Scissor lift

Abstract

The purpose of the present invention is to disclose a scissor-type lift, which relates to the technical field of lifts, and comprises a first scissor-type lift assembly and a second scissor-type lift assembly; the first scissor-type lift assembly comprises a first lifting platform, and the second scissor-type lift assembly comprises a second lifting platform; the first platform comprises a first lifting part, a defective part and a second lifting part, a first L-shaped avoidance part and a second L-shaped avoidance part are respectively arranged on both sides of the first lifting part, and a third L-shaped avoidance part and a fourth L-shaped avoidance part are respectively arranged on both sides of the second lifting part; the second platform comprises a third lifting part and a first pull-out part and a second pull-out part arranged at both ends of the third lifting part; technical effect: the third lifting part of the present invention has a first pull-out part and a second pull-out part at both ends. If a vehicle with a large wheelbase is encountered, the first pull-out part and the second pull-out part can be directly pulled out when the second platform is in the lowest position, so that the third lifting part can easily expand its lifting range.

Description

Technical Field

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

[0002] At present, scissor lifts are indispensable lifting equipment for vehicle maintenance, four-wheel alignment detection, chassis clearance detection, etc. When the scissor lift lifts the vehicle to a certain height, if the tires need to leave the lifting platform, small scissors are needed to further lift the chassis of the vehicle. At present, the wheelbase range of vehicles that small scissors can adapt to is insufficient. How to expand the lifting range of small scissors is a technical problem that needs to be overcome.

[0003] In view of this, it is necessary to develop a scissor lift. Summary of the invention

[0004] To solve the above technical problems, the object of the present invention is to disclose a scissor lift.

[0005] To achieve the above-mentioned object of the invention, the present invention provides a scissor lift, comprising a first scissor lift assembly and a second scissor lift assembly with the first scissor lift assembly as a fulcrum;

[0006] The first scissor lift assembly includes a first lift platform, and the second scissor lift assembly includes a second lift platform;

[0007] The first lifting platform comprises a first lifting part, a defective part and a second lifting part, a first L-shaped avoidance part and a second L-shaped avoidance part are respectively arranged on both sides of the first lifting part, and a third L-shaped avoidance part and a fourth L-shaped avoidance part are respectively arranged on both sides of the second lifting part;

[0008] The second lifting platform includes a third lifting part and a first pulling part and a second pulling part arranged at two ends of the third lifting part;

[0009] The first drawer portion includes a first drawer, a second drawer, and a first support member disposed at the ends of the first drawer and the second drawer, the first drawer is drawn along the first L-shaped avoidance portion, and the second drawer is drawn along the second L-shaped avoidance portion;

[0010] The second drawer portion includes a third drawer, a fourth drawer, and a second support member disposed at the ends of the third drawer and the fourth drawer, the third drawer is drawn along the third L-shaped avoidance portion, and the fourth drawer is drawn along the fourth L-shaped avoidance portion;

[0011] The plane where the first support member is located is higher than the plane where the first lifting portion is located, and the plane where the second support member is located is higher than the plane where the second lifting portion is located.

[0012] Preferably, the first lifting portion is a rear wheel detection support assembly, and the second lifting portion is a front wheel detection support assembly.

[0013] Preferably, the first lifting part comprises a ball assembly and a support plate moving above the ball assembly;

[0014] The ball assembly comprises a first rectangular ball plate and a plurality of second rectangular ball plates arranged in an array, wherein the first rectangular ball plate is perpendicular to the second rectangular ball plate;

[0015] The plurality of second rectangular ball bearing plates are symmetrically arranged along the center line of the first lifting portion.

[0016] Preferably, a first approach bridge and a second approach bridge are respectively provided at both ends of the first lifting platform;

[0017] The second approach bridge comprises a first support plate and a second support plate, and the angle between the second lifting portion and the second support plate is 31°-112°;

[0018] The first support plate and the second support plate rotate around the same axis;

[0019] The first support plate is provided with a first limiting portion, and the second support plate is provided with a second limiting portion.

