Metal Detection Equipment

Abstract

The present invention relates to the technical field of metal object detection, and discloses a metal detection device, including a door frame and a detection mechanism, wherein sliding grooves are provided on both sides of the door frame, and telescopic mechanisms are slidably connected in the sliding grooves on both sides, and the telescopic mechanisms include a connecting box and a gear, a first rack and a second rack arranged inside the connecting box, the first rack and the second rack are respectively meshed with the two sides of the gear, and both ends of the first rack and the second rack are slidably connected to the connecting box; the detection mechanism includes two arc-shaped detection blocks distributed on both sides of the door frame, and a plurality of probes are provided on the inner side walls of the two detection blocks, wherein the two ends of one detection block are respectively connected to the first rack in the telescopic mechanisms on both sides by setting a first connection block, and the two ends of the other detection block are respectively connected to the second rack in the telescopic mechanisms on both sides by setting a second connection block, so as to solve the problem that the existing metal detection equipment has insufficient detection accuracy and cannot block people.

Description

Technical Field

[0001] The present invention relates to the technical field of metal object detection, in particular to metal detection equipment. Background Art

[0002] Magnetic resonance imaging is another major advancement in medical imaging after CT. As an analytical method, it is widely used in physics, chemistry, biology and other fields. It was not until 1973 that it was used for medical clinical testing. Due to its powerful clinical diagnostic function, it has gradually developed into an important medical testing method. More and more MRIs are installed in hospitals at all levels. During MRI examinations, due to the very strong magnetic field in the MRI machine and the MRI room, patients and staff entering the examination room are strictly prohibited from carrying metal objects. In particular, patients with metal objects such as stents in their bodies are strictly prohibited from undergoing MRI examinations, otherwise it is easy for the metal to be attracted by the strong magnetic field and move, which may have serious consequences and even life-threatening consequences.

[0003] There are usually eye-catching signs outside the door of the MRI room in the hospital to indicate that MRI examinations are absolutely prohibited. However, even with warning signs and doctors' reminders, it is still inevitable that patients will accidentally bring metal into the examination room, which may eventually lead to major medical accidents. Therefore, it is particularly important to install metal detection equipment at the door of the MRI room.

[0004] At present, metal detection gates are often used for metal inspection in security places such as stations and conference halls. However, the detection accuracy of existing metal detection gates is not enough and they cannot be directly used before MRI examinations that have strict requirements on metal detection. In addition, the metal detection gates do not have relevant auxiliary devices. If they are used directly, there is still a situation where patients will pass directly and carry metal into the MRI room without staff supervision. Summary of the invention

[0005] The present invention aims to provide a metal detection device to solve the problem that the existing metal detection device has insufficient detection accuracy and cannot block people.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a metal detection device, including a door frame and a detection mechanism, wherein slide grooves are provided on both sides of the door frame, and telescopic mechanisms are slidably connected in the slide grooves on both sides, and the telescopic mechanisms include a connecting box and a gear, a first rack and a second rack arranged inside the connecting box, the first rack and the second rack are respectively meshed with the two sides of the gear, and both ends of the first rack and the second rack are slidably connected to the connecting box; the detection mechanism includes two arc-shaped detection blocks distributed on both sides of the door frame, and a plurality of probes are provided on the inner side walls of the two detection blocks, wherein the two ends of one detection block are respectively connected to the first rack in the telescopic mechanisms on both sides by setting a first connecting block, and the two ends of the other detection block are respectively connected to the second rack in the telescopic mechanisms on both sides by setting a second connecting block.

[0007] The beneficial effects of this solution are as follows: the telescopic mechanism can enable the two detection blocks to move away from or closer to each other to adapt to the detection examination of patients of different body shapes, so that the probes on the two detection blocks can better fit the patient's body and improve the detection accuracy. At the same time, the two arc-shaped detection blocks form an annular detection structure, which can limit the patient's movement during the detection process and prevent some patients from leaving prematurely before the examination is completed due to lack of patience.

