An elevator and security system

Abstract

The present application belongs to the field of transportation or storage devices, such as loading or unloading conveyors, plant conveyor systems or pneumatic pipe conveyors, and particularly relates to an elevator and a security system. In order to solve the technical problem that the distance between the opening of the elevator and the lifting platform is far when the lifting platform is located at the lower part of the elevator, so there is a risk that the luggage will be damaged after falling into the elevator. The present application provides an elevator, which comprises a frame and a lifting platform, the upper end of the frame is provided with a placing opening, the elevator further comprises a detection mechanism, a protective plate and a driving structure for driving the movement of the protective plate, the movement stroke of the protective plate has a blocking position for blocking the placing opening and an opening position for opening the placing opening. The present application also provides a security system comprising the above-mentioned elevator. When the detection mechanism detects that the lifting platform leaves from the upper part of the elevator, the driving structure controls the protective plate to block the placing opening of the elevator, so as to avoid the luggage from being damaged after falling into the elevator.

Description

Technical Field

[0001] This invention relates to the field of transportation or storage devices, such as conveyors for loading or unloading, workshop conveyor systems, or pneumatic pipeline conveyors, and particularly to an elevator and security inspection system. Background Technology

[0002] If any abnormalities are found in luggage during airport security checks, security personnel will open and inspect the luggage.

[0003] The invention patent application with publication number CN 113238292 A and publication date of August 10, 2021 discloses an automatic conveying method for security checkpoints. The method uses a conveyor roller to send a baggage container filled with luggage through an X-ray machine for inspection. If there is a problem with the luggage, it will be conveyed to the baggage opening station module via the baggage waiting-to-be-inspected conveyor roller. The baggage opening station module includes a lift (i.e., an elevator). After the staff opens and inspects the luggage at the baggage opening station module, they place the inspected luggage on the lift. The lift can then transport the luggage to the lower-level baggage return conveyor roller for re-inspection. The luggage will then be re-inspected by an X-ray machine.

[0004] The lift includes a frame and a carrying platform (i.e., lifting platform) set on the frame for carrying luggage. The upper opening of the frame forms a placement opening for placing luggage on the carrying platform. Photoelectric sensors are installed on the carrying platform. When no luggage is blocking the photoelectric sensors on the carrying platform, the carrying platform rises again to the top position (i.e., the placement opening) to receive the next piece of luggage after it has been opened for inspection.

[0005] However, after the lifting platform of the aforementioned elevator descends, the upper placement opening of the elevator is unobstructed. During the baggage inspection process, staff may drop luggage into the elevator. Since the placement opening is far from the lifting platform when it is located at the bottom of the elevator, there is a risk that luggage will be damaged after falling into the elevator. Summary of the Invention

[0006] The purpose of this invention is to provide an elevator and security inspection system to solve the technical problem in the prior art where, due to the opening at the top of the elevator and the distance between the elevator placement opening and the elevator platform when the elevator platform is located at the bottom of the elevator, there is a risk that luggage will be damaged after falling into the elevator.

[0007] To achieve the above objectives, the technical solution of the elevator provided by the present invention is as follows:

[0008] An elevator includes a frame and a lifting platform mounted on the frame. The upper end of the frame has a placement opening for placing luggage on the lifting platform. The elevator also includes a detection mechanism for detecting whether the lifting platform is near the placement opening, a protective plate, and a drive structure for driving the protective plate to move. The protective plate has a blocking position that completely blocks the placement opening and an opening position that opens the placement opening during its movement stroke. The drive structure can control the protective plate to switch between the opening position and the blocking position according to the detection data of the detection mechanism.