[0020] Preferably, when the angle between the second lifting portion and the second support plate is 112°, the vertical downward projection of the second support plate is directly projected onto the first support plate;

[0021] When the included angle between the second lifting portion and the second supporting plate is 31°, the vertical downward projection of the second supporting plate is directly projected onto the second lifting portion.

[0022] Preferably, the first scissor lift assembly further comprises a first lift cylinder and a first support arm and a second support arm driven by the first lift cylinder;

[0023] The first support arm is mounted on the bottom of the second lifting portion through a first L-shaped plate and a second L-shaped plate;

[0024] The first L-shaped plate comprises a first horizontal portion and a first vertical portion, a first fastening screw in a vertical state is arranged on the first horizontal portion, and a plurality of waist holes and second fastening screws in a horizontal state fastened to the waist holes are arranged on the first vertical portion;

[0025] The second L-shaped plate includes a second horizontal portion and a second vertical portion, a third fastening screw in a vertical state is arranged on the second horizontal portion, and a plurality of waist holes and a fourth fastening screw in a horizontal state fastened to the waist holes are arranged on the second vertical portion.

[0026] Preferably, four vertex corners of the third lifting portion are respectively provided with L-shaped defective portions;

[0027] A first protrusion is respectively provided at the end of the first drawer and the end of the second drawer, and the first protrusion is matched with the L-shaped defective portion;

[0028] Second protrusions are respectively arranged at the ends of the third drawer and the fourth drawer, and the second protrusions are matched with the L-shaped defective portion.

[0029] Preferably, the first protrusion, the second protrusion, the first lifting portion, the second lifting portion and the third lifting portion are in the same horizontal plane.

[0030] Preferably, a first support block and a second support block are respectively disposed at two ends of the first drawer, the first support block is located above the first drawer, and the second support block is located below the first drawer;

[0031] A third support block and a fourth support block are respectively disposed at two ends of the second drawer, the third support block is located above the second drawer, and the fourth support block is located below the second drawer.

[0032] Preferably, a first space is defined between the first lifting portion and the third lifting portion, and a second space is defined between the second lifting portion and the third lifting portion.

[0033] Compared with the prior art, the technical effects of the present invention are as follows:

[0034] When the scissor lift of the present invention performs four-wheel alignment detection or chassis clearance detection on a vehicle, the tire can be lifted to be separated from the first lifting platform by the second lifting platform. The third lifting part has a first pull-out part and a second pull-out part at both ends. If a vehicle with a large wheelbase is encountered, the first pull-out part and the second pull-out part can be directly pulled out when the second lifting platform is at the lowest position. The first L-shaped avoidance part and the second L-shaped avoidance part provide avoidance space for the first pull-out part, and the third L-shaped avoidance part and the fourth L-shaped avoidance part provide avoidance space for the second pull-out part. The third lifting part has the characteristics of being simple and convenient to expand its lifting range. There is no need to lift the third lifting part a short distance before pulling it out, and it can adapt to a chassis with a minimum height of 60 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the scissor lift of the present invention in a non-lifting state.

[0037] Figure 2 It is a three-dimensional structural schematic diagram of the scissor lift in the lifting state of the present invention.

[0038] Figure 3 It is a schematic diagram of the three-dimensional structure of the second lifting platform of the present invention.

[0039] Figure 4 It is a bottom view schematic diagram of the second lifting platform of the present invention.

[0040] Figure 5 The present invention Figure 4 Schematic diagram of the cross-sectional structure at AA.

[0041] Figure 6 The present invention Figure 5 A is an enlarged structural diagram of FIG.

[0042] Figure 7 It is a schematic diagram of the three-dimensional structure of the second lifting platform of the present invention.

[0043] Figure 8 It is a schematic diagram of the three-dimensional structure of the second approach bridge of the present invention.

[0044] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second approach bridge of the present invention.

[0045] Fig.10 It is a schematic diagram of the explosion structure of the second approach bridge of the present invention.

[0046] Fig.11 It is a three-dimensional structural schematic diagram of the scissor lift in the lifting state of the present invention.

