechanical jamming problem needs to be solved urgently.
In patent CN 111306271a, the electromechanical actuator is quickly assembled in a serial-parallel modular manner according to different situations and different combination modes, so as to meet the requirements of various working conditions. However, it is not considered that, in the case of series-parallel connection, due to the mechanical locking in one or more actuators, such as the locking of a screw portion, the stress of the whole device is not uniform, resulting in structural failure. In addition, other various structural design patents related to the planetary roller screw pair also face transmission failure caused by the problem of mechanical locking under consideration. Therefore, it is of great significance to develop and design a screw transmission device capable of preventing the mechanical locking.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a screw transmission device and a control method thereof, which can prevent mechanical jamming, and is used to solve the problem of the prior art that the planetary roller screw pair is mechanically jammed during operation, which results in the failure of the whole structure.
To achieve the above and other related objects, the present invention provides a screw driving device capable of preventing a mechanical jam, including:
the screw rod, the roller and the nut are matched to convert the rotary motion into linear motion;
the sleeve is movably sleeved on the nut;
the transmission fixing pieces are radially and movably inserted into the sleeve and the nut in sequence, and at least two transmission fixing pieces are arranged in the circumferential direction;
the elastic piece has a tendency of pushing the transmission fixing piece into the sleeve and the nut;
the powder charging device comprises a powder cover and a fixed barrel, wherein the fixed barrel is fixedly sleeved on the sleeve, the powder cover is movably sleeved and matched on the sleeve in a sealing mode, a powder charging chamber is formed between the powder cover and the fixed barrel, powder is charged in the powder charging chamber, and ignition can be controlled through an electrifying head;
and the transmission connecting rod mechanism is used for pulling the transmission fixing piece out of the nut, and when gunpowder in the gunpowder chamber explodes, the gunpowder cover moves circumferentially and drives the transmission connecting rod mechanism.
Optionally, the explosive device further comprises an explosive pin, wherein the explosive pin is used for locking the axial displacement of the explosive cover on the sleeve, one end of the explosive pin is fixed on the explosive cover, and the other end of the explosive pin is radially inserted into the sleeve.
Optionally, the explosive pin is further used for limiting circumferential rotational displacement of the explosive cover on the sleeve, and at least two explosive pins are arranged in the circumferential direction.
Optionally, the elastic element is mounted on the sleeve through a rear cover, the rear cover is fixed on the sleeve, one end of the elastic element is mounted on the inner wall of the rear cover, and the other end of the elastic element is mounted on the transmission fixing element.
Optionally, a hollow bolt is arranged on the rear cover, one end of the elastic piece is arranged in the hollow structure of the hollow bolt, and the other end of the elastic piece is sleeved on a boss at the end part of the transmission fixing piece.
Optionally, the transmission link mechanism includes a turning rod and a pull rod, a turning head is arranged at one end of the turning rod, a corner of the turning head is rotatably mounted on a support lug, the tail end of the turning head is hinged to one end of the pull rod, the other end of the pull rod is directly or indirectly fixed to the gunpowder cover, the other end of the turning rod is a free end, a clamping groove is formed in the transmission fixing piece, and the turning rod is arranged in the clamping groove.
Optionally, the buffer structure is a mechanical structure.
Optionally, the buffer structure includes a first wedge block and a second wedge block, an inclined surface of the first wedge block and an inclined surface of the second wedge block are oppositely matched, the first wedge block is directly or indirectly fixed to the gunpowder cover, and the second wedge block is fixed to the sleeve or the fixing barrel.
Optionally, a plurality of screw rod transmission devices capable of preventing mechanical locking are arranged in parallel.
A control method of a lead screw transmission device capable of preventing mechanical jamming comprises the following steps:
detecting the torque, namely detecting the torque transmitted between the screw rod and the nut in real time;
and executing the step, and starting the electrifying head to ignite the gunpowder when the torque is 1.2 to 1.5 times larger than that in the normal state.
