Sampling detection mechanism

Abstract

The utility model provides a sampling detection mechanism. Comprising a gate machine, a sampling port arranged on the gate machine and used for placing a to-be-detected object, a detection sensor for detecting whether the to-be-detected object at the sampling port is in place, a detection device, a first rotating roll and a second rotating roll, wherein the first rotating roll and the second rotating roll are respectively and rotatably arranged in the gate machine and close to the detection device; two ends of the sampling paper are wound on the first rotating roll and the second rotating roll, and the sampling paper passes through the sampling port and the detection device; the first rotating roll is driven by a first driving mechanism arranged in the gate to rotate forwards and backwards; a buffer wheel is arranged in the gate machine in a sliding manner, the sampling paper sequentially passes through the sampling port, the buffer wheel and the second rotating roll, the buffer wheel and the sampling paper form a movable pulley mechanism, and when the sampling paper is rolled by the first rotating roll, the sampling paper drives the buffer wheel to move; when the sampling paper is placed by the first rotating roll, the buffer wheel reversely resets and moves under the action of restoring force.

Description

Technical Field

[0001] The utility model belongs to the field of detection, and in particular relates to a sampling detection mechanism. Background Art

[0002] Currently, domestic passengers entering airports are required to undergo a solid trace explosive sampling inspection to determine whether they are carrying solid explosives. The commonly used method involves airport security personnel using a single sampling strip to wipe the clothing or bags of multiple passengers. The strip is then placed in a solid trace explosive detection device for testing. If the test results are normal, all passengers are released. If the test results are abnormal, each passenger is tested again to identify the suspect. During the testing process, since a single sampling strip must be used to wipe multiple passengers before being placed in the solid trace explosive detection device, this results in long wait times, a poor inspection experience, and the inability to quickly identify a specific individual. Patent CN206235468U discloses a sampling and testing device that includes a wiping sampling device, card reader, and gate equipment. However, the patent only uses a single roll of sampling strips, requiring complete replacement once explosives are detected. Patent CN221466048U discloses a gate device for rapid detection of trace explosives. However, the above device still has certain problems. The sampling and setting-out rolls only have one active roll, meaning the sampling paper roll can only move in one direction. After wiping, the same section of sampling paper can only move forward to the testing position and then rewind. After detecting no explosives, it cannot be returned to its original position for reuse. Furthermore, the wiping and testing positions are located a certain distance apart. After a test, any unused test paper within this distance cannot be reused, resulting in waste. Summary of the Invention

[0003] The utility model provides a sampling detection mechanism.

[0004] The purpose of the utility model is achieved in the following way: a sampling detection mechanism includes a gate, a sampling port for placing an object to be detected arranged on the gate, a detection sensor for detecting whether the object to be detected is in place at the sampling port, a detection device arranged in the gate, a first rotating roll and a second rotating roll close to the detection device and rotating in the gate respectively, and sampling paper with both ends wound around the first rotating roll and the second rotating roll and passing through the sampling port and the detection device; the first rotating roll is driven forward and reverse by a first driving mechanism arranged in the gate; a buffer wheel is slidingly arranged in the gate, and the sampling paper passes through the sampling port, the buffer wheel and the second rotating roll in sequence, the buffer wheel and the sampling paper constitute a movable pulley mechanism, when the first rotating roll rewinds the sampling paper, the sampling paper drives the buffer wheel to move; when the first rotating roll lays out the sampling paper, the buffer wheel moves in the reverse direction under the action of the restoring force.

[0005] A vertical or inclined buffer guide rail is provided in the gate, and the buffer wheel is slidably provided on the guide rail; or a vertical or inclined buffer groove is provided in the gate, and the buffer wheel is slidably provided in the buffer groove.

[0006] The buffer guide rail is a linear guide rail, and a first guide wheel and a second guide wheel are respectively provided on both sides above the buffer guide rail. The first guide wheel and the second guide wheel ensure that the sampling paper passing through both sides of the buffer wheel is parallel to the moving direction of the buffer wheel; a position sensor for detecting the position of the buffer wheel on the buffer guide rail is provided below the buffer guide rail.

[0007] The buffer groove is a linear groove; a first guide wheel and a second guide wheel are respectively provided on both sides above the buffer groove; the first guide wheel and the second guide wheel ensure that the sampling paper passing through both sides of the buffer wheel is parallel to the moving direction of the buffer wheel; a position sensor for detecting the position of the buffer wheel in the buffer groove is provided below the buffer guide rail or the buffer groove.

[0008] A wiping module is provided in the gate, which is driven by a linear drive mechanism to move linearly; the sampling paper passes around the surface of the wiping module; the wiping module drives the sampling paper to press or move away from the part to be detected at the sampling port, and the detection sensor is located above or below the sampling port in the gate.

[0009] The wiping module includes a mounting frame fixedly arranged in the gate, a motor is fixedly arranged on the mounting frame, the output shaft of the motor serves as a screw or a coaxially connected screw, a pressing piece is provided on the screw as a nut that cooperates with the screw, a wiping piece that can slide close to or away from the pressing piece is provided below the pressing piece, and the sampling paper bypasses the wiping piece; an elastic buffer is provided between the pressing piece and the wiping piece.

[0010] A wiping module is provided in the gate and is driven by a linear drive mechanism to move linearly; the sampling paper passes around the surface of the wiping module; the wiping module drives the sampling paper to press or move away from the part to be tested at the sampling port; the second guide wheel and the third guide wheel are respectively provided on both sides of the wiping module.

[0011] The detection device is provided with a fourth guide wheel and a fifth guide wheel on both sides to ensure that the sampling paper passes through the detection device, and the sampling paper bypasses the fourth guide wheel and the fifth guide wheel.

[0012] The second rotating roll is driven to rotate by a second driving mechanism arranged in the gate.

[0013] Compared with existing technologies, this mechanism is integrated into the gate of airports or other places, and can simultaneously perform explosion-proof testing and other necessary tests on passengers while they are being inspected. This utility model has a simple structure and the sampling paper can be used multiple times, and it only needs to be replaced after a long time, which can save manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the initial position of the utility model.

[0015] Figure 2 It is a schematic diagram of the wiping module of the utility model being pressed down.

[0016] Figure 3 It is a schematic diagram of the position of the utility model when performing detection.

[0017] Figure 4 This is a schematic diagram of the utility model when a new paper tape sampling position is replaced after a certain number of detections or explosives are detected.

[0018] Figure 5 This is a schematic diagram of the wiping module of the present invention in a non-pressed state.

[0019] Figure 6 yes Figure 5 Schematic diagram of the downward pressure state (the wiper moves upward according to the thickness of the document).

[0020] Among them, 1 is the first rotating roll, 2 is the fifth guide wheel, 3 is the sampling paper, 4 is the detection device, 5 is the fourth guide wheel, 6 is the second guide wheel, 7 is the detection sensor, 8 is the third guide wheel, 9 is the wiping mechanism, 90 is the motor, 91 is the pressing part, 92 is the wiping part, 93 is the connecting rod, 94 is the elastic buffer part, 95 is the mounting frame, 10 is the first guide wheel, 11 is the part to be detected, 12 is the second rotating roll, 13 is the buffer wheel, 14 is the buffer guide rail, and 15 is the position sensor. DETAILED DESCRIPTION

[0021] In this utility model, unless otherwise specified or limited, the technical terms used herein shall have the ordinary meanings understood by persons skilled in the art to which this utility model relates. Terms such as "connected," "connected," "fixed," and "disposed" should be interpreted broadly and may refer to fixed, removable, or integral connections; direct or indirect connections through an intermediary; and mechanical or electrical connections. Unless otherwise specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact through an intermediary. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. Relational terms such as first and second are used solely to distinguish one entity or operation from another and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms used in the description, such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc., to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0022] The following will combine the accompanying drawings and specific embodiments to clearly and completely describe the technical solution of the present invention. Figure 1-6As shown, a sampling detection mechanism includes a gate, a sampling port for placing an object to be detected on the gate, a detection sensor 7 for detecting whether the object to be detected is in place at the sampling port, a detection device 4 arranged in the gate, a first rotating roll 1 and a second rotating roll 12 near the sampling port arranged in the gate, respectively rotating, and a sampling paper 3 with both ends wound around the first rotating roll 1 and the second rotating roll 12 and passing through the sampling port and the detection device 4; the first rotating roll 1 is driven to rotate forward and reverse by a first driving mechanism arranged in the gate; a buffer wheel 13 is slidingly arranged in the gate, and the sampling paper 3 passes through the sampling port, the buffer wheel 13 and the second rotating roll 12 in sequence, and the buffer wheel 13 and the sampling paper 3 constitute a movable pulley mechanism, when the first rotating roll 1 rewinds the sampling paper 3, the sampling paper 3 drives the buffer wheel 13 to move; when the first rotating roll 1 lays out the sampling paper 3, the buffer wheel 13 resets in the reverse direction under the action of the restoring force. The sampling port in this utility model can be an externally exposed structure similar to that in CN221466048U, or an insertable card slot similar to that in CN206235468U. The sampling paper 3 passing through the sampling port can be located directly above or below the sampling port, as in CN221466048U, allowing access to the document placed in the port. Alternatively, it can be located adjacent to the port, with a push mechanism bringing the sample paper into contact with the document to be tested. The detection sensor 7 can be located inside the gate or above it. The sampling paper 3 sequentially passes through the sampling port, the buffer wheel 13, and the second rotating reel 12, meaning that the buffer wheel 13 is located between the sampling port's second rotating member within the sampling paper 3's travel range. The buffer wheel 13 is not necessarily the only element between the sampling port and the second rotating member. The buffer wheel 13 is slidably connected to the gate, and its movement trajectory can be configured as needed, either a straight line or a smooth curve. Reverse reset movement can return to the original position, but depending on the reeling condition of the sampling paper 3, this may not necessarily occur. The restoring force can be selected as needed and can be a spring's restoring force, gravity, or other common restoring forces, all of which are within the scope of protection of this utility model. A reciprocating buffer wheel 13 is provided in this utility model. The buffer wheel 13 moves along with the sample paper 3, and the distance the sample paper 3 moves is a multiple of the distance the buffer wheel 13 moves. A first rotating member rewinds and rotates, moving the sample paper 3 from the sampling port to the detection device 4. If no explosives are detected, the first rotating member reverses and releases the sample paper 3, which is then reset and tensioned by the buffer wheel 13. To replace the sample paper 3 passing through the sampling port, the first rotating member rotates again to release another section of sample paper 3, and the buffer wheel 13 moves a short distance, causing the position of the sample paper 3 passing through the sampling port to change. This mechanism can be integrated into a checkpoint at an airport or other location, allowing simultaneous explosion-proof testing and other necessary tests to be performed on passengers as they pass through the checkpoint. This utility model has a simple structure, and the sample paper 3 can be used multiple times, requiring only a short replacement interval, saving both manpower and material resources.

[0023] A vertical or inclined buffer guide rail 14 is provided in the gate, and the buffer wheel 13 is slidably provided on the guide rail; or a vertical or inclined buffer groove is provided in the gate, and the buffer wheel 13 is slidably provided in the buffer groove. The buffer wheel 13 slides freely on the buffer guide rail 14 or in the buffer groove, and relies on the weight of the buffer wheel 13 to keep the sampling paper 3 in a tensioned state. In a vertical buffer rail or buffer groove, the tensioning force is constant to the weight of the buffer wheel 13. Preferably, the buffer rail is set vertically and is a linear guide rail. Of course, the effect of the present invention can also be achieved by using an inclined linear guide rail or a smooth curve guide rail. Limiting members can be provided at the upper and lower ends of the buffer guide rail 14 to prevent the buffer wheel 13 from detaching from the buffer guide rail 14. If the buffer guide rail 14 is set horizontally or nearly horizontally, a reset spring needs to be provided to provide a reset force. As for setting either the buffer rail or the buffer groove, it can be coordinated with the buffer wheel 13, and other coordination methods are also acceptable.