[0008] Preferably, a sliding mechanism is provided inside the door frame, and the sliding mechanism includes two driving sprockets, a plurality of steering sprockets and a return chain. The two driving sprockets are respectively rotatably connected to the bottom on both sides of the door frame, and the plurality of steering sprockets are respectively rotatably connected to the top on both sides of the door frame, and the return chain is engaged with all the driving sprockets and all the steering sprockets; a first connecting groove is provided in both side door frames, and the connecting boxes in the sliding grooves on both sides are respectively connected to the parts of the return chain that move in the same direction on both sides of the door frame through the first connecting groove.

[0009] Preferably, both ends of the connection box are provided with limit plates, both ends of the limit plates are extended to contact the surface of the door frame, and both ends of the first rack and the second rack are extended outside the limit plates.

[0010] Preferably, it further comprises a step platform, the top surface of the step platform is located above the bottom of the slideway, and the step platform is located directly below the two detection blocks.

[0011] Preferably, it also includes a storage mechanism, which includes a storage box, a storage table, an inclined plate and a conveyor belt. The storage table is arranged next to the door frame, and the storage box is placed on the storage table. The inclined plate and the conveyor belt are both connected to the top of the storage table. An inclined surface is provided at the top of the storage table near one end of the inclined plate, and a baffle is hinged at the lower end of the inclined surface. The baffle is connected to a switch, and the switch is arranged on a side of the storage table near the door frame. The switch controls the baffle to tilt toward the surface of the inclined plate, and the storage box slides along the surface of the inclined plate under the action of the inclined surface.

[0012] Preferably, the switch is a magnetic induction switch, a second connecting groove is provided on one side of the door frame close to the storage table, a magnet is connected to the return chain, and when the connecting box moves to the bottom of the first connecting groove, the magnet moves to contact the magnetic induction switch.

[0013] Preferably, a plurality of ultrasonic sensors are installed on both sides of the bottom of the two detection blocks.

[0014] Preferably, it also includes an automatic control system, which includes a single-chip microcomputer, a pressure sensor is installed inside the platform, the gears are connected to the first motor, the driving sprockets are connected to the second motor, and all probes, all ultrasonic sensors, pressure sensors, the first motor and the second motor are connected to the single-chip microcomputer.

[0015] Preferably, a plurality of probes are provided on the top of the detection block, and the lengths of the first rack and the second rack in the telescopic mechanism can ensure that the two detection blocks can be respectively moved horizontally from the wrist to the armpit under the patient's outstretched arm.

[0016] Preferably, the platform is rotatably arranged, and is connected to a third motor, which is connected to the single-chip microcomputer; it also includes a lifting assembly, which includes a slider, an L-shaped connector and a handlebar, the slider is slidably connected in the second connecting groove, one end of the L-shaped connector is fixed to the slider, and the other end is fixed to the handlebar. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the device in Example 1 of the present invention;

[0018] Figure 2 A top view of the device in Example 1 of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the sliding mechanism in Example 1 of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the telescopic mechanism in Example 1 of the present invention;

[0021] Figure 5 A three-dimensional diagram of the device in Example 2 of the present invention;

[0022] Figure 6 This is a three-dimensional diagram of the device in Example 3 of the present invention. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The figure marks in the drawings of the specification include: door frame 1, base 10, slide groove 11, first connecting groove 12, second connecting groove 13, detection block 2, probe 21, first connecting block 22, second connecting block 23, ultrasonic sensor 24, gear 3, first rack 31, second rack 32, connecting box 33, limit plate 34, handle 4, slider 41, L-shaped connector 42, storage box 5, storage table 51, tilting plate 52, conveyor belt 53, baffle 54, platform 6, return chain 7, driving sprocket 71, steering sprocket 72, magnet 73.

[0025] Example 1

[0026] Embodiment 1 is basically as attached Figure 1-4 As shown, Figure 1 The metal detection device shown includes a base 10, a door frame 1, a detection mechanism and a telescopic mechanism. The door frame 1 is welded and fixed on the base 10. Both sides of the door frame 1 are provided with vertical long strip slides 11. Two telescopic mechanisms are provided, and the two telescopic mechanisms are respectively slidably connected in the slides 11 on both sides of the door frame 1; the detection mechanism is slidably connected between the two telescopic mechanisms, thereby realizing the sliding connection between the detection mechanism and the door frame 1. The metal detection device is placed at the door of the nuclear magnetic resonance room, and it is ensured that there are no reserved channels at both ends of the door frame 1 after placement, so as to ensure that the patient must pass through the door frame 1 to enter the nuclear magnetic resonance room, and avoid the patient bypassing the metal detection device and accidentally entering. When the patient passes through the door frame 1, the detection mechanism slides from top to bottom along the door frame 1 driven by the telescopic mechanism, and the patient is subjected to a comprehensive metal detection from head to toe; if no metal is detected, the inspection is qualified, the door of the nuclear magnetic resonance room is opened, and the patient can enter the nuclear magnetic resonance room to ensure safety.

[0027] like Figure 2 As shown, the detection mechanism includes two detection blocks 2, which are symmetrically distributed on the front and rear sides of the door frame 1. The detection blocks 2 are all arc-shaped, and a number of probes 21 are installed on the inner side walls of the arc-shaped detection blocks 2. The probes 21 are metal probes 21. The metal probes 21 are based on electromagnetic induction. When a metal object approaches the probe 21, the induced electromagnetic signal will be changed and an alarm will be issued to remind the patient to immediately check and remove the metal object at that location. The two arc-shaped detection blocks 2 form a ring-shaped detection structure, which can limit the patient's movement during the detection process to prevent some patients from leaving early before the inspection is completed due to lack of patience.

[0028] like Figure 4As shown, the telescopic mechanism includes a connecting box 33 and a gear 3, a first rack 31 and a second rack 32 arranged inside the connecting box 33. A first motor (not shown in the figure) is fixed to the bottom of the connecting box 33 by screws, the output shaft of the first motor is vertically upward, and the gear 3 is connected to the output shaft by a bearing. The second rack 32 and the first rack 31 are respectively meshed with the left and right sides of the gear 3, and the first rack 31 and the second rack 32 are horizontally slidably connected to the connecting box 33; at the same time, a limit plate 34 is welded and fixed to the front and rear sides of the connecting box 33, and both ends of the limit plate 34 extend to slide in contact with the surface of the door frame 1 to improve the stability of the connecting box 33 when sliding up and down in the slide groove 11; both ends of the first rack 31 and the second rack 32 extend to the outside of the limit plate 34, that is, the limit plate 34 and the side wall of the connecting box 33 are provided with through holes for the first rack 31 and the second rack 32 to slide. Figure 2 As shown, the two ends of one detection block 2 are respectively fixedly connected to the first rack 31 in the telescopic mechanism on both sides by providing a first connection block 22, and the two ends of the other detection block 2 are respectively fixedly connected to the second rack 32 in the telescopic mechanism on both sides by providing a second connection block 23, and after the setting, the first connection block 22 and the second connection block 23 are not in contact with each other, and the two detection blocks 2 after connection are in the same horizontal plane. When the first motor drives the gear 3 to rotate clockwise, the two detection blocks 2 are close to each other; when the gear 3 rotates counterclockwise, the two detection blocks 2 are away from each other, so as to adapt to the detection examination of patients of different body shapes, so that the probes 21 on the two detection blocks 2 can better fit the patient's body and improve the detection accuracy.

[0029] The door frame 1 is hollow inside and is provided with a sliding mechanism. Figure 3 As shown, the sliding mechanism includes two driving sprockets 71, a plurality of steering sprockets 72 and a return chain 7. The two driving sprockets 71 are rotatably connected to the bottom of both sides of the door frame 1, and the two driving sprockets 71 are connected to a second motor (not shown in the figure). The second motor is fixed inside the door frame 1. After fixation, the output shaft of the second motor is horizontal, and the output shaft is connected to the driving sprocket 71. When the second motor is started, the driving sprocket 71 can be driven to rotate. A plurality of steering sprockets 72 are rotatably connected to the top of both sides of the door frame 1 through rotating shafts. In this embodiment, two steering sprockets 72 are respectively provided on the left and right sides of the door frame 1, and the return chain 7 is meshed with all the driving sprockets 71 and all the steering sprockets 72; when the two second motors are started, the two driving sprockets 71 are driven to rotate clockwise, and the return chain 7 is meshed with all the driving sprockets 71 and all the steering sprockets 72. Figure 3 The connecting boxes 33 in the two side slide grooves 11 are respectively connected to the parts of the return chain 7 that move in the same direction on both sides of the door frame 1. Figure 1As shown: a first connecting groove 12 connecting the slide groove 11 and the door frame 1 is opened at the right end of the left slide groove 11, and the connecting box 33 in the left slide groove 11 is fixed to the upper end of the return chain 7 moving downward from the right direction in the left door frame 1 by a connecting piece; another first connecting groove 12 connecting the slide groove 11 and the door frame 1 is opened at the right end of the right slide groove 11, and the connecting box 33 in the right slide groove 11 is connected to the upper end of the return chain 7 moving downward from the right direction in the right door frame 1, and the same return chain 7 ensures that the connecting boxes 33 on the left and right sides can move downward synchronously, thereby driving the two detection blocks 2 to move downward synchronously, avoiding asynchronous movement of the two ends of the detection block 2 and damage to the detection block 2.

