Crucible fork device

Abstract

The utility model discloses a kind of crucible fork device, it is related to fire analysis field, specifically includes: handle, fork rod, fork plate and support, the handle is provided with lock and transmission box, the fork rod one end connects handle, the other end connects fork plate, fork rod is set on support.The utility model uses simple mechanical structure, firm high temperature resistance, cost is lower, heat radiation effect is good, it is laborsaving to operate, flexible and convenient, furnace speed is fast, efficiency is high, can be well adhered to crucible outer wall, enhance stability, fork takes crucible more firm, when pouring, turning operation is carried out, effectively prevent crucible from slipping, guarantee test quality, improve safety.

Description

Technical Field

[0001] This utility model relates to the field of fire test analysis, specifically a crucible fork device. Background Technology

[0002] In the field of non-ferrous metal analysis, the fire test method is often used, employing clay crucibles for high-temperature smelting. After smelting, crucible tongs are needed to remove the crucible and pour the molten material into a mold. Crucible tongs are commonly used for this operation. However, existing crucible tongs use a single-jaw gripper, with the gripping force dependent on manual control. Only one crucible can be gripped per batch, and each operation takes 30-60 seconds. The discharge temperature is typically between 950 and 1050°C. Operators are easily burned by the hot air while gripping the crucible, and the efficiency of gripping a single crucible is low. The high furnace temperature and long heat radiation time, coupled with the lengthy sample removal process, all negatively impact analytical quality. Furthermore, the clay crucibles and the material are relatively heavy, making ordinary crucible tongs laborious to operate. The dimensions of crucibles vary between batches, leading to unstable gripping and a tendency for slippage when pouring molten samples, posing safety hazards to operators or resulting in unsatisfactory pouring results, thus affecting quality. Utility Model Content

[0003] The purpose of this utility model is to provide a crucible fork device that overcomes the shortcomings of the prior art. It effectively solves the existing problems of safety hazards for operators, low efficiency, and poor quality.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A crucible fork device includes a handle, a fork rod, a fork plate, and a support. The handle is fixedly connected to a transmission box, which contains a gear transmission device and a counterweight. The handle is equipped with a locking device that is linked to the transmission device. The fork rod is a hollow tubular structure, with one end fixedly connected to the transmission box and the other end perpendicularly connected to the fork plate. A steel wire rope passes through the fork rod. The support has an adjustable height open V-shaped limiting groove, with a roller at the bottom of the limiting groove. The fork rod is slidably connected to the roller. The fork plate has at least one open semi-circular crucible slot, with a corresponding locking hook at the slot. The locking hook passes through the fork plate and is equipped with a limiting ring. A spring is provided on the other side of the locking hook, and the locking hook is connected to the transmission device via a steel wire rope.

[0006] Furthermore, the fork is 1.5-2m long, and the internal steel wire rope is made of high-temperature resistant stainless steel.

[0007] Furthermore, the bottom of the bracket is equipped with four casters with foot-locking mechanisms.

[0008] Furthermore, the locking device is a rotary knob that controls the gear transmission device by twisting the angle (0-90°) to tighten or loosen the wire rope, thereby driving the locking hook to lift or fall. The hook stroke is 5-10cm.

[0009] Furthermore, the fork plate is provided with 5 crucible slots, the diameter of which is 8-12cm and the distance between adjacent slots is 5-8cm, and the locking hooks correspond one-to-one with the slots.

[0010] Furthermore, the spring is a high-temperature resistant compression spring, which keeps the locking hook in a locked state under natural conditions, with a compression stroke of 3-5cm.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] Employing a simple mechanical structure, it is robust, heat-resistant, and cost-effective. The fork length is no less than 1.5m, maintaining a sufficient safe distance from the furnace body, providing excellent protection against burns and heat radiation. Utilizing the lever principle, operators can easily lift heavier crucibles by using the support as a fulcrum and counterweight. Limiting grooves and rollers on the support allow for flexible and convenient operation of the crucible fork, including extension, rotation, and tilting. The design of five connected crucible slots ensures fast and efficient crucible removal. The open, semi-circular crucible slots on the fork plate fit snugly against the crucible's outer wall, enhancing stability. A locking device ensures a secure grip on the crucible and effectively prevents slippage during tilting and flipping operations, guaranteeing experimental quality and improving safety. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention;

[0014] Figure 2 for Figure 1 A magnified view of part A;

[0015] Figure 3 for Figure 1 A magnified view of part B.

