Scissor fork type elevator and security inspection equipment

Abstract

The utility model discloses a scissor-fork type elevator which comprises a base. The bearing part and the base are arranged in a spaced mode in the first direction, and the bearing part is used for bearing and transporting trays; a first driving member; the ball screw comprises a lead screw and a nut block, the nut block is arranged on the lead screw in a sleeving mode, and the lead screw is connected with the first driving piece. The connecting part extends in the second direction and is connected with the nut block; one end of the first connecting frame is rotationally connected with the connecting part, and the other end is rotationally connected with the bearing part; one end of the second connecting frame is rotationally connected with the base, the other end of the second connecting frame is slidably connected with the bearing part, and the second connecting frame and the first connecting frame intersect and are rotationally connected; the first driving piece is used for driving the lead screw to rotate to drive the nut block and the connecting part to move relative to the base in the third direction so as to drive the bearing part to get close to or away from the base in the first direction. The positioning precision and the transmission efficiency can be improved, and meanwhile, the device adapts to high-speed working conditions and does not occupy external space. The utility model also provides security inspection equipment.

Description

Technical Field

[0001] The utility model relates to the field of security inspection equipment, in particular to a scissor-type lift and security inspection equipment. Background Art

[0002] Most of the current scissor-type lifts are driven by worm gears, but the worm gears have low positioning accuracy and low transmission efficiency. When the speed of the worm gear is too high, the tooth surface will be severely worn and heated, resulting in low efficiency. In other words, the higher the speed of the worm gear, the lower the efficiency. Therefore, the worm gear is only suitable for low-speed conditions. At the same time, when a worm gear scissor-type lift is descending, the worm will protrude backwards and occupy more external space. Utility Model Content

[0003] The purpose of the utility model is to solve the problems of low positioning accuracy, low transmission efficiency, large external space occupation and only suitable for low-speed working conditions of the current worm gear scissor lift. The utility model provides a scissor lift and security inspection equipment, which can improve positioning accuracy and transmission efficiency, adapt to high-speed working conditions and do not occupy external space.

[0004] In order to solve the above technical problems, the embodiment of the utility model discloses a scissor lift, comprising:

[0005] Base;

[0006] A bearing portion, the bearing portion and the base are spaced apart along a first direction, and the bearing portion is used to bear and transport the pallet;

[0007] a first driving member;

[0008] A ball screw, the ball screw comprising a screw and a nut block, the nut block is sleeved on the screw, and the screw is connected to the first driving member;

[0009] a connecting portion extending along a second direction and connected to the nut block, wherein the first direction intersects with the second direction;

[0010] a first connecting frame, one end of which is rotatably connected to the connecting portion, and the other end of which is rotatably connected to the bearing portion;

[0011] a second connecting frame, one end of which is rotatably connected to the base, and the other end of which is slidably connected to the bearing portion, and the second connecting frame intersects with the first connecting frame and is rotatably connected;

[0012] The first driving member is used to drive the lead screw to rotate, so as to drive the nut block and the connecting portion to move relative to the base along a third direction, thereby driving the bearing portion to approach or move away from the base along the first direction, and the third direction intersects with the second direction.

[0013] By adopting the above technical scheme, the first driving member is connected to the lead screw and is used to drive the lead screw to rotate, so as to drive the nut block and the connecting part connected to the nut block to move along the third direction. At this time, one end of the first connecting frame connected to the connecting part also undergoes synchronous movement. At the same time, the other end of the second connecting frame rotatably connected to the first connecting frame is slidably connected to the load-bearing part. Driven by one end of the first connecting frame, the other end of the second connecting frame undergoes the same movement as one end of the first connecting frame, so that the distance between the first connecting frame and the second connecting frame increases or decreases accordingly, so that the load-bearing part connected to the first connecting frame and the second connecting frame approaches or moves away from the base along the first direction, that is, changes the height of the load-bearing part. In general, the circular motion of the ball screw is converted into the linear motion of the load-bearing part, so that the height of the load-bearing part changes, so as to achieve the rise (i.e., away from the base) and fall (i.e., close to the base) of the load-bearing part.

[0014] Specifically, when the first driving member drives the lead screw to rotate, it drives the nut block to move in a direction away from one end of the second connecting frame, so that the connecting part moves in a direction away from one end of the second connecting frame, thereby driving one end of the first connecting frame connected to the connecting part to move synchronously, that is, to move in a direction away from one end of the second connecting frame, so that the distance between one end of the first connecting frame and one end of the second connecting frame increases. At the same time, the other end of the second connecting frame rotatably connected to the first connecting frame is slidably connected to the load-bearing part. Driven by one end of the first connecting frame, the other end of the second connecting frame undergoes the same movement as one end of the first connecting frame, so that the other end of the second connecting frame moves away from the other end of the first connecting frame, so that the distance between the other end of the second connecting frame and the other end of the first connecting frame increases, thereby driving the load-bearing part to move along the first direction toward the direction close to the base, causing it to descend.

[0015] Similarly, when the first driving member drives the lead screw to rotate, it drives the nut block to move in a direction close to one end of the second connecting frame, so that the connecting part moves in a direction close to one end of the second connecting frame, thereby driving one end of the first connecting frame connected to the connecting part to move synchronously, that is, to move in a direction close to one end of the second connecting frame, so that the distance between one end of the first connecting frame and one end of the second connecting frame is reduced. At the same time, the other end of the second connecting frame rotatably connected to the first connecting frame is slidably connected to the load-bearing part. Driven by one end of the first connecting frame, the other end of the second connecting frame undergoes the same movement as one end of the first connecting frame, so that the other end of the second connecting frame moves close to the other end of the first connecting frame, so that the distance between the other end of the second connecting frame and the other end of the first connecting frame is reduced, thereby driving the load-bearing part to move along the first direction in a direction away from the base, causing it to rise.

[0016] Compared with using worm gears to achieve changes in the height of the load-bearing part, using ball screws has at least the following advantages:

[0017] 1. The positioning accuracy is high, which can reach a precision of plus or minus 0.1 mm, which is a precision that worm gears cannot achieve.

[0018] 2. Suitable for high-speed working conditions, worm gears are more suitable for low-speed working conditions, because when the worm gear speed is high, it will cause serious wear on the tooth surface and serious heat, resulting in low efficiency. In other words, the higher the speed of the worm gear, the lower the efficiency. Therefore, worm gears are only suitable for low-speed working conditions.

[0019] 3. The transmission efficiency is high. The transmission efficiency of the ball screw is 98%, and the transmission efficiency of the worm gear is about 70%.

[0020] 4. Save space. When the worm gear scissor lift is lowered, the worm will protrude backwards, occupying more external space. However, the scissor lift of the present application only requires the nut block to move along the extended length of the lead screw when ascending and descending, and will not occupy external space.

[0021] At the same time, the space occupied by the ball screw is much smaller than that of the electric cylinder. The larger the required load, the larger the size of the electric cylinder will be, resulting in space encroachment, while the space occupied by the ball screw is only the extended length of the screw; the ball screw is safer than the cylinder because the gas can be compressed. If the gas in the cylinder suddenly fails, the scissors-type lift may suddenly drop and cause a safety accident, while the ball screw will only move when driven by the first drive member, thereby driving the load-bearing part to move, causing it to rise and fall. When the first drive member stops moving, the ball screw will also stop moving, and will not cause sudden movement of the scissors-type lift.

