CN201338926Y - Piston unloading fingernail-type hoisting jack - Google Patents
Piston unloading fingernail-type hoisting jack Download PDFInfo
- Publication number
- CN201338926Y CN201338926Y CNU2009201123893U CN200920112389U CN201338926Y CN 201338926 Y CN201338926 Y CN 201338926Y CN U2009201123893 U CNU2009201123893 U CN U2009201123893U CN 200920112389 U CN200920112389 U CN 200920112389U CN 201338926 Y CN201338926 Y CN 201338926Y
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- China
- Prior art keywords
- piston
- oil storage
- storage cylinder
- pawl formula
- guide rail
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Abstract
The utility model discloses a piston unloading claw-type jack. The claw-type jack comprises a base; an oil storage cylinder and a 270-degree rotary-rocker drive mechanism; a piston is penetrated into the oil storage cylinder; an L-shaped claw body is arranged at one side of the oil storage cylinder; the upper end of the piston stretches out of the top part of the oil storage cylinder and is connected with a top plate of the claw body; the vertical section of the claw body is slidingly connected with the side wall of the oil storage cylinder by arranging dovetail sliding-rail mechanisms that are meshed with each other, therefore, the structural design is reasonable and novel. The sliding-rail mechanisms unload the radial acting force when the piston is in use, so that the piston can only bear the rising force, thereby ensuring the working efficiency of the piston unloading claw-type jack as well as the stability and service life of other components in the claw-type jack.
Description
Technical field
The utility model relates to the jack field, particularly piston off-load pawl formula jack.
Background technology
Compare with ordinary jack, the Applicable scope of pawl formula jack is bigger, pawl formula jack is made up of parts such as body, claw, joysticks respectively, be that a kind of double high-order jacking and low level jacking are the jack of one, joystick can 270 the degree rotation, use when being applicable to the jacking weight height that narrow and small occasion and general jack can't finish, claw is the one-body molded or welding fabrication of alloy steel casting, structure is strong, is applicable to the low level jacking, and use with the high-order jacking of ordinary jack at the top.
Pawl formula jack is different from ordinary jack, its characteristics are the low level jacking ability of claw, jack top load-carrying capacity F, and the claw load-carrying capacity is 1/2 of a top load-carrying capacity, be 1/2F, but in the prior art, do not eliminate the defective that this structure is brought, when claw carries, bearing capacity and body lifting piston application force be not on same line, form overturning couple, and make piston carrying diametral load, guide ring in the crooked extrusion piston cylinder of piston carrying diametral load, poted assemblives such as oil sealing, poted assemblies was lost efficacy or leakage of oil, or influencing body service life, more serious meeting causes guide ring, lift cylinders or base distortion, the up and down clamping stagnation of piston destroys whole body.Some manufacturing enterprise is in order to remedy above defective, all made lengthening at aspects such as guide rings or strengthen, but the irrationality of structure increased productive costs, and failed fundamentally to solve the deficiency of existence.
Summary of the invention
Problem to be solved in the utility model just provides a kind of piston off-load pawl formula jack of reasonable in design novelty, can unloading hinder the radial effect power that piston rises, guarantee the advantage of the stressed science of piston off-load pawl formula jack low level jacking, can improve the stability and the service life of its work efficiency and inner other assemblies of assurance again.
In order to solve the problems of the technologies described above, the utility model is achieved like this: piston off-load pawl formula jack, comprise base, base is provided with oil storage cylinder and Rocker Driving Mechanism, wear piston in the oil storage cylinder, oil storage cylinder one side is provided with corpus unguis, the piston upper end is stretched out the oil storage cylinder top and is connected with the corpus unguis top board, corpus unguis vertically section and oil storage cylinder sidewall by the sliding track mechanism sliding block joint of mutual interlock is set, sliding track mechanism has uninstalled the radial effect power of piston, thereby has guaranteed the stability and the service life of piston and inner other assemblies of pawl formula jack.
Further, described corpus unguis side is L shaped.
Further, described sliding track mechanism comprises the guide rail that vertically is arranged on the oil storage cylinder sidewall and is opened in the vertically last and cooresponding chute of guide rail of section of corpus unguis.
As preferably, described Rocker Driving Mechanism can be done 270 ° of rotations around pivot arm.
As preferably, the cross-sectional plane of described guide rail and chute is a dovetail shaped.
As preferably, guide rail and oil storage cylinder and base are welded as a whole.
As preferably, guide rail adopts superior alloy steel to make.
Adopted technique scheme, the utility model is by being provided with the dovetail shaped sliding track mechanism of mutual interlock between oil storage cylinder and corpus unguis, when corpus unguis is risen under condition of loading, upset moment of torsion because of bearing capacity and the generation of piston disalignment, by the dovetail shaped chute, be delivered to guide rail, same guide rail, oil storage cylinder, support decompose carrying.Cooperate because of piston and corpus unguis top board are free, piston only carries raising force, thereby has unloaded the diametral load of piston, has reached purpose, both guarantee the advantage of the stressed science of pawl formula jack low level jacking, guaranteed the stability and the service life of inner other assemblies of its work efficiency and pawl formula jack again.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the utility model inner structure scheme drawing;
Fig. 2 is the birds-eye view of Fig. 1.
The specific embodiment
Piston off-load pawl formula jack as shown in Figure 1, comprise base 1, base 1 is provided with oil storage cylinder 2 and can makes the Rocker Driving Mechanism 3 of 270 ° of rotations around pivot arm 31, wear piston 21 in the oil storage cylinder 2, oil storage cylinder one side is provided with L shaped corpus unguis 4, piston 21 upper ends are stretched out oil storage cylinder 2 tops and are connected with corpus unguis top board 42 is free, being vertically arranged with cross-sectional plane on oil storage cylinder 2 sidewalls is swallow-tailed guide rail 22, offer dovetail shaped chute 41 on the corpus unguis 4 vertical sections with guide rail 22 mutual interlocks, and the gap of precise design chute 41 and guide rail 22, it is unimpeded to guarantee to slide, and can play the effect of the diametral load of unloading piston again.Guide rail 22 adopts superior alloy steel to make the intensity height through the mold hot processing mode, wear-resistant, and guide rail 22 is welded as a whole with oil storage cylinder 2 and base 1, the carrying overturning couple is compared existing pawl formula jack, and the utility model is by being provided with the mode of the dovetail shaped sliding track mechanism of mutual interlock at oil storage cylinder 2 and 4 of corpus unguis, when jack is worked, the moment of torsion that radially overturns is delivered to dovetail shaped guide rail 22 by dovetail shaped chute 41, decomposes carrying with guide rail 22, oil storage cylinder 2, support 1.Because of dissociating with corpus unguis top board 42, piston 21 cooperates installation, only carry raising force, thereby unloaded the diametral load of piston 21, the simultaneously also corresponding weak points such as the leakage of oil of existing pawl formula jack, assembly distortion or clamping stagnation that solved, the reasonable in design novelty, both guarantee the advantage of the stressed science of pawl formula jack low level jacking, guaranteed the stability and the service life of inner other assemblies of its work efficiency and pawl formula jack again.
Claims (7)
1, piston off-load pawl formula jack, comprise base (1), base (1) is provided with oil storage cylinder (2) and Rocker Driving Mechanism (3), wear piston (21) in the oil storage cylinder (2), oil storage cylinder (2) one sides are provided with corpus unguis (4), piston (21) upper end is stretched out oil storage cylinder (2) top and is connected with corpus unguis top board (42), it is characterized in that: corpus unguis (4) vertically section with oil storage cylinder (2) sidewall by the sliding track mechanism sliding block joint of mutual interlock is set.
2, piston off-load pawl formula jack according to claim 1, it is characterized in that: described corpus unguis (4) side is L shaped.
3, piston off-load pawl formula jack according to claim 1 is characterized in that: described Rocker Driving Mechanism (3) is done 270 ° of rotations around pivot arm (31).
4, piston off-load pawl formula jack according to claim 1 is characterized in that: described sliding track mechanism comprises vertically being arranged on the guide rail (22) on oil storage cylinder (2) sidewall and being opened in the vertical section of corpus unguis (4) to be gone up and the cooresponding chute of guide rail (22) (41).
5. piston off-load pawl formula jack according to claim 4 is characterized in that: described guide rail (22) is a dovetail shaped with the cross-sectional plane of chute (41).
6, according to claim 4 or 5 described piston off-load pawl formula jacks, it is characterized in that: guide rail (22) is welded as a whole with oil storage cylinder (2) and base (1).
7, according to claim 4 or 5 described piston off-load pawl formula jacks, it is characterized in that: guide rail (22) adopts alloy steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201123893U CN201338926Y (en) | 2009-01-09 | 2009-01-09 | Piston unloading fingernail-type hoisting jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201123893U CN201338926Y (en) | 2009-01-09 | 2009-01-09 | Piston unloading fingernail-type hoisting jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201338926Y true CN201338926Y (en) | 2009-11-04 |
Family
ID=41234470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201123893U Expired - Fee Related CN201338926Y (en) | 2009-01-09 | 2009-01-09 | Piston unloading fingernail-type hoisting jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201338926Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830410A (en) * | 2010-05-21 | 2010-09-15 | 华东交通大学 | Portable ultralow space jack |
| CN104310266A (en) * | 2014-11-19 | 2015-01-28 | 杭州富阳泳富机械有限公司 | Novel hydraulic claw jack |
-
2009
- 2009-01-09 CN CNU2009201123893U patent/CN201338926Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830410A (en) * | 2010-05-21 | 2010-09-15 | 华东交通大学 | Portable ultralow space jack |
| CN101830410B (en) * | 2010-05-21 | 2013-01-02 | 华东交通大学 | Portable ultralow space jack |
| CN104310266A (en) * | 2014-11-19 | 2015-01-28 | 杭州富阳泳富机械有限公司 | Novel hydraulic claw jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20140109 |