CN101891134A - Rigid stop dog on jack - Google Patents
Rigid stop dog on jack Download PDFInfo
- Publication number
- CN101891134A CN101891134A CN2009101404957A CN200910140495A CN101891134A CN 101891134 A CN101891134 A CN 101891134A CN 2009101404957 A CN2009101404957 A CN 2009101404957A CN 200910140495 A CN200910140495 A CN 200910140495A CN 101891134 A CN101891134 A CN 101891134A
- Authority
- CN
- China
- Prior art keywords
- jack
- cross
- section
- underarm
- upper arm
- 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.)
- Granted
Links
- 241001125879 Gobio Species 0.000 claims description 28
- 229910000679 solder Inorganic materials 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 210000003205 muscle Anatomy 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract 2
- 230000008859 change Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Images
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a pantograph jack with a rigid stop dog used for limiting lifting and descending distances of a jack, comprising a load platform, a pair of upper arms, a pair of lower arms and a base. In order to limit the lifting distance of the jack, a bulge in a type of a welding spot, a rivet or a stamped rib is arranged on the inner wall of the load platform; one of the upper arms comprises an extension part which props against the bulge on the load platform; optionally or additionally, the lower end of a first lower arm is provided with a first gear, and the lower end of a second arm is provided with a second gear which is used for being substantially meshed with the first gear; and the first gear is provided with a bulge which props against the stop face of the second gear when the pantograph jack reaches the maximum height. In order to limit the descending distance of the pantograph jack, a bulge in a type of a welding spot, a rivet or a stamped rib is arranged on one of the upper arms or the lower arms; a bulge receiving groove is arranged in the other upper arm or the other lower arm; and the groove serves as a stop face when the pantograph jack descends to the lowest point.
Description
Technical field
Present invention relates in general to be used for the flexible jack of rhombus frame of lifting vehicle.More particularly, the present invention relates to a kind of pantograph with one or more rigidity stop feature, this rigidity stop feature is the arbitrary form in solder joint, rivet, punching press muscle or the profile shifting gear.
Background technology
From vehicular transport in early days, jack just is used for when want of repair, normally during changing of tire, lifts vehicle from ground.These jacks have a variety of forms, comprise hydraulic jack, lifting screw and scissors-type jack or the rhombus frame jack that stretches.
In known jack, hydraulic jack is too heavy usually and be not easy to vehicle and carry, although and lifting screw is lighter than hydraulic jack, the relative difficult operation, it needs a lot of screw threads that change could obtain appropriate vehicle liftings.
Yet the flexible jack of rhombus frame is lighter relatively, and can make the user only need the effort of appropriateness just can obtain higher relatively lifting degree.Therefore, the flexible jack of rhombus frame is that the most widely used instrument is selected in the emergency vehicles lifting.Most of now vehicles all are furnished with the flexible jack of rhombus frame as vehicle lifting instrument, enclose usually spare tyre and combination crowbar and clamp nut sleeve barrel tool.
The flexible jack of known rhombus frame comprises a pair of upper arm that is pivoted to a pair of underarm, and this top to upper arm is articulated by the vehicular load platform.This lower end to underarm is articulated by base seat support.This articulates at the gudgeon place the lower end of upper arm and upper end to underarm, and wherein, one in the gudgeon has screw thread, and another has sleeve.Drive screw with threaded portion and smooth part passes gudgeon, makes threaded portion and threaded gudgeon screw togather, and smooth part cooperates rotationally with sleeved gudgeon.In abutting connection with smooth part is driver element.
During operation, the user will place the flexible jack of the rhombus frame of its lowered position to be placed on a position of under-vehicle, vehicular load platform on this position approximate be positioned at vehicle specify the lifting zone below.Drive engages with proper implements and drive screw.User's turning tool then, this instrument rotating screw bolt, and then the rotating drive screw rod in sleeved gudgeon smooth part and turn the threaded portion that drive screw passes threaded gudgeon, make threaded gudgeon be pulled to sleeved gudgeon.This causes that the vehicular load platform engages with the appointment lifting zone of vehicle, and the flexible jack of rhombus frame moves to the position of its rise gradually.The continuation that is rotated further of instrument pulls to sleeved gudgeon with threaded gudgeon, and vehicle is lifted.After maintenance task was finished, user's counter-rotation instrument reduced vehicle.The user is rotated further instrument, is transferred to its lowered position until the flexible jack of rhombus frame, to leave in the vehicle.