[0009] The beneficial effects are as follows: This invention is an improved invention. When using this lift, after the detection mechanism detects that the lifting platform has left the top of the lift, the drive structure controls the protective plate to block the placement opening of the lift, keeping the protective plate in a sealed position, thereby preventing luggage from falling into the lift and being damaged. When the detection mechanism detects that the lifting platform has returned to the top of the lift, the drive structure controls the protective plate to open the placement opening of the lift, keeping the protective plate in an open position, thus facilitating the placement of items onto the lifting platform. At this time, the distance between the lifting platform and the placement opening of the lift is relatively short, so even if items fall into the lift, they will not be damaged. In summary, this technical solution can effectively eliminate the risk of luggage being damaged after falling into the lift.

[0010] Furthermore, the elevator also includes a support plate with a space corresponding to the placement opening above and below to avoid interference between the support plate and the lifting platform. The drive structure includes a connecting plate mounted on the support plate for guiding movement and a drive device for controlling the reciprocating movement of the connecting plate. The connecting plate is connected to the protective plate to drive the protective plate to move.

[0011] The beneficial effect is that, compared with the technical solution of controlling the opening and closing of the elevator placement port by controlling the entire protective plate, the opening and closing of the elevator placement port can be conveniently controlled by the connecting plate.

[0012] Furthermore, the support plate includes two parallel horizontal plates, the space between the two horizontal plates forms a space corresponding to the placement opening above and below, and at least one horizontal plate is provided with a guide structure for guiding the connecting plate, the connecting plate spanning between the two horizontal plates.

[0013] The beneficial effect is that the connecting plate can be guided by the guide structure, which makes it easier for the connecting plate to drive the protective plate to open and close the placement port of the elevator.

[0014] Furthermore, guide support grooves are provided above the positions corresponding to the two horizontal plates on the frame. The openings of the two guide support grooves are arranged opposite each other in the longitudinal direction. The two ends of the protective plate are supported in the guide support grooves and can slide along the guide support grooves.

[0015] The beneficial effects are as follows: by setting the guide support groove, on the one hand, the protective plate can be supported to prevent it from moving downward under the action of gravity; on the other hand, the protective plate can be guided so that it can move along a predetermined trajectory.

[0016] Furthermore, the lower part of the guide support groove is provided with a vertically extending baffle, and the connecting plate is provided with a clearance groove for the baffle to be inserted at the position corresponding to the baffle.

[0017] The beneficial effect is that the retaining edge extends into the clearance groove, and when the connecting plate wants to sway up and down, the retaining edge can stop the connecting plate, thereby preventing the connecting plate from swaying.

[0018] Furthermore, the driving device includes a guide rail, a slider that slides with the guide rail, a power source, a driving wheel, a driven wheel, and a conveyor belt or conveyor chain disposed between the driving wheel and the driven wheel. The guide rail and the slider constitute a guiding structure. The power source drives the driving wheel to rotate. The conveyor chain or conveyor belt is connected to the slider in a transmission manner. The slider is connected to the connecting plate in a transmission manner so that the slider drives the connecting plate to move.

[0019] The beneficial effects are as follows: the drive device can drive the drive wheel and the driven wheel to drive the conveyor belt or conveyor chain to move. The conveyor belt or conveyor chain can drive the slider to move, thereby causing the slider to drive the connecting plate to move, and then causing the connecting plate to drive the protective plate to open and close the placement port of the elevator.

[0020] Furthermore, the protective plate is a flexible chain plate.

[0021] The beneficial effects are as follows: by setting the protective plate as a flexible chain plate, in one case, the protective plate can be stacked on one side of the elevator when the elevator placement opening is opened, thereby reducing the space occupied by the protective plate; in another case, compared with the technical solution of the protective plate being a rigid plate, the flexible chain plate can be bent, thereby allowing the protective plate to be changed from a horizontal setting to a vertical setting, which is conducive to the protective plate hanging down along the side of the elevator and improving the space utilization rate.

[0022] Furthermore, the protective plate is a flexible chain plate, and the support plate is provided with an erection structure so that the protective plate has a horizontal part and a naturally hanging vertical part after being erected on the erection structure.