[0024] The buffer guide rail 14 is a linear guide rail. A first guide wheel 10 and a second guide wheel 6 are respectively disposed on either side of the buffer guide rail 14. These first guide wheels 10 and second guide wheels 6 ensure that the sampling paper 3 passing on either side of the buffer wheel 13 is parallel to the direction of movement of the buffer wheel 13. A position sensor 15 is disposed below the buffer guide rail 14 to detect the position of the buffer wheel 13 on the buffer guide rail 14. The position sensor 15 primarily measures the position of the buffer wheel 13 on the buffer guide rail 14. When the sampling paper 3 passing on either side of the buffer wheel 13 is parallel to the direction of movement of the buffer wheel 13, the distance traveled by the sampling paper 3 is twice that of the buffer wheel 13, facilitating calculation.

[0025] The buffer groove is a linear groove; a first guide wheel 10 and a second guide wheel 6 are respectively provided on both sides above the buffer groove; the first guide wheel 10 and the second guide wheel 6 ensure that the sampling paper 3 passing through both sides of the buffer wheel 13 is parallel to the moving direction of the buffer wheel 13; a position sensor 15 for detecting the position of the buffer wheel 13 in the buffer groove is provided below the buffer guide rail 14 or the buffer groove.

[0026] A wiping module is provided in the gate, which is driven by a linear drive mechanism to move linearly; the sampling paper 3 passes around the surface of the wiping module; the wiping module drives the sampling paper 3 to press or move away from the part to be detected 11 at the sampling port, and the detection sensor 7 is located above or below the sampling port in the gate.

[0027] The wiping module includes a mounting frame 95 fixedly arranged in the gate, a motor 90 is fixedly arranged on the mounting frame 95, the output shaft of the motor 90 serves as a screw or a coaxially connected screw, a pressing member 91 is provided on the screw as a nut cooperating with the screw, a wiping member 92 is provided below the pressing member 91 and can slide close to or away from the pressing member 91, and the sampling paper 3 bypasses the wiping member 92; an elastic buffer 94 is provided between the pressing member 91 and the wiping member 92. The sampling paper 3 below the wiping member 92 can directly press down to contact the part to be detected 11, or the first rotating member can also rotate a little to drive the sampling paper 3 to move and wipe the part to be detected 11. In the specific structure, a connecting rod 93 is provided between the pressing member 91 and the wiping member 92, and an elastic buffer 94 is provided outside the connecting rod 93 between the pressing member 91 and the wiping member 92, wherein the elastic buffer 94 can be a compression spring. The lower end of the connecting rod 93 is fixed to the wiping member 92, and a stepped hole is provided on the pressing member 91 corresponding to the connecting rod 93. The upper end of the connecting rod 93 is provided on or passes through the stepped hole on the pressing member 91. The end of the upper end of the connecting rod 93 is larger than the minimum diameter of the stepped hole to ensure that the connecting rod 93 slides in the stepped hole and does not detach from the stepped hole. The thickness of the part to be detected 11 may change. By providing a wiper 92 that can move elastically, it can effectively adapt to a variety of detection parts with different thicknesses. Of course, other linear drive mechanisms can also be used, such as a mechanism in which a linear motor 90 directly drives the pressing member 91 to move. In addition, the sampling port preferably adopts a plug-in structure, and the wiping module wipes the part to be detected 11 that is inserted into the plug-in port inside the gate. The wiping structure can press down from the top to approach the part to be detected 11 or press up from the bottom to approach the part to be detected 11.

[0028] A wiping module is provided in the gate, which is driven by a linear drive mechanism to move linearly; the sampling paper 3 passes around the surface of the wiping module; the wiping module drives the sampling paper 3 to press or move away from the part to be detected 11 at the sampling port; the second guide wheel 6 and the third guide wheel 8 are respectively provided on both sides of the wiping module.

[0029] The detection device 4 is flanked by fourth and fifth guide wheels 5 and 2, respectively, to ensure that the sampling paper 3 passes through the detection device 4. The sampling paper 3 then passes around the fourth and fifth guide wheels 5 and 2. The detection device 4 can be configured as needed and may be a solid trace explosive detection unit that uses fluorescence quenching technology to detect the presence of solid trace explosives on the sampling tape. The detection device 4 is conventional technology and will not be described in detail.

[0030] The second rotating roll 12 is driven to rotate by the second driving mechanism arranged in the gate. Both the second driving mechanism and the first driving mechanism can be a motor 90. One of the first rotating roll 1 and the second rotating roll 12 can be used as a sample roll, and the other as a sample collection roll. After a period of use, the sampling paper 3 of the sampling port constantly changes its position, and the upper and lower positions of the buffer wheel 13 constantly change. After the buffer wheel 13 reaches the limit position, the sampling paper 3 will not be tensioned or cannot be pulled. At this time, the second rotating roll 12 rotates forward or backward, and releases a section of the sampling paper 3 or rewinds a section of the sampling paper 3 as needed, so that the buffer wheel 13 can stay in the appropriate position. All electrical components, the first driving mechanism, the second driving mechanism, the detection sensor 7, and the position sensor 15 of the utility model are electrically connected to the controller and automatically controlled by the controller.

[0031] In the drawings of the present invention, the working process of the sampling and detection mechanism is explained by taking the first rotating roll 1 as the sample placing roll and the second rotating roll 12 as the sample receiving roll as an example. The first rotating roll 1 is arranged on the left side of the gate, on which 3 rolls of new sampling paper are arranged; the second rotating roll 12 is arranged on the right side of the gate, on which 3 rolls of sampled paper are arranged. A detection device 4 is arranged above the first rotating roll 1, and an insertable sampling port is arranged above the second rotating roll. A wiping mechanism 9 and a detection sensor 7 are arranged above the sampling port. A vertical buffer guide rail 14 is arranged between the first rotating roll 1 and the second rotating roll 12, and a buffer wheel 13 is arranged on the buffer guide rail 14, and a position sensor 15 is arranged at a position flush with the lower end of the buffer guide rail 14. The detection steps are as follows: 1. The solid trace explosive detection device 4 is powered on for self-test to confirm that the wiping module is in the raised state and the buffer wheel 13 is located at the initial default position below the buffer guide rail 14, as shown Figure 1 2. The passenger inserts the ID card. 3. The detection sensor 7 detects that the ID card and other documents have been inserted into place, and the detection sensor 7 sends a signal to the controller, which controls the wiping module to press down, so that the sampling paper 3 contacts the ID card, as shown. Figure 2 . 4. After the wiping module is pressed down and contacts the ID card or the first rotating roll 1 rotates a little angle to wipe, the wiping module is lifted, and the sampling paper 3 is out of contact with the ID card; 5. The 3 used sampling papers on the second rotating roll 12 remain stationary, and the 3 new sampling papers on the first rotating roll 1 rotate counterclockwise, driving the sampling paper 3 to move, so that the sampling paper 3 moves from the sampling position to the detection position of the solid trace explosive detection unit for detection. The moving distance is accurately measured by the position sensor 15. According to the principle of the movable pulley, the moving distance is twice the change value of the position sensor 15. Figure 3 6. After the solid trace explosive detection unit has finished testing, the new sampling paper 3 rolls, that is, the first rotating roll 1, rotates clockwise to start unwinding, while the second rotating roll 12 remains in motion, and the sampling paper 3 returns to the position before testing. Figure 17. Repeat steps 1-5 for a certain number of times or until trace explosives are detected, causing the solid trace explosive detection unit to alarm; 8. The first rotating roll 1 drives the new sampling paper 3 rolls to rotate clockwise and continue to unwind a certain length, such as Figure 4 During the unwinding process, if the buffer wheel 13 is too low in the buffer guide rail 14, the second rotating roll 12 drives the three used sampling paper rolls to rotate clockwise, causing the buffer wheel 13 to lift up to the initial default position; 9. Continue to repeat steps 1-8 until the three new sampling paper rolls are consumed; 10. The passenger takes away his / her ID card. If the test result is normal, the gate of the gate is opened and the passenger passes through the gate. If the test result is abnormal, the staff will conduct further testing on the passenger.

