CN201794420U - Shifting fork structure used on lead screw nut pair transmission system - Google Patents
Shifting fork structure used on lead screw nut pair transmission system Download PDFInfo
- Publication number
- CN201794420U CN201794420U CN2010205206671U CN201020520667U CN201794420U CN 201794420 U CN201794420 U CN 201794420U CN 2010205206671 U CN2010205206671 U CN 2010205206671U CN 201020520667 U CN201020520667 U CN 201020520667U CN 201794420 U CN201794420 U CN 201794420U
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- CN
- China
- Prior art keywords
- shifting fork
- lead screw
- nut pair
- shift fork
- nut
- 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 - Lifetime
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Abstract
The utility model discloses a shifting fork structure used on a lead screw nut pair transmission system. The shifting fork structure is characterized by comprising a shifting fork, a pin shaft, a sliding bearing, a hinge plate, a bearing trolley, a lead screw and a nut pair, wherein the shifting fork is connected with the nut pair arranged on the lead screw, the hinge plate is connected with the bearing trolley, and the shifting fork is connected with the hinge plate through the pin shaft and the sliding bearing. The shifting fork structure has the advantage of reliability, namely axial total run-out exists in lead screw nut transmission, and the shifting fork structure effectively eliminates the influence of the axial total run-out on the motion of door leaves through the clearance between the shifting fork and the nut pair and bearing connection between the shifting fork and the hinge plate. The shifting fork structure has the advantage of simplicity, namely the shifting fork has a simple structure, and the shifting fork is in bevel contact with the nut pair. When the door leaves are arranged obliquely, the shifting fork with an adjusting space can eliminate the inclination angles of the door leaves so as to ensure normal installation. The shifting fork can effectively eliminate the axial total run-out in the lead screw nut transmission process and effectively eliminate the influence of the inclination angles of the door leaves in the installation process.
Description
Technical field
The utility model relates to a kind of shift fork structure that is used on the feed screw nut pair transmission system, be used for rolling stock door, safety door, shield door and civilian door with the transmission mechanism of feed screw nut's auxiliary driving as the kind of drive.Belong to door leaf driving mechanism technical field.
Background technology
Advantage is widely used in the straight line transmission field to feed screw nut's auxiliary driving so that its stable drive, precision height, noise be low etc.But because the restriction of feed screw nut's machining accuracy, the radially total run-out in the screw mandrel transmission process is still unavoidable problem.For the door leaf mechanism that uses feed screw nut's auxiliary driving, being rigidly connected between feed screw nut pair and the door leaf makes the shake when directly being presented as the door leaf switch of beating of screw mandrel.For addressing the above problem, main both at home and abroad at present the employing improved screw mandrel, pair of nut machining accuracy, increased method such as damping device reduce radially total run-out influence that door leaf is moved of screw mandrel between being rigidly connected of door leaf and screw mandrel.Because the raising of machining accuracy, increase damping device have not only increased manufacturing cost, and increased the product installation difficulty, also the scene of being not easy to is changed.
Summary of the invention
The utility model proposes a kind of syndeton that is used on the feed screw nut pair transmission system, its purpose is intended to overcome the above-mentioned defective that prior art is deposited, have simple in structure, stable and reliable working performance, and be integrated a kind of.
Technical solution of the present utility model: its structure is to comprise: shift fork, bearing pin, sliding bearing, flap, carrying dolly, screw mandrel, pair of nut, wherein shift fork is connected with pair of nut on being located at screw mandrel, flap is connected with the carrying dolly, is connected with sliding bearing by bearing pin between shift fork and the flap.
Advantage of the present utility model: reliable: have radially total run-out during feed screw nut's transmission, this shift fork structure is connected with bearing between the flap by the gap between shift fork and the pair of nut and shift fork, has effectively eliminated the influence that radially total run-out is moved to door leaf.Simply: shift fork is simple in structure, and shift fork is that the inclined-plane contacts with pair of nut.When door leaf was installed the existence inclination, shift fork had the adjusting space, can eliminate the angle of inclination of door leaf, guarantees normal mounting.Shift fork can effectively be eliminated the radially total run-out in feed screw nut's transmission process, can effectively eliminate the influence that there is the angle of inclination in door leaf in the installation process.
