Portable folding support device and detection equipment

Abstract

The invention relates to a portable folding support device and detection equipment, and the device comprises a first connecting seat which is provided with a first binding surface and a rotating shaft, the first binding surface is provided with an eccentric positioning pin, the peripheral side surface of the rotating shaft is provided with a first pin hole, and the first pin hole is internally provided with a first inclined surface; the first inclined surface is gradually close to the center of the first pin hole in the length direction of the first pin hole and is located on the side, away from the first binding surface, of the first pin hole; the first connecting piece is provided with an assembling hole, a plug pin, an elastic element and a second binding face, the rotating shaft penetrates through the assembling hole and the second binding face to be parallel and right opposite to the first binding face, a limiting groove is formed in the second binding face, the plug pin is movably connected with the first connecting piece, and the plug pin is matched with the first pin hole in a profiling mode; the elastic element presses the plug pin in the radial direction of the rotating shaft to abut against the circumferential side face of the rotating shaft. The plug pin pushes the first binding face to be attached to the second binding face, the gap error at the rotating joint of the support is greatly reduced, and the overall stability of the support is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of folding brackets, and in particular to a portable folding bracket device and a detection device. Background Art

[0002] With the development of modern science and technology, a portable linear motion bracket has emerged. Its working principle is that the portable linear motion bracket is stabilized in the working area. After the operator manually unfolds it through the rotating shaft, the linear screw motion module is used to realize the stable movement of the end-carried object. The portable linear motion bracket has the characteristics of fast folding and easy to carry. It can quickly carry out operations in more remote and complex working conditions. Therefore, more and more equipment and technologies need to be equipped with portable linear motion brackets.

[0003] In the field of safety detection, after the bracket is quickly deployed in the detection area, the operator installs the detection equipment at the end of the linear screw motion module. The linear screw motion module drives the detection equipment to move to realize scanning and detection of the object. At present, the bracket has the problem of slow deployment and storage speed, resulting in slow detection efficiency, and the bracket stroke is short, resulting in insufficient detection space. The reason is that after the bracket stroke becomes longer, the bracket becomes loose due to the gap error of the rotating joint at the bottom, resulting in a decrease in stability. If the stability of the bracket is insufficient, the detection accuracy will be greatly reduced. Summary of the invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, there is a gap error at the rotating joint of the bracket. When the bracket stroke becomes longer, the bottom rotating joint is easy to loosen due to the gap error, resulting in a decrease in the stability of the bracket. Further, a portable foldable bracket device and detection equipment are provided, which greatly reduce the accumulated gap error at the rotating joint of the bracket, thereby reducing the inertia of the bracket during movement and improving the overall stability of the bracket.

[0005] In order to solve the above technical problems, the present invention provides a portable foldable bracket device, comprising: A first connecting seat, which is provided with a first fitting surface and a rotation axis perpendicular to the first fitting surface, the first fitting surface is provided with an eccentric positioning pin, the peripheral side surface of the rotation axis is provided with a first pin hole, the inner wall of the first pin hole is provided with a first inclined surface, the first inclined surface gradually approaches the center of the first pin hole along the length direction of the first pin hole, and the first inclined surface is located on a side of the first pin hole away from the first fitting surface; The first connecting member is provided with an assembly hole, a latch, an elastic element and a second fitting surface, the rotating shaft passes through the assembly hole, the second fitting surface is arranged parallel to and opposite to the first fitting surface, a limiting groove is arranged on the second fitting surface, the limiting groove is conformally matched with the eccentric positioning pin, the latch is movably connected to the first connecting member, the latch is conformally matched with the first pin hole, the elastic element presses the latch along the radial direction of the rotating shaft so that the latch abuts against the peripheral side surface of the rotating shaft, wherein when the first connecting member is driven to rotate by external force, the end of the latch abutting against the peripheral side surface slides into the first pin hole from the peripheral side surface, the latch slides along the first inclined surface, and the latch and the first connecting member move in a direction close to the first fitting surface, the eccentric positioning pin is inserted into the limiting groove along the axial direction of the rotating shaft, and the first fitting surface is fitted with the second fitting surface.

