Millimeter wave detection device

Abstract

The invention belongs to the technical field of security inspection equipment, and discloses millimeter wave detection equipment. The millimeter wave detection equipment comprises a first detection unit, a second detection unit, a driving unit and a traction rope, the first detection unit comprises a first support and a first detector, and the first detector is movably arranged on the first support; the second detection unit comprises a second support and a second detector, and the second detector is movably arranged on the second support; the driving unit comprises a first driving assembly and a second driving assembly, the first driving assembly drives the first detector to move, and the second driving assembly is configured to drive the second detector to synchronously move in the direction opposite to the first detector; one end of the traction rope is connected to the first detector, and the other end bypasses the top ends of the first bracket and / or the second bracket and is connected to the second detector; the millimeter wave detection equipment is convenient to disassemble and assemble, can effectively prevent collision damage caused by faults, and is high in practicability.

Description

Technical Field

[0001] This invention relates to the field of security inspection equipment technology, and in particular to a millimeter-wave detection device. Background Technology

[0002] Millimeter waves are electromagnetic waves with frequencies between 30-300 GHz and wavelengths between 1-10 mm. They can effectively penetrate everyday clothing fabrics such as cotton, linen, and synthetic fibers. Millimeter waves can also be reflected by the human body. Millimeter wave receivers generate three-dimensional images by receiving the reflected millimeter wave signals, which can identify contraband hidden on the human body. Therefore, millimeter wave detectors are widely used as security inspection equipment in public places.

[0003] Existing millimeter-wave security inspection equipment basically consists of three main parts: a front detection unit, a rear detection unit, and a top drive unit. These three parts need to be assembled during use, and disassembled for transportation when the equipment needs to be moved. Due to the complex structure of existing millimeter-wave security inspection equipment, especially the top drive unit, whose internal transmission components are connected to the detector frames of both the front and rear detection units, the disassembly and assembly of the equipment are greatly increased, causing significant inconvenience for transportation. In addition, when the top drive unit is damaged, the detector frames in the front and rear detection units often fall due to loss of driving force, resulting in impact damage to the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a millimeter-wave detection device that is easy to assemble and disassemble, can effectively prevent damage from impacts caused by malfunctions, and is highly practical.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Millimeter-wave detection equipment, including:

[0007] The first detection unit includes a first support and a first detector. The first detector is movably mounted on the first support along the height direction and is capable of emitting and receiving millimeter waves.

[0008] The second detection unit is disposed at an interval from the first detection unit. The second detection unit includes a second bracket and a second detector. The second detector is movably disposed on the second bracket along the height direction. The second detector is capable of transmitting and receiving millimeter waves.

[0009] The driving unit includes a first driving component and a second driving component. The first driving component is disposed on the first bracket and drives the first detector to move. The second driving component is disposed on the second bracket and is configured to drive the second detector to move synchronously in the opposite direction to the first detector.

[0010] A traction rope, one end of which is detachably connected to the first detector, and the other end of which is detachably connected to the second detector after passing over the top of the first bracket and / or the second bracket, and the traction rope is naturally straight.

[0011] Preferably, the first drive assembly includes a drive motor and a first synchronous belt. The drive motor is connected to the first bracket, and the two ends of the first synchronous belt are respectively wound around the output shaft of the drive motor and the first bracket. The first detector is connected to the first synchronous belt. The second drive assembly includes a driven wheel shaft and a second synchronous belt. The driven wheel shaft is disposed on the second bracket, and the two ends of the second synchronous belt are respectively wound around the driven wheel shaft and the second bracket. The second detector is connected to the second synchronous belt.

[0012] The millimeter-wave detection device also includes a linkage component, and the output shaft of the drive motor is connected to the driven wheel shaft through the linkage component.

[0013] Preferably, the linkage component includes a transmission timing belt, one end of which is wound around the output shaft of the drive motor, and the other end of which is wound around the driven wheel shaft.

[0014] Preferably, the linkage assembly further includes a tensioning mechanism, which includes a wheel frame and a tensioning wheel. The tensioning wheel is rotatably mounted on the wheel frame and is disposed against the transmission timing belt. The wheel frame is connected to the first bracket and / or the second bracket, and the wheel frame can move closer to or further away from the tensioning wheel.

[0015] Preferably, the first detector is movable between a first upper limit and a first lower limit on the first bracket. A first proximity switch and a second proximity switch are respectively provided on the first bracket corresponding to the first upper limit and the first lower limit. The first proximity switch and the second proximity switch are respectively used to detect the first detector. The first proximity switch and the second proximity switch are respectively electrically connected to the drive motor.

