CN103241692A - Pry lever with adjustable fulcrum - Google Patents
Pry lever with adjustable fulcrum Download PDFInfo
- Publication number
- CN103241692A CN103241692A CN2013101289955A CN201310128995A CN103241692A CN 103241692 A CN103241692 A CN 103241692A CN 2013101289955 A CN2013101289955 A CN 2013101289955A CN 201310128995 A CN201310128995 A CN 201310128995A CN 103241692 A CN103241692 A CN 103241692A
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- CN
- China
- Prior art keywords
- crowbar
- fulcrum
- supporting sleeve
- arm
- support casing
- 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.)
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Abstract
The invention belongs to the technical field of weight carrying tools and provides a pry lever with an adjustable fulcrum. The pry lever with the adjustable fulcrum is characterized in that a support casing is sleeved on a pry lever arm, a locking screw is arranged on the wall of the support casing, a protruded fastener matched with a fastener groove is arranged on the inner wall of the support casing, the locking screw, the fastener groove and the protruded fastener are mutually matched to prevent the support casing from moving on the pry lever arm, and a fulcrum foot is fixed below the support casing. Compared with the prior art, the pry lever provided with the fulcrum equivalently on its own can be used without looking for a fulcrum, thereby being wider in application range. The support casing can move and be locked on the pry lever arm by mutual matching of the locking screw, the fastener groove and the protruded fastener, firm connection between the fulcrum and the pry lever is guaranteed after locking, and no potential hazards exist since the fulcrum cannot fall off.
Description
Technical field
The invention belongs to weight handbarrow technical field, particularly a kind of crowbar with adjustable fulcrum.
Background technology
The crowbar of people's use generally is a steel rod, a suitable fulcrum to be sought in use and just the thing piece can be prized, yet under many circumstances because field condition is limited, be difficult for finding a suitable fulcrum, usually use replacements such as fragment of brick, stone, when prizing crowbar, such fulcrum easily caves in or slippage, and safety misadventure takes place.Especially under some deadly conditions as in earthquake, the typhoon rescue later or in the armament guarantee in Gobi desert, desert, engineering first-aid repair, can not find suitable crowbar fulcrum and not only can lose time but also may cause unnecessary property or human loss.
Summary of the invention
The technical scheme that the present invention takes for its technical matters of solution is, designs a kind of crowbar with adjustable fulcrum, and its structure comprises crowbar, and crowbar is made up of crowbar head and crowbar arm; Wherein establish recessed catching groove at described crowbar arm, and on the crowbar arm suit supporting sleeve, tube wall at supporting sleeve is established lock screw, establish the protruding button that matches with described recessed catching groove at the inwall of supporting sleeve, described lock screw, recessed catching groove and protruding button cooperatively interact and prevent that supporting sleeve is mobile at the crowbar arm, and the fulcrum pin is fixedly arranged below supporting sleeve;
Further, fix by threaded connector between described fulcrum pin and the supporting sleeve;
Further, described fulcrum pin is hinged on the threaded connector, and the phase-contact surface on fulcrum pin and ground is provided with anti-skidding line.
The invention has the beneficial effects as follows: 1. below traditional crowbar is set with, fixed the supporting sleeve of fulcrum pin, be equivalent to crowbar and carried fulcrum, do not needed to seek in addition fulcrum and both can use, thereby the Applicable scope of this novel crowbar is broader; 2. lock screw, recessed catching groove and protruding button cooperatively interact and can realize supporting sleeve mobile and locking at the crowbar arm, have been equivalent to guarantee firm connection the between fulcrum and the crowbar after the locking, and fulcrum can not come off, and does not have potential safety hazard; 3. adopt the mode of fixing by threaded connector between fulcrum pin and the supporting sleeve, can come the height by the lift adjustment fulcrum of bolt as required, easy to use; 4. the fulcrum pin is hinged on the threaded connector, and the phase-contact surface on fulcrum pin and ground is provided with anti-skidding line, further improves the comformability of this novel crowbar, flexible reliable and secure.
Description of drawings
Fig. 1 is integral structure scheme drawing of the present invention.
Fig. 2 is the enlarged drawing of A portion among Fig. 1.
Reference numeral: 1, crowbar, 1.1, the crowbar head, 1.2, the crowbar arm, 1.3, recessed catching groove,
2, supporting sleeve, 3, lock screw, 4, protruding button, 5, the fulcrum pin, 6, threaded connector.
The specific embodiment
Referring to Fig. 1, a kind of crowbar with adjustable fulcrum, its structure comprises crowbar 1, crowbar 1 is made up of crowbar head 1.1 and crowbar arm 1.2; Wherein establish recessed catching groove 1.3 at described crowbar arm 1.2, and on crowbar arm 1.2 suit supporting sleeve 2, establish lock screw 3 at the tube wall of supporting sleeve 2, establish the protruding button 4 that matches with described recessed catching groove 1.3 at the inwall of supporting sleeve 2, described lock screw 3, recessed catching groove 1.3 and protruding button 4 cooperatively interact and prevent that supporting sleeve 2 is mobile at crowbar arm 1.2, and fulcrum pin 5 is fixedly arranged below supporting sleeve 2; Described crowbar head 1.1 is wedge shape; Fixing by threaded connector 6 between described fulcrum pin 5 and the supporting sleeve 2; Described fulcrum pin 5 is hinged on the threaded connector 6, and fulcrum pin 5 is provided with anti-skidding line (not shown) with the phase-contact surface on ground, and described crowbar head is sphenocephaly.
