Simple fixing device for base of measuring cylinder in laboratory

Abstract

The utility model discloses a laboratory measuring cylinder base simple fixing device which comprises a bearing frame, the top of the bearing frame is fixedly connected with a bearing support, two guide rods are fixedly connected between the two sides of the inner wall of the bearing frame, and two assembling sleeve plates are movably connected between the two guide rods in a sleeved mode. The top of the assembling matching plate is rotationally connected with an assembling supporting plate through an assembling rotating shaft. According to the utility model, the adjusting rotating block is rotated and the adjusting cam is driven to rotate, so that the adjusting cam gives a pushing force to the corresponding adjusting push plate, the adjusting push plate drives the adjusting insertion strip and the adjusting spring to move along the direction of the adjusting sliding block, and then the adjusting insertion strip is movably inserted into one of the fixed insertion openings for limiting; and then a fixed abutting arc plate of the fixed L-shaped plate makes contact with and abuts against a base of the measuring cylinder, so that the situation that the measuring cylinder topples over is reduced, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory graduated cylinder technology, and in particular to a simple fixing device for a laboratory graduated cylinder base. Background Technology

[0002] A laboratory is a place for conducting experiments. It is the cradle of science, the base of scientific research, and the source of technological development, playing a very important role in technological advancement. A laboratory graduated cylinder is a glass instrument used in laboratories to roughly measure the volume of liquids. A few large graduated cylinders are made of transparent plastic, and their accuracy is lower than that of precision measuring instruments such as pipettes and burettes. They are suitable for experimental scenarios where high volume accuracy is not required. Most laboratory graduated cylinders on the market are made of glass. In daily experiments, they are often easily tipped over due to unstable placement or accidental contact during experiments. At the same time, the liquid inside the graduated cylinder is prone to direct leakage or the graduated cylinder may break. If the liquid is corrosive, there is a greater safety hazard, thereby reducing the effectiveness of use. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a simple fixing device for a laboratory graduated cylinder base.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a simple fixing device for a laboratory graduated cylinder base, comprising a receiving frame, a receiving bracket fixedly connected to the top of the receiving frame, two guide rods fixedly connected between the two sides of the inner wall of the receiving frame, two mounting plates movably sleeved between the two guide rods, an mounting support plate rotatably connected to the top of the mounting plate via an mounting shaft, connecting horizontal plates provided on both the left and right sides of the receiving frame, two connecting shafts fixedly connected to the bottom of the connecting horizontal plates, the connecting shafts rotatably connected to their corresponding mounting support plates, and a driving component connected to the surface of the receiving frame;

[0005] A fixed sleeve plate is fixedly connected to the top of the connecting cross plate. A fixed extension plate is slidably connected inside the fixed sleeve plate. One end of the fixed extension plate is connected to a fixed abutting arc plate via a fixed L-shaped plate. A fixed groove is provided on the side wall of the fixed sleeve plate. An adjusting slider is slidably connected inside the fixed groove. One end of the adjusting slider is fixedly connected to the fixed extension plate. Fixed sponges are fixedly connected to the symmetrical sides of the two fixed abutting arc plates. Two fixed support bars are fixedly connected to the side wall of the fixed sleeve plate. Fixed insertion ports are provided on the symmetrical sides of the two fixed support bars. An adjusting component is connected to the side wall of the adjusting slider.

[0006] As a further description of the above technical solution:

[0007] The drive assembly includes a bidirectional drive screw that runs through the surface of the receiving frame. One end of the bidirectional drive screw is fixedly connected to a drive rotating block, and the other end of the bidirectional drive screw is rotatably connected to the inner wall of the receiving frame. Both of the assembly plates are threaded to the outer wall of the bidirectional drive screw. The surface of the receiving frame has multiple drive insertion holes.

