CN201666341U - Travel limiting structure for blocking rotor of electric pushrod machine - Google Patents
Travel limiting structure for blocking rotor of electric pushrod machine Download PDFInfo
- Publication number
- CN201666341U CN201666341U CN2010201071251U CN201020107125U CN201666341U CN 201666341 U CN201666341 U CN 201666341U CN 2010201071251 U CN2010201071251 U CN 2010201071251U CN 201020107125 U CN201020107125 U CN 201020107125U CN 201666341 U CN201666341 U CN 201666341U
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- stall
- circle
- blocking ring
- rod
- stall circle
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- Expired - Fee Related
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Abstract
The utility model relates to a travel limiting structure for blocking a locked rotor of an electric pushrod machine. The travel limiting structure comprises a speed reducer. The speed reducer is connected with a lead screw, the lead screw is connected with a lead screw nut and the lead screw nut is connected with a rod body. The travel limiting structure is characterized in that a first left rotor blocking ring is fixed at the front end of the rod body through a pressing plate, a second left rotor blocking ring is fixed between the rod body and the lead screw nut, a first right rotor blocking ring is fixed between the lead screw and the rear side wall of a pushrod seat, a second right rotor blocking ring is fixed on the rear side of the lead screw nut, each of the first left rotor blocking ring, the second left rotor blocking ring, the first right rotor blocking ring and the second right rotor blocking ring comprises a rotor blocking ring body and convex teeth arranged on the rotor blocking ring body, the convex teeth of the first left rotor blocking ring are fastened with the convex teeth of the second left rotor blocking ring, and the convex teeth of the first right rotor blocking ring are fastened with the convex teeth of the second right rotor blocking ring. Since the convex teeth of the rotor blocking rings are fastened at extreme positions to realize limiting, the utility model has the advantages of higher limiting reliability and better pushrod recoverability.
Description
Technical field
The utility model relates to the stroke limit structure of a kind of electric pushrod machinery stall, is used to prevent feed screw nut's roof fall and causes push rod and even equipment failure, belongs to the electric pushrod technical field.
Background technique
As shown in Figure 1, stroke limit structural representation for traditional electric pushrod machinery stall, the stroke limit structure of described electric pushrod machinery stall comprises speed reducer 11, the shell of speed reducer 11 connects ram seat 9, ram seat 9 connects overcoat 5, overcoat 5 one ends are provided with overcoat door 3, speed reducer 11 connects screw mandrel 7, screw mandrel 7 connecting filament stem nuts 10, feed screw nut 10 is by land 8 connecting-rod bodies 6, and the body of rod 6 one ends stretch out from overcoat door 3 and are provided with rod end stifle 2, rod end stifle 2 connects joint shaft bearing 1, be provided with positioning ring 12 between screw mandrel 7 and the ram seat 9, be provided with right block 13 between positioning ring 12 and the feed screw nut 10, overcoat door 3 inboards are provided with left block 4.Electric pushrod provides power by speed reducer 11, drives screw mandrel 7 rotations, and screw mandrel 7 rotations promote feed screw nut 10 body of rod 6 is released or regained.Change into straight line motion thereby realizing to rotatablely move.Release or regain general electric limit switch or the mechanical block of adopting of two limit positions at the body of rod 6 and realize stroke limit, in case feed screw nut's 10 roof falls.Because the thrust of the body of rod 6 is bigger, block lost efficacy easily and also screw mandrel 7 and feed screw nut 10 collided the back easily interlock be difficult for backhaul, cause the equipment downtime fault.And that malfunctioning rate of fault very easily takes place in electric limit switch is higher.
Summary of the invention
The purpose of this utility model provides a kind of stroke limit structure of stabilizing effective electric pushrod machinery stall.
