CN102462901B - Hydraulic expander with high primary stress - Google Patents

Hydraulic expander with high primary stress Download PDF

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Publication number
CN102462901B
CN102462901B CN201010550736.8A CN201010550736A CN102462901B CN 102462901 B CN102462901 B CN 102462901B CN 201010550736 A CN201010550736 A CN 201010550736A CN 102462901 B CN102462901 B CN 102462901B
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CN
China
Prior art keywords
arm
expansion
rod
hydraulic
pin
Prior art date
Application number
CN201010550736.8A
Other languages
Chinese (zh)
Other versions
CN102462901A (en
Inventor
杨勇
丁卫撑
袁珏
Original Assignee
成都理工大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 成都理工大学 filed Critical 成都理工大学
Priority to CN201010550736.8A priority Critical patent/CN102462901B/en
Publication of CN102462901A publication Critical patent/CN102462901A/en
Application granted granted Critical
Publication of CN102462901B publication Critical patent/CN102462901B/en

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Abstract

The invention discloses a hydraulic expander with high primary stress. The expander comprises an expansion arm, a clamping plate, a sleeve and a hydraulic cylinder, wherein the expansion arm is hinged with the clamping plate through a pin; and an arm handle is arranged at the other end of the expansion arm relative to an expansion head and is connected with a piston head of an oil cylinder through a connecting rod. When the expander is operated, the stressed direction of the arm handle pulled by the connecting rod and the motion direction of an oil cylinder piston form a large angle at the primary stage, so that extremely high component force can be generated to pull the arm handle; therefore, the expander can generate extremely high expansion force, so that the using performance of the hydraulic expander is greatly enhanced.

Description

Large starting force hydraulic spreader
Technical field
The present invention relates to a kind of fire-fighting hydraulic disengaging instrument, rescue and relief work while being applicable to fire generation, road traffic accident and other disastrous accidents.
Background technology
In earthquake relief work and other many rescue occasions, hydraulic spreader is a kind of very important rescue tool.But, the expansion action of existing hydraulic spreader is by hinged direct drive expansion arm inner side, to realize expansion action by the piston of hydraulic cylinder, there is no force-increasing mechanism, make its religion of original state strength in expansion little, greatly having affected the use function of hydraulic spreader, all there is this situation in the disclosed hydraulic spreader of Chinese patent literature CN2227545Y, CN2759692Y.
Summary of the invention
The object of the invention is: a kind of hydraulic spreader with large initial expansion power is provided.
Technical scheme of the present invention is: a kind of hydraulic spreader of large starting force, and this expander comprises expansion arm, clamping plate, sleeve, hydraulic cylinder, clamping plate are fixed on sleeve, and sleeve is fixed on hydraulic cylinder shell, and expansion arm is hinged by pin and clamping plate.Described expansion arm is expanded the other end of head relatively, and along the arm of expansion arm, carrying on the back extending direction has an arm handle.Described arm pommel portion is hinged by one end of pin and connecting rod, and the other end of connecting rod is hinged by pin and connector, and connector connects with piston head.During work, hydraulic cylinder promotes piston by input hydraulic oil, piston move through connector drivening rod, the component that connecting rod is produced pulls arm pommel portion, makes the rich pin of expansion arm to inner rotary, starts expansion action.
Adopt said structure, because connecting rod pulls the force direction that is subject to of arm handle, with the direction of motion of oil cylinder piston, in the starting stage, form large angle relation, therefore can produce very large component pulls arm handle, makes expander can produce very large expansionary force.
The invention has the beneficial effects as follows: this hydraulic spreader can provide very large initial expansion power.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the original state figure of the first embodiment of the present invention;
Fig. 2 is the expansion centre position state diagram of the first embodiment of the present invention;
Fig. 3 is the complete expansion state figure of the first embodiment of the present invention;
Fig. 4 is that the second of the present invention is implemented illustration.
Fig. 5 is initial expansion force analysis figure of the present invention.
Wherein: 1 expansion arm; 2 pins; 3 arm handles; 4 connecting rods; 5 pins; 6 pins; 7 clamping plate; 8 sleeves; 9 connect inner core; 10 piston heads; 11 hydraulic cylinders; 12 connectors.
The specific embodiment
Fig. 1 is a kind of specific embodiment of the present invention.In figure, expansion arm 1 includes arm handle 3, expansion arm 1 is hinged by pin 2 and clamping plate 7, clamping plate 7 are fixed on sleeve 8, sleeve 8 is fixed on the shell of hydraulic cylinder 11, arm handle 3 ends are hinged with one end of connecting rod 4 by pin 5, and the other end of connecting rod 4 is by pin 6 with to be connected inner core 9 front ends hinged, and connection inner core 9 rear ends are connected with piston head 10; Hydraulic cylinder 11 promotes piston by input hydraulic oil, the Sports band of the piston inner core 9 that is dynamically connected, connect inner core 9 drivening rods 4, the component that connecting rod 4 produces pulls arm handle 3 ends, make the rich pin 2 of expansion arm 1 to inner rotary, start expansion action, as shown in Figure 2, piston is further pushed ahead, and expansion arm 1 is further expanded.As shown in Figure 3, piston is further pushed ahead and is reached complete expansion state.Retracting piston or by oil cylinder springs return piston, just can make expansion arm reset by oil cylinder.
Fig. 4 is another kind of specific embodiment of the present invention.In figure, expansion arm 1 includes arm handle 3, expansion arm 1 is hinged by pin 2 and clamping plate 7, clamping plate 7 are fixed on sleeve 8, sleeve 8 is fixed on the shell of hydraulic cylinder 11, arm handle 3 ends are hinged with one end of connecting rod 4 by pin 5, and the other end of connecting rod 4 is hinged by pin 6 and connector 12, and connector 12 connects with piston head 10; Hydraulic cylinder 11 promotes piston by input hydraulic oil, piston move through connector 12, drivening rod 4, the component that connecting rod 4 is produced pulls arm handle 3 ends, makes the rich pin 2 of expansion arm 1 to inner rotary, starts expansion action.
Fig. 5 is the expansion force analysis figure of the present invention when initial.As shown in Figure 5, hydraulic cylinder piston head 10 thrust is forward F0, and connecting rod 4 pulls the component that expands arm handle 3 ends to be respectively F1 and F2, and the angle between F1 and F2 is α, and in the situation that F0 is constant, according to parallelogram of forces rule, α is larger, and F1 and F2 are larger.When expander starts to expand, α is very large, and therefore, hydraulic spreader of the present invention can obtain very large expansionary force in original state.