As described above, the screw transmission device and the control method thereof of the present invention capable of preventing mechanical jamming have at least the following advantages:
by adopting the combined mode of the planetary roller screw pair, the embedded lifting device and the firework explosion device, the mechanical connection on a force path can be quickly cut off under the condition that the planetary roller screw pair is mechanically clamped inside, the force applied to the planetary roller screw pair by an external load is timely released, the screw transmission device is greatly protected, and the system reliability is improved. The planetary roller screw pair has novel concept and compact structure, can effectively prevent the mechanical jamming inside the screw transmission device, and can effectively improve the application feasibility and safety of the planetary roller screw pair in the electromechanical actuator.
Specifically, when gunpowder explodes, high pressure is generated in the gunpowder chamber, the gunpowder cover moves in the circumferential direction, the gunpowder cover tilts the transmission fixing piece through the transmission connecting rod mechanism, so that transmission of the sleeve and the nut is eliminated, the sleeve can rotate relative to the nut and move axially, and the plurality of transmission devices connected in parallel cannot be completely failed or damaged due to clamping stagnation of a certain screw rod.
Drawings
Fig. 1 shows the intention of the screw drive according to the invention to prevent mechanical jamming (drive disconnected state).
Fig. 2 shows the intention of the screw drive device of the invention to prevent mechanical jamming (drive connection state).
Fig. 3 shows a three-quarter sectional view of a spindle drive according to the invention, which prevents mechanical jamming.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 3. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.
Referring to fig. 1 to 3, an embodiment of a screw transmission device capable of preventing a mechanical jam according to the present invention includes: the screw rod and nut mechanism comprises a screw rod 1, a roller 2 and a nut 3, the screw rod and nut mechanism is an existing mechanism, other parts are not described in detail, the screw rod and nut mechanism further comprises a sleeve 4, a transmission fixing piece 5, an elastic piece 6 and a transmission connecting rod mechanism 7, and the screw rod 1, the roller 2 and the nut 3 are matched to convert rotary motion into linear motion; the sleeve 4 is movably sleeved on the nut 3; the transmission fixing pieces 5 are radially and movably inserted into the sleeve 4 and the nut 3 in sequence, and at least two transmission fixing pieces 5 are arranged in the circumferential direction; the elastic element 6 has a tendency to push the transmission fixing element 5 into the sleeve 4 and the nut 3; the explosive charging device is characterized by further comprising an explosive cover 8 and a fixed barrel 9, the fixed barrel 9 is fixedly sleeved on the sleeve 4, the explosive cover 8 is movably sleeved on the sleeve 4 and is in sealing fit with the sleeve 4, an explosive charging chamber 80 is formed between the explosive cover 8 and the fixed barrel 9, the explosive charging chamber 80 can be sealed by a sealing ring 801, after explosion occurs, the explosive charging chamber 80 can still be in a sealed state, so that the transmission fixing piece 5 is kept in a pulled-out state, explosive charging is carried out in the explosive charging chamber 80, and ignition can be controlled by a power-on head 802; the transmission link mechanism 7 is used for pulling the transmission fixing piece 5 out of the nut 3, and when gunpowder in the gunpowder chamber explodes, the gunpowder cover 8 moves circumferentially and drives the transmission link mechanism 7. By adopting the combination mode of the planetary roller 2 screw pair, the embedded lifting device and the smoke and fire explosion device, the mechanical connection on a force path can be quickly cut off under the condition that the planetary roller 2 screw pair is mechanically clamped inside, the force applied to the planetary roller 2 screw pair by an external load is timely released, the screw transmission device is greatly protected, and the reliability of the system is improved. The planetary roller 2 screw pair has novel concept and compact structure, can effectively prevent the mechanical jamming in the screw transmission device, and can effectively improve the application feasibility and safety of the planetary roller 2 screw pair in the electromechanical actuator. Specifically, when gunpowder explodes, high pressure is generated in the gunpowder chamber, the gunpowder cover 8 moves circumferentially, the transmission fixing piece 5 is tilted through the transmission connecting rod mechanism 7 by the gunpowder cover 8, so that transmission of the sleeve 4 and the nut 3 is eliminated, the sleeve 4 can rotate and move axially relative to the nut 3, and the transmission devices connected in parallel cannot be completely failed or damaged due to clamping stagnation of a certain screw rod 1.
