CN103121648B - Car jack - Google Patents
Car jack Download PDFInfo
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- CN103121648B CN103121648B CN201310070421.7A CN201310070421A CN103121648B CN 103121648 B CN103121648 B CN 103121648B CN 201310070421 A CN201310070421 A CN 201310070421A CN 103121648 B CN103121648 B CN 103121648B
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- screw rod
- hold
- down arm
- jack
- grooves
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Abstract
The invention discloses car jack, comprise the first hold-down arm, the second hold-down arm, the 3rd hold-down arm, the 4th hold-down arm, described first hold-down arm is flexibly connected by the first active connection part with the 3rd hold-down arm, described second hold-down arm is flexibly connected by the second active connection part with the 4th hold-down arm, and the first active connection part and the second active connection part are all passed by a screw rod.Described screw rod comprises the first screw rod, the second screw rod and the 3rd screw rod.Described first screw rod connects second screw rod one end and is provided with pipe link, described second screw rod connects first screw rod one end and offers No. two No. three grooves coordinating described pipe link, it is No. two convex heads that described second screw rod connects the 3rd screw rod end, described 3rd screw rod connects No. three grooves that the second screw rod end offers cooperation second screw rod No. two convex heads, is provided with No. three elastic partss in described No. three grooves.Wherein the second screw rod is detachable, rotates in jack after dismounting by the 3rd screw rod, reduces screw rod and takes up room, reduce packing box material, reduce costs.
Description
Technical field
The invention belongs to car jack.
Background technology
Jack is that part is lifted as equipment, the light little weight-lifting equipment of jacking weight in stroke by top bracket or bottom claw in one rigidity top.Rack-jack, lifting screw and hydraulic jack 3 kinds can be divided into by architectural feature.Jack is the simplest weight-lifting equipment of a kind of lifting highly little (being less than 1m).It has mechanical type and fluid pressure type two kinds.Mechanical jack has again rack-and-pinion and spiral two kinds, because hoisting capacity is little, operation effort, general only for flight-line maintenance work, repair in bridge process inapplicable.Hydraulic jack compact conformation, stable working, has self-locking action, therefore uses extensively.Its shortcoming is lifting limited height, and lifting velocity is slow.The kind of car jack can be divided into rack-jack, lifting screw and hydraulic jack and Inflated jack four kinds.In car jack conventional at present, a lot of jack is after accepting, and the screw rod in jack still has quite a few to stay outside jack.Many with regard to having made the entire length of jack grow like this, for wiring up, just need the longer of packet design, materials demand is more, and cost is also just relatively high.
Summary of the invention
The present invention is directed to prior art deficiency, provide the detachable combination of a kind of screw rod can reduce the cost-saving jack of packing box length.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: car jack, comprise the first hold-down arm, second hold-down arm, 3rd hold-down arm, 4th hold-down arm, described first hold-down arm is flexibly connected by the first active connection part with the 3rd hold-down arm, described second hold-down arm is flexibly connected by the second active connection part with the 4th hold-down arm, first active connection part and the second active connection part are all passed by a screw rod, described first hold-down arm and the second hold-down arm support and connection place are provided with base, described 3rd hold-down arm and the 4th hold-down arm junction are provided with pallet, it is characterized in that: described screw rod comprises the first screw rod, second screw rod and the 3rd screw rod, described first screw rod connects second screw rod one end and is provided with pipe link, described second screw rod connects first screw rod one end and offers No. two No. three grooves coordinating described pipe link, it is No. two convex heads that described second screw rod connects the 3rd screw rod end, described 3rd screw rod connects No. three grooves that the second screw rod end offers cooperation second screw rod No. two convex heads, No. three elastic partss are provided with in described No. three grooves.
In technique scheme, No. two convex heads of described second screw rod are square, and described 3rd screw rod No. three grooves are square, and described No. two convex heads and described No. three grooves can be combined closely, facilitate bolt rotary, combine the wearing and tearing that can reduce between the second screw rod and the 3rd screw rod relative to difformity.
In technique scheme, described No. three elastic partss are spring, and spring cost is low, good springiness.
In technique scheme, described spring maximum compressibility is 24 percent of free height, and brute spring prevents the second screw rod in use procedure from dropping affects result of use.
The present invention compared with prior art, has following beneficial effect: the present invention is directed to prior art deficiency, provides a kind of screw rod detouchable car jack.After second screw rod disassembles, the 3rd screw rod is rotated in jack, reduces the length that screw rod stays outside jack, decrease the length of the packing box of packaging jack, save material, reduce packing cost.