[0008] As a further description of the above technical solution:

[0009] A drive insert is provided through the surface of the drive block. One end of the drive insert is fixedly connected to a drive pull block, and the other end of the drive insert is movably inserted into one of the drive holes. A drive spring is movably sleeved on the outer wall of the drive insert, and the two ends of the drive spring are fixedly connected to the side wall of the drive block and the side wall of the supporting frame, respectively.

[0010] As a further description of the above technical solution:

[0011] The adjustment assembly includes an adjustment shaft that passes through and is rotatably connected to the side wall of the adjustment slider. An adjustment cam and an adjustment block are fixedly connected to both ends of the adjustment shaft, respectively. The side wall of the adjustment block is provided with multiple adjustment holes, and the side wall of the adjustment slider is provided with two symmetrical moving slots.

[0012] As a further description of the above technical solution:

[0013] A movable slider is slidably connected inside the movable groove, and a movable spring is fixedly connected to the inner wall of the movable groove. One end of the movable spring is fixedly connected to the movable slider corresponding to it, and a movable pull plate is fixedly connected to the side wall of the movable slider.

[0014] As a further description of the above technical solution:

[0015] A movable insert is fixedly connected to the side of the movable pull plate near the adjusting block. The end of the movable insert is movably inserted into one of the adjusting holes. Adjusting inserts are provided through both the front and rear sides of the adjusting slider. An adjusting push plate is fixedly connected to one end of the adjusting insert.

[0016] As a further description of the above technical solution:

[0017] The other end of the adjusting strip is movably inserted into one of the fixed sockets, and an adjusting spring is movably sleeved on the outer wall of the adjusting strip. The two ends of the adjusting spring are respectively fixedly connected to the side wall of the adjusting push plate and the inner wall of the adjusting slider.

[0018] This utility model has the following beneficial effects:

[0019] The drive assembly allows the drive bidirectional screw, drive rotating block, drive insert, drive pull block, and drive spring to work together. The drive rotating block drives the drive bidirectional screw to rotate, causing the two assembly plates to move closer together along the direction of the drive bidirectional screw. Simultaneously, the assembly plates are movably sleeved and guided by the guide rod, causing the assembly plates to move the assembly support plate on the assembly shaft. Then, the assembly support plate moves the connecting cross plate on the connecting shaft. Following this, the connecting cross plate moves the fixed sleeve plate and the fixed L-shaped plate and fixed clamping arc plate on the fixed extension plate, causing the fixed sponge on the fixed clamping arc plate to contact and press against both sides of the measuring cup. At the same time, the drive pull block is released or loosened, allowing... The drive insert is either inserted into or limited by one of the drive sockets. The adjustment assembly allows the adjustment insert, adjustment spring, adjustment push plate, adjustment shaft, adjustment cam, adjustment block, sliding block, sliding spring, sliding pull plate, and moving insert to work together. By rotating the adjustment block, the adjustment cam is rotated, which in turn provides a pushing force to the corresponding adjustment push plate. This causes the adjustment push plate to move the adjustment insert and adjustment spring along the direction of the adjustment slider. Then, the adjustment insert is movably inserted into and limited by one of the fixed sockets. Next, the fixing and clamping arc plate of the fixed L-shaped plate contacts and clamps the base of the measuring cup, reducing the possibility of the measuring cup tipping over and thus improving the performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a simple fixing device for a laboratory graduated cylinder base proposed in this utility model;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0023] Figure 4 This is a schematic diagram of the internal structure of the adjusting slider of a simple fixing device for a laboratory graduated cylinder base proposed in this utility model.

[0024] Legend:

[0025] 1. Support frame; 2. Support bracket; 3. Guide rod; 4. Assemble matching plate; 5. Assemble rotating shaft; 6. Assemble support plate; 7. Connecting horizontal plate; 8. Connecting rotating shaft; 9. Drive bidirectional screw; 10. Drive rotating block; 11. Drive insert; 12. Drive pull block; 13. Drive spring; 14. Fixing sleeve plate; 15. Fixing extension plate; 16. Fixing L-shaped plate; 17. Fixing clamping arc plate; 18. Fixing support bar; 19. Adjusting slider; 20. Adjusting insert; 21. Adjusting spring; 22. Adjusting push plate; 23. Adjusting rotating shaft; 24. Adjusting cam; 25. Adjusting rotating block; 26. Moving slider; 27. Moving spring; 28. Moving pull plate; 29. ​​Moving insert. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1-4 This utility model provides a simple fixing device for a laboratory graduated cylinder base, including a supporting frame 1. A supporting bracket 2 is fixedly connected to the top of the supporting frame 1. Two guide rods 3 are fixedly connected between the two sides of the inner wall of the supporting frame 1. Two mounting plates 4 are movably sleeved between the two guide rods 3. The top of the mounting plates 4 is rotatably connected to the mounting support plate 6 via the mounting shaft 5. Connecting horizontal plates 7 are provided on both sides of the supporting frame 1. Two connecting shafts 8 are fixedly connected to the bottom of the connecting horizontal plates 7. The connecting shafts 8 are rotatably connected to their corresponding mounting support plates 6. A driving assembly is connected to the surface of the supporting frame 1. The driving assembly is used to adjust the movement of the mounting plates 4. The driving assembly includes a bidirectional driving screw 9 that passes through the surface of the supporting frame 1. A driving block is fixedly connected to one end of the bidirectional driving screw 9. 10. The other end of the drive bidirectional screw 9 is rotatably connected to the inner wall of the receiving frame 1. Both mounting plates 4 are threadedly connected to the outer wall of the drive bidirectional screw 9. The surface of the receiving frame 1 has multiple drive insertion holes. The surface of the drive rotating block 10 is provided with a drive insert 11. One end of the drive insert 11 is fixedly connected to a drive pull block 12. The other end of the drive insert 11 is movably inserted into one of the drive insertion holes. The outer wall of the drive insert 11 is movably sleeved with a drive spring 13. Both ends of the drive spring 13 are fixedly connected to the side wall of the drive rotating block 10 and the side wall of the receiving frame 1, respectively. By rotating the drive pull block 12, the drive bidirectional screw 9 is driven to rotate. Then, the two mounting plates 4 move closer and further away from each other along the direction of the drive bidirectional screw 9. At the same time, the mounting plates 4 are movably sleeved with the guide rod 3 for guidance.

[0028] A fixed sleeve plate 14 is fixedly connected to the top of the connecting horizontal plate 7. A fixed extension plate 15 is slidably connected inside the fixed sleeve plate 14. One end of the fixed extension plate 15 is connected to a fixed clamping arc plate 17 via a fixed L-shaped plate 16. A fixed groove is provided on the side wall of the fixed sleeve plate 14. An adjusting slider 19 is slidably connected inside the fixed groove. One end of the adjusting slider 19 is fixedly connected to the fixed extension plate 15. Fixed sponges are fixedly connected to the symmetrical sides of the two fixed clamping arc plates 17. Two fixed support bars 18 are fixedly connected to the side wall of the fixed sleeve plate 14. Fixed insertion ports are provided on the symmetrical sides of the two fixed support bars 18. An adjusting assembly is connected to the side wall of the adjusting slider 19. The adjusting assembly includes an adjusting shaft 23 that passes through and is rotatably connected to the side wall of the adjusting slider 19. An adjusting cam 24 and an adjusting block 25 are fixedly connected to both ends of the adjusting shaft 23, respectively. Multiple adjusting insertion holes are provided on the side wall of the adjusting block 25. Two symmetrical moving grooves are provided on the side wall. A moving slider 26 is slidably connected inside the moving groove. A moving spring 27 is fixedly connected to the inner wall of the moving groove. One end of the moving spring 27 is fixedly connected to the corresponding moving slider 26. A moving pull plate 28 is fixedly connected to the side wall of the moving slider 26. A moving insert 29 is fixedly connected to the side of the moving pull plate 28 near the adjusting block 25. The end of the moving insert 29 is movably inserted into one of the adjusting holes. Adjusting inserts 20 are provided through the front and rear sides of the adjusting slider 19. An adjusting push plate 22 is fixedly connected to one end of the adjusting insert 20. The other end of the adjusting insert 20 is movably inserted into one of the fixed holes. An adjusting spring 21 is movably sleeved on the outer wall of the adjusting insert 20. The two ends of the adjusting spring 21 are fixedly connected to the side wall of the adjusting push plate 22 and the inner wall of the adjusting slider 19, respectively. The purpose of movably inserting and limiting the movement with one of the adjusting holes is achieved by the moving insert 29.

[0029] Working principle: In use, first place the measuring cup to be stabilized above the receiving bracket 2, then pull the drive block 12, so that the drive block 12 drives the drive insert 11 and the drive spring 13 to move along the direction on the drive rotating block 10. Then the drive insert 11 separates from one of the drive holes. Then rotate the drive rotating block 10, which drives the drive double screw 9 to rotate, so that the two mounting plates 4 move closer to each other along the direction on the drive double screw 9. At the same time, the mounting plates 4 are movably sleeved with the guide rod 3 and guided, so that the mounting plates 4 also drive the mounting support plate 6 on the mounting shaft 5 to move. Then the mounting support plate 6 also drives the connecting horizontal plate 7 on the connecting shaft 8 to move. Then the connecting horizontal plate 7 also drives the fixed L-shaped plate 16 on the fixed sleeve plate 14 and the fixed extension plate 15 to move. Then the fixed L-shaped plate 16 also drives the fixed pressing arc plate 17 to move, so that the fixed sponge on the fixed pressing arc plate 17 contacts and presses against both sides of the measuring cup.

[0030] Then release the drive pull block 12, so that the drive spring 13 gives the drive insert 11 a restoring force, so that the drive insert 11 is inserted into one of the drive sockets and limited, thereby adjusting the limit of the drive rotating block 10.

[0031] Simultaneously, the movable pull plate 28 is pulled, and then the movable slider 26 and movable spring 27 on the movable pull plate 28 slide inside the movable groove, causing the movable pull plate 28 to drive the movable insert 29 to separate from one of the adjustment holes. Then, the fixed L-shaped plate 16 is pulled, causing the fixed L-shaped plate 16 to drive the fixed extension plate 15 to retract inside the fixed sleeve plate 14. Then, the fixed abutting arc plate 17 on the fixed L-shaped plate 16 contacts and abuts against the base of the measuring cup. Then, the adjusting block 25 is rotated, causing the adjusting block 25 to drive the adjusting shaft 23 and adjusting cam 24 to rotate, causing the adjusting cam 24 to give its corresponding adjusting push plate 22 a pushing force, causing the adjusting push plate 22 to drive the adjusting insert 20 and adjusting spring 21 to move along the direction on the adjusting slider 19. Then, the adjusting insert 20 is movably inserted into one of the fixed holes and limited, thereby pressing and limiting the base of the measuring cup.

[0032] Finally, release the movable pull plate 28, so that the movable spring 27 gives the movable slider 26 a restoring force, so that the movable slider 26 drives the movable insert 29 on the movable pull plate 28 to reset and insert into one of the adjustment holes for a limit position, thereby pressing the measuring cup base tightly to prevent it from falling off.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simple fixing device for a laboratory graduated cylinder base, comprising a supporting frame (1), characterized in that: The top of the receiving frame (1) is fixedly connected to a receiving bracket (2), and two guide rods (3) are fixedly connected between the two sides of the inner wall of the receiving frame (1). Two mounting plates (4) are movably sleeved between the two guide rods (3). The top of the mounting plate (4) is rotatably connected to a mounting support plate (6) through a mounting pivot (5). The receiving frame (1) is provided with connecting horizontal plates (7) on both the left and right sides. The bottom of the connecting horizontal plates (7) is fixedly connected to two connecting pivots (8). The connecting pivots (8) are rotatably connected to their corresponding mounting support plates (6). The surface of the receiving frame (1) is connected to a driving component. A fixed sleeve plate (14) is fixedly connected to the top of the connecting horizontal plate (7). A fixed extension plate (15) is slidably connected inside the fixed sleeve plate (14). One end of the fixed extension plate (15) is connected to a fixed pressing arc plate (17) via a fixed L-shaped plate (16). A fixed groove is provided on the side wall of the fixed sleeve plate (14). An adjusting slider (19) is slidably connected inside the fixed groove. One end of the adjusting slider (19) is fixedly connected to the fixed extension plate (15). Fixed sponges are fixedly connected to the symmetrical sides of the two fixed pressing arc plates (17). Two fixed support bars (18) are fixedly connected to the side wall of the fixed sleeve plate (14). Fixed insertion ports are provided on the symmetrical sides of the two fixed support bars (18). An adjusting component is connected to the side wall of the adjusting slider (19).

2. The simple fixing device for a laboratory graduated cylinder base according to claim 1, characterized in that: The drive assembly includes a bidirectional drive screw (9) that runs through the surface of the receiving frame (1). One end of the bidirectional drive screw (9) is fixedly connected to a drive rotating block (10), and the other end of the bidirectional drive screw (9) is rotatably connected to the inner wall of the receiving frame (1). Both of the assembly plates (4) are threaded to the outer wall of the bidirectional drive screw (9). The surface of the receiving frame (1) is provided with multiple drive insertion holes.

3. A simple fixing device for a laboratory graduated cylinder base according to claim 2, characterized in that: A drive insert (11) is provided through the surface of the drive block (10). One end of the drive insert (11) is fixedly connected to a drive pull block (12). The other end of the drive insert (11) is movably inserted into one of the drive holes. A drive spring (13) is movably sleeved on the outer wall of the drive insert (11). The two ends of the drive spring (13) are fixedly connected to the side wall of the drive block (10) and the side wall of the supporting frame (1), respectively.

4. A simple fixing device for a laboratory graduated cylinder base according to claim 1, characterized in that: The adjustment assembly includes an adjustment shaft (23) that passes through and is rotatably connected to the side wall of the adjustment slider (19). An adjustment cam (24) and an adjustment block (25) are fixedly connected to both ends of the adjustment shaft (23). The side wall of the adjustment block (25) is provided with multiple adjustment holes, and the side wall of the adjustment slider (19) is provided with two symmetrical moving slots.

5. A simple fixing device for a laboratory graduated cylinder base according to claim 4, characterized in that: A sliding block (26) is slidably connected inside the moving groove, and a moving spring (27) is fixedly connected to the inner wall of the moving groove. One end of the moving spring (27) is fixedly connected to the corresponding moving block (26), and a moving pull plate (28) is fixedly connected to the side wall of the moving block (26).

6. A simple fixing device for a laboratory graduated cylinder base according to claim 5, characterized in that: The movable pull plate (28) is fixedly connected to a movable insert (29) on the side near the adjusting block (25). The end of the movable insert (29) is movably inserted into one of the adjusting holes. The adjusting slider (19) has adjusting inserts (20) through it on both the front and rear sides. One end of the adjusting insert (20) is fixedly connected to an adjusting push plate (22).

7. A simple fixing device for a laboratory graduated cylinder base according to claim 6, characterized in that: The other end of the adjusting insert (20) is movably inserted into one of the fixed inserts. An adjusting spring (21) is movably sleeved on the outer wall of the adjusting insert (20). The two ends of the adjusting spring (21) are fixedly connected to the side wall of the adjusting push plate (22) and the inner wall of the adjusting slider (19), respectively.

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