In this embodiment, please refer to fig. 1 to 3, further comprising a powder pin 81, wherein the powder pin 81 is used for locking the axial displacement of the powder cover 8 on the sleeve 4, one end of the powder pin 81 is fixed on the powder cover 8, and the other end is radially inserted into the sleeve 4. Before the powder pin 81 can reach the preset shearing force again, the transmission connecting rod mechanism 7 cannot drive the transmission fixing piece 5 to be disconnected, and the stability and the reliability of the transmission device in a non-clamping state can be effectively ensured.
In this embodiment, referring to fig. 1 to 3, the explosive pin 81 is further used for limiting the circumferential rotational displacement of the explosive cap 8 on the sleeve 4, and at least two explosive pins 81 are provided in the circumferential direction. Through the injecture of circumferential direction displacement for sleeve 4 is when rotating, and powder lid 8 can follow the rotation, thereby keeps the uniformity, avoids because between powder lid 8 and the solid fixed cylinder 9, the seal structure between powder lid 8 and the sleeve 4 is worn and torn, influences the indoor high-pressure sealing performance of powder.
In this embodiment, referring to fig. 1 to 3, the elastic element 6 is mounted on the sleeve 4 through a rear cover 61, the rear cover 61 is fixed on the sleeve 4, one end of the elastic element 6 is mounted on an inner wall of the rear cover 61, and the other end of the elastic element 6 is mounted on the transmission fixing element 5. Optionally, a hollow bolt 611 is arranged on the rear cover 61, one end of the elastic element 6 is arranged in the hollow structure of the hollow bolt 611, and the other end of the elastic element 6 is sleeved on a boss at the end of the transmission fixing element 5. The elastic member 6 may be a spring, and the hollow bolt 611 and the boss can respectively position two ends of the spring.
In this embodiment, referring to fig. 1 to 3, the transmission link mechanism 7 includes an overturning rod 71 and a pull rod 72, one end of the overturning rod 71 is provided with an elbow 711, a corner of the elbow 711 is rotatably mounted on a support lug 712, a terminal of the elbow 711 is hinged to one end of the pull rod 72, the other end of the pull rod 72 is directly or indirectly fixed to the gunpowder cover 8, the other end of the overturning rod 71 is a free end, the transmission fixing member 5 is provided with a clamping groove 51, and the overturning rod 71 is disposed in the clamping groove 51. Explosion expansion makes the gunpowder lid 8 take place axial displacement in the charging chamber 80, and gunpowder lid 8 pulling pull rod 72, the moment of production of pull rod 72 rethread turning head 711 department lets upset pole 71, thereby upset pole 71 upset stirs transmission mounting 5 radial movement and extracts from nut 3 to the transmission of disconnection nut 3 and sleeve 4 is connected, makes nut 3 and sleeve 4 can rotate relatively, again can relative axial motion.
In this embodiment, please refer to fig. 1 to 3, which further include a buffer structure, wherein the buffer structure is a mechanical structure. Optionally, the buffering structure includes a first wedge block 101 and a second wedge block 102, an inclined surface of the first wedge block 101 and an inclined surface of the second wedge block 102 are oppositely matched, the first wedge block 101 is directly or indirectly fixed to the gunpowder cover 8, and the second wedge block 102 is fixed to the sleeve 4 or the fixed barrel 9. In the displacement process after the explosion, the contact area of the two inclined planes is gradually increased, so that the buffer is realized, the movement limit position of the gunpowder cover 8 can be limited, and the reliability and the stability of the structure are improved.