[0047] Fig.12 The present invention Fig.11 Schematic diagram of the enlarged structure at B.

[0048] Fig.13 It is a schematic diagram of the three-dimensional structure of the ball assembly of the present invention.

[0049] Fig.14 It is a schematic diagram of the three-dimensional structure of an existing ball assembly.

[0050] Fig.15 It is a schematic cross-sectional structural diagram of a first lifting cylinder of the present invention.

[0051] Among them, 1, the first scissor-type lifting assembly; 11, the first lifting platform; 111, the first lifting part; 1111, the first L-shaped avoidance part; 1112, the second L-shaped avoidance part; 1113, the ball assembly; 1114, the support plate; 1115, the first rectangular ball plate; 1116, the second rectangular ball plate; 112, the defective part; 113, the second lifting part; 1131, the third L-shaped avoidance part; 1132, the Four L-shaped avoidance parts; 114, first space; 115, second space; 116, first approach bridge; 117, second approach bridge; 1171, first support plate; 1172, second support plate; 1173, shaft; 1174, first limiter; 1175, second limiter; 12, first lifting cylinder; 121, fulcrum; 13, first support arm; 131, first L-shaped plate; 1311, first horizontal part; 1 312, first vertical part; 1313, first fastening screw; 1314, waist hole; 1315, second fastening screw; 132, second L-shaped plate; 1321, second horizontal part; 1322, second vertical part; 1323, third fastening screw; 1324, waist hole; 1325, fourth fastening screw; 14, second support arm; 2, second scissor lift assembly; 21, second lift platform; 211, third Lifting portion; 2111, L-shaped defective portion; 212, first drawer portion; 2121, first drawer member; 2122, second drawer member; 2123, first support member; 2124, first protrusion; 2125, first support block; 2126, second support block; 213, second drawer portion; 2131, third drawer member; 2132, fourth drawer member; 2133, second support member; 2134, second protrusion. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] Embodiment 1

[0055] Ginseng Figures 1 to 13 , this embodiment discloses a specific implementation of a scissor lift.

[0056] Scissor lift, Figures 1 to 13 , including a first scissor-type lifting assembly 1 and a second scissor-type lifting assembly 2 with the first scissor-type lifting assembly 1 as a fulcrum; the first scissor-type lifting assembly 1 includes a first lifting platform 11, and the second scissor-type lifting assembly 2 includes a second lifting platform 21; the first lifting platform 11 includes a first lifting portion 111, a defective portion 112 and a second lifting portion 113, the first lifting portion 111 is provided with a first L-shaped avoidance portion 1111 and a second L-shaped avoidance portion 1112 on both sides, and the second lifting portion 113 is provided with a third L-shaped avoidance portion 1131 and a fourth L-shaped avoidance portion 1132 on both sides; the second lifting platform 21 includes a third lifting portion 211 and a first drawing portion 212 and a second drawing portion 213 provided at both ends of the third lifting portion 211; the first drawing portion 212 includes a first drawing member 2121, a second drawing member 212 2 and a first supporting member 2123 arranged at the ends of the first drawer 2121 and the second drawer 2122, the first drawer 2121 is drawn along the first L-shaped avoidance portion 1111, and the second drawer 2122 is drawn along the second L-shaped avoidance portion 1112; the second drawer portion 213 includes a third drawer 2131, a fourth drawer 2132 and a second supporting member 2133 arranged at the ends of the third drawer 2131 and the fourth drawer 2132, the third drawer 2131 is drawn along the third L-shaped avoidance portion 1131, and the fourth drawer 2132 is drawn along the fourth L-shaped avoidance portion 1132; the plane where the first supporting member 2123 is located is higher than the plane where the first lifting portion 111 is located, and the plane where the second supporting member 2133 is located is higher than the plane where the second lifting portion 113 is located.