Claims (2)

1. a large starting force hydraulic spreader, comprise expansion arm (1), clamping plate (7), sleeve (8), hydraulic cylinder (11), it is characterized in that: clamping plate (7) are fixed on sleeve (8), sleeve (8) is fixed on hydraulic cylinder (11) shell, expansion arm (1) is hinged by pin (2) and clamping plate (7), this expansion arm (1) is the other end of expansion head relatively, arm back of the body extending direction along expansion arm (1) has an arm handle (3), described arm handle (3) end is hinged with one end of connecting rod (4) by pin (5), the other end of connecting rod (4) is hinged by pin (6) and connector (12), the same piston head of connector (12) (10) connects, hydraulic cylinder (11) promotes piston by input hydraulic oil, piston move through connector (12) drivening rod (4), the component that connecting rod (4) is produced pulls arm handle (3) end, make the rich pin (2) of expansion arm (1) to inner rotary, start expansion action, connecting rod (4) pulls the force direction that is subject to of arm handle (3) in the starting stage, to form large angle relation with the direction of motion of oil cylinder piston.
2. a kind of large starting force hydraulic spreader according to claim 1, is characterized in that: described connector (12) is for connecting inner core (9).
CN201010550736.8A 2010-11-19 2010-11-19 Hydraulic expander with high primary stress CN102462901B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010550736.8A CN102462901B (en) 2010-11-19 2010-11-19 Hydraulic expander with high primary stress

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010550736.8A CN102462901B (en) 2010-11-19 2010-11-19 Hydraulic expander with high primary stress

Publications (2)

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CN102462901A CN102462901A (en) 2012-05-23
CN102462901B true CN102462901B (en) 2014-09-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016111618A3 (en) * 2015-01-08 2016-09-01 N.V. Holmatro Rescue tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103723652A (en) * 2012-10-15 2014-04-16 崔晶光 Multifunctional hydraulic expansion type rescue device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409753A1 (en) * 1989-07-21 1991-01-23 Hydr'am Hydraulically driven spreader
CN2227545Y (en) * 1995-04-06 1996-05-22 宝鸡消防器材总厂高新技术开发公司 Hydraulic expanding apparatus
CN101670885A (en) * 2009-09-27 2010-03-17 华中科技大学 Hydraulic pressure expander
CN201906371U (en) * 2010-11-19 2011-07-27 成都理工大学 Hydraulic expander with large initial force

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409753A1 (en) * 1989-07-21 1991-01-23 Hydr'am Hydraulically driven spreader
CN2227545Y (en) * 1995-04-06 1996-05-22 宝鸡消防器材总厂高新技术开发公司 Hydraulic expanding apparatus
CN101670885A (en) * 2009-09-27 2010-03-17 华中科技大学 Hydraulic pressure expander
CN201906371U (en) * 2010-11-19 2011-07-27 成都理工大学 Hydraulic expander with large initial force

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016111618A3 (en) * 2015-01-08 2016-09-01 N.V. Holmatro Rescue tool
NL2014095A (en) * 2015-01-08 2016-09-23 N V Holmatro Rescue tool.

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Granted publication date: 20140917

Termination date: 20171119