EP2297021B1 - Cric de voiture à parallélogramme articulé, pouvant être aplati de manière télescopique - Google Patents

Cric de voiture à parallélogramme articulé, pouvant être aplati de manière télescopique Download PDF

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Publication number
EP2297021B1
EP2297021B1 EP09780647A EP09780647A EP2297021B1 EP 2297021 B1 EP2297021 B1 EP 2297021B1 EP 09780647 A EP09780647 A EP 09780647A EP 09780647 A EP09780647 A EP 09780647A EP 2297021 B1 EP2297021 B1 EP 2297021B1
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EP
European Patent Office
Prior art keywords
spindle
carrying
arm
scissor jack
crossmember
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EP09780647A
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German (de)
English (en)
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EP2297021A1 (fr
Inventor
Dragan Milicic
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Audi AG
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Audi AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers

Definitions

  • the present invention relates to a jack according to the preamble of claim 1.
  • Object of the present invention is thus to provide a scissors jack, which is changeable for stowage without affecting the reliability in a smaller transport volume.
  • the scissors jack has a spindle, a foot, a support head, a traverse and a Spindelauf perhaps with a bore with an internal thread for receiving the spindle.
  • the foot and the support head are rotatably connected by means of a respective support arm with the traverse and the Spindelauf perhaps, wherein the support arms are coupled together in the region of the foot and the support head and / or in the region of the traverse and the spindle.
  • the spindle is coupled to the traverse and the Spindelauf mecanic, so that when turning the spindle of the distance between the spindle and Traverse changeable.
  • the support arms are telescopically variable in length, so that the scissors jack can be pushed together without compromising the functional reliability to a smaller volume in order to store it in the trunk of a vehicle to save space.
  • the spindle has a pulling direction, pressure direction and direction of rotation along its longitudinal axis, then it is particularly advantageous if the spindle is not coupled in the direction of compression, at least in the extended state, to reduce it with the traverse.
  • the spindle can thus dodge in the pressure direction, so that a simple reduction in volume of the scissors jack is effected.
  • the spindle has a length which is substantially less than or equal to twice the length of a support arm in the collapsed state.
  • a very small storage volume of the scissors jack can be effected, since the spindle in the collapsed state does not protrude beyond the spindle receiver or the traverse.
  • the traverse has a guide tube for at least partially receiving the spindle, wherein the guide tube is rotatably mounted in the crosshead coaxial with the longitudinal axis of the spindle, in particular by a ball bearing, and the spindle along its longitudinal axis within of the guide tube in an operating position and a stowed position is displaceable, wherein the spindle is coupled at least in the operating position with the guide tube in the pulling direction and direction, so that by rotating the guide tube, the distance between the spindle and Traverse transducer is changeable.
  • the spindle in the second storage position does not protrude beyond the end of the guide tube facing away from the spindle, so that the smallest possible storage volume of the scissors jack is favored.
  • the support arms consist of a first part and a second part, which are slidable into each other, so that the width of the scissor jack is substantially reduced by half.
  • the support arms in the extended state are lockable, so that unintentional pushing the support arms is excluded.
  • the locking element is a locking pin which in the extended state in the overlapping region of the first part with the second part, both of which each have at least one bore through the congruent superimposed Holes for locking is insertable.
  • the locking pin is connected by means of a flexible clamp with the support arm, so that in the unlocked state loss of the locking pin is largely excluded.
  • the guide tube having an inner radial wall and an outer radial wall in the longitudinal direction has a blind hole, with an internal polygon, in particular a hexagon socket, and a bore having a larger diameter than the spindle is provided.
  • the spindle at one end a Spindelmit facilitator has, which rotatably connects the spindle with the guide tube.
  • the scissors jack a spindle, Spindelauf 1969, trusses, ball bearings, a support head and a foot, wherein the two-part rotatable in the foot and in the support head and connected together with a pin per side support arms of the scissor jack are slidable and lockable, wherein the spindle with is provided with the Spindelmitauer, is axially displaceable and at the same time automatically moved in the guide tube during assembly and disassembly.