[0057] Specifically, see Figures 1 to 13 The first scissor-type lifting assembly 1 is a large scissor, the second scissor-type lifting assembly 2 is a small scissor, and the second scissor-type lifting assembly 2 can be retracted to the defective portion 112; see Figure 1, the front of the vehicle drives in along the direction of the arrow, the first lifting part 111 is the rear wheel detection support assembly, and the second lifting part 113 is the front wheel detection support assembly; when the four-wheel alignment detection is completed, when the second scissor-type lifting assembly 2 is needed to lift the vehicle and separate its tires from the first scissor-type lifting assembly, the first pulling part 212 and / or the second pulling part 213 are manually pulled to adjust the lifting range of the third lifting part 211, so as to adapt to vehicles with longer wheelbases; due to the first L-shaped avoidance part 1111, the second L-shaped avoidance part 1112, and the third L-shaped The avoidance portion 1131 and the fourth L-shaped avoidance portion 1132 provide avoidance space for the first pull-out member 2121, the second pull-out member 2122, the third pull-out member 2131 and the fourth pull-out member 2132 respectively. The first pull-out portion 212 and / or the second pull-out portion 213 can be directly pulled out when they are at the lowest point, and can adapt to a chassis with a minimum height of 60 mm; when the first pull-out portion 212 and the second pull-out portion 213 are both in the maximum pulled-out position, the lifting range of the second lifting platform 21 is extended to 2100 mm, greatly increasing the lifting range of the second lifting platform 21.

[0058] See also Figures 3 to 7The working principle of the third lifting part 211 is as follows: the four vertices of the third lifting part 211 are respectively provided with L-shaped defective parts 2111; the first drawer 2121, the second drawer 2122, the third drawer 2131 and the fourth drawer 2132 are all long strip reinforcement members with rectangular cross-sections, and slideways for the first drawer 2121, the second drawer 2122, the third drawer 2131 and the fourth drawer 2132 to move are provided on both sides of the third lifting part 211; in order to facilitate the first drawer 2121, the second drawer 2122, the third drawer 21 The first and fourth drawer members 2131 and 2132 slide and effectively support the vehicle chassis. The first protrusions 2124 are respectively provided at the ends of the first drawer member 2121 and the second drawer member 2122. The first protrusions 2124 and the L-shaped defective portion 2111 are arranged in cooperation. That is, when the first drawer member 2121 and the second drawer member 2122 retract, the first protrusions 2124 enter the L-shaped defective portion 2111. Similarly, the second protrusions 2134 are respectively provided at the ends of the third drawer member 2131 and the fourth drawer member 2132. The second protrusions 2134 The L-shaped defective portion 2111 is arranged in cooperation with the third pull-out member 2131 and the fourth pull-out member 2132, that is, when the third pull-out member 2131 and the fourth pull-out member 2132 are retracted, the second protrusion 2134 enters the L-shaped defective portion 2111; when the second scissor-type lifting assembly 2 is in a non-lifting state, the first protrusion 2124, the second protrusion 2134, the first lifting portion 111, the second lifting portion 113 and the third lifting portion 211 are in the same horizontal plane, and the first support member 2123 and the second support member 2133 are both higher than the horizontal plane, and the operator needs to pull the first pull-out portion 212 and / or the second pull-out portion 2132. When the first lifting part 111 and the third lifting part 211 are in the lifting state, the first support member 2123 and the second support member 2133 play the role of handles; when the second scissor-type lifting assembly 2 is in the lifting state, the first support member 2123 and the second support member 2133 play the role of supporting the chassis; a first space 114 is defined between the first lifting part 111 and the third lifting part 211, and the first space 114 is the activity space of the first pull-out part 212; a second space 115 is defined between the second lifting part 113 and the third lifting part 211, and the second space 115 is the activity space of the second pull-out part 213.In order to keep the first drawer 2121, the second drawer 2122, the third drawer 2131 and the fourth drawer 2132 in a stable state during the drawing process and the vehicle lifting process, a first support block 2125 and a second support block 2126 are respectively provided at both ends of the first drawer 2121, the first support block 2125 is located above the first drawer 2121, and the first support block 2125 always contacts the bottom of the third lifting part 211 during the drawing process, and the second support block 2126 is provided at both ends of the first drawer 2121. The second support block 2126 is located below the first drawer 2121, and the second support block 2126 always contacts the bottom of the first L-shaped avoidance portion 1111 during the drawing process; the second drawer 2122 is provided with a third support block 2125 and a fourth support block 2126 at both ends, the third support block 2125 is located above the second drawer 2122, and the third support block 2125 always contacts the bottom of the third lifting portion 211 during the drawing process, and the fourth support block 2126 is located above the second drawer 2122. Below the second pull-out member 2122, the fourth support block 2126 always contacts the bottom of the second L-shaped avoidance portion 1112 during the pulling process; a fifth support block and a sixth support block (not shown due to obstruction) are respectively arranged at both ends of the third pull-out member 2131, the fifth support block is located above the third pull-out member 2131, and the fifth support block always contacts the bottom of the third lifting portion 211 during the pulling process, the sixth support block is located below the third pull-out member 2131, and the sixth support block always contacts the bottom of the third L-shaped avoidance portion 1131 during the pulling process; a seventh support block and an eighth support block (not shown due to obstruction) are respectively arranged at both ends of the fourth pull-out member 2132, the seventh support block is located above the fourth pull-out member 2132, and the seventh support block always contacts the bottom of the third lifting portion 211 during the pulling process, the eighth support block is located below the fourth pull-out member 2132, and the eighth support block always contacts the bottom of the fourth L-shaped avoidance portion 1132 during the pulling process.

