Crucible tongs

Abstract

The utility model discloses a crucible clamp, which belongs to the technical field of experimental appliances and comprises a first clamp arm, a second clamp arm and a third clamp arm, the first clamp arm comprises a first holding part, a first connecting part and a first mounting part which are sequentially connected, and the joint of the first connecting part and the first holding part is arranged at an obtuse angle; the joint of the first connecting part and the first mounting part is arranged at a right angle; the second clamp arm comprises a second holding part, a second connecting part and a second mounting part which are connected in sequence, the connecting position of the second connecting part and the second holding part is arranged at an obtuse angle, the connecting position of the second connecting part and the second mounting part is arranged at a right angle, and the first connecting part and the second connecting part are hinged in a crossed mode; the clamping pieces are arranged on the first mounting part and the second mounting part, and the two clamping pieces are clamped on the two sides of the crucible respectively. The crucible tongs provided by the utility model are suitable for taking and placing the graphite crucible in the small well type resistance furnace, and the graphite crucible is uniformly stressed and is stably taken and placed.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental tools, and more specifically, to a crucible tongs. Background Art

[0002] Crucible tongs are commonly used tools in production and experiments, mainly used to clamp crucibles. In laboratory pilot experiments, small pit-type resistance furnaces are often used to heat crucibles and melt aluminum alloys in crucibles. Crucible tongs on the market have a fixed shape and are usually small in size, which is not suitable for taking and placing graphite crucibles containing molten aluminum in pit-type resistance furnaces. If ordinary fire tongs are used to vertically clamp one side of the outer wall of the graphite crucible, the graphite crucible will be subjected to concentrated and uneven force, and the graphite crucible will become brittle if used for a long time under high temperature, and there is a risk of breaking and falling during casting, causing the high-temperature molten liquid to spill and injure people. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a new type of crucible tongs suitable for small pit type resistance furnaces to solve the problems existing in the prior art.

[0004] To achieve the above purpose, the technical solution of the utility model is:

[0005] A crucible tongs, comprising:

[0006] A first clamp arm, comprising a first gripping portion, a first connecting portion and a first mounting portion connected in sequence, wherein the first connecting portion and the first gripping portion are connected at an obtuse angle, and the first connecting portion and the first mounting portion are connected at a right angle;

[0007] The second clamp arm comprises a second gripping portion, a second connecting portion and a second mounting portion which are connected in sequence, wherein the second connecting portion and the second gripping portion are connected at an obtuse angle and are consistent with the angle of the first connecting portion and the first gripping portion, the second connecting portion and the second mounting portion are connected at a right angle, and the first connecting portion and the second connecting portion are cross-hinged with each other;

[0008] The clamping piece is used to clamp one side of the crucible. The first mounting portion and the second mounting portion are both provided with the clamping piece, and the two clamping pieces are respectively clamped on two sides of the crucible.

[0009] Furthermore, the clamping member comprises a connecting plate and an arc-shaped crucible ring, the lower ends of the first mounting portion and the second mounting portion are both connected to the connecting plate, and the bottom of the connecting plate is connected to the crucible ring.

[0010] Furthermore, the length of the crucible ring is not less than one quarter of the circumference of the circle where the crucible side wall is clamped.

[0011] Furthermore, the length of the connecting plate is 1 / 3 to 2 / 5 of the height of the crucible it clamps.

[0012] Furthermore, an L-shaped baffle member is also provided at the upper end of the first mounting portion and / or the second mounting portion.

[0013] Further, the first connecting part includes a connecting rod A and a connecting rod B connected to each other, the connection between the connecting rod A and the connecting rod B is at an obtuse angle and is a hinge point with the second connecting part, and the second connecting part includes a connecting rod C and a connecting rod D, the connection between the connecting rod C and the connecting rod D is at an obtuse angle and is a hinge point with the first connecting part.

[0014] Furthermore, heat-insulating and anti-slip handles are provided at the ends of the first gripping portion and the second gripping portion.

[0015] Furthermore, the first gripping portion, the first connecting portion and the first mounting portion are an integrally formed structure, and the second gripping portion, the second connecting portion and the second mounting portion are also an integrally formed structure.