[0022] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, wherein the first connecting frame is provided with a first limit block, the first limit block is located below the connection point of the first connecting frame and the second connecting frame, and the first limit block is used to abut against the second connecting frame to limit the final distance of the bearing part moving along the first direction close to the base.

[0023] By adopting the above technical solution, a first limit block is set, and the first limit block is located below the connection point between the first connecting frame and the second connecting frame. In this way, when the load-bearing part moves downward along the first direction, the first limit block will resist the second connecting frame to limit the final distance of the downward movement of the load-bearing part, thereby preventing the scissors-type lift from descending too low and causing damage to the scissors-type lift.

[0024] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, which also includes two guide parts. Along the second direction, the two guide parts are arranged on both sides of the screw, and each of the guide parts extends along the third direction and is connected to the connecting part so that the connecting part moves along the third direction relative to the base.

[0025] By adopting the above technical solution, two guide parts are arranged on both sides of the screw, and each guide part is connected to the connecting part. In this way, when the first driving member drives the screw to rotate, thereby driving the connecting part to move along the third direction relative to the base, the guide part can guide and limit its movement, thereby reducing the possibility of the connecting part tipping over during the movement.

[0026] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, each of the guide parts includes a slide rail and a slider, the slide rail extends along the third direction, the slider is connected to the slide rail in a slidable manner along the third direction, and the slider is connected to the connecting part.

[0027] By adopting the above technical solution, the slider is connected to the connecting part and is also connected to the slide rail in a slidable manner along the third direction. When the connecting part is driven to move along the third direction, the slider can move along the slide rail. In this way, the movement of the connecting part can be limited by the slide rail, so that it can move linearly along the extension direction of the slide rail, thereby reducing the possibility of the connecting part tipping over during the movement.

[0028] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissor-type lift, wherein the first connecting frame includes a first sub-connecting frame and a second sub-connecting frame, the first sub-connecting frame and the second sub-connecting frame are spaced apart along the second direction, and a first reinforcing frame is connected between the first sub-connecting frame and the second sub-connecting frame; the second connecting frame includes a third sub-connecting frame and a fourth sub-connecting frame, the third sub-connecting frame and the fourth sub-connecting frame are spaced apart along the second direction, and a second reinforcing frame is connected between the third sub-connecting frame and the fourth sub-connecting frame, the first sub-connecting frame intersects with the third sub-connecting frame and is rotatably connected via a first rotating shaft, and the second sub-connecting frame intersects with the fourth sub-connecting frame and is rotatably connected via a second rotating shaft.

[0029] By adopting the above technical solution, a first reinforcing frame is connected between the first sub-connecting frame and the second sub-connecting frame to keep the movement of the first sub-connecting frame and the second sub-connecting frame synchronous, and at the same time, the stiffness and strength of the first sub-connecting frame and the second sub-connecting frame are strengthened, so that the first sub-connecting frame and the second sub-connecting frame are more stable during movement; a second reinforcing frame is connected between the third sub-connecting frame and the fourth sub-connecting frame to keep the movement of the third sub-connecting frame and the fourth sub-connecting frame synchronous, and at the same time, the stiffness and strength of the third sub-connecting frame and the fourth sub-connecting frame are strengthened, so that the third sub-connecting frame and the fourth sub-connecting frame are more stable during movement.

[0030] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, the connecting part includes a connecting plate, a bearing seat is provided on the side of the connecting plate facing away from the slider, the bearing seat and the slider are located on opposite sides of the connecting plate, the bearing seat includes a first bearing seat and a second bearing seat, the first bearing seat is rotatably connected to one end of the first sub-connecting frame via a third rotating shaft, and the second bearing seat is rotatably connected to one end of the second sub-connecting frame via a fourth rotating shaft.

[0031] By adopting the above technical solution, the bearing seat and the slider are arranged on opposite sides of the connecting plate, so that the limiting effect of the slider rail on the connecting plate can be directly transmitted to the first sub-connecting frame and the second sub-connecting frame rotatably connected to the bearing seat, making the first sub-connecting frame and the second sub-connecting frame more stable during movement.

[0032] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissor-type lift, the load-bearing part includes a base plate, the base plate includes a first base plate and a second base plate, the first base plate and the second base plate are spaced apart along the second direction, the first base plate is provided with a first slide groove on a side facing the first sub-connecting frame and the third sub-connecting frame, and the second base plate is provided with a second slide groove on a side facing the second sub-connecting frame and the fourth sub-connecting frame, the first slide groove and the second slide groove both extend along the third direction, the other end of the first sub-connecting frame is rotatably connected to the first base plate through a fifth rotating shaft, the other end of the second sub-connecting frame is rotatably connected to the second base plate through a sixth rotating shaft, the other end of the third sub-connecting frame is connected to the first slide groove in a slidable manner along the third direction, and the other end of the fourth sub-connecting frame is connected to the second slide groove in a slidable manner along the third direction.

[0033] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, wherein a first roller is provided at the other end of the third sub-connecting frame, and the first roller is connected to the first slide groove in a slidable manner along the third direction, and a second roller is provided at the other end of the fourth sub-connecting frame, and the second roller is connected to the second slide groove in a slidable manner along the third direction.

[0034] The above technical scheme is adopted to realize the sliding connection between the other end of the third sub-connecting frame and the first sliding groove through the first roller, so that when the connecting plate drives one end of the first sub-connecting frame to move along the third direction, the other end of the third sub-connecting frame can be synchronously moved along the first sliding groove through the first roller, so that the movement of one end of the first sub-connecting frame and the other end of the third sub-connecting frame are kept synchronized, thereby making the movement of the first base plate connected thereto more stable; similarly, the sliding connection between the other end of the fourth sub-connecting frame and the second sliding groove is realized through the second roller, so that when the connecting plate drives one end of the second sub-connecting frame to move along the third direction, the other end of the fourth sub-connecting frame can be synchronously moved along the second sliding groove through the second roller, so that the movement of one end of the second sub-connecting frame and the other end of the fourth sub-connecting frame are kept synchronized, thereby making the movement of the second base plate connected thereto more stable, and the structure is simple.

[0035] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, wherein the inner wall of the first slide groove and the inner wall of the second slide groove are both provided with a second limit block, and the second limit block is used to abut against the first roller and the second roller to limit the final distance of the bearing part moving away from the base along the first direction.

[0036] By adopting the above technical solution, by setting a second limit block, the final distance of the movement of the first roller and the second roller along the third direction is limited, that is, the final distance of the third sub-connecting frame moving toward the first sub-connecting frame and the final distance of the fourth sub-connecting frame moving toward the second sub-connecting frame are limited. In other words, the maximum distance the first base plate and the second base plate rise along the first direction is limited.

[0037] That is to say, when the bearing part moves upward along the first direction, the second limit block will abut against the first roller and the second roller to limit the final distance of its upward movement, thereby preventing the third sub-connecting frame from colliding with the first sub-connecting frame after being too close to each other, and preventing the fourth sub-connecting frame from colliding with the second sub-connecting frame after being too close to each other.

[0038] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, which also includes a placing plate, which is arranged on the base, and a receiving hole is opened at the center of the placing plate. Along the second direction, the guide parts are connected to both sides of the placing plate, and the nut block is located in the receiving hole.

[0039] By adopting the above technical solution, the nut block of the ball screw is located in the accommodating hole so that when the ball screw rotates, the nut block has space to move along the third direction, so that the ball screw can drive the connecting plate to move along the third direction relative to the base.

