Safe clamping device for chemical raw materials

Abstract

The utility model relates to the technical field of chemical raw material clamping, in particular to a safe chemical raw material clamping device which comprises a sleeve, fixing lugs are fixedly connected to the two sides of one end of the sleeve, and clamping pincers are jointly and rotationally connected to the two sides of the inner walls of the two fixing lugs. When an object is clamped, the guide rod can push the guide rod and the connecting hinge, so that the two connecting rods push away the two clamping pincers, then the two clamping pincers are moved to the two sides of the clamped object, the pressing plate is pushed through the thrust spring, the guide rod pushes the guide rod to pull the connecting hinge, and the two connecting rods pull the two clamping pincers to clamp the object mutually. Due to the fact that the clamping force is provided through the thrust of the thrust spring, clamping of an object is stable, meanwhile, by rotating the spring supporting assembly, the distance between the spring supporting assembly and the pressing plate is adjusted, the thrust spring can be compressed, the thrust can be adjusted, and the clamping force can be adjusted according to the hardness of chemical raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical raw material clamping, in particular to a chemical raw material safety clamping device. Background Art

[0002] Chemical raw materials are raw materials produced by chemical methods. It includes inorganic chemical products other than chemical fertilizers, inorganic pesticides, inorganic pigments, etc., and various products mainly made of polymer materials in the organic synthesis industry. When conducting chemical experiments, it is necessary to sample chemical raw materials, and traditional chemical raw materials are clamped by tweezers or clamping structures.

[0003] Currently, the clamping devices of the tweezer type need to be held and squeezed for clamping. The clamping force depends entirely on the hand strength to control. The clamping force is unstable, easy to loosen and fall off, and the clamping force cannot be adjusted according to the hardness of the chemical raw materials, resulting in inconvenience in use. Summary of the Utility Model

[0004] The purpose of the utility model aims to solve at least one of the technical defects.

[0005] For this reason, an object of the utility model is to provide a chemical raw material safety clamping device to solve the problems mentioned in the background art and overcome the deficiencies existing in the prior art.

[0006] To achieve the above object, an embodiment of one aspect of the utility model provides a chemical raw material safety clamping device, including a sleeve. On both sides of one end of the sleeve, fixed ears are fixedly connected. On both sides of the inner walls of the two fixed ears, clamping pliers are rotatably connected together. At one end of the corresponding sides of the two clamping pliers, connecting ears are fixedly connected. At the center of the end of the sleeve far from the clamping pliers, a guiding sleeve is fixedly connected. A guiding rod is slidably connected to the inner wall of the guiding sleeve. One end of the guiding rod is fixedly connected to a guiding rod, and the end of the guiding rod far from the guiding rod is fixedly connected to a connecting page. On both sides of the connecting page, connecting rods are rotatably connected. The ends of the two connecting rods far from the connecting page are respectively rotatably connected to the connecting ears at one end of the two clamping pliers. The end of the guiding rod far from the connecting page is fixedly connected to a pressing plate. A spring support assembly is threadedly connected to the outer wall of the guiding sleeve. A thrust spring is sleeved on one side of the outer wall of the guiding rod. The thrust spring is located between the spring support assembly and the pressing plate. The diameter of the thrust spring is smaller than the diameters of the spring support assembly and the pressing plate.

[0007] Preferably, from any of the above solutions, the spring support assembly includes a threaded connection cylinder. In the middle of the outer wall of the threaded connection cylinder, a support baffle is rotatably connected. On one side of the outer wall of the threaded connection cylinder, a rotating head is fixedly connected.

[0008] The technical effects achieved by adopting the above solution are as follows: By rotating the head, it is convenient to rotate the threaded connection cylinder, adjust the distance between the support baffle and the pressing plate, compress the thrust spring, and adjust the thrust. The clamping force can be adjusted according to the hardness of the chemical raw material.

[0009] Preferably, according to any of the above solutions, the width of the guide rod is adapted to the width of the inner wall of the sleeve, and the guide rod is slidably connected to the inner wall of the sleeve.

[0010] The technical effects achieved by adopting the above solution are as follows: By the sliding guidance of the guide rod and the inner wall of the sleeve, swinging can be prevented and stability can be improved.

[0011] Preferably, according to any of the above solutions, when the two clamping jaws are fully opened, the connecting rod is perpendicular to the connecting ear, and when the pressing plate is fully pushed up, the clamping jaws are pulled together.

[0012] The technical effects achieved by adopting the above solution are as follows: By pressing the pressing plate, the guide rod can push the guide rod and the connecting page, so that the two connecting rods push the two clamping jaws apart. Then, after moving the two clamping jaws to both sides of the clamped object, the pressing plate is pushed by the thrust spring, so that the guide rod pushes the guide rod to pull the connecting page, and the two connecting rods pull the two clamping jaws to clamp the object mutually.

