A multi-species threshold beam judgment detection device

Abstract

The application relates to the technical field of threshold beam judgment and detection equipment, and discloses a multi-type threshold beam judgment and detection equipment, which comprises a rack module and a conveying line module. The top of the inner cavity of the rack module is provided with at least two camera modules. The conveying line module is provided with a jacking mechanism on each side. The rack module is further provided with two rotary driving devices. The rotary driving devices are provided with a jaw assembly. The conveying line module is arranged below the threshold beam conveying belt camera module. The jacking mechanism jacks up the threshold beam. The jaw assembly is driven by the rotary driving device to clamp and overturn the threshold beam. The outermost two camera modules in the rack module simultaneously take photos to judge and identify the product features of the threshold beam, judge the type and left and right parts of the material, and then all the camera modules simultaneously detect all the surfaces of the threshold beam, so that the cost is reduced, the detection efficiency is increased, and the detection accuracy is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of threshold beam judgment and detection equipment, and in particular relates to a multi-type threshold beam judgment and detection equipment. BACKGROUND

[0002] The threshold beam (also referred to as a threshold plate) of an automobile is a steel beam located at the lower side of the automobile door. When the side of the automobile collides, the threshold beam can effectively prevent the deformation of the door, thereby enhancing the performance of side protection. In a new energy automobile, the strength of the side threshold beam plays a key role in protecting the battery. Therefore, the performance of the threshold beam is an important guarantee for the safe driving of the new energy automobile. After the production of the threshold beam of the automobile, nuts, accessories and the like need to be riveted. After riveting, it is necessary to detect whether there is riveting leakage or riveting error.

[0003] The threshold beam of the automobile needs to be judged and detected after production. Whether the existing threshold beam is riveted or whether it is riveted is confirmed by an operator. The efficiency is low, the accuracy is not high, and there is no record. When the types of threshold beams are numerous and there are left and right parts, the operator cannot control the types of threshold beams and judge the left and right parts, and the workload is huge and the efficiency is low. SUMMARY

[0004] The application provides a multi-type threshold beam judgment and detection equipment, which has the advantages of first identifying the product characteristics of the threshold beam, judging the types of materials and the left and right parts of the materials, and then detecting all surfaces of the threshold beam, so as to solve the problem of low efficiency of the existing multi-type threshold beam surface detection.

[0005] To achieve the above purpose, the application adopts the following technical scheme: a multi-type threshold beam judgment and detection equipment, comprising a rack module and a conveying line module, at least two camera modules are arranged on the top of the inner cavity of the rack module, lifting mechanisms are arranged on the two sides of the conveying line module, two rotary driving devices are further arranged on the rack module, and a clamping jaw assembly is arranged on the rotary driving device.

[0006] The conveying line module is arranged below the threshold beam conveying belt camera module, the lifting mechanism lifts the threshold beam, the clamping jaw assembly is driven by the rotary driving device to clamp and overturn the threshold beam, the outermost two camera modules in the rack module are used for simultaneous photographing and judgment, the product characteristics of the threshold beam are identified, the types of materials and the left and right parts of the materials are judged, and then all surfaces of the threshold beam are detected by all camera modules.

[0007] Further, jigs are arranged on the two sides of the feeding end of the conveying line module.

[0008] Further, the rack module is provided with a first light shield plate above the conveying line module and outside the camera module, and the bottom of the rack module is further provided with a second light shield plate on both sides of the conveying line module and directly below the camera module, and the conveying line module is provided with a third light shield plate directly below the camera module.

[0009] Further, the rotating drive device comprises a mounting plate fixedly installed on the rack module, a servo motor fixedly installed on the outer side of the mounting plate, an output rotating shaft of the servo motor extending to the inner side of the mounting plate and fixedly connected with a passive rotating plate, two turnover drive cylinders fixedly installed on the side of the passive rotating plate away from the mounting plate, and a jaw assembly fixedly installed on the output rotating shaft of each of the two turnover drive cylinders.

[0010] Further, the jaw assembly comprises a turnover linkage block fixedly sleeved with the output rotating shaft of the turnover drive cylinder, a cross rod fixedly connected with the end of the turnover linkage block away from the output rotating shaft of the turnover drive cylinder, two positioning rods fixedly connected with the ends of the side of the cross rod, a clamping block fixedly installed on the end of each of the two positioning rods away from the cross rod, and a reinforcing rib fixedly installed between the two positioning rods.

[0011] Further, the rotating drive device comprises a mounting plate fixedly installed on the rack module, a servo motor fixedly installed on the outer side of the mounting plate, an output rotating shaft of the servo motor extending to the inner side of the mounting plate and fixedly connected with a passive rotating plate, at least three positioning double tubes provided on the outer side of the passive rotating plate, two piston cavities, i.e. an upper piston cavity and a lower piston cavity, distributed in the positioning double tubes, tube covers fixedly installed on both ends of the positioning double tubes, a partition plate fixedly installed in the middle of the lower piston cavity, the partition plate separating the lower piston cavity into two independent chambers, a first piston movably sleeved in the lower piston cavity on one side of the partition plate, a first connecting rod fixedly connected with the middle of one side of the first piston, a linkage block fixedly connected with the end of the first connecting rod away from the first piston and extending out of the outer side of the tube cover, a tooth rod fixedly connected with one end of the linkage block, a partition cover fixedly installed on the outer side of the tooth rod of one of the tube covers, a rotating shaft movably sleeved in the partition cover, a first electromagnet fixedly sleeved with the middle of the rotating shaft, the first electromagnet meshing with the tooth groove on the tooth rod, jaw assemblies fixedly connected with both ends of the rotating shaft extending out of the outer side of the partition cover, and a first electromagnet fixedly installed on the inner side of the other tube cover and located in the lower piston cavity.

[0012] Further, the clamping jaw assembly comprises two horizontal rods fixedly connected with the two rotating shafts respectively, and the two horizontal rods are fixedly connected with positioning rods at the ends away from the rotating shafts respectively, and the two positioning rods are fixedly connected with clamping blocks at the ends away from the horizontal rods respectively.

[0013] Further, the number of clamping blocks on the positioning rods is not less than two, the clamping blocks are arranged equidistantly on the positioning rods, and the clamping blocks between the two positioning rods are fixedly connected with elastic belts.

[0014] Further, the inside of the upper piston cavity is provided with a second piston, and the second piston is fixedly installed with a second magnetic ring on the side away from the through hole, a second electromagnet is fixedly installed on the mounting plate above the output shaft of the servo motor, and the second electromagnet is located in the position corresponding to the second magnetic ring in the uppermost positioning double pipe, the chamber on one side of the second piston in the upper piston cavity and the chamber on one side of the first piston in the lower piston cavity are communicated through the through hole, and the communication chamber is filled with liquid.

[0015] Further, the bottom of the front face and the back face of the rack module is fixedly installed with a light-shielding curtain respectively, and the light-shielding curtain is located above the conveying line module.

[0016] The application has the following advantages:

[0017] 1. The multi-type door sill beam judgment and detection equipment provided by the application can effectively reduce the cost, increase the detection efficiency, improve the detection accuracy, and has the advantages of small occupied space, etc.

[0018] 2. The multi-type door sill beam judgment and detection equipment provided by the application comprises at least three clamping jaw assemblies, when one of the clamping jaw assemblies clamps and flips the door sill beam, the clamping jaw assembly is automatically flipped and separated from the door sill beam, thereby avoiding the problem of shielding the camera module from detecting the surface of the door sill beam, and improving the accuracy of the door sill beam surface detection result. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim at the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort on the basis of the provided drawings:

[0020] Figure 1 Fig. 1 is a structural schematic diagram of the present application;

[0021] Figure 2 Fig. 2 is a right view of Fig. 1; Figure 1

[0022] Figure 3 Fig. 3 is a front view of Fig. 1; Figure 1

[0023] Fig. 4 is a structural schematic diagram of a rotary drive device in Embodiment 1 of the present application; Figure 4

[0024] Fig. 5 is a flowchart of a threshold beam detection of the present application; Figure 5

[0025] Fig. 6 is a schematic diagram of the types of threshold beam products and the left and right piece judgment of materials in the present application; Figure 6

[0026] Fig. 7 is a structural schematic diagram of a rotary drive device in Embodiment 2 of the present application; Figure 7

[0027] Fig. 8 is a schematic diagram of the internal structure of one of the positioning double tubes and the sealing cover in Fig. 7; Figure 8 Figure 7 Fig. 9 is a structural schematic diagram of a clamping jaw assembly in Fig. 7;

[0028] Figure 9 Figure 7 Fig. 10 is a structural schematic diagram of a clamping jaw assembly in Embodiment 3 of the present application.

[0029] Figure 10

[0030] ​​​​In the figure: 1, rack module; 2, conveying line module; 3, camera module; 4, jig module; 5, first light shield; 6, second light shield; 7, third light shield; 8, jacking mechanism; 9, rotary drive device; 901, mounting plate; 902, servo motor; 903, passive rotating plate; 10, turnover drive cylinder; 101, turnover linkage block; 11, clamping jaw assembly; 111, cross rod; 112, positioning rod; 113, clamping block; 114, reinforcing rib; 115, elastic belt; 12, positioning double pipe; 121, through hole; 13, pipe cover; 14, partition plate; 15, first piston; 16, first connecting rod; 17, linkage block; 18, toothed rod; 19, partition cover; 20, rotating shaft; 201, gear; 21, first electromagnet; 22, sliding block; 23, first magnetic ring; 24, second connecting rod; 25, return spring; 26, second piston; 27, second magnetic ring; 28, second electromagnet; 29, light curtain. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Embodiment one, as Figures 1-3 A multi-species threshold beam judgment and detection device, comprising a rack module 1, a conveying line module 2 is arranged at the middle below the rack module 1, and the conveying line module 2 penetrates the rack module 1, a plurality of camera modules 3 are arranged at the top of the inner cavity of the rack module 1, the number of the camera modules 3 is not less than two, and the plurality of camera modules 3 are arranged horizontally and equidistantly above the inner cavity of the rack module 1 and the conveying line module 2, and a jig module 4 is arranged at both sides of the feeding end of the conveying line module 2, so as to position the threshold beam placed on the conveying line module 2, so that the conveying line module 2 conveys the threshold beam to below the camera modules 3 in the rack module 1, and the camera modules 3 are used to detect the surface of the threshold beam.

[0033] The rack module 1 is provided with a first light shield 5 above the conveying line module 2 and outside the camera modules 3, and the bottom of the rack module 1 is further provided with a second light shield 6 below the conveying line module 2 and below the camera modules 3, and the conveying line module 2 is provided with a third light shield 7 below the camera modules 3, so as to avoid the interference of external light on the visual detection of the camera modules 3 by the light shielding effect of the first light shield 5, the second light shield 6 and the third light shield 7.

[0034] The lifting mechanism 8 is fixedly installed on both sides of the conveying line module 2, the rotating drive device 9 is fixedly installed on both sides of the rack module 1, and the rotating drive device 9 is located above the conveying line module 2; after the conveying line module 2 conveys the rocker panel to the lower side of the camera module 3, the rocker panel is lifted by the lifting mechanism 8 on both sides of the conveying line module 2, the two ends of the rocker panel are clamped by the rotating drive device 9 on both sides of the rack module 1, and the rocker panel is rotated in sequence, and each surface of the rocker panel is detected in sequence by the camera module 3; after the detection is completed, the rotating drive device 9 is rotated to reset, the rocker panel is transferred by the lifting mechanism 8, and the transferred rocker panel falls onto the conveying line module 2 under the control of the lifting mechanism 8 and is conveyed to the next station by the conveying line module 2.

[0035] Please refer to Figure 1 and Figure 4 The rotating drive device 9 comprises an installation plate 901 fixedly installed on the rack module 1, a servo motor 902 fixedly installed on the outer side of the installation plate 901, an output rotating shaft of the servo motor 902 extending to the inner side of the installation plate 901 and fixedly connected with a passive rotating plate 903, two turnover drive cylinders 10 fixedly installed on the side of the passive rotating plate 903 away from the installation plate 901, and two jaw assemblies 11 fixedly installed on the output rotating shafts of the two turnover drive cylinders 10 respectively; the two jaw assemblies 11 are driven to rotate by the two turnover drive cylinders 10 respectively, so as to control the two jaw assemblies 11 to clamp one end of the rocker panel.

[0036] The jaw assembly 11 comprises a turnover linkage block 101 fixedly sleeved with the output rotating shaft of the turnover drive cylinder 10, a cross rod 111 fixedly connected with the end of the turnover linkage block 101 away from the output rotating shaft of the turnover drive cylinder 10, two positioning rods 112 fixedly connected with the two ends of the side surface of the cross rod 111 respectively, two clamping blocks 113 fixedly installed on the ends of the two positioning rods 112 away from the cross rod 111 respectively, and a reinforcing rib 114 fixedly installed between the two positioning rods 112; the structure design of the two ends of the side surface of the cross rod 111 provided by the positioning rods 112 enables the jaw assembly 11 to grab one surface of the rocker panel, so as to clamp the rocker panel and drive the rocker panel to turn over.

[0037] The bottom of the front face and the back face of the rack module 1 is fixedly installed with a light-shielding curtain 29 respectively, and the light-shielding curtain 29 is located above the conveying line module 2; the setting of the light-shielding curtain 29 does not affect the in-and-out of the rocker panel on the conveying line module 2 into the interior of the rack module 1, and the gap (space for the rocker panel to move through) between the rack module 1 and the conveying line module 2 is shielded, thereby improving the light-shielding effect and further improving the accuracy of the visual detection result.

[0038] Please refer to 1- Figure 5, when in use, the feeding is carried out at one end of the conveying line module 2, and after feeding, the rocker module 4 on both sides of the conveying line module 2 is used to position the rocker beam, so as to adapt to the length of different rocker beams, after the rocker beam is positioned, the conveying line module 2 conveys the rocker beam to the position directly below the camera module 3 in the rack module 1, the jacking mechanism 8 on both sides of the conveying line module 2 is started to jack up the rocker beam to the height of the rotary driving device 9, and then the two rotary driving devices 9 are controlled to flip to grab and clamp the two ends of the rocker beam respectively, first, the outermost two camera modules 3 in the rack module 1 are used to take photos at the same time to identify the product characteristics of the rocker beam, so as to judge the type of the material and the left and right parts of the material (such as Figure 6 the state shown in the figure, and when the total number of the camera modules 3 is four), then the camera modules 3 in the rack module 1 are controlled to take photos at the same time to identify the surface of the rocker beam, and then the rotary driving device 9 is controlled to flip the rocker beam, and the camera modules 3 in the rack module 1 are used to take photos at the same time to detect the next surface of the rocker beam, and so on, until all the surfaces of the rocker beam are visually detected and corresponding marks are made, if NG, the rocker beam is conveyed to the next station by the conveying line module 2 to cover the NG mark for manual identification, and the above steps are repeated, the rocker beam reaches the last position of the conveying line, the inductor senses and stops conveying, and manual unloading is carried out.

[0039] In example two, on the basis of example one, the specific structure of the rotary driving device 9 is different from that of example one, please refer to Figures 7-9 At least three positioning double tubes 12 are arranged on the outer side of the passive rotating plate 903, the number of the positioning double tubes 12 is based on the number of the surfaces of the rocker beam, if the number is greater than four, the number of the positioning double tubes 12 can be four or more, the inside of the positioning double tube 12 is provided with two piston cavities distributed upward and downward, namely an upper piston cavity and a lower piston cavity, and a through hole 121 is formed in the middle of the side of the positioning double tube 12 away from the passive rotating plate 903, which connects the upper piston cavity and the lower piston cavity, tube covers 13 are fixedly installed at both ends of the positioning double tube 12, a partition plate 14 is fixedly installed in the middle of the lower piston cavity, the partition plate 14 divides the lower piston cavity into two independent chambers, a first piston 15 is movably sleeved on one side of the partition plate 14 in the lower piston cavity, a first connecting rod 16 is fixedly connected to the middle of one side of the first piston 15, the end of the first connecting rod 16 away from the first piston 15 extends out of the outer side of the tube cover 13 and is fixedly connected with a linkage block 17, and one end of the linkage block 17 is fixedly connected with a tooth rod 18.

[0040] The outer side of one pipe cover 13 is fixedly installed with a sealing cover 19 located outside the toothed rod 18, the inside of the sealing cover 19 movably sheaths a rotating shaft 20, the middle part of the rotating shaft 20 fixedly sheaths a gear wheel 201, the outer side of the gear wheel 201 is engaged with the toothed groove on the toothed rod 18, the two ends of the rotating shaft 20 respectively extend out of the outer side of the sealing cover 19 and are connected with the clamping jaw assembly 11, the ends, away from the rotating shaft 20, of the two cross rods 111 are respectively fixedly connected with positioning rods 112, the ends, away from the cross rods 111, of the two positioning rods 112 are respectively fixedly connected with clamping blocks 113, the inner side of the other pipe cover 13 is fixedly installed with a first electromagnet 21, the first electromagnet 21 is located inside the lower piston cavity, the inside of the lower piston cavity movably sheaths a sliding block 22 located on the other side of the sealing plate 14, the side, facing the first electromagnet 21, of the sliding block 22 is fixedly installed with a first magnetic ring 23, the sliding block 22 and the first piston 15 are fixedly connected with a second connecting rod 24, the outer side of the first connecting rod 16 is provided with a reset spring 25 located between the first piston 15 and the pipe cover 13.

[0041] The inside of the upper piston cavity movably sheaths a second piston 26, the side, away from the through hole 121, of the second piston 26 is fixedly installed with a second magnetic ring 27, the second electromagnet 28 is fixedly installed on the mounting plate 901 and located directly above the output rotating shaft of the servo motor 902, the second electromagnet 28 is positionally corresponding to the second magnetic ring 27 in the uppermost positioning double pipe 12, the chamber on the side of the second piston 26 in the upper piston cavity and the chamber on the side of the first piston 15 in the lower piston cavity are communicated through the through hole 121, and the communicated chamber is filled with liquid (the liquid can be water or hydraulic oil).

[0042] In use, the first electromagnet 21 is powered to generate a magnetic repulsion force on the first magnetic ring 23, pushing the sliding block 22 to drive the second connecting rod 24, the first piston 15, the first connecting rod 16, the linkage block 17 and the toothed rod 18 to move to the right, and the meshing of the toothed rod 18 and the gear wheel 201 drives the gear wheel 201 to rotate the rotating shaft 20 and the jaw assembly 11 to flip, thereby clamping one end of the rocker panel, and at the same time, the second piston 26 in the upper piston cavity moves to the left under the action of liquid pressure, when one of the jaw assemblies 11 is located directly above the rocker panel, the jaw assembly 11 will form an obstruction between the rocker panel and the camera module 3, and at this time, the second magnetic ring 27 is located on one side of the second electromagnet 28, and the second electromagnet 28 is powered to generate a magnetic repulsion force on the second magnetic ring 27, pushing the second magnetic ring 27 to drive the second piston 26 to move to the right, and the liquid in the upper piston cavity is pressed back into the lower piston cavity through the through hole 121, and the elastic force of the return spring 25 is used to overcome the magnetic repulsion force of the first electromagnet 21 on the first magnetic ring 23, pushing the first piston 15 to pull the first connecting rod 16, the linkage block 17 and the toothed rod 18 to move to the left, so that the first electromagnet 21 reverses its rotation, thereby reversing the jaw assembly 11 to reset and not forming an obstruction between the rocker panel and the camera module 3, and at the same time, the other jaw assemblies 11 maintain the clamping state of the rocker panel, thereby enabling the surface of the rocker panel to be fully detected, and the structure design of the small electromagnet is lower in cost and energy consumption compared with the multi-station shooting mode.

[0043] Embodiment three, please refer to Figure 10 On the basis of embodiment one, different from embodiment one, the number of clamping blocks 113 on the positioning rod 112 is not less than two, the clamping blocks 113 are arranged equidistantly on the positioning rod 112, and the clamping blocks 113 between the two positioning rods 112 are fixedly connected with the elastic belt 115, and when clamping the rocker panel with irregular surface, the elastic belt 115 is stretched to fit the surface of the rocker panel, thereby improving the clamping effect of the rocker panel with irregular surface.

[0044] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-species threshold beam judgment detection device, comprising a rack module (1) and a conveying line module (2), characterized in that, The top of the inner cavity of the rack module (1) is provided with at least two camera modules (3), the two sides of the conveying line module (2) are respectively provided with a jacking mechanism (8), and the rack module (1) is further provided with two rotary driving devices (9), and the rotary driving device (9) is provided with a clamping jaw assembly (11); The rotary driving device (9) comprises a mounting plate (901) fixedly installed on the rack module (1), a servo motor (902) fixedly installed on the outer side of the mounting plate (901), an output rotating shaft of the servo motor (902) extending to the inner side of the mounting plate (901) and fixedly connected with a passive rotating plate (903), at least three positioning double tubes (12) provided on the outer side of the passive rotating plate (903), two piston cavities, namely an upper piston cavity and a lower piston cavity, provided in the positioning double tube (12) and distributed upwards and downwards, tube covers (13) fixedly installed at the two ends of the positioning double tube (12), a partition plate (14) fixedly installed at the middle of the lower piston cavity, the partition plate (14) separating the lower piston cavity into two independent cavities, a first piston (15) movably sleeved in the lower piston cavity and located on one side of the partition plate (14), a first connecting rod (16) fixedly connected to one side of the middle of the first piston (15), an end of the first connecting rod (16) away from the first piston (15) extending out of the outer side of the tube cover (13) and fixedly connected with a linkage block (17), one end of the linkage block (17) fixedly connected with a tooth rod (18), one of the tube covers (13) fixedly installed with a partition cover (19) located on the outer side of the tooth rod (18), a rotating shaft (20) movably sleeved in the partition cover (19), a first electromagnet (21) fixedly sleeved in the middle of the rotating shaft (20), the outer side of the first electromagnet (21) engaged with a tooth groove on the tooth rod (18), the two ends of the rotating shaft (20) extending out of the outer side of the partition cover (19) and fixedly connected with the clamping jaw assembly (11), the other tube cover (13) fixedly installed with the first electromagnet (21) in the inner side thereof, the first electromagnet (21) located in the inner side of the lower piston cavity, a sliding block (22) movably sleeved in the inner side of the lower piston cavity and located on the other side of the partition plate (14), a first magnetic ring (23) fixedly installed on the side of the sliding block (22) facing the first electromagnet (21), and a second connecting rod (24) fixedly connected between the sliding block (22) and the first piston (15), and a reset spring (25) provided on the outer side of the first connecting rod (16) and located between the first piston (15) and the tube cover (13); The conveying line module (2) is below the camera module (3) of the sill beam conveying belt, the jacking mechanism (8) jacks up the sill beam, the clamping jaw assembly (11) is driven by the rotary driving device (9) to clamp and flip the sill beam, the sill beam product features are identified by simultaneously photographing the two outermost camera modules (3) in the rack module (1), the type and left and right parts of the material are judged, and all surfaces of the sill beam are detected by all the camera modules (3) at the same time.

2. The apparatus of claim 1, wherein, The fixture module (4) is arranged on both sides of the feeding end of the conveying line module (2).

3. The multi-species threshold beam determination device of claim 1, wherein, The first light shield (5) is arranged above the conveying line module (2) and outside the camera module (3) on the rack module (1), and the second light shield (6) is further arranged at the bottom of the rack module (1) and below the camera module (3).

4. The multi-species threshold beam determination device of claim 1, wherein, The clamping jaw assembly (11) comprises two horizontal rods (111) fixedly connected with two rotating shafts (20) respectively, and a positioning rod (112) is fixedly connected with one end of each horizontal rod (111) away from the rotating shaft (20), and a clamping block (113) is fixedly connected with one end of each positioning rod (112) away from the horizontal rod (111).

5. The multi-species threshold beam determination device of claim 4, wherein, The number of clamping blocks (113) on the positioning rod (112) is not less than two, the clamping blocks (113) are arranged equidistantly on the positioning rod (112), and the clamping blocks (113) between the two positioning rods (112) are fixedly connected with elastic belts (115).

6. The multi-species threshold beam determination device of claim 1, wherein, The second piston (26) is sleeved in the upper piston cavity, a second magnetic ring (27) is fixedly installed on one side of the second piston (26) away from the through hole (121), a second electromagnet (28) is fixedly installed on the mounting plate (901) and located above the output shaft of the servo motor (902), the second electromagnet (28) is located in position correspondence with the second magnetic ring (27) in the uppermost positioning double pipe (12), a chamber on one side of the second piston (26) in the upper piston cavity and a chamber on one side of the first piston (15) in the lower piston cavity are communicated through the through hole (121), and a liquid is injected into the communication chamber.

7. The multi-species threshold beam determination device of claim 1, wherein, The light shielding curtain (29) is fixedly installed on the bottom of the front face and the back face of the rack module (1) and located above the conveying line module (2).

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