Portable handheld X-ray fluorescence spectrometer

Abstract

The invention relates to the technical field of handheld spectrometers, in particular to a portable handheld X fluorescence spectrometer. Comprising a handle, the handle is fixedly connected with a shell, the shell is provided with a detection part and a display screen, the detection part is used for detecting a detected object, a sliding groove is formed in the side, away from the shell, of the handle, a sliding block is slidably connected into the sliding groove of the handle, and an anti-falling rope is wound around the sliding block. A first tension spring is fixedly connected between the sliding block and the handle, and a protection assembly is arranged on the shell and used for reducing damage to the detection part when the shell slides down. In the process that the spectrograph is shaken, the sliding block is driven by the anti-falling rope to slide, the sliding block pulls the first tension spring, and the hard tension between the anti-falling rope and the sliding block is changed, so that the probability that the joint between the anti-falling rope and the sliding block is broken is reduced, and the probability that the detection part is damaged is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of handheld spectrometers, and in particular to a portable handheld X-ray fluorescence spectrometer. Background Art

[0002] A handheld X-ray fluorescence spectrometer is a spectroscopic analysis instrument based on X-ray fluorescence spectroscopic analysis technology. It emits X-rays to excite atoms in the sample, causing them to produce characteristic X-ray fluorescence signals that are captured by the detector. When workers need to use the spectrometer outdoors to detect objects, they need to move the handheld spectrometer around the object to detect different positions of the object. During this process, if the worker slips due to the external environment and loses balance, the worker will subconsciously look for a support point, causing the spectrometer to easily separate from the hand and be thrown out. Although existing spectrometers are equipped with an anti-slip rope to maintain its connection with the hand, the spectrometer lacks effective support during the swinging process, causing the connection of the anti-slip rope to bear all the force generated by the swinging and easily break. This will cause the spectrometer to flip over again after contacting the ground, increasing the risk of equipment damage and affecting the normal service life of the spectrometer. Summary of the invention

[0003] The invention provides a portable handheld X-ray fluorescence spectrometer, in order to overcome the disadvantage that the pull rope of the existing spectrometer is rigidly connected and is easily broken during the process of the spectrometer falling off, resulting in the spectrometer rolling and being damaged multiple times after falling to the ground.

[0004] The technical solution of the present invention is: a portable handheld X-ray fluorescence spectrometer, comprising a handle, the handle is fixedly connected to a shell, the shell is provided with a detection part and a display screen, the detection part is used to detect the detection object, a slide groove is provided on the side of the handle away from the shell, a sliding block is slidably connected in the slide groove of the handle, an anti-drop rope is wound around the sliding block, a first tension spring is fixedly connected between the sliding block and the handle, and a protective component is provided on the shell, and the protective component is used to reduce the damage to the detection part when the shell slides off.

[0005] Further description, the protection component includes a U-shaped shell, which is arranged on the shell, and a symmetrically distributed sliding frame is slidably connected in the shell, and the symmetrically distributed sliding frames are fixedly connected with airbags. The symmetrically distributed airbags are respectively used to protect the detection part and the display screen on the shell, and a second tension spring is fixedly connected between the sliding frame and the shell, a support component is arranged on the airbag, and the support component is used to limit the expansion range of the airbag, and a fixing component is arranged on the shell, and the fixing component is used to limit the position of the sliding frame.

[0006] Further description, the support assembly includes a plurality of spaced-apart connecting frames, each of which is disposed on adjacent airbags, the connecting frames limiting the shape of the airbags after expansion, the connecting frames consisting of a plurality of first connecting plates and a plurality of second connecting plates, the plurality of first connecting plates and the plurality of second connecting plates being staggered, a guide assembly being disposed between adjacent connecting frames, the guide assembly being used to adjust the angle between adjacent connecting frames.

[0007] Further description, the guide assembly includes a plurality of ball head rods, and the plurality of ball head rods are respectively fixed to the adjacent first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate are both fixed with ring head rods, and the ball head rods are located on the moving path of the adjacent ring head rods.

[0008] Further description: the ball head rod and the ring head rod are both arc-shaped, and the radii of the corresponding circles of the two are the same.

[0009] Further description, the fixed component includes a limiting frame, which is slidably connected to the shell, and the symmetrically distributed sliding frames are all slidably connected to the limiting frame, and the limiting frame is used to limit the position of the sliding frame. A first spring is fixed between the limiting frame and the shell, and a detection component is provided on the handle, and the detection component is used to drive the limiting frame to move.

[0010] Further description, the detection assembly includes a rotating plate, which is rotatably connected to the handle, a torsion spring is fixed between the rotating plate and the handle, a pull rope is fixed between the rotating plate and the limit frame, and the rotating plate drives the limit frame to move through the pull rope. A limiting assembly is provided on the sliding block, and the limiting assembly is used to limit the rotation angle of the rotating plate.

[0011] Further description, the limit assembly includes an elastic telescopic rod, the fixed part of the elastic telescopic rod is fixed to the sliding block, the telescopic part of the elastic telescopic rod is fixed to the limit rod, the limit rod is slidably connected to the handle, the rotating plate is fixed with an arc frame, the arc frame is slidably connected to the handle, and the limit rod is located on the moving path of the arc frame.

[0012] Further description, it also includes a locking component, which is arranged on the handle, and the locking component is used to limit the moving distance of the telescopic part of the elastic telescopic rod. The locking component includes a limiting plate, and the limiting plate is slidably connected to the handle. The limiting plate is located on the moving path of the rotating plate, and a damping is arranged between the limiting plate and the handle. A second spring is fixed between the limiting plate and the handle, and the limiting plate is provided with a limiting hole. The telescopic part of the elastic telescopic rod is located in the limiting hole of the limiting plate and slides. The telescopic part of the elastic telescopic rod is fixed with a positioning ring, and the limiting plate is located on the moving path of the positioning ring.

[0013] It is further explained that the width of the upper limit hole on the limit plate gradually increases from the side away from the rotating plate to the other side thereof.

[0014] The present invention has the following advantages: 1. When the spectrometer is swung, the anti-slip rope drives the sliding block to slide, so that the sliding block pulls the first tension spring, changes the hard pulling force between the anti-slip rope and the sliding block, thereby reducing the probability of breakage at the connection between the anti-slip rope and the sliding block, thereby reducing the probability of damage to the detection part.

[0015] 2. During the falling process, the present invention pops out the airbag to cover the detection part, and uses the ball head rod and the ring head rod to adjust the shape of the airbag so that the airbag wraps the detection part, reducing the impact force on the tight part of the device when it falls to the ground, thereby reducing the damage to the device.

[0016] 3. The present invention limits the elastic telescopic rod by means of a limit plate and a positioning ring, so as to prevent the limit rod from contacting the limit of the arc frame after the anti-drop rope is accidentally touched, causing the airbag to expand and affecting the normal use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the sliding block, the anti-drop rope and the first tension spring of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the sliding frame, the airbag and the second tension spring of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the airbag, the first connecting plate and the second connecting plate of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the sliding frame, the limiting frame and the first spring of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the first connecting plate, the ball head rod and the ring head rod of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the torsion spring, the elastic telescopic rod and the arc frame of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the limit plate, the second spring and the positioning ring of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the limiting plate and the positioning ring of the present invention; Fig.10 It is a three-dimensional structural cross-sectional view of the rotating plate and the arc frame of the present invention.

[0018] The marks in the accompanying drawings are as follows: 1-handle, 2-shell, 3-detection part, 4-sliding block, 5-anti-slip rope, 6-first tension spring, 7-U-shaped shell, 8-sliding frame, 9-airbag, 10-second tension spring, 11-connecting frame, 12-first connecting plate, 13-second connecting plate, 14-ball head rod, 15-ring head rod, 16-limiting frame, 17-first spring, 18-rotating plate, 19-torsion spring, 20-pull rope, 21-elastic telescopic rod, 23-limiting rod, 24-arc frame, 25-limiting plate, 26-second spring, 27-positioning ring. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0020] A portable handheld X-ray fluorescence spectrometer, such as Figure 1 , Figure 2 and Figure 7-Figure 9 As shown, it includes a handle 1, the handle 1 is fixedly connected to a shell 2, the shell 2 is provided with a detection part 3 and a display screen, the detection part 3 is used to detect the detection object, a slide groove is provided on the side of the handle 1 away from the shell 2, a sliding block 4 is slidably connected in the slide groove of the handle 1, an anti-drop rope 5 is wound around the sliding block 4, a first tension spring 6 is fixedly connected between the sliding block 4 and the handle 1, and a protective component is provided on the shell 2, and the protective component is used to reduce the damage to the detection part 3 when the shell 2 slides.

[0021] The above scheme is used to solve the problem that when the staff falls, the handheld spectrometer is easy to slip from the staff's hands and the anti-slip rope 5 is subjected to a hard pulling force, causing the connection between the anti-slip rope 5 and the handle 1 to break, resulting in the spectrometer rolling over and being damaged multiple times after contacting the ground; the handle 1 is provided with a battery installation slot for placing batteries, and the device is equipped with a storage box for long-term storage of the device. The storage box contains replaceable parts of the device. The handle 1 is provided with an anti-slip pad to reduce the probability of sliding during the use of the device. The detection part 3 and the display screen on the shell 2 are both existing devices, and their specific structures and usage functions and methods are no longer described in detail. The detection part 3 is used to detect the detection object, the slide groove is located at the lower part of the handle 1, and the direction of the slide groove on the handle 1 is in the up and down direction, which is used to enable the sliding block 4 to slide up and down, and buffer the force at the connection between the sliding block 4 and the anti-slip rope 5. The first tension spring 6 is used to drive the sliding block 4 to move upward and reset.

[0022] Further, such as Figure 2-Figure 5 As shown, the protection component includes a U-shaped shell 7, which is arranged on the shell 2. A symmetrically distributed sliding frame 8 is slidably connected in the shell 2. The symmetrically distributed sliding frames 8 are all fixedly connected with airbags 9. The symmetrically distributed airbags 9 are respectively used to protect the detection part 3 and the display screen on the shell 2. A second tension spring 10 is fixedly connected between the sliding frame 8 and the shell 2. A supporting component is arranged on the airbag 9, and the supporting component is used to limit the expansion range of the airbag 9. A fixing component is arranged on the shell 2, and the fixing component is used to limit the position of the sliding frame 8.

[0023] The above scheme is used to alleviate the damage caused by the airbag 9 when the spectrometer falls; the U-shaped shell 7 is used to cover and limit the airbag 9 so that the airbag 9 does not affect the normal use of the spectrometer. In this embodiment, the U-shaped shell 7 is clamped on the shell 2 by a clamping block, so that the airbag 9 can lift up the U-shaped shell 7 after expansion. In this embodiment, there are two sliding frames 8 in the shell 2. The airbag 9 is an existing device and can be triggered by a pressure sensor. It automatically inflates by generating gas through a chemical reaction. After the airbag 9 is expanded, it is used to wrap the display screen and the detection part 3 on the shell 2 to reduce the damage caused by the detection part 3 and the display screen on the shell 2. Initially, the second tension spring 10 is in a stretched state and is used to drive the sliding frame 8 to move.

[0024] Further, such as Figure 3-Figure 6 As shown, the support assembly includes a plurality of spaced-apart connecting frames 11, and the plurality of connecting frames 11 are all disposed on adjacent airbags 9. The connecting frames 11 limit the shape of the airbags 9 after expansion. The connecting frames 11 are composed of a plurality of first connecting plates 12 and a plurality of second connecting plates 13, and the plurality of first connecting plates 12 and the plurality of second connecting plates 13 are staggered. A guide assembly is commonly disposed between adjacent connecting frames 11, and the guide assembly is used to adjust the angle between adjacent connecting frames 11.

[0025] Further, such as Figure 6 As shown, the guide assembly includes a plurality of ball head rods 14, which are respectively fixed to the adjacent first connecting plates 12 and the second connecting plates 13. The first connecting plates 12 and the second connecting plates 13 are both fixed with ring head rods 15, and the ball head rods 14 are located on the moving path of the adjacent ring head rods 15.

[0026] Further, such as Figure 6 As shown, the ball head rod 14 and the ring head rod 15 are both arc-shaped, and the radii of the corresponding circles of the two are the same.

[0027] The above scheme is used to adjust the shape of the airbag 9 after expansion, so that the airbag 9 wraps the detection part 3 and the display screen; the first connecting plate 12 and the second connecting plate 13 are both made of elastic material and are used to limit the shape of the airbag 9. During the expansion of the airbag 9, the first connecting plate 12 and the second connecting plate 13 can be deformed. In this embodiment, the connecting frame 11 includes three first connecting plates 12 and two second connecting plates 13, and the number of the three first connecting plates 12 and the two second connecting plates 13 can be adjusted according to actual conditions. The three first connecting plates 12 and the two second connecting plates 13 are distributed at intervals. In this embodiment, the first connecting plates 12 on the front and rear sides are both aligned with the edges of the adjacent airbags 9. The edges are fixed, and the ball head rod 14 and the ring head rod 15 are used to limit the relative movement distance of adjacent connecting frames 11. When in use, the angle between two adjacent connecting frames 11 changes through the relative movement of the ball head rod 14 and the ring head rod 15. The bending directions of the ball head rod 14 and the ring head rod 15 are both toward the horizontal center line of the shell 2, so that the airbag 9 gradually bends toward the direction of the shell 2 and fits the position to be protected. In actual use, the number of rings on the ring head rod 15 can be set to multiple to increase the contact area between it and the ball head rod 14, so that the ring head rod 15 and the ball head rod 14 remain relatively stable during the relative sliding process.

[0028] Further, such as Figure 4 and Figure 5 As shown, the fixed component includes a limit frame 16, which is slidably connected to the shell 2, and the symmetrically distributed sliding frames 8 are all slidably connected to the limit frame 16. The limit frame 16 is used to limit the position of the sliding frame 8. A first spring 17 is fixed between the limit frame 16 and the shell 2. A detection component is provided on the handle 1, and the detection component is used to drive the limit frame 16 to move.

[0029] Further, such as Figure 3 , Figure 4 , Figure 7 and Fig.10As shown, the detection assembly includes a rotating plate 18, which is rotatably connected to the handle 1, a torsion spring 19 is fixedly connected between the rotating plate 18 and the handle 1, a pull rope 20 is fixedly connected between the rotating plate 18 and the limit frame 16, and the rotating plate 18 drives the limit frame 16 to move through the pull rope 20. A limit assembly is provided on the sliding block 4, and the limit assembly is used to limit the rotation angle of the rotating plate 18.

[0030] The above scheme provides a scheme for detecting whether the spectrometer falls; in this embodiment, there are two limit frames 16, which are respectively located on the front and rear sides of the shell 2, and are used to fix the sliding frame 8 at multiple points. The limit frame 16 is composed of a horizontal plate and two round rods. A blind hole is provided in the sliding frame 8. The round rod on the limit frame 16 limits the sliding frame 8 through the blind hole. The round rod on the limit frame 16 is a hemispherical head, which is used to facilitate its entry into the blind hole of the sliding frame 8. The limit frame 16 is slidably connected to the shell 2, and the symmetrically distributed sliding frames 8 are all slidably connected to the limit frame 16. The first spring 17 is used to push the limit frame 16 to move and reset. The first spring 17 is always in a compressed state, which is used to keep the position of the limit frame 16 stable. Initially, there is an angle between the rotating plate 18 and the vertical plane, and the torsion spring 19 is in a force storage state, which is used to drive the rotating plate 18 to rotate counterclockwise to a larger angle ( Figure 1 , thus looking from front to back), the drawstring 20 is in a relaxed state.

[0031] Further, such as Figure 7 , Figure 8 and Fig.10 As shown, the limit assembly includes an elastic telescopic rod 21, the fixed part of the elastic telescopic rod 21 is fixed to the sliding block 4, the telescopic part of the elastic telescopic rod 21 is fixed to the limit rod 23, the limit rod 23 is slidably connected to the handle 1, the rotating plate 18 is fixed to an arc frame 24, the arc frame 24 is slidably connected to the handle 1, and the limit rod 23 is located on the moving path of the arc frame 24.

[0032] The above scheme is used to provide a scheme for limiting the rotation angle of the rotating plate 18; the elastic telescopic rod 21 is an existing device, and its internal structure will not be described in detail. Initially, the telescopic part of the elastic telescopic rod 21 is in a retracted state, and a notch is provided at the lower part of the arc frame 24 to allow the limiting rod 23 to pass through the arc frame 24, and the width of the notch on the arc frame 24 is greater than the diameter of the limiting rod 23, so that the limiting rod 23 can move downward and pass through the arc frame 24 normally. The limiting rod 23 limits the rotating plate 18 through the arc frame 24, thereby limiting the maximum angle at which the rotating plate 18 can rotate.

[0033] Working process: When using the device, the staff will put the anti-drop rope 5 on the right wrist (taking the right hand holding the device as an example), and then the staff will hold the handle 1 and the rotating plate 18 and apply force. The rotating plate 18 will rotate clockwise after receiving the force ( Figure 1, viewed from the front), the rotating plate 18 drives the arc frame 24 to rotate and causes the torsion spring 19 to store force, until the rotating plate 18 is parallel to the handle 1, the rotating plate 18 stops rotating, at this time the limit rod 23 is located at the notch of the arc frame 24, and then the staff brings the detection part 3 close to the object to be detected for detection. After the detection is completed, the staff reduces the grip force on the handle 1 and the rotating plate 18, so that the torsion spring 19 drives the rotating plate 18 to reset in the opposite direction, until the left part of the arc frame 24 contacts the limit rod 23 again, the rotating plate 18 stops rotating and completes the reset. After the detection is completed, the staff places the device in the storage box for storage.

[0034] During the above-mentioned process of testing the object to be tested, if the worker loses balance and the device is separated from his hand, the force on the rotating plate 18 is reduced, and the torsion spring 19 drives the rotating plate 18 to rotate counterclockwise again. At this time, the left part of the arc frame 24 has not yet contacted the limit rod 23. At the same time, since the anti-slip rope 5 is wrapped around the wrist, the anti-slip rope 5 pulls the sliding block 4 (the pulling force is the centrifugal force generated during the swinging of the device), and the sliding block 4 drives the elastic telescopic rod 21 to move downward and stretch the first tension spring 6. The telescopic part of the elastic telescopic rod 21 drives the limit rod 23 to move downward and move out from the notch of the arc frame 24 until the lower side of the sliding block 4 contacts the handle 1, the sliding block 4 and its parts stop moving, the limit rod 23 stops moving downward and releases the limit on the arc frame 24 (that is, the limit rod 23 moves away from the swinging path of the arc frame 24).

[0035] In the process of the rotating plate 18 driving the arc frame 24 to swing in the opposite direction, when the rotating plate 18 moves to the initial state, the limiting rod 23 no longer limits the arc frame 24. At this time, the rotating plate 18 continues to drive the arc frame 24 to swing and pull the pull rope 20, so that the pull rope 20 changes from a relaxed state to a tightened state. At the same time, the rotating plate 18 pulls the limiting frame 16 downward through the pull rope 20. The limiting frame 16 moves downward and gradually separates from the adjacent sliding frame 8 and compresses the first spring 17. Until the first spring 17 can no longer be compressed, the limiting frame 16 stops moving downward and releases the limit on the sliding frame 8. At this time, the torsion spring 19 no longer drives the rotating plate 18 to swing.

[0036] After the above-mentioned limit frame 16 releases the limit on the sliding frame 8, the second tension spring 10 pulls the sliding frame 8 and the parts thereon to move, so that the two sliding frames 8 move away from each other. The following takes the moving direction of the left sliding frame 8 and the parts thereon as an example. As the sliding frame 8 moves, the airbag 9 is subjected to pressure and the internal chemical substances react to produce gas. The airbag 9 expands and squeezes the U-shaped shell 7, so that the U-shaped shell 7 is separated from the shell 2 under the squeezing of the airbag 9. The airbag 9 continues to expand and move to the outside of the shell 2. During this process, the second tension spring 10 continuously drives the sliding frame 8 to move to the left, so that the sliding frame 8 drives the airbag 9 and the parts thereon to move to the left, so that the inflated airbag 9 squeezes the adjacent position of the shell 2 and moves to its outside, so that the airbag 9 moves to the left with the sliding frame 8 to gradually wrap the detection part 3.

[0037] During the above-mentioned expansion process of the airbag 9, the front and rear lengths of the airbag 9 increase, causing the first connecting plate 12 and the adjacent second connecting plate 13 to move relative to each other. At the same time, the shapes of the first connecting plate 12 and the second connection limit the shape of the airbag 9 after expansion, so that the airbag 9 is U-shaped and wraps the detection part 3. At the same time, after the airbag 9 is expanded, its left and right lengths increase, so that the left connecting frame 11 drives the ring head rod 15 thereon to move left relative to the ball head rod 14 on the right connecting frame 11. Under the joint action of the ball head rod 14 and the ring head rod 15, the left part of the airbag 9 gradually bends downward, so that the airbag 9 fits the adjacent position of the detection part 3, and improves the wrapping effect of the airbag 9 on the detection part 3, thereby improving the protection effect of the detection part 3, until the airbag 9 stops expanding and the airbag 9 completes the wrapping of the detection part 3.

[0038] As the device continues to fall, when the airbag 9 contacts the ground, the airbag 9 cushions the position of its detection part 3 to reduce damage to the device. At this time, the pulling force on the sliding block 4 is reduced, and the first tension spring 6 drives the sliding block 4 to move upward and reset.

[0039] After the staff member stands up, the staff member takes out the spare airbag 9 in the storage box and replaces the used airbag 9 with it. Then the staff member pushes the sliding frame 8 to move, so that the sliding frame 8 drives the parts on it to reset and stretch the second tension spring 10. After the sliding frame 8 is reset, the staff member pulls the sliding block 4, so that the sliding block 4 drives the limiting rod 23 to move downward and stretch the first tension spring 6. At the same time, the staff member presses the rotating plate 18 again, so that the rotating plate 18 drives the arc frame 24 to rotate clockwise and the torsion spring 19 accumulates force. Until the rotating plate 18 stops rotating, the staff member stops pulling the sliding block 4, and the first tension spring 6 drives the limiting rod 23 to reset and limit the arc frame 24 again through the sliding block 4. During the process again, the tension on the pull rope 20 is reduced, and the tension of the pull rope 20 on the limiting frame 16 is reduced. The first spring 17 pushes the limiting frame 16 to reset and limit the sliding frame 8 again. Then the staff clamps the U-shaped shell 7 on the shell 2 again to complete the reset. After the detection is completed, the staff puts the device into the storage box for storage.

[0040] Further, such as Figure 7-Figure 9 As shown, it also includes a positioning component, which is arranged on the handle 1. The positioning component is used to limit the moving distance of the telescopic part of the elastic telescopic rod 21. The positioning component includes a limiting plate 25, which is slidably connected to the handle 1. The limiting plate 25 is located on the moving path of the rotating plate 18. Damping is arranged between the limiting plate 25 and the handle 1. A second spring 26 is fixed between the limiting plate 25 and the handle 1. The limiting plate 25 is provided with a limiting hole. The telescopic part of the elastic telescopic rod 21 is located in the limiting hole of the limiting plate 25 and slides. The telescopic part of the elastic telescopic rod 21 is fixed with a positioning ring 27, and the limiting plate 25 is located on the moving path of the positioning ring 27.

[0041] Further, such as Figure 7-Figure 9 As shown, the width of the upper limit hole of the limit plate 25 gradually increases from the side away from the rotating plate 18 to the other side thereof.

[0042] The above scheme provides a way to prevent the sliding block 4 from being accidentally touched and causing the rotating plate 18 to rotate; the limit plate 25 is used to limit the movement of the telescopic part of the elastic telescopic rod 21, and the damping of the handle 1 and the limit plate 25 is used to slow down the speed of the limit plate 25 returning to its original position, so that the positioning ring 27 has enough time to pass through the limit plate 25. Initially, the second spring 26 is in a compressed state, and the limit hole of the limit plate 25 consists of two circular holes with a larger diameter and a smaller diameter, and the circular hole with a smaller diameter is located on the left part of the upper limit hole of the limit plate 25, so that the positioning ring 27 can move downward through the limit plate 25 after the limit plate 25 moves to the left (the axis of the circular hole on the right side of the limit plate 25 is coaxial with the axis of the positioning ring 27). Initially, the lower side of the positioning ring 27 contacts the limit plate 25, so as to keep the position of the telescopic part of the elastic telescopic rod 21 stable.

[0043] Workflow: When the above-mentioned staff uses the device, the staff holds the handle 1 and the rotating plate 18, and brings the handle 1 and the rotating plate 18 close to each other, and the rotating plate 18 rotates clockwise relative to the handle 1 ( Figure 1, viewed from the front to the back), the rotating plate 18 drives the arc frame 24 to rotate synchronously, until the rotating plate 18 contacts the limit plate 25, the rotating plate 18 pushes the limit plate 25 to move to the left, the limit plate 25 moves and compresses the adjacent second spring 26, until the rotating plate 18 rotates to be parallel to the vertical plane, the rotating plate 18 stops moving, the limit plate 25 and the arc frame 24 both stop moving, at this time the positioning ring 27 is located in the area to the right of the upper limit hole of the limit plate 25, the limit rod 23 is located in the notch on the arc frame 24, so that the positioning ring 27 can pass through the limit hole The limiting hole on the plate 25, when the staff does not hold the handle 1 and the rotating plate 18, the circular hole with a smaller diameter of the upper limit hole on the limiting plate 25 is located below the positioning ring 27, so that the positioning ring 27 cannot pass through the limiting plate 25. If the staff pulls the anti-drop rope 5 downward due to accidental touch at this time, the anti-drop rope 5 drives the sliding block 4 to move downward, and the positioning ring 27 is limited by the limiting plate 25, so that the telescopic end of the elastic telescopic rod 21 does not move. At this time, the limiting rod 23 will not release the limit on the arc frame 24, thereby avoiding the expansion of the airbag 9 and affecting the normal use of the device.

[0044] When the staff member falls, the handle 1 is separated from the staff member's hand and thrown out, and the torsion spring 19 drives the rotating plate 18 to swing back and reset, and the rotating plate 18 drives the arc frame 24 to swing back and reset, the squeezing force of the rotating plate 18 on the limit plate 25 is reduced, and the limit plate 25 slowly resets under the joint action of the damping and the second spring 26, so that the positioning ring 27 has enough time to pass through the limit hole of the limit plate 25, at this time, the rotating plate 18 is separated from the limit plate 25, and the anti-drop rope 5 pulls the sliding block 4 to move downward, and the sliding block 4 drives the elastic telescopic rod 21 to move downward and By stretching the first tension spring 6, the telescopic part of the elastic telescopic rod 21 drives the positioning ring 27 and the limit rod 23 to move downward, so that the limit rod 23 releases the limit on the arc frame 24, and the rotating plate 18 continues to rotate and pulls the limit frame 16 through the pull rope 20, so that the limit frame 16 releases the limit on the sliding frame 8, so that the airbag 9 repeats the above process and pops out to protect the device. When the positioning ring 27 passes through the limit hole of the limit plate 25, the limit plate 25 continues to reset under the push of the second spring 26 until the limit plate 25 can no longer move, and the limit plate 25 completes the reset.

[0045] After picking up the device, the staff repeats the above process to replace the airbag 9, and then the staff presses the rotating plate 18 to make the rotating plate 18 repeat the above process to squeeze the limit plate 25. When the right area of ​​the upper limit hole of the limit plate 25 is coaxial with the positioning ring 27, the first tension spring 6 drives the sliding block 4 to move upward and reset, so that the elastic telescopic rod 21 drives the limit rod 23 to enter the arc frame 24 again to complete the reset, and then the rotating plate 18 is released to reset the device.

[0046] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A portable handheld X-ray fluorescence spectrometer, characterized in that: The invention comprises a handle (1), wherein the handle (1) is fixedly connected to a shell (2), the shell (2) is provided with a detection part (3) and a display screen, the detection part (3) is used to detect a detection object, a sliding groove is provided on a side of the handle (1) away from the shell (2), a sliding block (4) is slidably connected in the sliding groove of the handle (1), an anti-drop rope (5) is wound around the sliding block (4), a first tension spring (6) is fixedly connected between the sliding block (4) and the handle (1), and a protective component is provided on the shell (2), the protective component is used to reduce damage to the detection part (3) when the shell (2) slides off; The protection component comprises a U-shaped shell (7), the U-shaped shell (7) being arranged on the shell (2), the shell (2) being slidably connected with symmetrically distributed sliding frames (8), the symmetrically distributed sliding frames (8) being fixedly connected with airbags (9), the symmetrically distributed airbags (9) being respectively used to protect the detection part (3) and the display screen on the shell (2), a second tension spring (10) being fixedly connected between the sliding frame (8) and the shell (2), the airbag (9) being provided with a support component, the support component being used to limit the expansion range of the airbag (9), and the shell (2) being provided with a fixing component, the fixing component being used to limit the position of the sliding frame (8).

2. A portable handheld X-ray fluorescence spectrometer according to claim 1, characterized in that: The support assembly comprises a plurality of spaced-apart connecting frames (11), the plurality of connecting frames (11) being arranged on adjacent airbags (9), the connecting frames (11) limiting the shape of the airbags (9) after expansion, the connecting frames (11) comprising a plurality of first connecting plates (12) and a plurality of second connecting plates (13), the plurality of first connecting plates (12) and the plurality of second connecting plates (13) being arranged in a staggered manner, and a guide assembly being arranged between adjacent connecting frames (11), the guide assembly being used to adjust the angle between adjacent connecting frames (11).

3. A portable handheld X-ray fluorescence spectrometer according to claim 2, characterized in that: The guide assembly comprises a plurality of ball head rods (14), wherein the plurality of ball head rods (14) are respectively fixedly connected to the adjacent first connecting plate (12) and the second connecting plate (13), and the first connecting plate (12) and the second connecting plate (13) are both fixedly connected to a ring head rod (15), and the ball head rod (14) is located on a moving path of the adjacent ring head rod (15).

4. A portable handheld X-ray fluorescence spectrometer according to claim 3, characterized in that: The ball head rod (14) and the ring head rod (15) are both arc-shaped, and the radii of the circles corresponding to the two are the same.

5. The portable handheld X-ray fluorescence spectrometer according to claim 1, characterized in that: The fixing assembly comprises a limit frame (16), the limit frame (16) is slidably connected to the shell (2), the symmetrically distributed sliding frames (8) are all slidably connected to the limit frame (16), the limit frame (16) is used to limit the position of the sliding frame (8), a first spring (17) is fixedly connected between the limit frame (16) and the shell (2), and a detection assembly is arranged on the handle (1), and the detection assembly is used to drive the limit frame (16) to move.

6. A portable handheld X-ray fluorescence spectrometer according to claim 5, characterized in that: The detection assembly comprises a rotating plate (18), the rotating plate (18) being rotatably connected to the handle (1), a torsion spring (19) being fixedly connected between the rotating plate (18) and the handle (1), a pull rope (20) being fixedly connected between the rotating plate (18) and the limit frame (16), the rotating plate (18) driving the limit frame (16) to move via the pull rope (20), and a limit assembly being arranged on the sliding block (4), the limit assembly being used to limit the rotation angle of the rotating plate (18).

7. A portable handheld X-ray fluorescence spectrometer according to claim 6, characterized in that: The limiting assembly comprises an elastic telescopic rod (21), a fixed portion of the elastic telescopic rod (21) is fixedly connected to the sliding block (4), a telescopic portion of the elastic telescopic rod (21) is fixedly connected to a limiting rod (23), the limiting rod (23) is slidably connected to the handle (1), the rotating plate (18) is fixedly connected to an arc frame (24), the arc frame (24) is slidably connected to the handle (1), and the limiting rod (23) is located on a moving path of the arc frame (24).

8. The portable handheld X-ray fluorescence spectrometer according to claim 7, characterized in that: The invention also comprises a positioning assembly, which is arranged on the handle (1) and is used to limit the moving distance of the telescopic portion of the elastic telescopic rod (21). The positioning assembly comprises a limiting plate (25), which is slidably connected to the handle (1). The limiting plate (25) is located on the moving path of the rotating plate (18). A damping is arranged between the limiting plate (25) and the handle (1). A second spring (26) is fixedly connected between the limiting plate (25) and the handle (1). The limiting plate (25) is provided with a limiting hole. The telescopic portion of the elastic telescopic rod (21) is located in the limiting hole of the limiting plate (25) and slides. The telescopic portion of the elastic telescopic rod (21) is fixedly connected to a positioning ring (27). The limiting plate (25) is located on the moving path of the positioning ring (27).

9. A portable handheld X-ray fluorescence spectrometer according to claim 8, characterized in that: The width of the upper limit hole of the limit plate (25) gradually increases from the side away from the rotating plate (18) to the other side thereof.

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