Accompanying drawing explanation
Fig. 1 is embodiment 1, embodiment 2, embodiment 3 schematic perspective view.
Fig. 2 is the first screw rod in embodiment 1, being separated of the second screw rod and the 3rd screw rod time schematic diagram.
Fig. 3 is the first screw rod in embodiment 2, being separated of the second screw rod and the 3rd screw rod time schematic diagram.
Fig. 4 is the second screw rod No. two groove ends enlarged drawings in embodiment 2.
Fig. 5 is the first screw rod in embodiment 3, being separated of the second screw rod and the 3rd screw rod time schematic diagram.
Fig. 6 is the first screw rod in embodiment 3, being separated of the 4th screw rod and the 3rd screw rod time schematic diagram.
Fig. 7 is A-A schematic cross-section in Fig. 6.
Fig. 8 is B-B schematic cross-section in Fig. 6.
Fig. 9 is embodiment 4 schematic perspective view.
Schematic diagram when Figure 10 is the connection of the first screw rod in embodiment 4, the second screw rod and the 3rd screw rod.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail: embodiment 1: see Fig. 1 and Fig. 2, car jack, comprise the first hold-down arm 1, second hold-down arm 2, 3rd hold-down arm 3, 4th hold-down arm 4, described first hold-down arm 1 is flexibly connected by the first active connection part 17 with the 3rd hold-down arm 3, described second hold-down arm 2 is flexibly connected by the second active connection part 18 with the 4th hold-down arm 4, first active connection part 17 and the second active connection part 18 are all passed by a screw rod 7, described screw rod 7 comprises the first screw rod 8, second screw rod 9 and the 3rd screw rod 10, described first screw rod 8 is square screw rod, first screw rod 8 is controlled to rotate by a motor 15, one end that described second screw rod 9 connects the first screw rod 8 offers the square opening 11 of cooperation first screw rod 8, second screw rod 9 is enclosed within outside the first screw rod 8, and the second screw rod 9 and the first screw rod 8 closely cooperate, first screw rod 8 rotates the rotation of drive second screw rod 9.
It is convex 12 that described second screw rod 9 connects the 3rd screw rod 10 end, one end that described 3rd screw rod 10 connects the second screw rod 9 offers the groove 13 of cooperation second screw rod 9 convex 12, the groove 13 of the 3rd screw rod 10 is enclosed within outside the convex 12 of the second screw rod 9, and the 3rd screw rod 10 and the second screw rod 9 closely cooperate, second screw rod 9 rotates the rotation of rear drive the 3rd screw rod 10, is provided with elastic parts 14 in described groove 13.Elastic parts 14 is springs, and spring cost is low, good springiness, and the spring of high strength can prevent the second screw rod 9 in use procedure from dropping and affecting normal use.3rd screw rod 10 is through on the second active connection part 18.
Described first hold-down arm 1 and the second hold-down arm 2 support and connection place are provided with base 5, and base 5 is used for support jack, and described 3rd hold-down arm 3 and the 4th hold-down arm 4 junction are provided with pallet 6, and pallet 6 is used for holding to be needed by the object of jack-up.Above-mentioned motor 15 connects a remote controller, and remote controller can control rising and the decline of jack.
During use, the convex of the second screw rod 9 12 is first inserted groove 13 place of the 3rd screw rod 10, firmly head into toward in, the stressed inside contraction of elastic parts 14, take advantage of a situation and to be inserted in the first screw rod 8 by the second screw rod 9, loose one's grip, elastic parts 14 is upheld when not stressing, withstand the second screw rod 9, the second screw rod 9 separately cannot be dropped from the first screw rod 8.
Start remote controller, risen by jack, jack-up object completes the operation needing to carry out.After operation terminates, use a teleswitch descending jack, after jack declines completely, second screw rod 9 is exerted all one's strength toward the 3rd screw rod 10 direction, elastic parts 14 forced contraction, now the second screw rod 9 leaves the first screw rod 8, takes out the second screw rod 9, manually the 3rd screw rod 10 is rotated in jack, namely rotates into toward the first screw rod 8 direction.Jack and the second screw rod 9 are put into packing box and are preserved the most at last.
Embodiment 2: compared with embodiment 1, difference is, the screw-rod structure of described jack is different, and all the other are all identical.