[0040] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, wherein a third bearing seat and a fourth bearing seat are respectively provided on both sides of the placement plate along the third direction, one end of the lead screw is connected to the third bearing, and the other end passes through the fourth bearing seat and is connected to the first driving member, and a plurality of handles are also spaced apart on both sides of the placement plate, and the plurality of handles are provided between the two guide portions.

[0041] By adopting the above technical solution, the third bearing seat and the fourth bearing seat are placed on the placement plate instead of directly on the base, which can make the ball screw more stable, meet the flatness requirements of the ball screw, and reduce noise; at the same time, multiple handles are provided, which can facilitate the staff to lift the placement plate when repairing the scissors-type lift.

[0042] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, wherein the base is provided with a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are spaced apart along the second direction, a fifth bearing seat is provided on the first connecting seat, one end of the third sub-connecting frame is rotatably connected to the fifth bearing seat via a seventh rotating shaft, a sixth bearing seat is provided on the second connecting seat, and one end of the fourth sub-connecting frame is rotatably connected to the sixth bearing seat via an eighth rotating shaft.

[0043] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a scissors-type lift, which also includes a reducer, and the reducer is respectively connected to the first driving member and the lead screw.

[0044] By adopting the above technical solution, the speed reducer can reduce the rotation speed and increase the output torque, thereby extending the life of the first driving member.

[0045] An embodiment of the utility model further discloses a security inspection device, comprising a frame and a scissor-type lift as described in any one of the above embodiments, wherein the frame is provided with a first accommodating space for accommodating the scissor-type lift so that the scissor-type lift can rise or fall in the first accommodating space.

[0046] An embodiment of the utility model also discloses a security inspection device, wherein the scissor-type lift rises or descends to switch the carrying part between a first position and a second position, wherein in the first position, the carrying part is used to transport the pallet along the third direction to the inspection area, and in the second position, the carrying part is used to transport the pallet to the re-inspection area.

[0047] By adopting the above technical solution, when the scissor lift rises so that the load-bearing part of the scissor lift is in the first position, the load-bearing part runs from left to right along the third direction, and the pallet on the load-bearing part is transported from left to right to the inspection area; when the staff completes the inspection of the luggage in the pallet, the scissor lift descends so that the load-bearing part is in the second position, and the load-bearing part runs from right to left along the third direction, and the pallet that has completed the inspection is transported from right to left to the re-inspection area; there is no need to add new re-inspection equipment, and both the transportation inspection and re-inspection processes can be completed at the same time, saving costs and reducing floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A three-dimensional diagram showing the security inspection equipment provided by the embodiment of the utility model Figure 1 , wherein the scissor lift is in an ascending state;

[0049] Figure 2 A three-dimensional diagram showing the security inspection equipment provided by the embodiment of the utility model Figure 2 , wherein the scissor lift is in a descending state;

[0050] Figure 3 The three-dimensional diagram of the scissor lift provided by the embodiment of the utility model is shown. Figure 1 , which shows a right side view of a scissor lift, with the scissor lift in a raised state;

[0051] Figure 4 The three-dimensional diagram of the scissor lift provided by the embodiment of the utility model is shown. Figure 2 , which shows a left side view of a scissor lift, with the scissor lift in a raised state;

[0052] Figure 5 The three-dimensional diagram of the scissor lift provided by the embodiment of the utility model is shown. Figure 3 , wherein the scissor lift is in a descending state;

[0053] Figure 6 A schematic structural diagram showing a base, a first driving member and a connecting portion provided in an embodiment of the utility model is shown;

[0054] Figure 7 The three-dimensional diagram of the scissor lift provided by the embodiment of the utility model is shown. Figure 4 , wherein the carrying plate of the carrying part, the first electric roller and the baffle are not shown;

[0055] Figure 8 The three-dimensional diagram of the scissor lift provided by the embodiment of the utility model is shown. Figure 5 , which shows a bottom side view of the scissor lift, without showing the base, the first drive member and the connecting part.

[0056] Figure numerals: 1, base; 10, first steel; 101, first connecting seat; 102, middle plate; 103, weight reduction hole; 104, first plate; 105, fifth bearing seat; 106, seventh rotating shaft; 11, second steel; 111, second connecting seat; 112, second plate; 113, sixth bearing seat; 114, eighth rotating shaft; 12, third steel; 13, first threaded hole; 14, second threaded hole; 15, placement plate; 16, receiving hole; 17, third bearing seat; 18, the Four bearing seats; 19, handle; 2, bearing part; 20, first bottom plate; 201, first waist-shaped hole; 21, second bottom plate; 211, second waist-shaped hole; 22, first slide; 23, second slide; 24, fifth rotating shaft; 25, sixth rotating shaft; 26, bearing plate; 27, first electric roller; 28, baffle; 29, second limit block; 3, first driving member; 30, motor; 31, coupling; 32, reducer; 4, ball screw; 40, screw; 41, nut block; 5, connecting part; 5 0, connecting plate; 51, connecting hole; 52, first bearing seat; 53, second bearing seat; 54, third rotating shaft; 55, fourth rotating shaft; 6, first connecting frame; 60, first sub-connecting frame; 61, second sub-connecting frame; 62, first reinforcing frame; 63, first rotating shaft; 64, first limiting block; 7, second connecting frame; 70, third sub-connecting frame; 71, fourth sub-connecting frame; 72, second reinforcing frame; 73, second rotating shaft; 74, first roller; 75, second roller; 8, guide portion; 80, first A guide portion; 81. a first L-shaped block; 82. a slide rail; 83. a slider; 84. a second guide portion; 85. a second L-shaped block; 9. a frame; 90. a first accommodating space; 91. a second accommodating space; 92. a glass plate; 93. a limit frame; 94. an empty frame recovery device; 941. a first transport portion; 942. a detection device; 943. a second electric roller; 944. a blocker; 95. an empty frame return device; 951. a second transport portion; 952. a third electric roller; 100. a scissor lift. DETAILED DESCRIPTION

[0057] The following is an explanation of the implementation of the present invention by specific specific embodiments. Those skilled in the art can easily understand other advantages and functions of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0058] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0059] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0060] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0061] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0062] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0063] refer to Figures 1 to 3 The present application embodiment provides a scissor lift 100, which can be used in Figure 1 and Figure 2 The security inspection equipment shown is used for transport inspection and re-inspection of luggage in a tray, but is not limited thereto and can also be applied to other equipment on the security inspection line, such as automatic frame supply equipment, etc.

[0064] Exemplarily, the security inspection device includes a frame 9, and the frame 9 includes a first accommodating space 90 and a second accommodating space 91. Figure 1 , along the second direction (i.e. Figure 1 In the Y direction shown in the figure, the first accommodating space 90 is located on the right side, and the second accommodating space 91 is located on the left side.

[0065] For example, reference Figure 1 and Figure 2 The first accommodation space 90 is used to accommodate the scissor lift 100, so that the scissor lift 100 rises in the first accommodation space 90 along the first direction to Figure 1 or descend in the first direction to Figure 2 The state shown, that is, when Figure 2 The scissor lift 100 is shown along Figure 2 When the direction a shown moves upward, it can eventually switch to Figure 1 The status shown is Figure 1 The scissor lift 100 is shown along Figure 1 When the b direction shown moves downward, it can eventually switch to Figure 2 Status shown.