  • the scissor jack has in the delivery state a significantly smaller length and can thus be easily accommodated in the trunk of a passenger car.
  • the spindle 1 is provided with a thread and rotated slightly at one end, so that the Spindelmit supportive 2 can be pressed or welded. At the other end, the spindle 1 is locally squeezed 1 a.
  • the Spindelmit supportive 2 is a disc with a hole in the middle, which corresponds to the rotated part of the spindle.
  • the circumference of the spindle driver 2 is polygonal (for example, a hexagon) and corresponds to the internal polygon of the guide tube 3.
  • the guide tube 3 is a thin-walled polygonal tube (eg a hexagonal tube) which has on one side a bore 3d with a radial wall 3a inwards and on the other side a radial wall 3b to the outside.
  • the bore 3d is slightly larger than the diameter of the spindle 1.
  • the Spindelmit supportive 2 is supported on the inner radial wall 3a, wherein the spindle 1 with the Spindelmitillon dioxide 2 in the guide tube 3 can move axially.
  • a polygonal Allen key eg a hexagon wrench
  • the handwheel 5 On the outer radial wall 3b of the guide tube 3, the handwheel 5 is supported.
  • the outer polygon of the guide tube 3 fits together with the inner polygon of the handwheel 5. This transmits by hand on the handwheel 5, the torque on the guide tube 3 and continue on the Spindelmit supportive 2 on the spindle 1.
  • the guide tube 3 is with the outer wall 3b against the handwheel 5 and 3c with the levy against the traverse 6 of the Secured axial displacement.
  • the opposite side of the handwheel 5 serves as a support of the disc 4b of the ball bearing 4.
  • the other disc 4a of the ball bearing 4 is supported on the cross-member bearing side 6 from.
  • the assembly support arm-top consists of an approximately U-shaped support arm cross-top 10, an approximately U-shaped support arm support head 11 and two locking pins 14 which are provided with a web arm 14a.
  • the support arm-top 10 has at one end eyes 10d which mate axially with the holes of the traverse 6 and 7, wherein the holes 10c for the locking pins 14 are laterally on the legs.
  • the support arm-top 10 has a taper 10e in the central region.
  • the support arm support head 11 fits with the lower end in the support arm cross-top 10.
  • At the upper end of the legs are the eyes, which are provided with teeth 11 d and in the middle have the holes for the support head rivets 18.
  • These holes 11 b and 11 c of the support arm support head 11 axially fit with the holes 10 c of the support arm-top 10 together.
  • the arms webs 14a of the locking pins 14 are bent into the T-shaped opening 10a of the support arm-cross-top 10, so that the locking pins 14 are axially displaceable and secured against slipping. Once the locking pins 14 are fully inserted, they lock the holes 10c in the support arm-top 10 and the holes 11 b in the support arm support head 11 and thus allow the power flow between the two Tragarm kind 10 and 11.
  • the locking pins 14 are also in the T -shaped opening 10a rotatable so that one can lock the support arm-top 10 and the support arm support head 11 during the working cycles. Outwardly axially displaced locking pins 14 lock the holes 11 b of the support arm support head 11 is no longer and a collapse of both support arm 10 and 11 is possible.
  • the two holes of the support arm-cross-top then fit axially on the holes 11 c, so that a locking of the two support arms 10 and 11 in the collapsed state is possible.
  • the locking pins 14 must be compressed and thus pushed axially inwards. Subsequently, they are rotated in the T-shaped opening 10a (section DD).
  • the assembly support arm-bottom consists of an approximately U-shaped support arm foot 12, an approximately U-shaped support arm cross-down 13 and two locking pins 14, which are provided with a web arm 14.
  • At the lower end of the legs of the support arm foot 12 are the eyes that are provided with teeth 12 d and in the middle have the holes for the foot rivets 17.
  • Laterally on the legs of the support arm-foot 12 are the holes 12c for the locking pins 14, and above a T-shaped opening 12a with a collar 12b for the bent arms webs 14a of the locking pins 14.
  • the locking pins 14 lock the holes 13b and 12c in the support arm-traverse-bottom 13 and support arm foot 12 and thus allow the power flow between the two Tragarm kind 12 and 13.
  • the locking pins 14 are also in the T-shaped opening 12a rotatable so that the support arm Traverse-down 13 and the support arm foot 12 are locked during the working cycles.
  • Outwardly axially displaced locking pins 14 lock the holes 13b of the support arm-Traverse-bottom 13 is no longer and a collapse of both support arm 12 and 13 is possible.