[0023] The beneficial effect is that the overlapping structure allows the protective panel to hang down naturally, improving space utilization.

[0024] Furthermore, the support plate is provided with perforations for the protective plate to pass through, and the sidewalls of the perforations form an erection structure.

[0025] The beneficial effect is that by setting the erection structure as perforated, the two side walls opposite the perforation can cooperate with the stop of the protective plate, thereby preventing the protective plate from shaking inside the perforation.

[0026] To achieve the above objectives, the technical solution of the security inspection system provided by this invention is as follows:

[0027] A security inspection system includes an inspection platform for baggage inspection and a lift mounted on one side of the inspection platform. The lift includes a frame and a lifting platform mounted on the frame. The upper end of the frame has a placement opening for placing luggage on the lifting platform. The lift also includes a detection mechanism for detecting whether the lifting platform is near the placement opening, a protective plate, and a drive structure for driving the protective plate to move. The protective plate has a blocking position that completely blocks the placement opening and an open position that opens the placement opening during its movement stroke. The drive structure can control the protective plate to switch between the open position and the blocking position according to the detection data of the detection mechanism.

[0028] The beneficial effects are as follows: This invention is an improved invention. When using this lift, after the detection mechanism detects that the lifting platform has left the top of the lift, the drive structure controls the protective plate to block the placement opening of the lift, keeping the protective plate in a sealed position, thereby preventing luggage from falling into the lift and being damaged. When the detection mechanism detects that the lifting platform has returned to the top of the lift, the drive structure controls the protective plate to open the placement opening of the lift, keeping the protective plate in an open position, thus facilitating the placement of items onto the lifting platform. At this time, the distance between the lifting platform and the placement opening of the lift is relatively short, so even if items fall into the lift, they will not be damaged. In summary, this technical solution can effectively eliminate the risk of luggage being damaged after falling into the lift.

[0029] Furthermore, the elevator also includes a support plate with a space corresponding to the placement opening above and below to avoid interference between the support plate and the lifting platform. The drive structure includes a connecting plate mounted on the support plate for guiding movement and a drive device for controlling the reciprocating movement of the connecting plate. The connecting plate is connected to the protective plate to drive the protective plate to move.

[0030] The beneficial effect is that, compared with the technical solution of controlling the opening and closing of the elevator placement port by controlling the entire protective plate, the opening and closing of the elevator placement port can be conveniently controlled by the connecting plate.

[0031] Furthermore, the support plate includes two parallel horizontal plates, the space between the two horizontal plates forms a space corresponding to the placement opening above and below, and at least one horizontal plate is provided with a guide structure for guiding the connecting plate, the connecting plate spanning between the two horizontal plates.

[0032] The beneficial effect is that the connecting plate can be guided by the guide structure, which makes it easier for the connecting plate to drive the protective plate to open and close the placement port of the elevator.

[0033] Furthermore, guide support grooves are provided above the positions corresponding to the two horizontal plates on the frame. The openings of the two guide support grooves are arranged opposite each other in the longitudinal direction. The two ends of the protective plate are supported in the guide support grooves and can slide along the guide support grooves.

[0034] The beneficial effects are as follows: by setting the guide support groove, on the one hand, the protective plate can be supported to prevent it from moving downward under the action of gravity; on the other hand, the protective plate can be guided so that it can move along a predetermined trajectory.

[0035] Furthermore, the lower part of the guide support groove is provided with a vertically extending baffle, and the connecting plate is provided with a clearance groove for the baffle to be inserted at the position corresponding to the baffle.

[0036] The beneficial effect is that the retaining edge extends into the clearance groove, and when the connecting plate wants to sway up and down, the retaining edge can stop the connecting plate, thereby preventing the connecting plate from swaying.