[0030] like Figure 1 As shown, a platform 6 is also provided on the base 10. The platform 6 is cylindrical and is located directly below the door frame 1, and the top surface of the platform 6 is located above the groove wall below the slide groove 11. The platform 6 plays a positioning role, and not only ensures that the patient can stand accurately between the two detection blocks 2, but also serves the purpose of reminding the patient to stay here; at the same time, the platform 6 raises the feet of the patient being detected, thereby ensuring that the two detection blocks 2 can move downward and pass through the soles of the shoes, so as to perform more comprehensive metal detection on the patient. When the detection is completed, the two detection blocks 2 move downward to below the patient's feet. At this time, the patient can be released by walking off the platform 6 and crossing the detection block.

[0031] At the same time, a storage mechanism is also provided on the base 10, and the storage mechanism includes a storage box 5, an inclined plate 52 and a conveyor belt 53. A storage table 51 is vertically fixed on the base 10, and the storage box 5 is placed on the storage table 51. The lower part of the inclined plate 52 is inclined by a support rod (the support rod is not shown in the figure), and the top of the inclined plate 52 is close to the storage table 51; at the same time, the top surface of the storage table 51 close to the inclined plate 52 is set as a downward inclined surface; the lower end of the inclined surface is hinged with a baffle 54 through a rotating shaft, and the rotating shaft is connected to a control motor, and the control motor is connected to a switch. The control motor is installed inside the storage table 51, and the switch is set on the side of the storage table 51 close to the door frame 1. When the switch is activated, the baffle 54 tilts toward the surface of the inclined plate 52, even if the blocking effect of the baffle 54 on the storage box 5 on the top surface of the storage table 51 disappears, the center of gravity of the storage box 5 is offset under the action of the inclined surface, and slides along the surface of the inclined plate 52. In this embodiment, the switch is a magnetic induction switch, such as Figure 1 As shown, the left side of the door frame 1 is also provided with a second connecting groove 13, which is connected to the leftmost side of the door frame 1. Figure 3As shown, according to the height of the magnetic induction switch, a magnet 73 is fixed to the position of the circular chain 7 that will move upward in the left door frame 1. Specifically, starting from the position where the connecting box 33 is connected to the upper left side of the circular chain 7, the magnet 73 is fixed a distance downward, and it is ensured that when the connecting box 33 moves to the bottom, the magnet 73 just moves to contact with the magnetic induction switch on the support table, so that when the connecting box 33 drives the detection mechanism to move to the bottom to complete the metal detection of the sole of the foot, the magnet 73 moves upward to contact with the magnetic induction switch, the baffle 54 opens, and the storage box 5 automatically slides away, and after the storage box 5 slides away, the control motor can make the baffle 54 erect again to continue to block the next storage box 5.

[0032] Shielding plates 54 are fixed on both sides of the inclined plate 52 to prevent the storage box 5 from falling during the movement. One end of the conveyor belt 53 is close to the rear of the storage platform 51, and the top surface of the conveyor belt 53 is slightly higher than the top surface of the storage platform 51. The other end of the conveyor belt 53 and the other end of the inclined plate 52 are both connected to a storage room. When the storage box 5 on the storage platform 51 slides down, the new storage box 5 is manually transferred to the storage platform 51 through the conveyor belt 53. At the same time, the staff of the storage room tilts the storage box 5 that slides off the plate 52 and stores it for supervision. In the process of the detection mechanism performing metal detection on the patient, when metal is detected, an alarm is sounded to remind the patient to check the place and take down the metal objects in time and place them in the storage box for temporary storage. The storage mechanism set beside the door frame 1 can ensure that the patient takes down and stores the metal objects without leaving the step 6, thereby further improving the detection efficiency and facilitating the patient to complete the metal detection independently. Considering the safety of the removed metal objects, a cover is provided on the top of the storage box 5; after the detection is completed, the switch is started, the baffle 54 is tilted, and the storage box 5 immediately and automatically slides to the storage room for temporary storage, so as to prevent the patient from carrying the metal objects again after passing the detection, which may cause safety accidents.