[0016] Preferably, the second detector is movable on the second bracket between a second upper limit position and a second lower limit position, and when the first detector moves to the first upper limit position, the second detector moves to the second lower limit position, and when the first detector moves to the second upper limit position, the second detector moves to the second upper limit position.

[0017] The second bracket is provided with a third proximity switch and a fourth proximity switch corresponding to the second upper limit and the second lower limit, respectively. The third proximity switch and the fourth proximity switch are used to detect the second detector, and both the third proximity switch and the fourth proximity switch can send electrical signals.

[0018] Preferably, the first bracket is provided with a first slide rail extending along the height direction, a first slider is slidably disposed on the first slide rail, the first detector is fixedly connected to the first slider, and the first drive assembly is connected to the first slider.

[0019] The second bracket is provided with a second slide rail extending along the height direction, a second slider is slidably disposed on the second slide rail, the second detector is fixedly connected to the second slider, and the second drive assembly is connected to the second slider.

[0020] Preferably, the millimeter-wave detection device further includes a stop pin, and both the first slider and the second slider are provided with insertion holes that match the stop pin, and both the first bracket and the second bracket are provided with limiting holes for the insertion of the stop pin.

[0021] Preferably, the millimeter-wave detection device further includes a top cover, one end of which is placed on the top of the first support, and the other end of which is placed on the top of the second support.

[0022] Preferably, the millimeter-wave detection device further includes a connecting base, one end of which is detachably connected to the bottom of the first support, and the other end of which is detachably connected to the bottom of the second support.

[0023] The beneficial effects of this invention are as follows:

[0024] The millimeter-wave detection device provided by this invention includes a first detection unit, a second detection unit, a drive unit, and a traction rope. The first and second detection units are spaced apart. Since the first drive assembly can drive the first detector to move along the height direction on the first support, and the second drive assembly can drive the second detector to move along the height direction on the second support, the first and second detectors cooperate to simultaneously emit millimeter waves to the front and back of a person for security checks. A naturally straight traction rope connects the first and second detectors, and the traction rope passes around the top of the first and / or second support. Since the second drive assembly drives the second detector to move synchronously in the opposite direction to the first detector, the traction rope can remain naturally straight between the first and second detectors. Therefore, when the first drive assembly drives the first detector to rise, the traction rope can simultaneously transmit the second detector's... The traction rope reduces the workload of the first drive assembly by transmitting the tension when the detector descends. Conversely, when the second drive assembly drives the second detector to rise, the traction rope transmits the tension when the first detector descends, thus reducing the workload of the second drive assembly. Simultaneously, if either the first or second drive assembly malfunctions, causing one detector to fail to descend stably, the traction rope acts as a counterweight, cushioning the detector's fall and significantly reducing damage to the millimeter-wave detection equipment. Furthermore, the first and second detection units, the first drive assembly, and the second drive assembly of this millimeter-wave detection equipment are all independently configured, and the two ends of the traction rope are detachably connected to the first and second detectors, respectively. Therefore, disassembly and assembly do not require laborious separation or reassembly of the two detection units, greatly reducing the difficulty and efficiency of disassembly and assembly, and facilitating assembly and transportation. Attached Figure Description

[0025] Figure 1 This is a first-view structural schematic diagram of the millimeter-wave detection device provided in a specific embodiment of the present invention;

[0026] Figure 2 This is a second-view structural schematic diagram of the millimeter-wave detection device provided in a specific embodiment of the present invention;

[0027] Figure 3 This is a first-view structural schematic diagram of the traction rope and drive unit provided in a specific embodiment of the present invention;

[0028] Figure 4 This is a second-view structural schematic diagram of the traction rope and drive unit provided in a specific embodiment of the present invention;

[0029] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0030] Figure 6This is a third-view structural diagram of the traction rope and drive unit provided in a specific embodiment of the present invention.

[0031] In the picture:

[0032] 1-First detection unit; 11-First bracket; 111-First slide rail; 112-First slider; 12-First detector;

[0033] 2-Second detection unit; 21-Second bracket; 211-Second slide rail; 212-Second slider; 22-Second detector;

[0034] 3-Drive unit; 31-First drive assembly; 311-Drive motor; 312-First synchronous belt; 32-Second drive assembly; 321-Driven pulley axle; 322-Second synchronous belt; 33-Linkage assembly; 331-Transmission synchronous belt; 332-Tensioning mechanism; 3321-Pulley frame; 3322-Tensioning pulley;

[0035] 4-Tether rope;