[0066] For example, reference Figure 1 and Figure 2 The second accommodation space 91 is used to accommodate the empty frame recovery device 94 and the empty frame return device 95. The empty frame recovery device 94 and the empty frame return device 95 are arranged along the first direction (i.e. Figure 2 The empty frame recovery device 94 is located above the empty frame reflow device 95. The empty frame recovery device 94 includes a first transport part 941 and a detection device 942. The first transport part 941 is used to transport the pallet. The first transport part 941 is composed of a plurality of transport parts along the third direction (i.e. Figure 2 The second electric rollers 943 are arranged in a spaced manner along the second direction (ie, the Z direction shown in FIG. Figure 2 The first electric roller 942 extends in the Y direction as shown, wherein a blocker 944 is provided between the two second electric rollers 943, and the detection device 942 is located at the upper left of the blocker 944.

[0067] Exemplarily, the first transport part 941 moves from left to right along the third direction (ie Figure 1When the detection device 942 detects that there is no luggage in the tray, the blocker 944 is in a non-blocking state, allowing the tray to continue to be transported to the right; when the detection device 942 detects that there is luggage in the tray, the blocker 944 is in a blocking state, not allowing the tray to continue to be transported to the right.

[0068] Exemplarily, the empty frame reflow device 95 includes a second transport unit 951, which is used to transport the pallet. The second transport unit 951 is composed of a plurality of third electric rollers 952 arranged at intervals along the third direction. Each third electric roller 952 extends along the second direction. The second transport unit 951 is arranged from right to left along the third direction (i.e. Figure 1 The pallet is transported in the direction f as shown in the figure, and the pallet without luggage is transported to the security inspection area for reuse.

[0069] It should be noted that the embodiment of the present application does not limit the number of the second electric roller 943 and the third electric roller 952, and can be three, five, eight, ten, etc.

[0070] For example, along the second direction (i.e. Figure 2 The rightmost side of the frame 9 is provided with a glass plate 92, and the glass plate 92 is arranged along the first direction (ie Figure 1 The X direction shown in FIG. 1 extends in the third direction (i.e. Figure 1 A limit frame 93 is provided on the rear side of the frame 9 for limiting the size and height of the luggage.

[0071] For example, reference Figures 3 to 6 The scissor lift 100 comprises: a base 1, a bearing part 2, a first driving member 3, a ball screw 4, a connecting part 5, a first connecting frame 6 and a second connecting frame 7, the bearing part 2 and the base 1 are connected along a first direction (i.e. Figure 3 The X direction shown in the figure) is arranged at intervals, and the carrying part 2 is used to carry and transport the pallet, combined with Figure 1 The glass plate 92 extends in the first direction and is higher than the bearing part 2, so that the bearing part 2 can be prevented from being affected by personnel when transporting the pallet, while ensuring the safety of personnel. Figure 6 A lead screw 40 extending in the Z direction (as shown) and a nut block 41 sleeved on the lead screw 40, the nut block 41 being threadedly connected to the connecting portion 5.

[0072] For example, reference Figure 6 Combined with Figure 4, one end of the first connecting frame 6 is rotatably connected to the connecting portion 5, and the other end is rotatably connected to the bearing portion 2; one end of the second connecting frame 7 is rotatably connected to the base 1, and the other end is slidably connected to the bearing portion 2; the first driving member 3 is used to drive the lead screw 40 to make a circular motion, so as to drive the nut block 41 to make a linear motion along the lead screw 40 in the receiving hole 16 described later, that is, along the third direction (i.e. Figure 4 The Z direction shown in the figure) moves, thereby driving the bearing part 2 to approach along the first direction (i.e. Figure 4 b direction shown) base 1 (reference Figure 5 ) or away from (i.e. Figure 4 a direction shown) base 1 (reference Figure 4 ); The first driving member 3 is a motor 30.

[0073] Specifically, refer to Figures 4 to 6 When the motor 30 drives the lead screw 40 to rotate, the nut block 41 is driven to move away from one end of the second connecting frame 7 (i.e. Figure 4 The connecting portion 5 moves in the direction away from one end of the second connecting frame 7, thereby driving one end of the first connecting frame 6 connected to the connecting portion 5 to move synchronously, that is, in the direction away from one end of the second connecting frame 7 (i.e. Figure 4 The first connecting frame 6 moves in the direction d as shown in the figure, so that the distance between one end of the first connecting frame 6 and one end of the second connecting frame 7 increases.

[0074] At the same time, the other end of the second connecting frame 7 rotatably connected to the first connecting frame 6 is slidably connected to the bearing portion 2. Driven by one end of the first connecting frame 6, the other end of the second connecting frame 7 moves in the same manner as one end of the first connecting frame 6, so that the other end of the second connecting frame 7 moves away from the other end of the first connecting frame 6 (i.e. Figure 4 d direction as shown) to increase the distance between the other end of the second connecting frame 7 and the other end of the first connecting frame 6, thereby driving the bearing portion 2 to move toward the base along the first direction (i.e. Figure 4 Move in the direction b) as shown to make it fall.

[0075] Similarly, when the motor 30 drives the lead screw 40 to rotate, the nut block 41 is driven to move toward the direction close to one end of the second connecting frame 7 (i.e. Figure 5 c direction shown in the figure) so that the connecting portion 5 moves toward one end of the second connecting frame 7, thereby driving one end of the first connecting frame 6 connected to the connecting portion 5 to move synchronously, that is, toward one end of the second connecting frame 7 (i.e. Figure 5 c direction) as shown in the figure, so that the distance between one end of the first connecting frame 6 and one end of the second connecting frame 7 is reduced.

[0076] At the same time, the other end of the second connecting frame 7 rotatably connected to the first connecting frame 6 is slidably connected to the bearing portion 2. Driven by one end of the first connecting frame 6, the other end of the second connecting frame 7 moves in the same manner as one end of the first connecting frame 6, so that the other end of the second connecting frame 7 moves closer to the other end of the first connecting frame 6 (i.e. Figure 5 c direction as shown), so that the distance between the other end of the second connecting frame 7 and the other end of the first connecting frame 6 is reduced, thereby driving the bearing portion 2 to move away from the base along the first direction (i.e. Figure 5 Move in the direction a) as shown to make it rise.

[0077] Combination Figure 1 and Figure 2 When the scissor lift 100 rises, the load-bearing portion 2 of the scissor lift 100 moves from left to right along the third direction (i.e. Figure 1 The pallet on the carrying part 2 is transported from left to right to the inspection area. When the staff completes the inspection of the luggage in the pallet, the scissor lift 100 descends, and the carrying part 2 moves from right to left along the third direction (i.e. Figure 2 The pallet that has completed the inspection is transported from right to left to the re-inspection area. Compared with using a worm gear to achieve the height change of the bearing part 2, using a ball screw 4 has at least the following advantages:

[0078] 1. The positioning accuracy is high, which can reach a precision of plus or minus 0.1 mm, which is a precision that worm gears cannot achieve.

[0079] 2. Suitable for high-speed working conditions, worm gears are more suitable for low-speed working conditions, because when the worm gear speed is high, it will cause serious wear on the tooth surface and serious heat, resulting in low efficiency. In other words, the higher the speed of the worm gear, the lower the efficiency. Therefore, worm gears are only suitable for low-speed working conditions.

[0080] 3. High transmission efficiency: the transmission efficiency of the ball screw 4 is 98%, and the transmission efficiency of the worm gear is about 70%.