See Fig. 1, Fig. 3 and Fig. 4, car jack, described first screw rod 8 connects second screw rod 9 one end and is provided with pipe link 119, described pipe link 119 is welded on described first screw rod 8, first screw rod 8 is controlled to rotate by a motor 15, described second screw rod 9 connects first screw rod 8 one end and offers No. two grooves 120 coordinating described pipe link 119, No. two grooves 120 can hold described pipe link 119, after pipe link 119 enters No. two grooves 120, can be that pipe link 119 is contained in No. two grooves 120 completely, also the two ends of pipe link 119 can be made to be exposed at outside No. two grooves 120, do not affect result of use.The rotation of the first screw rod 8 drives the rotation of the second screw rod 9.
It is No. two convexs 112 that described second screw rod 9 connects the 3rd screw rod 10 end, described 3rd screw rod 10 connects No. three grooves 113 that the second screw rod 9 end offers cooperation second screw rod 9 No. two convexs 112, No. three grooves 113 of the 3rd screw rod 10 are enclosed within outside No. two convexs 112 of the second screw rod 9, and the 3rd screw rod 10 and the second screw rod 9 closely cooperate, second screw rod 9 rotates the rotation of rear drive the 3rd screw rod 10, is provided with No. three elastic partss 114 in described No. three grooves 113.No. three elastic partss 114 are springs, and spring cost is low, good springiness, and the spring of high strength can prevent the second screw rod 9 in use procedure from dropping and affecting normal use.3rd screw rod 10 is through on the second active connection part 18.
Described first hold-down arm 1 and the second hold-down arm 2 support and connection place are provided with base 5, and base 5 is used for support jack, and described 3rd hold-down arm 3 and the 4th hold-down arm 4 junction are provided with pallet 6, and pallet 6 is used for holding to be needed by the object of jack-up.Above-mentioned motor 15 connects a remote controller, and remote controller can control rising and the decline of jack.
During use, No. two convexs of the second screw rod 9 112 are first inserted No. three groove 113 places of the 3rd screw rod 10, firmly head into toward in, No. three stressed inside contractions of elastic parts 114, take advantage of a situation and the second screw rod 9 No. two No. three grooves 120 are aimed at the pipe link 119 of the first screw rod 8, and make pipe link 119 be positioned at No. two grooves 120, loose one's grip, No. three elastic partss 114 are upheld when not stressing, and withstand the second screw rod 9, and the second screw rod 9 separately cannot be dropped from the first screw rod 8.
Start remote controller, risen by jack, jack-up object completes the operation needing to carry out.After operation terminates, use a teleswitch descending jack, after jack declines completely, second screw rod 9 is exerted all one's strength toward the 3rd screw rod 10 direction, No. three elastic parts 114 forced contraction, now the second screw rod 9 leaves the first screw rod 8, takes out the second screw rod 9, manually the 3rd screw rod 10 is rotated in jack, namely rotates into toward the first screw rod 8 direction.Jack and the second screw rod 9 are put into packing box and are preserved the most at last.
Embodiment 3: compared with embodiment 1, difference is, the screw-rod structure of described jack is different, and all the other are all identical.
See Fig. 1, Fig. 5 ~ Fig. 8, car jack, above-mentioned screw rod 7 comprises the first screw rod 8, second screw rod 9 and the 3rd screw rod 10, described first screw rod 8 is square screw rod, and described second screw rod 9 connects No. three square openings 211, No. three square openings 211 that the first screw rod 8 end offers cooperation first screw rod 8 and wraps in outside the first screw rod 8, combine closely mutually, the first screw rod 8 drives the second screw rod 9 to rotate.It is No. three convexs 212 that described second screw rod 9 connects the 3rd screw rod 10 end, described 3rd screw rod 10 connects No. five grooves 213 that the second screw rod 9 end offers cooperation second screw rod 9 No. three convexs 212, No. five grooves 213 wrap in outside No. three convexs 212, and combine closely mutually.
Be provided with No. four elastic partss 214, No. four elastic partss 214 in above-mentioned No. five grooves 213 and be preferably spring, spring cost is low, good springiness, and brute spring is for the effect playing enthusiasm service life of device.Described No. five grooves 213 are offered to No. four elastic partss 214 and are extended to the 3rd screw rod 10 other end from No. four elastic parts 214 surroundings, briefly, inner No. five grooves 213 of 3rd screw rod 10 are annular arrangement, annular arrangement No. five groove 213 inside are solid, and described No. four elastic partss 214 are arranged on solid position.Be hollow between annulus inner circle and cylindrical.