In the embodiment, a plurality of lead screw transmission devices capable of preventing mechanical clamping are arranged in parallel. A plurality of parallelly connected, when a certain transmission takes place the jamming condition, can just break the transmission of jamming to protect other transmission, also can avoid the lead screw transmission of jamming to damage simultaneously, also can not be because of the unbalanced other troubles that lead to of output motion that a certain jamming leads to simultaneously, for example platform slope that leads to is out of balance in certain position among the platform elevating movement etc..
A control method of a lead screw transmission device capable of preventing mechanical jamming comprises the following steps:
detecting the torque, namely detecting the torque transmitted between the screw rod 1 and the nut 3 in real time;
and executing the step, when the torque is larger than 1.2 times to 1.5 times of the normal state, starting the electrifying head 802 to ignite the gunpowder.
In conclusion, the invention adopts a combined mode of the planetary roller 2 screw pair, the embedded lifting device and the firework explosion device, so that the mechanical connection on a force path can be quickly cut off under the condition that the planetary roller 2 screw pair is mechanically clamped in the interior, the force applied to the planetary roller 2 screw pair by an external load is released in time, the screw transmission device is greatly protected, and the system reliability is improved. The planetary roller 2 screw pair has novel concept and compact structure, can effectively prevent the mechanical jamming in the screw transmission device, and can effectively improve the application feasibility and safety of the planetary roller 2 screw pair in the electromechanical actuator. Specifically, when gunpowder explodes, high pressure is generated in the gunpowder chamber, the gunpowder cover 8 moves circumferentially, the transmission fixing piece 5 is tilted through the transmission connecting rod mechanism 7 by the gunpowder cover 8, so that transmission of the sleeve 4 and the nut 3 is eliminated, the sleeve 4 can rotate and move axially relative to the nut 3, and the transmission devices connected in parallel cannot be completely failed or damaged due to clamping stagnation of a certain screw rod 1. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A lead screw transmission device capable of preventing mechanical jamming is characterized by comprising:
the screw rod, the roller and the nut are matched to convert the rotary motion into linear motion;
the sleeve is movably sleeved on the nut;
the transmission fixing pieces are radially and movably inserted into the sleeve and the nut in sequence, and at least two transmission fixing pieces are arranged in the circumferential direction;
the elastic piece has a tendency of pushing the transmission fixing piece into the sleeve and the nut;
the powder charging device comprises a powder cover and a fixed barrel, wherein the fixed barrel is fixedly sleeved on the sleeve, the powder cover is movably sleeved and matched on the sleeve in a sealing mode, a powder charging chamber is formed between the powder cover and the fixed barrel, powder is charged in the powder charging chamber, and ignition can be controlled through an electrifying head;
and the transmission connecting rod mechanism is used for pulling the transmission fixing piece out of the nut, and when gunpowder in the gunpowder chamber explodes, the gunpowder cover moves circumferentially and drives the transmission connecting rod mechanism.
2. The lead screw transmission device capable of preventing mechanical jamming according to claim 1, wherein: the gunpowder cover is characterized by further comprising a gunpowder pin, wherein the gunpowder pin is used for locking the axial displacement of the gunpowder cover on the sleeve, one end of the gunpowder pin is fixed on the gunpowder cover, and the other end of the gunpowder pin is radially inserted into the sleeve.
3. The lead screw transmission device capable of preventing mechanical jamming according to claim 2, wherein: the gunpowder pins are also used for limiting circumferential rotation displacement of the gunpowder cover on the sleeve, and at least two gunpowder pins are arranged in the circumferential direction.
4. The lead screw transmission device capable of preventing mechanical jamming according to claim 1, wherein: the elastic piece is installed on the sleeve through the rear cover, the rear cover is fixed on the sleeve, one end of the elastic piece is installed on the inner wall of the rear cover, and the other end of the elastic piece is installed on the transmission fixing piece.
5. The lead screw transmission device capable of preventing mechanical jamming according to claim 4, wherein: the rear cover is provided with a hollow bolt, one end of the elastic piece is arranged in the hollow structure of the hollow bolt, and the other end of the elastic piece is sleeved on the boss at the end part of the transmission fixing piece.