Very naturally,, need the over-running of the flexible jack of restriction rhombus frame, so that jack can not rise certain a bit or be lower than certain a bit.In the past, the running restriction designs around drive screw, and drive screw is provided with one or more constriction point, perhaps is provided with the pipe of a certain diameter.In the limit excessive running, these methods also have some problems.For example, the application of constriction point or any other all can weaken the structure integrity of this part to the change of drive screw.On the other hand, pipe or similarly configuration increase the total weight of the flexible jack of rhombus frame, this is to being not wish a result seeing in the effort aspect the oil consumption now.
In the so numerous field of vehicle technology, the vehicle technical field of jacks is had living space and is carried out improvement design and efficient, thereby overcomes some limitation of known design.
Summary of the invention
The invention provides the flexible jack of a kind of rhombus frame, it is by providing lightweight jack with highly complete drive screw, provide the rise of rigidity stop motion mechanism restriction jack and the reduction of jack simultaneously, and overcomes the limitation of known technology.More particularly, the invention provides a kind of flexible jack of rhombus frame with load platform, a pair of upper arm, a pair of underarm and pedestal.Upper arm is pivoted to the load platform by pivot pin.Each upper arm is mounted to corresponding underarm by gudgeon.One in the gudgeon has screw thread, and another has sleeve.Underarm is pivoted to pedestal by pivot pin.
A kind of drive screw with threaded portion and smooth part is provided.The threaded portion of drive screw is screw-coupled to threaded gudgeon, and smooth part is assembled to smooth gudgeon rotationally simultaneously.Driver element is located at the end of the smooth part of drive screw, is used to make the user to utilize the buckle instrument to operate.
The rigidity stop motion mechanism is provided, and its flexible elevated distance of jack of restriction rhombus frame also limits the flexible reducible distance of jack of rhombus frame.In order to limit the flexible elevated distance of jack of rhombus frame, two kinds of selectable configurations are provided, these two kinds of selectable configurations can be used separately also and can be used in combination.According to a kind of selection, on the inwall of load platform, form the projection of solder joint, rivet or the punching press muscle form of projection.One in the upper arm comprises extendible portion, and it props up the projection of load platform when the flexible jack of rhombus frame arrives maximum height.Select according to another kind, form first gear, be formed in the lower end of second arm and first gear ingear second gear in fact in the lower end of first underarm.First gear is provided with projection, its when the flexible jack of rhombus frame arrives maximum height and the stop surface of second gear offset.
In order to limit the flexible reducible distance of jack of rhombus frame, a projection that is provided with solder joint, rivet or raised ribs form in upper arm or the underarm.In upper arm or the underarm another has therein the protruding receiving slit that forms, groove when the flexible jack of rhombus frame is reduced to its nadir as stop surface.
After having read the detailed description of preferred embodiment of the present invention with claim in conjunction with the accompanying drawings, other advantages of the present invention and feature will become apparent.
Description of drawings
In order to understand the present invention more thoroughly, please refer to the following embodiment that in the drawings and specific embodiments, is illustrated in further detail by the mode of example, wherein:
Fig. 1 is the lateral plan with flexible jack of rhombus frame of limited features according to the present invention;
Fig. 2 is the top fragmentary, perspective view of the flexible jack of rhombus frame of the present invention;
Fig. 3 is the cutaway view of intermeshed gear of the present invention: and
Fig. 4 is the middle part fragmentary, perspective view of the flexible jack of rhombus frame of the present invention.
The specific embodiment
In the following drawings, identical Reference numeral is used in reference to identical assembly of generation.Below in the explanation, different operating parameters and assembly are used to illustrate heteroid embodiment.Parameter that these are specific and assembly be only as example, and do not mean that qualification.
With reference to Fig. 1, expression is generally with 10 lateral plans of representing according to the flexible jack of rhombus frame of the present invention.Should be appreciated that shown jack 10 only is used for example, the size of unit design and one or more assemblies can be passed through any way change, and does not weaken favorable characteristics of the present invention.
The flexible jack 10 of rhombus frame comprises a pair of upper arm 12 that groove arranged and 12 ' and a pair of underarm 14 and 14 ' that groove is arranged.Each upper arm 12 and 12 ' upper end are pivoted to load platform 16 by pair of pivot pin 18 and 18 '.Load platform 16 typically is stamped to form by unitary piece of metal, can be any structure, and can have the deep trouth that forms between for example surperficial head lamp brush guard pivot pin 18 and 18 ' thereon.The upper surface of load platform 16 is designed to be able to suitably cooperate with the lifting zone (not shown) of vehicle generally.