[0037] Furthermore, the driving device includes a guide rail, a slider that slides with the guide rail, a power source, a driving wheel, a driven wheel, and a conveyor belt or conveyor chain disposed between the driving wheel and the driven wheel. The guide rail and the slider constitute a guiding structure. The power source drives the driving wheel to rotate. The conveyor chain or conveyor belt is connected to the slider in a transmission manner. The slider is connected to the connecting plate in a transmission manner so that the slider drives the connecting plate to move.

[0038] The beneficial effects are as follows: the drive device can drive the drive wheel and the driven wheel to drive the conveyor belt or conveyor chain to move. The conveyor belt or conveyor chain can drive the slider to move, thereby causing the slider to drive the connecting plate to move, and then causing the connecting plate to drive the protective plate to open and close the placement port of the elevator.

[0039] Furthermore, the protective plate is a flexible chain plate.

[0040] The beneficial effects are as follows: by setting the protective plate as a flexible chain plate, in one case, the protective plate can be stacked on one side of the elevator when the elevator placement opening is opened, thereby reducing the space occupied by the protective plate; in another case, compared with the technical solution of the protective plate being a rigid plate, the flexible chain plate can be bent, thereby allowing the protective plate to be changed from a horizontal setting to a vertical setting, which is conducive to the protective plate hanging down along the side of the elevator and improving the space utilization rate.

[0041] Furthermore, the protective plate is a flexible chain plate, and the support plate is provided with an erection structure so that the protective plate has a horizontal part and a naturally hanging vertical part after being erected on the erection structure.

[0042] The beneficial effect is that the overlapping structure allows the protective panel to hang down naturally, improving space utilization.

[0043] Furthermore, the support plate is provided with perforations for the protective plate to pass through, and the sidewalls of the perforations form an erection structure.

[0044] The beneficial effect is that by setting the erection structure as perforated, the two side walls opposite the perforation can cooperate with the stop of the protective plate, thereby preventing the protective plate from shaking inside the perforation. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of the security inspection system of the present invention;

[0046] Figure 2 A schematic diagram of the elevator structure in a specific embodiment 1 of the security inspection system of the present invention, omitting the lifting platform;

[0047] Figure 3 This is a schematic diagram of the drive structure of a specific embodiment 1 of the security inspection system of the present invention;

[0048] Figure 4 This is a schematic diagram of the guide support groove in a specific embodiment 1 of the security inspection system of the present invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Inspection platform; 2. Luggage carrying container; 3. Elevator; 4. Protective device; 5. Lower roller conveyor line; 6. Drive motor; 7. Protective plate; 8. Guide support groove; 9. Light curtain sensor; 10. Horizontal plate; 11. Pulley; 12. Guide rail; 13. Connecting plate; 14. Conveyor belt; 15. Clearance groove; 16. Side guard; 17. Vertical plate; 18. Perforation. Detailed Implementation

[0051] The present invention will be further described in detail below with reference to the embodiments.

[0052] Specific embodiment 1 of the security inspection system provided by the present invention:

[0053] The purpose of this embodiment is to provide a security inspection system that can prevent luggage from falling into the lift and being damaged during baggage inspection. By setting up a detection mechanism to determine the position of the lifting platform, and then controlling the protective plate to open or close the placement opening of the lift through a drive structure, the luggage is prevented from being damaged.

[0054] like Figure 1As shown, this embodiment provides a security inspection system, including an inspection platform 1 for baggage inspection and a lift 3 disposed on one side of the inspection platform 1. The lift 3 includes a frame, a lifting platform disposed on the frame, and a protective device 4. The upper end of the frame is provided with a placement opening for placing luggage on the lifting platform. The lift includes a detection mechanism for detecting whether the lifting platform is near the placement opening, a protective plate 7, and a drive structure for driving the protective plate 7 to move. The protective plate 7 has a blocked position that completely blocks the placement opening and an open position that opens the placement opening during its movement stroke. The drive structure can control the protective plate to switch between the open position and the blocked position according to the detection data of the detection mechanism. The protective plate 7, the detection mechanism, and the drive structure together constitute the protective device 4.

[0055] In this embodiment, the detection mechanism is a light curtain sensor 9. However, in other embodiments, the detection mechanism can also be a visual sensor or a single laser sensor, as long as the detection mechanism can determine whether the lifting platform is located above the elevator 3. The specific implementation method, such as using an optical sensor and determining the position of the lifting platform based on whether the lifting platform blocks the light, using a visual sensor and determining the position of the lifting platform based on the information of the image obtained by the visual sensor, or using a distance sensor and determining the position of the lifting platform based on the distance from the lifting platform to the bottom or top of the elevator 3, is irrelevant.

[0056] In this invention, the "detection mechanism for detecting whether the lifting platform is located near the placement opening" refers to a detection mechanism capable of determining whether the highest point of the luggage and luggage container on the lifting platform is below the placement opening, thereby preventing the luggage from being trapped when the protective panel closes. Therefore, the detection in this invention is divided into two types: direct detection and indirect detection. Direct detection directly detects the position of the lifting platform to determine whether it is located near the placement opening, thereby determining whether the protective panel needs to be opened or closed. Indirect detection determines the position of the lifting platform by detecting the position of the luggage, determining whether it is located near the placement opening, thereby determining whether the protective panel needs to be opened or closed.

[0057] The inspection platform 1 allows for convenient baggage inspection. By placing the lift 3 on one side of the inspection platform 1, inspectors can easily place inspected baggage into the lift 3. When using this security inspection system, after the detection mechanism detects the lift platform moving away from the top of the lift 3, the drive structure controls the protective plate 7 to block the placement opening of the lift 3, preventing baggage from falling into the lift 3 and being damaged. When the detection mechanism detects the lift platform returning to the top of the lift 3, the drive structure controls the protective plate 7 to open the placement opening of the lift 3, facilitating the placement of items onto the lift platform. At this point, the distance between the lift platform and the placement opening of the lift 3 is short, ensuring that even if items fall into the lift 3, they will not be damaged. In summary, this embodiment effectively eliminates the risk of baggage being damaged after falling into the lift 3.

[0058] In this embodiment, as Figure 1-3 As shown, the protective plate 7 is a flexible chain plate. The driving structure includes a connecting plate 13, which is fixedly connected to one end of the protective plate 7 to drive the protective plate 7 to move. Specifically, the protective plate 7 has a through hole for the connecting plate to pass through, and the connecting plate 13 passes through the through hole and stops with the protective plate in a direction perpendicular to the connecting plate. The elevator also includes a support plate, which has a space corresponding to the upper and lower parts of the placement opening to avoid interference between the support plate and the lifting platform. The driving structure includes a connecting plate 13 mounted on the support plate for guiding movement and a driving device for controlling the reciprocating movement of the connecting plate 13. The connecting plate 13 is connected to the protective plate 7 to drive the protective plate 7 to move. The support plate has an erection structure so that the protective plate has a horizontal part and a naturally hanging vertical part after being erected on the erection structure. Specifically, the support plate has a through hole 18 for the protective plate to pass through, and the sidewall of the through hole 18 constitutes the erection structure.

[0059] By designing the protective plate 7 as a flexible chain plate, it can be stacked on one side of the elevator 3 when the placement opening of the elevator 3 is opened, thereby reducing the space occupied by the protective plate 7. Simultaneously, compared to a rigid plate design, the flexible chain plate allows the protective plate 7 to bend, enabling it to change from a horizontal to a vertical arrangement, facilitating its hanging along the side of the elevator 3 and improving space utilization. Compared to a design where the entire protective plate 7 is controlled to open and close the elevator 3 placement opening, the connecting plate 13 allows for convenient control of the opening and closing of the protective plate 7. By designing the erection structure as a perforation 18, the two opposite sidewalls of the perforation 18 can engage with the protective plate stop, preventing the protective plate from swaying within the perforation 18.