[0033] Several ultrasonic sensors are also installed on both sides of the bottom of the two detection blocks 2. The ultrasonic sensors emit ultrasonic waves vertically downward and can measure the distance from the detection block 2 to the patient's shoulder and the approximate body shape of the patient in real time according to the reflected signal. Among them, the distance from the detection block 2 to the patient's shoulder is the distance directly measured by the ultrasonic sensor directly above the patient's shoulder. The method of measuring the approximate body shape of the patient is specifically as follows: by comparing the difference in distances measured by two adjacent ultrasonic sensors on both sides of the detection block 2, when the difference is greater than 30cm, it means that the distance measured by the adjacent outer ultrasonic sensor is the distance between the detection block 2 and the surface of the base 10, and the distance measured by the adjacent inner ultrasonic sensor is the distance between the detection block 2 and the patient's body. Then, the width between the two outer ultrasonic sensors on both sides of the detection block 2 where the difference in measurement becomes larger is the patient's body width. The telescopic mechanism adjusts the distance between the two detection blocks 2 according to the patient's width to ensure that the probe 21 can fit the patient's body more closely for accurate metal detection. The detection mechanism is located at the top of the door frame 1 before detection to accommodate patients of different heights. At this time, the two detection blocks 2 are close to each other under the control of the telescopic mechanism to better accurately detect the patient's head and ears. During the downward movement of the detection mechanism, when the ultrasonic sensor measures that the distance from the detection block 2 to the patient's shoulder is less than a certain value, the two detection blocks 2 are moved away from each other until the distance measured by the ultrasonic sensor in the middle suddenly becomes larger, indicating that the detection block 2 has extended outside the human body. At this time, the telescopic mechanism stops working and continues to move downward for metal detection.

[0034] The specific implementation process is as follows:

[0035] Before the patient arrives, the detection mechanism is located at the top of the door frame 1 , and an empty storage box 5 is placed on the storage table 51 .

[0036] After the patient stands on the step 6 in front of the door frame 1, the two second motors are started to rotate clockwise, and all the probes 21 and all the ultrasonic sensors are controlled to start at the same time. The return chain 7 drives the connection boxes 33 on both sides to move down synchronously, and then drives the detection mechanism to move down to start 360° metal detection from head to toe of the patient under the door frame 1. When metal is detected somewhere, an alarm is immediately issued to prompt "metal is detected here", and when the alarm sounds, the two synchronous second motors are paused. At this time, the patient immediately checks the place and takes out the metal objects and places them in the storage box 5 next to it; the second motor is paused for a period of time and then started again, and the place where the metal is detected is first checked for the second time. If the inspection is passed, the detection mechanism continues to move downward until it moves down to the bottom of the step 6, and when the detection mechanism moves to the bottom of the step 6, it indicates that there are no more metal objects on the patient and the inspection is qualified.

[0037] When the test is qualified, the restriction of the patient by the detection block 2 is released, and the patient can enter the MRI room by stepping down the platform 6. When the detection mechanism moves to the bottom of the platform 6, the magnet 73 on the return chain 7 and the magnetic induction switch are mutually induced, the switch is activated, the baffle 54 falls down, and the storage box 5 storing the patient's belongings slides from the inclined plate 52 into the storage room; after the patient's examination is finished, he can go to the storage room to take his belongings.

[0038] Example 2

[0039] like Figure 5 The metal detection device shown is different from the embodiment 1 in that: a plurality of probes 21 are provided on the top of the detection block 2; an automatic control system is also included, the automatic control system includes a single chip microcomputer, a pressure sensor is installed inside the step 6, the first motor and the second motor are both stepper motors, all probes 21, all ultrasonic sensors, pressure sensors, the first motor and the second motor are connected to the single chip microcomputer, and the automatic detection of the metal detection device can be realized by editing the relevant instructions in advance through the single chip microcomputer. In addition, a voice player is also included, and a variety of voice command modules are stored inside the voice player, and the voice player is also connected to the single chip microcomputer.