[0059] See also Figures 8 to 10In order to facilitate the vehicle to go up and down the first lifting platform 11, a first approach bridge 116 and a second approach bridge 117 are respectively arranged at both ends of the first lifting platform 11; the second approach bridge 117 includes a first support plate 1171 and a second support plate 1172, and the angle between the second lifting part 113 and the second support plate 1172 is 31°-112°; the first support plate 1171 and the second support plate 1172 rotate around the same axis 1173; the first support plate 1171 is provided with a first limiting portion 1174, the first limiting portion 1174 abuts against the first lifting platform 11 and makes the first support plate 1171 present a certain slope, and the second support plate 1172 is provided with a second limiting portion 1175, and the second limiting portion 1175 can swing between the first lifting platform 11 and the first support plate 1171; When the angle a between the second lifting portion 113 and the second support plate 1172 is 112°, the vertical downward projection of the second support plate 1172 is directly projected onto the first support plate 1171, that is, the second support plate 1172 is away from the second lifting portion 113, allowing the front wheels of the vehicle to travel to the edge of the second lifting portion 113 to prevent the second support plate 1172 from interfering with the front wheels, thereby increasing the effective length of the first lifting platform 11, so that vehicles with longer wheelbases can be lifted; when the angle b between the second lifting portion 113 and the second support plate 1172 is 31°, the vertical downward projection of the second support plate 1172 is directly projected onto the second lifting portion 113. In this case, the range of movement of the front wheels of the vehicle will be affected by the second support plate 1172 to adapt to short wheelbase vehicles.