6. The lead screw transmission device capable of preventing mechanical jamming according to claim 1, wherein: the transmission connecting rod mechanism comprises a turnover rod and a pull rod, wherein a turning head is arranged at one end of the turnover rod, the corner of the turning head is rotatably installed on a support lug, the tail end of the turning head is hinged to one end of the pull rod, the other end of the pull rod is directly or indirectly fixed with the gunpowder cover, the other end of the turnover rod is a free end, a clamping groove is formed in the transmission fixing piece, and the turnover rod is arranged in the clamping groove.
7. The lead screw transmission device capable of preventing mechanical jamming according to any one of claims 1 to 6, wherein: the buffer structure is a mechanical structure.
8. The lead screw transmission device capable of preventing mechanical jamming according to claim 7, wherein: the buffer structure comprises a first wedge-shaped block and a second wedge-shaped block, the inclined plane of the first wedge-shaped block is oppositely matched with the inclined plane of the second wedge-shaped block, the first wedge-shaped block is directly or indirectly fixed with the gunpowder cover, and the second wedge-shaped block is fixed with the sleeve or the fixed barrel.
9. The lead screw transmission device capable of preventing mechanical jamming according to any one of claims 1 to 6, wherein: a plurality of screw rod transmission devices capable of preventing mechanical clamping are arranged in parallel.
10. A control method of a screw drive device capable of preventing mechanical seizing according to any one of claims 1 to 9, comprising the steps of:
detecting the torque, namely detecting the torque transmitted between the screw rod and the nut in real time;
and executing the step, and starting the electrifying head to ignite the gunpowder when the torque is 1.2 to 1.5 times larger than that in the normal state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110194524.9A CN113007302B (en) | 2021-02-20 | 2021-02-20 | Screw rod transmission device capable of preventing mechanical jamming and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110194524.9A CN113007302B (en) | 2021-02-20 | 2021-02-20 | Screw rod transmission device capable of preventing mechanical jamming and control method thereof |
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| Publication Number | Publication Date |
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| CN113007302A true CN113007302A (en) | 2021-06-22 |
| CN113007302B CN113007302B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110194524.9A Active CN113007302B (en) | 2021-02-20 | 2021-02-20 | Screw rod transmission device capable of preventing mechanical jamming and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0258571A1 (en) * | 1986-08-11 | 1988-03-09 | SKF Nova AB | Irreversible screw and nut driving device |
| DE19916288A1 (en) * | 1999-04-12 | 2000-10-19 | Schaeffler Waelzlager Ohg | Automotive brake converts shaft rotary motion into axial motion combines compact outer dimensions with high load bearing factor |
| CN102900821A (en) * | 2012-06-28 | 2013-01-30 | 中国北方车辆研究所 | Planetary roller and lead screw pair |
| CN208578948U (en) * | 2018-07-18 | 2019-03-05 | 青岛丰光精密机械股份有限公司 | A kind of ball-screw prestressing mechanism |
| CN211039574U (en) * | 2019-10-29 | 2020-07-17 | 丽水市英特轴承有限公司 | Ball screw |
-
2021
- 2021-02-20 CN CN202110194524.9A patent/CN113007302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0258571A1 (en) * | 1986-08-11 | 1988-03-09 | SKF Nova AB | Irreversible screw and nut driving device |
| DE19916288A1 (en) * | 1999-04-12 | 2000-10-19 | Schaeffler Waelzlager Ohg | Automotive brake converts shaft rotary motion into axial motion combines compact outer dimensions with high load bearing factor |
| CN102900821A (en) * | 2012-06-28 | 2013-01-30 | 中国北方车辆研究所 | Planetary roller and lead screw pair |
| CN208578948U (en) * | 2018-07-18 | 2019-03-05 | 青岛丰光精密机械股份有限公司 | A kind of ball-screw prestressing mechanism |
| CN211039574U (en) * | 2019-10-29 | 2020-07-17 | 丽水市英特轴承有限公司 | Ball screw |
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| CN113007302B (en) | 2022-03-08 |
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