Laboratory sample rack

Abstract

The present invention discloses a laboratory sample rack, comprising a base, a support frame and a sample tube fixing plate, wherein the upper surface of the base has a buffer layer, the lower end of the support frame is connected to the base, the sample tube fixing plate has a sample tube placement hole, the sample tube fixing plate is arranged above the base, the sample tube placement hole is within the upward projection range of the buffer layer, and the support frame is used to support and fix the sample tube fixing plate. The laboratory sample rack provided by the present invention can reduce the collision between the sample tube and the sample rack, and avoid the sample tube from bouncing up when placing the sample tube, causing the sample to spill and cause contamination.

Description

Technical Field

[0001] The invention relates to the technical field of laboratory instruments, in particular to a laboratory sample rack. Background Art

[0002] Sample racks are indispensable practical tools in chemical laboratories, biological laboratories, independent medical laboratories and hospital laboratories, especially in independent medical laboratories and hospital laboratories, where samples need to be stored at 2-8°C for 7 to 14 days, and the sample volume is large, so a large number of sample racks need to be stockpiled. Traditional sample racks are fixed hard-bottom structures, which have several main disadvantages: 1. Traditional sample racks cannot be folded, occupy a large space, and need to find a large number of storage cabinets or rooms for storage, which is inconvenient in transportation, packaging, and storage, resulting in reduced space utilization for users or producers; 2. In order to ensure the accuracy of sample test data, medical laboratories have high requirements for indoor environment, and need to regularly disinfect the room where the sample racks are placed. The existing sample racks occupy a large space, which will produce a large number of dead corners, and cannot be disinfected by ultraviolet or sprayed with disinfectant, and have high requirements for infectious viruses and genetic testing. 1. It is easy to cause contamination during experimental testing, resulting in false positive test results and inaccurate results; 2. The bottom of the traditional sample rack is very hard. During the test of the sample tube opening, the sample tube with a large amount of sample will be directly collided with the bottom of the sample rack when it is played back, causing the sample to splash. Cuts, punctures and splashes are the main factors in occupational exposure, which is easy to cause occupational exposure; 3. After the sample in the sample tube splashes, it falls on the ground where the sample rack is placed to form a contaminated area. The splashed sample will spread around the ground, causing the contaminated area to spread, increasing the possibility of occupational exposure, and it is not convenient to clean up the splashed sample. Summary of the invention

[0003] The present invention aims to provide a laboratory sample rack, which can reduce the collision between a sample tube and the sample rack, and avoid the sample tube from bouncing up when placing the sample tube, causing the sample to spill and cause pollution.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] The laboratory sample rack disclosed in the present invention comprises a base, a support frame and a sample tube fixing plate, wherein the upper surface of the base is provided with a buffer layer, the lower end of the support frame is connected to the base, the sample tube fixing plate is provided with a sample tube placement hole, the sample tube fixing plate is arranged above the base, the sample tube placement hole is within the upward projection range of the buffer layer, and the support frame is used to support and fix the sample tube fixing plate.

[0006] The beneficial effects of the present invention are as follows: when the sample tube is opened for inspection, a buffer layer is provided on the base, and in the process of placing the sample tube in the sample tube placement hole, the bottom of the sample tube contacts the buffer layer after passing through the sample tube placement hole, and the impact of the base on the sample tube is small, which can prevent the sample in the sample tube from splashing out of the opening of the sample tube due to distance oscillation caused by the impact of the bottom of the sample tube, thereby causing occupational exposure of laboratory operators.

[0007] Furthermore, the support frame is vertically provided with a first slide rail, and the sample tube fixing plate is slidably matched with the support frame via the first slide rail, and the sample tube fixing plate and / or the support frame have a locking mechanism for locking the position of the sample tube fixing plate on the support frame.

[0008] The beneficial effect of adopting the above further scheme is that the sample tube fixing plate can slide along the first slide rail, and the height of the sample tube fixing plate can be adjusted according to the length of the sample tube. After the sample tube fixing plate is moved to a suitable height, it is locked by a locking mechanism, and the sample tube placed on the sample tube fixing plate is more stable.

[0009] Further, the support frame includes a left bracket and a right bracket, the left bracket and the right bracket both have the first slide rail and the lower ends of the first slide rails on the left bracket and the right bracket are open, the left and right sides of the sample tube fixing plate are respectively slidably matched with the first slide rails on the left bracket and the right bracket, the first slide rails of the left bracket and the right bracket are both provided with the locking mechanism, the lower end of the left bracket is hinged to the left side of the base, the lower end of the right bracket is hinged to the right side of the base, the left bracket and the right bracket are hinged to the base above the upper surface of the base, the gap between the hinge of the left bracket and the right bracket to the upper surface of the base is used for placing the sample tube fixing plate when the left bracket and the right bracket are folded, the left side of the base has a left limiting piece for preventing the left bracket from turning outward to the left, and the right side of the base has a right limiting piece for preventing the right bracket from turning outward to the right.

[0010] The beneficial effect of adopting the above-mentioned further scheme is that when the sample tube is not placed, the sample tube fixing plate can be slid down and placed on the upper surface of the base, and the left bracket and the right bracket can be folded toward the middle. The sample tube fixing plate, the left bracket and the right bracket can be folded away. When not in use, they occupy little space, which is conducive to storage, transportation and packaging. When the laboratory is disinfected, the folded and folded sample rack has little obstruction to the disinfection work, which greatly reduces the dead corners of laboratory disinfection, is conducive to achieving a qualified experimental environment, and improves the accuracy of the test results in the laboratory. The left bracket and the right bracket both have a first slide rail and slide with the left and right sides of the sample tube fixing plate respectively, so that when the sample tube fixing plate is between the left bracket and the right bracket, the left bracket and the right bracket are limited to fold toward the middle. The left limit plate and the right limit plate on the base can limit the left bracket and the right bracket from folding outward. When the left bracket and the right bracket are opened, the stability is good.

[0011] Furthermore, a second slide rail corresponding to the first slide rail is provided in the gap between the hinge of the left bracket and the right bracket and the upper surface of the base, and the sample tube fixing plate slides in cooperation with the second slide rail, and the second slide rail is used to prevent the sample tube fixing plate from falling out from the front or rear side when the left bracket and the right bracket are folded.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that the left and right sides of the sample tube fixing plate slide in cooperation with the second slide rail, and the sample tube fixing plate can only slide up and down but cannot move forward and backward, which can prevent the sample tube fixing plate from sliding out from the front or back when the left bracket and the right bracket are folded. The second slide rail corresponds to the first slide rail, so that when the left bracket and the right bracket are opened, the sample tube fixing plate can slide directly from the second slide rail below into the first slide rail above, and no misalignment will occur to affect the lifting of the sample tube fixing plate.

[0013] Furthermore, the locking mechanism includes a slider adapted to the first slide rail, a locking rod, a strip through hole arranged on the slider, and a locking groove arranged on the side wall of the first slide rail, the slider is fixedly connected to the left and / or right side of the sample tube fixing plate, the strip through hole is parallel to the sample tube fixing plate and the strip through hole passes through the slider front and back, the locking rod is adapted to the strip through hole and the locking groove, one end of the locking groove passes through the surface of the first slide rail facing the sample tube fixing plate, the other end of the locking groove is sealed and the sealed end of the locking groove is in the locking Below the open end of the groove, the locking grooves are correspondingly arranged on both sides of the first slide rail, and the first slide rail is provided with multiple pairs of locking grooves above and below, the locking rod portion is in the strip through hole and the locking rod portion is at the sealed end of the locking groove, the locking rod, the strip through hole and the locking groove cooperate to lock the sample tube fixing plate at the position corresponding to the locking groove in which the locking rod is embedded, one end of the strip through hole is at the sealed end of the locking groove, and the other end of the strip through hole is at a distance from the surface of the first slide rail facing the sample tube fixing plate that is greater than the width of the locking rod.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that when the sample tube fixing plate slides up and down in cooperation with the first slide rail through the slider, the locking rod is in the strip through hole and outside the locking groove. After the sample tube fixing plate slides up and down to a suitable position, the locking rod is pushed to move to its sealing end through the locking groove. The locking rod, the strip through hole and the locking groove cooperate to lock the position of the sample tube fixing plate. Locking and unlocking are convenient, and the stability is good after locking.

[0015] Furthermore, the first slide rails are provided at the front and rear sides of the support frame, the locking grooves on the first slide rails on the front and rear sides of the support frame correspond, the sample tube fixing plate and the positions corresponding to the first slide rails on the front and rear sides of the support frame are provided with sliders, the strip through holes on the sliders before and after the sample tube fixing plate are directly opposite, all the sliders are correspondingly embedded in the first slide rails, the locking rod passes through the strip through holes on the sliders provided before and after the sample tube fixing plate, and the sealing ends of the locking grooves corresponding to the first slide rails provided before and after the support frame jointly support the locking rod.

[0016] The beneficial effect of adopting the above further solution is that the sample tube fixing plate and the support frame are more stable when sliding and after being locked, preventing the sample tube fixing plate from tilting forwards and backwards.

[0017] Furthermore, a limiting portion protrudes outward from the side of the sample tube fixing plate, and the limiting portion is between the sliding blocks arranged in front and behind the sample tube fixing plate, and the limiting portion is above the strip-shaped through hole. The width of the limiting portion is equal to the distance between the opposite side walls of the first slide rails arranged in front and behind the support frame, and the limiting portion is used to limit the forward and backward movement of the sample tube fixing plate.

[0018] The beneficial effect of adopting the above further scheme is: the limiting part limits the forward and backward movement of the sample tube fixing plate to avoid breaking at the connection between the slider and the sample tube fixing plate; the limiting part is above the strip through hole, which facilitates the locking rod to pass through the strip through holes on both sides, thereby avoiding processing difficulties caused by punching in the limiting part.

[0019] Furthermore, the locking groove includes a transverse groove and a vertical groove, the lower end of the vertical groove is a sealed end of the locking groove, the upper end of the vertical groove is connected to the end of the transverse groove away from the sample tube fixing plate, the end of the transverse groove close to the sample tube fixing plate passes through the first slide rail toward the sample tube fixing plate, and the surface of the sample tube fixing plate serves as the open end of the locking groove, and the transverse groove and the vertical groove have a smooth transition.

[0020] The beneficial effect of adopting the above further solution is that when the locking groove, the strip-shaped through hole and the locking rod are locked, the locking rod is in the vertical groove, the locking is more stable, and the horizontal groove and the vertical groove have a smooth transition, which facilitates the locking rod to move from the horizontal groove to the vertical groove.

[0021] Furthermore, the sample tube fixing plates include two pieces, the two sample tube fixing plates are arranged up and down, and the sample tube placement holes on the two sample tube fixing plates are correspondingly arranged.

[0022] The beneficial effect of adopting the above further scheme is that the bottom of the sample tube passes through the sample tube placement holes of the upper sample tube fixing plate and the lower sample tube fixing plate from top to bottom and then contacts the buffer layer, making the sample tube fixation more stable and preventing the sample tube placed on the sample rack from tilting.

[0023] Furthermore, the buffer layer is made of a highly water-absorbent material.

[0024] The beneficial effect of adopting the above further scheme is that even if a small amount of sample splashes out from the sample tube, the splashed sample is absorbed and fixed by the buffer layer, preventing the splashed sample from spreading around and causing the contaminated area to spread, reducing the possibility of occupational exposure and facilitating the cleaning of the splashed sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of an embodiment of the present invention;

[0026] Figure 2 is a top view of the sample tube fixing plate;

[0027] Figure 3 It is the front view of the sample tube fixing plate;

[0028] Figure 4 is a schematic diagram of the connection between the first slide rail and the sample tube fixing plate;

[0029] In the figure: 1, base; 11, buffer layer; 12, second slide rail; 21, right bracket; 22, left bracket; 23, first slide rail; 24, locking groove; 241, vertical groove; 242, horizontal groove; 3, sample tube fixing plate; 31, sample tube placement hole; 32, slider; 33, limiter; 34, locking rod; 35, strip through hole; 41, left limiter; 42, right limiter; DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1-Figure 4 As shown, an embodiment of a laboratory sample rack disclosed in the present invention comprises a base 1, a support frame and a sample tube fixing plate 3. The upper surface of the base 1 has a buffer layer 11, and the buffer layer 11 is made of a highly absorbent material, such as a sponge. The vertical projections of the base 1 and the sample tube fixing plate 3 are both corresponding rectangles. The lower end of the support frame is connected to the base 1. The sample tube fixing plate 3 has a plurality of sample tube placement holes 31. The sample tube fixing plate 3 is arranged above the base 1, and the sample tube placement holes 31 are within the upward projection range of the buffer layer 11. The support frame is used to support and fix the sample tube fixing plate 3. The sample tube fixing plate 3 comprises two pieces, and the two sample tube fixing plates 3 are arranged up and down. The sample tube placement holes 31 on the two sample tube fixing plates 3 correspond to each other, and the two sample tube fixing plates 3 are both connected to the support frame and are both above the base 1.

[0032] As a further solution of the above embodiment, the support frame is vertically provided with a first slide rail 23, and the sample tube fixing plate 3 is slidably matched with the support frame through the first slide rail 23. The sample tube fixing plate 3 and / or the support frame are provided with a locking mechanism for locking the position of the sample tube fixing plate 3 on the support frame.

[0033] Specifically, the support frame includes a left bracket 22 and a right bracket 21, and both the left bracket 22 and the right bracket 21 have a first slide rail 23, and the lower ends of the first slide rails 23 on the left bracket 22 and the right bracket 21 are open, and the lower ends of the first slide rails 23 are arc-shaped, which is convenient for rotation. The left and right sides of the sample tube fixing plate 3 are respectively slidably matched with the first slide rails 23 on the left bracket 22 and the right bracket 21, and the first slide rails 23 of the left bracket 22 and the right bracket 21 are both provided with a locking mechanism. The lower end of the left bracket 22 is hinged to the left side of the base 1, and the lower end of the right bracket 21 is hinged to the right side of the base 1. The left bracket 22 and the right bracket 21 are hinged to the base 1 at the base 1. Above the upper surface, the gap between the hinge of the left bracket 22 and the right bracket 21 and the upper surface of the base 1 is used to place the sample tube fixing plate 3 when the left bracket 22 and the right bracket 21 are folded. The left side of the base 1 has a left limiting piece 41 for preventing the left bracket 22 from turning outward to the left, and the right side of the base 1 has a right limiting piece 42 for preventing the right bracket 21 from turning outward to the right. The left limiting piece 41 and the right limiting piece 42 are both vertically arranged right-angle plates. The two corners on the left side of the base 1 have the left limiting piece 41, and the two corners on the right side of the base 1 have the right limiting piece 42. The left limiting piece 41 and the right limiting piece 42 can be fixedly connected to the base 1 by welding.

[0034] As a further solution of the above embodiment, a second slide rail 12 corresponding to the first slide rail 23 is provided at the gap between the hinge of the left bracket 22 and the right bracket 21 and the upper surface of the base 1. The distance between the upper end and the lower end of the second slide rail 12 is greater than the sum of the thicknesses of the two sample tube fixing plates 3. The upper end of the second slide rail 12 is open, and the opening at the upper end of the second slide rail 12 is opposite to the opening at the lower end of the first slide rail 23. The sample tube fixing plate 3 is slidably matched with the second slide rail 12. The second slide rail 12 is used to prevent the sample tube fixing plate 3 from falling out from the front or back when the left bracket 22 and the right bracket 21 are folded.

[0035] The locking mechanism includes a slider 32 adapted to the first slide rail 23, a locking rod 34, a strip through hole 35 arranged on the slider 32, and a locking groove 24 arranged on the side wall of the first slide rail 23. The left and right sides of the sample tube fixing plate 3 are fixedly connected with the slider 32. The slider 32 and the sample tube fixing plate 3 can be integrally formed or the slider 32 can be welded to the sample tube fixing plate 3. The strip through hole 35 is parallel to the sample tube fixing plate 3 and the strip through hole 35 passes through the slider 32 front and back. The locking rod 34 is adapted to the strip through hole 35 and the locking groove 24. One end of the locking groove 24 passes through the surface of the first slide rail 23 facing the sample tube fixing plate 3, and the other end of the locking groove 24 is sealed and the locking groove 2 The sealed end of 4 is below the open end of the locking groove 24, and locking grooves 24 are correspondingly arranged on both sides of the first slide rail 23. The first slide rail 23 is provided with multiple pairs of locking grooves 24 above and below. The locking rod 34 is partially in the strip through hole 35 and the locking rod 34 is partially at the sealed end of the locking groove 24. The locking rod 34, the strip through hole 35 and the locking groove 24 cooperate to lock the sample tube fixing plate 3 at the position corresponding to the locking groove 24 embedded with the locking rod 34. One end of the strip through hole 35 is at the sealed end of the locking groove 24, and the other end of the strip through hole 35 is at a distance from the surface of the first slide rail 23 facing the sample tube fixing plate 3 that is greater than the width of the locking rod 34, and the end of the locking rod 34 passes through the slider 32.

[0036] Specifically, the locking groove 24 includes a transverse groove 242 and a vertical groove 241. The lower end of the vertical groove 241 is the sealed end of the locking groove 24, and the upper end of the vertical groove 241 is connected to the end of the transverse groove 242 away from the sample tube fixing plate 3. The end of the transverse groove 242 close to the sample tube fixing plate 3 passes through the first slide rail 23 toward the sample tube fixing plate 3. The surface of the sample tube fixing plate 3 serves as the open end of the locking groove 24, and the transverse groove 242 and the vertical groove 241 have a smooth transition.

[0037] The locking mechanism may also be other existing locking mechanisms for locking the sliding member, such as a locking mechanism of a telescopic umbrella handle of an umbrella, a locking mechanism in which an elastic button cooperates with a locking hole, and the like.

[0038] The left bracket 22 and the right bracket 21 are both provided with first slide rails 23 at the front and rear sides, and the locking grooves 24 on the first slide rails 23 at the front and rear sides of the support frame correspond to each other. The first slide rails 23 on the left bracket 22 and the first slide rails 23 on the right bracket 21 are arranged opposite to each other, and the positions of the sample tube fixing plate 3 corresponding to the first slide rails 23 at the front and rear sides of the support frame are provided with sliders 32, that is, two sliders 32 are arranged at the front and rear sides of the left and right sides of the sample tube fixing plate 3, and the bar-shaped through holes 35 on the sliders 32 at the front and rear of the sample tube fixing plate 3 are opposite to each other, and all the sliders 32 are correspondingly embedded in the first slide rails 23, that is, The front and rear sliders 32 on the left side of the sample tube fixing plate 3 are correspondingly embedded in the front and rear first slide rails 23 on the left bracket 22, and the front and rear sliders 32 on the right side of the sample tube fixing plate 3 are correspondingly embedded in the front and rear first slide rails 23 on the right bracket 21. The strip-shaped through holes 35 of the sliders 32 on the left and right sides of the sample tube fixing plate 3 are both provided with locking rods 34. The left and right locking rods 34 respectively pass through the strip-shaped through holes 35 on the sliders 32 arranged front and rear on the left and right sides of the sample tube fixing plate 3, and the sealing ends of the locking grooves 24 corresponding to the first slide rails 23 arranged front and rear on the left bracket 22 and the right bracket 21 jointly support the locking rods 34.

[0039] The sample tube fixing plate 3 has a limiting portion 33 protruding outward on the left and right sides. The limiting portion 33 is between the sliders 32 set in front and behind the corresponding sample tube fixing plate 3, and is above the strip through hole 35. The limiting portion 33 is a rectangular plate. The upper and lower surfaces of the limiting portion 33 are flush with the upper and lower surfaces of the sample tube fixing plate 3, respectively. The limiting portion 33 can be integrally formed with the sample tube fixing plate 3, and the strip through hole 35 is below the sample tube fixing plate 3. The width of the limiting portions 33 on both sides is equal to the distance between the opposite side walls of the first slide rails 23 set in front and behind the left bracket 22 and the right bracket 21, respectively. The limiting portion 33 is used to limit the forward and backward movement of the sample tube fixing plate 3.

[0040] When the sample tube is not placed on the sample tube fixing plate 3, the sample tube fixing plate 3 is slid down to the second slide rail 12 and placed on the upper surface of the base 1. The left bracket 22 and the right bracket 21 are folded and gathered toward the middle for easy storage, transportation and packaging. The space utilization rate is low. When the laboratory is disinfected, the sample rack has less obstruction to the laboratory, the laboratory has fewer disinfection dead corners, and the pollution sources in the laboratory are thoroughly disinfected, thereby improving the accuracy of the test results in the laboratory. When the sample rack is needed to place the sample tube, the left bracket 22 and the right bracket 21 are opened, the two sample tube fixing plates 3 are slid up to the appropriate position, and the locking rods 34 in the sliders 32 on both sides of the sample tube fixing plate 3 are pulled out from the corresponding locking grooves 24. The open end of the fixed groove 24 is pushed into the locking groove 24, and the locking rods 34 on both sides are pushed to the corresponding sealed ends of the locking grooves 24 to fix the sample tube fixing plate 3. The bottom of the sample tube passes through the corresponding sample tube placement holes 31 on the two sample tube fixing plates 3 from top to bottom and contacts the buffer layer 11 on the base 1, which can reduce the impact when the bottom of the sample tube contacts the base 1 and reduce the possibility of the sample in the sample tube splashing out of the sample tube. When the sample in the sample tube is full and some of the sample still splashes out when placed, the splashed sample is absorbed and fixed by the buffer layer 11, which can avoid the splashed sample from spreading and causing the pollution source to expand. The splashed sample is fixed by the buffer layer 11, which is convenient for cleaning after use.

[0041] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A laboratory sample rack, characterized in that: The invention comprises a base (1), a support frame and a sample tube fixing plate (3); the upper surface of the base (1) is provided with a buffer layer (11); the lower end of the support frame is connected to the base (1); the sample tube fixing plate (3) is provided with a sample tube placement hole (31); the sample tube fixing plate (3) is arranged above the base (1); the sample tube placement hole (31) is within the upward projection range of the buffer layer (11); and the support frame is used to support and fix the sample tube fixing plate (3); The support frame is vertically provided with a first slide rail (23), the sample tube fixing plate (3) is slidably matched with the support frame via the first slide rail (23), and the sample tube fixing plate (3) and / or the support frame are provided with a locking mechanism for locking the position of the sample tube fixing plate (3) on the support frame; The locking mechanism comprises a slider (32) adapted to the first slide rail (23), a locking rod (34), a strip through hole (35) arranged on the slider (32), and a locking groove (24) arranged on the side wall of the first slide rail (23); the slider (32) is fixedly connected to the left and / or right side of the sample tube fixing plate (3); the strip through hole (35) is parallel to the sample tube fixing plate (3) and the strip through hole (35) passes through the slider (32) front and back; the locking rod (34) is adapted to the strip through hole (35) and the locking groove (24); one end of the locking groove (24) passes through the first slide rail (23) toward the surface of the sample tube fixing plate (3); the other end of the locking groove (24) is sealed and the sealed end of the locking groove (24) is located in the locking groove (2 4), the locking grooves (24) are correspondingly arranged on both sides of the first slide rail (23), and the first slide rail (23) is provided with a plurality of pairs of the locking grooves (24) above and below, the locking rod (34) is partially in the strip-shaped through hole (35) and the locking rod (34) is partially at the sealing end of the locking groove (24), the locking rod (34), the strip-shaped through hole (35) and the locking groove (24) cooperate to lock the sample tube fixing plate (3) at a position corresponding to the locking groove (24) in which the locking rod (34) is embedded, one end of the strip-shaped through hole (35) is at the sealing end of the locking groove (24), and the distance between the other end of the strip-shaped through hole (35) and the surface of the first slide rail (23) facing the sample tube fixing plate (3) is greater than the width of the locking rod (34); The first slide rails (23) are arranged at the front side and the rear side of the support frame, the locking grooves (24) on the first slide rails (23) on the front side and the rear side of the support frame correspond, the positions of the sample tube fixing plate (3) corresponding to the first slide rails (23) on the front side and the rear side of the support frame are provided with the sliders (32), the strip-shaped through holes (35) on the sliders (32) before and after the sample tube fixing plate (3) are directly opposite, all the sliders (32) are correspondingly embedded in the first slide rails (23), the locking rod (34) passes through the strip-shaped through holes (35) on the sliders (32) arranged before and after the sample tube fixing plate (3), and the sealing ends of the locking grooves (24) corresponding to the first slide rails (23) arranged before and after the support frame jointly support the locking rod (34); The locking groove (24) comprises a transverse groove (242) and a vertical groove (241); the lower end of the vertical groove (241) is the sealed end of the locking groove (24); the upper end of the vertical groove (241) is connected to the end of the transverse groove (242) away from the sample tube fixing plate (3); the end of the transverse groove (242) close to the sample tube fixing plate (3) passes through the first slide rail (23) and faces the surface of the sample tube fixing plate (3) of the sample tube fixing plate (3) as the open end of the locking groove (24); the transverse groove (242) and the vertical groove (241) are smoothly transitioned.

2. The laboratory sample rack according to claim 1, characterized in that: The support frame comprises a left side support (22) and a right side support (21), the left side support (22) and the right side support (21) both have the first slide rail (23), and the lower ends of the first slide rails (23) on the left side support (22) and the right side support (21) are open, the left side and the right side of the sample tube fixing plate (3) are respectively slidably matched with the first slide rails (23) on the left side support (22) and the right side support (21), the first slide rails (23) of the left side support (22) and the right side support (21) are both provided with the locking mechanism, the lower end of the left side support (22) is hinged to the left side of the base (1), and the right side support (21) is hinged to the left side of the base (1). The lower end of the bracket (21) is hinged to the right side of the base (1); the left bracket (22) and the right bracket (21) are hinged to the base (1) at a position above the upper surface of the base (1); the gap between the hinge of the left bracket (22) and the right bracket (21) and the upper surface of the base (1) is used to place the sample tube fixing plate (3) when the left bracket (22) and the right bracket (21) are folded; the left side of the base (1) has a left limiting plate (41) for preventing the left bracket (22) from turning outward to the left; the right side of the base (1) has a right limiting plate (42) for preventing the right bracket (21) from turning outward to the right.

3. The laboratory sample rack according to claim 2, characterized in that: A second slide rail (12) corresponding to the first slide rail (23) is provided at the gap between the hinge of the left bracket (22) and the right bracket (21) and the upper surface of the base (1), and the sample tube fixing plate (3) is slidably matched with the second slide rail (12). The second slide rail (12) is used to prevent the sample tube fixing plate (3) from falling out from the front or rear side when the left bracket (22) and the right bracket (21) are folded.

4. The laboratory sample rack according to claim 1, characterized in that: The side edge of the sample tube fixing plate (3) protrudes outwardly with a limiting portion (33), the limiting portion (33) is between the sliding blocks (32) arranged before and after the sample tube fixing plate (3), the limiting portion (33) is above the strip-shaped through hole (35), the width of the limiting portion (33) is equal to the distance between the opposite side walls of the first slide rail (23) arranged before and after the support frame, and the limiting portion (33) is used to limit the forward and backward movement of the sample tube fixing plate (3).

5. The laboratory sample rack according to any one of claims 1 to 4, characterized in that: The sample tube fixing plates (3) include two pieces, the two sample tube fixing plates (3) are arranged up and down, and the sample tube placement holes (31) on the two sample tube fixing plates (3) are arranged correspondingly.

6. The laboratory sample rack according to any one of claims 1 to 4, characterized in that: The buffer layer (11) is made of a highly water-absorbent material.

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