[0081] 4. Save space. When a worm gear scissor lift is lowered, the worm will protrude backwards, occupying more external space. However, the scissor lift 100 of the present application only requires the nut block 41 to move along the extended length of the lead screw 40 when ascending and descending, without occupying external space.

[0082] At the same time, the space occupied by the ball screw 4 is much smaller than that of the electric cylinder. The larger the required load, the larger the size requirement of the electric cylinder will be, resulting in space encroachment, while the space occupied by the ball screw 4 is only the extended length of the screw 40; the ball screw 4 is safer than the cylinder because the gas can be compressed. If the gas in the cylinder suddenly fails, the scissors-type lift may suddenly drop and cause a safety accident, while the ball screw 4 will only move when driven by the motor 30, thereby driving the load-bearing part 2 to move, causing it to rise and fall. When the motor 30 stops moving, the ball screw 4 will also stop moving, and will not cause sudden movement of the scissors-type lift 100.

[0083] For example, reference Figure 6 The connecting portion 5 includes a Figure 6 The connecting plate 50 extends in the Y direction (as shown), and is provided with twelve connecting holes 51 for connecting with the above-mentioned nut block 41 and the slider 83 described later, but is not limited to this, and may also be six, eight, fifteen, twenty, etc. The connecting plate 50 is rectangular in shape, but is not limited to this, and may also be square, elliptical, triangular, etc.

[0084] For example, reference Figure 3 The base 1 includes two Figure 3 The first section steel 10 extends in the Z direction as shown, and the two first section steels 10 extend in the second direction (i.e. Figure 3 In the Y direction shown in the figure, the two first steel sections 10 are arranged at intervals. Along the third direction, the rear ends of the two first steel sections 10 are connected to the second steel sections 11. The second steel sections 11 extend along the second direction. The second steel sections 11 are provided with five first threaded holes 13 for connecting with the frame 9 of the security inspection equipment (refer to Figure 2 ), but not limited thereto, may also be three, four, seven, eight, etc.; the front end of the first steel section 10 is connected to a third steel section 12, the third steel section 12 extends along the second direction, and the third steel section 12 is provided with five second threaded holes 14 for connecting to the frame 9 of the security inspection equipment described later (reference Figure 2 ), but not limited to this, it can also be three, four, seven, eight, etc.

[0085] For example, reference Figure 3 and Figure 6 The base 1 is provided with a placement plate 15, and a receiving hole 16 is provided at the center of the placement plate 15. The nut block 41 of the ball screw 4 is located in the receiving hole 16. The receiving hole 16 is rectangular in shape, but is not limited thereto, and may also be square, elliptical, triangular, etc. The placement plate 15 is connected to the second steel 11 and connected to the third steel 12 along the third direction (i.e. Figure 3A third bearing seat 17 is provided on the side of the placement plate 15 close to the second steel section 11, and a fourth bearing seat 18 is provided on the side away from the second steel section 11.

[0086] For example, reference Figure 6 The rear end of the ball screw 4 is connected to the third bearing seat 17 , and the front end passes through the fourth bearing seat 18 and is connected to the reducer 32 through the coupling 31 , and the reducer 32 is connected to the motor 30 .

[0087] For example, reference Figure 6 Combined with Figure 3 , along the second direction (i.e. Figure 6 In the Y direction shown in the figure), guide portions 8 are provided on both sides of the placement plate 15. For the convenience of description, the left side is the first guide portion 80, and the right side is the second guide portion 84. That is, along the second direction, the first guide portion 80 and the second guide portion 84 are respectively provided on both sides of the lead screw 40, and the first guide portion 80 and the second guide portion 84 are both provided along the third direction (i.e. Figure 6 The connecting plate 50 extends in the Z direction as shown in the figure and is connected to the connecting plate 50 so that the connecting plate 50 can move along the third direction relative to the base 1.

[0088] It should be noted that the embodiment of the present application does not limit the number of guide parts 8. It can include two guide parts as shown in the embodiment of the present application, namely the first guide part 80 and the second guide part 84, or it can include three, four, five, etc.

[0089] For example, reference Figure 6 The two ends of the first guide portion 80 are fixed to the placement plate 15 through the first L-shaped block 81, and the two ends of the second guide portion 84 are fixed to the placement plate 15 through the second L-shaped block 85. The embodiment of the present application does not limit the shapes of the first L-shaped block 81 and the second L-shaped block 85, as long as the two ends of the first guide portion 80 and the two ends of the second guide portion 84 can be fixed to the placement plate 15.

[0090] The first guide portion 80 and the second guide portion 84 have the same structure, so the embodiment of the present application takes the first guide portion 80 as an example to introduce its specific structure.

[0091] For example, reference Figure 6The first guide portion 80 includes a slide rail 82 and a slider 83. The slide rail 82 extends along the third direction. The slider 83 is connected to the slide rail 82 in a slidable manner along the third direction. The slider 83 is connected to the connecting plate 50 through the above-mentioned connecting hole 51. Along the third direction, both ends of the slide rail 82 are fixed to the placement plate 15 through the first L-shaped block 81; when the connecting plate 50 is driven to move along the third direction, the slider 83 can move along the slide rail 82, so that the movement of the connecting plate 50 can be guided and limited by the slide rail 82, ensuring that it can move linearly along the extension direction of the slide rail 82, thereby reducing the possibility of the connecting plate 50 tipping over during the movement.

[0092] It should be noted that the embodiment of the present application does not limit the specific structure of the first guide portion 80, which can be the slide rail 82 and slider 83 shown in the embodiment of the present application, or a groove and roller structure, as long as it can achieve the function of guiding and limiting the connecting plate 50 along the third direction.

[0093] Exemplarily, handles 19 are provided between the third bearing seat 17 and the first L-shaped block 81, between the third bearing seat 17 and the second L-shaped block 85, between the fourth bearing seat 18 and the first L-shaped block 81, and between the fourth bearing seat 18 and the second L-shaped block 85. The handles 19 are inverted U-shape. It should be noted that the embodiment of the present application does not limit the specific number of handles 19. For example, it can be four as shown in the embodiment of the present application, or it can be two, three, five, etc.

[0094] For example, reference Figures 3 to 7 A bearing seat is provided on one side of the connecting plate 50 facing away from the slider 83. The bearing seat and the slider 83 are located on opposite sides of the connecting plate 50. The bearing seat includes a first bearing seat 52 and a second bearing seat 53. The first bearing seat 52 includes a first bearing seat 52 and a second bearing seat 53. Figure 5 The second bearing seat 53 includes two bearing seats arranged in a spaced relationship along the second direction (ie, Figure 4 The two first bearing seats 52 are both located above the first guide portion 80, and the two second bearing seats 53 are both located above the second guide portion 84. The two first bearing seats 52 are rotatably connected to one end of the first sub-connecting frame 60 described later via the third rotating shaft 54, and the two second bearing seats 53 are rotatably connected to one end of the second sub-connecting frame 61 described later via the fourth rotating shaft 55.

[0095] Exemplarily, an oil-free bushing is provided between one end of the first sub-connecting frame 60 and the third rotating shaft 54 ​​to reduce the friction between the two and make the rotation smoother. A nylon gasket is provided between one end of the first sub-connecting frame 60 and the first bearing seat 52 to prevent wear on one end of the first sub-connecting frame 60 and reduce noise. An oil-free bushing is provided between one end of the second sub-connecting frame 61 and the fourth rotating shaft 55 to reduce the friction between the two and make the rotation smoother. A nylon gasket is provided between one end of the second sub-connecting frame 61 and the second bearing seat 53 to prevent wear on one end of the second sub-connecting frame 61 and reduce noise.