Description of drawings
Accompanying drawing 1 is a kind of shift fork structural representation that is used on the feed screw nut pair transmission system.
Accompanying drawing 2 is a kind of shift fork structure end view that are used on the feed screw nut pair transmission system.
Among the figure 1 is shift fork, the 2nd, bearing pin, the 3rd, sliding bearing, the 4th, flap, the 5th, carrying dolly, the 6th, screw mandrel, the 7th, pair of nut.
The specific embodiment
Described shift fork 1 is the member that is stuck on pair of nut 7 outer rings, shift fork 1 and pair of nut 7 outer ring matched in clearance; Along the door leaf direction of motion, shift fork 1 is stuck in pair of nut 7 water jackets, and contacts for the inclined-plane with pair of nut 7.
Along the door leaf direction of motion, shift fork 1 and pair of nut 7 be for the inclined-plane contacts, and installs when existing to tilt when door leaf, and shift fork has the adjusting space, can eliminate the angle of inclination of door leaf, guarantees normal mounting.
Claims (2)
1. shift fork structure that is used on the feed screw nut pair transmission system, it is characterized in that comprising: shift fork, bearing pin, sliding bearing, flap, carrying dolly, screw mandrel, pair of nut, wherein shift fork is connected with pair of nut on being located at screw mandrel, flap is connected with the carrying dolly, is connected with sliding bearing by bearing pin between shift fork and the flap.
2. a kind of shift fork structure that is used on the feed screw nut pair transmission system according to claim 1 is characterized in that shift fork and pair of nut are that the inclined-plane contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205206671U CN201794420U (en) | 2010-09-08 | 2010-09-08 | Shifting fork structure used on lead screw nut pair transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205206671U CN201794420U (en) | 2010-09-08 | 2010-09-08 | Shifting fork structure used on lead screw nut pair transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794420U true CN201794420U (en) | 2011-04-13 |
Family
ID=43849335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205206671U Expired - Lifetime CN201794420U (en) | 2010-09-08 | 2010-09-08 | Shifting fork structure used on lead screw nut pair transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794420U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233657A (en) * | 2012-10-24 | 2013-08-07 | 南京康尼机电股份有限公司 | Hidden sealed door for railway vehicle |
| CN103243999A (en) * | 2013-06-06 | 2013-08-14 | 江苏申阳电梯部件有限公司 | Transmission mechanism of electric-control electrocar door |
| CN103723155A (en) * | 2013-12-31 | 2014-04-16 | 南京康尼机电股份有限公司 | Higher pair connecting mechanism for driving sliding door through lead screw nut of urban rail vehicle |
| CN110601437A (en) * | 2019-09-05 | 2019-12-20 | 无锡艾尔特线性运动机械有限公司 | Electric push rod device |
-
2010
- 2010-09-08 CN CN2010205206671U patent/CN201794420U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233657A (en) * | 2012-10-24 | 2013-08-07 | 南京康尼机电股份有限公司 | Hidden sealed door for railway vehicle |
| CN103233657B (en) * | 2012-10-24 | 2016-08-24 | 南京康尼机电股份有限公司 | A kind of built-in sealed door of rail vehicle |
| CN103243999A (en) * | 2013-06-06 | 2013-08-14 | 江苏申阳电梯部件有限公司 | Transmission mechanism of electric-control electrocar door |
| CN103723155A (en) * | 2013-12-31 | 2014-04-16 | 南京康尼机电股份有限公司 | Higher pair connecting mechanism for driving sliding door through lead screw nut of urban rail vehicle |
| CN103723155B (en) * | 2013-12-31 | 2016-11-16 | 南京康尼机电股份有限公司 | A kind of city railway vehicle feed screw nut drives the higher pair bindiny mechanism of sliding door |
| CN110601437A (en) * | 2019-09-05 | 2019-12-20 | 无锡艾尔特线性运动机械有限公司 | Electric push rod device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |