Crucible tongs
By designing a crucible tong with a limiting compartment, skateboard, fixed board, arc clamp, pulling board and spring, the problems of crucible tongs are prone to tilt and slipping during the experiment, and the stable removal of crucible and the improvement of experimental safety are achieved.
Patent Information
- Application Number
- CN202421728854.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In chemical and chemical experiments, common crucible tongs are prone to phenomena such as shaft tilt, slipping, pouring, crucible cover falling off, and melting and burning of auxiliary materials during the clamping of crucibles, resulting in the crucible breakage and affecting the safety of the experiment.
A crucible tong is designed, using a rectangular frame-shaped bracket, equipped with a limiting compartment, a slider, a fixed plate, a arc card, a pull plate and a spring. Through the joint action of the arc card and a pressing plate, the crucible is fixed to ensure stable removal.
It effectively avoids the tilt, slip, pouring and cover falling during use of the crucible tongs, ensuring stable removal of the crucible, reducing the risk of crucible breakage, and improving experimental safety.
Smart Images
Figure CN222872232U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a common tool for chemistry, chemical engineering teaching experiments and scientific research, in particular to a crucible tongs. Background Art
[0002] In chemistry and chemical engineering experimental teaching and scientific research, there are many experiments that need to be calcined in a high-temperature furnace, such as the determination of fixed carbon, volatile matter, ash and moisture of carbon sources. Most of the vessels for high-temperature calcination are porcelain crucibles with lids or corundum crucibles. Most of these crucibles are barrel structures that are wide at the top and narrow at the bottom. In order to reduce human errors in experiments, crucible tongs are usually used to place and remove crucibles. In the process of clamping the crucible with common crucible tongs, it is easy to have the radial contact point between the crucible tongs and the outer wall of the crucible be axially tilted, the friction between the crucible tongs is insufficient and the crucible tongs slip, the crucible tipping due to improper clamping, the crucible cover falling off, and the auxiliary materials that increase friction melting and burning. It is impossible to ensure stable transfer, which leads to the breakage of the crucible, bringing unnecessary impacts to experimental teaching and scientific research. Utility Model Content
[0003] In order to solve the above problems, the utility model discloses a crucible tongs.
[0004] The specific technical solutions are as follows:
[0005] A crucible tongs is provided with a bracket, which is in the shape of a rectangular frame. A limiting bin is provided at one end of the bracket, a slide plate is provided in the limiting bin, a fixed plate is provided below the slide plate, the slide plate is plugged into the positioning bin and connected with the bracket, a pull plate is fixed at one end of the slide plate, an arc clip is provided at the other end of the slide plate; an arc clip is also provided at the lower end of the fixed plate.
[0006] A slide groove is arranged in the pull plate, and a spring is arranged in the slide groove, and two ends of the spring are respectively in contact with the slide groove and the inner wall of the bracket.
[0007] The front end of the slide plate is bent 90 degrees to form a slide column, and the slide column is vertically arranged to the slide plate.
[0008] The end of the fixed plate is divided into three equal parts: a pressing sheet and a fixed column. The left and right sides of the fixed column are pressing sheets. The fixed column is bent 90° and is vertically arranged with the fixed plate, and a notch is formed at the end of the fixed plate. The thickness of the notch is consistent with the thickness of the sliding column.
[0009] The end of the bracket is connected to the handle.
[0010] The utility model has the advantages that when the crucible is removed, the crucible clamp moves down when the arc clamp on the fixed plate approaches the crucible, a pair of pressing sheets are placed on the surface of the crucible cover to restrain the crucible and the crucible cover to prevent tipping and falling, the pulling plate is pulled, the pulling plate drives the slide plate to move, the slide plate and the pair of arc clamps on the fixed plate clamp the outer wall of the crucible, the stability of the removed crucible is ensured under the joint action of the arc clamp and the pressing sheet, when the crucible is released, the compressed spring rebounds to drive the slide plate to move back, the arc clamp automatically releases the crucible, and the contact point when the crucible is removed is avoided to avoid the phenomenon of axis tilting, slipping, tipping, falling off of the crucible cover, melting and burning of auxiliary materials that increase friction, etc., and the use is convenient for experimental operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0012] Figure 2 is a schematic diagram of the structure of a skateboard;
[0013] Figure 3 It is the structural schematic diagram of the fixed plate;
[0014] Figure 4 It is the structural schematic diagram of the pull plate;
[0015] Figure 5 is a schematic diagram of the structure of the bracket;
[0016] Figure 6 This is a schematic diagram of the state of the utility model when in use. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] A crucible tongs, see Figure 1 , which is composed of a bracket 5, a slide plate 2, a fixed plate 3, a limit bin 1, an arc clamp 4, a pull plate 6, a spring 8 and a handle 7. The openings of the pair of arc clamps 4 are welded to the vertical surfaces of the lower ends of the slide column 9 and the fixed column 10 respectively, the slide plate 2 is placed on the upper side and the fixed plate 3 is placed on the lower side in the limit bin 1, the slide plate 2 passes through the slide plate hole 13 on the bracket 5, the fixed plate 3 and the limit bin 1 are welded to the bracket 5 in sequence, the pull plate 6 is welded to the end of the slide plate 2, the handle 7 fixed with a pair of springs 8 is welded to the open end of the bracket 5, and the movable end of the spring 8 is placed in the slide groove 12 on the pull plate 6.
[0019] The cross section of the slide plate 2 is rectangular. Figure 2After the board surface is extended to a certain length, the board surface width a is correspondingly narrowed to b. After the narrowed board surface is extended to a certain length again, it is bent 90 degrees perpendicular to the board surface to form a sliding column 9. The thickness of the sliding plate is m.
[0020] The fixed plate 3 has a rectangular cross section. Figure 3 After the plate surface is extended to a certain length, it is divided into three parts with equal widths on both sides. The width of the middle surface is equal to the width b after the slide surface is narrowed, and it is bent 90 degrees perpendicular to the plate surface to form a fixed column 10. The remaining two side plates are pressing sheets 11. The length of the pressing sheet 11 is 1 / 2 of the distance between a pair of arc clips 4 when the crucible tongs are not in use. The fixed plate width is a and the thickness is n.
[0021] The limit bin 1 is a rectangular tube, the inner width of the tube is consistent with the width a of the slide plate 2 and the fixed plate 3, the height is the sum of the thickness m of the slide plate 2 and the thickness n of the fixed plate 3, and the length of the limit bin 1 is equal to the length of the surface of the fixed plate 3 with a width a.
[0022] The support 5 is in the shape of a frame with one side open. Figure 5 A slide plate hole 13 is opened at the middle and upper part of the opening relative to the vertical surface. The width and height of the slide plate hole 13 are respectively equal to the wide surface width a and thickness m of the slide plate 2. The open end is used for welding the handle 7.
[0023] The pull plate 6 is a rectangular parallelepiped. Figure 4 Two parallel slide grooves 12 are processed on both sides of the center line in the long direction of the plate, and the slide grooves 12 are used to limit the movement of the spring 8.
[0024] The arc clips 4 are arc-shaped, arranged in pairs, and used for contacting the outer wall of the crucible.
[0025] The working principle of the utility model is as follows: when removing the crucible, hold the handle 7 with one hand, and when the arc clamp 4 on the fixed plate 3 is close to the crucible, the crucible clamp moves down, and a pair of pressing sheets 11 are placed on the surface of the crucible cover, and the pressing sheets 11 are pressed down to bind the crucible and the crucible cover, and the pulling plate 6 is pulled to move, and the slide plate 2 is driven to move in the direction of the handle 7, and the spring 8 is compressed at the same time, and the slide plate 2 and the pair of arc clamps 4 on the fixed plate 3 clamp the outer wall of the crucible, and the removed crucible is fixed under the joint action of the arc clamp 4 and the pressing sheet 11, and the crucible is moved to a designated location, and the pulling force on the pulling plate 6 is slowly reduced, and the compressed spring 8 rebounds, driving the slide plate 2 to move back, and the arc clamp 4 automatically releases the crucible, so as to avoid the phenomenon that the contact point is the axis tilting, slipping, dumping, the crucible cover falls off, and the auxiliary materials that increase the friction force melt and burn, etc. when the crucible is removed, thereby ensuring the safety of the experiment.
Claims
1. A crucible tongs, characterized in that: A bracket is provided, which is in the shape of a rectangular frame, a limiting bin is provided at one end of the bracket, a slide plate is provided in the limiting bin, a fixed plate is provided below the slide plate, the slide plate is inserted into the positioning bin and connected with the bracket, a pull plate is fixed at one end of the slide plate, and an arc clip is provided at the other end of the slide plate; an arc clip is also provided at the lower end of the fixed plate.
2. The crucible tongs according to claim 1, characterized in that: A slide groove is arranged in the pull plate, a spring is arranged in the slide groove, and two ends of the spring are respectively in contact with the slide groove and the handle.
3. The crucible tongs according to claim 1, characterized in that: The front end of the slide plate is bent 90 degrees to form a slide column, and the slide column is vertically arranged to the slide plate.
4. The crucible tongs according to claim 3, characterized in that: The end of the fixed plate is divided into three equal parts: a pressing sheet and a fixed column. The left and right sides of the fixed column are pressing sheets. The fixed column is bent 90° and is vertically arranged with the fixed plate, and a notch is formed at the end of the fixed plate. The thickness of the notch is consistent with the thickness of the sliding column.
5. The crucible tongs according to claim 4, characterized in that: The end of the bracket is connected to the handle.