Test tube clamp for liquid nitrogen tank
By designing a test tube clip for liquid nitrogen tanks including a fixing rod, a mounting frame and an anti-slip grip, automatic length adjustment is achieved using a displacement rod and a limiting mechanism, and stable clamping and convenient removal of the test tubes through a clamping mechanism and a rubber pad, the problem of difficulty in removing test tubes and different specifications in the prior art is solved, and the applicability and practicality of the device are improved.
Patent Information
- Application Number
- CN202420738058.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The existing liquid nitrogen tank test tube clip design makes it difficult to remove the test tubes, and different specifications of liquid nitrogen tanks require different lengths of test tube clips, which increases the cost and management complexity of the laboratory.
A test tube clip for liquid nitrogen tank including a fixing rod, a mounting frame and an anti-slip grip is designed. The automatic adjustment of the device length is achieved through the displacement rod and the limiting mechanism, and the stable clamping and convenient removal of the test tube is achieved through the clamping mechanism and the rubber pad.
It realizes the convenient removal of the test tube in the liquid nitrogen tank, avoids the damage of the test tube by the clamping plate, and is suitable for liquid nitrogen tanks of different specifications through the design of automatic adjustment of the length, reducing the cost and management complexity of the laboratory.
Smart Images
Figure CN222984415U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid nitrogen tanks, in particular to a test tube clamp for a liquid nitrogen tank. Background Technique
[0002] Liquid nitrogen tanks can generally be divided into two types: liquid nitrogen storage tanks and liquid nitrogen transport tanks. The storage tank is mainly used for static storage of liquid nitrogen indoors and is not suitable for long-distance transportation in the working state; the liquid nitrogen transport tank has a special shock-proof design to meet the transportation conditions. In addition to static storage, it can also be used for transportation when filled with liquid nitrogen, but violent collisions and vibrations should also be avoided.
[0003] Existing liquid nitrogen storage tanks are generally relatively large, and it is very difficult to take out the test tubes after they are placed. Tools are needed for assistance, and the specifications of liquid nitrogen tanks are often different, requiring test tube clamps of different lengths, which means that multiple specifications of test tube clamps need to be prepared, increasing the cost of the laboratory and the complexity of management. Content of the Utility Model
[0004] The purpose of the utility model is to provide a test tube clamp for a liquid nitrogen tank to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: It includes a fixed rod, a mounting frame and an anti-slip grip. A displacement rod is slidably connected inside the fixed rod. One end of the displacement rod is fixedly connected to a fixed plate. A displacement groove is opened inside the fixed plate. The mounting frame is slidably connected inside the displacement groove. A clamping plate is fixedly connected to one side of the mounting frame. A clamping mechanism is arranged at the bottom of the fixed plate. A fixed frame is fixedly connected to the top of the fixed rod. A limiting mechanism is arranged inside the fixed frame. An anti-slip grip is fixedly connected to one end of the fixed rod. A rubber pad is arranged on one side of the clamping plate.
[0006] As a further preferred of this technical solution, the clamping mechanism includes two first vertical plates. The two first vertical plates are fixedly connected to the bottom of the fixed plate. A bidirectional lead screw is rotatably connected between the two first vertical plates. A motor is fixedly installed on one side of one of the first vertical plates. One end of the output shaft of the motor is fixedly connected to one end of the bidirectional lead screw.
[0007] As a further preferred of this technical solution, the clamping mechanism further includes a displacement block. The displacement block is threadedly connected to the outside of the bidirectional lead screw. The top of the displacement block is fixedly connected to the bottom of the mounting frame.
[0008] As a further preferred of this technical solution, two second vertical plates are fixedly connected to the bottom of the fixed plate. A sliding rod is fixedly connected between the two second vertical plates. The inside of the displacement block is slidably connected to the outside of the sliding rod.
[0009] As a further preference of the present technical solution, the limiting mechanism includes a slider, the slider is slidably connected inside the fixed frame, a clamping block is slidably connected inside the fixed rod, one end of the clamping block is fixedly connected to one side of the slider, a spring is fixedly connected between the top of the slider and the inside of the fixed frame, clamping grooves are equidistantly formed at the top of the displacement rod, and one end of the clamping block extends into the clamping grooves.
[0010] As a further preference of the present technical solution, the limiting mechanism further includes a limiting groove, the limiting groove is formed on the outer side of the fixed frame, a limiting rod is slidably connected inside the limiting groove, and one end of the limiting rod is fixedly connected to one side of the slider.
[0011] As a further preference of the present technical solution, one end of the clamping block is provided with an inclined surface.
[0012] The utility model provides a test tube clamp for a liquid nitrogen tank, which has the following beneficial effects:
[0013] (1) By pulling the displacement rod, the length of the device is extended. After the displacement rod moves to an appropriate length, the displacement rod can be automatically fixed and limited by the limiting mechanism, avoiding the problem of detachment during use, thereby increasing the applicability of the device and further increasing the practicality of the device.