Shrink toward the first screw rod 8 faster to make the 3rd screw rod 10 and connect the first screw rod 8, be provided with cylinder the 4th screw rod 219 that can connect the first screw rod 8 and the 3rd screw rod 10, described 4th screw rod 219 connects No. two square openings 221 that the first screw rod 8 end offers cooperation first screw rod 8, No. two square openings 221 are the same with No. three square opening 211 sizes of the second screw rod 9, the first screw rod 8 of combining closely.Described 4th screw rod 219 connects No. four grooves 220 that the 3rd screw rod 10 end offers cooperation No. five grooves 213, briefly, 4th screw rod 219 is cylinder type hollow near the 3rd inside, screw rod 10 one end, but cylindrical hollow site does not communicate with No. two square openings 221.4th screw rod 219 enters by No. five grooves 213 of the 3rd screw rod 10, and enters into ring part, deeply embeds the 3rd screw rod 10.Have screw thread outside described 4th screw rod 219, described No. five groove 213 inwalls are provided with screw thread, and namely annulus cylindrical wall or annulus inner round wall are provided with screw thread, also both can be provided with screw thread.The screw thread of the 4th screw rod 219 can adapt with the screw thread of the 3rd screw rod 10 No. five grooves 213, and the rotation of the 4th screw rod 219 is to the effect of the 3rd screw rod 10 No. five groove 213 screw threads, makes the 3rd screw rod 10 close toward the 4th screw rod 219 direction.
Described first hold-down arm 1 and the second hold-down arm 2 support and connection place are provided with base 5, and described 3rd hold-down arm 3 and the 4th hold-down arm 4 junction are provided with pallet 6.
During use, starting switch, jack is made to increase, after complete operation, descending jack, then with hand, the second screw rod 9 is exerted all one's strength toward the 3rd screw rod 10 direction, second screw rod 9 compresses No. four elastic partss 214, now, second screw rod 9 departs from the first screw rod 8, take out the second screw rod 9, shrink toward the first screw rod 8 faster to make the 3rd screw rod 10 and connect the first screw rod 8, be provided with the 4th screw rod 219, 4th screw rod 219 is rotated into toward the 3rd screw rod 10 No. five grooves 213, then the 4th screw rod 219 is combined with the first screw rod 8, open switch turns first screw rod 8, the 4th screw rod 219 is driven to rotate, after the screw thread of the 4th screw rod 219 and the threaded function of the 3rd screw rod 10 No. five grooves 213, 3rd screw rod 10 rotates toward the 4th screw rod 219 direction, 4th screw rod 219 a little to enter into the 3rd screw rod 10 inner, final first screw rod 8, 4th screw rod 219 and the 3rd screw rod 10 be combined with each other, closing switch.Now shorten screw rod 7 length being retained in outside, reduced screw rod 7 and take up room, reduce packing box material, reduce costs.
Use the 4th screw rod 219, after the 3rd screw rod 10 shrinks, second active connection part 18 is also simultaneously toward interior movement, at this time before startup jack, jack is risen height, when between jack and the object needing jack-up, gap ratio is larger, by original mode, little by little rising jack is relatively slow, and such method can improve the ascending velocity of jack.
Embodiment 4: compared with embodiment 1, difference is, described jack is hand jack, and the screw-rod structure of jack is different, and all the other are all identical.
See Fig. 9 and Figure 10, car jack, the coupling end be connected with the second screw rod 9 in above-mentioned first screw rod 8 is a hollow end 315, this inside, one end of first screw rod 8 is emptied, described hollow end 315 inwall is provided with an elastic parts 321, an elastic parts 321 is preferably spring, cost is low, elastic effect is good, inwall is arranged a multiple elastic parts 321, a described elastic parts 321 connects some connecting straps 319, it is best that connecting strap 319 arranges at least two panels, a described connecting strap 319 is echelon form, the outer end of a described connecting strap 319 is inclined-plane, outward opening is that inclined-plane facilitates the second screw rod 9 to enter, inside contact surface is plane, slip after conveniently entering, and plane is fixing more effective than fixing of male and fomale(M&F).The coupling end be connected with the second screw rod 9 in described 3rd screw rod 10 is No. two hollow end 316, this inside, one end of 3rd screw rod 10 is emptied, described No. two hollow end 316 inwalls are provided with No. two elastic partss 322, No. two elastic partss 322 are preferably spring, cost is low, elastic effect is good, inwall is arranged multiple No. two elastic partss 322, described No. two elastic partss 322 connect some No. two connecting straps 320, it is best that No. two connecting straps 320 arrange at least two panels, described No. two connecting straps 320 are echelon form, namely described No. two connecting strap 320 outward openings connect the second screw rod 9 end is inclined-plane, outward opening is that inclined-plane facilitates the second screw rod 9 to enter, inside contact surface is plane, slip after conveniently entering, and plane is fixing more effective than fixing of male and fomale(M&F).