[0040] At the same time, in this embodiment, the outward extension length of the first rack 31 and the second rack 32 in the telescopic mechanism can ensure that the two detection blocks 2 can be respectively moved from the bottom of the patient's outstretched arms and from the wrist to the armpit to perform metal detection on the inside of the patient's arm, thereby improving the comprehensiveness of the detection.

[0041] The specific implementation process is as follows: when performing metal detection, the patient comes to the door frame 1 and stands on the step 6. The pressure sensor on the step 6 transmits the signal to the single chip microcomputer, which immediately controls the two second motors to rotate clockwise, and controls all probes 21 and all ultrasonic sensors to start at the same time. The two detection blocks 2 first keep close to each other to detect the patient's head; then, when the ultrasonic sensor measures that the detection mechanism is close to the patient's shoulder, the single chip microcomputer controls the first motor to start, so that the two detection blocks 2 move away from each other, and in the process of moving away, the single chip microcomputer controls the voice player to issue a voice prompt of "Please spread your arms", and the patient spreads his arms. In the process of the two detection blocks 2 moving away from each other, the metal detection is first performed on the outside of the patient's arm, and then the single chip microcomputer controls the detection mechanism to move down a short distance, and the two detection blocks 2 move close to each other to perform metal detection on the inside of the patient's arm through the top probe 21.

[0042] Example 3

[0043] like Figure 6The metal detection device shown in the figure is based on the fact that the top of the detection block 2 of Example 2 is provided with a plurality of probes 21, and is different from Example 2 in that: the platform 6 is rotatably connected to the base 10, and also includes a lifting assembly, which includes a slider 41, an L-shaped connector 42 and a handle 4. The slider 41 is slidably connected in the second connection groove 13, one end of the L-shaped connector 42 is fixed to the slider 41, and the other end is fixed to the handle 4, and after the connection, the handle 4 is located below the slider 41. In this embodiment, two L-shaped connectors 42 and handles 4 are provided, distributed on the front and rear sides of the door frame 1, and the length of the L-shaped connector 42 can meet the requirement that the handle 4 does not contact the two detection blocks 2.

[0044] The bottom of the stepping platform 6 is connected with a third motor, specifically: a cavity is opened inside the base 10, the third motor is arranged in the cavity, a circular rotating groove is opened at the bottom of the cavity, a plurality of protrusions are evenly fixed along the circumference of the bottom of the stepping platform 6, and the protrusions are all slidably connected in the rotating groove. A transmission wheel is connected to the output shaft of the third motor, and a transmission belt is arranged between the transmission wheel and the bottom of the stepping platform 6 for connection. After the third motor is started, the stepping platform 6 can be driven to rotate through the transmission belt.

[0045] At the same time, the sliding connection of the slider 41 is as follows: the slider 41 is set to be in a mountain shape, the middle part of the mountain-shaped slider 41 is passed through the second connecting groove 13 and fixed on the return chain 7, and the two sides of the mountain-shaped slider 41 slide against the outer wall of the door frame 1 to achieve the purpose of limiting and improve the stability of the slider 41 in the process of sliding up and down. Before metal detection, when the connection box 33 is located at the top of the first connecting groove 12, the slider 41 is located at the bottom of the second connecting groove 13, and the slider 41 does not contact the limiting plate 34 on the connection box 33. The base 10 at both ends is provided with a receiving groove. When the slider 41 is located at the bottom of the second connecting groove 13, the handlebars 4 on both sides are located in the receiving groove to prevent the patient from being tripped by the handlebars 4 before entering the step 6.

[0046] The specific implementation process is: when the detection mechanism moves down to above the patient's shoulder, the single-chip microcomputer controls the voice player to issue a voice prompt "The platform 6 is about to rotate, please hold the handle 4 with both hands". At this time, the handle 4 just rises and moves to the middle and upper part of the door frame 1. Due to the instability of the rotation of the platform 6, the patient will actively hold the handle to stabilize the center of gravity, so that the patient can use his arms that are involuntarily extended to grasp the handle 4. At the same time, after the detection block 2 moves downward synchronously for a short distance, the two detection blocks 2 approach each other again to detect the metal in the hidden part of the extended arm, and further perform more comprehensive metal detection.

[0047] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Metal detection equipment, characterized in that: It includes a door frame and a detection mechanism, wherein both sides of the door frame are provided with slide grooves, and telescopic mechanisms are slidably connected in the slide grooves on both sides, and the telescopic mechanisms include a connecting box and a gear, a first rack and a second rack arranged inside the connecting box, the first rack and the second rack are respectively meshed with the two sides of the gear, and both ends of the first rack and the second rack are slidably connected to the connecting box; the detection mechanism includes two arc-shaped detection blocks distributed on both sides of the door frame, and a plurality of probes are provided on the inner side walls of the two detection blocks, wherein the two ends of one detection block are respectively connected to the first racks in the telescopic mechanisms on both sides by setting a first connecting block, and the two ends of the other detection block are respectively connected to the second racks in the telescopic mechanisms on both sides by setting a second connecting block; A plurality of probes are arranged on the top of the detection block, and the lengths of the first rack and the second rack in the telescopic mechanism can ensure that the two detection blocks can be moved horizontally from the wrist to the armpit under the patient's horizontally raised and stretched arms; It also includes a stepping platform, the top surface of which is located above the bottom of the slideway, and the stepping platform is located directly below the two detection blocks, and the stepping platform is rotatably arranged; The stepping platform plays a positioning role, ensuring that the patient can stand between the two detection blocks, and can also remind the patient to stay here; It also includes a lifting component, which includes a slider, an L-shaped connector and a handle. A second connecting groove is provided on the left side of the door frame. The slider is slidably connected in the second connecting groove. One end of the L-shaped connector is fixed to the slider, and the other end is fixed to the handle.

2. The metal detection device according to claim 1, characterized in that: A sliding mechanism is provided inside the door frame, and the sliding mechanism includes two driving sprockets, a plurality of steering sprockets and a return chain. The two driving sprockets are rotatably connected to the bottoms on both sides of the door frame, and the plurality of steering sprockets are rotatably connected to the tops on both sides of the door frame, and the return chain is engaged with all the driving sprockets and all the steering sprockets. First connecting grooves are provided in the door frames on both sides, and the connecting boxes in the slide grooves on both sides are respectively connected to the parts of the return chain that move in the same direction on both sides of the door frame through the first connecting grooves.

3. The metal detection device according to claim 2, characterized in that: Both ends of the connection box are provided with limiting plates, both ends of the limiting plates are extended to contact with the surface of the door frame, and both ends of the first rack and the second rack are extended to the outside of the limiting plates.

4. The metal detection device according to claim 3, characterized in that: It also includes a storage mechanism, which includes a storage box, a storage table, an inclined plate and a conveyor belt. The storage table is arranged next to the door frame, and the storage box is placed on the storage table. The inclined plate and the conveyor belt are both connected to the top of the storage table. An inclined surface is provided at the top of the storage table close to one end of the inclined plate, and a baffle is hinged at the lower end of the inclined surface. The baffle is connected to a switch, which is arranged on a side of the storage table close to the door frame. The switch controls the baffle to tilt toward the surface of the inclined plate, and the storage box slides along the surface of the inclined plate under the action of the inclined surface.

5. The metal detection device according to claim 4, characterized in that: The switch is a magnetic induction switch. A second connecting groove is provided on the side of the door frame close to the storage table. A magnet is connected to the return chain. When the connecting box moves to the bottom of the first connecting groove, the magnet moves to contact the magnetic induction switch.

6. The metal detection device according to claim 5, characterized in that: A number of ultrasonic sensors are also installed on both sides of the bottom of the two detection blocks.

7. The metal detection device according to claim 6, characterized in that: It also includes an automatic control system, which includes a single-chip microcomputer. A pressure sensor is installed inside the step platform. The gears are connected to the first motor, the active sprockets are connected to the second motor, and all probes, all ultrasonic sensors, pressure sensors, the first motor and the second motor are connected to the single-chip microcomputer.

8. The metal detection device according to claim 7, characterized in that: The step platform is connected with a third motor, and the third motor is connected with the single chip microcomputer.

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