[0060] See also Fig.13 The first lifting part 111 includes a ball assembly 1113 and a support plate 1114 moving above the ball assembly 1113; the ball assembly 1113 and the support plate 1114 constitute a rear wheel detection support assembly. Fig.14 , Fig.14The present invention is an existing rear wheel detection support assembly, wherein the ball assembly 1113 is composed of a plurality of discs, the balls form a circle, and the support plate 1114 performs four-wheel alignment detection with the cooperation of the plurality of balls. The defects of the existing rear wheel detection support assembly are: first, the distance between adjacent disc-shaped ball assemblies 1113 is relatively far, and the support plate 1114 between adjacent disc-shaped ball assemblies 1113 is easily deformed by the rear wheel; second, when the vehicle is not parked in the center, the center of gravity of the rear wheel will be pressed on the edge of the disc-shaped ball assembly 1113, and the balls at the edge are unevenly distributed, so that the support plate 1114 is easily deformed by the pressure, resulting in inaccurate four-wheel alignment detection or the need to replace the support plate 1114; in view of this, the ball assembly 1113 of the present embodiment includes a first rectangular ball disc 1115 and a plurality of second rectangular ball discs 1116 arranged in an array, wherein the first rectangular ball discs 1115 and the second rectangular ball discs 1116 are ... The plate 1115 is perpendicular to the second rectangular ball plate 1116; a plurality of the second rectangular ball plates 1116 are symmetrically arranged along the center line L of the first lifting portion 111; in the present embodiment, a plurality of balls are arranged along the first rectangular ball plate 1115, and the first rectangular ball plate 1115 covers the space between the first L-shaped avoidance portion 1111 and the second L-shaped avoidance portion 1112, and a plurality of balls are also arranged in the middle of the first rectangular ball plate 1115, so that the rear wheel can be fully supported at any position above the first rectangular ball plate 1115, and the support plate 1114 will not be deformed by compression; a plurality of the second rectangular ball plates 1116 are symmetrically distributed on both sides of the center line L, so that the rear wheel can be fully supported whether it is centered or biased to the left or right, and the support plate 1114 will not be deformed by compression, thereby ensuring the service life of the rear wheel detection support assembly.

[0061] See also Fig.11 and Fig.12The first lifting platform 11 has a high requirement for horizontality. In the process of manufacturing the first scissor-type lifting component 1, there are inevitably processing errors and installation errors. For this reason, the following technical scheme is adopted: the first scissor-type lifting component 1 also includes a first lifting cylinder 12 and a first support arm 13 and a second support arm 14 driven by the first lifting cylinder 12, and the first support arm 13 and the second support arm 14 are crossed in an X shape; the first support arm 13 is installed on the bottom of the second lifting part 113 through a first L-shaped plate 131 and a second L-shaped plate 132; the first L-shaped plate 131 includes a first horizontal part 1311 and a first vertical part 1312, a first fastening screw 1313 in a vertical state is arranged on the first horizontal part 1311, and a plurality of waist holes 1314 and a second fastening screw 1315 in a horizontal state fastened to the waist holes 1314 are arranged on the first vertical part 1312; the second L-shaped plate 132 includes a second horizontal part 1321 and a second vertical portion 1322, a third fastening screw 1323 in a vertical state is arranged on the second horizontal portion 1321, and a plurality of waist holes 1324 and a fourth fastening screw 1325 in a horizontal state fastened to the waist holes 1324 are arranged on the second vertical portion 1322; when the horizontal portion of the first lifting platform 11 is insufficient, the second fastening screw 1315 and the fourth fastening screw 1325 are loosened, and the first fastening screw 1313 and / or the third fastening screw are screwed 1323, so that the height position of the first L-shaped plate 131 and / or the second L-shaped plate 132 is changed, so as to level the first lifting platform 11. After leveling, the second fastening screw 1315 and the fourth fastening screw 1325 are tightened to realize the rapid leveling of the first lifting platform 11. In this embodiment, when the first lifting platform 11 is not lifted, the height of the first lifting platform 11 from the ground is only 360 mm. In order to make the initial lifting force of the first lifting cylinder 12 as small as possible, see Fig.15 The first lifting cylinder 12 adopts an eccentric cylinder, that is, the fulcrum 121 below the first lifting cylinder 12 is located below the axis of the first lifting cylinder 12. Compared with the non-eccentric cylinder, the eccentric setting of this embodiment increases the initial angle of the first lifting cylinder 12.