During use, second screw rod 9 one end is connected on the first screw rod 8, the other end is connected on the 3rd screw rod 10, because be over-surplus fit structure, add the effect of flexible assembly, after connecting, when rotating the first screw rod 8, the rotation of the second screw rod 9 and the 3rd screw rod 10 can be driven, do not affect the use of jack entirety.First screw rod 8 is provided with through hole 314, rocking bar 313 is put into through hole 314, rotating rocker 313, drive the rotation of the first screw rod 8, drive the rotation of the second screw rod 9 and the 3rd screw rod 10, rotate through the first active connection part 17 and second active connection part 18 of screw rod act on the first hold-down arm 1, second hold-down arm 2, the 3rd hold-down arm 3, the 4th hold-down arm 4, and each hold-down arm internally shrinks along screw rod 7 simultaneously, pallet 6 upwards rises, thus holds up object.
After use terminates, counter-rotation rocking bar 313, declines jack, is taken out by the second screw rod 9, and the 3rd screw rod 10 is rotated indentation jack from two interference fit junctions, then jack is put back to packing box preserve.
Claims (4)
1. car jack, comprise the first hold-down arm (1), second hold-down arm (2), 3rd hold-down arm (3), 4th hold-down arm (4), described first hold-down arm (1) is flexibly connected by the first active connection part (17) with the 3rd hold-down arm (3), described second hold-down arm (2) is flexibly connected by the second active connection part (18) with the 4th hold-down arm (4), first active connection part (17) and the second active connection part (18) are all passed by a screw rod (7), described first hold-down arm (1) and the second hold-down arm (2) support and connection place are provided with base (5), described 3rd hold-down arm (3) and the 4th hold-down arm (4) junction are provided with pallet (6), it is characterized in that: described screw rod (7) comprises the first screw rod (8), second screw rod (9) and the 3rd screw rod (10), described first screw rod (8) connects the second screw rod (9) one end and is provided with pipe link (119), described second screw rod (9) connects the first screw rod (8) one end and offers No. two grooves (120) coordinating described pipe link (119), it is No. two convex heads (112) that described second screw rod (9) connects the 3rd screw rod (10) end, described 3rd screw rod (10) connects No. three grooves (113) that the second screw rod (9) end offers cooperation second screw rod (9) No. two convex heads (112), No. three elastic partss (114) are provided with in described No. three grooves (113).
2. car jack as claimed in claim 1, it is characterized in that: No. two convex heads (112) of described second screw rod (9) are for square, described 3rd screw rod (10) No. three grooves (113) are for square, and described No. two convex heads (112) and described No. three grooves (113) can be combined closely.
3. car jack as claimed in claim 1, is characterized in that: described No. three elastic partss (114) are spring.
4. car jack as claimed in claim 3, is characterized in that: described spring maximum compressibility is 24 percent of free height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070421.7A CN103121648B (en) | 2013-03-06 | 2013-03-06 | Car jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070421.7A CN103121648B (en) | 2013-03-06 | 2013-03-06 | Car jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103121648A CN103121648A (en) | 2013-05-29 |
| CN103121648B true CN103121648B (en) | 2015-10-07 |
Family
ID=48452845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310070421.7A Active CN103121648B (en) | 2013-03-06 | 2013-03-06 | Car jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103121648B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679130Y (en) * | 2004-02-06 | 2005-02-16 | 侯兴福 | Automotive electric jack |
| CN201099595Y (en) * | 2007-09-04 | 2008-08-13 | 常熟通润汽车零部件有限公司 | Scissor jack |
| CN201169515Y (en) * | 2008-03-14 | 2008-12-24 | 严祖炎 | Dynamoelectric scissor jack |
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2013
- 2013-03-06 CN CN201310070421.7A patent/CN103121648B/en active Active
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| Publication number | Publication date |
|---|---|
| CN103121648A (en) | 2013-05-29 |
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