Metal detector convenient for controlling ground clearance

Abstract

The invention relates to the technical field of metal detectors, in particular to a metal detector convenient to control ground clearance, which comprises a support shell; the detecting instrument body is detachably connected with the supporting shell; the retractable moving units are arranged on the inner side of the supporting shell, are symmetrically arranged and are connected with the supporting shell; the plug-in type control unit is in plug-in connection with the retractable type moving unit; wherein the retractable moving unit comprises a plug-in transmission assembly, a pressure adjusting assembly and a trundle assembly, the retractable moving unit is arranged and matched with the plug-in control unit, so that the distance between the detector body and the ground can be flexibly adjusted, and rapid disassembly and assembly of equipment can be realized; and automatic folding and unfolding of the trundle assembly can be achieved in the dismounting and mounting process, great convenience is provided for storage of the equipment, and the safety and convenience of the equipment in the using process are enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of metal detectors, in particular to a metal detector which is convenient for controlling the distance from the ground. Background Art

[0002] A metal detector is a device that uses electromagnetic induction to detect the presence of metal. There are three sets of coils distributed inside the metal detector, namely the central transmitting coil and two equal receiving coils. The oscillator connected to the middle transmitting coil generates a high-frequency variable magnetic field. In the idle state, the induced voltages of the receiving coils on both sides cancel each other out before the magnetic field is disturbed, and reach a balanced state. Once metal impurities enter the magnetic field area, the magnetic field is disturbed, and this balance is broken. The induced voltages of the two receiving coils cannot be offset. The unoffset induced voltage is amplified and processed by the control system, and an alarm signal is generated to detect metal impurities.

[0003] Since metal detectors are mostly used outdoors, they often work in forests and mountains, and the height of the existing detector disc cannot be adjusted, which causes the disc to collide with stones and debris on the bottom during detection, easily causing damage to the metal detector detection disc. Therefore, in view of the above situation, it is urgent to develop a metal detector that is easy to control the distance from the ground to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a metal detector which is convenient for controlling the distance from the ground, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A metal detector that is convenient for controlling the distance from the ground, comprising:

[0007] Support shell;

[0008] A detector body, the detector body is detachably connected to the supporting shell and is used to detect underground metal;

[0009] A retractable movable unit, the retractable movable unit is arranged inside the supporting shell, is symmetrically arranged, and is connected to the supporting shell;

[0010] An insertable control unit, which is plugged into the retractable movable unit and is used to expand the retractable movable unit when inserted, and to drive the retractable movable unit to adjust the distance between the detector body and the ground;

[0011] Among them, the retractable mobile unit includes: a plug-in transmission assembly, a pressure adjustment assembly and a caster assembly. The caster assembly is symmetrically arranged on the inner side of the supporting shell and is rotatably connected to the supporting shell. The plug-in transmission assembly is fixedly connected to the supporting shell, connected to the caster assemblies on both sides, and connected to the plug-in control unit, and cooperates with the plug-in control unit to realize the retraction and extension of the caster assembly. One end of the pressure adjustment assembly is connected to the caster assembly, and the other end is connected to the plug-in control unit after plugging, and is used to cooperate with the plug-in control unit to drive the unfolded caster assembly to adjust the distance between the detector body and the ground.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the device is running, after the plug-in control unit and the plug-in transmission assembly are plugged in, the plug-in transmission assembly drives the caster assemblies on both sides to unfold, and the caster assemblies extend from the inner side of the supporting shell to complete the support of the supporting shell. After the plug-in control unit is plugged in, it can also drive the pressure regulating assembly, and the pressure regulating assembly can drive the unfolded moving assembly to realize the lifting and lowering of the supporting shell, thereby adjusting the distance between the detector body and the ground. Compared with the prior art in which the height of the detector disc cannot be adjusted, the detection disc will collide with stones and debris on the bottom surface during detection, which may easily cause damage to the metal detector detection disc. By setting a retractable moving unit and cooperating with the plug-in control unit, not only can the distance between the detector body and the ground be flexibly adjusted, but also the equipment can be quickly disassembled and assembled, and the caster assembly can be automatically retracted and extended during the disassembly and assembly process, which provides great convenience for the storage of the equipment and enhances the safety and convenience of the equipment when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a metal detector for facilitating control of the distance from the ground.

[0015] Figure 2 A cross-sectional view of a metal detector for ease of controlling the distance from the ground.

[0016] Figure 3 A schematic diagram of the structure of a retractable mobile unit in a metal detector for facilitating control of the distance from the ground.

[0017] Figure 4 A schematic diagram of the structure of the plug-in transmission assembly in a metal detector for facilitating control of the distance from the ground.

[0018] Figure 5 A schematic diagram of the structure of the pressure regulating assembly in a metal detector for facilitating control of the distance from the ground.

[0019] Figure 6A schematic diagram of the structure of a metal detector and a caster assembly for facilitating control of the distance from the ground.

[0020] Figure 7 A schematic diagram of the structure of a plug-in control unit in a metal detector for controlling the distance from the ground.

[0021] In the figure: 1-support shell, 2-detector body, 3-plug-in control unit, 4-retractable mobile unit, 5-plug-in transmission assembly, 6-pressure adjustment assembly, 7-castor assembly, 8-mounting plate, 9-positioning block, 10-slot, 11-fixed pipe, 12-pneumatic transmission A part, 13-sensing touch rod, 14-pneumatic balance pipe, 15-pneumatic transmission B part, 16-rack, 17-guide, 18-cavity, 19-plug-in tube, 20-piston tube, 21-pneumatic transmission C part, 22-adjustment plate, 23-limiting slide plate, 24-pneumatic transmission D part, 25-pressure regulating box, 26-transmission pipe, 27-support pipe, 28-gear, 29-support seat, 30-positioning block, 31-air guide hole, 32-lifting adjustment pipe, 33-movable seat, 34-pneumatic transmission E part, 35-castor, 36-control handle, 37-connecting shell, 38-insert block, 39-locking part, 40-power element, 41-threaded rod, 42-regulating plate, 43-pneumatic transmission F part, 44-air guide pipe, 45-electric control component. DETAILED DESCRIPTION

[0022] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] See also Figure 1 and Figure 2In one embodiment of the present invention, a metal detector that is convenient for controlling the distance from the ground includes: a supporting shell 1; a detector body 2, the detector body 2 is detachably connected to the supporting shell 1, and is used to detect underground metal; a retractable mobile unit 4, the retractable mobile unit 4 is arranged on the inner side of the supporting shell 1, is symmetrically arranged, and is connected to the supporting shell 1; an insertable control unit 3, the insertable control unit 3 is plugged into the retractable mobile unit 4, and is used to realize the expansion of the retractable mobile unit 4 when inserted, and drive the retractable mobile unit 4 to realize the adjustment of the distance between the detector body 2 and the ground; wherein, the retractable mobile unit The dynamic unit 4 includes: a plug-in transmission component 5, a pressure regulating component 6 and a caster component 7. The caster component 7 is symmetrically arranged on the inner side of the support shell 1 and is rotatably connected to the support shell 1. The plug-in transmission component 5 is fixedly connected to the support shell 1, connected to the caster components 7 on both sides, and connected to the plug-in control unit 3, and cooperates with the plug-in control unit 3 to realize the retraction and extension of the caster component 7. One end of the pressure regulating component 6 is connected to the caster component 7, and the other end is connected to the plug-in control unit 3 after plugging, and is used to cooperate with the plug-in control unit 3 to drive the unfolded caster component 7 to adjust the distance between the detector body 2 and the ground.

[0025] In this embodiment, the detector body 2 is connected to the support shell 1 by bolts. When the device is running, after the plug-in control unit 3 is plugged in with the plug-in transmission assembly 5, the plug-in transmission assembly 5 drives the caster assemblies 7 on both sides to unfold, and the caster assemblies 7 extend from the inner side of the support shell 1 to complete the support of the support shell 1. After the plug-in control unit 3 is completed, it can also drive the pressure adjustment assembly 6. The pressure adjustment assembly 6 can drive the unfolded mobile assembly 7 to realize the lifting and lowering of the support shell 1, thereby adjusting the distance between the detector body 2 and the ground. Compared with the prior art, the height of the detector coil cannot be adjusted in this application, which causes the coil to collide with stones and debris on the bottom during detection, which is easy to cause damage to the metal detector detection coil. By setting a retractable mobile unit 4 and cooperating with the plug-in control unit 3, not only can the distance between the detector body 2 and the ground be flexibly adjusted, but also the rapid disassembly and assembly of the equipment can be realized, and the caster assembly 7 can be automatically retracted and released during the disassembly and assembly process, which provides great convenience for the storage of the equipment and enhances the safety and convenience of the equipment when in use.

[0026] In one embodiment of the present invention, please refer to Figure 3 and Figure 4The plug-in transmission assembly 5 includes: a mounting plate 8, a positioning block 9, a slot 10, a fixed pipe 11, a sensing touch rod 13, an air pressure balance pipe 14 and a rack 16. The mounting plate 8 is fixedly connected to the outside of the support shell 1. The inner side of one end of the mounting plate 8 away from the support shell 1 is provided with a slot 10 plugged with the plug-in control unit 3. The fixed pipe 11 is fixedly connected to the mounting plate 8, and one end is fixedly connected to the air pressure balance pipe 14 arranged on the inner side of the support shell 1. The inner sides of both ends of the air pressure balance pipe 14 are slidably connected with air pressure transmission B parts 15 connected to the air pressure regulating assembly 6. The rack 16 is fixedly connected to the outside of the pneumatic transmission B part 15, connected to the supporting shell 1 through the guide part 17, and connected to the caster assembly 7, and is used to cooperate with the movement of the pneumatic transmission B part to realize the retraction and extension of the caster assembly 7. The pneumatic transmission A part 12 is slidably connected to the inside of the other end of the fixed pipe 11. The sensing touch rod 13 is set on the inside of the slot 10 and is slidably connected to the pneumatic transmission A part 12. A spring is fixedly connected between the pneumatic transmission A part 12 and the sensing touch rod 13, and is used to cooperate with the plug-in control unit 3 to drive the pneumatic transmission A part 12 to realize the movement of the pneumatic transmission B part.

[0027] In this embodiment, a slot 10 for plugging with the plug-in control unit 3 is provided on the top shell wall of the mounting plate 8, the fixed pipe 11 is fixedly connected to the inner side of the mounting plate 8, and the other end leads to the inner side of the supporting shell 1, the fixed pipe 11 is fixedly connected to the middle section of the air pressure balance pipe 14, and the inner sides of both ends of the air pressure balance pipe 14 are slidably connected with a pneumatic transmission B component 15, the pneumatic transmission B component 15 includes a second piston slidably connected to the inner side of the air pressure balance pipe 14 and a second push rod fixedly connected to the second piston, a rack 16 is fixedly connected to the outer side of the second push rod, the guide member 17 includes a connecting frame fixedly connected to the outer side of the rack 16 and a limit plate slidably connected to the connecting frame, the limit plate is fixedly connected to the inner wall of the supporting shell 1, the fixed pipe 11 is slidably connected to the inner side of one end away from the air pressure balance pipe 14 with a pneumatic transmission A component 12, the pneumatic transmission A component 12 includes a second piston slidably connected to the inner side of the air pressure balance pipe 14 and a second push rod fixedly connected to the second piston, a rack 16 is fixedly connected to the outer side of the second push rod, the guide member 17 includes a connecting frame fixedly connected to the outer side of the rack 16 and a limit plate slidably connected to the connecting frame, the limit plate is fixedly connected to the inner wall of the supporting shell 1, the fixed pipe 11 is slidably connected to the inner side of one end away from the air pressure balance pipe 14 The first piston on the inner side of the channel 11 and the first push rod fixedly connected to the first piston, the first push rod is slidably connected to the inner side of the first push rod with a sensing touch rod 13, the sensing touch rod 13 and the first push rod are fixedly connected with each other with a spring, the other end of the sensing touch rod 13 passes to the inner side of the slot 10, when the plug-in control unit 3 is inserted into the inner side of the slot 10, the first piston is moved inside the fixed pipe 11 by pushing the sensing touch rod 13, thereby driving the second piston inside the two ends of the air pressure balance pipe 14 to move, the second piston drives the rack 16 to move along the limit plate through the second push rod, the rack 16 drives the caster assembly 7 to rotate, so as to realize the retraction and extension of the caster assembly 7, and by setting the plug-in transmission assembly 5, the plug-in control unit 3 can be used to realize the automatic retraction and extension of the caster assembly 7, so that after the device is disassembled, the caster assembly 7 is received in the inner side of the supporting shell 1, and after the device is assembled, the caster assembly 7 extends from the inner side of the supporting shell 1, which is convenient for people to store the equipment and improves the convenience of the equipment when in use.

[0028] In one embodiment of the present invention, the plug-in transmission assembly 5 also includes: a cavity 18, a plug-in tube 19 and a piston tube 20, the cavity 18 is symmetrically arranged on the inner side of the inner wall at both ends of the mounting plate 8, the plug-in tube 19 is fixedly connected on both sides of the mounting plate 8, one end is connected to the cavity 18 on the same side, and the other end is plugged into the plug-in control unit 3, the piston tube 20 is symmetrically arranged on the inner side of the supporting shell 1, fixedly connected to the supporting shell 1, and one end is connected to the cavity 18 on the same side, and the other end is slidably connected to the inner side thereof, and a pneumatic transmission C part 21 connected to the pressure regulating assembly 6 is arranged, which is used to cooperate with the change of the air pressure inside the cavity 18 to drive the pressure regulating assembly 6 to adjust the distance between the detector body 2 and the ground.

[0029] In this embodiment, cavities 18 are provided on the inner sides of both ends of the mounting plate 8, and plug-in tubes 19 are provided on the outer sides of both ends. Piston tubes 20 fixedly connected to the support shell 1 are provided on the outer sides of the cavities 18 on both sides, and a pneumatic transmission C part 21 is provided on the inner side of one end of the piston tube 20 away from the cavity 18. The pneumatic transmission C part 21 includes a third piston slidably connected to the inner side of the piston tube 20 and a third push rod fixedly connected to the third piston. The other end of the third push rod is fixedly connected to the regulating plate 22 on the inner side of the pressure regulating assembly 6. When the plug-in control unit 3 is inserted into the inner side of the slot 10, the plug-in control unit 3 is simultaneously plugged into the plug-in tube 19. The plug-in control unit 3 cooperates with the plug-in tube 19 to drive the air pressure inside the cavity 18 to change, thereby realizing the movement of the third piston inside the piston tube 20. The third piston drives the pressure regulating component 6 through the third push rod, thereby realizing the driving of the caster component 7, and realizing the adjustment of the distance between the detector body 2 and the ground. By setting up the plug-in transmission component 5, it is also possible to cooperate with the plug-in control unit 3 to realize the driving of the pressure regulating component 6, and drive the unfolded caster component 7 through the pressure regulating component 6 to realize the adjustment of the distance between the detector body 2 and the ground, thereby avoiding the collision of the detector body 2 with stones and debris on the ground during detection, which is beneficial to improving the safety of the equipment during use.

[0030] In one embodiment of the present invention, please refer to Figure 6 The caster assembly 7 includes: a support tube 27, a support seat 29, an air guide hole 31, a lifting and lowering adjustment tube 32, a movable seat 33 and a caster 35. The support tube 27 is rotatably connected to the inner side of the support shell 1, and a gear 28 meshing with the rack 16 is fixedly connected to the outer side. The tube wall of the support tube 27 is provided with an air guide hole 31 connected to the pressure regulating assembly 6. The support tube 27 is also fixedly connected with a lifting and lowering adjustment tube 32. A support seat 29 fixedly connected to the support tube 27 is provided on the outer side of the lifting and lowering adjustment tube 32. A pneumatic transmission E piece 34 is slidably connected to the inner side of the lifting and lowering adjustment tube 32. The movable seat 33 is slidably connected to the support seat 29, and one end is fixedly connected to the pneumatic transmission E piece 34, and a plurality of casters 35 are rotatably connected to the outer side of the other end, which are used to drive the casters 35 to rise and fall in accordance with the change of the air pressure inside the support tube 27 and the lifting and lowering adjustment tube 32 to adjust the distance between the detector body 2 and the ground.

[0031] In this embodiment, support tubes 27 are rotatably connected at both ends of the inner side of the support shell 1, gears 28 are fixedly connected to the outer sides of the support tubes 27 on both sides, and the gears 28 are meshed with the rack 16 on the inner side of the plug-in transmission assembly 5 on the same side, and support seats 29 are symmetrically arranged on the outer side of the support tube 28, and the support seats 29 are fixedly connected to the support tube 27, and a lifting adjustment tube 32 fixedly connected to the support tube 27 is arranged on the inner side of the support seat 29, wherein the pneumatic transmission E member 34 includes a sliding connection arranged on the lifting adjustment tube 32. A fifth piston inside the lowering and adjusting tube 32 and a fifth push rod fixedly connected to the fifth piston, the other end of the fifth push rod is fixedly connected to the movable seat 33, and the other end of the movable seat 33 is rotatably connected to the outside with a plurality of casters 35. In addition, air guide grooves are provided on the inner sides of the tube walls at both ends of the support tube 27, and the air guide grooves are connected to the lifting and lowering adjusting tubes 32 one by one. The tube wall of the support tube 27 is provided with air guide holes 31 corresponding to the air guide grooves, and the air guide holes 31 are connected to the pressure regulating assembly 6. As the plug-in control unit 3 is completed, The rack 16 cooperates with the corresponding gear 28 to realize the rotation of the support tube 27, the support tube 27 drives the support seat 29 to rotate, and cooperates with the movable seat 33 to realize the expansion of the caster 35, so as to facilitate people to control the movement of the device. The plug-in control unit 3 drives the pressure adjustment components 6 on both sides through the plug-in transmission component 5. The pressure adjustment component 6 drives the air inside the corresponding air guide groove to flow through the air guide hole 31 to adjust the air pressure inside the lifting and adjusting tube 32, and drives the fifth piston to rise and fall inside the lifting and adjusting tube 32, and each The lifting height of the fifth piston is kept consistent. The fifth piston realizes the lifting of the movable seat 33 through the fifth push rod, and then realizes the lifting of the caster 35. The distance between the detector body 2 and the ground is adjusted. By setting the caster assembly 7, the caster 35 can be automatically retracted and released during the assembly process, which is convenient for people to store and use the equipment. At the same time, the casters 35 can be lifted and lowered synchronously to adjust the distance between the detector body 2 and the ground, thereby avoiding the collision of the detector body 2 with stones and debris on the ground during detection, thereby improving the service life of the equipment.

[0032] In addition, a positioning block 30 is fixedly connected to the outer wall of the support seat 29. When the support tube 27 drives the support seat 29 to flip over to realize the deployment of the caster 35, the positioning block 30 abuts against the inner wall of the support shell 1, thereby realizing the positioning of the support seat 29 after the flip, so that the caster 35 maintains vertical contact with the ground, thereby ensuring the stability of the support.

[0033] In one embodiment of the present invention, please refer to Figure 5The pressure regulating assembly 6 includes: an adjusting plate 22, a pressure regulating box 25 and a transmission pipe 26. The adjusting plate 22 is arranged on the outside of the supporting shell 1, fixedly connected to the pneumatic transmission C part 21, and fixedly connected on the outside with a limiting slide plate 23 slidably connected to the shell wall of the supporting shell 1. The pressure regulating box 25 is sleeved on the outside of the supporting tube 27, fixedly connected to the supporting shell 1, and communicated with the air guide hole 31. The transmission pipe 26 is arranged between the adjusting plate 22 and the pressure regulating box 25, fixedly connected to the pressure regulating box 25, and slidably connected on the inside with a pneumatic transmission D part 24 fixedly connected to the adjusting plate 22, which is used to cooperate with the movement of the adjusting plate 22 to realize the lifting and lowering of the caster 35.

[0034] In this embodiment, both ends of the adjusting plate 22 close to the supporting shell 1 are fixedly connected with a limiting slide plate 23, and the limiting slide plate 23 is slidably connected to the shell wall of the supporting shell 1. A pressure regulating box 25 fixedly connected to the supporting shell 1 is arranged on the outside of the air guide hole 31, and the supporting tube 27 passes through the pressure regulating box 25 and is rotatably connected to the pressure regulating box 25. In addition, the pneumatic transmission D part 24 includes a fourth piston slidably connected to the inner side of the transmission tube 26 and a fourth push rod fixedly connected to the fourth piston, and the other end of the fourth push rod is connected to the adjusting plate 22 is fixedly connected, and the adjustment plate 22 is also fixedly connected to the third push rod. When the third push rod drives the adjustment plate 22 to move, the adjustment plate 22 drives the fourth piston to move inside the transmission tube 26 through the fourth push rod. The pressure regulating box 25 cooperates with the air guide hole 31 to realize the flow of air inside the air guide groove, thereby completing the adjustment of the caster assembly 7. By setting the pressure regulating assembly 6, it can cooperate with the plug-in control unit 3 and the plug-in transmission assembly 5 to complete the adjustment of the caster assembly 7, thereby realizing the lifting of the caster 35, which can effectively prevent the detector body 2 from colliding with stones and debris on the ground during detection.

[0035] In one embodiment of the present invention, please refer to Figure 7 The plug-in control unit 3 includes: a control handle 36, a connecting shell 37, a plug-in block 38 and an electronic control component 45. The control handle 36 is fixedly connected to the outside of the connecting shell 37, and a plug-in block 38 is fixedly connected to the inside of the connecting shell 37. The plug-in block 38 is plugged into the plug-in transmission component 5. A locking piece 39 is symmetrically arranged on the inside of the plug-in block 38. The locking piece 39 is fixedly connected to the plug-in block 38 and is used to cooperate with the plug-in transmission component 5 to lock the plug-in block 38. The electronic control component 45 is connected to the control handle 36 and is plugged into the plug-in transmission component 5. It is used to cooperate with the plug-in transmission component 5 to drive the pressure adjustment component 6 to adjust the distance between the detector body 2 and the ground.

[0036] In this embodiment, the connecting shell 37 is fixedly connected to the outer side of one end of the control handle 36, the connecting shell 37 is slidably connected to the mounting plate 8, and a plug block 38 is fixedly connected to the inner wall of the connecting end of the connecting shell 37 and the control handle 36, and the plug block 38 is plugged into the slot 10. In addition, the inner sides of both ends of the plug block 38 are fixedly connected to locking pieces 39, and the locking piece 39 is an electric telescopic rod. The control handle 36 is also provided with an electric control component 45 plugged into the plug tube 19. The connecting shell 37 is set On the mounting plate 8, the electric control component 45 is plugged into the plug-in tube 19, and the plug-in block 38 is inserted into the inner side of the slot 10. The plug-in block 38 drives the sensing touch rod 13 to retract and extend the caster 35, and the assembled electric control component 45 can cooperate with the plug-in transmission component 5 to drive the pressure regulating component 6 to lift the caster 35. By providing the plug-in control unit 3, the device has an assembly function, which is convenient for storing the device and for people to control the device. At the same time, when the device is damaged, there is no need to replace the entire device, which is convenient for people to maintain.

[0037] In one embodiment of the present invention, the electronic control component 45 includes: a power element 40, a threaded rod 41, an adjustment plate 42 and an air duct 44. The power element 40 is fixedly connected to the inner side of the control handle 36, the threaded rod 41 is fixedly connected to the output end of the power element 40, the outer side of the threaded rod 41 is threadedly connected with an adjustment plate 42, and the outer side of the adjustment plate 42 is symmetrically provided with a pneumatic transmission F part, and the outer sides of the pneumatic transmission F parts on both sides are slidably connected with an air duct 44 fixedly connected to the connecting shell 37, and the other end of the air duct 44 is plugged into the plug-in transmission component 5.

[0038] In this embodiment, the power element 40 is fixedly connected and arranged at the top of the inner side of the control handle 36. The power element 40 is driven electrically. The pneumatic transmission F component includes a sixth push rod and a sixth piston fixedly connected to the sixth push rod. The sixth piston is slidably connected to the air duct 44. One end of the air duct 44 is located on the inner side of the control handle 36, and the other end is fixedly connected and arranged on the inner side of the connecting shell 37. The air duct 44 is plugged with the plug-in tube 19. During the installation process, the air duct 44 is plugged with the plug-in tube 19. The power element 40 drives the threaded rod 41 to rotate, and the threaded rod 41 drives the regulating plate 42. The regulating plate 42 drives the sixth pistons on both sides to move inside the air duct 44, cooperates with the plug-in tube 19 to realize the movement of the third piston, and then cooperates with the pressure regulating assembly 6 to realize the lifting and lowering of the caster 35. By setting the electric control assembly 45, the caster assembly 7 can be adjusted in cooperation with the plug-in transmission assembly 5 and the pressure regulating assembly 6, which can effectively prevent the detector body 2 from colliding with stones and debris on the ground during detection.

[0039] In one embodiment of the present invention, it also includes: a positioning block 9, which is slidingly connected to the mounting plate 8, is symmetrically arranged, and is engaged with a positioning slot arranged on the inner wall of the connecting shell 37. A spring is fixedly connected between the positioning block 9 and the mounting plate 8. By setting the positioning block 9, when the insert block 38 is fully inserted into the inner side of the slot 10, the positioning block 9 is engaged with the positioning slot arranged on the connecting shell 37, thereby realizing the installation positioning of the device, ensuring the accuracy of the device during installation, and then ensuring the smooth progress of subsequent transmission, thereby improving the stability of the device during use.

[0040] The metal detector which is convenient for controlling the distance from the ground can flexibly adjust the distance between the detector body 2 and the ground by providing a retractable movable unit 4 and cooperating with the plug-in control unit 3, and can also realize the rapid disassembly and assembly of the device, and can realize the automatic retraction and extension of the caster assembly 7 during the disassembly and assembly process, which provides great convenience for the storage of the device and enhances the safety and convenience of the device when in use. By providing a plug-in transmission assembly 5, the automatic retraction and extension of the caster assembly 7 can be realized in cooperation with the plug-in control unit 3, so that after the device is disassembled, the caster assembly 7 is stored in the inner side of the supporting shell 1, and after the device is assembled, the caster assembly 7 extends out from the inner side of the supporting shell 1, which is convenient for people to store the device and improves the convenience of the device when in use. It can also cooperate with the plug-in control unit 3 to realize the driving of the pressure regulating assembly 6, and drive the unfolded caster assembly 7 through the pressure regulating assembly 6 to realize the adjustment of the distance between the detector body 2 and the ground, thereby avoiding The detector body 2 is prevented from colliding with stones and debris on the ground during detection, which is beneficial to improving the safety of the equipment during use. By setting the caster assembly 7, the caster 35 can be automatically retracted and extended during the assembly process, which is convenient for people to store and use the equipment. At the same time, the casters 35 can be raised and lowered synchronously to adjust the distance between the detector body 2 and the ground, thereby avoiding the detector body 2 from colliding with stones and debris on the ground during detection, thereby improving the service life of the equipment. By setting the pressure adjustment assembly 6, the caster assembly 7 can be adjusted in cooperation with the plug-in control unit 3 and the plug-in transmission assembly 5, thereby achieving the lifting of the caster 35, which can effectively avoid the detector body 2 from colliding with stones and debris on the ground during detection. By setting the plug-in control unit 3, the equipment has an assembly function, which is convenient for storage of the equipment and for people to operate the equipment. At the same time, when the equipment is damaged, there is no need to replace the entire equipment, which is convenient for people to maintain.

[0041] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A metal detector that is easy to control the distance from the ground, characterized in that: include: Support shell; A detector body, the detector body is detachably connected to the supporting shell and is used to detect underground metal; A retractable movable unit, the retractable movable unit is arranged inside the supporting shell, is symmetrically arranged, and is connected to the supporting shell; An insertable control unit, which is plugged into the retractable movable unit and is used to expand the retractable movable unit when inserted, and to drive the retractable movable unit to adjust the distance between the detector body and the ground; Among them, the retractable mobile unit includes: a plug-in transmission assembly, a pressure adjustment assembly and a caster assembly. The caster assembly is symmetrically arranged on the inner side of the supporting shell and is rotatably connected to the supporting shell. The plug-in transmission assembly is fixedly connected to the supporting shell, connected to the caster assemblies on both sides, and connected to the plug-in control unit, and cooperates with the plug-in control unit to realize the retraction and extension of the caster assembly. One end of the pressure adjustment assembly is connected to the caster assembly, and the other end is connected to the plug-in control unit after plugging, and is used to cooperate with the plug-in control unit to drive the unfolded caster assembly to adjust the distance between the detector body and the ground.

2. The metal detector that is convenient for controlling the distance from the ground according to claim 1, characterized in that: The plug-in transmission assembly includes: a mounting plate, a positioning block, a slot, a fixed pipe, a sensing touch rod, an air pressure balance pipe and a rack. The mounting plate is fixedly connected to the outside of the support shell, and a slot for plugging with the plug-in control unit is arranged on the inner side of one end of the mounting plate away from the support shell. The fixed pipe is fixedly connected to the mounting plate, and one end is fixedly connected to the air pressure balance pipe arranged on the inner side of the support shell. The inner sides of both ends of the air pressure balance pipe are slidably connected with air pressure transmission B parts connected to the air pressure regulating assembly. The gear The strip is fixedly connected and arranged on the outside of the pneumatic transmission B part, is connected to the supporting shell through a guide part, and is connected to the caster assembly, and is used to cooperate with the movement of the pneumatic transmission B part to realize the retraction and extension of the caster assembly. The pneumatic transmission A part is slidably connected on the inner side of the other end of the fixed pipe. The sensing touch rod is arranged on the inner side of the slot and is slidably connected to the pneumatic transmission A part. A spring is fixedly connected between the pneumatic transmission A part and the sensing touch rod, and is used to cooperate with the plug-in control unit to drive the pneumatic transmission A part to realize the movement of the pneumatic transmission B part.

3. The metal detector that is convenient for controlling the distance from the ground according to claim 2, characterized in that: The plug-in transmission assembly also includes: a cavity, a plug-in tube and a piston tube. The cavity is symmetrically arranged on the inner side of the inner wall at both ends of the mounting plate. The plug-in tube is fixedly connected on both sides of the mounting plate, one end is connected to the cavity on the same side, and the other end is plugged into the plug-in control unit. The piston tube is symmetrically arranged on the inner side of the supporting shell, fixedly connected to the supporting shell, and one end is connected to the cavity on the same side, and the other end is slidably connected inside and is provided with a pneumatic transmission C part connected to the pressure regulating assembly, which is used to cooperate with the change of air pressure inside the cavity to drive the pressure regulating assembly to adjust the distance between the detector body and the ground.

4. The metal detector that is convenient for controlling the distance from the ground according to claim 3, characterized in that: The caster assembly includes: a support tube, a support seat, an air guide hole, a lifting and lowering adjustment tube, a movable seat and a caster. The support tube is rotatably connected to the inner side of the support shell, and a gear meshing with a rack is fixedly connected to the outer side. An air guide hole connected to the pressure regulating assembly is provided on the tube wall of the support tube. A lifting and lowering adjustment tube is also fixedly connected to the support tube. A support seat fixedly connected to the support tube is provided on the outer side of the lifting and lowering adjustment tube. A pneumatic transmission E part is slidably connected to the inner side of the lifting and lowering adjustment tube. The movable seat is slidably connected to the support seat, and one end is fixedly connected to the pneumatic transmission E part, and a plurality of casters are rotatably connected to the outer side of the other end, which are used to drive the casters to rise and fall in accordance with the changes in the air pressure inside the support tube and the lifting and lowering adjustment tube to adjust the distance between the detector body and the ground.

5. The metal detector that is convenient for controlling the distance from the ground according to claim 4, characterized in that: The pressure regulating assembly includes: an adjusting plate, a pressure regulating box and a transmission pipe. The adjusting plate is arranged on the outside of the supporting shell and is fixedly connected to the pneumatic transmission C part, and a limiting slide plate is fixedly connected to the outside and is slidably connected to the shell wall of the supporting shell. The pressure regulating box is sleeved on the outside of the supporting tube, fixedly connected to the supporting shell, and communicated with the air guide hole. The transmission pipe is arranged between the adjusting plate and the pressure regulating box, fixedly connected to the pressure regulating box, and a pneumatic transmission D part fixedly connected to the adjusting plate is slidably connected to the inside, which is used to cooperate with the movement of the adjusting plate to realize the lifting and lowering of the caster.

6. The metal detector that is convenient for controlling the distance from the ground according to claim 2, characterized in that: The plug-in control unit includes: a control handle, a connecting shell, a plug-in block and an electronic control component. The control handle is fixedly connected to the outside of the connecting shell, and a plug-in block is fixedly connected to the inside of the connecting shell. The plug-in block is plugged into the plug-in transmission component. Locking pieces are symmetrically arranged on the inside of the plug-in block. The locking pieces are fixedly connected to the plug-in block and are used to cooperate with the plug-in transmission component to lock the plug-in block. The electronic control component is connected to the control handle and is plugged into the plug-in transmission component. It is used to cooperate with the plug-in transmission component to drive the pressure adjustment component to adjust the distance between the detector body and the ground.

7. The metal detector that is convenient for controlling the distance from the ground according to claim 6, characterized in that: The electronic control component includes: a power element, a threaded rod, a regulating plate and an air duct, the power element is fixedly connected to the inner side of the control handle, the threaded rod is fixedly connected to the output end of the power element, the outer side of the threaded rod is threadedly connected with a regulating plate, the outer side of the regulating plate is symmetrically provided with pneumatic transmission F parts, the outer sides of the pneumatic transmission F parts on both sides are slidably connected with air ducts fixedly connected to the connecting shell, and the other end of the air duct is plugged into the plug-in transmission component.

8. The metal detector that facilitates controlling the distance from the ground according to claim 6, characterized in that: Also includes: A positioning block is slidably connected to the mounting plate, symmetrically arranged, and engaged with a positioning slot arranged on the inner wall of the connecting shell. A spring is fixedly connected between the positioning block and the mounting plate.

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