[0006] In one embodiment of the present invention, it also includes a limit seat, which includes two arms arranged opposite to each other and a connecting part connecting the two arms, the two arms are fixedly connected to the limit seat, and the two arms respectively abut against two sides of the latch; one end of the latch away from the rotating axis is arranged opposite to the connecting part, one end of the elastic element is connected to the connecting part, and the other end of the elastic element is connected to the end of the latch away from the rotating axis.

[0007] In one embodiment of the present invention, the two arms are respectively in contact with two sides of the latch along the axial direction of the rotation axis.

[0008] In one embodiment of the present invention, the pin is provided with a side thrust surface and a second inclined surface on both sides along the axial direction of the rotating shaft, respectively, the side thrust surface abuts the first connecting member, the second inclined surface is located on the side of the pin away from the first fitting surface, and the second inclined surface is parallel to the first inclined surface.

[0009] In one embodiment of the present invention, the first connecting member is provided with a second pin hole penetrating the assembly hole, the latch is movably inserted in the second pin hole, and the side thrust surface abuts against an inner wall of the second pin hole.

[0010] In one embodiment of the present invention, the latch pin is provided with a limit head, the limit head is located at an end of the latch pin away from the rotating shaft, and the size of the limit head is larger than the size of the second pin hole.

[0011] In one embodiment of the present invention, the eccentric positioning pin is half embedded in the first fitting surface, and the axial direction of the eccentric positioning pin is parallel to the first fitting surface, and the eccentric positioning pin is rotatably connected to the first fitting surface.

[0012] In one embodiment of the present invention, it also includes an X-axis linear module, a first Z-axis linear module and a second Z-axis linear module, the first connecting seat is arranged at the output end of the X-axis linear module; the first Z-axis linear module is arranged on the first connecting member; the second Z-axis linear module is arranged at the output end of the first Z-axis linear module.

[0013] In one embodiment of the present invention, a base is further included, and the X-axis linear module is arranged on the base.

[0014] In one embodiment of the present invention, it also includes a rotatably connected second connecting member and a second connecting seat, the second connecting seat is connected to the output end of the first Z-axis linear module, and the second Z-axis linear module is arranged on the second connecting member, wherein the second connecting seat is provided with a second limit pin, and the second connecting member is provided with a second locking groove, and when the second connecting member rotates to the limited position, the second limit pin is located in the second locking groove.

[0015] In one embodiment of the present invention, the second connecting member is provided with a spring pin, the second connecting seat is provided with an arc slide groove and a limiting hole located at one end of the arc slide groove, the arc slide groove is gradually lifted along the direction in which the limiting hole is provided, and the spring pin is inserted into the arc slide groove and slides along the arc slide groove.

[0016] In one embodiment of the present invention, the first bonding surface and the second bonding surface are both perpendicular to a horizontal plane.

[0017] In one embodiment of the present invention, a metal level is also included which is arranged on the X-axis linear module.

[0018] A detection device is also provided, which includes the portable foldable bracket device and a scanning detection device arranged at the output end of the second Z-axis linear module.

[0019] The above technical solution of the present invention has the following advantages compared with the prior art: The portable foldable bracket device described in the present invention utilizes an elastic element to compress the latch along the direction of the rotating axis. When the first connecting member is rotated to a limited position, one end of the latch abutting the rotating axis is just inserted into the first pin hole, and the first connecting member and the first connecting seat are automatically locked, achieving the working purpose of being fixed as one, thereby improving the deployment efficiency of the bracket; when one end of the latch abutting the rotating axis is inserted into the first pin hole, the latch slides along the first inclined surface, and the first inclined surface can also push the latch and the first connecting member to slide along the rotating axis close to the first fitting surface until the first fitting surface and the second fitting surface are completely fitted together, thereby greatly eliminating the first fitting surface. The gap error between the connecting seat and the first connecting member improves the stability of the rotating joint of the bracket, thereby improving the overall stability of the bracket; the operator can quickly release the lock of the first connecting member and the first connecting seat by withdrawing the pin, thereby improving the storage efficiency of the bracket; when the first bonding surface and the second bonding surface are bonded, the eccentric positioning pin of the first bonding surface is inserted into the limiting groove of the second bonding surface, which can not only further eliminate the gap error between the first bonding surface and the second bonding surface, but also further fix the first connecting seat, eliminate the position error of the first connecting seat, and improve the overall accuracy of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the structure of the portable foldable bracket device of the present invention when it is unfolded; Figure 2 for Figure 1 Another structural schematic diagram of the portable foldable stand device shown; Figure 3 for Figure 1 A schematic structural diagram of the first connecting member shown; Figure 4 for Figure 1 A structural schematic diagram of the first connecting socket shown; Figure 5 for Figure 1 A schematic diagram of the structure of the latch shown; Figure 6 for Figure 1 A schematic structural diagram of the second connecting socket shown; Figure 7 for Figure 1 A schematic diagram of the structure of the portable foldable stand device when it is stored; Figure 8 for Figure 1 A schematic structural diagram of a cross-sectional view of the portable foldable stand device shown; Fig. 9 for Figure 8 An enlarged view of point A is shown; Fig.10 for Figure 1 Schematic diagram of the structure of the limit seat shown.

[0022] Description of the accompanying drawings: 1. first connecting seat; 2. eccentric positioning pin; 3. first fitting surface; 4. rotating shaft; 5. first pin hole; 6. first connecting member; 7. assembly hole; 8. latch; 9. second fitting surface; 10. limiting groove; 11. second inclined surface; 12. limiting head; 13. side thrust surface; 14. first limiting pin; 15. first locking groove; 16. limiting seat; 17. connecting part; 18. X-axis linear module; 19. first A Z-axis linear module; 20, a second Z-axis linear module; 21, a mounted object; 22, a second connecting seat; 23, a second connecting piece; 24, a second locking groove; 25, a second limiting pin; 26, a spring pin; 27, a limiting hole; 28, an arc slide groove; 29, a base; 30, a rangefinder; 31, a mounting seat; 32, a second pin hole; 33, a screw; 34, a metal level; 35, an elastic element; 36, a first inclined plane; 37, an arm body. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Example

[0024] Reference Figure 1 , Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, in one embodiment of the present invention, a portable foldable bracket device is disclosed, comprising: A first connecting seat 1 is provided with a first fitting surface 3 and a rotating shaft 4 perpendicular to the first fitting surface 3. More specifically, the rotating shaft 4 is located on the first fitting surface 3. The first fitting surface 3 is provided with an eccentric positioning pin 2. The peripheral side surface of the rotating shaft 4 is provided with a first pin hole 5. The cross section of the first pin hole 5 is rectangular. The inner wall of the first pin hole 5 is provided with a first inclined surface 36. The first inclined surface 36 extends along the length direction of the first pin hole 5. The first inclined surface 36 gradually approaches the center of the first pin hole 5 along the length direction of the first pin hole 5, and the first inclined surface 36 is located on the side of the first pin hole 5 away from the first fitting surface 3. The first connecting member 6 is provided with an assembly hole 7 and the rotating shaft 4 passes through the assembly hole 7, so the first connecting member 6 is rotatably connected to the rotating shaft 4, and the first connecting member 6 is locked on the rotating shaft 4 by a screw 33. The first connecting member 6 is also provided with a latch 8, an elastic element 35 and a second fitting surface 9, and the elastic element 35 is preferably a spring. The second fitting surface 9 is parallel to and opposite to the first fitting surface 3. The second fitting surface 9 is provided with a limiting groove 10, and the number of the limiting grooves 10 matches the number of the eccentric positioning pins 2. When the first connecting member When the first connecting member 6 is rotated to the limiting position, the limiting grooves 10 are respectively opposite to the eccentric positioning pins 2, and the limiting grooves 10 are matched with the eccentric positioning pins 2 in a contoured manner; the latch 8 is movably connected to the first connecting member 6 and abuts against the peripheral side surface, and the elastic element 35 always presses the latch 8 along the radial direction of the rotating shaft 4, so that the end of the latch 8 close to the rotating shaft 4 always abuts against the peripheral side surface of the rotating shaft 4, so that the latch 8 can slide over the peripheral side surface and automatically insert into the first pin hole 5, fixing the first connecting member 6 and the second connecting seat 22 as a whole; Specifically, when the bracket is unfolded, an external force drives the first connecting member 6 to rotate from a horizontal state to a vertical state. When the first connecting member 6 rotates to a limited position, the latch 8 just slides to the first pin hole 5 and is inserted into the first pin hole 5. The first connecting member 6 and the first connecting seat 1 are locked for the first time. At this time, the eccentric positioning pin 2 is directly opposite to the limiting groove 10 along the axial direction of the rotating shaft 4. As the latch 8 is continuously inserted into the first pin hole 5, the latch 8 slides on the first inclined surface 36. The force of the first inclined surface 36 on the latch 8 pushes the latch 8 and the first connecting member 6 in reverse, so that The latch pin 8 and the first connecting member 6 slide on the rotating shaft 4 in the direction close to the first fitting surface 3 until the eccentric positioning pin 2 is inserted into the limiting groove 10, and the first fitting surface 3 is completely fitted with the second fitting surface 9, and the first connecting member 6 and the first connecting seat 1 are locked for the second time. At this time, the gap between the first connecting member 6 and the first connecting seat 1 is greatly eliminated, the gap error at the moving joint of the bracket is reduced, the shaking of the first connecting member 6 is reduced, and the overall stability and deployment efficiency of the bracket are improved; the limited position refers to the position of the first connecting member 6 when it is in a vertical state.

[0025] Furthermore, the first bonding surface 3 and the second bonding surface 9 are both perpendicular to a horizontal plane.

[0026] Reference Figure 3 and Figure 4 As shown, further, in this embodiment, four eccentric positioning pins 2 and limiting grooves 10 are provided, and the four eccentric positioning pins 2 are evenly distributed around the rotating shaft 4, wherein two eccentric positioning pins 2 are distributed on both sides of the rotating shaft 4 along the vertical direction, and the remaining two eccentric positioning pins 2 are distributed on both sides of the rotating shaft 4 along the horizontal direction; Reference Figure 1 and 10 As shown, in order to limit the latch 8 and improve the stability of the latch 8, a limit seat 16 is also included, the limit seat 16 includes two arms 37 arranged opposite to each other, and a connecting part 17 fixedly connected to the two arms 37, the two arms 37 are fixedly connected to the limit seat 16, the two arms 37 respectively abut against the two sides of the latch 8 to play a limiting role, ensuring that the latch 8 can slide smoothly; the end of the latch 8 away from the rotating shaft 4 is arranged opposite to the connecting part 17, and the connecting part 17 is used to further limit the latch 8 to prevent the latch 8 from being separated from the first connecting member 6; one end of the elastic element 35 is connected to the connecting part 17, and the other end of the elastic element 35 is connected to the end of the latch 8 away from the rotating shaft 4.

[0027] Furthermore, the two arms 37 are respectively in contact with two sides of the latch 8 along the axial direction of the rotating shaft 4 , so as to stably transmit the force of the first inclined surface 36 to the first connecting member 6 .

[0028] Reference Fig. 9 As shown, further, the pin 8 is provided with a side thrust surface 13 and a second inclined surface 11 on both sides of the axial direction of the rotating shaft 4, respectively, and the side thrust surface 13 abuts against the first connecting member 6, and the side thrust surface 13 can immediately transmit the force of the pin 8 to the first connecting member 6; the second inclined surface 11 is located on the side of the pin 8 away from the first fitting surface 3, and the second inclined surface 11 is parallel to the first inclined surface 36, and the second inclined surface 11 plays a guiding role, so that the end of the pin 8 close to the rotating shaft 4 is smoothly inserted into the first pin hole 5. When the pin 8 is inserted into the first pin hole 5, the second inclined surface 11 is close to the first inclined surface 36 and slides along the first inclined surface 36, so that the pin 8 is tightly inserted into the first pin hole 5, ensuring that the gap between the first fitting surface 3 and the second fitting surface 9 is minimized.

[0029] Furthermore, the side thrust surface 13 is configured as a plane, and the plane can completely fit the first connecting member 6, thereby improving the stability of the latch.

[0030] Reference Figure 5 As shown, in order to make the structure of the bracket more compact, the first connecting member 6 is provided with a second pin hole 32 passing through the assembly hole 7, the latch pin 8 is slidably inserted in the second pin hole 32, and the side push surface 13 abuts against the first connecting member 6 along the direction of the second fitting surface 9.

[0031] Reference Figure 5As shown, in order to prevent the pin 8 from being fully inserted into the second pin hole 32, the pin 8 is provided with a limit head 12, the limit head 12 is located at the end of the pin 8 away from the rotating shaft 4, and the size of the limit head 12 is larger than the size of the second pin hole 32. When the pin 8 is fully inserted into the second pin hole 32, the limit head 12 abuts against the first connecting member 6.

[0032] Reference Figure 1 As shown, the eccentric positioning pin 2 is half embedded in the first fitting surface 3, and the axial direction of the eccentric positioning pin 2 is parallel to the first fitting surface 3; the eccentric positioning pin 2 is rotatably connected to the first fitting surface 3, and the rotating eccentric positioning pin 2 can reduce the friction between the first fitting surface 3 and the second fitting surface 9, thereby improving the deployment and storage efficiency of the bracket.

[0033] Reference Figure 1 As shown, it also includes an X-axis linear module 18 and a first Z-axis linear module 19. The first connecting seat 1 is arranged at the output end of the X-axis linear module 18, and the first Z-axis linear module 19 is arranged on the first connecting member 6. The X-axis linear module 18 can drive the first Z-axis linear module 19 to move in the horizontal direction, and the first Z-axis linear module 19 can drive the carrying object 21 in the vertical direction. The carrying object 21 includes a scanning detection device, etc. Therefore, the scanning detection device can be lifted and lowered and translated to scan and detect objects of different heights and widths, which greatly broadens the working space of the scanning detection device.

[0034] Reference Figure 2 As shown, in order to further widen the height of the bracket, it also includes a rotatably connected second connecting member 23 and a second connecting seat 22, the second connecting seat 22 is connected to the output end of the first Z-axis linear module 19, and the second connecting member 23 is used to further install the Z-axis linear module or carry the object 21, wherein, in order to ensure that the Z-axis linear module on the second connecting member 23 can be accurately rotated to a vertical state and improve the efficiency of the bracket deployment, the second connecting seat 22 is provided with a second limit pin 25, and the second connecting member 23 is provided with a second locking groove 24, when the second connecting member 23 rotates to the limited position, the second limit pin 25 just abuts against the second locking groove 24, and the second limit pin 25 is surrounded in the second locking groove 24 to prevent the second connecting member 23 from continuing to rotate, the limited position refers to the position when the Z-axis linear module is in a parallel state with the first Z-axis linear module 19.

[0035] Reference Figure 1As shown, further, it also includes a second Z-axis linear module 20, which is arranged on the second connecting member 23, and the output end of the second Z-axis linear module 20 is connected to the carrying object 21, and the second Z-axis linear module 20 can further raise the height of the carrying object 21 on the basic height of the first Z-axis linear module 19.

[0036] Reference Figure 7 As shown, in order to ensure that the first connecting member 6 can be accurately rotated to a vertical state each time, the first connecting seat 1 is provided with a first limit pin 14, and the first connecting member 6 is provided with a first locking groove 15. When the first connecting member 6 is rotated to a limited position, the first limit pin 14 just abuts against the first locking groove 15, and the first limit pin 14 is surrounded in the first locking groove 15 to prevent the first connecting member 6 from continuing to rotate.

[0037] Reference Figure 1 As shown, in order to stabilize the bracket in the working area, a base 29 is also included, and the X-axis linear module 18 is arranged on the base 29.

[0038] Reference Figure 1 As shown, further, the base 29 is provided with a mounting seat 31 and a rangefinder 30 arranged on the mounting seat 31, the mounting seat 31 can adjust the height of the rangefinder 30, the X-axis linear module 18 is arranged on the base 29, the rangefinder 30 is preferably an infrared laser rangefinder, and the scanning detection device usually includes a transmitting unit and a receiving unit, and the transmitting unit and the receiving unit are respectively installed on two brackets, so the rangefinder 30 is used to detect the distance and horizontality between the bracket where it is located and another bracket, so that the operator can technically adjust the position of the base 29.

[0039] Reference Figure 2 and Figure 6As shown, in order for the second connecting member 23 and the second connecting seat 22 to be automatically locked into a fixed whole and improve the stability of the bracket rotation joint, the second connecting member 23 is provided with a spring pin 26, and the second connecting seat 22 is provided with an arc groove 28 and a limiting hole 27 at one end of the arc groove 28. The spring pin 26 is inserted into the arc groove 28 and can slide along the arc groove 28 and finally insert into the limiting hole 27, so that the second connecting member 23 and the second connecting seat 22 are locked. Specifically, the arc groove 28 is a circular The arc-shaped groove can guide the spring pin 26; the bottom of the arc slide groove 28 is gradually lifted along the direction in which the limiting hole 27 is provided, which can compress the spring pin 26 to ensure that the spring pin 26 can bounce into the limiting hole 27. When the spring pin 26 slides along the direction of the limiting hole 27, the spring pin 26 is gradually compressed by the bottom of the arc slide groove 28 from a natural state, slides into the limiting hole 27, and the spring pin 26 bounces into the limiting hole 27; when the lock of the second connecting member 23 and the second connecting seat 22 is released, the spring pin 26 can be pulled out.

[0040] Reference Figure 2 As shown, it also includes a metal level 34 disposed on the X-axis linear module 18, and the metal level 34 is used to measure the verticality of the bracket. Example

[0041] A detection device is also provided, which includes the portable foldable support device and a scanning detection device. The scanning detection device is used to scan and detect the object to be detected. The scanning detection device is arranged at the output end of the second Z-axis linear module. After the portable foldable support device is fully opened, the scanning detection device can be lifted and translated by the linear module to increase the scanning detection area of ​​the scanning detection device.

[0042] The working principle of the detection device described in the present invention is: When unfolding, after the bracket is fixed in the working area, the operator holds and lifts the second Z-axis linear module 20 by hand, and then the second Z-axis linear module 20 and the first Z-axis linear module 19 begin to automatically flip from a horizontal state to a vertical state. When the second Z-axis linear module 20 flips to be parallel to the first Z-axis linear module 19, the second locking groove 24 just rotates to the second limit pin 25 and is blocked to form a limit. At the same time, the spring pin 26 slides the arc groove 28 and bounces into the limit hole 27. Finally, the first Z-axis linear module 19 and the second Z-axis linear module 20 are fixed as a whole; when the first Z-axis linear module 19 flips to a vertical state, the first locking groove 15 just rotates to the first limit pin 14 and is blocked to form a limit. At the same time, the pin 8 is automatically inserted into the second pin hole 32, and the first inclined surface 36 pushes the first connecting member 6 back to approach the first connecting seat 1. After the eccentric locating pin 2 is inserted into the limiting groove 10, the first fitting surface 3 is completely fitted with the second fitting surface 9. Finally, the X-axis linear module 18 and the first Z-axis linear module 19 are fixed as a whole. After the operator adjusts the horizontality of the bracket, the scanning and detection device is installed to the output end of the second Z-axis linear module 20. The X-axis linear module 18, the first Z-axis linear module 19 and the second Z-axis linear module 20 drive the scanning and detection device to be lifted and translated, and the scanning and detection device starts to detect. When storing, the operator first disassembles the scanning and detection device, and then manually withdraws the spring pin 26 to release the lock of the first Z-axis linear module 19 and the second Z-axis linear module 20. Then, withdraw the pin 8 to release the lock of the first Z-axis linear module 19 and the X-axis linear module 18, and then flip the second Z-axis linear module 20 and the first Z-axis linear module 19 to a horizontal state to complete the storage.

[0043] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A portable foldable bracket device, characterized in that: include, A first connecting seat, which is provided with a first fitting surface and a rotation axis perpendicular to the first fitting surface, the first fitting surface is provided with an eccentric positioning pin, the peripheral side surface of the rotation axis is provided with a first pin hole, the inner wall of the first pin hole is provided with a first inclined surface, the first inclined surface gradually approaches the center of the first pin hole along the length direction of the first pin hole, and the first inclined surface is located on a side of the first pin hole away from the first fitting surface; The first connecting member is provided with an assembly hole, a latch, an elastic element and a second fitting surface, the rotating shaft passes through the assembly hole, the second fitting surface is arranged parallel to and opposite to the first fitting surface, a limiting groove is arranged on the second fitting surface, the limiting groove is conformally matched with the eccentric positioning pin, the latch is movably connected to the first connecting member, the latch is conformally matched with the first pin hole, the elastic element presses the latch along the radial direction of the rotating shaft so that the latch abuts against the peripheral side surface of the rotating shaft, wherein when the first connecting member is driven to rotate by external force, the end of the latch abutting against the peripheral side surface slides into the first pin hole from the peripheral side surface, the latch slides along the first inclined surface, and the latch and the first connecting member move in a direction close to the first fitting surface, the eccentric positioning pin is inserted into the limiting groove along the axial direction of the rotating shaft, and the first fitting surface is fitted with the second fitting surface.

2. A portable foldable stand device according to claim 1, characterized in that: It also includes a limit seat, which includes two arms arranged opposite to each other and a connecting part connecting the two arms, the two arms are fixedly connected to the limit seat, and the two arms respectively abut against two sides of the latch; one end of the latch away from the rotating axis is arranged opposite to the connecting part, one end of the elastic element is connected to the connecting part, and the other end of the elastic element is connected to one end of the latch away from the rotating axis.

3. A portable foldable stand device according to claim 2, characterized in that: The two arms are respectively in contact with two sides of the latch along the axial direction of the rotating shaft.

4. A portable foldable stand device according to claim 1, characterized in that: The latch pin is provided with a side push surface and a second inclined surface on both sides of the rotating shaft axially, respectively. The side push surface abuts against the first connecting member. The second inclined surface is located on the side of the latch pin away from the first fitting surface, and the second inclined surface is parallel to the first inclined surface.

5. A portable foldable stand device according to claim 4, characterized in that: The first connecting member is provided with a second pin hole penetrating the assembly hole, the latch pin is movably inserted in the second pin hole, and the side thrust surface abuts against the inner wall of the second pin hole.

6. A portable foldable stand device according to claim 5, characterized in that: The latch pin is provided with a limit head, the limit head is located at an end of the latch pin away from the rotating shaft, and the size of the limit head is larger than the size of the second pin hole.

7. A portable foldable stand device according to claim 1, characterized in that: The eccentric positioning pin is half embedded in the first fitting surface, and the axial direction of the eccentric positioning pin is parallel to the first fitting surface. The eccentric positioning pin is rotatably connected to the first fitting surface.

8. The portable foldable stand device according to claim 1, characterized in that: It also includes an X-axis linear module, a first Z-axis linear module and a second Z-axis linear module. The first connecting seat is arranged at the output end of the X-axis linear module; the first Z-axis linear module is arranged on the first connecting member; and the second Z-axis linear module is arranged at the output end of the first Z-axis linear module.

9. A portable foldable stand device according to claim 8, characterized in that: It also includes a second connecting member and a second connecting seat that are rotatably connected, the second connecting seat is connected to the output end of the first Z-axis linear module, and the second Z-axis linear module is arranged on the second connecting member, wherein the second connecting seat is provided with a second limit pin, and the second connecting member is provided with a second locking groove, and when the second connecting member is rotated to the limited position, the second limit pin is located in the second locking groove.

10. A portable foldable stand device according to claim 9, characterized in that: The second connecting member is provided with a spring pin, the second connecting seat is provided with an arc slide groove and a limiting hole located at one end of the arc slide groove, the arc slide groove is gradually lifted along the direction in which the limiting hole is provided, the spring pin is inserted in the arc slide groove and slides along the arc slide groove.

11. A detection device, comprising a portable foldable support device as claimed in any one of claims 1 to 10, and further comprising a scanning detection device arranged at the output end of the second Z-axis linear module.

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