[0036] 5-Base frame. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0041] like Figures 1 to 3 As shown, the present invention provides a millimeter-wave detection device, which includes a first detection unit 1, a second detection unit 2, a driving unit 3, and a traction rope 4. It includes a first support 11 and a first detector 12, the first detector 12 being movably mounted on the first support 11 along the height direction, and the first detector 12 being capable of emitting and receiving millimeter waves. The second detection unit 2 is spaced apart from and opposite to the first detection unit 1. The second detection unit 2 includes a second support 21 and a second detector 22, and the second detector 22 is movably mounted on the second support 21 along the height direction. Device 22 is capable of transmitting and receiving millimeter waves; drive unit 3 includes a first drive component 31 and a second drive component 32. The first drive component 31 is disposed on the first bracket 11 and drives the first detector 12 to move. The second drive component 32 is disposed on the second bracket 21 and is configured to drive the second detector 22 to move synchronously in the opposite direction to the first detector 12. One end of the traction rope 4 is connected to the first detector 12, and the other end passes around the top of the first bracket 11 and / or the second bracket 21 and is connected to the second detector 22. The traction rope 4 is naturally straightened.

[0042] Specifically, since the first support 11 is positioned relative to the second support 21, and the first drive assembly 31 can drive the first detector 12 to move along the height direction on the first support 11, and the second drive assembly 32 can drive the second detector 22 to move along the height direction on the second support 21, the first detector 12 and the second detector 22 cooperate to simultaneously emit millimeter waves to the front and back of the human body for security checks; a naturally straight traction rope 4 is connected between the first detector 12 and the second detector 22, and the traction rope 4 passes around the top of the first support 11 and the second support 21. Since the second drive assembly 32 drives the second detector 22 to move synchronously in the opposite direction to the first detector 12, the traction rope 4 can move along the height direction on the first detector 11. The first drive assembly 31 and the second detector 22 maintain a naturally straight state. Therefore, when the first drive assembly 31 drives the first detector 12 to rise, the traction rope 4 can simultaneously transmit the tension of the second detector 22 when it descends, thereby reducing the workload of the first drive assembly 31. Conversely, when the second drive assembly 32 drives the second detector 22 to rise, the traction rope 4 transmits the tension of the first detector 12 when it descends, thereby reducing the workload of the second drive assembly 32. In addition, when the first drive assembly 31 or the second drive assembly 32 malfunctions and causes one of the detectors to be unable to descend stably, the traction rope 4 can play the role of transmitting counterweight, buffering the fall of the detector and greatly reducing the damage to the millimeter-wave detection equipment.

[0043] The structures of the first support 11 and the second support 21 can be set according to the actual situation, and the structures of the two can be the same or different. For example, both can be cuboid structures, L-shaped structures or frustum structures, or one can be a cuboid structure and the other can be an L-shaped structure or frustum structure.

[0044] In this embodiment, the first support 11 and the second support 21 have identical structures and dimensions, and the first detector 12 and the second detector 22 have identical structures, both having a transmitting end and a receiving end. The transmitting end is used to transmit millimeter waves, and the receiving end is used to receive the reflected millimeter waves. The first detector 12 and the second detector 22 are each externally connected to a computer, which, through built-in software, can receive the electrical signals transmitted by the first detector 12 and the second detector 22 and generate millimeter wave holographic images, thereby facilitating the detection of concealed contraband by personnel. The traction rope 4 is a steel wire rope, and pulleys are provided at the top of both the first support 11 and the second support 21. One end of the traction rope 4 is connected to the first detector 12, and the other end passes over the pulleys at the top of the first support 11 and the second support 21 respectively and is connected to the second detector 22. It can be understood that when using this millimeter wave detection device, the first support 11 and the second support 21 are positioned opposite each other and spaced apart, with the space between them for personnel to enter. The first detector 12 is used to detect the front of the human body, and the second detector 22 is used to detect the back of the human body. It is understood that the traction rope 4 can also be wound only around the top pulley of the first bracket 11 or the second bracket 21, in which case the traction rope 4 forms two rope segments with an acute angle. In another embodiment, a crossbar connects the first bracket 11 and the second bracket 21, and the traction rope 4 can also be wound around the crossbar; it is understood that as long as the first detector 12 and the second detector 22 are pulled by each other through the traction rope 4 to form a counterweight, the specific winding method and winding position of the traction rope 4 are not limited.

[0045] The specific structures of the first driving component 31 and the second driving component 32 can be configured according to actual conditions. In this embodiment, for example... Figures 2 to 4As shown, the first drive assembly 31 includes a drive motor 311 and a first synchronous belt 312. The drive motor 311 is connected to the first bracket 11. The two ends of the first synchronous belt 312 are respectively wound around the output shaft of the drive motor 311 and the first bracket 11, and the first detector 12 is connected to the first synchronous belt 312. The second drive assembly 32 includes a driven wheel shaft 321 and a second synchronous belt 322. The driven wheel shaft 321 is disposed on the second bracket 21. The upper and lower ends of the second synchronous belt 322 are respectively wound around the driven wheel shaft 321 and the second bracket 21, and the second detector 22 is connected to the second synchronous belt 322. The millimeter-wave detection device also includes a linkage assembly 33. The output shaft of the drive motor 311 is connected to the driven wheel shaft 321 through the linkage assembly 33. In another embodiment, the second drive component 32 includes a drive motor 311 and a second synchronous belt 322, that is, the first drive component 31 and the second drive component 32 are independent drive structures and both have autonomous driving capabilities; when the first drive component 31 drives the first detector 12 to move from bottom to top, the second drive component 32 drives the second detector 22 to move from top to bottom. In this case, the millimeter wave detection device does not need to be equipped with a linkage component 33, thereby further simplifying the structure and reducing the difficulty of disassembling and assembling the millimeter wave detection device.

[0046] Understandably, the position of the drive motor 311 can be adjusted according to the actual situation. For example, the drive motor 311 can be set on the first bracket 11, such as the top, middle or bottom of the first bracket 11, or it can be set on the second bracket 21, or it can be set between the first bracket 11 and the second bracket 21.

[0047] Specifically, the first synchronous belt 312 and the second synchronous belt 322 are both synchronous toothed belts commonly used in the art. The drive motor 311 is mounted on the top of the first bracket 11, and the first toothed wheel is mounted on the bottom of the first bracket 11. The output shaft of the drive motor 311 has external teeth. The first synchronous belt 312 is arranged vertically, with one end wrapped around the output shaft of the drive motor 311 and meshing with the external teeth, and the other end wrapped around the first toothed wheel and meshing with the first toothed wheel. The first synchronous belt 312 is in a naturally tensioned state. Similarly, the driven wheel shaft 321 is arranged on the top of the second bracket 21. The driven wheel shaft 321 has external teeth, and the second toothed wheel is mounted on the bottom of the second bracket 21. The second synchronous belt 322 is arranged vertically, with both ends wrapped around the driven wheel shaft 321 and the second toothed wheel, respectively. The second synchronous belt 322 is in a naturally tensioned state.

[0048] In this embodiment, the first detector 12 moves under the drive of the first driving assembly 31, where the driving motor 311 is an active driving structure. The second detector 22 moves under the drive of the second driving assembly 32, where the driven wheel axle 321 of the second driving assembly 32 is a passive following structure, meaning the driven wheel axle 321 is driven by the driving motor 311. Simultaneously, the first detector 12 and the second detector 22 move in opposite directions. For example, when the first detector 12 moves upwards under the drive of the first synchronous belt 312, the second detector 22 moves downwards under the drive of the second synchronous belt 322. Since the driving force for both the first detector 12 and the second detector 22 originates from the driving motor 311, they move at the same speed.

[0049] The specific structure of the linkage component 33 can be configured according to actual conditions, such as a gear set, transmission shaft, etc., as long as it can realize the power transmission between the drive motor 311 and the driven wheel shaft 321. In this embodiment, as shown... Figures 1 to 4 As shown, the linkage assembly 33 includes a transmission synchronous belt 331, one end of which is wound around the output shaft of the drive motor 311, and the other end of which is wound around the driven wheel shaft 321. The drive motor 311 is mounted on the top of the first bracket 11, and the driven wheel shaft 321 is mounted on the top of the second bracket 21. The two ends of the output shaft of the drive motor 311 along the length direction are the first output end and the second output end, respectively. Both the first output end and the second output end are provided with external teeth. The first output end cooperates with the first synchronous belt 312. The driven wheel shaft 321 has a cylindrical structure, and its two ends along the length direction are the front end and the rear end, respectively. Both the front end and the rear end are provided with external teeth. The second synchronous belt 322 is wound around the rear end and meshes with the external teeth of the rear end. The transmission synchronous belt 331 is arranged in the horizontal direction, and the two ends of the transmission synchronous belt 331 are wound around the second output end of the drive motor 311 and the front end of the driven wheel shaft 321, respectively. In another embodiment, the linkage component 33 includes a first bevel gear set, a drive shaft, and a second bevel gear set. One bevel gear in the first bevel gear set is disposed on the second output end of the drive motor 311, and the other bevel gear in the first bevel gear set is disposed on the drive shaft, and the two bevel gears mesh. The drive shaft is arranged horizontally. One bevel gear in the second bevel gear set is disposed at one end of the driven wheel shaft 321, and the other bevel gear in the second bevel gear set is disposed at the end of the drive shaft near the second bracket 21, and the two bevel gears mesh. When the second output end of the drive motor 311 rotates, the drive shaft is driven to rotate through the first bevel gear set, and the drive shaft then transmits power to the driven wheel shaft 321 through the second bevel gear set, thereby driving the second synchronous belt 322 to move.

[0050] To ensure the stability and transmission efficiency of the synchronous belt 331, such as Figures 4 to 6As shown, the linkage component 33 also includes a tensioning mechanism 332, which includes a wheel frame 3321 and a tensioning wheel 3322. The tensioning wheel 3322 is rotatably mounted on the wheel frame 3321 and is positioned against the transmission synchronous belt 331. The wheel frame 3321 is connected to the first support 11 and / or the second support 21, and the wheel frame 3321 can move closer to or further away from the tensioning wheel 3322. In this embodiment, two tensioning mechanisms 332 are provided, respectively installed on the top of the first support 11 and the second support 21. The tensioning wheels 3322 of the two tensioning mechanisms 332 push against the transmission synchronous belt 331 from bottom to top to keep the transmission synchronous belt 331 taut. It can be understood that when the millimeter-wave detection equipment needs to be moved, the operator first turns off the drive motor 311, and then adjusts the wheel frame 3321 to gradually reduce the pressure between the tensioning wheel 3322 and the transmission synchronous belt 331 until the transmission synchronous belt 331 is completely relaxed. Afterwards, the staff removes the transmission synchronous belt 331 from the drive motor 311 and the driven wheel shaft 321, and then removes the traction rope 4 from the two detectors, thus realizing the separation of the first detection unit 1 and the second detection unit 2. The assembly process is the reverse. Compared with the synchronous belt structure with a single loop in other millimeter wave detection equipment, the millimeter wave detection equipment in this embodiment adopts a segmented synchronous belt design, which only requires the disassembly and assembly of the transmission synchronous belt 331, greatly reducing the difficulty of disassembly and assembly, improving the efficiency of disassembly and assembly, and facilitating assembly and transportation.

[0051] Furthermore, such as Figures 1 to 4 As shown, the first bracket 11 is provided with a first slide rail 111 extending along the height direction, and a first slider 112 is slidably disposed on the first slide rail 111. The first detector 12 is fixedly connected to the first slider 112, and the first drive assembly 31 is connected to the first slider 112. The second bracket 21 is provided with a second slide rail 211 extending along the height direction, and a second slider 212 is slidably disposed on the second slide rail 211. The second detector 22 is fixedly connected to the second slider 212, and the second drive assembly 32 is connected to the second slider 212. The first detector 12 is bolted to the first slider 112, and the second detector 22 is bolted to the second slider 212. The first slider 112 is fixedly connected to the first synchronous belt 312, and the second slider 212 is fixedly connected to the second synchronous belt 322. Therefore, when the first synchronous belt 312 moves under the drive of the drive motor 311, it will drive the first slider 112 to move. Similarly, the second slider 212 will also move under the drive of the second synchronous belt 322.

[0052] In this embodiment, the traction rope 4 is a non-elastic steel wire rope. One end of the traction rope 4 is hooked into the ear hole of the first slider 112 through a hook, and the other end passes around the pulleys at the top of the first bracket 11 and the second bracket 21 in sequence, and is hooked into the ear hole of the second slider 212 through a hook. When the first slider 112 moves from bottom to top under the drive of the first synchronous belt 312, the second slider 212 moves from top to bottom under the drive of the second synchronous belt 322. During this process, the traction rope 4 always remains naturally straight and its length remains unchanged. The second slider 212 descending on one side will become the counterweight of the traction rope 4, thereby reducing the load on the drive motor 311. When the drive motor 311 malfunctions or slips with the synchronous belt, the traction rope 4 can also apply a pulling force to the descending side to prevent the detector from falling rapidly and causing damage. In another embodiment, the traction rope 4 includes a first rope segment and a second rope segment, wherein one end of the first rope segment is fixedly connected to the first slider 112, and one end of the second rope segment is fixedly connected to the second slider 212. The first rope segment and the second rope segment are detachably connected by means of hooks, threads, or buckles. When the millimeter-wave inspection device needs to be disassembled, the staff separates the first rope segment and the second rope segment, and ties the first rope segment to the first bracket 11 and the second rope segment to the second bracket 21. This can, to a certain extent, ensure the locking and limiting of the first slider 112 and the second slider 212, and prevent the first slider 112 and the second slider 212 from sliding freely during transportation, thereby preventing the detector from being damaged by impact.

[0053] The first detector 12 can move between the first upper limit and the first lower limit on the first bracket 11. The first bracket 11 is provided with a first proximity switch and a second proximity switch corresponding to the first upper limit and the first lower limit, respectively. The first proximity switch and the second proximity switch are electrically connected to the drive motor 311. The millimeter wave detection device can detect the first detector 12 through the first proximity switch and the second proximity switch, and control the drive motor 311 to change the output direction by sending an electrical signal, thereby automatically resetting the first detector 12. In this embodiment, both the first proximity switch and the second proximity switch are common contactless sensors used in the art to detect the presence of an object at a certain location. Their specific structure and working principle are not described in detail here. The first slider 112 moves vertically on the first bracket 11 and has a highest point and a lowest point, corresponding to the first upper limit and the first lower limit of the first detector 12. When the first slider 112 moves the first detector 12 from the first lower limit to the first upper limit, the first detector 12 completes the scanning and detection of the front of the human body from bottom to top along the height direction. Then, the first proximity switch at the top sends a signal to the drive motor 311 to control the output shaft of the drive motor 311 to change direction. After that, the first slider 112 will move in the opposite direction to the first lower limit. During this process, the first detector 12 completes the scanning and detection of the front of the human body from top to bottom along the height direction. Then, the second proximity switch at the bottom sends a signal to the drive motor 311 to control the output shaft of the drive motor 311 to change direction.

[0054] Furthermore, the second detector 22 is movable between a second upper limit and a second lower limit on the second bracket 21. When the first detector 12 moves to the first upper limit, the second detector 22 moves to the second lower limit, and vice versa. A third proximity switch and a fourth proximity switch are respectively provided on the second bracket 21 corresponding to the second upper limit and the second lower limit. The third proximity switch and the fourth proximity switch are used to detect the second detector 22, and both of them can send electrical signals. In this embodiment, the third proximity switch and the fourth proximity switch are the same as the first proximity switch, both used to detect the position of the second detector 22. The second slider 212 moves vertically on the second bracket 21 and has a highest point and a lowest point, corresponding to the second upper limit and the second lower limit of the second detector 22. In normal operation, when the first detector 12 moves to the first upper limit on the first support 11, the second detector 22 moves to the second lower limit on the second support 21. Subsequently, the first detector 12 moves downward under the drive of the first synchronous belt 312, and simultaneously, the second detector 22 moves upward under the drive of the second synchronous belt 322. When the first detector 12 moves downward to the first lower limit, the second detector 22 moves upward to the second upper limit. Therefore, it is possible to determine whether the millimeter-wave detection device is malfunctioning by judging whether the first proximity switch and the fourth proximity switch, the second proximity switch and the third proximity switch simultaneously emit electrical signals. That is, if any structure of the linkage component 33, the first synchronous belt 312 and the second synchronous belt 322 malfunctions or slips, neither the first detector 12 nor the second detector 22 can achieve the above operating state.

[0055] In another embodiment, a first proximity switch and a second proximity switch are respectively provided on the first bracket 11 at positions corresponding to the first upper limit and the first lower limit. A third proximity switch is provided on the second bracket 21 at a position slightly higher than the second upper limit, and a fourth proximity switch is provided on the second bracket 21 at a position slightly lower than the second lower limit. When the millimeter-wave detection device is operating normally, when the first proximity switch detects the first detector 12 at the first upper limit and the second detector 22 moves to the second lower limit, the first proximity switch will send an electrical signal to the outside, while the fourth proximity switch will not send an electrical signal. Therefore, if the first proximity switch and the fourth proximity switch send electrical signals at the same time, it proves that the second drive component 32 has experienced a "skipping tooth" phenomenon, thereby reminding the staff to stop the machine for inspection. When the second proximity switch detects the first detector 12 at the first lower limit and the second detector 22 moves to the second upper limit, the second proximity switch will send an electrical signal to the outside, while the third proximity switch will not send an electrical signal. Therefore, if the second proximity switch and the third proximity switch send electrical signals at the same time, it also proves that the second drive component 32 has experienced a "skipping tooth" phenomenon, thereby reminding the staff to stop the machine for inspection.

[0056] In addition, a zero-position proximity switch is provided on the first bracket 11. The zero-position proximity switch is located between the first proximity switch and the second proximity switch and is used to calibrate the zero point position of the stroke of the first slider 112 so as to calibrate the zero point of the millimeter-wave holographic image in the computer software.

[0057] To prevent damage to the millimeter-wave detection equipment during transport, the equipment also includes a stop pin. The first slider 112 and the second slider 212 each have insertion holes matching the stop pin, and the first bracket 11 and the second bracket 21 each have limiting holes for inserting the stop pin. In this embodiment, during transport of the millimeter-wave detection equipment, both the first synchronous belt 312 and the second synchronous belt 322 lose their driving force and can move freely under external force. The operator inserts the stop pin through the first slider 112 into the limiting hole on the first bracket 11. The stop pin locks the first slider 112, preventing the first synchronous belt 312 from moving during transport and causing the first detector 12 on it to collide with other objects and be damaged. The second slider 212 is treated similarly.