Claims

1. Scissor lift, characterized in that: It includes a first scissor lift assembly and a second scissor lift assembly with the first scissor lift assembly as a fulcrum; The first scissor lift assembly includes a first lift platform, and the second scissor lift assembly includes a second lift platform; The first lifting platform comprises a first lifting part, a defective part and a second lifting part, a first L-shaped avoidance part and a second L-shaped avoidance part are respectively arranged on both sides of the first lifting part, and a third L-shaped avoidance part and a fourth L-shaped avoidance part are respectively arranged on both sides of the second lifting part; The second lifting platform includes a third lifting part and a first pulling part and a second pulling part arranged at two ends of the third lifting part; The first drawer portion includes a first drawer, a second drawer, and a first support member disposed at the ends of the first drawer and the second drawer, the first drawer is drawn along the first L-shaped avoidance portion, and the second drawer is drawn along the second L-shaped avoidance portion; The second drawer portion includes a third drawer, a fourth drawer, and a second support member disposed at the ends of the third drawer and the fourth drawer, the third drawer is drawn along the third L-shaped avoidance portion, and the fourth drawer is drawn along the fourth L-shaped avoidance portion; The plane where the first support member is located is higher than the plane where the first lifting portion is located, and the plane where the second support member is located is higher than the plane where the second lifting portion is located.

2. The scissor lift according to claim 1, characterized in that The first lifting part is a rear wheel detection support assembly, and the second lifting part is a front wheel detection support assembly.

3. The scissor lift according to claim 1, characterized in that The first lifting part includes a ball assembly and a support plate moving above the ball assembly; The ball assembly comprises a first rectangular ball plate and a plurality of second rectangular ball plates arranged in an array, wherein the first rectangular ball plate is perpendicular to the second rectangular ball plate; The plurality of second rectangular ball bearing plates are symmetrically arranged along the center line of the first lifting portion.

4. The scissor lift according to claim 1, characterized in that: A first approach bridge and a second approach bridge are respectively arranged at both ends of the first lifting platform; The second approach bridge comprises a first support plate and a second support plate, and the angle between the second lifting portion and the second support plate is 31°-112°; The first support plate and the second support plate rotate around the same axis; The first support plate is provided with a first limiting portion, and the second support plate is provided with a second limiting portion.

5. The scissor lift according to claim 1, characterized in that: When the included angle between the second lifting portion and the second support plate is 112°, the vertical downward projection of the second support plate is directly projected onto the first support plate; When the included angle between the second lifting portion and the second supporting plate is 31°, the vertical downward projection of the second supporting plate is directly projected onto the second lifting portion.

6. The scissor lift according to claim 1, characterized in that: The first scissor lift assembly further includes a first lift cylinder and a first support arm and a second support arm driven by the first lift cylinder; The first support arm is mounted on the bottom of the second lifting portion through a first L-shaped plate and a second L-shaped plate; The first L-shaped plate comprises a first horizontal portion and a first vertical portion, a first fastening screw in a vertical state is arranged on the first horizontal portion, and a plurality of waist holes and second fastening screws in a horizontal state fastened to the waist holes are arranged on the first vertical portion; The second L-shaped plate includes a second horizontal portion and a second vertical portion, a third fastening screw in a vertical state is arranged on the second horizontal portion, and a plurality of waist holes and a fourth fastening screw in a horizontal state fastened to the waist holes are arranged on the second vertical portion.

7. The scissor lift according to any one of claims 1 to 6, characterized in that: The four vertex corners of the third lifting part are respectively provided with L-shaped defective parts; A first protrusion is respectively provided at the end of the first drawer and the end of the second drawer, and the first protrusion is matched with the L-shaped defective portion; Second protrusions are respectively arranged at the ends of the third drawer and the fourth drawer, and the second protrusions are matched with the L-shaped defective portion.

8. The scissor lift according to claim 7, characterized in that The first protrusion, the second protrusion, the first lifting portion, the second lifting portion and the third lifting portion are in the same horizontal plane.

9. The scissor lift according to claim 7, characterized in that: A first support block and a second support block are respectively disposed at two ends of the first drawer, the first support block is located above the first drawer, and the second support block is located below the first drawer; A third support block and a fourth support block are respectively disposed at two ends of the second drawer, the third support block is located above the second drawer, and the fourth support block is located below the second drawer.

10. The scissor lift according to claim 7, characterized in that A first space is defined between the first lifting portion and the third lifting portion, and a second space is defined between the second lifting portion and the third lifting portion.

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