[0096] Exemplarily, the bearing seat and the slider 83 are arranged on opposite sides of the connecting plate 50, so that the limiting effect of the slider 83 and the slide rail 82 on the connecting plate 50 can be directly transmitted to the first sub-connecting frame 60 and the second sub-connecting frame 61 rotatably connected to the bearing seat, thereby ensuring the stability of the movement of the first sub-connecting frame 60 and the second sub-connecting frame 61.

[0097] For example, reference Figures 3 to 5 The first steel section 10 is provided with a first connection seat 101 and a second connection seat 111, and the first connection seat 101 and the second connection seat 111 are connected to the above-mentioned placement plate 15 along the third direction (i.e. Figure 3 The intermediate plate 102 is arranged at intervals (in the Z direction shown) and is connected to the third steel section 12 through the intermediate plate 102. The motor 30 is located between the intermediate plate 102 and the placement plate 15. The intermediate plate 102 extends along the second direction and is provided with eight weight reduction holes 103, but is not limited thereto. There may also be five, seven, ten, etc. The two ends of the intermediate plate 102 are connected to the first steel section 10, and the intermediate plate 102 is integrally formed with the first connecting seat 101 and the second connecting seat 111.

[0098] Exemplarily, the first connection base 101 and the second connection base 111 are connected along the second direction (ie Figure 3 The first connecting seat 101 and the second connecting seat 111 are arranged at intervals along the Y direction shown in the figure, and the first connecting seat 101 and the second connecting seat 111 are inverted U-shaped. The first connecting seat 101 is threadedly connected with a first plate 104, and the first plate 104 is provided with two fifth bearing seats 105 arranged at intervals along the second direction. One end of the third sub-connecting frame 70 described later is rotatably connected to the two fifth bearing seats 105 through the seventh rotating shaft 106, so that the height of one end of the third sub-connecting frame 70 is the same as the height of one end of the first sub-connecting frame 60. The second connecting seat 111 is threadedly connected with a second plate 112, and the second plate 112 is provided with two sixth bearing seats 113 arranged at intervals along the second direction. One end of the fourth sub-connecting frame 71 described later is rotatably connected to the two sixth bearing seats 113 through the eighth rotating shaft 114, so that the height of one end of the fourth sub-connecting frame 71 is the same as the height of one end of the second sub-connecting frame 61.

[0099] That is to say, one end of the third sub-connecting frame 70 and one end of the fourth sub-connecting frame 71 can rotate relative to the fifth bearing seat 105 and the sixth bearing seat 113, but cannot move relative to the base.

[0100] Exemplarily, an oil-free bushing is provided between one end of the third sub-connecting frame 70 and the seventh rotating shaft 106 to reduce the friction between the two and make the rotation smoother, and a nylon gasket is provided between one end of the third sub-connecting frame 70 and the two fifth bearing seats 105 to prevent wear on one end of the third sub-connecting frame 70 and reduce noise; an oil-free bushing is provided between one end of the fourth sub-connecting frame 71 and the eighth rotating shaft 114 to reduce the friction between the two and make the rotation smoother, and a nylon gasket is provided between one end of the fourth sub-connecting frame 71 and the two sixth bearing seats 113 to prevent wear on one end of the fourth sub-connecting frame 71 and reduce noise.

[0101] For example, reference Figure 4 and Figure 7 The first connecting frame 6 includes a first sub-connecting frame 60 and a second sub-connecting frame 61. The first sub-connecting frame 60 and the second sub-connecting frame 61 are arranged along the second direction (ie Figure 7 The first sub-connecting frame 60 and the second sub-connecting frame 61 are spaced apart in the Y direction as shown in the figure, two first reinforcing frames 62 are connected between the first sub-connecting frame 60 and the second sub-connecting frame 61, and the two first reinforcing frames 62 are spaced apart; the second connecting frame 7 includes a third sub-connecting frame 70 and a fourth sub-connecting frame 71, the third sub-connecting frame 70 and the fourth sub-connecting frame 71 are spaced apart in the second direction, two second reinforcing frames 72 are connected between the third sub-connecting frame 70 and the fourth sub-connecting frame 71, and the two second reinforcing frames 72 are spaced apart.

[0102] For example, refer to Figure 3 and Figure 4 Combined with Figure 7 The first sub-connecting frame 60 intersects with the third sub-connecting frame 70 and is rotatably connected through the first rotating shaft 63, and the second sub-connecting frame 61 intersects with the fourth sub-connecting frame 71 and is rotatably connected through the second rotating shaft 73; the first sub-connecting frame 60 and the second sub-connecting frame 61 are both provided with a first limit block 64, and the first limit block 64 is used to abut against the third sub-connecting frame 70 and the fourth sub-connecting frame 71 to prevent the scissor-type lift 100 from descending too low and damaging the scissor-type lift 100.

[0103] For example, reference Figure 7 Combined with Figure 5Two first reinforcing frames 62 are connected between the first sub-connecting frame 60 and the second sub-connecting frame 61 to ensure the synchronization of the movement of the first sub-connecting frame 60 and the second sub-connecting frame 61, while ensuring their bearing capacity for the bearing part 2 and their stability during movement. Two second reinforcing frames 72 are connected between the third sub-connecting frame 70 and the fourth sub-connecting frame 71 to ensure the synchronization of the movement of the third sub-connecting frame 70 and the fourth sub-connecting frame 71, while ensuring their bearing capacity for the bearing part 2 and their stability during movement.

[0104] For example, reference Figures 3 to 7 The first sub-connecting frame 60, the second sub-connecting frame 61, the third sub-connecting frame 70 and the fourth sub-connecting frame 71 are all square hollow steel pipes. The third rotating shaft 54 ​​passes through one end of the first sub-connecting frame 60 to be connected to the first bearing seat 52, the fourth rotating shaft 55 passes through one end of the second sub-connecting frame 61 to be connected to the second bearing seat 53, the seventh rotating shaft 106 passes through one end of the third sub-connecting frame 70 to be connected to the fifth bearing seat 105, and the eighth rotating shaft 114 passes through one end of the fourth sub-connecting frame 71 to be connected to the sixth bearing seat 113.

[0105] For example, reference Figure 8 Combined with Figure 4 The bearing part 2 includes a bottom plate, the bottom plate includes a first bottom plate 20 and a second bottom plate 21, and the first bottom plate 20 and the second bottom plate 21 are arranged along a second direction (ie Figure 4 The first bottom plate 20 is provided with a first slide groove 22 on one side facing the first sub-connecting frame 60 and the third sub-connecting frame 70, and the second bottom plate 21 is provided with a second slide groove 23 on one side facing the second sub-connecting frame 61 and the fourth sub-connecting frame 71. The first slide groove 22 and the second slide groove 23 are both arranged along the third direction (i.e. Figure 8 The Z direction shown extends.