The flexible jack 10 of rhombus frame comprises base seat support 20, this base seat support have a pair of by its stretch out separately and vertical back plate, this only can see one to back plate in institute's diagrammatic sketch, promptly back plate 22.Base seat support 20 can be any structure, and a kind of structure wherein only is shown among the figure for limiting purpose.Underarm 14 and each lower end of 14 ' are contained on the vertical support panel by pivot pin, and pivot pin provides as a pair of pivot pin that separates 24 and 24 '.
Known as affiliated technical field, drive screw 26 is used to lift and reduces the flexible jack 10 of rhombus frame.Drive screw 26 comprises threaded portion 28 and smooth part 30.The length of the total length of drive screw 26 and threaded portion 28 and smooth part 30 can change as required.
The end of smooth part 30 has the driver element bearing 34 of driver element 32 and adjacency, and this also is known in affiliated technical field.Driver element 32 has the hole 36 of passing its formation.In the terminal (not shown) patchhole 36 of the buckle of driven tool, the user is clockwise or anticlockwise motion drive screw 26 as is well known as required, so that the flexible jack 10 of rhombus frame rises or reduces.
Threaded gudgeon 40 is provided, and upper arm 12 and underarm 14 are pivoted on it.Provide sleeved gudgeon 42, upper arm 12 ' and underarm 14 ' are pivoted on it.The threaded portion 28 and the threaded gudgeon 40 of drive screw 26 screw togather.The smooth part 30 of drive screw 26 cooperates rotationally with sleeved gudgeon 42.The smooth part 30 of drive screw 26 is rotated in sleeved gudgeon 42, and drive screw 26 moves with respect to the linearity of sleeved gudgeon 42 and is carried out restriction, and is known as affiliated technical field.On the contrary, drive screw 26 moves with respect to the linearity of threaded gudgeon 40 and causes that the flexible jack 10 of rhombus frame selectively rises according to user's wish or reduces, and is known as affiliated technical field.
According to the present invention, provide the flexible jack of restriction rhombus frame can rise distance and limit the rigidity stop motion mechanism that the flexible jack of rhombus frame can reduce distance.Be different from known technology, the rigidity stop motion mechanism does not combine with drive screw, but is attached to other parts of the flexible jack 10 of rhombus frame.According to the present invention, can rise distance in order to limit the flexible jack of rhombus frame, two optionally configurations are provided, these two configurations can be used separately also and can be used in combination.
A kind of selection that the flexible jack 10 of restriction rhombus frame can rise distance is shown in Fig. 2.Select according to this, on the inwall of load platform 16, form the projection 46 of projection solder joint, rivet or punching press muscle form.In the upper arm one, example shown in the figure is a upper arm 12 ', comprises dentation extendible portion 48, it props up the projection 46 of load platform 16 when the flexible jack of rhombus frame arrives maximum height.Should note, although shown in Figure 2 protruding 46 formation on load platform 16, dentation extendible portion 48 are gone up at upper arm 12 ' and are formed, it should be understood that projection also can also form in underarm at formation, dentation extendible portion on the base seat support at an easy rate at an easy rate.
The another kind selection that the flexible jack 10 of restriction rhombus frame can rise distance is shown in Fig. 3.Select according to this,, be formed in the lower end of underarm 14 ' and gear 50 gears in mesh 52 in fact at the lower end of underarm 14 formative gear 50.Gear 52 is provided with projection 54, its when the flexible jack of rhombus frame arrives maximum height and the stop surface 56 of gear 50 offset.Form in the lower end of underarm although should be noted that gear shown in Figure 3, gear also can form in the upper end of upper arm at an easy rate.
Fig. 4 represents a kind of configuration of the present invention, can limit the reduced distance of the flexible jack 10 of rhombus frame by this configuration.According to this configuration, upper arm 12 ' is provided with the projection 58 of solder joint, rivet or raised ribs form.Underarm 14 ' is provided with the protruding receiving slit 60 that forms therein.Groove 60 when the flexible jack of rhombus frame is reduced to its nadir as stop surface.Although should be noted that shown in Figure 4 protruding 58 form on the upper arm, groove 60 forms on underarm, projection 58 also can form on the underarm, groove 60 also can form on upper arm.
