Vehicle lifting machine

Abstract

The invention aims at disclosing a vehicle lifting machine, and relates to the technical field of vehicle lifting machines, the vehicle lifting machine comprises a first cavity and a second cavity which are arranged in parallel; a first lifting platform and a second lifting platform are arranged in the first cavity in a stacked mode, the first lifting platform has the lifting height flush with the top face of the first cavity, and the second lifting platform has the descending height flush with the top face of the first cavity; a third lifting platform and a fourth lifting platform are arranged in the second cavity in a stacked mode, the third lifting platform has the lifting height flush with the top face of the second cavity, and the fourth lifting platform has the descending height flush with the top face of the second cavity; the device has the technical effects that when the four lifting platforms all descend to the lowest position, the second lifting platform is flush with the top surface of the first cavity, and the fourth lifting platform is flush with the top surface of the second cavity; when the four lifting platforms all ascend to the highest position, the first lifting platform is flush with the top face of the first cavity, and the third lifting platform is flush with the top face of the second cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lifts, and in particular to a vehicle lift. Background Art

[0002] Vehicle lifts are indispensable equipment for repair and maintenance, and scissor lifts are one of them. After the scissor lift lifts the vehicle, the operator can move in the front and rear directions of the vehicle, but the left and right directions of the vehicle are blocked by the scissor lift components, which not only affects the operator's passage, but also affects the operating space for replacing large parts.

[0003] In view of this, it is necessary to develop a vehicle lift to overcome the above-mentioned defects. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to disclose a vehicle lift.

[0005] To achieve the above-mentioned object of the invention, the present invention provides a vehicle lift, comprising two lifting platforms which are synchronously lifted and arranged in parallel, a first lifting assembly and a second lifting assembly are respectively arranged at both ends of each lifting platform, and the first lifting assembly and the second lifting assembly are symmetrically arranged;

[0006] The first lifting assembly includes a first articulated arm, a second articulated arm, a third articulated arm, a fourth articulated arm, a fifth articulated arm, a sixth articulated arm, a seventh articulated arm, and an eighth articulated arm;

[0007] The first end of the first articulated arm is hinged to the ground, the first end of the second articulated arm is hinged to the ground, the first articulated arm is parallel to the second articulated arm, and a first support column is provided between the first articulated arm and the second articulated arm;

[0008] The first end of the third articulated arm is hinged to the first end of the lifting platform, the first end of the fourth articulated arm is hinged to the first end of the lifting platform, the third articulated arm is parallel to the fourth articulated arm, and a second support column is arranged between the third articulated arm and the fourth articulated arm;

[0009] The second end of the first articulated arm and the second end of the third articulated arm are articulated at a first articulated point, and the second end of the second articulated arm and the second end of the fourth articulated arm are articulated at a second articulated point;

[0010] The first end of the fifth articulated arm is hinged to the first articulated arm to form a third articulated point, the first end of the sixth articulated arm is hinged to the second articulated arm to form a fourth articulated point, and the fifth articulated arm is parallel to the sixth articulated arm;

[0011] The first end of the seventh articulated arm is slidably disposed on the lifting platform, the first end of the eighth articulated arm is slidably disposed on the lifting platform, and the seventh articulated arm is parallel to the eighth articulated arm;

[0012] The second end of the seventh articulated arm and the second end of the fifth articulated arm are hinged at a fifth articulated point, and the second end of the eighth articulated arm and the second end of the sixth articulated arm are hinged at a sixth articulated point;

[0013] The seventh articulated arm and the third articulated arm are articulated at a seventh articulated point, and the eighth articulated arm and the fourth articulated arm are articulated at an eighth articulated point;

[0014] The first hydraulic cylinder assembly drives the second supporting column to rise and fall with the first supporting column as a fulcrum.