[0016] The beneficial effects of the utility model are:

[0017] The crucible tongs provided by the utility model have the rear parts of the two tongs arms in an obtuse-angle L-shape, that is, the connection between the first gripping portion of the first tongs arm and the first connecting portion is set to be connected at an obtuse angle, and the connection between the second gripping portion of the second tongs arm and the second connecting portion is set to be connected at an obtuse angle, so that the gripping portion and the clamping piece can be kept at a certain distance, thereby reducing the risk of being scalded, and the angle of the crucible tongs can be easily adjusted, and the grip is more comfortable when used; the front parts of the two tongs arms are in a right-angle L-shape, that is, the connection between the first connecting portion of the first tongs arm and the first mounting portion is set at a right angle, and the connection between the second connecting portion of the second tongs arm and the second mounting portion is set at a right angle, which can make the crucible tongs more stable when clamping the crucible, not easy to slip or shake, thereby ensuring the safety and accuracy of the experiment; the whole is suitable for taking and placing the graphite crucible in a small pit-type resistance furnace, and the graphite crucible is subjected to uniform force, and the taking and placing is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2It is a schematic diagram of the structure of the utility model in use state.

[0021] Figure 3 It is a structural schematic diagram of the first clamp arm in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the second clamp arm in the utility model.

[0023] Description of reference numerals:

[0024] 1. first clamp arm; 11. first gripping portion; 12. first connecting portion; 121. connecting rod A; 122. connecting rod B; 13. first mounting portion;

[0025] 2. second clamp arm; 21. second gripping portion; 22. second connecting portion; 221. connecting rod C; 222. connecting rod D; 23. second mounting portion;

[0026] 3. Clamping member; 31. Connecting plate; 32. Crucible ring; 33. L-shaped baffle member;

[0027] 4. Heat-insulating and non-slip handle;

[0028] 5. Pin;

[0029] 10. Crucible. DETAILED DESCRIPTION

[0030] The structure provided by the utility model is explained and illustrated in detail below in conjunction with the accompanying drawings of the specification.

[0031] refer to Figures 1 to 4 This embodiment specifically discloses a crucible tongs, including:

[0032] The first clamp arm 1 comprises a first gripping portion 11, a first connecting portion 12 and a first mounting portion 13 which are connected in sequence, wherein the connection between the first connecting portion 12 and the first gripping portion 11 is arranged at an obtuse angle, and the connection between the first connecting portion 12 and the first mounting portion 13 is arranged at a right angle; the first gripping portion 11, the first connecting portion 12 and the first mounting portion 13 are an integrally formed structure, i.e., the first clamp arm 1 as a whole can be made of square steel with a cross-sectional side length of 8mm-10mm, with one end close to the crucible as the front end of the crucible clamp, and the rear part of the first clamp arm 1 is arranged to be an obtuse-angled L-shape as a whole, i.e., it can be bent into an obtuse-angled L-shape, and the specific angle can be adjusted and set according to actual conditions, and no specific limitation is made here, and the front part of the first clamp arm 1 as a whole can be bent into a right-angled L-shape;

[0033] The second clamp arm 2 comprises a second gripping portion 21, a second connecting portion 22 and a second mounting portion 23 which are connected in sequence. The connection between the second connecting portion 22 and the second gripping portion 21 is arranged at an obtuse angle, and is consistent with the angle between the first connecting portion 12 and the first gripping portion 11. The connection between the second connecting portion 22 and the second mounting portion 23 is arranged at a right angle. The first connecting portion 12 and the second connecting portion 22 are cross-hinged with each other, and can be specifically hinged through a pin 5. Similarly, the second gripping portion 21, the second connecting portion 22 and the second mounting portion 23 are also an integrally formed structure, that is, the second clamp arm 2 as a whole can be made of square steel with a cross-sectional side length of 8mm-10mm. The second clamp arm 2 has the same structure as the first clamp arm 1 and is arranged in a mirror image of each other.

[0034] The clamping member 3 is used to clamp one side of the crucible 10 . The first mounting portion 13 and the second mounting portion 23 are both provided with the clamping member 3 . The two clamping members 3 are respectively clamped on two sides of the crucible 10 .

[0035] Specifically, the first connecting portion 12 includes a connecting rod A121 and a connecting rod B122 connected to each other, one end of the connecting rod A121 is connected to the first gripping portion 11, and the other end is connected to the connecting rod B122, the connection between the connecting rod A121 and the connecting rod B122 is at an obtuse angle and is a hinge point with the second connecting portion 22, and the other end of the connecting rod B122 is connected to the first mounting portion 13; the second connecting portion 22 includes a connecting rod C221 and a connecting rod D222, one end of the connecting rod C221 is connected to the first gripping portion 11, and the other end of the connecting rod B122 is connected to the first mounting portion 13; One end is connected to the second gripping portion 21, and the other end is connected to the connecting rod D222. The connection between the connecting rod C221 and the connecting rod D222 is at an obtuse angle and is a hinge point with the first connecting portion 12. The other end of the connecting rod D222 is connected to the second mounting portion 23. The first connecting portion 12 and the second connecting portion 22 are arranged as bent connecting rods, thereby shortening the length of the first connecting portion 12 and the second connecting portion 22 to a certain extent, and also making the gripping end of the crucible tongs more flexible in adjustment.

[0036] In this embodiment, the rear parts of the two clamp arms are set to be obtuse-angled L-shaped, that is, the connection between the first gripping portion 11 of the first clamp arm 1 and the first connecting portion 12 is set to be connected at an obtuse angle, and the connection between the second gripping portion 21 of the second clamp arm 2 and the second connecting portion 22 is set to be connected at an obtuse angle, so that the gripping portion and the clamping member can maintain a certain distance, thereby reducing the risk of burns, and the angle of the crucible tongs can be easily adjusted, and the grip is more comfortable when used; the front parts of the two clamp arms are set to be right-angled L-shaped, that is, the connection between the first connecting portion 12 of the first clamp arm 1 and the first mounting portion 13 is set at a right angle, and the connection between the second connecting portion 22 of the second clamp arm 2 and the second mounting portion 23 is set at a right angle, which can make the crucible tongs more stable when clamping the crucible, not easy to slip or shake, thereby ensuring the safety and accuracy of the experiment; the whole is suitable for taking and placing graphite crucibles in small pit-type resistance furnaces, and makes the graphite crucibles evenly stressed and stable to take and place.

[0037] In some preferred embodiments, the first mounting portion 13 and the second mounting portion 23 may be configured as an arc-shaped structure adapted to the crucible to improve the fit with the crucible. Of course, the processing cost will also increase accordingly.

[0038] Combination Figure 1 As shown, in some embodiments, the clamping member 3 includes a connecting plate 31 and an arc-shaped crucible ring 32, the lower ends of the first mounting portion 13 and the second mounting portion 23 are connected to the connecting plate 31, and the bottom of the connecting plate 31 is connected to the crucible ring 32; the connecting plate 31 is a plate-like structure, made of steel plate, high temperature resistant, and its thickness can be selected from 4mm to 6mm, and the connection method with the first mounting portion 13 and the second mounting portion 23 is welding and fixing to ensure the connection stability; the length of the connecting plate 31 can be determined according to the depth of the pit-type resistance furnace. In this embodiment, the length of the connecting plate 31 is the length of the crucible clamping plate 31. 10 is 1 / 3 to 2 / 5 of the height, which can clamp the crucible ring 32 at 1 / 3 to 2 / 5 of the lower top of the crucible to ensure clamping stability; the crucible ring 32 can also be made of square steel with a cross-sectional side length of 6mm to 8mm, and can be bent into an arc that is compatible with the diameter of the clamping position of the clamped graphite crucible, and its length is at least 1 / 4 of the circumference of the clamping position. The crucible rings 32 on both sides can be clamped together to at least clamp 1 / 2 of the circumference, thereby ensuring clamping stability; of course, in some preferred embodiments, the connecting plate 31 can also be bent into an arc that is compatible with the clamping crucible.

[0039] Furthermore, an L-shaped baffle member 33 is further disposed at the upper end of the first mounting portion 13 and / or the second mounting portion 23. The number of L-shaped baffle members 33 is usually two, and both L-shaped baffle members 33 can be disposed on the first mounting portion 13 and / or the second mounting portion 23. Figure 3As shown, only one L-shaped baffle member 33 is provided at the upper end of the first mounting portion 13, and another L-shaped baffle member 33 is provided on the connecting rod B122, and the two L-shaped baffle members 33 jointly fix the crucible; when pouring the casting liquid, it can be poured toward the side where the L-shaped baffle member 33 is not provided to avoid contact with the L-shaped baffle member 33, and at the same time, it can have a certain fixing effect on the crucible when pouring, preventing the crucible from sliding to complete a casting.

[0040] In some embodiments, the ends of the first gripping portion 11 and the second gripping portion 21 are both provided with a heat-insulating and anti-slip handle 4, and there is no requirement for the material thereof, which can be selected according to actual needs, such as high-temperature resistant leather, rubber, alumina fiber, ceramic fiber material, etc., which can have a heat-insulating and anti-slip effect, avoid burns, and improve the safety of experimental operations.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any at least one embodiment or example. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution and simple improvement made to the essential content of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crucible tongs, characterized in that: include: A first clamp arm (1), comprising a first gripping portion (11), a first connecting portion (12) and a first mounting portion (13) connected in sequence, wherein the first connecting portion (12) and the first gripping portion (11) are connected at an obtuse angle, and the first connecting portion (12) and the first mounting portion (13) are connected at a right angle; The second clamp arm (2) comprises a second gripping portion (21), a second connecting portion (22) and a second mounting portion (23) which are connected in sequence, wherein the second connecting portion (22) and the second gripping portion (21) are connected at an obtuse angle and are consistent with the angle at which the first connecting portion (12) and the first gripping portion (11) are connected, the second connecting portion (22) and the second mounting portion (23) are connected at a right angle, and the first connecting portion (12) and the second connecting portion (22) are cross-hinged with each other; A clamping member (3) is used to clamp one side of the crucible (10), the first mounting portion (13) and the second mounting portion (23) are both provided with the clamping member (3), and the two clamping members (3) are respectively clamped on two sides of the crucible (10).

2. The crucible tongs according to claim 1, characterized in that: The clamping member (3) comprises a connecting plate (31) and an arc-shaped crucible ring (32); the lower ends of the first mounting portion (13) and the second mounting portion (23) are both connected to the connecting plate (31); and the bottom of the connecting plate (31) is connected to the crucible ring (32).

3. The crucible tongs according to claim 2, characterized in that: The length of the crucible ring (32) is not less than one quarter of the circumference of the circle where the crucible (10) side wall is clamped.

4. The crucible tongs according to claim 2, characterized in that: The length of the connecting plate (31) is 1 / 3 to 2 / 5 of the height of the crucible (10) it clamps.

5. The crucible tongs according to claim 1, characterized in that: An L-shaped baffle member (33) is also provided at the upper end of the first mounting portion (13) and / or the second mounting portion (23).

6. The crucible tongs according to claim 1, characterized in that: The first connecting part (12) includes a connecting rod A (121) and a connecting rod B (122) which are connected to each other, wherein the connection point between the connecting rod A (121) and the connecting rod B (122) is an obtuse angle and is a hinge point with the second connecting part (22), and the second connecting part (22) includes a connecting rod C (221) and a connecting rod D (222), wherein the connection point between the connecting rod C (221) and the connecting rod D (222) is an obtuse angle and is a hinge point with the first connecting part (12).

7. The crucible tongs according to claim 1, characterized in that: The ends of the first gripping portion (11) and the second gripping portion (21) are both provided with heat-insulating and anti-slip handles (4).

8. The crucible tongs according to claim 1, characterized in that: The first gripping portion (11), the first connecting portion (12) and the first mounting portion (13) are an integrally formed structure, and the second gripping portion (21), the second connecting portion (22) and the second mounting portion (23) are also an integrally formed structure.

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