[0060] The support plate includes two parallel horizontal plates 10, and the space between the two horizontal plates forms a space corresponding to the placement opening above and below. A connecting plate 13 is disposed between the two horizontal plates 10 and perpendicular to the horizontal plates 10. At least one horizontal plate 10 has a guide rail 12 extending in a direction perpendicular to the connecting plate 13 on its upper surface. At least one end of the connecting plate 13 has a slider that can slide with the guide rail 12. The guide rail 12 constitutes a guide structure for guiding the connecting plate. The connecting plate spans between the two horizontal plates.

[0061] The driving device includes a guide rail, a slider that slides with the guide rail, a power source, a driving wheel, a driven wheel, and a conveyor belt or conveyor chain disposed between the driving wheel and the driven wheel. The guide rail and the slider constitute a guiding structure. The power source drives the driving wheel to rotate. The conveyor chain or conveyor belt is driven by the slider. The slider is driven by the connecting plate so that the slider drives the connecting plate to move. In this embodiment, the driving device includes pulleys 11 disposed on the horizontal plate 10 and a drive motor 6 for driving the pulleys 11 to rotate. The drive motor 6 constitutes a power source. The pulleys 11 are respectively disposed at both ends of each guide rail 12. A conveyor belt 14 parallel to the guide rail 12 is disposed between the pulleys 11 on the same horizontal plate 10. A portion of both ends of the connecting plate constitutes a slider (i.e., the slider is part of the connecting plate). The conveyor belt 14 is fixedly connected to the connecting plate 13. At least one of the pulleys 11 located on the same horizontal plate 10 is driven by the drive motor 6. The conveyor belt and the connecting plate can be fixedly connected by bolts or pins. In this embodiment, the two horizontal plates 10 are fixedly connected by the vertical plate 17. However, in other embodiments, the horizontal plates 10 can also be fixed to the frame of the elevator 3, or a part of the frame of the elevator 3 can directly form the horizontal plates 10. In this embodiment, both horizontal plates 10 are provided with guide rails 12, and the lower surface of the connecting plate 13 is provided with protrusions or grooves. The guide rails 12 are grooves or protrusions corresponding to the protrusions or grooves on the connecting plate. The connecting plate and the guide rails 12 stop each other to prevent the connecting plate from coming out of the guide rails 12.

[0062] The guide rail 12 guides the connecting plate 13, allowing both ends of the connecting plate 13 to move along the guide rail 12, thus facilitating the opening and closing of the elevator 3's placement opening by the connecting plate 13 and the protective plate 7. The drive motor 6 drives the pulley 11 to move the conveyor belt 14, which in turn moves the connecting plate 13, thereby opening and closing the elevator 3's placement opening by the protective plate 7.

[0063] In this embodiment, as Figure 1-4 As shown, guide support grooves 8 are respectively provided above the positions corresponding to the two horizontal plates on the frame. The openings of the two guide support grooves 8 are arranged opposite each other along the longitudinal direction. The two ends of the protective plate are respectively supported in the guide support grooves 8 and can slide along the guide support grooves 8. The lower part of the guide support groove 8 is provided with a vertically extending baffle 16, and the connecting plate is provided with a clearance groove 15 for the baffle to be inserted at the position corresponding to the baffle 16.

[0064] By setting the guide support groove 8, on the one hand, it can support the protective plate 7 and prevent the protective plate 7 from moving downward under the action of gravity; on the other hand, it can guide the protective plate 7 so that the protective plate 7 can move along a predetermined trajectory. The baffle extends into the clearance groove, and when the connecting plate wants to sway up and down, the baffle can stop the connecting plate, thereby preventing the connecting plate from swaying.