[0106] Exemplarily, the other end of the first sub-connecting frame 60 is rotatably connected to the first base plate 20 via the fifth rotating shaft 24, the other end of the second sub-connecting frame 61 is rotatably connected to the second base plate 21 via the sixth rotating shaft 25, the other end of the third sub-connecting frame 70 is fixedly connected to the first roller 74, and the first roller 74 is slidably connected to the first slide groove 22 along the third direction, and the other end of the fourth sub-connecting frame 71 is fixedly connected to the second roller 75, and the second roller 75 is slidably connected to the second slide groove 23 along the third direction.

[0107] That is, the first bottom plate 20 is downward along the first direction (i.e. Figure 4The first bottom plate 20 is bent in the direction b as shown to form a first slide groove 22. The width of the first bottom plate 20 is selected according to the width of the bearing portion 2. At the same time, the width of the first slide groove 22 formed by bending the first bottom plate 20 downward is greater than the thickness of the first roller 74 to prevent the first roller 74 from hitting the bending part of the first bottom plate 20 during movement. At the same time, the first bottom plate 20 is connected to the later-described bearing disk 26 by fasteners passing through the first waist-shaped hole 201. After bending, the first bottom plate 20 can ensure that the first waist-shaped hole 201 is not deformed.

[0108] Similarly, the second bottom plate 21 is bent downward along the first direction (ie Figure 4 The second bottom plate 21 is provided with a second sliding groove 23, the width of the second bottom plate 21 is selected according to the width of the bearing portion 2, and the width of the second sliding groove 23 formed by the second bottom plate 21 being bent downward is greater than the thickness of the second roller 75 to prevent the second roller 75 from hitting the bending part of the second bottom plate 21 during movement. At the same time, the second bottom plate 21 is connected to the bearing disk 26 described later by fasteners passing through the second waist-shaped hole 211. After the second bottom plate 21 is bent, it can ensure that the second waist-shaped hole 211 is not deformed.

[0109] Combination Figure 5 , by providing a first slide groove 22 and a second slide groove 23 extending along the third direction, and the other end of the third sub-connecting frame 70 is connected to the first slide groove 22 in a slidable manner along the third direction through the first roller 74, and the other end of the fourth sub-connecting frame 71 is connected to the second slide groove 23 in a slidable manner along the third direction through the second roller 75, so that when the connecting plate 50 drives one end of the first sub-connecting frame 60 and one end of the second sub-connecting frame 61 to move along the third direction, the other end of the third sub-connecting frame 70 and the other end of the fourth sub-connecting frame 71 can respectively move synchronously along the first slide groove 22 and the second slide groove 23, ensuring the synchronization of the movement of one end of the first sub-connecting frame 60 and the other end of the third sub-connecting frame 70 and one end of the second sub-connecting frame 61 and the other end of the fourth sub-connecting frame 71, thereby ensuring the stability of the movement of the first base plate 20 and the second base plate 21 connected thereto.

[0110] For example, reference Figure 8 A second limit block 29 is provided in each of the first slide groove 22 and the second slide groove 23. The second limit block 29 is used to limit the first roller 74 and the second roller 75 to move along the third direction (i.e. Figure 8 The fourth sub-connecting frame 71 limits the final distance of movement of the third sub-connecting frame 70 toward the first sub-connecting frame 60 and the final distance of movement of the fourth sub-connecting frame 71 toward the second sub-connecting frame 61. In other words, the maximum distance that the first base plate 20 and the second base plate 21 rise along the first direction is limited.

[0111] That is to say, when the supporting part 2 moves upward along the first direction, the second limit block 29 will abut against the first roller 74 and the second roller 75 to limit the final distance of its upward movement, thereby preventing the third sub-connecting frame 70 from colliding with the first sub-connecting frame 60 after being too close to each other, and preventing the fourth sub-connecting frame 71 from colliding with the second sub-connecting frame 61 after being too close to each other.

[0112] For example, reference Figure 3 and Figure 8 The carrying portion 2 also includes a carrying plate 26, which is connected to the first bottom plate 20 and the second bottom plate 21, and is arranged above the first bottom plate 20 and the second bottom plate 21 along the first direction. Five first electric rollers 27 are arranged on the carrying plate 26, but it is not limited to this, and can also be three, seven, eight, ten, etc. Two adjacent first electric rollers 27 are connected by a conveyor belt.

[0113] Exemplarily, each first electric roller 27 extends along the second direction. Along the second direction, baffles 28 are connected to both sides of the carrying plate 26. The baffles 28 extend along the first direction to limit the tray.

[0114] The first direction (i.e. Figure 3 The X direction shown), the second direction (i.e. Figure 3 The Y direction shown) and the third direction (i.e. Figure 3 The first direction, the second direction and the third direction are perpendicular to each other, but are not limited thereto, as long as the first direction, the second direction and the third direction intersect with each other respectively.

[0115] Combination Figure 6 In general, the circular motion of the ball screw 4 is converted into the linear motion of the bearing part 2, so that the height of the bearing part 2 changes, and the bearing part 2 rises (ie, moves away from the base 1) and falls (ie, moves closer to the base 1).

[0116] For example, reference Figures 3 to 8 Specifically, when the bearing portion 2 needs to be raised (ie, away from the base 1), Figure 5 The state shown is converted to Figure 3 In the state shown, the motor 30 rotates forward to drive the lead screw 40 to make a positive circular motion, thereby driving the nut block 41 to move away from the second steel section 11 (i.e. Figure 5 c direction shown in the figure), the connecting plate 50 and the slider 83 move synchronously, so that one end of the first sub-connecting frame 60 connected to the connecting plate 50 moves in a direction away from the second steel section 11, that is, moves toward one end close to the third sub-connecting frame 70 (i.e. Figure 5 c direction shown in the figure), one end of the second sub-connecting frame 61 synchronously moves in a direction away from the second steel section 11, that is, moves toward one end close to the fourth sub-connecting frame 71.

[0117] At this time, the first roller 74 at the other end of the third sub-connecting frame 70 moves along the first sliding groove 22 in a direction away from the second steel section 11 (i.e. Figure 5 c direction shown), that is, the other end of the third sub-connecting frame 70 moves toward the other end close to the first sub-connecting frame 60, and the second roller 75 at the other end of the fourth sub-connecting frame 71 moves along the second slide groove 23 in the direction away from the second steel section 11, that is, the other end of the fourth sub-connecting frame 71 moves toward the other end close to the second sub-connecting frame 61.

[0118] At this time, the first bottom plate 20 connected to the first sub-connection frame 60 and the third sub-connection frame 70 moves upward in the first direction, that is, moves in a direction away from the base 1 (ie, Figure 5 The second bottom plate 21 connected to the second sub-connecting frame 61 and the fourth sub-connecting frame 71 moves upward along the first direction, that is, moves in a direction away from the base 1, thereby driving the carrying plate 26 connected to the first bottom plate 20 and the second bottom plate 21 to move upward along the first direction, so that the carrying part 2 moves in the direction away from the base 1 along the first direction (that is, Figure 5 Movement in the direction a) shown.

[0119] Similarly, when the carrying part 2 needs to be lowered (ie, close to the base 1), Figure 3 The state shown is converted to Figure 5 In the state shown, the motor 30 reverses to drive the lead screw 40 to make a reverse circular motion, thereby driving the nut block 41 to move closer to the second steel section 11 (i.e. Figure 3 The connecting plate 50 and the slider 83 move synchronously, so that one end of the first sub-connecting frame 60 connected to the connecting plate 50 moves toward the direction close to the second steel section 11, that is, moves away from the end of the third sub-connecting frame 70, and one end of the second sub-connecting frame 61 moves synchronously toward the direction close to the second steel section 11, that is, moves away from the end of the fourth sub-connecting frame 71 (i.e. Figure 3 d direction shown).