[0015] Preferably, the center lines of the first articulated arm, the third articulated arm, the fifth articulated arm and the seventh articulated arm form a first parallelogram;

[0016] The connecting lines of the first hinge point, the third hinge point, the fifth hinge point and the seventh hinge point form a second parallelogram.

[0017] Preferably, the first hydraulic cylinder assembly comprises a lifting cylinder, a first locking member and a second locking member, the first locking member is hinged to the first supporting column, and the second locking member is hinged to the second supporting column;

[0018] The lifting cylinder comprises a cylinder barrel, a telescopic rod and a U-shaped frame, and the first locking member is mounted on the U-shaped frame;

[0019] The first locking member includes a first locking tooth, and the second locking member is provided with a second locking tooth;

[0020] The second locking member is provided with a locking cylinder, and the locking cylinder drives the second locking member to swing around the second supporting column with the U-shaped frame as a fulcrum and causes the second locking tooth to engage with or disengage from the first locking tooth.

[0021] Preferably, first locking members are respectively provided on both sides of the U-shaped frame;

[0022] The second locking member includes a U-shaped portion and a first arm and a second arm disposed on the U-shaped portion, wherein the first arm and the second arm are both hinged to the second supporting column;

[0023] The U-shaped portion straddles the U-shaped frame, and second locking teeth are respectively arranged on both sides of the U-shaped portion.

[0024] Preferably, a hollow portion and an L-shaped bracket are arranged on the side of the hollow portion in the U-shaped portion, and a micro switch is installed on the L-shaped bracket, and the micro switch is aligned with the U-shaped bracket.

[0025] Preferably, a first slider is arranged between the first end of the seventh articulated arm and the lifting platform, and a second slider is arranged between the first end of the eighth articulated arm and the lifting platform.

[0026] Preferably, a movable track is arranged on the inner side of the lifting platform.

[0027] Preferably, a pull-wire sensor is provided on the second supporting column, and a pull-wire extending from the pull-wire sensor is connected to the cylinder.

[0028] Preferably, a wear reducing plate is provided on the U-shaped frame.

[0029] Based on the same inventive principle, in order to achieve the above-mentioned inventive object, the present invention also provides a vehicle lift.

[0030] It comprises a first cavity and a second cavity arranged in parallel;

[0031] A first lifting platform and a second lifting platform are stacked in the first cavity, the second lifting platform is straddling the first lifting platform, the first lifting platform has a lifting height that is flush with the top surface of the first cavity, the lifting height of the second lifting platform is greater than the lifting height of the first lifting platform, the second lifting platform has a lowering height that is flush with the top surface of the first cavity, and the lowering height of the first lifting platform is lower than the lowering height of the second lifting platform;

[0032] A third lifting platform and a fourth lifting platform are stacked in the second cavity, the fourth lifting platform is straddled on the third lifting platform, the third lifting platform has a lifting height flush with the top surface of the second cavity, the lifting height of the fourth lifting platform is greater than the lifting height of the third lifting platform, the fourth platform has a descending height flush with the top surface of the second cavity, and the descending height of the third lifting platform is lower than the descending height of the fourth platform;

[0033] The top surface of the first cavity and the top surface of the second cavity are in the same horizontal plane;

[0034] The second lifting platform and the fourth lifting platform are raised and lowered synchronously.

[0035] Compared with the prior art, the technical effects of the present invention are as follows:

[0036] (1) A first lifting platform and a second lifting platform are stacked in the first cavity, and a third lifting platform and a fourth lifting platform are stacked in the second cavity. When the first lifting platform, the second lifting platform, the third lifting platform and the fourth lifting platform are all lowered to the lowest position, the second lifting platform is flush with the top surface of the first cavity, and the fourth lifting platform is flush with the top surface of the second cavity. When the first cavity and the second cavity are set on the ground, the second lifting platform and the fourth lifting platform can be flush with the ground, which is convenient for vehicles to travel on the second lifting platform and the fourth lifting platform; when the first lifting platform, the second lifting platform, the third lifting platform and the fourth lifting platform are all raised to the highest position, the first lifting platform is flush with the top surface of the first cavity, and the third lifting platform is flush with the top surface of the second cavity. When the first cavity and the second cavity are set on the ground, the first lifting platform and the third lifting platform can be flush with the ground and just cover the first cavity and the second cavity. When the operator shuttles under the second platform and the fourth platform, he will not fall into the first cavity and the second cavity.

[0037] (2) A first lifting assembly and a second lifting assembly are respectively arranged at both ends of each lifting platform, and there is sufficient space between the first lifting assembly and the second lifting assembly for an operator to walk or carry large-sized objects; the first lifting assembly and the second lifting assembly are symmetrically arranged and serve as fulcrums for each other, forming a power assembly that stably supports the lifting and lowering of the lifting platform; taking the first lifting assembly as an example, it includes a first hydraulic cylinder assembly and a plurality of articulated arms driven to rise and fall by the first hydraulic cylinder assembly, and the plurality of articulated arms constitute the support and lifting structure of the lifting platform; the third articulated arm and the seventh articulated arm form an X shape and are supported at the end of the lifting platform, and the fourth articulated arm and the seventh articulated arm form an X shape and are supported at the end of the lifting platform, so that the end of the lifting platform has a large support range, thereby effectively increasing the load weight of the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a three-dimensional structural schematic diagram of the vehicle lift of the present invention in a non-raised state.

[0040] Figure 2 It is a top view schematic diagram of the vehicle lift of the present invention.

[0041] Figure 3 The present invention Figure 2 Schematic diagram of the cross-sectional structure at AA.

[0042] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure at point B.

[0043] Figure 5 It is a three-dimensional structural schematic diagram of the vehicle lift of the present invention in a raised state.

[0044] Figure 6 It is a schematic diagram of the three-dimensional structure of the first hydraulic cylinder assembly of the present invention.

[0045] Figure 7 It is a three-dimensional structural schematic diagram of the first hydraulic cylinder assembly of the present invention.

[0046] Figure 8 It is a schematic diagram of the three-dimensional structure of the first hydraulic cylinder assembly of the present invention.

[0047] Fig. 9 It is a schematic cross-sectional structural diagram of the first hydraulic cylinder assembly of the present invention.

[0048] Fig.10 It is a schematic diagram of the three-dimensional structure of the first lifting assembly or the second lifting assembly of the present invention.

[0049] Fig.11 It is a schematic diagram of the main structure of the first lifting assembly or the second lifting assembly of the present invention.

[0050] Fig.12 It is a schematic diagram of the three-dimensional structure of the first lifting platform or the third lifting platform of the present invention.

[0051] Fig.13 It is a schematic cross-sectional structural diagram of the moving track and the moving trolley of the present invention.

[0052] Among them, 1, lifting platform; 11, the first end of the lifting platform; 12, the first hinge point; 13, the second hinge point; 14, the third hinge point; 15, the fourth hinge point; 16, the fifth hinge point; 17, the sixth hinge point; 18, the seventh hinge point; 19, the eighth hinge point; 111, the first cavity; 1111, the first lifting platform; 1112, the second lifting platform; 1113, the first X-type scissor lifting assembly; 1114, the second X-type scissor lifting assembly; 112, the second cavity; 1121, the third lifting platform; 1122, the Four lifting platforms; 113, third cavity; 2, first lifting assembly; 21, first articulated arm; 211, first end of first articulated arm; 212, second end of first articulated arm; 22, second articulated arm; 221, first end of second articulated arm; 222, second end of second articulated arm; 23, third articulated arm; 231, first end of third articulated arm; 232, second end of third articulated arm; 24, fourth articulated arm; 241, first end of fourth articulated arm; 242, second end of fourth articulated arm; 25, fifth articulated arm; 251, fifth The first end of the articulated arm; 252, the second end of the fifth articulated arm; 26, the sixth articulated arm; 261, the first end of the sixth articulated arm; 262, the second end of the sixth articulated arm; 27, the seventh articulated arm; 271, the first end of the seventh articulated arm; 272, the second end of the seventh articulated arm; 273, the first slider; 28, the eighth articulated arm; 281, the first end of the eighth articulated arm; 282, the second end of the eighth articulated arm; 283, the second slider; 3, the second lifting assembly; 4, the first support column; 5, the second support column; 51, the pull rope sensor; 5 2. Pull rope; 6. First hydraulic cylinder assembly; 61. Lifting cylinder; 611. Cylinder barrel; 612. Telescopic rod; 613. U-shaped frame; 6131. ​​Wear-reducing plate; 62. First locking member; 621. First locking tooth; 63. Second locking member; 631. Second locking tooth; 632. Locking cylinder; 633. U-shaped portion; 6331. Hollow portion; 6332. L-shaped bracket; 6333. Micro switch; 634. First arm; 635. Second arm; 7. First parallelogram; 8. Second parallelogram; 9. Moving track; 10. Moving trolley. DETAILED DESCRIPTION

[0053] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Embodiment 1

[0056] Ginseng Figures 1 to 12 , this embodiment discloses a specific implementation of a vehicle lift.

[0057] Vehicle lift, reference Figures 1 to 12, comprising two lifting platforms 1 which are synchronously lifted and arranged in parallel, a first lifting assembly 2 and a second lifting assembly 3 are respectively arranged at both ends of each lifting platform 1, the first lifting assembly 2 and the second lifting assembly 3 are symmetrically arranged, and a space for operating personnel and heavy objects to pass through is provided between the first lifting assembly 2 and the second lifting assembly 3; the first lifting assembly 2 comprises a first articulated arm 21, a second articulated arm 22, a third articulated arm 23, a fourth articulated arm 24, a fifth articulated arm 25, a sixth articulated arm 26, a seventh articulated arm 27, and an eighth articulated arm 28; a first end 211 of the first articulated arm is hinged to the ground, and a first end 221 of the second articulated arm is hinged to the ground The first articulated arm 21 is parallel to the second articulated arm 22, and a first support column 4 is arranged between the first articulated arm 21 and the second articulated arm 22; the first end 231 of the third articulated arm is hinged to the first end 11 of the lifting platform, the first end 241 of the fourth articulated arm is hinged to the first end 11 of the lifting platform, the third articulated arm 23 is parallel to the fourth articulated arm 24, and a second support column 5 is arranged between the third articulated arm 23 and the fourth articulated arm 24; the second end 212 of the first articulated arm and the second end 232 of the third articulated arm are hinged to the first articulation point 12, and the second end 222 of the second articulated arm and The second end 242 of the fourth articulated arm is hinged to the second articulated point 13; the first end 251 of the fifth articulated arm is hinged to the first articulated arm 21 to form a third articulated point 14, the first end 261 of the sixth articulated arm is hinged to the second articulated arm 22 to form a fourth articulated point 15, the fifth articulated arm 25 is parallel to the sixth articulated arm 26; the first end 271 of the seventh articulated arm is slidably disposed below the lifting platform 1, the first end 281 of the eighth articulated arm is slidably disposed below the lifting platform 1, the seventh articulated arm 27 is parallel to the eighth articulated arm 28, the first end 271 of the seventh articulated arm and the lifting A first slider 273 is set between the lifting platform 1, and a second slider 283 is set between the first end 281 of the eighth articulated arm and the lifting platform 1; the second end 272 of the seventh articulated arm and the second end 252 of the fifth articulated arm are hinged at the fifth articulation point 16, and the second end 282 of the eighth articulated arm and the second end 262 of the sixth articulated arm are hinged at the sixth articulation point 17; the seventh articulated arm 27 and the third articulated arm 23 are hinged at the seventh articulation point 18, and the eighth articulated arm 28 and the fourth articulated arm 24 are hinged at the eighth articulation point 19; the first hydraulic cylinder assembly 6 drives the second support column 5 to rise and fall with the first support column 4 as a fulcrum.

[0058] Specifically, a first lifting assembly 2 and a second lifting assembly 3 are respectively arranged at both ends of each lifting platform 1, and there is enough space between the first lifting assembly 2 and the second lifting assembly 3 for an operator to walk or carry large-sized objects; the first lifting assembly 2 and the second lifting assembly 3 are symmetrically arranged and serve as fulcrums for each other, forming a power assembly that stably supports the lifting and lowering of the lifting platform; taking the first lifting assembly 2 as an example, it includes a first hydraulic cylinder assembly 6 and a plurality of articulated arms driven to lift and lower by the first hydraulic cylinder assembly 6, the plurality of articulated arms are a first articulated arm 21, a second articulated arm 22, a third articulated arm 23, a fourth articulated arm 24, a fifth articulated arm 25, a sixth articulated arm 26, a seventh articulated arm 27, and an eighth articulated arm 28, and the plurality of articulated arms constitute the support and lifting structure of the lifting platform, and the center lines of the first articulated arm 21, the third articulated arm 23, the fifth articulated arm 25 and the seventh articulated arm 27 form a Fig.11 The center lines of the first parallelogram 7, the second articulated arm 22, the fourth articulated arm 24, the sixth articulated arm 26 and the eighth articulated arm 28 form the first parallelogram 7 of the same structure, and the connecting line of the first hinge point 12, the third hinge point 14, the fifth hinge point 16 and the seventh hinge point 18 forms Fig.11 The second parallelogram 8 shown, the connecting lines of the second hinge point 13, the fourth hinge point 15, the sixth hinge point 17 and the eighth hinge point 19 form a second parallelogram 8 of the same structure; the first parallelogram 7 and the second parallelogram 8 form a structure for stably supporting the lifting platform 1; the third articulated arm 23 and the seventh articulated arm 27 form an X shape and are supported at the end of the lifting platform 1, and the fourth articulated arm 24 and the eighth articulated arm 28 form an X shape and are supported at the end of the lifting platform, so that the end of the lifting platform has a large supported range, which effectively increases the load weight of the lifting platform 1.

[0059] In order to facilitate the placement and movement of heavy objects between the two lifting platforms 1, a moving track 9 is provided on the inner side of each lifting platform 1, see Fig.13 A mobile trolley 10 is installed on two mobile rails 9, and wheels on both sides of the mobile trolley 10 move along the mobile rails 9. Major parts that need to be replaced are placed on the mobile trolley 10, such as an engine or a battery. This can greatly reduce the workload and improve the efficiency of repair or maintenance.

[0060] See also Figures 5 to 9As shown, the first hydraulic cylinder assembly 6 includes a lifting cylinder 61, a first locking member 62 and a second locking member 63, the first locking member 62 is hinged to the first support column 4, and the second locking member 63 is hinged to the second support column 5; the lifting cylinder 61 includes a cylinder barrel 611, a telescopic rod 612 and a U-shaped frame 613, the first locking member 62 is installed on the U-shaped frame 613, and the first locking members 62 are respectively arranged on both sides of the U-shaped frame 613, and the U-shaped frame 613 and the first locking member 62 are both hinged The first support column 4 is provided with a cylinder 611 installed in a U-shaped frame 613. A wear-reducing plate 6131 is provided on the U-shaped frame 613. The wear-reducing plate 6131 can reduce the wear caused by repeated operation of the locking cylinder 632. The first locking member 62 includes a first locking tooth 621. The second locking member 63 is provided with a second locking tooth 631. The first locking tooth 621 and the second locking tooth 631 are arranged in cooperation. A locking cylinder 632 is provided on the second locking member 63. The locking cylinder 632 uses the U-shaped frame 613 as a fulcrum. The second locking member 63 is driven to swing around the second supporting column 5 and the second locking tooth 631 is engaged with or disengaged from the first locking tooth 621; the second locking member 63 includes a U-shaped portion 633 and a first arm 634 and a second arm 635 provided on the U-shaped portion 633, the first arm 634 and the second arm 635 are both hinged to the second supporting column 5, the U-shaped portion 633 straddles the U-shaped frame 633, and the second locking teeth 631 are respectively provided on both sides of the U-shaped portion 633, and the locking cylinder 632 is installed on the U-shaped part 633; ​​during the lifting and lowering process of the lifting platform 1, the locking cylinder 632 drives the U-shaped part 633 to swing with the U-shaped frame 613 as a fulcrum, so that the first locking tooth 621 and the second locking tooth 631 move away from each other and disengage, thereby ensuring the smooth lifting and lowering of the lifting platform 1; when the lifting platform 1 is lifted to the predetermined position, the locking cylinder 632 drives the U-shaped part 633 to swing back with the U-shaped frame 613 as a fulcrum, so that the first locking tooth 621 and the second locking tooth 631 move closer to each other and engage, thereby locking the lifting platform 1 at the predetermined position.

[0061] See also Figures 5 to 9 As shown, in order to timely sense the matching state of the first locking tooth 621 and the second locking tooth 631, a hollow portion 6331 and an L-shaped bracket 6332 are arranged on the side of the hollow portion 6331, and a micro switch 6333 is installed on the L-shaped bracket 6332, and the micro switch 6333 is aligned with the U-shaped frame 613; when the first locking tooth 621 and the second locking tooth 631 are close to each other and meshed, the micro switch 6333 is triggered to control the hydraulic system to stop supplying oil to the lifting cylinder 61; when the first locking tooth 621 and the second locking tooth 631 are away from each other and disengaged, the micro switch 6333 controls the hydraulic system to supply or unload oil to the lifting cylinder 61.

[0062] See also Figure 6As shown, a pull rope sensor 51 is provided on the second support column 5, and the pull rope 52 extended from the pull rope sensor 51 is connected to the cylinder 611. During the lifting process, the telescopic rod 612 is continuously extended, driving the pull rope 52 to be gradually pulled out and change its angle with the horizontal plane. Each position of the pull rope 52 corresponds to a lifting height of the lifting platform 1, thereby realizing the lifting height of the lifting platform 1 being sensed by the pull rope sensor 51.

[0063] Embodiment 2

[0064] See also Figures 1 to 5 , Fig.12 A vehicle lift comprises a first cavity 111 and a second cavity 112 arranged in parallel, the first cavity 111 and the second cavity 112 are preferably arranged in the ground, and the top surfaces of the first cavity 111 and the second cavity 112 are preferably flush with the ground; a first lifting platform 1111 and a second lifting platform 1112 are stacked in the first cavity 111, the second lifting platform 1112 straddles the first lifting platform 1111, the first lifting platform 1111 has a lifting height flush with the top surface of the first cavity 111, the lifting height of the second lifting platform 1112 is greater than the lifting height of the first lifting platform 1111, the second lifting platform 1112 has a descending height flush with the top surface of the first cavity 111, and the descending height of the first lifting platform 1111 is lower than the second lifting platform 1112; a third lifting platform 1121 and a fourth lifting platform 1122 are stacked in the second cavity 112, the fourth lifting platform 1122 straddles the third lifting platform 1121, the third lifting platform 1121 has a lifting height flush with the top surface of the second cavity 112, the lifting height of the fourth lifting platform 1122 is greater than the lifting height of the third lifting platform 1121, the fourth lifting platform 1122 has a descending height flush with the top surface of the second cavity 112, the descending height of the third lifting platform 1121 is lower than the descending height of the fourth lifting platform 1122; the top surface of the first cavity 111 and the top surface of the second cavity 112 are in the same horizontal plane; the second lifting platform 1112 and the fourth platform 1122 are lifted and lowered synchronously.

[0065] Specifically, see Fig.13 The first lifting platform 1111 and the third lifting platform 1121 are provided with a first X-shaped scissor lifting assembly 1113 and a second X-shaped scissor lifting assembly 1114 at both ends thereof; a third cavity 113 is further provided at the ends of the first cavity 111 and the second cavity 112, and a Fig.13 The mobile trolley 10 shown; see Figures 1 to 12The second lifting platform 1112 and the fourth lifting platform 1122 adopt the vehicle lift described in Example 1. The second lifting platform 1112 and the fourth lifting platform 1122 serve as vehicle lifting components, while the first lifting platform 1111 and the third lifting platform 1121 serve as filling components of the first cavity 111 and the second cavity 112 to facilitate the walking of operators or heavy objects. Through this embodiment, the first lifting platform 1111 and the second lifting platform 1112 are stacked in the first cavity 111, and the third lifting platform 1121 and the fourth lifting platform 1122 are stacked in the second cavity 112. When the first lifting platform 1111, the second lifting platform 1112, the third lifting platform 1121 and the fourth lifting platform 1122 are all lowered to the lowest position, the second lifting platform 1112 is flush with the top surface of the first cavity 111, and the fourth lifting platform 1122 is flush with the top surface of the second cavity 112. When the first cavity 111 and the second cavity 112 are set in the ground, the second lifting platform 1112 and the fourth lifting platform 1122 can be flush with the ground, saving ground space and facilitating vehicles to travel in the first cavity 111. The second lifting platform 1112 and the fourth lifting platform 1122; when the first lifting platform 1111, the second lifting platform 1112, the third lifting platform 1121 and the fourth lifting platform 1122 are all raised to the highest position, the first lifting platform 1111 is flush with the top surface of the first cavity 111, and the third lifting platform 1121 is flush with the top surface of the second cavity 112. When the first cavity 111 and the second cavity 112 are arranged on the ground, the first lifting platform 1111 and the third lifting platform 1121 can be flush with the ground and just cover the first cavity 111 and the second cavity 112. The operator will not fall into the first cavity 111 and the second cavity 112 when shuttling under the second lifting platform 1112 and the fourth platform 1122.

[0066] The vehicle lift disclosed in this embodiment has the same technical solutions as those in the first embodiment. Please refer to the first embodiment and will not be described in detail here.

Claims

1. A vehicle lift, characterized in that: It comprises two lifting platforms which are synchronously lifted and arranged in parallel, a first lifting assembly and a second lifting assembly are respectively arranged at two ends of each lifting platform, and the first lifting assembly and the second lifting assembly are symmetrically arranged; The first lifting assembly includes a first articulated arm, a second articulated arm, a third articulated arm, a fourth articulated arm, a fifth articulated arm, a sixth articulated arm, a seventh articulated arm, and an eighth articulated arm; The first end of the first articulated arm is hinged to the ground, the first end of the second articulated arm is hinged to the ground, the first articulated arm is parallel to the second articulated arm, and a first support column is provided between the first articulated arm and the second articulated arm; The first end of the third articulated arm is hinged to the first end of the lifting platform, the first end of the fourth articulated arm is hinged to the first end of the lifting platform, the third articulated arm is parallel to the fourth articulated arm, and a second support column is arranged between the third articulated arm and the fourth articulated arm; The second end of the first articulated arm and the second end of the third articulated arm are articulated at a first articulated point, and the second end of the second articulated arm and the second end of the fourth articulated arm are articulated at a second articulated point; The first end of the fifth articulated arm is hinged to the first articulated arm to form a third articulated point, the first end of the sixth articulated arm is hinged to the second articulated arm to form a fourth articulated point, and the fifth articulated arm is parallel to the sixth articulated arm; The first end of the seventh articulated arm is slidably disposed on the lifting platform, the first end of the eighth articulated arm is slidably disposed on the lifting platform, and the seventh articulated arm is parallel to the eighth articulated arm; The second end of the seventh articulated arm and the second end of the fifth articulated arm are hinged at a fifth articulated point, and the second end of the eighth articulated arm and the second end of the sixth articulated arm are hinged at a sixth articulated point; The seventh articulated arm and the third articulated arm are articulated at a seventh articulated point, and the eighth articulated arm and the fourth articulated arm are articulated at an eighth articulated point; The first hydraulic cylinder assembly drives the second supporting column to rise and fall with the first supporting column as a fulcrum.

2. The vehicle lift according to claim 1, characterized in that: The center lines of the first articulated arm, the third articulated arm, the fifth articulated arm and the seventh articulated arm form a first parallelogram; The connecting lines of the first hinge point, the third hinge point, the fifth hinge point and the seventh hinge point form a second parallelogram.

3. The vehicle lift according to claim 1 or 2, characterized in that: The first hydraulic cylinder assembly includes a lifting cylinder, a first locking member and a second locking member, the first locking member is hinged to the first support column, and the second locking member is hinged to the second support column; The lifting cylinder comprises a cylinder barrel, a telescopic rod and a U-shaped frame, and the first locking member is mounted on the U-shaped frame; The first locking member includes a first locking tooth, and the second locking member is provided with a second locking tooth; The second locking member is provided with a locking cylinder, and the locking cylinder drives the second locking member to swing around the second supporting column with the U-shaped frame as a fulcrum and causes the second locking tooth to engage with or disengage from the first locking tooth.

4. The vehicle lift according to claim 3, characterized in that: A first locking member is respectively provided on both sides of the U-shaped frame; The second locking member includes a U-shaped portion and a first arm and a second arm disposed on the U-shaped portion, wherein the first arm and the second arm are both hinged to the second supporting column; The U-shaped portion straddles the U-shaped frame, and second locking teeth are respectively arranged on both sides of the U-shaped portion.

5. The vehicle lift according to claim 4, characterized in that: The U-shaped portion is provided with a hollow portion and an L-shaped bracket provided on the side of the hollow portion, a micro switch is installed on the L-shaped bracket, and the micro switch is aligned with the U-shaped bracket.

6. The vehicle lift according to claim 1 or 2, characterized in that: A first sliding block is arranged between the first end of the seventh articulated arm and the lifting platform, and a second sliding block is arranged between the first end of the eighth articulated arm and the lifting platform.

7. The vehicle lift according to claim 1 or 2, characterized in that: A movable track is arranged on the inner side of the lifting platform.

8. The vehicle lift according to claim 3, wherein: A pull rope sensor is arranged on the second supporting column, and a pull rope extending from the pull rope sensor is connected to the cylinder.

9. The vehicle lift according to claim 3, wherein: A wear reducing plate is arranged on the U-shaped frame.

10. A vehicle lift, characterized in that: It comprises a first cavity and a second cavity arranged in parallel; A first lifting platform and a second lifting platform are stacked in the first cavity, the second lifting platform is straddling the first lifting platform, the first lifting platform has a lifting height that is flush with the top surface of the first cavity, the lifting height of the second lifting platform is greater than the lifting height of the first lifting platform, the second lifting platform has a lowering height that is flush with the top surface of the first cavity, and the lowering height of the first lifting platform is lower than the lowering height of the second lifting platform; A third lifting platform and a fourth lifting platform are stacked in the second cavity, the fourth lifting platform is straddled on the third lifting platform, the third lifting platform has a lifting height flush with the top surface of the second cavity, the lifting height of the fourth lifting platform is greater than the lifting height of the third lifting platform, the fourth platform has a descending height flush with the top surface of the second cavity, and the descending height of the third lifting platform is lower than the descending height of the fourth platform; The top surface of the first cavity and the top surface of the second cavity are in the same horizontal plane; The second lifting platform and the fourth lifting platform are raised and lowered synchronously.

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