Above-mentioned explanation discloses and has set forth exemplary embodiment of the present invention.The person of ordinary skill in the field can be easy to recognize from above-mentioned explanation and accompanying drawing and claim and can make various changes, modifications and variations, and of the present invention real thought that does not break away from claim and limited and just protection domain.
Claims (20)
1. the flexible jack of rhombus frame that is used for lifting and reduction vehicle chassis etc. is characterized in that, comprises:
First cross section with top and bottom;
Second cross section with top and bottom;
The load platform, the upper end of the upper end of described first cross section and described second cross section is pivoted to described load platform;
Pedestal, the lower ending pivot of the lower end of described first cross section and described second cross section is connected to described pedestal;
Drive screw with threaded portion and smooth part, described threaded portion is screw-coupled in described first cross section or described second cross section, and described smooth part is rotatably mounted another to described second cross section or described first cross section;
Be mounted to first moving limiting element of described first cross section; And
Be used for second moving limiting element that contacts with described first moving limiting element, described second moving limiting element is mounted at least one in described load platform, described first cross section or described second cross section.
2. the rhombus frame according to claim 1 jack that stretches, it is characterized in that, described first cross section partly comprises upper arm and underarm, wherein said first moving limiting element comprises a projection of stretching out from described upper arm and described underarm, and the groove that forms in described underarm and described upper arm another.
3. the rhombus frame according to claim 2 jack that stretches is characterized in that described projection is selected from the group that is made up of solder joint and rivet.
4. the rhombus frame according to claim 1 jack that stretches, it is characterized in that, described load platform has inwall, described first cross section comprises upper arm, described first moving limiting element comprises the tooth that stretches out from described upper arm, the projection that described second moving limiting element stretches out for the inwall from described load platform.
5. the rhombus frame according to claim 4 jack that stretches is characterized in that described projection of stretching out from the inwall of described load platform is selected from the group that is made up of solder joint, rivet and punching press muscle.
6. the rhombus frame according to claim 1 jack that stretches, it is characterized in that, described first cross section comprises first underarm with first gear, described second cross section comprises having and is used for and described first gear second underarm of ingear second gear in fact, described first moving limiting element is included in the stopping part that forms on described first gear, and described second moving limiting element is included in the stopping part that forms on described second gear.
7. the flexible jack of rhombus frame that is used for lifting and reduction vehicle chassis etc. is characterized in that, comprises:
First cross section;
Second cross section;
The load platform, described first cross section and described second cross section are mounted to described load platform;
Pedestal, described first cross section and described second cross section are pivoted to described pedestal;
From the first outstanding moving limiting element of described first cross section; And
Be mounted at least one second moving limiting element in described load platform, described first cross section or described second cross section.
8. the rhombus frame according to claim 7 jack that stretches, it is characterized in that, described first cross section partly comprises upper arm and underarm, wherein said first moving limiting element comprises a projection of stretching out from described upper arm and described underarm, and the groove that forms in described underarm and described upper arm another.
9. the rhombus frame according to claim 8 jack that stretches is characterized in that described projection is selected from the group that is made up of solder joint, rivet and punching press muscle.
10. the rhombus frame according to claim 7 jack that stretches, it is characterized in that, described load platform has inwall, described first cross section comprises upper arm, described first moving limiting element comprises the tooth that stretches out from described upper arm, the projection that described second moving limiting element stretches out for the inwall from described load platform.
The jack 11. rhombus frame according to claim 10 stretches is characterized in that described projection of stretching out from the inwall of described load platform is selected from the group that is made up of solder joint, rivet and punching press muscle.
The jack 12. rhombus frame according to claim 7 stretches, it is characterized in that, described first cross section comprises first underarm with first gear, described second cross section comprises having and is used for and described first gear second underarm of ingear second gear in fact, described first moving limiting element is included in the stopping part that forms on described first gear, and described second moving limiting element is included in the stopping part that forms on described second gear.
The jack 13. rhombus frame according to claim 7 stretches, it is characterized in that, further comprise drive screw with threaded portion and smooth part, described threaded portion is screw-coupled in described first cross section or described second cross section, and described smooth part is rotatably mounted another to described second cross section or described first cross section.
The jack 14. rhombus frame according to claim 13 stretches is characterized in that, described first cross section comprises upper arm, underarm and interconnection gudgeon, and described second cross section comprises upper arm, underarm and interconnection gudgeon.