The using method of a kind of crowbar with adjustable fulcrum of the present invention is as follows: when using crowbar to lever up object, unclamp lock screw 3 earlier, according to the object size, can regulate supporting sleeve 2 in front and back, make protruding button 4 buckle into recessed catching groove 1.3 after mixing up, tighten lock screw 3, height is regulated threaded connector 6, and the crowbar head 1.1 with crowbar after mixing up inserts under the object and can use.
Claims (3)
1. the crowbar with adjustable fulcrum comprises crowbar, and crowbar is made up of crowbar head and crowbar arm; It is characterized in that: establish recessed catching groove at described crowbar arm, and on the crowbar arm suit supporting sleeve, tube wall at supporting sleeve is established lock screw, establish the protruding button that matches with described recessed catching groove at the inwall of supporting sleeve, described lock screw, recessed catching groove and protruding button cooperatively interact and prevent that supporting sleeve is mobile at the crowbar arm, and the fulcrum pin is fixedly arranged below supporting sleeve.
2. a kind of crowbar with adjustable fulcrum as claimed in claim 1 is characterized in that: fix by threaded connector between described fulcrum pin and the supporting sleeve.
3. a kind of crowbar with adjustable fulcrum as claimed in claim 2, it is characterized in that: described fulcrum pin is hinged on the threaded connector, and the contact surface on fulcrum pin and ground is provided with anti-skidding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101289955A CN103241692A (en) | 2013-04-15 | 2013-04-15 | Pry lever with adjustable fulcrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101289955A CN103241692A (en) | 2013-04-15 | 2013-04-15 | Pry lever with adjustable fulcrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103241692A true CN103241692A (en) | 2013-08-14 |
Family
ID=48921609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101289955A Pending CN103241692A (en) | 2013-04-15 | 2013-04-15 | Pry lever with adjustable fulcrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103241692A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239783A (en) * | 2015-09-11 | 2016-01-13 | 方流生 | Water-cooled lifting device for building engineering |
| CN105731323A (en) * | 2016-02-29 | 2016-07-06 | 王本 | Crowbar |
| CN111747356A (en) * | 2019-03-29 | 2020-10-09 | 罗伯特·博世有限公司 | Crowbar accessory with adjustable fulcrum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797637A (en) * | 1997-02-21 | 1998-08-25 | Ervin; Scott P. | Roll mover and method of using |
| CN201240817Y (en) * | 2008-08-02 | 2009-05-20 | 李新民 | Triangular hoisting jack |
| CN201873496U (en) * | 2010-11-16 | 2011-06-22 | 胡业喜 | Crow bar with adjustable supporting point |
| CN202669770U (en) * | 2012-07-03 | 2013-01-16 | 徐工集团工程机械股份有限公司 | Vehicle sliding outrigger and wrecker |
| CN103027488A (en) * | 2011-09-29 | 2013-04-10 | 梁诗琦 | Height adjustable chair for pupil |
| CN203269502U (en) * | 2013-04-15 | 2013-11-06 | 河南省电力公司驻马店供电公司 | Pry bar with adjustable fulcrum |
-
2013
- 2013-04-15 CN CN2013101289955A patent/CN103241692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797637A (en) * | 1997-02-21 | 1998-08-25 | Ervin; Scott P. | Roll mover and method of using |
| CN201240817Y (en) * | 2008-08-02 | 2009-05-20 | 李新民 | Triangular hoisting jack |
| CN201873496U (en) * | 2010-11-16 | 2011-06-22 | 胡业喜 | Crow bar with adjustable supporting point |
| CN103027488A (en) * | 2011-09-29 | 2013-04-10 | 梁诗琦 | Height adjustable chair for pupil |
| CN202669770U (en) * | 2012-07-03 | 2013-01-16 | 徐工集团工程机械股份有限公司 | Vehicle sliding outrigger and wrecker |
| CN203269502U (en) * | 2013-04-15 | 2013-11-06 | 河南省电力公司驻马店供电公司 | Pry bar with adjustable fulcrum |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239783A (en) * | 2015-09-11 | 2016-01-13 | 方流生 | Water-cooled lifting device for building engineering |
| CN105731323A (en) * | 2016-02-29 | 2016-07-06 | 王本 | Crowbar |
| CN111747356A (en) * | 2019-03-29 | 2020-10-09 | 罗伯特·博世有限公司 | Crowbar accessory with adjustable fulcrum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130814 |
|
| RJ01 | Rejection of invention patent application after publication |