Blocking mechanism and sample placing rack blocking system

Abstract

The utility model discloses a blocking mechanism and a sample placing rack blocking system, in the process of moving from a feeding end to a discharging end through a sliding space, a sample placing rack passes through a pushing position and is blocked by a blocking block to stop at a blocking position, and after the sample placing rack stops at the blocking position, the sample placing rack is blocked by the blocking block to stop at the discharging end. The driving assembly can drive the pushing block to move to the blocking position in the direction from the pushing position to the blocking position, meanwhile, the driving assembly can drive the blocking block to rotate to the opening position from the blocking position, and after pushing of the sample containing frame is completed, the pushing block is driven by the driving assembly to return to the pushing position from the blocking position; the pushing block rotates to the avoiding position at the pushing position, meanwhile, the driving assembly drives the stopping block to rotate to the stopping position from the opening position, and at the stopping position, on the basis that linkage of the pushing block and the stopping block is achieved, overshoot of the sample containing frame is prevented, the system risk is reduced, the continuous operation function is achieved, and the return efficiency of the whole stopping mechanism is also improved; the power is saved, and the integration degree is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a blocking mechanism and a sample placement rack blocking system. Background Art

[0002] In the field of in vitro diagnosis, fully automatic analyzers are generally equipped with channels for receiving and transferring samples and / or reagents between the supply side and the analysis side. At present, the test speed of high-throughput analyzers (such as 600T / h fully automatic forensic luminescence analyzers, or higher throughput) is relatively high, so the transmission speed of the channel must also be increased accordingly. However, the impulse of the high-speed transmitted samples / sample racks is also significantly increased, making it difficult to accurately control the status of the samples / sample racks.

[0003] For example, if the sample / sample placement rack is allowed to complete the entire transfer process in a high-impulse state, overshoot may easily occur at the channel exit, making it difficult to control the operating state of the sample / sample placement rack. Currently, one way to solve this problem is to set a blocking structure at the channel exit. However, this solution will significantly reduce the transmission rate of the channel and affect the working efficiency of the analyzer. Utility Model Content

[0004] The main purpose of the utility model is to provide a blocking mechanism and a sample placement rack blocking system, aiming to solve the technical problems of overshoot and reduced transmission efficiency when the sample placement rack changes from a moving state to a stopped state in the related art.

[0005] To achieve the above objectives, in a first aspect, the utility model provides a blocking mechanism, comprising:

[0006] A base, wherein two ends of the base respectively form a loading end and a unloading end, and one side of the base forms a sliding space for the sample placement rack to slide from the loading end to the unloading end;

[0007] A pushing component, the pushing component comprising a driving component and a pushing block, the driving component being mounted on the base and being located between the loading end and the unloading end, the pushing block being rotatably mounted on the driving component and being able to rotate relative to the driving component between a pushing position extending into the sliding space and an avoiding position avoiding the sliding space, and the driving component drives the pushing block to slide between the loading end and the unloading end; and,

[0008] The blocking component includes a transmission assembly and a blocking block, the transmission assembly is rotatably mounted on the base, the transmission assembly is connected to the blocking block, the blocking block is located at the unloading end, and the blocking block is mounted on the transmission assembly, the driving assembly can slide to connect with the transmission assembly to drive the blocking block to rotate between the blocking position and the open position.

[0009] Optionally, the driving assembly comprises:

[0010] A guide rail, the guide rail is mounted on the base, and the guide rail extends in a direction from the loading end to the unloading end;

[0011] a sliding member, the sliding member slidably cooperates with the guide rail, and the pushing block is rotatably mounted on the sliding member; and,

[0012] A driving member is connected to the sliding member to drive the sliding member to slide along the guide rail.

[0013] Optionally, the pushing block is rotatably mounted on the sliding member via a rotating shaft, a torsion spring is sleeved on the rotating shaft, one torsion arm of the torsion spring is connected to the sliding member, and the other torsion arm of the torsion spring is connected to the pushing block.

[0014] Optionally, the driving assembly further comprises a toggle member, which is rotatably mounted on the sliding member, the toggle member is spaced apart from the pushing block and is located on the side of the pushing block facing the feeding end, and the toggle member is used to toggle the transmission assembly to drive the blocking block to rotate between the blocking position and the opening position.

[0015] Optionally, the transmission assembly includes a transmission block and a transmission rod, the transmission block is located at the loading end, the transmission rod extends from the loading end toward the unloading end, the transmission block is connected to the blocking block via the transmission rod, and the transmission rod is connected to the base via a bearing seat, a groove extending spirally from the loading end toward the unloading end is formed on the transmission block, and the toggle member can slide in cooperation with the groove to toggle the transmission rod to drive the blocking block to rotate between the blocking position and the open position.

[0016] Optionally, the transmission block includes a first mounting position and a second mounting position that are relatively arranged, the first mounting position is located on a side of the transmission block close to the sliding space, the groove is formed at the first mounting position, an avoidance groove is formed on the second mounting position, and a first sensor for sensing the avoidance groove is also installed at a position of the base corresponding to the avoidance groove.

[0017] Optionally, a sensing plate is installed in the avoidance groove, and the first sensor is used to sense the sensing plate when the blocking block is located at the blocking position.

[0018] Optionally, two second sensors for sensing the driving component are respectively installed at positions of the base close to the loading end and the unloading end.

[0019] Based on the same technical concept, in the second aspect, the utility model proposes a sample placement rack blocking system, comprising:

[0020] The blocking mechanism of the first aspect; and

[0021] The conveying mechanism comprises a conveying platform, the blocking mechanism is installed on one side of the conveying platform, and the position of the conveying platform close to the blocking mechanism forms a slideway, the slideway forms a conveying space for conveying the sample placement rack, the two ends of the slideway form an open feeding end and a discharging end, the discharging end is arranged close to the discharging end, and the loading end is located between the feeding end and the discharging end.

[0022] Optionally, the slideway is formed by enclosing a first vertical plate and a second vertical plate that are spaced apart, the first vertical plate being located on the side where the blocking mechanism is located, and a notch is formed in the first vertical plate near the discharge end, the notch wall of the notch being used to abut against the push block and push the push block to rotate from the first blocking position to the avoidance position when the driving assembly drives the push block to move from the loading end to the unloading end, and the side of the first vertical plate that is away from the slide slot is used to slide and abut against the push block in the avoidance position; and / or,

[0023] Two third sensors for sensing the sample placement rack are respectively arranged at positions of the conveying platform close to the feeding end and the discharging end.

[0024] The utility model has the following beneficial effects:

[0025] The lifting mechanism of the lifting device is a key factor in the lifting of the lifting device, and the lifting of the lifting device is keyed to the lifting of the lifting device, so that the lifting device can be easily retracted and the lifting of the lifting device can be effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the structure of a blocking mechanism according to an example of the present utility model;

[0028] Figure 2 for Figure 1 The structural diagram of the feeding end of the example is a blocking mechanism;

[0029] Figure 3 for Figure 1 A structural schematic diagram of a toggle member from one perspective of the example;

[0030] Figure 4 for Figure 1 A structural schematic diagram of the toggle member of the example from another perspective;

[0031] Figure 5 for Figure 1 A structural schematic diagram of the blocking mechanism of the example from another perspective;

[0032] Figure 6 This is a schematic diagram of the structure of the sample placement rack blocking system of the utility model;

[0033] Figure 7 for Figure 6A schematic structural diagram of another perspective of the sample placement rack blocking system of the example;

[0034] Figure 8 for Figure 6 The schematic diagram of the structure of the push block in the example in the avoidance position;

[0035] Fig. 9 for Figure 6 The schematic diagram of the structure of the push block in the example of the utility model when it is in the push position.

[0036] Description of reference numerals:

[0037]

[0038]

[0039] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various mechanisms under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0044] The utility model concept of the utility model is further explained below in conjunction with some specific implementation methods.

[0045] The utility model provides a blocking mechanism and a sample placement rack blocking system.

[0046] like Figures 1 to 9 As shown, an embodiment of the blocking mechanism 10, the blocking system of the sample placement rack 30 and the blocking method of the present invention is proposed.

[0047] In this embodiment, please refer to Figure 1-Figure 5 The blocking mechanism 10 includes a base 100, a pushing component 200 and a blocking component 300. The two ends of the base 100 form a loading end 110 and a unloading end 120, respectively. One side of the base 100 forms a sliding space 130 for the sample placement rack 30 to slide from the loading end 110 to the unloading end 120. The pushing component 200 includes a driving component 210 and a pushing block 220. The driving component 210 is installed on the base 100 and is located between the loading end 110 and the unloading end 120. The pushing block 220 is rotatably installed on the driving component 210 and can extend into the sliding space 130 relative to the driving component 210. The blocking block 320 rotates between the pushing position 230 and the avoidance position 240 avoiding the sliding space 130, and the driving component 210 drives the pushing block 220 to slide between the loading end 110 and the unloading end 120. The blocking component 300 includes a transmission component 350 and a blocking block 320. The transmission component 350 is rotatably mounted on the base 100. The transmission component 350 is connected to the blocking block 320. The blocking block 320 is located at the unloading end 120, and the blocking block 320 is mounted on the transmission component 350. The driving component 210 can slide to connect with the transmission component 350 to drive the blocking block 320 to rotate between the blocking position 330 and the opening position 340.

[0048] In the present embodiment, during the process of the sample rack 30 moving from the loading end 110 through the sliding space 130 to the unloading end 120, the sample rack 30 will pass through the pushing position 230 and be blocked by the blocking block 320 and stop at the blocking position 330. After the sample rack 30 stops at the blocking position 330, the driving component 210 will drive the pushing block 220 to move from the pushing position 230 to the blocking position 330 to the blocking position 330. At the same time, the driving component 210 will also drive the blocking block 320 to rotate from the blocking position 330 to the opening position 340. On the basis of realizing the linkage between the pushing block 220 and the blocking block 320, the sample rack 30 is pushed out of the sliding space 1 from the unloading end 120. 30. After the sample rack 30 is pushed, the driving component 210 drives the pushing block 220 to return from the blocking position 330 to the pushing position 230, and rotates to the avoidance position 240 at the pushing position 230. At the same time, the driving component 210 drives the blocking block 320 to rotate from the opening position 340 to the blocking position 330, and at the blocking position 330. Therefore, the utility model can effectively prevent the overshoot of the sample rack 30 on the basis of realizing the linkage between the pushing block 220 and the blocking block 320, reduce the system risk, realize the function of continuous operation, improve the return efficiency of the entire blocking mechanism 10, save power and improve the degree of integration.

[0049] In some specific embodiments, the driving assembly 210 includes a guide rail 211, a sliding member 212 and a driving member 214. The guide rail 211 is installed on the base 100, and the guide rail 211 extends in a direction from the loading end 110 to the unloading end 120. The sliding member 212 slides with the guide rail 211, and the pushing block 220 is rotatably installed on the sliding member 212. The driving member 214 is connected to the sliding member 212 to drive the sliding member 212 to slide along the guide rail 211.

[0050] In this embodiment, by providing a guide rail 211, a driving member 214 and a sliding member 212, the push block 220 is installed on the sliding member 212, so that when the utility model is in use, the first driving member 214 can slide stably on the substrate along the guide rail 211, thereby improving the stability of the entire blocking mechanism 10.

[0051] In some specific embodiments, a side of the pushing block 220 close to the loading end 110 forms an inclined surface, and the inclined surface is inclined from the loading end 110 toward the unloading end 120 in a direction close to the sliding space 130 .

[0052] In this embodiment, an inclined surface is formed on the side of the pushing block 220 close to the loading end 110, and the inclined surface is inclined from the loading end 110 to the unloading end 120 in the direction close to the sliding space 130, so that when the pushing block 220 rotates from the pushing position 230 to the avoidance position 240, a better rotation function can be achieved through the inclined edge set on the pushing block 220.

[0053] In some specific embodiments, the pushing block 220 is rotatably mounted on the sliding member 212 via a rotating shaft, and a torsion spring 215 is sleeved on the rotating shaft. One torsion arm of the torsion spring 215 is connected to the sliding member 212, and the other torsion arm of the torsion spring 215 is connected to the pushing block 220; the torsion spring 215 is used to push the pushing block 220 from the avoidance position 240 back to the pushing position 230 when the sample placement rack 30 and the pushing block 220 are out of contact.

[0054] In this embodiment, when in use, the pushing block 220 rotates from the pushing position 230 to extend out of the sliding space 130 and is in the avoidance position 240, so that the torsion spring 215 and the torsion arm connected to the pushing block 220 are energy stored, and the torsion spring 215 will release the stored energy. At this time, the torsion spring 215 can drive the pushing block 220 to automatically rotate from the avoidance position 240 to extend into the sliding space 130 and be in the pushing position 230, so as to realize the blocking function, thereby making the utility model have the function of automatic resetting when in use, thereby improving the degree of automation of the entire blocking mechanism 10.

[0055] In some specific embodiments, the driving assembly 210 further includes a toggle member 216, which is rotatably mounted on the sliding member 212, and the toggle member 216 is spaced apart from the pushing block 220 and is located on a side of the pushing block 220 facing the loading end 110;

[0056] The transmission assembly 350 is rotatably mounted on the base 100 . The transmission assembly 350 is connected to the blocking block 320 . The toggle member 216 is used to toggle the transmission assembly 350 to drive the blocking block 320 to rotate between the blocking position 330 and the opening position 340 .

[0057] In this embodiment, by providing a toggle member 216, when the toggle member 216 contacts the transmission assembly 350 under the drive of the driving member 214, the toggle member 216 can toggle the transmission assembly 350 to drive the blocking block 320 to move between the blocking position 330 and the opening position 340, thereby making it possible for the utility model to use a set of driving assemblies 350 to simultaneously manage and drive the functions of the pushing block 220 and the blocking block 320 when in use, thereby reducing energy consumption and improving the degree of integration.

[0058] It should be noted that, in the present embodiment, in specific use, since the groove 353 formed on the transmission block 351 is arc-shaped and the groove 353 does not go around the transmission block 351, the utility model drives the transmission block 351 to rotate only a certain angle through the arranged toggle member 216, and thus the rotation angle of the blocking block 320 will not be greater than 180°, which can avoid excessive rotation of the rotating block 320 and ensure the working efficiency of the entire blocking system. Of course, in the exemplary embodiment, the transmission assembly 350 includes a transmission block 351 and a transmission rod 352, the transmission block 351 is located at the feeding end 110, the transmission rod 352 extends from the feeding end 110 toward the unloading end 120, the transmission block 351 is connected to the blocking block 320 through the transmission rod 352, and the transmission rod 352 is connected to the base 100 through the bearing seat, and a groove 353 extending spirally from the feeding end 110 toward the unloading end 120 is formed on the transmission block 351, and the toggle member 216 can slide with the groove 353 to toggle the transmission rod 352 to drive the blocking block 320 to rotate between the blocking position 330 and the opening position 340. Through this setting, the utility model can have a stable sliding effect when in use, which improves the safety of the entire blocking mechanism 10 during operation.

[0059] In some preferred embodiments, the transmission block 351 includes a first installation position and a second installation position that are relatively arranged, the first installation position is located at a side of the transmission block 351 close to the sliding space 130, the groove 353 is formed at the first installation position, and the second installation position is formed with an avoidance groove 354, and the base 100 is further installed with a first sensor 355 for sensing the avoidance groove 354 at a position corresponding to the avoidance groove 354. This allows the transmission block 351 to have high stability during the process of being toggled by the toggle member during use, thereby preventing the blocking block 320 from being unable to block the sliding space 130 due to excessive toggling.

[0060] In some specific embodiments, a sensing plate 356 is installed in the avoidance groove 354 , and the first sensor 355 is used to sense the sensing plate 356 when the blocking block is located at the blocking position 330 .

[0061] In this embodiment, in the process of using the driving member 214 to drive the toggle block to drive the transmission block 351 to rotate, the sensing plate 356 arranged in the avoidance groove 354 will rotate with the transmission block 351, so that the sensing plate 356 can be sensed by the first sensor 355, and then the rotation result of the entire blocking block 320 can be obtained according to the sensing result, and it is accurate to know whether the blocking block 320 is in the blocking position 330 or the open position 340, thereby improving safety.

[0062] It should be particularly and clearly stated that in this embodiment, during specific implementation, when the first sensor 355 senses the sensing plate 356, the push block 220 should be in the avoidance position 240, and the blocking block should be in the blocking position 330 and blocked in the sliding space 130; and when the first sensor 355 fails to sense the sensing plate 356, the push block 220 should be in the push position 230, and the blocking block 320 should be in the open position 340 and cause the sample placement rack 30 in the sliding space 130 to slide out and leave the sliding space 130.

[0063] In some specific embodiments, two second sensors 400 for sensing the driving component 210 are respectively installed at positions of the base 100 close to the loading end 110 and the unloading end 120 .

[0064] In this embodiment, by setting up a second sensor 400, the second sensor 400 respectively set at the loading end 110 and the unloading end 120 is used to sense the driving component 210, so that it can accurately determine whether the driving component 210 has moved into place and specifically whether it is at the loading end 110 or the unloading end 120, thereby avoiding overshoot of the entire driving component 210 and improving safety, thereby enabling the utility model to achieve continuous operation.

[0065] It should be particularly and clearly stated that, in the present embodiment, the first sensor 355 and the second sensor 400 may be, but are not limited to, optical coupling sensors, distance sensors or infrared sensors that have been maturely used in the prior art, and other equipment or devices with automatic sensing functions. In the present embodiment, only the first sensor 355 and the second sensor 400 are used without improving or designing the structures thereof, so they will not be described one by one here. However, it can be illustrated that the first sensor 355 and the second sensor 400 illustrated in the present embodiment are preferably optical coupling sensors.

[0066] Based on the same technical concept, in the second aspect, the utility model proposes a sample placement rack blocking system, comprising:

[0067] The blocking mechanism 10 illustrated in the above embodiments; and

[0068] The conveying mechanism 20 includes a conveying platform, a blocking mechanism 10 is installed on one side of the conveying platform, and a slide 21 is formed at a position of the conveying platform close to the blocking mechanism 10, the slide 21 forms a conveying space for conveying the sample placement rack 30, and two ends of the slide 21 form an open feeding end 22 and a discharging end 23, the unloading end 120 is arranged close to the discharging end 23, and the loading end 110 is located between the feeding end 22 and the discharging end 23.

[0069] In this embodiment, when used specifically, the sample rack 30 is first moved from the feed end 22 along the slide 21 to the feed end 110 and enters the sliding space 130. At this time, the driving component 210 drives the push block 220 to rotate from the push position 230 extending into the sliding space 130 to the avoidance position 240 extending out of the sliding space 130. At the same time, the transmission component 350 drives the blocking block 320 to extend into the sliding space 130 and be in the blocking position 330. At the same time, the sample rack 30 continues to move in the sliding space 130 to the unloading end. 120 and stays at the unloading end 23, preventing the sample rack 30 from overshooting and reducing system risks. At the same time, the transmission component 350 continues to drive the blocking block 320 to rotate from the blocking position 330 to the extended open position 340 and open the sliding space 130, and enables the driving component 350 to drive the pushing block 220 to rotate from the avoidance position 240 to the pushing position 230 to push the sample rack 30 out from the unloading end, thereby enabling the sample rack 30 to be moved out of the sliding space 130 from the unloading end 23, thereby improving the automation efficiency.

[0070] Of course, in some specific embodiments, the slide 21 is formed by a first vertical plate 24 and a second vertical plate 26 that are spaced apart. The first vertical plate 24 is located on the side where the blocking mechanism 10 is located. A gap is formed on the first vertical plate 24 near the discharge end 23. The gap wall is used to abut against the push block 220 and push the push block 220 to rotate from the push position 230 to the avoidance position 240 when the driving component 210 drives the push block 220 to move from the loading end 110 to the unloading end 120, and the side of the first vertical plate 24 away from the slide is used to slide and abut against the push block 220 in the avoidance position 240.

[0071] In this embodiment, a notch is formed on one side of the first vertical plate 24 near the discharge end 120, so that the notch wall of the notch is used to abut against the push block 220 and push the push block 220 to rotate from the push position 230 to the avoidance position 240 when the driving component 210 drives the push block 220 to move from the loading end 110 to the discharge end 120, and the side of the first vertical plate 24 away from the slide groove is used to slide and abut against the push block 220 in the avoidance position 240, so that the driving component 210 will drive the push block 220 to rotate to the avoidance position 240, and then it can be blocked outside the sliding space 130 by the notch of the first vertical plate 24, thereby causing avoidance between the push block 220 and the sample placement rack 30, thereby improving the transfer efficiency when transferring the sample placement rack 30.

[0072] In some specific embodiments, two third sensors 25 for sensing the sample placement rack 30 are respectively disposed near the feeding end 22 and the discharging end 23 of the conveying platform.

[0073] Of course, in this embodiment, by respectively arranging the third sensor 25 at the positions of the feed end 22 and the discharge end 23, the utility model can utilize the third sensor 25 to accurately sense and determine whether there is a sample rack 30 in the feed end 22, the discharge end 23 and the entire slide 21 when in use, and thus the utility model can determine the working state of the blocking mechanism 10 according to the sensing of the third sensor 25 when in use, thereby effectively improving the automation effect of the entire sample rack 30 blocking system.

[0074] It should be particularly and clearly stated that, in the present embodiment, the third sensor 25 exemplified can be, but is not limited to, optical coupling sensors, distance sensors, infrared sensors, and other devices or apparatuses with automatic sensing functions that have been maturely applied in the prior art. In the present embodiment, only the third sensor 25 itself is applied without any improvement or design, so it will not be described one by one here. However, it can be illustrated that the third sensor 25 exemplified in the present embodiment is preferably an optical coupling sensor.