[0032] The technical features of the above-described embodiments may be combined in any manner, and as long as there are no contradictions in the combination of these technical features, they shall be deemed to be within the scope of this specification. Without departing from the overall concept of the present invention, the technical solutions of the present invention, their equivalent replacements or modifications, and certain changes and improvements made thereto shall also be deemed to be within the scope of protection of the present invention.

Claims

1. A sampling and detection mechanism, comprising a gate, a sampling port provided on the gate for placing an object to be detected, a detection sensor for detecting whether the object to be detected is in place at the sampling port, a detection device provided within the gate, a first rotating reel and a second rotating reel rotatably provided within the gate near the detection device and near the sampling port, respectively, and a sampling paper having two ends wound around the first and second rotating reels and passing through the sampling port and the detection device; characterized in that: The first rotating roll is driven forward and reversely by a first driving mechanism arranged in the gate; a buffer wheel is slidably arranged in the gate, and the sampling paper passes through the sampling port, the buffer wheel and the second rotating roll in sequence. The buffer wheel and the sampling paper form a movable pulley mechanism. When the first rotating roll rewinds the sampling paper, the sampling paper drives the buffer wheel to move; When the first rotating roll lays out the sampling paper, the buffer wheel moves in the reverse direction under the action of the restoring force.

2. A sampling and detection mechanism according to claim 1, characterized in that: A vertical or inclined buffer guide rail is provided in the gate, and the buffer wheel is slidably provided on the guide rail; or a vertical or inclined buffer groove is provided in the gate, and the buffer wheel is slidably provided in the buffer groove.

3. The sampling and detection mechanism according to claim 2, characterized in that: The buffer guide rail is a linear guide rail, and a first guide wheel and a second guide wheel are respectively provided on both sides above the buffer guide rail. The first guide wheel and the second guide wheel ensure that the sampling paper passing through both sides of the buffer wheel is parallel to the moving direction of the buffer wheel; a position sensor for detecting the position of the buffer wheel on the buffer guide rail is provided below the buffer guide rail.

4. The sampling and detection mechanism according to claim 2, characterized in that: The buffer groove is a linear groove; a first guide wheel and a second guide wheel are respectively provided on both sides above the buffer groove; the first guide wheel and the second guide wheel ensure that the sampling paper passing through both sides of the buffer wheel is parallel to the moving direction of the buffer wheel; a position sensor for detecting the position of the buffer wheel in the buffer groove is provided below the buffer guide rail or the buffer groove.

5. The sampling and detection mechanism according to claim 1, characterized in that: A wiping module is provided in the gate, which is driven by a linear drive mechanism to move linearly; the sampling paper passes around the surface of the wiping module; the wiping module drives the sampling paper to press or move away from the part to be detected at the sampling port, and the detection sensor is located above or below the sampling port in the gate.

6. The sampling and detection mechanism according to claim 5, characterized in that: The wiping module includes a mounting frame fixedly arranged in the gate, a motor is fixedly arranged on the mounting frame, the output shaft of the motor serves as a screw or a coaxially connected screw, a pressing piece is provided on the screw as a nut that cooperates with the screw, a wiping piece that can slide close to or away from the pressing piece is provided below the pressing piece, and the sampling paper bypasses the wiping piece; an elastic buffer is provided between the pressing piece and the wiping piece.

7. A sampling and detection mechanism according to claim 3 or 4, characterized in that: A wiping module is provided in the gate and is driven by a linear drive mechanism to move linearly; the sampling paper passes around the surface of the wiping module; the wiping module drives the sampling paper to press or move away from the part to be tested at the sampling port; the second guide wheel and the third guide wheel are respectively provided on both sides of the wiping module.

8. The sampling and detection mechanism according to claim 1, characterized in that: The fourth guide wheel and the fifth guide wheel are respectively provided on both sides of the detection device to ensure that the sampling paper passes through the detection device, and the sampling paper bypasses the fourth guide wheel and the fifth guide wheel.

9. The sampling and detection mechanism according to claim 1, characterized in that: The second rotating roll is driven to rotate by a second driving mechanism arranged in the gate.

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