Telescopic labor-saving crucible tongs

Abstract

The utility model provides a telescopic labor-saving crucible clamp, which relates to the technical field of laboratory tools and comprises a clamp mouth component, a telescopic component is arranged at one end of the clamp mouth component, a fixed buckle component is arranged in the middle of the telescopic component, the clamp mouth component comprises two arc-shaped clamp mouths, and the two arc-shaped clamp mouths are arranged on the clamp mouth component. The telescopic assembly comprises a telescopic outer rod and a telescopic inner rod, and the fixing buckle assembly comprises a buckle body structure. The square protruding clamping groove is distributed in the inner wall of the telescopic outer rod, the telescopic inner rod is attached to the interior of the telescopic outer rod, the telescopic groove is formed in the outer wall and is complementary with the protruding clamping groove in the inner wall of the telescopic outer rod, the telescopic inner rod can move in the vertical direction relative to the telescopic outer rod, and the telescopic outer rod is restrained by the protruding groove and does not rotate or move; the locking rod gasket is arranged between the locking rod and the telescopic groove, the handle cylinder is pulled to extrude the locking rod gasket downwards, the telescopic rod is fixed through the locking groove and does not move, and an operator can conveniently and flexibly adjust the length of the clamp body according to actual needs.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory tools and apparatuses, in particular to a retractable, labor-saving crucible tongs. Background Art

[0002] Crucible tongs are commonly used clamping instruments in laboratories, mostly made of stainless steel, and are commonly used to clamp objects such as crucibles and evaporating dishes.

[0003] In the prior art, such as the patent publication number: CN202933725U "A Crucible Pliers", includes a crucible pliers mouth, one side of the crucible pliers mouth is connected to the arc-shaped curved surface at the front end of the crucible shaft, the left end of the arc-shaped curved surface at the front end of the crucible shaft is connected to the right crucible pliers outer diameter handle through the crucible pliers shaft, the right end of the arc-shaped curved surface at the front end of the crucible shaft is connected to the left crucible pliers outer diameter handle through the crucible pliers shaft, the other side of the right crucible pliers outer diameter handle is connected to the right crucible pliers inner diameter handle, the other side of the left crucible pliers outer diameter handle is connected to the left crucible pliers inner diameter, the ends of the left crucible pliers inner diameter and right crucible pliers inner diameter handles are connected to crucible pliers handles, the left crucible pliers outer diameter handle and the left crucible pliers inner diameter, the right crucible pliers outer diameter handle and the right crucible pliers inner diameter handle are connected through adjustable crucible pliers screws. The utility model has a simple structure, the length of the crucible tongs handle can be adjusted automatically, and the use is convenient. At the same time, damage to the heating vessel and scalding of the operator are avoided, thus saving money.

[0004] However, the existing crucible tongs are not flexible in length adjustment and have a double-handle clamping design, making it difficult to control the clamping force. In addition, during high-temperature tests, thermal insulation gloves are often required, which are thick and clumsy, further hindering the normal use of the crucible tongs. Utility Model Content

[0005] The purpose of the utility model is to solve the problems in the prior art that the crucible tongs are not flexible in length adjustment, have a double-handle clamping design, and are difficult to control the clamping force. In addition, during high-temperature tests, heat-insulating gloves are often worn, and such gloves are thick and clumsy, which further hinders the normal use of the crucible tongs. The utility model proposes a retractable and labor-saving crucible tongs.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a retractable and labor-saving crucible pliers, comprising a pliers mouth assembly, a telescopic assembly is provided at one end of the pliers mouth assembly, a fixed buckle assembly is provided in the middle of the telescopic assembly, the pliers mouth assembly includes two arc-shaped pliers mouths, the telescopic assembly includes a telescopic outer rod and a telescopic inner rod, the fixed buckle assembly includes a buckle main structure, and the buckle main structure is arranged on the outside of the connection between the telescopic outer rod and the telescopic inner rod.

[0007] Preferably, a locking rod is connected to the top of the buckle main body structure, and a locking rod gasket is installed on the outer wall of the telescopic outer rod.

[0008] Preferably, a pliers mouth support rod is installed on the side of the arc-shaped pliers mouth, and the tail of the arc-shaped pliers mouth is connected to a pliers mouth tail.

[0009] Preferably, a telescopic groove is provided on the top of the telescopic inner rod, and the telescopic inner rod moves inside the telescopic outer rod.

[0010] Preferably, the tops of the two arc-shaped pliers jaws are movably connected.

[0011] Preferably, a small circular hole is provided inside the locking rod.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the utility model, a square raised groove is distributed on the inner wall of the telescopic outer rod, and the telescopic inner rod fits inside the telescopic outer rod. The outer wall is provided with a telescopic groove which complements the raised groove on the inner wall of the telescopic outer rod. The telescopic inner rod can move in the vertical direction relative to the telescopic outer rod, and the convex groove of the telescopic outer rod constrains it from rotational displacement. A locking rod gasket is provided between the locking rod and the telescopic groove. The locking rod gasket is squeezed downward by bending the handle cylinder, and the telescopic rod is fixed by the locking groove without displacement, which facilitates the operator to flexibly adjust the length of the pliers body according to actual needs without replacing tools of different specifications, thereby improving the convenience of operation and further improving work efficiency.

[0014] 2. In the utility model, a fixed axis is inserted through the middle opening of the arc-shaped pliers mouth and the opening of the pliers mouth support rod. The pliers mouth can open and close and rotate relative to the support rod. The arc-shaped pliers mouths on both sides cooperate to rotate to clamp objects. The contraction line is passed through the opening at the tail of the pliers mouth. Pulling the contraction line can make the arc-shaped pliers mouth bite. A pressing handle is distributed at the tail of the telescopic inner rod. The handle is connected to the pliers mouth clamping contraction line. The contraction line is distributed inside the telescopic rod, passes through the telescopic rod and connects the pressing handle and the arc-shaped pliers mouth. The arc-shaped pliers mouth is controlled by pressing the handle downward. The crucible is conveniently clamped by one hand, and there is no need for the cooperation of both hands, which saves operation time and helps to improve the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional structural diagram of a retractable and labor-saving crucible tongs;

[0016] Figure 2 The utility model provides a schematic structural diagram of a jaw assembly of a retractable, labor-saving crucible tongs;

[0017] Figure 3 The utility model provides a schematic structural diagram of a telescopic rod fixing buckle assembly of a telescopic labor-saving crucible tongs;

[0018] Figure 4This is a schematic structural diagram of another angle of a telescopic rod fixing buckle assembly of a telescopic labor-saving crucible tongs proposed by the utility model;

[0019] Figure 5 The utility model provides a partial structural schematic diagram of a retractable labor-saving crucible tongs.

[0020] Legend: 1. Pliers jaw assembly; 101. Curved pliers jaw; 102. Pliers jaw support rod; 103. Pliers jaw tail; 2. Fixed buckle assembly; 201. Buckle main structure; 202. Locking rod; 203. Locking rod gasket; 3. Telescopic assembly; 301. Telescopic outer rod; 302. Telescopic inner rod; 303. Telescopic groove. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: Figure 1-Figure 5 As shown, the utility model provides a technical solution: a retractable labor-saving crucible pliers, including a pliers mouth assembly 1, a telescopic assembly 3 is provided at one end of the pliers mouth assembly 1, a fixed buckle assembly 2 is provided in the middle of the telescopic assembly 3, the pliers mouth assembly 1 includes two arc-shaped pliers mouths 101, the telescopic assembly 3 includes a telescopic outer rod 301 and a telescopic inner rod 302, the fixed buckle assembly 2 includes a buckle main body structure 201, the buckle main body structure 201 is provided at the connection between the telescopic outer rod 301 and the telescopic inner rod 302 On the outside, the top of the buckle main structure 201 is connected to a locking rod 202, the outer wall of the telescopic outer rod 301 is installed with a locking rod gasket 203, the side of the arc-shaped pliers mouth 101 is installed with a pliers mouth support rod 102, the tail of the arc-shaped pliers mouth 101 is connected to the pliers mouth tail 103, and a telescopic groove 303 is provided on the top of the telescopic inner rod 302. The telescopic inner rod 302 moves inside the telescopic outer rod 301. The tops of the two arc-shaped pliers mouths 101 are movably connected, and a small round hole is provided inside the locking rod 202.

[0024] In this embodiment, the arc-shaped pliers mouth 101 is located at the top of the crucible pliers, with one piece on each side symmetrically distributed. The top of the arc-shaped pliers mouth 101 can fit, and the inner side of the arc-shaped pliers mouth 101 is distributed with fine teeth, thereby making the arc-shaped pliers mouth 101 more suitable for round utensils such as crucibles and evaporating dishes commonly used in laboratories. The material of the arc-shaped pliers mouth 101 is 304 stainless steel, which improves the durability of the pliers mouth assembly 1. The middle part of the arc-shaped pliers mouth 101 is opened, and a fixed shaft is inserted through the opening of the pliers mouth support rod 102. The pliers mouth can be opened and closed relative to the support rod, and the arc-shaped pliers mouths 1 on both sides are opened and closed. 01 cooperates with the rotation to clamp the object, the tail of the pliers mouth 103 is opened with a contraction line, and the arc-shaped pliers mouth 101 is engaged by pulling the contraction line. The contraction line is made of high-temperature resistant steel wire, which passes through the inside of the contraction rod and connects to the pressing handle at the tail of the contraction rod. There are two pliers mouth support rods 102, which are symmetrically fixed on both sides of the top of the telescopic rod in an inverted eight shape; the telescopic component 3 is a cylindrical hollow tube, which is composed of a telescopic outer rod 301 and a telescopic inner rod 302; the telescopic outer rod 301 is outside, and the top is connected to the tail of the pliers mouth 103. The tail is equipped with a fixed buckle component 2, and the inner wall of the telescopic outer rod 301 is distributed A square raised slot, the telescopic inner rod 302 fits inside the telescopic outer rod 301, and the outer wall is provided with a telescopic groove 303 which complements the raised slot on the inner wall of the telescopic outer rod 301, which facilitates the vertical movement of the telescopic inner rod 302 relative to the telescopic outer rod 301. The convex slot of the telescopic outer rod 301 does not restrain the rotational displacement. A pressing handle is distributed at the tail of the telescopic inner rod 302, and the handle is connected to the pliers mouth clamping contraction line. The contraction line is distributed inside the telescopic rod, passes through the telescopic rod and connects the pressing handle and the arc-shaped pliers mouth 101. The arc-shaped pliers mouth 101 is controlled by pressing the handle downward. Clamping, a fixed buckle assembly 2 is installed at the tail of the telescopic outer rod 301, and the fixed buckle assembly 2 is composed of a buckle main structure 201, a locking rod 202, and a locking rod gasket 203; the buckle main structure 201 structurally constrains the locking rod 202 and the locking rod gasket 203; the locking rod 202 is composed of a small handle and a cylinder, and a small circular hole is opened at an eccentric position on the cylinder, and a fixed bearing is inserted through the small circular hole. A locking rod gasket 203 is provided between the locking rod 202 and the telescopic groove 303. The handle cylinder is bent to squeeze the locking rod gasket 203 downward, and the telescopic rod is fixed by the locking groove to prevent displacement.

[0025] The working principle of this embodiment is as follows: when in use, first, a hole is opened in the middle of the arc-shaped pliers mouth 101, and a fixed axis is inserted through the hole of the pliers mouth support rod 102. The pliers mouth can be opened and closed relative to the support rod. The arc-shaped pliers mouths 101 on both sides rotate together to clamp objects. The hole 103 at the tail of the pliers mouth is penetrated by the contraction line. Pulling the contraction line can make the arc-shaped pliers mouth 101 bite. A square raised card slot is distributed on the inner wall of the telescopic outer rod 301. The telescopic inner rod 302 fits inside the telescopic outer rod 301. The outer wall is provided with a telescopic groove 303 and the inner wall protrusion of the telescopic outer rod 301 The slots are complementary, which facilitates the vertical movement of the telescopic inner rod 302 relative to the telescopic outer rod 301. A locking rod gasket 203 is provided between the locking rod 202 and the telescopic groove 303. The handle cylinder is bent to squeeze the locking rod gasket 203 downward, and the telescopic rod is fixed by the locking groove to prevent displacement. A pressing handle is distributed at the tail of the telescopic inner rod 302, and the handle is connected to the pliers jaw clamping retraction line. The retraction line is distributed inside the telescopic rod, passes through the telescopic rod and connects the pressing handle and the arc-shaped pliers jaw 101. The clamping of the arc-shaped pliers jaw 101 is controlled by pressing the handle downward.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A retractable, labor-saving crucible tongs, comprising a tongs mouth assembly (1), characterized in that: A telescopic assembly (3) is provided at one end of the pliers mouth assembly (1), a fixed buckle assembly (2) is provided in the middle of the telescopic assembly (3), the pliers mouth assembly (1) comprises two arc-shaped pliers mouths (101), the telescopic assembly (3) comprises a telescopic outer rod (301) and a telescopic inner rod (302), the fixed buckle assembly (2) comprises a buckle main body structure (201), and the buckle main body structure (201) is provided on the outside of the connection between the telescopic outer rod (301) and the telescopic inner rod (302).

2. The retractable labor-saving crucible tongs according to claim 1, characterized in that: The top of the buckle main structure (201) is connected to a locking rod (202), and the outer wall of the telescopic outer rod (301) is installed with a locking rod gasket (203).

3. The retractable labor-saving crucible tongs according to claim 1, characterized in that: A pliers mouth support rod (102) is installed on the side of the arc-shaped pliers mouth (101), and the tail of the arc-shaped pliers mouth (101) is connected to a pliers mouth tail (103).

4. The retractable labor-saving crucible tongs according to claim 1, characterized in that: A telescopic groove (303) is provided on the top of the telescopic inner rod (302), and the telescopic inner rod (302) moves inside the telescopic outer rod (301).

5. The retractable labor-saving crucible tongs according to claim 1, characterized in that: The tops of the two arc-shaped pliers mouths (101) are movably connected.

6. The retractable labor-saving crucible tongs according to claim 2, characterized in that: A small circular hole is provided inside the locking rod (202).

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