[0075] The above description is only an optional embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A blocking mechanism, characterized in that: include: A base, wherein two ends of the base respectively form a loading end and a unloading end, and one side of the base forms a sliding space for the sample placement rack to slide from the loading end to the unloading end; A pushing component, the pushing component comprising a driving component and a pushing block, the driving component being mounted on the base and being located between the loading end and the unloading end, the pushing block being rotatably mounted on the driving component and being able to rotate relative to the driving component between a pushing position extending into the sliding space and an avoiding position avoiding the sliding space, and the driving component drives the pushing block to slide between the loading end and the unloading end; and, The blocking component includes a transmission assembly and a blocking block, the transmission assembly is rotatably mounted on the base, the transmission assembly is connected to the blocking block, the blocking block is located at the unloading end, and the blocking block is mounted on the transmission assembly, the driving assembly can slide to connect with the transmission assembly to drive the blocking block to rotate between the blocking position and the open position.

2. The blocking mechanism according to claim 1, characterized in that: The drive assembly comprises: A guide rail, the guide rail is mounted on the base, and the guide rail extends in a direction from the loading end to the unloading end; a sliding member, the sliding member slidably cooperates with the guide rail, and the pushing block is rotatably mounted on the sliding member; and, A driving member is connected to the sliding member to drive the sliding member to slide along the guide rail.

3. The blocking mechanism according to claim 2, characterized in that: The pushing block is rotatably mounted on the sliding member via a rotating shaft, a torsion spring is sleeved on the rotating shaft, one torsion arm of the torsion spring is connected to the sliding member, and the other torsion arm of the torsion spring is connected to the pushing block.

4. The blocking mechanism according to claim 2, characterized in that: The driving assembly also includes a toggle member, which is rotatably mounted on the sliding member. The toggle member is spaced apart from the pushing block and is located on a side of the pushing block facing the feeding end. The toggle member is used to toggle the transmission assembly to drive the blocking block to rotate between the blocking position and the opening position.

5. The blocking mechanism according to claim 4, characterized in that: The transmission assembly includes a transmission block and a transmission rod, the transmission block is located at the loading end, the transmission rod extends from the loading end toward the unloading end, the transmission block is connected to the blocking block through the transmission rod, and the transmission rod is connected to the base through a bearing seat, and a groove extending spirally in the direction from the loading end toward the unloading end is formed on the transmission block, and the toggle member can slide with the groove to toggle the transmission rod to drive the blocking block to rotate between the blocking position and the open position.

6. The blocking mechanism according to claim 5, characterized in that: The transmission block includes a first mounting position and a second mounting position which are relatively arranged. The first mounting position is located on a side of the transmission block close to the sliding space. The groove is formed at the first mounting position. An avoidance groove is formed on the second mounting position. A first sensor for sensing the avoidance groove is also installed at a position of the base corresponding to the avoidance groove.

7. The blocking mechanism according to claim 6, characterized in that: A sensing plate is installed in the avoidance groove, and the first sensor is used for sensing the sensing plate when the blocking block is located at the blocking position.

8. The blocking mechanism according to any one of claims 1 to 7, characterized in that: Two second sensors for sensing the driving component are respectively installed at positions of the base close to the loading end and the unloading end.

9. A sample rack blocking system, characterized in that: include: The blocking mechanism according to any one of claims 1 to 8; and The conveying mechanism comprises a conveying platform, the blocking mechanism is installed on one side of the conveying platform, and the position of the conveying platform close to the blocking mechanism forms a slideway, the slideway forms a conveying space for conveying the sample placement rack, the two ends of the slideway form an open feeding end and a discharging end, the discharging end is arranged close to the discharging end, and the loading end is located between the feeding end and the discharging end.

10. The sample placement rack blocking system according to claim 9, characterized in that: The slideway is formed by enclosing a first vertical plate and a second vertical plate which are spaced apart, the first vertical plate being located on the side where the blocking mechanism is located, and a notch is formed on the first vertical plate near the discharge end, and a notch wall of the notch is used to abut against the push block and push the push block to rotate from the first blocking position to the avoidance position when the driving assembly drives the push block to move from the loading end to the unloading end, and a side of the first vertical plate which is away from the slideway is used to slide against the push block in the avoidance position; and / or, Two third sensors for sensing the sample placement rack are respectively arranged at positions of the conveying platform close to the feeding end and the discharging end.

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