[0065] When using this security inspection system, firstly, staff open and inspect the luggage on inspection platform 1; then, staff place the luggage container 2 containing the luggage on the lifting platform, and the lifting platform begins to descend; once the light emitted by the light curtain sensor 9 is not blocked by the luggage, the lifting platform, or the luggage container, the drive structure drives the protective plate 7 to close the placement opening of the lifting machine 3. When the lifting platform reaches the bottom, it transports the luggage container 2 to the lower roller conveyor line 5 so that the luggage container 2 leaves the inspection platform 1; then, the lifting platform rises, and once the lifting platform blocks the light emitted by the light curtain sensor 9, the drive structure drives the protective plate 7 to open the placement opening of the lifting machine 3. The lifting platform is located at the top of the lifting machine 3 for staff to place new luggage containers 2 on the lifting platform.

[0066] Specific embodiment 2 of the security inspection system provided by the present invention:

[0067] The purpose of this embodiment is to provide a different protective plate. The main difference between this embodiment and specific embodiment 1 is that in this embodiment, the protective plate is a rigid plate, such as an iron plate or a plastic plate. The length of the horizontal plate is greater than the length of the elevator, and one end of the horizontal plate extends from one end of the elevator to form a suspension plate, thereby allowing the protective plate to slide along the horizontal plate to open and close the elevator's placement opening. In other embodiments, the protective plate can also be hinged to one end of the elevator, and the output shaft of the drive motor is connected to the protective plate to enable the protective plate to open and close the elevator's placement opening.

[0068] Specific embodiment 3 of the security inspection system provided by the present invention:

[0069] The purpose of this embodiment is to provide a drive structure that does not include a connecting plate. The main difference between this embodiment and specific embodiment 1 is that, in this embodiment, the elevator does not include a guide support groove and a connecting plate, and the conveyor belt is directly fixed to the protective plate by bolts. Of course, in other embodiments, a connecting plate may also be included, and the conveyor belt can be fixedly connected to the connecting plate even without a guide support groove.

[0070] Specific embodiment 4 of the security inspection system provided by the present invention:

[0071] The purpose of this embodiment is to provide a different driving device. The main difference between this embodiment and specific embodiment 1 is that: in this embodiment, the elevator does not include a support plate, the driving device includes a push cylinder installed on the elevator, the output end of the push cylinder is fixedly connected to the connecting plate, the push cylinder is horizontally installed and can drive the connecting plate to move horizontally so that the protective plate opens and closes the placement port of the elevator.

[0072] Specific embodiment 5 of the security inspection system provided by the present invention:

[0073] The purpose of this embodiment is to provide a different connecting plate. The main difference between this embodiment and specific embodiment 1 is that in this embodiment, the connecting plate does not span between the two horizontal plates. There are two connecting plates and the length of the connecting plates is relatively short. The two connecting plates are connected to different sliders and then connected to the protective plate.

[0074] Specific embodiment 6 of the security inspection system provided by the present invention:

[0075] The purpose of this embodiment is to provide another different connecting plate. The main difference between this embodiment and specific embodiment 1 is that: in this embodiment, the connecting plate is not provided with a relief groove, and the guide support groove is not provided with a retaining edge.

[0076] Specific embodiment 7 of the security inspection system provided by the present invention:

[0077] The purpose of this embodiment is to provide a frame that does not include guide support grooves. The main difference between this embodiment and specific embodiment 1 is that, in this embodiment, the frame does not include guide support grooves. The guide rails on the horizontal plate are dovetail-shaped, and the connecting plate is provided with protrusions corresponding to the dovetail grooves. The protrusions and dovetail grooves prevent the protective plate from falling off the frame.

[0078] Specific embodiment 8 of the security inspection system provided by the present invention:

[0079] The purpose of this embodiment is to provide a different erection structure. The main difference between this embodiment and specific embodiment 1 is that: in this embodiment, no perforations are provided on the support plate, and the protective plate is directly attached to the side of the longitudinal plate of the support plate.