[0120] At this time, the first roller 74 at the other end of the third sub-connecting frame 70 moves along the first slide groove 22 toward the direction close to the second steel section 11, that is, the other end of the third sub-connecting frame 70 moves away from the other end of the first sub-connecting frame 60 (i.e. Figure 3 d direction as shown), the second roller 75 at the other end of the fourth sub-connecting frame 71 moves along the second slide groove 23 toward the direction close to the second steel section 11, that is, the other end of the fourth sub-connecting frame 71 moves away from the other end of the second sub-connecting frame 61.

[0121] At this time, the first bottom plate 20 connected to the first sub-connection frame 60 and the third sub-connection frame 70 is moved downward along the first direction (i.e. Figure 3The second bottom plate 21 connected to the second sub-connecting frame 61 and the fourth sub-connecting frame 71 moves downward along the first direction, that is, moves in the direction close to the base 1, thereby driving the carrying plate 26 connected to the first bottom plate 20 and the second bottom plate 21 to move downward along the first direction, so that the carrying part 2 moves along the first direction to the direction close to the base 1 (that is, Figure 3 Movement in the b direction as shown.

[0122] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A scissor lift, characterized in that: include: Base; A bearing portion, the bearing portion and the base are spaced apart along a first direction, and the bearing portion is used to bear and transport the pallet; a first driving member; A ball screw, the ball screw comprising a screw and a nut block, the nut block is sleeved on the screw, and the screw is connected to the first driving member; a connecting portion extending along a second direction and connected to the nut block, wherein the first direction intersects with the second direction; a first connecting frame, one end of which is rotatably connected to the connecting portion, and the other end of which is rotatably connected to the bearing portion; a second connecting frame, one end of which is rotatably connected to the base, and the other end of which is slidably connected to the bearing portion, and the second connecting frame intersects with the first connecting frame and is rotatably connected; The first driving member is used to drive the lead screw to rotate, so as to drive the nut block and the connecting portion to move relative to the base along a third direction, thereby driving the bearing portion to approach or move away from the base along the first direction, and the third direction intersects with the second direction.

2. The scissor lift according to claim 1, characterized in that: The first connecting frame is provided with a first limit block, which is located below the connection point between the first connecting frame and the second connecting frame, and is used to abut against the second connecting frame to limit the final distance that the bearing part moves along the first direction close to the base.

3. The scissor lift according to claim 1, characterized in that: The scissor lift also includes two guide parts, which are arranged on both sides of the lead screw along the second direction, and each of the guide parts extends along the third direction and is connected to the connecting part so that the connecting part moves relative to the base along the third direction.

4. The scissor lift according to claim 3, characterized in that: Each of the guide parts includes a slide rail and a slider, the slide rail extends along the third direction, the slider is connected to the slide rail in a slidable manner along the third direction, and the slider is connected to the connecting part.

5. The scissor lift according to claim 4, characterized in that: The first connecting frame includes a first sub-connecting frame and a second sub-connecting frame, the first sub-connecting frame and the second sub-connecting frame are spaced apart along the second direction, and a first reinforcing frame is connected between the first sub-connecting frame and the second sub-connecting frame; the second connecting frame includes a third sub-connecting frame and a fourth sub-connecting frame, the third sub-connecting frame and the fourth sub-connecting frame are spaced apart along the second direction, and a second reinforcing frame is connected between the third sub-connecting frame and the fourth sub-connecting frame, the first sub-connecting frame intersects with the third sub-connecting frame and is rotatably connected via a first rotating shaft, and the second sub-connecting frame intersects with the fourth sub-connecting frame and is rotatably connected via a second rotating shaft.

6. The scissor lift according to claim 5, characterized in that: The connecting portion includes a connecting plate, a bearing seat is provided on a side of the connecting plate facing away from the slider, the bearing seat and the slider are located on opposite sides of the connecting plate, the bearing seat includes a first bearing seat and a second bearing seat, the first bearing seat is rotatably connected to one end of the first sub-connecting frame via a third rotating shaft, and the second bearing seat is rotatably connected to one end of the second sub-connecting frame via a fourth rotating shaft.

7. The scissor lift according to claim 6, characterized in that: The bearing portion includes a bottom plate, and the bottom plate includes a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are arranged at intervals along the second direction, the first bottom plate is provided with a first slide groove on a side facing the first sub-connecting frame and the third sub-connecting frame, and the second bottom plate is provided with a second slide groove on a side facing the second sub-connecting frame and the fourth sub-connecting frame, the first slide groove and the second slide groove both extend along the third direction, the other end of the first sub-connecting frame is rotatably connected to the first bottom plate through a fifth rotating shaft, the other end of the second sub-connecting frame is rotatably connected to the second bottom plate through a sixth rotating shaft, the other end of the third sub-connecting frame is connected to the first slide groove in a slidable manner along the third direction, and the other end of the fourth sub-connecting frame is connected to the second slide groove in a slidable manner along the third direction.

8. The scissor lift according to claim 7, characterized in that: A first roller is provided at the other end of the third sub-connecting frame, and the first roller is connected to the first slide groove in a slidable manner along the third direction. A second roller is provided at the other end of the fourth sub-connecting frame, and the second roller is connected to the second slide groove in a slidable manner along the third direction.

9. The scissor lift according to claim 8, characterized in that: The inner wall of the first slide groove and the inner wall of the second slide groove are both provided with a second limit block, and the second limit block is used to abut against the first roller and the second roller to limit the final distance that the bearing part moves away from the base along the first direction.

10. The scissor lift according to claim 3, characterized in that: The scissor lift also includes a placement plate, which is arranged on the base. A receiving hole is opened at the center of the placement plate. Along the second direction, the guide parts are connected to both sides of the placement plate, and the nut block is located in the receiving hole.

11. The scissor lift according to claim 10, characterized in that Along the third direction, a third bearing seat and a fourth bearing seat are respectively provided on both sides of the placement plate, one end of the lead screw is connected to the third bearing, and the other end passes through the fourth bearing seat and is connected to the first driving member, and a plurality of handles are also spaced apart on both sides of the placement plate, and the plurality of handles are provided between the two guide parts.

12. The scissor lift according to claim 5, characterized in that: The base is provided with a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are spaced apart along the second direction, the first connecting seat is provided with a fifth bearing seat, one end of the third sub-connecting frame is rotatably connected to the fifth bearing seat via a seventh rotating shaft, the second connecting seat is provided with a sixth bearing seat, and one end of the fourth sub-connecting frame is rotatably connected to the sixth bearing seat via an eighth rotating shaft.

13. The scissor lift according to claim 1, characterized in that: The scissor lift also includes a reducer, which is respectively connected to the first driving member and the lead screw.

14. A security inspection device, characterized in that: It comprises a frame and a scissor-type lift as described in any one of claims 1 to 13, wherein the frame is provided with a first accommodating space for accommodating the scissor-type lift so that the scissor-type lift can rise or fall in the first accommodating space.

15. The security inspection device according to claim 14, characterized in that: The scissor lift rises or falls to switch the carrying portion between a first position and a second position. In the first position, the carrying portion is used to transport the pallet to the inspection area along the third direction. In the second position, the carrying portion is used to transport the pallet to the re-inspection area.

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