[0014] (2) By starting the clamping mechanism to operate, the mounting frame is driven to slide inside the displacement groove while driving the two clamping plates to clamp the outside of the test tube. Then, the friction between the clamping plate and the test tube can be increased through the rubber pad, and the problem of damage to the outside of the test tube caused by the clamping plate can also be avoided. In this way, the test tube can be conveniently taken out from the liquid nitrogen tank, and further increases the practicality of the device. Description of the Drawings
[0015] Figure 1 is a three-dimensional structural diagram of the utility model;
[0016] Figure 2 is a side three-dimensional structural diagram of the utility model;
[0017] Figure 3 is a structural diagram of the clamping mechanism of the utility model;
[0018] Figure 4 is a structural diagram of the limiting mechanism of the utility model;
[0019] In the figure: 1, fixed rod; 2, displacement rod; 3, fixed plate; 4, clamping plate; 5, rubber pad; 6, mounting bracket; 7, card slot; 8, fixing bracket; 9, anti-slip grip; 10, displacement groove; 11, first vertical plate; 12, bidirectional lead screw; 13, displacement block; 14, slide bar; 15, motor; 16, second vertical plate; 17, spring; 18, limit groove; 19, slider; 20, clamping block; 21, limit rod. Detailed implementation mode
[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.
[0021] The present invention provides a technical solution: As Figures 1-4 shown, in this embodiment, a test tube clamp for a liquid nitrogen tank includes a fixed rod 1, a mounting bracket 6 and an anti-slip grip 9. A displacement rod 2 is slidably connected inside the fixed rod 1. One end of the displacement rod 2 is fixedly connected to a fixed plate 3. A displacement groove 10 is opened inside the fixed plate 3. The mounting bracket 6 is slidably connected inside the displacement groove 10. A clamping plate 4 is fixedly connected to one side of the mounting bracket 6. A clamping mechanism is arranged at the bottom of the fixed plate 3. A fixing bracket 8 is fixedly connected to the top of the fixed rod 1. A limiting mechanism is arranged inside the fixing bracket 8. An anti-slip grip 9 is fixedly connected to one end of the fixed rod 1. A rubber pad 5 is arranged on one side of the clamping plate 4.
[0022] First, pull the displacement rod 2 according to the depth of different liquid nitrogen tanks to extend the length of the device. After the displacement rod 2 moves to an appropriate length, the displacement rod 2 can be automatically fixed and limited through the limiting mechanism, avoiding the problem of detachment during use, thereby increasing the applicability of the device and further increasing the practicality of the device. Then, hold the anti-slip grip 9 and insert one end of the clamping plate 4 into the liquid nitrogen tank. Then, start the clamping mechanism to operate, so as to drive the mounting bracket 6 to slide inside the displacement groove 10 and drive the two clamping plates 4 to clamp the outside of the test tube at the same time. Then, the rubber pad 5 can increase the friction between the clamping plate 4 and the test tube, and also avoid the problem of the clamping plate 4 damaging the outside of the test tube. In this way, the test tube can be conveniently taken out from the liquid nitrogen tank, thereby further increasing the practicality of the device.
[0023] As Figures 1-4As shown, the clamping mechanism includes two first vertical plates 11, and the two first vertical plates 11 are fixedly connected to the bottom of the fixed plate 3. A bidirectional lead screw 12 is rotatably connected between the two first vertical plates 11. One side of one of the first vertical plates 11 is fixedly installed with a motor 15, and one end of the output shaft of the motor 15 is fixedly connected to one end of the bidirectional lead screw 12. The clamping mechanism further includes a displacement block 13, and the displacement block 13 is threadedly connected to the outside of the bidirectional lead screw 12. The top of the displacement block 13 is fixedly connected to the bottom of the mounting bracket 6. Two second vertical plates 16 are fixedly connected to the bottom of the fixed plate 3, and a slide bar 14 is fixedly connected between the two second vertical plates 16. The inside of the displacement block 13 is slidably connected to the outside of the slide bar 14.
[0024] When clamping the test tube, by starting the rotation of the output shaft of the motor 15 to drive the rotation of the bidirectional lead screw 12 and at the same time drive the displacement block 13 to slide on the outside of the slide bar 14. The slide bar 14 can guide the movement of the displacement block 13. Then the displacement block 13 moves to drive the mounting bracket 6 to slide inside the displacement groove 10 and at the same time drive the clamping plate 4 to approach the outside of the test tube, so as to clamp and fix the outside of the test tube, thereby increasing the practicability of the device.
[0025] As Figures 1-4 shown, the limiting mechanism includes a slider 19. The slider 19 is slidably connected inside the fixed bracket 8. A clamping block 20 is slidably connected inside the fixed rod 1. One end of the clamping block 20 is fixedly connected to one side of the slider 19. A spring 17 is fixedly connected between the top of the slider 19 and the inside of the fixed bracket 8. The top of the displacement rod 2 is equidistantly provided with clamping grooves 7. One end of the clamping block 20 extends into the inside of the clamping grooves 7. The limiting mechanism further includes a limiting groove 18. The limiting groove 18 is opened on the outside of the fixed bracket 8. A limiting rod 21 is slidably connected inside the limiting groove 18. One end of the limiting rod 21 is fixedly connected to one side of the slider 19. One end of the clamping block 20 is provided with an inclined surface.
[0026] When extending the length of the displacement rod 2, by pulling the displacement rod 2 to drive the inner wall of the clamping groove 7 to abut against the inclined surface of the clamping block 20. Thus, the clamping block 20 moves to drive the slider 19 to move and at the same time compress the spring 17. Then when the displacement rod 2 moves to an appropriate length, by the reaction force of the spring 17 to drive the slider 19 to move and at the same time drive the clamping block 20 to enter the inside of the clamping groove 7 to complete automatic fixation. Then when shortening the length of the displacement rod 2, by moving the limiting rod 21 to drive the slider 19 to move and at the same time drive the clamping block 20 to disengage from the inside of the clamping groove 7. At this time, the displacement rod 2 can be retracted into the inside of the fixed rod 1, thereby increasing the convenience of the device.
[0027] The utility model provides a test tube clamp for a liquid nitrogen tank, and the specific working principle is as follows: first, according to the depth of different liquid nitrogen tanks, the displacement rod 2 is pulled to drive the inner wall of the card slot 7 to contact the inclined surface of the card block 20, so that the card block 20 moves and drives the slider 19 to move and compress the spring 17 at the same time, and then when the displacement rod 2 moves to a suitable length, the reaction force of the spring 17 drives the slider 19 to move and drives the card block 20 to enter the interior of the card slot 7 to complete automatic fixation, and then when the length of the displacement rod 2 is shortened, the fluctuation limit rod 21 drives the slider 19 to move and drives the card block 20 at the same time After disengaging from the interior of the card slot 7, the displacement rod 2 can be retracted into the interior of the fixed rod 1, thereby increasing the convenience of the device. Next, when clamping the test tube, the output shaft of the starting motor 15 drives the bidirectional screw rod 12 to rotate and drives the displacement block 13 to slide on the outside of the slide rod 14. The slide rod 14 can guide the movement of the displacement block 13, and then the movement of the displacement block 13 drives the mounting frame 6 to slide inside the displacement slot 10 and drives the clamping plate 4 to approach the outside of the test tube, thereby clamping and fixing the outside of the test tube, thereby increasing the practicality of the device.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A test tube clamp for a liquid nitrogen tank, comprising a fixing rod (1), a mounting frame (6) and a non-slip grip (9), characterized in that: The interior of the fixed rod (1) is slidably connected to a displacement rod (2), one end of the displacement rod (2) is fixedly connected to a fixed plate (3), a displacement groove (10) is provided inside the fixed plate (3), the mounting frame (6) is slidably connected inside the displacement groove (10), one side of the mounting frame (6) is fixedly connected to a clamping plate (4), a clamping mechanism is provided at the bottom of the fixed plate (3), the top of the fixed rod (1) is fixedly connected to a fixed frame (8), a limiting mechanism is provided inside the fixed frame (8), one end of the fixed rod (1) is fixedly connected to an anti-slip handle (9), and one side of the clamping plate (4) is provided with a rubber pad (5).
2. A test tube clamp for a liquid nitrogen tank according to claim 1, characterized in that: The clamping mechanism comprises two first vertical plates (11), the two first vertical plates (11) are fixedly connected to the bottom of the fixed plate (3), a bidirectional screw rod (12) is rotatably connected between the two first vertical plates (11), a motor (15) is fixedly mounted on one side of one of the first vertical plates (11), and one end of the output shaft of the motor (15) is fixedly connected to one end of the bidirectional screw rod (12).
3. A test tube clamp for a liquid nitrogen tank according to claim 2, characterized in that: The clamping mechanism also includes a displacement block (13), the displacement block (13) is threadedly connected to the outside of the bidirectional screw rod (12), and the top of the displacement block (13) is fixedly connected to the bottom of the mounting frame (6).
4. A test tube clamp for a liquid nitrogen tank according to claim 3, characterized in that: Two second vertical plates (16) are fixedly connected to the bottom of the fixed plate (3), a sliding rod (14) is fixedly connected between the two second vertical plates (16), and the inside of the displacement block (13) is slidably connected to the outside of the sliding rod (14).
5. The test tube clamp for a liquid nitrogen tank according to claim 1, characterized in that: The limiting mechanism comprises a slider (19), the slider (19) is slidably connected to the inside of the fixing frame (8), a clamping block (20) is slidably connected to the inside of the fixing rod (1), one end of the clamping block (20) is fixedly connected to one side of the slider (19), a spring (17) is fixedly connected between the top of the slider (19) and the inside of the fixing frame (8), and a clamping groove (7) is equidistantly provided on the top of the displacement rod (2), and one end of the clamping block (20) extends to the inside of the clamping groove (7).
6. A test tube clamp for a liquid nitrogen tank according to claim 5, characterized in that: The limiting mechanism further comprises a limiting groove (18), wherein the limiting groove (18) is arranged on the outside of the fixing frame (8), the inside of the limiting groove (18) is slidably connected to a limiting rod (21), and one end of the limiting rod (21) is fixedly connected to one side of the sliding block (19).
7. A test tube clamp for a liquid nitrogen tank according to claim 5, characterized in that: One end of the clamping block (20) is provided with an inclined surface.