[0080] Specific embodiment 1 of the elevator provided by the present invention:

[0081] The purpose of this embodiment is to provide an elevator that can prevent luggage from falling into the elevator and being damaged during baggage inspection. By setting up a detection mechanism to determine the position of the elevator platform, and then controlling the protective plate to open or close the elevator's placement opening through a drive structure, luggage can be prevented from being damaged.

[0082] The specific structure of the elevator in this embodiment is the same as that of any one of the elevators in the specific embodiments 1-8 of the security inspection system described above, and will not be described again here.

[0083] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lift for installation on one side of an inspection platform for baggage inspection, comprising a frame and a lifting platform mounted on the frame, wherein the upper end of the frame has a placement opening for placing luggage on the lifting platform, characterized in that, The elevator also includes a detection mechanism for detecting whether the lifting platform is near the placement opening, a protective plate, and a drive structure for moving the protective plate. The protective plate has a blocking position that completely blocks the placement opening and an open position that opens the placement opening during its movement stroke. The drive structure can control the protective plate to switch between the open and blocking positions based on the detection data from the detection mechanism. The detection mechanism can determine whether the highest point of the luggage and luggage carrying container on the lifting platform is below the placement opening, thereby preventing the luggage from being trapped when the protective plate closes. When the detection mechanism detects that the lifting platform has left the top of the elevator, the drive structure controls the protective plate to block the placement opening of the elevator, so that the protective plate is in the blocking position, thereby preventing the luggage from falling into the elevator and being damaged. When the inspection agency detects that the lifting platform has returned to the top of the elevator, the drive structure controls the protective plate to open the elevator's placement port, so that the protective plate is in the open position, making it easier to place items onto the lifting platform.

2. The elevator as described in claim 1, characterized in that, The elevator also includes a support plate, which has a space corresponding to the placement opening above and below to avoid interference between the support plate and the lifting platform. The drive structure includes a connecting plate that is guided and moved on the support plate and a drive device for controlling the reciprocating movement of the connecting plate. The connecting plate is connected to the protective plate to drive the protective plate to move.

3. The elevator as described in claim 2, characterized in that, The support plate includes two parallel horizontal plates, and the space between the two horizontal plates forms a space corresponding to the placement opening above and below. At least one horizontal plate is provided with a guide structure to guide the connecting plate, and the connecting plate spans between the two horizontal plates.

4. The elevator as described in claim 3, characterized in that, The frame is provided with guide support grooves above the positions corresponding to the two horizontal plates. The openings of the two guide support grooves are arranged opposite each other in the longitudinal direction. The two ends of the protective plate are supported in the guide support grooves and can slide along the guide support grooves.

5. The elevator as described in claim 4, characterized in that, The lower part of the guide support groove is provided with a vertically extending baffle, and the connecting plate is provided with a clearance groove for the baffle to be inserted at the position corresponding to the baffle.

6. The elevator as described in any one of claims 3-5, characterized in that, The driving device includes a guide rail, a slider that slides with the guide rail, a power source, a driving wheel, a driven wheel, and a conveyor belt or conveyor chain disposed between the driving wheel and the driven wheel. The guide rail and the slider form a guiding structure. The power source drives the driving wheel to rotate. The conveyor chain or conveyor belt is connected to the slider in a transmission manner. The slider is connected to the connecting plate in a transmission manner so that the slider drives the connecting plate to move.

7. The elevator as described in claim 1, characterized in that, The protective plate is a flexible chain plate.

8. The elevator as described in claims 2-5, characterized in that, The protective plate is a flexible chain plate, and the support plate is provided with an erection structure so that the protective plate has a horizontal part and a naturally hanging vertical part after being erected on the erection structure.

9. The elevator as described in claim 8, characterized in that, The support plate has perforations for the protective plate to pass through, and the sidewalls of the perforations form the erection structure.

10. A security inspection system, comprising an inspection platform for bag inspection and a lift disposed on one side of the inspection platform, characterized in that, The elevator is the elevator described in any one of claims 1-9.

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