15. the flexible jack of rhombus frame selectively movable at raised position and between dipping is characterized in that, the flexible jack of this rhombus frame comprises:
A pair of upper arm;
The a pair of underarm that is pivoted to described upper arm;
Load platform, described upper arm are pivoted to described load platform;
Pedestal, described underarm is pivoted to described pedestal;
Be used to limit the assembly that jack can the rise level, described assembly comprises from by the projection of stretching out in the group that is formed in the described upper arm and the described underarm; And
Be used to limit the assembly that jack can the reduction level, second stopping element in first stopping element in the described upper arm of described assembly bag and the described underarm
The jack 16. rhombus frame according to claim 1 stretches is characterized in that described load platform comprises inwall, describedly is used to limit the assembly that jack can the rise level and further comprises the projection of stretching out from described load platform inwall.
The jack 17. rhombus frame according to claim 16 stretches is characterized in that, the described described projection that is used to limit the assembly that jack can the rise level is stretched out from described upper arm.
The jack 18. rhombus frame according to claim 15 stretches, it is characterized in that, described a pair of underarm comprises first underarm and second underarm, described first underarm has first gear, described second underarm has and is used for and described first gear ingear second gear in fact, described projection is included in the stopping part that forms on described first gear, describedly is used to limit the assembly that jack can the rise level and further is included in the stopping part that forms on described second gear.
The jack 19. rhombus frame according to claim 15 stretches, it is characterized in that, described described first stopping element that is used to limit the assembly that jack can the reduction level is projection, and described described second stopping element that is used to limit the assembly that jack can the reduction level is a groove.
The jack 20. rhombus frame according to claim 15 stretches, it is characterized in that, described a pair of upper arm comprises first upper arm and second upper arm, described a pair of underarm comprises first underarm and second underarm, the flexible jack of rhombus frame further comprises and is used for sleeved gudgeon that described first upper arm is pivoted to the threaded gudgeon of described first underarm and is used for described second upper arm is pivoted to described second underarm, the flexible jack of rhombus frame further comprises the drive screw with threaded portion and smooth part, the described threaded portion of described drive screw is screw-coupled to described threaded gudgeon, and the described smooth part of described drive screw is rotatably mounted to sleeved gudgeon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910140495.7A CN101891134B (en) | 2009-05-19 | 2009-05-19 | Positive stop on jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910140495.7A CN101891134B (en) | 2009-05-19 | 2009-05-19 | Positive stop on jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101891134A true CN101891134A (en) | 2010-11-24 |
| CN101891134B CN101891134B (en) | 2015-09-02 |
Family
ID=43100510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910140495.7A Expired - Fee Related CN101891134B (en) | 2009-05-19 | 2009-05-19 | Positive stop on jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101891134B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211744A (en) * | 2011-03-25 | 2011-10-12 | 常熟通润汽车千斤顶有限公司 | Scissor jack with fork lever nut |
| CN103130146A (en) * | 2013-03-06 | 2013-06-05 | 宁波天益齿轴齿轮有限公司 | Jack with separable support arms |
| CN107160384A (en) * | 2016-09-30 | 2017-09-15 | 江苏中天华宇智能科技有限公司 | A kind of powder or the packed class material lifting reclaimer system of graininess |
| CN112939140A (en) * | 2021-01-30 | 2021-06-11 | 许雄基 | A heavy husky device of whirl for hydraulic engineering |
| CN114562315A (en) * | 2022-02-24 | 2022-05-31 | 淮北矿业股份有限公司 | Fully mechanized caving face mining transition support |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583713A (en) * | 1984-06-29 | 1986-04-22 | Aisin Seiki Kabushiki Kaisha | Pantograph jack apparatus |
| JPH11180691A (en) * | 1997-12-18 | 1999-07-06 | Nissan Motor Co Ltd | Pantograph type jack |
