CN202777499U - Door-opening expander - Google Patents
Door-opening expander Download PDFInfo
- Publication number
- CN202777499U CN202777499U CN 201220492754 CN201220492754U CN202777499U CN 202777499 U CN202777499 U CN 202777499U CN 201220492754 CN201220492754 CN 201220492754 CN 201220492754 U CN201220492754 U CN 201220492754U CN 202777499 U CN202777499 U CN 202777499U
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- Prior art keywords
- arm
- expansion
- expander
- angle
- door
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Abstract
The utility model provides a door-opening expander which comprises two triangular expanding arms and a hydraulic cylinder, wherein the hydraulic cylinder comprises a fixing sleeve and a piston rod, one end of the piston rod is located in the fixing sleeve, the other end of the piston rod is fixed with a connecting piece, a first angle of each triangular expanding arm is an expanding head, a second angle of each triangular expanding arm is connected with the connecting piece through a pin, and a third angle of each triangular expanding arm is connected with the fixing sleeve through one connecting rod. The door-expanding expander has the advantages that initial expansionary force of the expander is increased, but the size and the weight of the expander are not increased accordingly, and the expander is small, exquisite and light; and the door-expanding expander is simple in structure, convenient to maintain, low in manufacturing cost and the like.
Description
Technical field
The utility model relates to a kind of expander that opens the door.
Background technology
In the current building structure, the theftproof performance of door and window is more and more perfect, brings very large inconvenience for when the disaster relief expansion door and window.Thereby open door by force in a kind of utensil insertion door and window slit with certain the planning function of objective requirement.Expander has on market already, pry open fast the requirement of door and window along with public security, both at home and abroad some manufacturer production a kind of small-sized expander, but about initial opening force 10kN, maximum extension is to about the 30kN, expansion stroke 100mm, the greatest weakness of this expansion is that initial expansion power is too little, is unsuitable for opening the door and window of larger resistance.Traditional expander structural principle causes its initial expansion power little, and along with expansion distance increases, expansionary force increases.If increase initial expansion power, cause the expander volume to increase, weight increases, inapplicable small volume and less weight requirement.
Summary of the invention
The purpose of this utility model provides large, the safe and reliable expander that opens the door of a kind of initial expansion power.
The technical solution of the utility model is: expander opens the door, comprise leg-of-mutton two expansion arm and hydraulic cylinder, described hydraulic cylinder comprises fixed muffle and piston rod, one end of described piston rod is positioned at described fixed muffle, the other end is fixed with a connector, is positioned at outside the described fixed muffle, and an angle of described triangle expansion arm is the expansion head, second angle is connected with described connector by pin, and the 3rd angle is connected with described fixed muffle by connecting rod;
The active arm of force a of described expansion arm is the 3rd horizontal range that end, angle C is ordered from pin position B point to expansion arm, be the 3rd vertical range that end, angle C is ordered from the expansion A point of expansion arm to expansion arm by power arm b, the ratio of this arm of force that arm of force coefficient is expander this arm of force when closed when opening up into maximum, initiatively the variation coefficient of arm of force a is with by the difference of the variation coefficient of power arm b≤0.05.
Advantage and the good effect that the utlity model has are:
Owing to adopt technique scheme, the initial expansion power change of expander is large, and therefore volume and weight does not become greatly, small volume and less weight; Have simple in structure, easy to maintenance, the advantage such as processing cost is low.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model expansion arm when opening.
Among the figure:
1, expansion arm 2, fixed muffle 3, piston rod 4, connector
5, connecting rod
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and the specific embodiments.
As depicted in figs. 1 and 2, the utility model comprises leg-of-mutton two expansion arm 1 and hydraulic cylinder, described hydraulic cylinder comprises fixed muffle 2 and piston rod 3, one end of described piston rod 3 is positioned at described fixed muffle 2, the other end is fixed with a connector 4, an angle of described triangle expansion arm 1 is the expansion head, and second angle is connected with described connector 4 by pin, and the 3rd angle is connected with described fixed muffle 2 by connecting rod 5.The active arm of force a of described expansion arm 1 is the 3rd horizontal range that end, angle C is ordered from pin position B point to expansion arm 1, be the 3rd vertical range that end, angle C is ordered from the expansion A point of expansion arm 1 to expansion arm 1 by power arm b, the ratio of this arm of force that arm of force coefficient is expander this arm of force when closed when opening up into maximum, initiatively the variation coefficient of arm of force a is with by the difference of the variation coefficient of power arm b≤0.05.
In use, initial expansion power of the present utility model reaches 40kN, and maximum extension power also is controlled at about 40kN, so just can not cause volume to enlarge and the weight increase.The utility model small volume and less weight, initial expansion power reach pries open the larger door and window requirement of resistance.
Above embodiment has been described in detail the utility model, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (1)
1. expander opens the door, comprise leg-of-mutton two expansion arm (1) and hydraulic cylinder, it is characterized in that: described hydraulic cylinder comprises fixed muffle (2) and piston rod (3), one end of described piston rod (3) is positioned at described fixed muffle (2), the other end is fixed with a connector (4), be positioned at outside the described fixed muffle (2), an angle of described triangle expansion arm (1) is the expansion head, second angle is connected with described connector (4) by pin, and the 3rd angle is connected with described fixed muffle (2) by connecting rod (5);
The active arm of force a of described expansion arm (1) is the 3rd horizontal range that end, angle C is ordered from pin position B point to expansion arm (1), be the 3rd vertical range that end, angle C is ordered from the expansion A point of expansion arm (1) to expansion arm (1) by power arm b, the ratio of this arm of force that arm of force coefficient is expander this arm of force when closed when opening up into maximum, initiatively the variation coefficient of arm of force a is with by the difference of the variation coefficient of power arm b≤0.05.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492754 CN202777499U (en) | 2012-09-22 | 2012-09-22 | Door-opening expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492754 CN202777499U (en) | 2012-09-22 | 2012-09-22 | Door-opening expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202777499U true CN202777499U (en) | 2013-03-13 |
Family
ID=47804855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220492754 Expired - Fee Related CN202777499U (en) | 2012-09-22 | 2012-09-22 | Door-opening expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202777499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768741A (en) * | 2014-01-10 | 2014-05-07 | 桂林电子科技大学 | Hydraulic driven space expansion device |
-
2012
- 2012-09-22 CN CN 201220492754 patent/CN202777499U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768741A (en) * | 2014-01-10 | 2014-05-07 | 桂林电子科技大学 | Hydraulic driven space expansion device |
| CN103768741B (en) * | 2014-01-10 | 2016-01-13 | 桂林电子科技大学 | Hydraulically powered volume expansions device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20190922 |