[0013] Preferably, according to any of the above solutions, a pull plate is fixedly connected to one end of the sleeve away from the fixed ear, and both sides of the pull plate protrude from the outer wall of the sleeve.

[0014] The technical effects achieved by adopting the above solution are as follows: The pull plate is convenient for the fingers to hook, so as to push the pressing plate.

[0015] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:

[0016] For this chemical raw material safe clamping device, by pressing the pressing plate, the guide rod can push the guide rod and the connecting page, so that the two connecting rods push the two clamping jaws apart. Then, after moving the two clamping jaws to both sides of the clamped object, the pressing plate is pushed by the thrust spring, so that the guide rod pushes the guide rod to pull the connecting page, and the two connecting rods pull the two clamping jaws to clamp the object mutually. Since the clamping force is provided by the thrust of the thrust spring, the clamping of the object is stable. At the same time, by rotating the spring support assembly to adjust the distance from the pressing plate, the thrust spring can be compressed, the thrust can be adjusted, and the clamping force can be adjusted according to the hardness of the chemical raw material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a top view structural schematic of the present utility model;

[0019] Figure 3 For the present utility model Figure 2 is a schematic cross-sectional structure view at A-A in it.

[0020] In the figure: 1 - sleeve, 2 - fixed ear, 3 - clamping pliers body, 4 - pull plate, 5 - guide rod, 6 - pressing plate, 7 - thrust spring, 8 - guide sleeve, 9 - threaded connection cylinder, 10 - support baffle, 11 - connecting page, 12 - connecting rod, 13 - connecting ear, 14 - guide rod. Specific embodiments

[0021] The following further describes the present utility model in conjunction with the attached drawings, but the protection scope of the present utility model is not limited to the following.

[0022] Embodiment 1: As Figures 1 to 3 shown, a chemical raw material safety clamping device includes a sleeve 1. Both sides of one end of the sleeve 1 are fixedly connected with fixed ears 2. Both sides of the inner walls of the two fixed ears 2 are jointly rotatably connected with clamping pliers bodies 3. One ends of the corresponding sides of the two clamping pliers bodies 3 are fixedly connected with connecting ears 13. The center of the end of the sleeve 1 away from the clamping pliers body 3 is fixedly connected with a guide sleeve 8. A guide rod 5 is slidably connected to the inner wall of the guide sleeve 8. One end of the guide rod 5 is fixedly connected with a guide rod 14. One end of the guide rod 14 away from the guide rod 5 is fixedly connected with a connecting page 11. Connecting rods 12 are rotatably connected to both sides of the connecting page 11. One ends of the two connecting rods 12 away from the connecting page 11 are respectively rotatably connected with the connecting ears 13 at one ends of the two clamping pliers bodies 3. One end of the guide rod 5 away from the connecting page 11 is fixedly connected with a pressing plate 6. A spring support assembly is threadedly connected to the outer wall of the guide sleeve 8. A thrust spring 7 is sleeved on one side of the outer wall of the guide rod 5. The thrust spring 7 is between the spring support assembly and the pressing plate 6. The diameter of the thrust spring 7 is smaller than the diameters of the spring support assembly and the pressing plate 6.

[0023] As an optional technical solution of the present utility model, the spring support assembly includes a threaded connection cylinder 9. The middle of the outer wall of the threaded connection cylinder 9 is rotatably connected with a support baffle 10. One side of the outer wall of the threaded connection cylinder 9 is fixedly connected with a rotating head. The threaded connection cylinder 9 is rotated conveniently through the rotating head to adjust the distance between the support baffle 10 and the pressing plate 6 so as to compress the thrust spring 7 and adjust the thrust. The clamping force can be adjusted according to the hardness of the chemical raw material.

[0024] As an optional technical solution of the present utility model, the width of the guide rod 14 is adapted to the width of the inner wall of the sleeve 1. The guide rod 14 is slidably connected to the inner wall of the sleeve 1. Through the sliding guidance of the guide rod 14 and the inner wall of the sleeve 1, swinging can be prevented and the stability can be improved.

[0025] As an alternative technical solution of the present utility model, when the two clamping jaws 3 are fully opened, the connecting rod 12 is perpendicular to the connecting ear 13. When the pressing plate 6 is fully pushed up, the clamping jaws 3 are pulled together. By pressing the pressing plate 6, the guide rod 5 can be made to push the guide rod 14 and the connecting page 11, so that the two connecting rods 12 push open the two clamping jaws 3. Then, after moving the two clamping jaws 3 to both sides of the object to be clamped, the pressing plate 6 is pushed by the thrust spring 7, so that the guide rod 5 pushes the guide rod 14 to pull the connecting page 11, so that the two connecting rods 12 pull the two clamping jaws 3 to clamp the object to each other.

[0026] As an alternative technical solution of the present utility model, a pull plate 4 is fixedly connected to one end of the sleeve 1 away from the fixed ear 2. Both sides of the pull plate 4 protrude from the outer wall of the sleeve 1, and it is convenient for fingers to hook through the pull plate 4 to facilitate pushing the pressing plate 6.

[0027] A chemical raw material safety clamping device has the following working principle:

[0028] 1) By pressing the pressing plate 6, the guide rod 5 can be made to push the guide rod 14 and the connecting page 11, so that the two connecting rods 12 push open the two clamping jaws 3;

[0029] 2) Then, after moving the two clamping jaws 3 to both sides of the object to be clamped, the pressing plate 6 is pushed by the thrust spring 7, so that the guide rod 5 pushes the guide rod 14 to pull the connecting page 11, so that the two connecting rods 12 pull the two clamping jaws 3 to clamp the object to each other;

[0030] 3) Then, after lifting the object, the pressing plate 6 is pushed, so that the guide rod 5 pushes the guide rod 14 and the connecting page 11, so that the two connecting rods 12 push open the two clamping jaws 3, and the chemical raw material falls to the receiving position.

[0031] In summary, for the chemical raw material safety clamping device, by pressing the pressing plate 6, the guide rod 5 can be made to push the guide rod 14 and the connecting page 11, so that the two connecting rods 12 push open the two clamping jaws 3. Then, after moving the two clamping jaws 3 to both sides of the object to be clamped, the pressing plate 6 is pushed by the thrust spring 7, so that the guide rod 5 pushes the guide rod 14 to pull the connecting page 11, so that the two connecting rods 12 pull the two clamping jaws 3 to clamp the object to each other. Since the clamping force is provided by the thrust of the thrust spring 7, the clamping of the object is stable. At the same time, by rotating the spring support assembly to adjust the distance from the pressing plate 6, the thrust spring 7 can be compressed and the thrust can be adjusted, and the clamping force can be adjusted according to the hardness of the chemical raw material.

[0032] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A chemical raw material safety clamping device, characterized in that: It includes a casing (1), on both sides of one end of the casing (1), fixed ears (2) are fixedly connected. On both sides of the inner walls of the two fixed ears (2), clamping jaws (3) are rotatably connected together. At one end of the corresponding sides of the two clamping jaws (3), connection ears (13) are fixedly connected. At the center of the end of the casing (1) far from the clamping jaws (3), a guiding sleeve (8) is fixedly connected. A guiding rod (5) is slidably connected to the inner wall of the guiding sleeve (8). One end of the guiding rod (5) is fixedly connected to a guiding rod (14). The end of the guiding rod (14) far from the guiding rod (5) is fixedly connected to a connecting page (11). On both sides of the connecting page (11), connecting rods (12) are rotatably connected. The ends of the two connecting rods (12) far from the connecting page (11) are respectively rotatably connected to the connection ears (13) at one end of the two clamping jaws (3). The end of the guiding rod (5) far from the connecting page (11) is fixedly connected to a pressing plate (6). A spring support assembly is threadedly connected to the outer wall of the guiding sleeve (8). A thrust spring (7) is sleeved on one side of the outer wall of the guiding rod (5). The thrust spring (7) is between the spring support assembly and the pressing plate (6). The diameter of the thrust spring (7) is smaller than the diameters of the spring support assembly and the pressing plate (6).

2. The chemical raw material safe clamping device according to claim 1, characterized in that: The spring support assembly includes a threaded connection cylinder (9). In the middle of the outer wall of the threaded connection cylinder (9), a support baffle (10) is rotatably connected. On one side of the outer wall of the threaded connection cylinder (9), a rotating head is fixedly connected.

3. The chemical raw material safety clamping device according to claim 2, wherein: The width of the guiding rod (14) is adapted to the width of the inner wall of the casing (1), and the guiding rod (14) is slidably connected to the inner wall of the casing (1).

4. The chemical raw material safe clamping device according to claim 3, characterized in that: When the two clamping jaws (3) are fully opened, the connecting rod (12) is perpendicular to the connection ear (13). When the pressing plate (6) is fully pushed up, the clamping jaws (3) are pulled together.

5. The chemical raw material safe clamping device according to claim 4, characterized in that: At the end of the casing (1) far from the fixed ear (2), a pulling plate (4) is fixedly connected. The two sides of the pulling plate (4) protrude from the outer wall of the casing (1).

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