[0058] The millimeter-wave detection equipment also includes a top cover (not shown in the figure). One end of the top cover is attached to the top of the first support 11, and the other end is attached to the top of the second support 21. The top cover protects the drive unit 3, thereby extending the service life of the millimeter-wave detection equipment. In this embodiment, the top cover is a rectangular shell structure, with one end snapped to the top of the first support 11 and the other end snapped to the top of the second support 21. During detection, personnel stand under the top cover between the first support 11 and the second support 21.

[0059] The specific installation position of the drive unit 3 and its connection with the linkage component 33 can be set according to the actual situation. For example, the drive motor 311 of the drive unit 3 can be installed on the top cover between the two brackets. The drive motor 311 is connected to the vertically arranged first synchronous belt 312 through a gear shaft group mechanism or a transmission belt mechanism. At the same time, the drive motor 311 is also connected to the second synchronous belt 322 on the other side through the linkage component 33. In this case, when disassembling and assembling the millimeter-wave detection equipment, the drive motor 311, the gear shaft group mechanism, the transmission belt mechanism and the top cover form a module. Disconnect the gear shaft group mechanism or the transmission belt mechanism from the first synchronous belt 312, disconnect the drive motor 311 from the linkage component 33, and remove the top cover from the first bracket 11 and the second bracket 21 to complete the disassembly of the millimeter-wave detection equipment. The drive motor 311 can also be positioned at the middle or bottom of the first bracket 11 in the height direction. When the drive motor 311 is installed at the middle position of the first bracket 11, the drive motor 311 is connected to the horizontally arranged synchronous belt 331 through a gear shaft assembly mechanism or a transmission belt mechanism. In this case, when disassembling and assembling the millimeter-wave detection equipment, the drive motor 311, the gear shaft assembly mechanism, the transmission belt mechanism, and the first bracket 11 form a module, and the gear shaft assembly mechanism or transmission belt mechanism is disconnected from the synchronous belt 331 of the linkage assembly 33. The millimeter-wave detection device can be disassembled by connecting the drive motor 311 at the bottom of the first bracket 11 and the first synchronous belt 312 above the drive motor 311. At this time, the linkage component 33 is located at the bottom of the first bracket 11 and the second bracket 21. In this case, when disassembling and assembling the millimeter-wave detection device, the drive motor 311 and the first bracket 11 form a module. The transmission synchronous belt 331 of the linkage component 33 is disconnected from the drive motor 311 and the driven wheel shaft 321, and the millimeter-wave detection device can be disassembled.

[0060] To improve the stability of this millimeter-wave detection equipment during operation, such as Figure 1 and Figure 2As shown, the millimeter-wave detection equipment also includes a connecting base frame 5. One end of the connecting base frame 5 is detachably connected to the bottom of the first support 11, and the other end of the connecting base frame 5 is detachably connected to the bottom of the second support 21. In this embodiment, bolt holes are pre-drilled at the bottom of both the first support 11 and the second support 21. Both ends of the connecting base frame 5 are bolted to the first support 11 and the second support 21 respectively, thereby connecting the first support 11 and the second support 21 to form a stable overall structure. The specific structure of the connecting base frame 5 can be selected according to the actual situation, as long as it can bolt the first support 11 and the second support 21 together as a whole. There are no restrictions on the specific structure of the connecting base frame 5.

[0061] In another embodiment, the base frame 5 is connected to the first support 11 to form an integral structure, that is, the first support 11 and the base frame 5 form an L-shaped structure, wherein the base frame 5 forms a closed structure through an externally enclosing frame plate; in this case, the linkage component 33 is disposed inside the base frame 5, the drive motor 311 is installed at the bottom end of the first support 11 and is driven and connected to the transmission synchronous belt 331 of the linkage component 33, and the driven wheel axle 321 of the second drive component 32 is also installed at the bottom end of the second support 21 and is driven and connected to the transmission synchronous belt 331. In yet another embodiment, a certain position on the side of the first support 11 (not the top and bottom ends) is connected to the second support 21 through a closed side plate frame, the drive motor 311 is installed at the connection position between the first support 11 and the side plate frame, and the transmission synchronous belt 311 and the tensioning mechanism 332 are both disposed inside the side plate frame, and the transmission synchronous belt 331 is driven and connected to the second synchronous belt 311 through a gear shaft mechanism or a transmission belt mechanism.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A millimeter-wave detection device, characterized in that, include: The first detection unit (1) includes a first support (11) and a first detector (12). The first detector (12) is movably disposed on the first support (11) along the height direction. The first detector (12) is capable of transmitting and receiving millimeter waves. The second detection unit (2) is spaced apart from the first detection unit (1). The second detection unit (2) includes a second support (21) and a second detector (22). The second detector (22) is movably mounted on the second support (21) along the height direction. The second detector (22) is capable of transmitting and receiving millimeter waves. The driving unit (3) includes a first driving component (31) and a second driving component (32). The first driving component (31) is disposed on the first support (11) and drives the first detector (12) to move. The second driving component (32) is disposed on the second support (21) and is configured to drive the second detector (22) to move synchronously in the opposite direction to the first detector (12). A traction rope (4) is provided, one end of which is detachably connected to the first detector (12), and the other end of which is detachably connected to the second detector (22) after passing over the top of the first bracket (11) and / or the second bracket (21). The traction rope (4) is naturally straight.