| JP2000177996A (en) * | 1998-12-16 | 2000-06-27 | Toyo Denso Co Ltd | Power jack with drive safety function |
| US6375161B2 (en) * | 1998-11-24 | 2002-04-23 | Norco Industries, Inc. | Scissor jack |
| US6695289B1 (en) * | 2003-02-03 | 2004-02-24 | Emil Mickael | Motor driven scissor jack with limit switches |
| CN2652907Y (en) * | 2003-08-28 | 2004-11-03 | 张贵昌 | Horizontal mechanical jack |
| CN101058393A (en) * | 2006-04-21 | 2007-10-24 | 郑元 | Electric scissor jack |
| CN101195466A (en) * | 2007-12-29 | 2008-06-11 | 马春路 | Speed changing force-saving skeleton symbol screw block and operating rocker handle thereof |
| CN201183735Y (en) * | 2007-12-29 | 2009-01-21 | 马春路 | Variable speed labor-saving simple jack and operation control crank thereof |
-
2009
- 2009-05-19 CN CN200910140495.7A patent/CN101891134B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583713A (en) * | 1984-06-29 | 1986-04-22 | Aisin Seiki Kabushiki Kaisha | Pantograph jack apparatus |
| JPH11180691A (en) * | 1997-12-18 | 1999-07-06 | Nissan Motor Co Ltd | Pantograph type jack |
| US6375161B2 (en) * | 1998-11-24 | 2002-04-23 | Norco Industries, Inc. | Scissor jack |
| JP2000177996A (en) * | 1998-12-16 | 2000-06-27 | Toyo Denso Co Ltd | Power jack with drive safety function |
| US6695289B1 (en) * | 2003-02-03 | 2004-02-24 | Emil Mickael | Motor driven scissor jack with limit switches |
| CN2652907Y (en) * | 2003-08-28 | 2004-11-03 | 张贵昌 | Horizontal mechanical jack |
| CN101058393A (en) * | 2006-04-21 | 2007-10-24 | 郑元 | Electric scissor jack |
| CN101195466A (en) * | 2007-12-29 | 2008-06-11 | 马春路 | Speed changing force-saving skeleton symbol screw block and operating rocker handle thereof |
| CN201183735Y (en) * | 2007-12-29 | 2009-01-21 | 马春路 | Variable speed labor-saving simple jack and operation control crank thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211744A (en) * | 2011-03-25 | 2011-10-12 | 常熟通润汽车千斤顶有限公司 | Scissor jack with fork lever nut |
| CN102211744B (en) * | 2011-03-25 | 2013-02-06 | 常熟通润汽车千斤顶有限公司 | Scissor jack with fork lever nut |
| CN103130146A (en) * | 2013-03-06 | 2013-06-05 | 宁波天益齿轴齿轮有限公司 | Jack with separable support arms |
| CN107160384A (en) * | 2016-09-30 | 2017-09-15 | 江苏中天华宇智能科技有限公司 | A kind of powder or the packed class material lifting reclaimer system of graininess |
| CN112939140A (en) * | 2021-01-30 | 2021-06-11 | 许雄基 | A heavy husky device of whirl for hydraulic engineering |
| CN114562315A (en) * | 2022-02-24 | 2022-05-31 | 淮北矿业股份有限公司 | Fully mechanized caving face mining transition support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101891134B (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101891134A (en) | Rigid stop dog on jack | |
| US4025053A (en) | Screw actuated scissor jack with a self adjusting bearing surface | |
| CN201212011Y (en) | Hydraulic lifting device | |
| US8424848B1 (en) | Vehicle jack for use on vehicles to change tires and for other purposes | |
| DE102005001825A1 (en) | jack | |
| DE202010007856U1 (en) | Lifting device for lifting and lowering loads, in particular of vehicles | |
| CN201258028Y (en) | Turnover mechanism of driver's cab | |
| CN201934415U (en) | Telescopic sleeve type hydraulic cylinder with flared opening on tail part of outer cylinder sleeve | |
| US11472378B2 (en) | Vehicle built-in electric jack system | |
| CN210457344U (en) | Screw lifting type material barrel carrying trolley | |
| CN2320614Y (en) | Scissor jack | |
| CN202300213U (en) | Drilling machine lifting type derrick | |
| US2153888A (en) | Double acting jack | |
| CN205381903U (en) | Formula of cutting machine of lifting with air -operated controller support | |
| CN104763417B (en) | Underground channeling construction device | |
| CN107758554B (en) | Meshing tooth structure capable of guaranteeing floatable jack heads | |
| CN2556182Y (en) | Hand double-column oil jack | |
| CN2677358Y (en) | Automobile lifting machine | |
| CN203717530U (en) | Car cab overturn oil cylinder adopting novel structure | |
| CN207738382U (en) | A kind of multi-function hydraulic jack | |
| CN2245605Y (en) | scissor jack | |
| CN108914798A (en) | Auto-induction type speed sensing device applied to wisdom traffic | |
| CN2646116Y (en) | Screw type double stroke jack | |
| CN201553217U (en) | Automobile cab hydraulic reversing device | |
| CN206141646U (en) | Automobile spare tire mounting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20150902 Termination date: 20200519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |