A high-speed fully-automatic biochemical analyzer

Abstract

The application relates to a high-speed full-automatic biochemical analyzer. The biochemical analyzer comprises a sample feeding track module, a transmission track module, a recovery track module, an analysis part module and a rack assembly. The sample feeding track module comprises a sample feeding driving assembly, a basket assembly, a basket support frame and a scanning assembly. The basket support frame is fixedly connected with the rack assembly. The basket assembly is placed on the basket support frame and located above the sample feeding driving assembly. The sample feeding driving assembly drives a sample rack to move towards the scanning assembly. The scanning assembly comprises a transmission unit. The transmission unit is located at a transmission tail end of the sample feeding driving assembly. The biochemical analyzer fundamentally solves the phenomenon that the sample storage capacity of a common biochemical analyzer is limited, improves the test speed of the biochemical analyzer, provides technical support for subsequent biochemical analyzer online connection, saves the complicated manual operation and can avoid operation errors.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical instruments in clinical laboratory, and particularly relates to a high-speed full-automatic biochemical analyzer. BACKGROUND

[0002] With the development of science, the progress of medicine and the increasing demand of people for life and health quality, the medical industry has put forward higher requirements for the testing efficiency and humanized operation of in-vitro diagnostic equipment. The development of biochemical analyzer industry has experienced the first generation of biochemical analyzer, semi-automatic biochemical analyzer reagent and the current full-automatic biochemical analyzer era. In the overall design of the full-automatic biochemical analyzer, several disc components are generally included: sample disc, reagent disc and reaction disc. When detecting, the reagent solution in the reagent disc and the sample to be detected in the sample disc are added to the same reaction cup through the sampling mechanism, and the liquid is stirred uniformly to observe the reaction result.

[0003] Due to the limitation of the overall structure space of the instrument, the size of the sample disc is limited, so the number of samples that can be stored in the sample disc of the instrument is also limited, which reduces the detection speed and efficiency of the biochemical analyzer. Therefore, to improve the detection speed and efficiency of the analyzer, the first problem to be solved is the unlimited storage and automatic transportation of samples. SUMMARY

[0004] The present application aims to solve the above problems and provides a high-speed full-automatic biochemical analyzer, which adopts the technical scheme as follows:

[0005] A high-speed full-automatic biochemical analyzer, comprising: a sample feeding track module, a transmission track module, a recovery track module, an analysis module and a rack assembly, the sample feeding track module comprises a sample feeding driving assembly, a basket assembly, a basket support frame and a scanning assembly for scanning the code of the sample to be detected on the sample rack and transporting the sample rack to the transmission track module, the basket support frame is fixedly connected with the rack assembly, the basket assembly is placed on the basket support frame and located above the sample feeding driving assembly, the sample feeding driving assembly drives the sample rack to move towards the scanning assembly, and the scanning assembly comprises a transmission unit, the transmission unit is located at the conveying tail end of the sample feeding driving assembly;

[0006] The transmission track module comprises a track changing assembly, a sampling channel assembly, a rapid channel assembly and a sampling positioning driving assembly for acquiring the sample rack walking on the sampling channel assembly and positioning, the sampling channel assembly and the rapid channel assembly are arranged side by side, and the sampling channel assembly is close to the analysis module, the track changing assembly is arranged at the conveying head end of the rapid channel assembly, and is used for distributing the sample rack conveyed by the transmission unit to the sampling channel assembly or the rapid channel assembly;

[0007] The recovery track module comprises a recovery channel assembly, a recovery drive assembly, a sample withdrawal drive assembly, a recovery sample buffer area, a recovery basket assembly and a support frame, the recovery channel assembly is connected with the sampling channel assembly, the recovery drive assembly is installed at the recovery channel assembly to provide a pushing force for the sample holder to enter the recovery sample buffer area, the recovery sample buffer area and the recovery basket assembly are arranged on the support frame, the support frame is fixedly connected with the rack assembly, and the sample withdrawal drive assembly is located below the recovery sample buffer area.

[0008] On the basis of the above technical scheme, the sample feeding drive assembly comprises a first bearing frame, a first driven pulley, a first synchronous belt, a first driving pulley, a first stepping motor, a first sliding table, a push hand, a first photoelectric coupler and a first positioning ruler, the first driven pulley, the first synchronous belt, the first driving pulley and the first stepping motor constitute a synchronous wheel transmission mechanism and are installed on the first bearing frame, the first bearing frame is provided with a first guide rail, the first sliding table is connected with the first synchronous belt and is in sliding connection with the first guide rail, the push hand is fixedly connected with the first sliding table, the first positioning ruler is fixedly installed on the first bearing frame, the first photoelectric coupler is fixedly connected with the first sliding table, and the first positioning ruler has a plurality of blocking pieces capable of blocking the light transmission of the first photoelectric coupler.

[0009] On the basis of the above technical scheme, the track changing assembly comprises a second bearing frame, a second driven pulley, a second synchronous belt, a second driving pulley, a second stepping motor, a second sliding table, a track changing execution part, a second photoelectric coupler and a photoelectric coupling blocking piece, the second driven pulley, the second synchronous belt, the second driving pulley and the second stepping motor constitute a synchronous wheel transmission mechanism and are installed on the second bearing frame, the second bearing frame is provided with a second guide rail, the second sliding table is connected with the second synchronous belt and is in sliding connection with the second guide rail, the track changing execution part is fixedly connected with the second sliding table, the photoelectric coupling blocking piece is installed on the second sliding table, the second photoelectric coupler is arranged on the second bearing frame, and the second photoelectric coupler is at least two.

[0010] The present application has the advantages that it fundamentally solves the problem of limited sample storage capacity of ordinary biochemical analyzers, improves the testing speed of the biochemical analyzer, and provides technical support for subsequent biochemical analyzer online, sorts through the track changing assembly, accurately positions and automatically samples through the sampling positioning drive assembly, saves the trouble of manual operation, and avoids operation errors; and through the cooperation of the photoelectric coupler and the positioning ruler, the positioning accuracy is improved, and the control program writing and control program adjustment during production line adjustment are greatly simplified. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only one embodiment of the present application, and for those skilled in the art, other drawings can be obtained from the provided drawings without creative labor.

[0012] Figure 1 : top view structural schematic diagram of the present application;

[0013] Figure 2 : left view structural schematic diagram of the present application;

[0014] Figure 3 : structural schematic diagram of the sample injection driving assembly of the present application;

[0015] Figure 4 : Figure 3 : top view structural schematic diagram of the present application;

[0016] Figure 5 : three-dimensional structural schematic diagram of the basket assembly of the present application;

[0017] Figure 6 : structural schematic diagram of the sample injection driving assembly and the basket assembly of the present application;

[0018] Figure 7 : top view structural schematic diagram of the rail changing assembly of the present application;

[0019] Figure 8 : right view structural schematic diagram of the rail changing assembly of the present application;

[0020] Figure 9 : top view structural schematic diagram of the transmission rail module of the present application;

[0021] Figure 10 : front view structural schematic diagram of the transmission rail module of the present application;

[0022] Figure 11 : three-dimensional structural schematic diagram of the sample positioning driving assembly of the present application;

[0023] Figure 12 : three-dimensional structural schematic diagram of the rail changing blocking mechanism of the present application;

[0024] Figure 13 : three-dimensional structural schematic diagram of the sample withdrawal driving assembly of the present application;

[0025] Figure 14 : structural schematic diagram of the recycling rail module of the present application;

[0026] Figure 15The overhead structure schematic diagram of the recycling track module is shown in the present application. DETAILED DESCRIPTION

[0027] The present application is further described below in conjunction with the accompanying drawings and examples:

[0028] Embodiments of the present application are described in detail below with reference to examples shown in the accompanying drawings, wherein the same or similar notations are used to represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary only, and are used only for explanation of the present application, and cannot be understood as a limitation of the present application.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present application, it should be understood that the terms "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] As shown in Figure 1 and Figure 2 A high-speed fully-automatic biochemical analyzer, comprising: a sample feeding track module 1, a transmission track module 2, a recycling track module 3, an analysis part module and a rack assembly 4, the sample feeding track module 1 comprises a sample feeding driving assembly 5, a basket assembly 6, a basket support frame 7 and a scanning assembly 8 for scanning the sample to be detected on the sample rack 100 and transporting the sample rack to the transmission track module 2, the basket support frame 7 is fixedly connected with the rack assembly 4, the basket assembly 6 is placed on the basket support frame 7 and located above the sample feeding driving assembly 5, the sample feeding driving assembly 5 drives the sample rack 100 to move towards the scanning assembly 8, the scanning assembly 8 comprises a transmission unit, the transmission unit is located at the conveying tail end of the sample feeding driving assembly 5, and the sample feeding driving assembly 5 can be multiple;

[0033] The transport track module 2 comprises a track changing assembly 10, a sampling channel assembly 15, a rapid channel assembly 16 and a sampling positioning drive assembly 11 for taking and positioning the sample rack walking on the sampling channel assembly 15, the sampling channel assembly 15 and the rapid channel assembly 16 are arranged side by side and the sampling channel assembly 15 is close to the analysis module, the track changing assembly 10 is arranged at the conveying head of the rapid channel assembly 16 for distributing the sample rack conveyed by the conveying unit to the sampling channel assembly 15 or the rapid channel assembly 16.

[0034] As shown in Figure 14 and Figure 15 The recovery track module 3 comprises a recovery channel assembly 18, a recovery drive assembly 19, a sample returning drive assembly 20, a recovery sample buffer area 21, a recovery basket assembly 22 and a support frame 23, the recovery channel assembly 18 is connected with the sampling channel assembly 15, the recovery drive assembly 19 is installed at the recovery channel assembly 18 to provide a pushing force for the sample rack 100 to enter the recovery sample buffer area 21, the recovery sample buffer area 21 and the recovery basket assembly 22 are arranged on the support frame 23, the support frame 23 is fixedly connected with the rack assembly 4, the sample returning drive assembly 20 is located below the recovery sample buffer area 21, the conveying direction of the conveying unit of the scanning assembly 8 is perpendicular to the conveying direction of the transport track module 2, the conveying direction of the conveying unit is parallel to the conveying direction of the transport track module 2, and the conveying direction of the transport track module 2 is perpendicular to the conveying direction of the recovery track module 3. The conveying unit, the sampling channel assembly 15 and the rapid channel assembly 16 can be synchronous belt drive mechanisms.

[0035] The rack assembly is a basic frame, which is the basis and platform for the installation of other components, the sample feeding track module 1, the transport track module 2, the recovery track module 3 and the analysis module are installed on the rack assembly 4; the sample feeding drive assembly is a power system, which is a power device for pushing the sample rack to move; the basket assembly is a mechanism for placing the sample rack to be detected, which can take and place a single sample rack or a whole basket full of sample racks; the basket support frame is used for supporting the basket assembly; the scanning assembly is used for scanning and marking the sample to be detected on the sample rack, and the sample conveyed by the sample feeding drive assembly is transported to the transport track module through the transmission belt.

[0036] The sampling channel assembly is used to transport the sample rack transported from the sample track module 1 to the sampling position, the fast channel assembly is used to quickly move a part of the sample which is not needed to be detected in this step to the next detection device, the track changing assembly is used to sort the sample transported from the sample track module 1, the sample which needs to be detected in this device is sorted to the sampling channel of the sampling channel assembly by the track changing assembly, and the sample which is not needed is sorted to the fast channel assembly and transported to the next detection device, and the sampling positioning driving assembly is used to accurately position the sample rack in the sample needle sampling position.

[0037] The recycling channel assembly is used to recycle and transport the sample rack which is detected in the transmission track module 2, and the recycling channel assembly comprises a motor, a belt conveying mechanism and an optical coupling scanning counter, the recycling driving assembly is used to transport the sample rack in the recycling channel to the recycling sample buffer area, and the sample driving assembly is used to further transport the sample rack transported to the sample buffer area to the recycling basket assembly 22.

[0038] Preferably, the transmission track module 2 further comprises a conventional tail end blocking mechanism 12 and a fast tail end blocking mechanism 13 which are used to block or release the sample rack 100, the conventional tail end blocking mechanism 12 is arranged at the conveying tail end of the sampling channel assembly 15, the fast tail end blocking mechanism 13 is arranged at the conveying tail end of the fast channel assembly 16, and the transmission speed of the sample rack is appropriately stopped when the sample rack needs to be stopped.

[0039] Further, the transmission track module 2 further comprises a track changing blocking mechanism 14 which is arranged at the conveying head end of the sampling channel assembly 15, and the track changing blocking mechanism is used to appropriately stop the transmission speed of the sample rack when the sample rack needs to be stopped or needs to be transferred.

[0040] Further, the recycling sample buffer area 21 is arranged below the optical coupling assembly which is used to count the number of recycled samples.

[0041] Preferably, as shown in FIG. 1, the transmission track module 2 comprises a sample track module 1, a sampling channel assembly 15, a fast channel assembly 16, a track changing assembly 17, a sampling positioning driving assembly 18, a recycling channel assembly 19, a recycling driving assembly 20, a recycling sample buffer area 21, a recycling basket assembly 22, a conventional tail end blocking mechanism 12, a fast tail end blocking mechanism 13, a track changing blocking mechanism 14 and an optical coupling assembly. Figures 3 to 6As shown, the sample injection driving assembly 5 includes a first bearing frame 30, a first driven pulley 31a, a first synchronous belt 31b, a first driving pulley 31c, a first stepper motor 31d, a first sliding table 33, a push hand 34, a first photoelectric coupler 35, and a first positioning ruler 36. The first driven pulley 31a, the first synchronous belt 31b, the first driving pulley 31c, and the first stepper motor 31d constitute a synchronous wheel transmission mechanism installed on the first bearing frame 30. The first bearing frame 30 is provided with a first guide rail 32. The first sliding table 33 is connected with the first synchronous belt 31b and is in sliding connection with the first guide rail 32. The push hand 34 is fixedly connected with the first sliding table 33. The first positioning ruler 36 is fixedly installed on the first bearing frame 30. The first photoelectric coupler 35 is fixedly connected with the first sliding table 33. The first positioning ruler 36 has a plurality of blocking pieces capable of blocking the light transmission of the first photoelectric coupler 35. Through the cooperation of the first positioning ruler 36 and the first photoelectric coupler 35, the intermittent advancement of the push hand 34 can be realized, so that the sample is intermittently pushed to the next working link.

[0042] As shown in Figure 5 , the basket assembly 6 includes a basket mounting plate 90, a basket plate 91, a basket handle 92, a blocking strip 93, a guide strip 94, and a rear baffle 95. The basket plate 91 and the blocking strip 93 are fixedly connected to the basket mounting plate 90 and constitute an area in which the sample rack 100 can slide along the length direction of the basket plate 91. The basket mounting plate 90 is provided with a guide through slot 96 through which the push hand 34 can pass and slide. The basket supporting frame 7 also has a through slot corresponding to the guide through slot 96. The guide strip 94 is fixedly connected to the basket mounting plate 90 to provide guidance for the sample rack 100 and prevent it from deflecting. The recovery basket assembly 22 has the same structure as the basket assembly 6.

[0043] As shown in Figure 7 and Figure 8 , preferably, the rail changing assembly 10 includes a second bearing frame 40, a second driven pulley 41a, a second synchronous belt 41b, a second driving pulley 41c, a second stepper motor 41d, a second sliding table 43, a rail changing execution part 44, a second photoelectric coupler 45, and a photoelectric coupling blocking piece 46. The second driven pulley 41a, the second synchronous belt 41b, the second driving pulley 41c, and the second stepper motor 41d constitute a synchronous wheel transmission mechanism installed on the second bearing frame 40. The second bearing frame 40 is provided with a second guide rail 42. The second sliding table 43 is connected with the second synchronous belt 41b and is in sliding connection with the second guide rail 42. The rail changing execution part 44 is fixedly connected with the second sliding table 43. The photoelectric coupling blocking piece 46 is installed on the second sliding table 43. The second photoelectric coupler 45 is provided on the second bearing frame 40. The second photoelectric coupler 45 is three in number.

[0044] Preferably, as Figures 9 to 11As shown, the sampling positioning driving assembly 11 comprises a third bearing frame 50, a third driven pulley 51a, a third synchronous belt 51b, a third driving pulley 51c, a third stepper motor 51d, a third sliding table 53, a connecting plate 54, a linear module 55, a push rod 56, a sampling positioning scale 57, a limiting photoelectric coupler 58 and a telescopic blocking plate 59. The third driven pulley 51a, the third synchronous belt 51b, the third driving pulley 51c and the third stepper motor 51d constitute a synchronous wheel transmission mechanism which is installed on the third bearing frame 50. The third bearing frame 50 is provided with a third guide rail 52. The third sliding table 53 is connected with the third synchronous belt 51b and is in sliding connection with the third guide rail 52. The connecting plate 54 is fixedly connected with the third sliding table 53. The linear module 55 is arranged between the connecting plate 54 and the push rod 56, so that the push rod 56 can move forward and backward relative to the connecting plate 54. The sampling positioning scale 57 is installed on the third sliding table 53. The sampling positioning scale 57 has a number of detection flaps which is equal to that of the sample containing grooves on the sample holder 100. The limiting photoelectric coupler 58 is two in number and is installed on the third bearing frame 50.The sampling photoelectric coupler is installed on the third bearing frame 50 and located between the two limiting photoelectric couplers 58. The sampling channel assembly 15 comprises a guard plate 15a and photoelectric couplers for detecting the sample rack 100. The guard plate 15a has a long slot 15b for the push rod 56 to pass through and slide. The bottom of the push rod 56 has a protrusion towards the sampling channel assembly 15. The head end of the protrusion is rotatably connected with a roller 60. The telescopic blocking plate 59 is fixed to the third bearing frame 50. The telescopic blocking plate 59 has a slope portion 59a for driving the push rod 56 to move backward and a stop portion 59b for limiting the rightward stroke of the roller 60. When the photoelectric couplers on the sampling channel assembly 15 detect that the sample rack 100 reaches the predetermined position, the synchronous belt transmission mechanism of the sampling channel assembly 15 stops, the sampling positioning drive assembly 11 starts, the third sliding table 53 moves to the predetermined position, the linear module 55 starts to make the push rod 56 move forward, the push rod 56 passes through the long slot 15b on the guard plate 15a to fix the sample rack 100, and the push rod 56 continues to move forward until the roller 60 abuts against the guard plate 15a. Since the sampling positioning scale 57 has the same number of detection stop pieces as the sample containing grooves on the sample rack 100 and has a one-to-one correspondence, the cooperation of the sampling positioning scale 57 and the sampling photoelectric coupler can realize the intermittent rightward movement of the third sliding table 53 and thus realize the one-by-one sampling of the samples on the sample rack 100. After the sampling is completed, the third sliding table 53 drives the push rod 56 and the sample rack 100 to continue to move rightward. The roller 60 rolls on the slope portion 59a of the telescopic blocking plate 59. The slope portion 59a makes the push rod 56 move backward through the protrusion at the bottom of the push rod 56, and gradually separates from the sample rack 100. When the roller 60 reaches the flat stop portion 59b, the push rod 56 is completely separated from the sample rack 100 at this time, and the right limiting photoelectric coupler 58 is also triggered to start the synchronous belt transmission mechanism of the sampling channel assembly 15.

[0045] Further, as shown in Figure 12 The variable rail blocking mechanism 14 comprises a motor base 70, a motor 71, a stop piece 72, a clamping block 73, a blocking piece 74 and a photoelectric coupler 75. The motor base 70 and the photoelectric coupler 75 are installed on the rack assembly 4. The stop piece 72, the clamping block 73 and the blocking piece 74 are connected together and driven by the motor 71. The bottom of the blocking piece 74 has a stop piece that can block the light transmission of the photoelectric coupler 75. The motor base 70 limits the maximum rotation stroke of the stop piece 72, and thus limits the maximum rotation stroke of the blocking piece 74. The conventional tail end blocking mechanism 12 and the fast tail end blocking mechanism 13 can have the same structure as the variable rail blocking mechanism 14.

[0046] Further, as shown in Figure 13As shown, the sample return driving assembly 20 comprises a fourth bearing frame 80, a fourth driven pulley 81a, a fourth synchronous belt 81b, a fourth driving pulley 81c, a fourth stepper motor 81d, a fourth sliding table 83, a sample return shifting piece 84, a fourth photoelectric coupler 85 and a photoelectric coupling barrier 86, the fourth driven pulley 81a, the fourth synchronous belt 81b, the fourth driving pulley 81c and the fourth stepper motor 81d are mounted on the fourth bearing frame 80, the fourth bearing frame 80 is provided with a fourth guide rail 82, the fourth sliding table 83 is connected with the fourth synchronous belt 81b and is in sliding connection with the fourth guide rail 82, the sample return shifting piece 84 is fixedly connected with the fourth sliding table 83, the fourth photoelectric coupler 85 is fixedly mounted on the fourth bearing frame 80, and the photoelectric coupling barrier 86 is fixedly connected with the fourth sliding table 83.

[0047] It adopts the principle of pipeline operation, greatly expands the storage capacity of the instrument sample, solves the problem of limiting the speed and efficiency of the instrument test from the perspective of sample storage quantity, and greatly saves the labor cost; the biochemical instrument adopts the mode of track transportation of samples, which also provides strong and efficient technical support for further pipeline detection operation.

[0048] The above describes the present application by way of example, but the present application is not limited to the above specific embodiments, and any modification or change made based on the present application falls within the scope of the present application.

Claims

1. A high-speed fully-automatic biochemical analyzer characterized in that, It includes: sample track module (1), transmission track module (2), recycling track module (3), analysis module and rack assembly (4), the sample track module (1) includes sample drive assembly (5), basket assembly (6), basket support frame (7) and scanning assembly (8) for scanning the sample on the sample rack (100) and transporting the sample rack to the transmission track module, the basket support frame (7) is fixed with rack assembly (4), the basket assembly (6) is placed on the basket support frame (7) and is located above the sample drive assembly (5), the sample drive assembly (5) drives the sample rack (100) to move towards the scanning assembly (8), the scanning assembly (8) includes a transmission unit, the transmission unit is located at the conveying tail end of the sample drive assembly (5), the transmission track module (2) includes a rail changing assembly (10), a sampling channel assembly (15), a rapid channel assembly (16) and a sampling positioning drive assembly (11) for acquiring the sample rack walking on the sampling channel assembly (15) and positioning, the sampling channel assembly (15) and the rapid channel assembly (16) are arranged side by side, and the sampling channel assembly (15) is close to the analysis module, the rail changing assembly (10) is arranged at the conveying head end of the rapid channel assembly (16), for distributing the sample rack conveyed by the transmission unit to the sampling channel assembly (15) or the rapid channel assembly (16); The recycling track module (3) comprises a recycling channel assembly (18), a recycling drive assembly (19), a sample withdrawal drive assembly (20), a recycling sample buffer area (21), a recycling basket assembly (22) and a support frame (23), the recycling channel assembly (18) is connected with the sampling channel assembly (15), the recycling drive assembly (19) is installed at the recycling channel assembly (18) to provide a pushing force for the sample rack (100) to enter the recycling sample buffer area (21), the recycling sample buffer area (21) and the recycling basket assembly (22) are arranged on the support frame (23), the support frame (23) is fixedly connected with the rack assembly (4), and the sample withdrawal drive assembly (20) is located below the recycling sample buffer area (21); the sampling positioning drive assembly (11) comprises a third bearing frame (50), a third driven pulley (51a), a third synchronous belt (51b), a third driving pulley (51c), a third stepping motor (51d), a third sliding table (53), a connecting plate (54), a linear module (55), a push rod (56), a sampling positioning scale (57), a sampling photoelectric coupler, a limiting photoelectric coupler (58) and a telescopic blocking plate (59), the third driven pulley (51a), the third synchronous belt (51b), the third driving pulley (51c) and the third stepping motor (51d) constitute a synchronous wheel transmission mechanism and are installed on the third bearing frame (50), the third bearing frame (50) is provided with a third guide rail (52), the third sliding table (53) is connected with the third synchronous belt (51b) and is in sliding connection with the third guide rail (52), the connecting plate (54) is fixedly connected with the third sliding table (53), the linear module (55) is arranged between the connecting plate (54) and the push rod (56), so that the push rod (56) can move forward and backward relative to the connecting plate (54), the sampling positioning scale (57) is installed on the third sliding table (53), the sampling positioning scale (57) has a number of detection flaps equal to the number of sample containing grooves on the sample rack (100), the limiting photoelectric coupler (58) is two and is installed on the third bearing frame (50); the sampling photoelectric coupler is installed on the third bearing frame (50) and located between the two limiting photoelectric couplers (58), the sampling channel assembly (15) comprises a guard plate (15a) and a photoelectric coupler for detecting the sample rack (100), the guard plate (15a) has a long slot (15b) for the push rod (56) to pass through and slide, the bottom of the push rod (56) has a protruding portion facing the sampling channel assembly (15), the head end of the protruding portion is rotatably connected with a roller (60), the telescopic blocking plate (59) is fixedly connected with the third bearing frame (50), and the telescopic blocking plate (59) has a slope portion (59a) for driving the push rod (56) to move backward and a stop portion (59b) for limiting the rightward stroke of the roller (60).

2. The high-speed fully-automatic biochemical analyzer according to claim 1, characterized in that: The transmission track module (2) further comprises a track changing blocking mechanism (14) arranged at the delivery head of the sampling channel assembly (15).

3. The high-speed fully-automatic biochemical analyzer according to claim 1, characterized in that: A light coupling assembly is arranged below the recycled sample buffer area (21) to count the number of recycled samples.

4. The high-speed fully-automatic biochemical analyzer according to claim 1, characterized in that: The sample feeding driving assembly (5) comprises a first bearing frame (30), a first driven pulley (31a), a first synchronous belt (31b), a first driving pulley (31c), a first stepping motor (31d), a first sliding table (33), a push hand (34), a first photoelectric coupler (35) and a first positioning ruler (36). The first driven pulley (31a), the first synchronous belt (31b), the first driving pulley (31c) and the first stepping motor (31d) constitute a synchronous wheel transmission mechanism and are installed on the first bearing frame (30). The first bearing frame (30) is provided with a first guide rail (32). The first sliding table (33) is connected with the first synchronous belt (31b) and is in sliding connection with the first guide rail (32). The push hand (34) is fixedly connected with the first sliding table (33). The first positioning ruler (36) is fixedly installed on the first bearing frame (30). The first photoelectric coupler (35) is fixedly connected with the first sliding table (33). The first positioning ruler (36) has a plurality of blocking pieces capable of blocking the light transmission of the first photoelectric coupler (35).

5. The high-speed fully-automatic biochemical analyzer according to claim 4, characterized in that: The basket assembly (6) comprises a basket mounting plate (90), a basket plate (91), a basket handle (92), a blocking strip (93), a guide strip (94) and a rear baffle (95). The basket plate (91) and the blocking strip (93) are fixedly connected to the basket mounting plate (90) and constitute an area in which a sample rack (100) can slide along the length direction of the basket plate (91). The basket mounting plate (90) is provided with a guide through slot (96) through which the push hand (34) can pass and slide. The basket support frame (7) is also provided with a through slot corresponding to the guide through slot (96). The guide strip (94) is fixedly connected to the basket mounting plate (90) to provide guidance for the sample rack (100).

6. The high-speed fully-automatic biochemical analyzer according to claim 1, characterized in that: The variable orbit assembly (10) comprises a second bearing frame (40), a second driven pulley (41a), a second synchronous belt (41b), a second driving pulley (41c), a second stepper motor (41d), a second sliding table (43), a variable orbit execution part (44), a second photoelectric coupler (45) and a photoelectric coupling baffle (46). The second driven pulley (41a), the second synchronous belt (41b), the second driving pulley (41c) and the second stepper motor (41d) constitute a synchronous wheel transmission mechanism installed on the second bearing frame (40). The second bearing frame (40) is provided with a second guide rail (42). The second sliding table (43) is connected with the second synchronous belt (41b) and is in sliding connection with the second guide rail (42). The variable orbit execution part (44) is fixedly connected with the second sliding table (43). The photoelectric coupling baffle (46) is installed on the second sliding table (43). The second photoelectric coupler (45) is provided on the second bearing frame (40). The second photoelectric coupler (45) is at least two.

7. The high-speed fully-automatic biochemical analyzer according to claim 2, characterized in that: The variable orbit blocking mechanism (14) comprises a motor seat (70), a motor (71), a stop piece (72), a clamping block (73), a blocking piece (74) and a photoelectric coupler (75). The motor seat (70) and the photoelectric coupler (75) are installed on the rack assembly (4). The stop piece (72), the clamping block (73) and the blocking piece (74) are connected together and are driven by the motor (71). The blocking piece (74) has a baffle at the bottom, which can block the light transmission of the photoelectric coupler (75). The motor seat (70) limits the maximum rotation stroke of the stop piece (72).

8. The high-speed fully-automatic biochemical analyzer according to claim 1, characterized in that: The sample returning driving assembly (20) comprises a fourth bearing frame (80), a fourth driven pulley (81a), a fourth synchronous belt (81b), a fourth driving pulley (81c), a fourth stepper motor (81d), a fourth sliding table (83), a sample returning shifting piece (84), a fourth photoelectric coupler (85) and a photoelectric coupling blocking piece (86). The fourth driven pulley (81a), the fourth synchronous belt (81b), the fourth driving pulley (81c) and the fourth stepper motor (81d) constitute a synchronous wheel transmission mechanism installed on the fourth bearing frame (80). The fourth bearing frame (80) is provided with a fourth guide rail (82). The fourth sliding table (83) is connected with the fourth synchronous belt (81b) and is in sliding connection with the fourth guide rail (82). The sample returning shifting piece (84) is fixedly connected with the fourth sliding table (83). The fourth photoelectric coupler (85) is fixedly installed on the fourth bearing frame (80). The photoelectric coupling blocking piece (86) is fixedly connected with the fourth sliding table (83).

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