In order to achieve the above object, the technical solution of the utility model provides a kind of stroke limit structure of electric pushrod machinery stall, comprise speed reducer, the front side shell of speed reducer connects ram seat, the ram seat front side connects overcoat, the overcoat front end is provided with the overcoat door, speed reducer connects screw mandrel, screw mandrel connecting filament stem nut, feed screw nut's connecting-rod body, lever front end stretches out from the overcoat door and is provided with the rod end stifle, the rod end stifle connects joint shaft bearing, it is characterized in that the first left stall circle is fixed on lever front end by pressing plate, the second left stall circle is fixed between the body of rod and the feed screw nut, the first right stall circle is fixed between screw mandrel and the ram seat rear sidewall, and feed screw nut's rear side is fixed with the second right stall circle, the described first left stall circle, the second left stall circle, the first right stall circle and the second right stall circle all comprise stall circle body and protruding tooth provided thereon, the protruding tooth of the first left stall circle and the second left stall circle is interlocked, and the protruding tooth of the first right stall circle and the second right stall circle is interlocked.
The thrust of push rod is bigger, but its moment of torsion that rotates its screw mandrel is less relatively, as promptly having realized screw mandrel and feed screw nut's stall (being that the two does not produce relative rotation) spacing in the extreme limit of travel position.Because driving torque is less, it is just easier that screw mandrel and feed screw nut are difficult for killing answer, makes push rod use unlikely inefficacy under any operating mode situation.The protruding tooth that the utility model utilizes the stall circle interlocks at limit position and realizes spacingly, makes that spacing reliability is higher, and the recoverability of push rod is better
Description of drawings
Fig. 1 is the stroke limit structural representation of traditional electric pushrod machinery stall;
Fig. 2 is the stroke limit structural representation of electric pushrod machinery stall of the present utility model;
Fig. 3 is the first left stall circle schematic representation;
Fig. 4 is the second left stall circle schematic representation;
Fig. 5 is the first right stall circle schematic representation;
Fig. 6 is the second right stall circle schematic representation.
Embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 2, be the stroke limit structural representation of electric pushrod machinery stall of the present utility model, the stroke limit structure of described electric pushrod machinery stall is made up of joint shaft bearing 1, rod end stifle 2, overcoat door 3, overcoat 5, the body of rod 6, screw mandrel 7, ram seat 9, feed screw nut 10, speed reducer 11, first left stall circle 20, second left stall circle 19, first right stall circle 14, the second right stall circle 15 and pressing plate 16.
The front side shell of speed reducer 11 connects ram seat 9, ram seat 9 front sides connect overcoat 5, overcoat 5 front ends are provided with overcoat door 3, speed reducer 11 connects screw mandrel 7, screw mandrel 7 connecting filament stem nuts 10, feed screw nut's 10 connecting-rod bodies 6, the body of rod 6 front ends stretch out from overcoat door 3 and are provided with rod end stifle 2, rod end stifle 2 connects joint shaft bearing 1, as shown in Figure 3, it is the first left stall circle schematic representation, the first left stall circle 20 is fixed on the body of rod 6 front ends by pressing plate 16, as shown in Figure 4, it is the second left stall circle schematic representation, the second left stall circle 19 is fixed between the body of rod 6 and the feed screw nut 10, as shown in Figure 5, it is the first right stall circle schematic representation, one right stall circle 14 is fixed between screw mandrel 7 and ram seat 9 rear sidewalls, as shown in Figure 6, be the second right stall circle schematic representation, feed screw nut's 10 rear sides are fixed with the second right stall circle 15, the described first left stall circle 20, the second left stall circle 19, the first right stall circle 14 and the second right stall circle 15 all comprise stall circle body 17 and protruding tooth 18 provided thereon, the protruding tooth 18 of the first left stall circle 20 and the second left stall circle 19 is interlocked, and the protruding tooth 18 of the first right stall circle 14 and the second right stall circle 15 is interlocked.
The utility model is by reequiping on the stop location of common electric pushrod with the stifled circle of the machinery of protruding tooth and can realizing.
During use, speed reducer 11 will drive screw mandrel 7 rotations, and screw mandrel 7 rotations promote feed screw nut 10 body of rod 6 is released or regained.When the body of rod 6 extend out to left lateral way limit position, the protruding tooth 18 on the second left stall circle 20 and the protruding tooth 18 of the first left stall circle 19 interlocked, and screw mandrel 7 is with feed screw nut's 10 stalls and spacing.And when the body of rod 6 was recycled to right lateral way limit position, the protruding tooth 18 on the second right stall circle 15 and the protruding tooth 18 of the first right stall circle 14 interlocked, and screw mandrel 7 is with feed screw nut's 10 stalls and spacing.
Claims (1)
1. the stroke limit structure of electric pushrod machinery stall, comprise speed reducer (11), the front side shell of speed reducer (11) connects ram seat (9), ram seat (9) front side connects overcoat (5), overcoat (5) front end is provided with overcoat door (3), speed reducer (11) connects screw mandrel (7), screw mandrel (7) connecting filament stem nut (10), feed screw nut (10) connecting-rod body (6), the body of rod (6) front end stretches out from overcoat door (3) and is provided with rod end stifle (2), rod end stifle (2) connects joint shaft bearing (1), it is characterized in that, the first left stall circle (20) is fixed on the body of rod (6) front end by pressing plate (16), the second left stall circle (19) is fixed between the body of rod (6) and the feed screw nut (10), the first right stall circle (14) is fixed between screw mandrel (7) and ram seat (9) rear sidewall, feed screw nut (10) rear side is fixed with the second right stall circle (15), the described first left stall circle (20), the second left stall circle (19), the first right stall circle (14) and the second right stall circle (15) all comprise stall circle body (17) and protruding tooth (18) provided thereon, the protruding tooth (18) of the first left stall circle (20) and the second left stall circle (19) is interlocked, and the protruding tooth (18) of the first right stall circle (14) and the second right stall circle (15) is interlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201071251U CN201666341U (en) | 2010-02-03 | 2010-02-03 | Travel limiting structure for blocking rotor of electric pushrod machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201071251U CN201666341U (en) | 2010-02-03 | 2010-02-03 | Travel limiting structure for blocking rotor of electric pushrod machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666341U true CN201666341U (en) | 2010-12-08 |
Family
ID=43267301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201071251U Expired - Fee Related CN201666341U (en) | 2010-02-03 | 2010-02-03 | Travel limiting structure for blocking rotor of electric pushrod machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666341U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307246A (en) * | 2013-07-02 | 2013-09-18 | 北京联合大学 | Stroke-adjustable push rod mechanism |
| CN104828757A (en) * | 2015-05-20 | 2015-08-12 | 浙江捷昌线性驱动科技股份有限公司 | Manual and electric push rod |
| CN105245053A (en) * | 2015-11-18 | 2016-01-13 | 内蒙古包钢钢联股份有限公司 | Self-limiting electric push rod |
| CN109372372A (en) * | 2018-11-30 | 2019-02-22 | 广东东箭汽车科技股份有限公司 | Rotation-clogging protection device and electric tail gate strut |
-
2010
- 2010-02-03 CN CN2010201071251U patent/CN201666341U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307246A (en) * | 2013-07-02 | 2013-09-18 | 北京联合大学 | Stroke-adjustable push rod mechanism |
| CN104828757A (en) * | 2015-05-20 | 2015-08-12 | 浙江捷昌线性驱动科技股份有限公司 | Manual and electric push rod |
| CN104828757B (en) * | 2015-05-20 | 2018-07-13 | 浙江捷昌线性驱动科技股份有限公司 | A kind of manually, electrically dual-purpose type push rod |
| CN105245053A (en) * | 2015-11-18 | 2016-01-13 | 内蒙古包钢钢联股份有限公司 | Self-limiting electric push rod |
| CN109372372A (en) * | 2018-11-30 | 2019-02-22 | 广东东箭汽车科技股份有限公司 | Rotation-clogging protection device and electric tail gate strut |
| CN109372372B (en) * | 2018-11-30 | 2020-08-11 | 广东东箭汽车科技股份有限公司 | Locked-rotor protection device and electric tail gate stay bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20190203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |