Novel environmental protection material centrifuge tube anti-external force detection device

Abstract

The application relates to the field of vessel detection, in particular to a novel centrifugal tube anti-external force detection device made of environment-friendly material, which comprises a machine table, a mechanical hand fixedly installed on the machine table, the mechanical hand being used for grabbing a centrifugal tube and placing the centrifugal tube on a tube-in detection assembly; a tube-in detection assembly and a tube-out detection assembly are respectively installed on the machine table; the tube-in detection assembly comprises a first pressure sensor, an electric push rod, a telescopic piece and an air bag capable of fixing the centrifugal tube, the telescopic end of the electric push rod is fixedly connected with a mounting plate, the side, away from the electric push rod, of the mounting plate is fixedly connected with a hollow tube, the hollow tube is provided with a fixing piece used for fixing the centrifugal tube, and the air bag is slidably sleeved on the hollow tube. The application can perform single item anti-external force detection and centrifugal tube inner and outer wall simultaneous anti-external force detection operation, and can perform tube body air tightness detection on the centrifugal tube during the detection process, and can determine the size of the external force suffered by the centrifugal tube when the tube wall is broken.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of utensil detection, and particularly relates to a novel centrifuge tube made of environment-friendly material and capable of resisting external force. BACKGROUND

[0002] A centrifuge tube is a tubular sample container used in laboratories and industrial applications, mainly used for separating and analyzing particles or components in liquid suspensions through centrifugal force. The centrifuge tube is usually composed of a tube body and a tube cover, and the tube cover is designed in two types of connected cover and independent cover, facilitating one-handed operation. The bottom of the tube body is designed in three types of pointed bottom, round bottom or standable, respectively suitable for different centrifugal scenes. The environment-friendly centrifuge tube is mainly made of degradable materials, and can be harmlessly treated after use, reducing the harm to the environment.

[0003] In combination with the prior art, the centrifuge tube anti-external force detection device can only perform single detection when testing the anti-external force of the centrifuge tube. When testing the inner and outer walls of the centrifuge tube, different test equipment needs to be replaced to detect the inner and outer walls of the centrifuge tube, thus causing inconvenience to the operation of the detection personnel. In addition, the air tightness of the centrifuge tube is not detected in the detection process, so it is difficult to detect that the centrifuge tube cannot effectively determine the leakage and cracking conditions when subjected to a certain external force. SUMMARY

[0004] In view of the above problems, the application provides a novel centrifuge tube made of environment-friendly material and capable of resisting external force, which comprises a machine table, a mechanical hand fixedly installed on the machine table, the mechanical hand being used for grabbing a centrifuge tube and placing the centrifuge tube on a tube inner detection assembly;

[0005] A tube inner detection assembly and a tube outer detection assembly are respectively installed on the machine table.

[0006] The tube inner detection assembly is used for stress detection of the inner wall of the centrifuge tube.

[0007] The tube outer detection assembly is used for stress detection of the outer wall of the centrifuge tube.

[0008] The tube inner detection assembly comprises a first pressure sensor, an electric push rod, a telescopic piece, and an air bag capable of fixing the centrifuge tube, the telescopic end of the electric push rod is fixedly connected with a mounting plate, the side, away from the electric push rod, of the mounting plate is fixedly connected with a hollow tube, the hollow tube is provided with a fixing piece used for fixing the centrifuge tube, the air bag is slidably sleeved on the hollow tube, the first pressure sensor is installed in the hollow tube through a connecting piece, and the detection head of the first pressure sensor is located on the outside of the hollow tube, and the telescopic piece is installed in the hollow tube and can drive the first pressure sensor to move.

[0009] Further, the pipe outer detection assembly comprises a guide groove and a motor, the motor is fixedly installed on the upper end of the guide groove, a screw rod is rotatably installed in the guide groove, the output end of the motor is in transmission connection with the screw rod, two opposite moving screw rod bases are threadedly installed on the screw rod, and the screw rod bases are installed with a second pressure sensor through a connecting plate.

[0010] Further, the telescopic part comprises a taper pipe and a fixed pipe, the taper pipe is slidably installed in the fixed pipe, the fixed pipe is arranged in the hollow pipe, a first spring is fixedly connected in the fixed pipe, the other end of the first spring is fixedly connected with the taper pipe, and the end of the fixed pipe away from the taper pipe is communicated with an air pump.

[0011] Further, the fixed part comprises a fixed plate, a movable plate and a connecting rod mechanism, the fixed plate is fixedly installed on the hollow pipe, the air bag is fixedly installed on the fixed plate, the movable plate is slidably installed on the hollow pipe, one side of the movable plate is fixedly connected with the air bag, the connecting rod mechanism is in transmission connection with the movable plate, and the connecting rod mechanism is arranged on the hollow pipe.

[0012] Further, the connecting rod mechanism comprises a transmission rod and a pushing rod, the transmission rod is hingedly installed on the hollow pipe, the transmission rod is movably riveted with the pushing rod, one end of the pushing rod is hingedly connected with the movable plate, and the transmission rod can abut against the inner wall of the hollow pipe.

[0013] Further, the connecting plate is fixedly installed with a clamping part, the clamping part comprises a clamping plate and an elastic part, the elastic part can abut against the centrifugal tube, the elastic part is arranged on the side of the clamping plate, and the clamping plate is arranged on the connecting plate.

[0014] Further, the top of the taper pipe is provided with a rotatable turnover plate, the hollow pipe is communicated with an air outlet pipe on the side away from the mounting plate, the end of the hollow pipe is fixedly installed with a third pressure sensor for detecting air pressure, the air outlet pipe can abut against the turnover plate, and the side of the turnover plate is fixedly connected with a second spring for driving the turnover plate to reset.

[0015] Further, the machine table is fixedly installed with a support, the support is fixedly installed with a linear guide rail, and a laser displacement sensor is fixedly installed on the sliding part of the linear guide rail.

[0016] Further, the connecting part comprises a third spring, a pipe sleeve and a connecting piece capable of abutting against the taper pipe, one end of the third spring is fixedly connected with the inner wall of the hollow pipe, the other end of the third spring is fixedly connected with the connecting piece, the pipe sleeve is slidably inserted on the side wall of the hollow pipe, the connecting piece is fixedly connected with the pipe sleeve, and the first sensor is arranged in the pipe sleeve.

[0017] Further, the mounting plate is provided as a hollow plate, the mounting plate is communicated with the hollow tube, the exhaust pipe of the fixed tube penetrates the side of the mounting plate, and the exhaust valve is arranged on the exhaust pipe of the fixed tube.

[0018] The beneficial effects of the present application are:

[0019] 1、The application can detect the outer wall and the inner wall of the centrifugal tube against external force, can perform single direction item external force detection and centrifugal tube inner and outer wall external force detection operation, and can detect the tube body airtightness of the centrifugal tube during the detection process, can determine the external force of the centrifugal tube when the tube wall is broken, and can effectively improve the detection quality.

[0020] 2、In the process of sleeving the centrifugal tube, the inner wall of the centrifugal tube is in contact with the transmission rod, the end of the transmission rod is raised, the driving rod is driven to move upward at the riveting point, the other end of the driving rod pushes the movable plate to extrude the air bag, the air bag is deformed and tightly attached to the tube wall of the centrifugal tube, so that the fixation of the centrifugal tube is completed, the sealing of the centrifugal tube can be maintained during the fixation of the centrifugal tube, and the subsequent sealing detection of the centrifugal tube is facilitated.

[0021] 3、Through the work of the air pump, the fixed tube is supplied with gas, the gas pushes the cone pipe to move along the fixed tube, the connecting piece is extruded in the moving process of the cone pipe, the connecting piece pushes the tube sleeve to drive the first pressure sensor to be attached to the inner wall of the centrifugal tube, when the gas continues to be introduced, the cone pipe moves, the sensing part of the first pressure sensor pressurizes the inner wall of the centrifugal tube, the centrifugal tube inner wall is detected against external force, and the air inlet pipe of the exhaust pipe pushes the turning plate to open, so that the cone pipe is communicated with the exhaust pipe, air is injected into the centrifugal tube, and the third pressure sensor detects the air pressure in the centrifugal tube. While detecting the centrifugal tube inner wall against external force, the air pressure in the centrifugal tube can be detected, and the stress of the tube body when the tube body is broken can be tested.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structures indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 A schematic diagram of the structure according to an embodiment of the present invention is shown.

[0025] Figure 2 An isometric schematic diagram of an in-tube detection assembly according to an embodiment of the present invention is shown.

[0026] Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0027] Figure 4 An isometric schematic diagram of an external detection assembly according to an embodiment of the present invention is shown.

[0028] Figure 5 An embodiment of the present invention is shown. Figure 4 Enlarged schematic diagram of section B in the middle.

[0029] Figure 6 A schematic diagram of a hollow tube according to an embodiment of the present invention is shown.

[0030] Figure 7 An embodiment of the present invention is shown. Figure 6 Enlarged schematic diagram of the C-section structure.

[0031] Figure 8 An isometric schematic diagram of a linkage structure according to an embodiment of the present invention is shown.

[0032] Figure 9 An exploded view of the telescopic component according to an embodiment of the present invention is shown.

[0033] Figure 10 A schematic diagram of a tapered tube according to an embodiment of the present invention is shown.

[0034] In the diagram: 1. Machine base; 2. In-tube detection assembly; 201. First pressure sensor; 202. Electric push rod; 203. Telescopic component; 2031. Tapered tube; 2032. Fixed tube; 2033. First spring; 2034. Air pump; 204. Airbag; 205. Mounting plate; 206. Hollow tube; 3. Out-of-tube detection assembly; 301. Guide groove; 302. Motor; 303. Lead screw; 304. Lead screw seat; 305. Second pressure sensor; 4. Fixed component. Components; 401, Fixed plate; 402, Movable plate; 5, Linkage mechanism; 501, Transmission rod; 502, Push rod; 6, Connecting plate; 7, Clamping component; 701, Clamping plate; 702, Elastic component; 8, Bracket; 9, Linear guide rail; 10, Laser displacement sensor; 11, Connecting component; 12, Third spring; 13, Tube sleeve; 14, Connecting piece; 15, Third pressure sensor; 16, Robotic arm; 17, Air outlet pipe; 18, Flipping plate; 19, Second spring. DETAILED DESCRIPTION

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] The embodiment of the present application provides a new type of centrifuge tube anti-external force detection device of environmental protection material, refer to Figures 1-10 , including machine table 1, the mechanical hand is fixedly installed on the machine table 1, and the mechanical hand is used for grabbing the centrifuge tube and placing on the tube inner detection assembly 2;

[0037] The machine table 1 is respectively provided with the tube inner detection assembly 2 and the tube outer detection assembly 3;

[0038] The tube inner detection assembly 2 is used for stress detection on the inner wall of the centrifuge tube;

[0039] The tube outer detection assembly 3 is used for stress detection on the outer wall of the centrifuge tube;

[0040] The tube inner detection assembly 2 includes a first pressure sensor 201, an electric push rod 202, a telescopic piece 203, and a gas bag 204 capable of fixing the centrifuge tube, the telescopic end of the electric push rod 202 is fixedly connected with a mounting plate 205, the side, away from the electric push rod 202, of the mounting plate 205 is fixedly connected with a hollow tube 206, the hollow tube 206 is provided with a fixing piece 4 for fixing the centrifuge tube, the gas bag 204 is slidably sleeved on the hollow tube 206, the first pressure sensor 201 is installed in the hollow tube 206 through a connecting piece 11, and the detection head of the first pressure sensor 201 is located outside the hollow tube 206, the telescopic piece 203 is installed in the hollow tube 206, and the telescopic piece 203 can drive the first pressure sensor 201 to move;

[0041] Specifically, refer to Figure 6 And Figure 8 The fixing piece 4 includes a fixed plate 401, a movable plate 402 and a connecting rod mechanism 5, the fixed plate 401 is fixedly installed on the hollow tube 206, the gas bag 204 is fixedly installed on the fixed plate 401, the movable plate 402 is slidably installed on the hollow tube 206, one side of the movable plate 402 is fixedly connected with the gas bag 204, the connecting rod mechanism 5 is in transmission connection with the movable plate 402, and the connecting rod mechanism 5 is arranged on the hollow tube 206.

[0042] When the centrifuge tube is taken off, the extrusion of the centrifuge tube on the transmission rod 501 is removed, the air bag 204 is restored, the movable plate is pushed to reset, the movable plate pushes the push rod to reset, thereby driving the transmission rod to reset, which can be automatically reset, reducing manual operation and facilitating subsequent fixing operation on other centrifuge tubes.

[0043] Specifically, referring to Figure 6 and Figure 8 , the connecting rod mechanism 5 includes a transmission rod 501 and a push rod 502, the transmission rod 501 is hingedly installed on the hollow tube 206, the transmission rod 501 is movably riveted with the push rod 502, one end of the push rod 502 is hingedly connected with the movable plate 402, and the transmission rod 501 can abut against the inner wall of the hollow tube 206.

[0044] It should be noted that the surface of the transmission rod 501 abutting against the inner wall of the centrifuge tube is an inclined surface.

[0045] With the above scheme, when the centrifuge tube is subjected to external force resistance detection, the centrifuge tube sleeve 13 is sleeved on the tube inner detection assembly 2 by the mechanical hand, in the process of sleeving the centrifuge tube, the inner wall of the centrifuge tube abuts against the transmission rod 501, the end of the transmission rod 501 is lifted, the push rod 502 is driven to move upward at the riveting point, the other end of the push rod 502 pushes the movable plate 402, the air bag 204 is extruded, the air bag 204 is deformed and tightly attached to the wall of the centrifuge tube, so that the centrifuge tube is fixed and a part of the centrifuge tube is sealed, then the electric push rod 202 works to drive the fixed centrifuge tube to move to the tube outer detection assembly 3 area, the motor 302 works to drive the lead screw 303 to rotate, so that the two lead screw seats 304 relatively move along the guide groove 301, and the clamping piece 7 clamps the centrifuge tube, the motor 302 continues to work, the lead screw seat 304 drives the second sensor to contact the centrifuge tube, and the pressure is continuously increased, so as to simulate the influence of external extrusion on the centrifuge tube body, and the external force resistance of the outer wall of the centrifuge tube can be detected.

[0046] The fixed pipe 2032 is supplied with gas by the air pump, and after the gas enters the fixed pipe 2032, the gas pushes the conical pipe 2031 to move along the fixed pipe 2032. The conical pipe 2031 extrudes the connecting piece 14 during the movement, so that the connecting piece 14 pushes the sleeve 13 to drive the first pressure sensor 201 to be attached to the inner wall of the centrifugal pipe. When the gas continues to be supplied, the conical pipe 2031 moves, so that the sensing part of the first pressure sensor 201 pressurizes the inner wall of the centrifugal pipe, and the air inlet pipe of the air outlet pipe pushes the turnover plate to open, so that the conical pipe 2031 is in communication with the air outlet pipe 17. The third pressure sensor 15 detects the air pressure in the centrifugal pipe. While the inner wall of the centrifugal pipe is subjected to the external force detection, the air pressure in the centrifugal pipe can be detected. If the air pressure decreases or remains unchanged, it indicates that the centrifugal pipe leaks during the continuous pressurization of the first pressure sensor 201. The data transmitted by the first pressure sensor and the third pressure sensor 15 can be compared to determine the size of the external force required for the pipe body to leak.

[0047] The above structure can detect the external force of the outer wall and the inner wall of the centrifugal pipe, and can detect the external force of the single direction item and the external wall of the centrifugal pipe at the same time. During the detection process, the pipe body air tightness of the centrifugal pipe can be detected, and the size of the external force suffered by the centrifugal pipe when the pipe wall leaks can be determined, which can effectively improve the detection quality.

[0048] For example, refer to Figures 3-5 The pipe outer detection assembly 3 includes a guide groove 301 and a motor 302. The motor 302 is fixedly installed at the upper end of the guide groove 301. A lead screw 303 is rotatably installed in the guide groove 301. The output end of the motor 302 is in transmission connection with the lead screw 303. Two opposite moving lead screw seats 304 are threadedly installed on the lead screw 303. The second pressure sensor 305 is installed on the lead screw seat 304 through the connecting plate 6.

[0049] By using the above scheme, the motor 302 drives the lead screw 303 to rotate, so as to drive the two lead screw seats to move relatively, and drive the second pressure sensor 305 on the connecting plate 6 to move relatively. The centrifugal pipe between the second pressure sensors 305 is subjected to pipe body outer wall extrusion external force detection. The required pressure for testing the deformation and damage of the centrifugal pipe in the extrusion environment can be simulated, which is convenient for the detection personnel to operate.

[0050] Specifically, refer to Figure 9 and Figure 10The telescopic part 203 comprises a taper pipe 2031 and a fixed pipe 2032, the taper pipe 2031 is slidingly installed in the fixed pipe 2032, the fixed pipe 2032 is arranged in the hollow pipe 206, a first spring 2033 is fixedly connected in the fixed pipe 2032, the other end of the first spring 2033 is fixedly connected with the taper pipe 2031, and the end, away from the taper pipe 2031, of the fixed pipe 2032 is communicated with an air pump 2034.

[0051] It should be noted that the side wall of the taper pipe 2031 is provided with a rubber ring slidingly matched with the inner wall of the fixed pipe 2032;

[0052] The first spring 2033 is used for driving the taper pipe 2031 to reset.

[0053] Specifically, when the fixed pipe 2032 is ventilated, the gas pushes the taper pipe 2031 to move along the fixed pipe 2032, when the taper pipe 2031 drives the turnover plate to move to abut against the air inlet end of the air outlet pipe 17, the turnover plate is lifted by the air outlet pipe 17, so that the air outlet pipe 17 is communicated with the taper pipe 2031, the gas pumped by the air pump can enter the air outlet pipe, and then enter the centrifugal pipe, so as to detect the air tightness of the centrifugal pipe, therefore, the top of the taper pipe 2031 is provided with a turnover plate 18 capable of rotating, one side of the hollow pipe 206, away from the mounting plate 205, is communicated with an air outlet pipe, the end of the hollow pipe 206 is fixedly installed with a third pressure sensor 15 for detecting air pressure, the air outlet pipe 17 can abut against the turnover plate 18, and the side of the turnover plate 18 is fixedly connected with a second spring 19 for driving the turnover plate to reset.

[0054] It should be noted that the air outlet amount of the air outlet pipe is less than the air amount supplied by the air pump.

[0055] By adopting the above scheme, the air pump 2034 pumps air into the fixed pipe 2032, after the air enters the fixed pipe 2032, the gas pushes the taper pipe 2031 to move along the fixed pipe 2032, the taper pipe 2031 extrudes the connecting piece 14 in the moving process, so that the connecting piece 14 pushes the sleeve 13 to drive the first pressure sensor 201 to abut against the inner wall of the centrifugal pipe, when the air continues to be pumped, the taper pipe 2031 moves, so that the sensing part of the first pressure sensor 201 pressurizes the inner wall of the centrifugal pipe, the centrifugal pipe is subjected to external force detection, the air pressure in the centrifugal pipe is detected, the centrifugal pipe is subjected to external force detection, and the air pressure in the centrifugal pipe is detected, if the air pressure decreases or remains unchanged, it indicates that the pressure applied by the first pressure sensor 201 at this time can cause the pipe body to be broken or leaked, the external force required for the centrifugal pipe to be broken or leaked can be obtained, so as to give suggestions in the process of transportation and use.

[0056] For example, referring to Figure 3 The clamping piece 7 is fixedly installed on the connecting plate 6, and includes a clamping plate 701 and an elastic piece 702 capable of abutting against the centrifugal tube. The elastic piece 702 is arranged on the side of the clamping plate 701, and the clamping plate 701 is arranged on the connecting plate 6.

[0057] It should be noted that in the embodiment, the elastic piece 702 is arranged as a rubber sheet, and the clamping plate 701 is arranged as a V-shaped plate.

[0058] With the above scheme, when the clamping piece 7 is clamped on the centrifugal tube by the lead screw base 304, the elastic piece 702 is attached to the surface of the centrifugal tube, the elastic piece 702 is deformed, and is wrapped on the wall of the centrifugal tube. When the anti-external force test in the tube is performed, the centrifugal tube can be wrapped and fixed to ensure the stability of the detection process.

[0059] When the second pressure sensor 305 continuously increases the pressure on the centrifugal tube, the elastic piece 702 can increase the contact area with the centrifugal tube as the pressure increases, and cooperate with the clamping plate 701 to increase the fixing effect, which can effectively prevent the centrifugal tube from being twisted when the centrifugal tube is subjected to a large force.

[0060] Specifically, in order to detect the deformation amount of the tube body when the centrifugal tube is subjected to an external force, the machine table 1 is fixedly installed with a bracket 8, the bracket 8 is fixedly installed with a linear guide rail 9, and the sliding part of the linear guide rail 9 is fixedly installed with a laser displacement sensor 10. The linear guide rail 9 is used to drive the laser displacement sensor 10 to move, adjust the position of the laser displacement sensor 10, so as to detect the change of the tube body during the tube wall anti-external force test and the tube wall anti-external force test.

[0061] For example, the connecting piece 11 includes a third spring 12, a sleeve 13, and a connecting piece 14 capable of abutting against the tapered tube 2031. One end of the third spring 12 is fixedly connected with the inner wall of the hollow tube 206, the other end of the third spring 12 is fixedly connected with the connecting piece 14, the sleeve 13 is slidingly inserted into the side wall of the hollow tube 206, the connecting piece 14 is fixedly connected with the sleeve 13, and the first pressure sensor 201 is arranged in the sleeve 13.

[0062] It should be noted that the sleeve 13 and the hollow tube 206 slidingly cooperate with a sealing gasket, which can effectively prevent the hollow tube 206 and the sleeve 13 from being inserted and exhausting air outward during the air tightness test.

[0063] With the above scheme, when the connecting piece 14 is extruded by the taper pipe, the connecting piece 14 pushes the first pressure sensor 201 to move away from the outer wall of the pipe, and the third spring 12 is compressed under force, when the taper pipe 2031 is reset, the third spring 12 pushes the connecting piece 14 to reset, and drives the first pressure sensor 201 to reset, facilitating the use in the next test, and facilitating the operation of the staff.

[0064] Specifically, the mounting plate 205 is provided as a hollow plate, the mounting plate 205 is in communication with the hollow pipe 206, the exhaust pipe of the fixed pipe 2032 penetrates the side of the mounting plate 205, and the exhaust pipe of the fixed pipe 2032 is provided with an exhaust valve, after the detection is completed, the air pump is closed, and the exhaust valve is opened, the first spring 2033 can pull the taper pipe 2031 to reset, and the air in the fixed pipe 2032 is exhausted, the decompression of the connecting piece 14 is released, and the first pressure sensor 201 is reset by the third spring 12.

[0065] To sum up, the beneficial effects of the present application are: when the centrifugal tube is subjected to external force detection, the centrifugal tube sleeve 13 is sleeved on the tube inner detection assembly 2 by the mechanical hand, in the process of sleeving the centrifugal tube, the inner wall of the centrifugal tube is in contact with the transmission rod 501, the end of the transmission rod 501 is lifted, the driving rod 502 is lifted at the riveting point, the other end of the driving rod 502 pushes the movable plate 402, the air bag 204 is extruded, the air bag 204 is deformed and tightly attached to the wall of the centrifugal tube, that is, the fixation of the centrifugal tube is completed, then the electric push rod 202 works, drives the fixed centrifugal tube to move to the tube outer detection assembly 3 area, the motor 302 works, drives the lead screw 303 to rotate, so that the two lead screw seats 304 relatively move along the guide groove 301, the clamping piece 7 clamps the centrifugal tube, the motor 302 continues to work, the lead screw seat 304 drives the second sensor to contact the centrifugal tube, and the pressure is continuously increased, the influence of external extrusion on the centrifugal tube body is simulated, and the external force detection of the outer wall of the centrifugal tube can be carried out;

[0066] The fixed pipe 2032 is supplied with gas by the air pump, and after the gas enters the fixed pipe 2032, the gas pushes the conical pipe 2031 to move along the fixed pipe 2032. The conical pipe 2031 extrudes the connecting piece 14 during the movement, so that the connecting piece 14 pushes the sleeve 13 to drive the first pressure sensor 201 to be attached to the inner wall of the centrifugal pipe. When the gas continues to be supplied, the conical pipe 2031 moves, so that the sensing part of the first pressure sensor 201 pressurizes the inner wall of the centrifugal pipe, and the air inlet pipe of the air outlet pipe pushes the turnover plate to open, so that the conical pipe 2031 is in communication with the air outlet pipe. Air is injected into the centrifugal pipe, and the third pressure sensor 15 detects the air pressure in the centrifugal pipe. While the inner wall of the centrifugal pipe is subjected to external force detection, the air pressure in the centrifugal pipe can be detected. If the air pressure decreases or remains unchanged, it indicates that the centrifugal pipe leaks during the continuous pressurization of the first pressure sensor 201. The data transmitted by the first pressure sensor and the third pressure sensor 15 can be compared to determine the size of the external force required for the pipe body to leak;

[0067] The above structure can detect the external force resistance of the outer wall and the inner wall of the centrifugal pipe, and can detect the external force resistance of the single direction item and the external wall and the inner wall of the centrifugal pipe at the same time. During the detection process, the pipe body air tightness of the centrifugal pipe can be detected, the size of the external force acting on the centrifugal pipe when the pipe wall leaks can be determined, and the detection quality can be effectively improved;

[0068] When the lead screw seat 304 drives the clamping piece 7 to clamp the centrifugal pipe, the elastic piece 702 is attached to the surface of the centrifugal pipe, the elastic piece 702 is deformed, and the centrifugal pipe is clamped and fixed, which ensures the stability of the detection process.

[0069] When the second pressure sensor 305 continuously increases the pressure of the centrifugal pipe, the elastic piece 702 can increase the contact area with the centrifugal pipe along with the increase of the pressure, and cooperate with the clamping plate 701 to increase the fixing effect, so that the twisting of the centrifugal pipe under large stress can be effectively prevented.

[0070] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones. The modifications or replacements do not change the essence of the corresponding technical solutions, and are within the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel centrifuge tube anti-external force detection device of an environmentally friendly material, comprising a machine table, characterized in that: a tube inner detection assembly and a tube outer detection assembly are respectively installed on the machine table; the tube inner detection assembly is used for stress detection of the inner wall of the centrifuge tube; the tube outer detection assembly is used for stress detection of the outer wall of the centrifuge tube; a mechanical hand is fixedly installed on the machine table, and the mechanical hand is used for grabbing the centrifuge tube and placing the centrifuge tube on the tube inner detection assembly; the tube inner detection assembly comprises a first pressure sensor, an electric push rod, a telescopic part, and an air bag capable of fixing the centrifuge tube, a mounting plate is fixedly connected to the telescopic end of the electric push rod, a hollow tube is fixedly connected to the side of the mounting plate away from the electric push rod, a fixing part for fixing the centrifuge tube is arranged on the hollow tube, the air bag is slidably sleeved on the hollow tube, the first pressure sensor is installed in the hollow tube through a connecting part, and the detection head of the first pressure sensor is located outside the hollow tube, the telescopic part is installed in the hollow tube, and the telescopic part can drive the first pressure sensor to move; the telescopic part comprises a taper pipe and a fixed pipe, the taper pipe is slidably installed in the fixed pipe, the fixed pipe is arranged in the hollow tube, a first spring is fixedly connected in the fixed pipe, the other end of the first spring is fixedly connected with the taper pipe, and the end of the fixed pipe away from the taper pipe is communicated with an air pump; a flip plate capable of rotating is arranged on the top of the taper pipe, the side of the hollow tube away from the mounting plate is communicated with an air outlet pipe, a third pressure sensor for detecting air pressure is fixedly installed at the end of the hollow tube, the air outlet pipe can abut against the flip plate, the side of the flip plate is fixedly connected with a second spring for driving the flip plate to reset; the connecting part comprises a third spring, a sleeve, and a connecting piece capable of abutting against the taper pipe, one end of the third spring is fixedly connected with the inner wall of the hollow tube, the other end of the third spring is fixedly connected with the connecting piece, the sleeve is slidably inserted into the side wall of the hollow tube, the connecting piece is fixedly connected with the sleeve, and the first pressure sensor is arranged in the sleeve; the fixing part comprises a fixed plate, a movable plate, and a connecting rod mechanism, the fixed plate is fixedly installed on the hollow tube, the air bag is fixedly installed on the fixed plate, the movable plate is slidably installed on the hollow tube, one side of the movable plate is fixedly connected with the air bag, the connecting rod mechanism is in transmission connection with the movable plate, and the connecting rod mechanism is arranged on the hollow tube; the connecting rod mechanism comprises a transmission rod and a push rod, the transmission rod is hingedly installed on the hollow tube, the transmission rod is movably riveted with the push rod, and one end of the push rod is hingedly connected with the movable plate; the tube outer detection assembly comprises a guide groove and a motor, the motor is fixedly installed on the upper end of the guide groove, a lead screw is rotatably installed in the guide groove, the output end of the motor is in transmission connection with the lead screw, two opposite moving lead screw seats are threadedly installed on the lead screw, and the second pressure sensor is installed on the lead screw seats through a connecting plate. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The novel environmental protection material centrifugal tube anti-external force detection device according to claim 1, characterized in that: ​ 3. The novel environmental protection material centrifugal tube anti-external force detection device according to claim 1, characterized in that: The transmission rod can abut against the inner wall of the hollow tube.

4. The novel environmental protection material centrifugal tube anti-external force detection device according to claim 2, characterized in that: The connecting plate is fixedly provided with a clamping piece, the clamping piece comprises a clamping plate and an elastic piece, the elastic piece can abut against the centrifugal tube, the elastic piece is arranged on the side of the clamping plate, and the clamping plate is arranged on the connecting plate.

5. The novel environmental protection material centrifugal tube anti-external force detection device according to claim 1, characterized in that: The machine is fixedly provided with a support, the support is fixedly provided with a linear guide rail, and a laser displacement sensor is fixedly arranged on the sliding part of the linear guide rail.

6. The novel environmental protection material centrifugal tube anti-external force detection device according to claim 1, characterized in that: The mounting plate is a hollow plate, the mounting plate is communicated with the hollow tube, the exhaust pipe of the fixed tube penetrates the side of the mounting plate, and the exhaust pipe of the fixed tube is provided with an exhaust valve.

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