  • the support arm-bottom 13 has a taper 13d in the central region. Through the taper 13d there are no complete guide grooves 13a in the support arm-Traverse-bottom 13.
  • the Traverse bearing side 6 is U-shaped, with a hole in the middle and two holes on the legs.
  • the rivet compression rings 9 are pushed in and pressed against the eyes 10d and 13c of the support arms 10 and 13 (FIG. see section FF).
  • the assembly guide tube is inserted into the central bore of the traverse bearing side 6 and with a pressing tool locally against slipping slightly deformed 3c (see Fig. 10 ).
  • the guide tube 3 in the cross-member bearing side 6 is rotatable and axially secured against slipping.
  • the assembly support arm-up and the assembly support arm-down are rotatable about the axis of the cross-beam bearing side 6, and axially secured against slipping.
  • the traverse threaded side 7 is U-shaped, with a hole in the middle and two holes on the legs.
  • crossbar bearing side 6 with the assembly support arm-up and the assembly support arm-down, and the crossbar threaded side 7 with the assembly support arm-up and the assembly support arm-down, are with the foot 15 below and with the Support head 16 above rotatably connected by foot rivets 17 and support head rivets 18.
  • the spindle 1 is inserted with the Spindelmit supportive 2 through the guide tube 3 and screwed by the rotation of the guide tube 3 via the Spindelmit supportive 2 in the Spindelaufterrorism 8 until the Spindelmitstream 2 leans on the inner radial wall 3a of the guide tube 3 , Thereafter, the spindle end 1a is deformed outside the Spindelauf alone with a pressing tool against unscrewing.
  • the finished jack is raised and lowered by turning the spindle 1 by means of a crank, in particular a polygonal Allen key, which fits into the end of the guide tube 3, or by means of the handwheel 5.
  • a crank in particular a polygonal Allen key
  • the other component of the force acts axially on the guide tube 3, the Spindelmit facilitator 2 and the spindle 1 on the Spindelauf repertoire 8.
  • both trusses 6 and 7 with the assembly bracket up and the assembly bracket down and the jack lifts the load.
  • FIG. 25 and 26 An alternative embodiment of the locking elements are from the Figures 25 and 26 , refer to.
  • the locking pins 14 are riveted with a bracket 19 to an assembly, which is then riveted together with the two support arms 10,13 and 11, 12.
  • the support arms 10,13 and 11, 12 are guided during displacement by a rivet 20 in the middle of the bracket 19, whereby the lateral recesses 11 a, 13 a omitted.
  • the collar 10b, 12b on the support arms 10, 12 are also no longer necessary.
  • the support arm support head 11 and support arm-eye-down 13 are provided with guide recesses 21.
  • the support arm-eye-down 13 is provided with two holes in the eye, s that you can lock the locking pins 14 in the collapsed state and down.
  • Support arm-eye-top 10 and support arm-eye-down 13 are no longer tapered, but have parallel sides. Thus, the locking of the locking pins 14 in the collapsed state is possible.
  • the bracket 19a, 19b is in two parts in this alternative embodiment. Furthermore, the brackets 19a, 19b are rigid, so that the locking pins 14 are translationally guided during locking and unlocking.
  • the locking pins 14 additionally have magnets 23a, 23b which are magnetically attracted to the support arms 12, 11 be so that unintentional unlocking of the support arms 12, 11, 10, 13 and a loss of the locking pins 14 is largely excluded.
  • the guide tube 3 is polygonal in the region of the inner wall 3a and executed in the region of the cross-member bearing side 6 round.
  • the guide tube 3 has a slightly smaller diameter in the region of the traverse bearing side 6, so that the traverse bearing side 6 can be supported and the pinch 3c is dispensed with.
  • the outer wall 3b is eliminated and is replaced with a disc 22 having a polygonal and inside a round bore on the circumference. It is welded to the guide tube 3, after the cross-beam bearing side 6, the collar sleeves and the ball bearing 4 are mounted.
  • the Nietpressringe be replaced by the collar sleeves, since no deformation of the sleeve after mounting the guide tube 3 in the Traverse bearing side 6 is necessary.
  • the collar sleeves are thus blocked, it is now only a minimal axial movement to the guide tube 3 possible, with which the guide tube 3 can rotate freely.
  • the spindle (1) is used with the Spindelmit supportive 2 in the guide tube 3, in the Spindelauf perhaps 8, in particular a plastic nut, screwed in and then squeezed slightly at the end 1 a.
  • the handwheel 5 which has a polygon on the circumference to allow the torque transfer, mounted and then slightly squeezed.
  • the handwheel 5 has on the other side a hexagon for the wheel wrench, with which you can lift the jack by the rotation of the handwheel 5.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Tents Or Canopies (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Automatic Assembly (AREA)

Claims (24)

  1. Cric de voiture à parallélogramme articulé présentant
    - une broche (1), un pied (15), une tête porteuse (16), une traverse (6) et un receveur de broche (8) qui présente un perçage avec un filetage intérieur pour la réception de la broche (1), dans lequel
    - le pied (15) et la tête porteuse (16) sont respectivement reliés de manière rotative à l'aide d'un bras porteur (10, 11, 12, 13) à la traverse (6) et au receveur de broche (8), et
    - les bras porteurs (10, 11, 12, 13) sont couplés les uns aux autres dans la zone du pied (15) et de la tête porteuse (16) et/ou dans la zone de la traverse (6) et du receveur de broche (8), et
    - la broche (1) est couplée à la traverse (6) et au receveur de broche (8) de sorte que lors de la rotation de la broche (1), la distance entre le receveur de broche (8) et la traverse (6) peut être modifiée,
    caractérisé en ce que
    - la longueur des bras porteurs (10, 11 et 12, 13) peut être modifiée de manière télescopique de sorte que le cric de voiture à parallélogramme articulé peut être rassemblé à un volume moindre notamment pour le rangement.
  2. Cric de voiture à parallélogramme articulé selon la revendication précédente, caractérisé en ce que la broche (1) présente un axe longitudinal, le long duquel la broche (1) présente un sens de traction, un sens de pression et un sens de rotation et n'est pas couplée à l'état déployé à la traverse (6) dans le sens de pression de sorte que la broche peut être automatiquement déplacée dans le sens de pression lors du rassemblement.
  3. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la broche (1) présente une longueur qui est sensiblement inférieure ou identique à la double longueur d'un bras porteur à l'état rassemblé.
  4. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la traverse (6) présente un tube de guidage (3) pour la réception au moins partielle de la broche (1), dans lequel le tube de guidage (3) est logé de manière rotative dans la traverse coaxialement à l'axe longitudinal de la broche (1), en particulier par un roulement à billes (4), et la broche (1) peut être déplacée le long de son axe longitudinal dans le tube de guidage (3) dans une position de fonctionnement et une position de rangement, dans lequel la broche (1) est couplée au moins dans la position de fonctionnement au tube de guidage (3) dans le sens de traction et le sens de rotation de sorte que la distance entre le receveur de broche (8) et la traverse (6) peut être modifiée par la rotation du tube de guidage (3).
  5. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la broche (1) dans la seconde position de rangement ne dépasse pas de l'extrémité, éloignée de la broche (1), du tube de guidage (3).
  6. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que les bras porteurs se composent d'une première partie (10, 12) et d'une seconde partie (11, 13) pouvant être déplacées l'une dans l'autre.
  7. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que les bras porteurs peuvent être verrouillés à l'état déployé, notamment à l'aide d'un élément de verrouillage.
  8. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que l'élément de verrouillage est une tige de verrouillage (14) qui peut être introduite à l'état déployé dans la zone de chevauchement de la première partie (10, 12) avec la seconde partie (11, 13) qui présentent toutes deux respectivement au moins un perçage, dans les perçages congruents se trouvant l'un au-dessus de l'autre en vue du verrouillage.
  9. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la tige de verrouillage (14) est reliée à l'aide d'une attache (19) qui est notamment flexible, au bras porteur de sorte qu'il est largement exclu de perdre la tige de verrouillage (14).
  10. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que le tube de guidage (3) avec une paroi radiale intérieure (3a) et une paroi radiale extérieure (3b) dans le sens longitudinal présente un trou borgne qui est pourvu de plusieurs pans creux, en particulier d'un six pans creux, et d'un perçage (3d) qui présente un diamètre supérieur à celui de la broche (1).
  11. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la broche (1) présente sur une extrémité un entraîneur de broche (2) qui couple la broche (1) au tube de guidage (3) au moins dans la position de fonctionnement dans le sens de rotation et de traction.
  12. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que l'entraîneur de broche (2) est un polygone externe, en particulier un hexagone externe qui coagit avec les plusieurs pans creux du tube de guidage (3).
  13. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce qu'un volant à main (5) est relié de manière solidaire en rotation au tube de guidage (3), en particulier de telle manière que le tube de guidage (3) est un polygone externe, sur lequel le volant à main (5) loge avec un six pans creux, dans lequel le volant à main (5) s'appuie sur la paroi radiale extérieure (3b) du tube de guidage (3) et un disque (4a) du roulement à billes (4).
  14. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que l'assemblage supérieur du bras porteur se compose d'une traverse supérieure à peu près en forme de U (10), d'une tête porteuse à peu près en forme de U (11) et de deux tiges de verrouillage mobiles axialement et rotatives (14), dans lequel la tête porteuse (11) peut être déplacée dans la traverse supérieure (10).
  15. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que l'assemblage inférieur du bras porteur se compose d'un pied à peu près en forme de U (12), d'une traverse inférieure à peu près en forme de U (13) et de deux tiges de verrouillage (14) mobiles axialement et rotatives, dans lequel la traverse inférieure (13) peut être déplacée dans le pied (12).
  16. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la traverse supérieure (10) et/ou le pied (12) présentent une surface médiane, des branches et sur une de leurs extrémités des oeillets (10d) et un perçage (10c) se situe sur les branches et une ouverture en forme de T (10a) se situe sur la surface médiane.
  17. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la tête porteuse (11) et/ou la traverse inférieure (13) présentent des branches et sur une de leurs extrémités des oeillets avec des dents (11d), dans lequel des cavités de guidage (11a) plates avec des perçages (11b, 11c) se situent sur les branches.
  18. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la tige de verrouillage (14) présente un bras de nervure (14a), dans lequel le bras de nervure (14a) s'engage dans l'ouverture en forme de T (10a, 12a).
  19. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que le tube de guidage (3) présente un dégagement (3c) dans la zone du côté de palier de traverse (6).
  20. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la traverse supérieure (10) et/ou la traverse inférieure (13) présente un rétrécissement (10e).
  21. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que les branches du pied (12) sont pliées vers l'intérieur à peu près à angle droit (12d).
  22. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que l'ouverture en forme de T (10a, 12a) présente un collet (10b, 12b).
  23. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la broche (1) présente un écrasement (1a) au niveau de l'extrémité sur le côté fileté de sorte qu'une sortie du receveur de broche par rotation est largement exclue.
  24. Cric de voiture à parallélogramme articulé selon l'une ou plusieurs quelconques des revendications précédentes, caractérisé en ce que la broche (1) est logée de manière à modifier la longueur avec l'entraîneur de broche (2).
EP09780647A 2008-07-15 2009-07-15 Cric de voiture à parallélogramme articulé, pouvant être aplati de manière télescopique Active EP2297021B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008040432 2008-07-15
PCT/EP2009/059083 WO2010007104A1 (fr) 2008-07-15 2009-07-15 Cric de voiture à parallélogramme articulé, pouvant être aplati de manière télescopique

Publications (2)

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EP2297021A1 EP2297021A1 (fr) 2011-03-23
EP2297021B1 true EP2297021B1 (fr) 2012-03-28

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US (1) US8602391B2 (fr)
EP (1) EP2297021B1 (fr)
CN (1) CN102076597B (fr)
AT (1) ATE551291T1 (fr)
ES (1) ES2384828T3 (fr)
WO (1) WO2010007104A1 (fr)

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US11353084B2 (en) * 2013-03-15 2022-06-07 Clearmotion Acquisition I Llc Rotary actuator driven vibration isolation
CN103318798A (zh) * 2013-07-11 2013-09-25 南通市通润汽车零部件有限公司 一种用于剪式千斤顶的铰链螺母组合体
CN105417428A (zh) * 2015-12-11 2016-03-23 重庆长安空港汽车配件有限责任公司 一种机械式千斤顶
TR201600960A2 (tr) * 2016-01-23 2016-06-21 Arikan Kriko Ve Makina Sanayi Ve Ticaret Anonim Sirketi Kri̇kolar i̇çi̇n kaldirma başliği
ITUA20161383A1 (it) * 2016-03-04 2017-09-04 Brasola S R L Sollevatore per veicoli.
CN109422207A (zh) * 2017-08-24 2019-03-05 福特环球技术公司 剪式千斤顶
CN108726419A (zh) * 2018-07-03 2018-11-02 上海宝山大陆汽车配件有限公司 一种设有梅花手柄的剪式千斤顶
US10624451B2 (en) * 2018-09-11 2020-04-21 Amor Bhattacharya Therapy desk
RU2743238C1 (ru) * 2020-01-27 2021-02-16 Евгений Александрович Оленев Автомобильный домкрат
CN112249954B (zh) * 2020-10-16 2021-12-17 周建威 一种稳定性高且方便使用的新能源汽车用剪式千斤顶
CN113756461B (zh) * 2021-08-20 2023-06-02 北京工业大学 具有位移放大功能的底角阻尼器及摇摆耗能的装配式剪力墙
CN114261917B (zh) * 2021-12-01 2023-08-22 华北理工大学 一种机械式千斤顶

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EP2297021A1 (fr) 2011-03-23
CN102076597B (zh) 2014-06-18
US20110114905A1 (en) 2011-05-19
ES2384828T3 (es) 2012-07-12
US8602391B2 (en) 2013-12-10
ATE551291T1 (de) 2012-04-15
WO2010007104A1 (fr) 2010-01-21

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