2. The millimeter-wave detection device according to claim 1, characterized in that, The first drive assembly (31) includes a drive motor (311) and a first synchronous belt (312). The drive motor (311) is connected to the first bracket (11). The two ends of the first synchronous belt (312) are respectively wound around the output shaft of the drive motor (311) and the first bracket (11), and the first detector (12) is connected to the first synchronous belt (312). The second drive assembly (32) includes a driven wheel shaft (321) and a second synchronous belt (322). The driven wheel shaft (321) is disposed on the second bracket (21). The two ends of the second synchronous belt (322) are respectively wound around the driven wheel shaft (321) and the second bracket (21), and the second detector (22) is connected to the second synchronous belt (322). The millimeter-wave detection device also includes a linkage component (33), and the output shaft of the drive motor (311) is connected to the driven wheel shaft (321) through the linkage component (33).

3. The millimeter-wave detection device according to claim 2, characterized in that, The linkage assembly (33) includes a transmission timing belt (331), one end of which is wound around the output shaft of the drive motor (311), and the other end of which is wound around the driven wheel shaft (321).

4. The millimeter-wave detection device according to claim 3, characterized in that, The linkage component (33) further includes a tensioning mechanism (332), which includes a wheel frame (3321) and a tensioning wheel (3322). The tensioning wheel (3322) is rotatably mounted on the wheel frame (3321) and is positioned against the transmission synchronous belt (331). The wheel frame (3321) is connected to the first bracket (11) and / or the second bracket (21), and the wheel frame (3321) can move closer to or further away from the tensioning wheel (3322).

5. The millimeter-wave detection device according to claim 2, characterized in that, The first detector (12) can move between a first upper limit and a first lower limit on the first bracket (11). A first proximity switch and a second proximity switch are respectively provided on the first bracket (11) corresponding to the first upper limit and the first lower limit. The first proximity switch and the second proximity switch are respectively used to detect the first detector (12). The first proximity switch and the second proximity switch are respectively electrically connected to the drive motor (311).

6. The millimeter-wave detection device according to claim 5, wherein the second detector (22) is movable on the second bracket (21) between a second upper limit position and a second lower limit position, and when the first detector (12) moves to the first upper limit position, the second detector (22) moves to the second lower limit position, and when the first detector (12) moves to the second upper limit position, the second detector (22) moves to the second upper limit position; The second bracket (21) is provided with a third proximity switch and a fourth proximity switch corresponding to the second upper limit and the second lower limit, respectively. The third proximity switch and the fourth proximity switch are used to detect the second detector (22), and both the third proximity switch and the fourth proximity switch can send electrical signals.

7. The millimeter-wave detection device according to claim 1, characterized in that, The first bracket (11) is provided with a first slide rail (111) extending along the height direction, and a first slider (112) is slidably provided on the first slide rail (111). The first detector (12) is fixedly connected to the first slider (112), and the first drive assembly (31) is connected to the first slider (112). The second bracket (21) is provided with a second slide rail (211) extending along the height direction, and a second slider (212) is slidably provided on the second slide rail (211). The second detector (22) is fixedly connected to the second slider (212), and the second drive assembly (32) is connected to the second slider (212).

8. The millimeter-wave detection device according to claim 7, characterized in that, The millimeter-wave detection device also includes a stop pin. The first slider (112) and the second slider (212) are each provided with a hole matching the stop pin. The first bracket (11) and the second bracket (21) are each provided with a limiting hole for inserting the stop pin.

9. The millimeter-wave detection device according to any one of claims 1-8, characterized in that, The millimeter-wave detection device also includes a top cover, one end of which is placed on the top of the first support (11), and the other end of which is placed on the top of the second support (21).

10. The millimeter-wave detection device according to any one of claims 1-8, characterized in that, The millimeter-wave detection device also includes a connecting base frame (5), one end of which is detachably connected to the bottom of the first support (11), and the other end of which is detachably connected to the bottom of the second support (21).

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