CN220214999U - Crucible tongs - Google Patents

Abstract

The utility model discloses a crucible tongs, and relates to the technical field of laboratory tools. Including gripping portion and clamping part, gripping portion with connect between the clamping part and be provided with rotatable intermediate head, the one end department activity that is away from of gripping portion intermediate head is provided with the regulation handle, the one end department that is away from of clamping part intermediate head is provided with the clamping assembly, still includes middle traction element, the one end of middle traction element connect in regulation handle, the other end connect in the clamping assembly, the regulation handle is in gripping portion one end activity is in order to stimulate middle traction element and to come indirect pulling clamping assembly to fold in order to centre gripping crucible container through pulling middle traction element. According to the crucible tongs, the clamping end is rotatably connected with the object holding end, the clamping end can be controlled to clamp and clamp the crucible, and the flexibility and the practicability are high.

Description

Crucible tongs

Technical Field

The utility model relates to the technical field of laboratory tools, in particular to a crucible tongs.

Background

The crucible is a container for melting and refining metal liquid and heating and reacting solid and liquid, and is a foundation for ensuring smooth chemical reaction. The common crucible is a circular porcelain container with a certain depth, and the crucible is required to be clamped by a crucible clamp when in use because the temperature of the heated crucible is high.

Chinese patent CN207430341 discloses a special crucible tongs for platinum crucible, including a crucible tongs, couple and bolt, the couple is inserted on locating the crucible tongs, and the bolt makes the couple fixed in the crucible tongs, and the crucible tongs includes left pincers, right pincers and pivot, and the pivot wears to set up to be fixed in left pincers and right pincers. The device is a scissor type crucible tongs, which are transferred to the head end tongs for clamping through the movement of two hand-held handles; however, when the handles of the device are consistent with the jaw movement direction, and when the crucible tongs are used for clamping an open container such as a crucible, the open container is kept in an upward direction, the hands of a user are in a holding posture with the palm centers facing downwards or facing upwards, at the moment, the palm of the user is twisted at a certain angle relative to the elbows, and the holding posture is kept for a long time in experimental operation, so that the muscles of the hands are stiff and the ribs of the elbows are easy to be drawn, and further, the tongs are loosened and the clamped open container falls.

Disclosure of Invention

The utility model provides a crucible tongs, wherein a gripping end of the crucible tongs is rotatably connected with a holding end, and the holding end can control the gripping end to clamp and clamp a crucible, so that the technical problem is solved.

The technical scheme for solving the problems is as follows: the utility model provides a crucible tongs, including gripping portion and clamping part, gripping portion with connect between the clamping part and be provided with rotatable intermediate head, the one end department activity that is away from of gripping portion intermediate head is provided with the regulation handle, the one end department that is away from of clamping part intermediate head is provided with the clamping assembly, still includes middle traction element, the one end of middle traction element connect in regulation handle, the other end connect in the clamping assembly, the regulation handle is in gripping portion one end activity is in order to stimulate middle traction element and to come indirect pulling clamping assembly to fold in order to centre gripping crucible container through pulling middle traction element.

Further, a first inner cavity is formed in the holding portion, a second inner cavity is formed in the clamping portion, the first inner cavity and the second inner cavity are communicated at an intermediate joint to form a hollow inner cavity, and the intermediate traction piece is arranged in the hollow inner cavity.

Further, the intermediate joint is a quick-connect joint; the connection mode of the holding part and the middle joint, and the connection mode of the clamping part and the middle joint are threaded connection or rotatable plug-in connection or rotatable clamping connection or rotatable clamp connection.

Further, a sliding mounting piece with a sliding track is fixedly mounted at one end of the holding part far away from the middle joint, a sliding block is correspondingly mounted at one end of the adjusting handle, and the adjusting handle slides on the sliding mounting piece to move away from or close to the holding part.

Further, a guide pulley is further arranged in the hollow inner cavity and used for guiding and changing the traction extending direction of the middle traction piece in the hollow inner cavity, so that the adjusting handle can be moved close to the holding part to correspondingly pull the clamping assembly to be folded through the middle traction piece.

Further, a first reset elastic piece is further arranged between the adjusting handle and the holding part and used for pushing the adjusting handle to slide away from the holding part.

Further, the clamping assembly comprises a first clamping plate, a second clamping plate and a hinged support, wherein the hinged supports are symmetrically arranged on two sides of the clamping part, the first clamping plate and the second clamping plate are respectively hinged to the hinged supports on two sides of the clamping part, the first clamping plate and the second clamping plate are mutually symmetrical, and one ends, located on the same side of the hinged supports, of the first clamping plate and the second clamping plate are connected with the middle traction piece.

Further, an abutting baffle is further installed at one end of the clamping portion, which is far away from the middle joint, and the abutting baffle is located in the clamping assembly and used for abutting against a crucible container clamped by the clamping assembly.

Further, the one end department of connecting of middle traction element the clamping assembly is provided with the connector, keep away from of clamping part the tip department of middle joint still is provided with the bar through-hole, first splint with between the connector the second splint with connect between the connector and be provided with flexible haulage rope, flexible haulage rope one end follow bar through-hole department stretches into in the cavity inner chamber and with connector fixed connection, the other end is connected in first splint or second splint.

Further, a second reset elastic piece is further arranged in the hollow inner cavity, one end of the second reset elastic piece is connected with the connector, the other end of the second reset elastic piece is abutted to the cavity wall of the hollow inner cavity, and the second reset elastic piece is used for pulling the middle traction piece to move towards the clamping assembly so that the clamping assembly is opened and reset.

The utility model has the beneficial effects that:

1. the holding part and the clamping part are rotatably connected through the middle joint so as to realize relative rotation, thereby facilitating the user to hold the crucible tongs and clamp the crucible container in a comfortable posture and improving the practicability of the crucible tongs.

2. The end of the clamping part is additionally provided with a baffle plate, and the baffle plate can be used for propping against the crucible container clamped by the clamping component so as to further increase the firmness of clamping the container.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.

FIG. 1 is a schematic top view showing the overall structure of a crucible tongs of the present embodiment;

FIG. 2 is a front view schematically showing the overall structure of the crucible tongs of the present embodiment;

FIG. 3 is a schematic view showing the internal structure of the crucible tongs of the present embodiment;

1-gripping part, 2-clamping part, 3-intermediate joint, 4-adjustment handle, 43-slip joint installation piece, 44-slip joint piece, 45-first elastic that resets, 5-clamping component, 51-first splint, 52-second splint, 53-articulated support, 54-second elastic that resets, 6-cavity, 7-intermediate traction piece, 71-connector, 72-flexible haulage rope, 8-guide pulley, 9-butt baffle.

Detailed Description

The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible in this specification are defined with respect to the configurations shown in the drawings, and the terms "inner" and "outer" refer to the relative concepts of the terms toward or away from the geometric center of a particular component, respectively, and thus may be changed accordingly depending on the location and use state of the component. These and other directional terms should not be construed as limiting terms.

Referring to fig. 1 to 3, a crucible tongs according to an embodiment of the present utility model includes a holding portion 1 and a clamping portion 2, an adjusting handle 4 is disposed at an end of the holding portion 1 far from the middle joint 3, a clamping assembly 5 is disposed at an end of the clamping portion 2 far from the middle joint 3, and the adjusting handle 4 is connected with the clamping assembly 5 through an intermediate traction member 7, so that when an operator holds the adjusting handle 4 and applies force to move the adjusting handle 4, the moving adjusting handle 4 can drive the clamping assembly 5 to fold through the intermediate traction member 7 so as to clamp a crucible container.

Specifically, taking the direction shown in fig. 1 as an example, the left end of the grip portion 1 extends vertically downward to form a sliding mounting piece 43, a sliding rail is formed on the left side wall of the sliding mounting piece 43, the adjusting handle 4 is slidably mounted on the sliding mounting piece 43 through a sliding block 44 at the right end of the adjusting handle, and the right end of the second handle is fixedly connected with the left end of the middle traction piece 7. The clamping assembly 5 comprises a first clamping plate 51, a second clamping plate 52 and a hinged support 53, wherein the hinged supports 53 are symmetrically arranged on the upper side and the lower side of the right end of the clamping part 2, the first clamping plate 51 is hinged on the hinged support 53 on the upper side of the right end of the clamping part 2, the second clamping plate 52 is hinged on the hinged support 53 on the lower side of the right end of the clamping part 2, the first clamping plate 51 and the second clamping plate 52 are mutually symmetrical, and the left end of the first clamping plate 51 and the left end of the second clamping plate 52 are simultaneously connected to the right end of the middle traction piece 7.

When the adjusting handle 4 slides relative to the holding part 1 to pull the middle traction piece 7, the middle traction piece 7 correspondingly pulls the first clamping plate 51 to rotate clockwise, and the second clamping plate 52 rotates anticlockwise, so that the first clamping plate 51 and the second clamping plate 52 rotate mutually to close so as to clamp the crucible container.

As one of the preferred items of the present embodiment, in order to protect the intermediate traction member 7, a first inner cavity is provided in the grip portion 1, a second inner cavity is provided in the grip portion 2, the first inner cavity and the second inner cavity are mutually communicated at the intermediate joint 3 to form a hollow inner cavity 6, the intermediate traction member 7 is correspondingly provided in the hollow inner cavity 6, the left end of the intermediate traction member 7 extends into the sliding track from the left end of the first inner cavity to be fixedly connected with the adjustment handle 4, and the right end of the intermediate traction member 7 extends out of the grip portion 2 from the right end of the second inner cavity to be simultaneously connected with the first clamping plate 51 and the second clamping plate 52.

In addition, in the present embodiment, the grip portion 1 and the clamping portion 2 are both of a round rod structure, and the hollow inner cavity 6 is axially provided in the grip portion 1 and the clamping portion 2. Furthermore, the grip portion 2 and the grip portion 1 may be provided with prismatic bodies, or other bar-shaped bodies. Meanwhile, the middle traction piece 7 is a metal rope or a high-toughness rope made of other materials.

As a second preferred aspect of the present embodiment, in order to enable quick connection between the grip portion 1 and the grip portion 2 through the intermediate joint 3, the intermediate joint 3 employs a quick-connect joint. In this embodiment, the hollow inner wall of the intermediate joint 3 is a smooth inner wall, and the grip portion 1 and the holding portion 2 are inserted into the intermediate joint 3 from both ends of the intermediate joint 3, respectively, to be connected to each other.

In addition, internal threads can be also arranged on the hollow inner wall of the intermediate joint 3, external threads are arranged at the connecting ends of the holding part 1 and the clamping part 2, and the holding part 1 and the clamping part 2 are respectively connected with the two ends of the intermediate joint 3 in a threaded connection mode in a threaded manner so as to be connected with each other.

In addition, the connection mode between the middle joint 3 and the holding part 1 and the connection mode between the middle joint 3 and the clamping part 2 can be a rotatable clamping connection mode or a rotatable clamp connection mode, the former is that the middle joint 3 is arranged to be in a clamp ring structure, the middle joint 3 is clamped and connected with the holding part 1 and the clamping part 2 by means of elasticity of the middle joint 3, and the latter is that an annular hoop structure is additionally arranged on the basis of the former.

As a third preferred aspect of the present embodiment, in this embodiment, in order to control the adjustment handle 4 to correspondingly pull the intermediate traction member 7 to fold the clamping assembly 5 and retract the intermediate traction member 7 when moving the close grip portion 1, a plurality of guide pulleys 8 are disposed in the hollow inner cavity 6, the plurality of guide pulleys 8 are disposed in the hollow inner cavity 6 at equal intervals for guiding the intermediate traction member 7, another guide pulley 8 is disposed at the lower end of the sliding track, and the left end of the intermediate traction member 7 must first bypass the guide pulley 8 disposed at the lower end of the sliding track and then be connected to the adjustment handle 4.

When the operator holds the holding part 1, the palm or the holding fingers can be correspondingly folded so that the adjusting handle 4 moves close to the holding part 1 to pull the middle traction piece 7, and then the first clamping plate 51 and the second clamping plate 52 are pulled to rotate to fold each other to clamp the crucible container.

Further, the adjusting handle 4 is arranged parallel to the holding part 1, and a first reset elastic piece 45 is further arranged between the adjusting handle 4 and the holding part 1; when the first reset elastic piece 45 is in a natural state, the adjusting handle 4 is correspondingly positioned at the bottommost end of the sliding connection mounting piece 43, when the adjusting handle 4 moves upwards under the action of external force, the first reset elastic piece 45 is correspondingly in a compressed state, and when the action of external force disappears, the first reset elastic piece 45 can correspondingly push the adjusting handle 4 to move downwards, so that the adjusting handle 4 moves to reset, and the next clamping operation is convenient.

In this embodiment, the first return elastic member 45 is a spring or other highly elastic block.

As a fourth preferred aspect of the present embodiment, in order to enhance the clamping fixing capability of the clamping assembly 5, an abutment baffle 9 is further installed at the end of the clamping portion 2 away from the intermediate joint 3, the abutment baffle 9 is provided in an arc shape, the arc-shaped concave surface of the abutment baffle 9 faces to the right, and the abutment baffle 9 itself has a proper elasticity. When the first clamping plate 51 and the second clamping plate 52 are matched with each other to clamp the crucible container, the clamping force of the first clamping plate 51 and the second clamping plate 52 may push the crucible container to move towards the inner side of the clamping assembly 5, and the abutting baffle 9 can abut against the crucible container at this time, so as to limit the crucible container to further move between the first clamping plate 51 and the second clamping plate 52, and improve the clamping stability of the clamping assembly 5.

As a fifth preferred aspect of the present embodiment, in order to facilitate that the intermediate traction member 7 can simultaneously draw and pull the first clamping plate 51 and the second clamping plate 52, the left end of the intermediate traction member 7 is provided with a connector 71, the connector 71 is also disposed in the hollow inner cavity 6, a bar-shaped through hole is formed at the right top wall of the holding portion 1, the left end of the first clamping plate 51 is connected with the connector 71, the left end of the second clamping plate 52 is connected with the connector 71 through a flexible traction rope 72, and the flexible traction rope 72 passes through the bar-shaped through hole to connect the connector 71 located in the hollow inner cavity 6, and the first clamping plate 51 and the second clamping plate 52 located outside the hollow inner cavity 6.

At the same time, the length of the flexible traction rope 72 is short, so that traction force generated by the movement of the connecting head 71 in the hollow inner cavity 6 can be rapidly applied to the first clamping plate 51 and the second clamping plate 52.

In the present embodiment, the connection head 71 is provided in a spherical shape.

As a sixth preferred item of the present embodiment, a second reset elastic member 54 is disposed in the hollow cavity 6, one end of the second reset elastic member 54 is connected to the right end of the connecting head 71, and the other end is connected to the side wall of the hollow cavity located at the right end of the clamping portion 2; when the second restoring elastic member 54 is in a natural state, the clamping assembly 5 is in an opened state, and when the intermediate traction member 7 pulls the first clamping plate 51 and the second clamping plate 52 to rotate so as to close and clamp the crucible container, the second restoring elastic member 54 correspondingly enters a stretched state; when the crucible container is to be put down, the first reset elastic member 45 is reset firstly to push the adjusting handle 4 to move downwards, the middle traction member 7 generates a loosening trend, and the second reset elastic member 54 is reset and pulls the connecting head 71 to move rightwards, so that the first clamping plate 51 and the second clamping plate 52 are indirectly driven to rotate and reset to be opened.

In this embodiment, the second return elastic member 54 is also a spring or other highly elastic block.

The above is applicable to the prior art, where nothing is mentioned.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides a crucible tongs, includes gripping portion (1) and clamping part (2), its characterized in that, gripping portion (1) with connect between clamping part (2) and be provided with rotatable intermediate head (3), the one end department activity of keeping away from of gripping portion (1) intermediate head (3) is provided with regulation handle (4), the one end department of keeping away from of clamping part (2) intermediate head (3) is provided with clamping assembly (5), still includes middle traction member (7), the one end of middle traction member (7) connect in regulation handle (4), the other end connect in clamping assembly (5), regulation handle (4) are in gripping portion (1) one end activity is in order to stimulate middle traction member (7) and is closed in order to centre gripping crucible container through pulling middle traction member (7) indirect pulling clamping assembly (5).

2. Crucible tongs according to claim 1, characterized in that a first inner cavity is provided in the gripping part (1), a second inner cavity is provided in the clamping part (2), and the first inner cavity and the second inner cavity are communicated at the intermediate joint (3) to form a hollow inner cavity (6), the intermediate traction member (7) being arranged in the hollow inner cavity (6).

3. Crucible tongs according to claim 1, characterized in that the intermediate joint (3) is a quick-connect joint; the connection mode of the holding part (1) and the middle joint (3) and the connection mode of the clamping part (2) and the middle joint (3) are threaded connection or rotatable plug connection or rotatable clamping connection or rotatable clamp connection.

4. Crucible tongs according to claim 1, characterized in that a slip-connection mounting (43) with a slip-connection track is also fixedly mounted at the end of the gripping section (1) remote from the intermediate joint (3), a slip-connection block (44) being correspondingly mounted at one end of the adjustment handle (4), the adjustment handle (4) being movable slidingly on the slip-connection mounting (43) for moving away from or towards the gripping section (1).

5. Crucible tongs according to claim 2, characterized in that a guide pulley (8) is also provided in the hollow interior (6), the guide pulley (8) being used for guiding the change of the traction extension direction of the intermediate traction element (7) in the hollow interior (6) in such a way that the adjustment handle (4) can be moved close to the grip (1) in order to draw the clamping assembly (5) together correspondingly by means of the intermediate traction element (7).

6. Crucible tongs according to claim 5, characterized in that a first return spring (45) is also provided between the adjustment handle (4) and the grip (1), the first return spring (45) being used to push the adjustment handle (4) to slide away from the grip (1).

7. The crucible tongs as claimed in claim 1, characterized in that the holding assembly (5) comprises a first clamping plate (51), a second clamping plate (52) and a hinged support (53), the hinged support (53) is symmetrically arranged on two sides of the holding portion (2), the first clamping plate (51) and the second clamping plate (52) are respectively hinged on the hinged support (53) on two sides of the holding portion (2), the first clamping plate (51) and the second clamping plate (52) are mutually symmetrical, and one ends of the first clamping plate (51) and the second clamping plate (52) which are positioned on the same side of the hinged support (53) are connected with the middle traction piece (7).

8. Crucible tongs according to claim 1, characterized in that an abutment baffle (9) is also mounted at the end of the clamping section (2) remote from the intermediate joint (3), which abutment baffle (9) is located in the clamping assembly (5) and serves to abut against a crucible container clamped by the clamping assembly (5).

9. The crucible tongs as claimed in claim 7, characterized in that a connector (71) is provided at one end of the intermediate traction member (7) connected with the clamping assembly (5), a strip-shaped through hole is further provided at the end of the clamping portion (2) far away from the intermediate joint (3), a flexible traction rope (72) is provided between the first clamping plate (51) and the connector (71) and between the second clamping plate (52) and the connector (71), and one end of the flexible traction rope (72) extends into the hollow inner cavity (6) from the strip-shaped through hole and is fixedly connected with the connector (71), and the other end of the flexible traction rope is connected with the first clamping plate (51) or the second clamping plate (52).

10. The crucible tongs as claimed in claim 9, wherein a second restoring elastic member (54) is further disposed in the hollow inner cavity (6), one end of the second restoring elastic member (54) is connected to the connector (71), the other end of the second restoring elastic member abuts against a cavity wall of the hollow inner cavity (6), and the second restoring elastic member (54) is used for pulling the intermediate traction member (7) to move towards the clamping assembly (5) so as to enable the clamping assembly (5) to be opened and restored.