[0016] In the diagram: 1. Locking device; 2. Handle; 3. Transmission box; 4. Fork; 5. Fork plate; 6. Bracket; 7. Locking hook; 8. Limiting ring; 9. Spring; 10. Limiting groove; 11. Roller. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Examples of embodiments of this utility model Figure 1 , Figure 2 and Figure 3 As shown.

[0019] A crucible fork device includes: a handle 2, a fork 4, a fork plate 5, and a bracket 6. The handle 2 is provided with a locking device 1 and a transmission box 3. One end of the fork 4 is connected to the handle 2, and the other end is connected to the fork plate 5. The fork 4 is mounted on the bracket 6.

[0020] The length of the fork 4 is 1.5-2m, maintaining a sufficient safe distance from the furnace body to effectively prevent burns and heat radiation. The fork 4 has a hollow tubular structure, which reduces the overall weight and provides a channel for the internal steel wire rope. The internal steel wire rope is made of high-temperature resistant stainless steel and can be used stably for a long time in working environments of 950-1050℃.

[0021] The support frame 6 has four casters with foot-locking mechanisms at its bottom. Operators can switch between fixing and moving the support frame 6 by stepping on the foot-locking mechanisms next to the casters. The support frame 6 has an open V-shaped height-adjustable limiting groove 10. During adjustment, rotating the height adjustment knobs on both sides of the limiting groove 10 moves it up and down along the support frame 6 column to the appropriate position and then locks it, ensuring the fork 4 is at the optimal operating height. A rotatable roller 11 is located at the bottom of the limiting groove 10. The fork 4 is slidably connected to the roller 11. The sliding contact between the roller 11 and the fork 4 significantly reduces friction, making the extension, rotation, and tilting operations of the fork 4 more flexible and convenient. Simultaneously, the support frame 6, as the movable support point of the fork 4, in conjunction with the counterweight in the transmission box 3, utilizes the lever principle to assist the operator in moving the crucible effortlessly.

[0022] The fork plate 5 has five open, semi-circular crucible slots, each with a diameter of 8-12 cm and a spacing of 5-8 cm between adjacent slots, accommodating clay crucibles of different sizes. This fixed, clamp-like slot design ensures a tight fit against the crucible's outer wall, providing a stable space and enhancing stability during forklift handling. The five connected slots allow for batch handling of five crucibles at a time, significantly improving unloading speed and work efficiency.

[0023] Each crucible slot on the fork plate 5 is provided with a locking hook 7. The locking hook 7 passes vertically through the plane of the fork plate 5. A limiting ring 8 is provided on one side (to prevent the locking hook from falling excessively), and a high-temperature resistant compression spring 9 is provided on the other side. It is connected to the gear transmission device in the transmission box 3 through a steel wire rope passing through the fork rod 4.

[0024] The locking device 1 is a rotary knob that controls the gear transmission device by rotating it from 0 to 90 degrees, thereby tightening or loosening the wire rope and raising or lowering the locking hook 7. During tilting or flipping operations, the locking hook 7 can firmly hold the upper edge of the crucible, effectively preventing the crucible from slipping and ensuring the quality of the test and operational safety.

[0025] In actual use, the operating steps are as follows:

[0026] Preparation: Push the bracket 6 to the vicinity of the furnace body and step on the foot locking mechanism of the caster wheel to fix the bracket; adjust the height of the upper limit groove 10 of the bracket according to the height of the furnace opening so that the fork 4 is in a horizontal position that is easy to operate.

[0027] Forking crucibles: The operator holds the handle 2 and places the fork 4 on the roller 11 at the bottom of the bracket limiting groove 10. The operator pushes the handle to slowly extend the fork plate 5 into the furnace. The operator aligns the crucible slot on the side opening of the fork plate 5 with the crucible to be taken out and inserts it horizontally under the crucible to ensure that each crucible is stably placed in the corresponding slot.

[0028] Locking the crucible: Rotate the locking device 1 clockwise (twist angle 30-60°) to tighten the steel wire rope through the gear transmission device, overcome the elastic force of the spring 9 to raise the locking hook 7 and then lower it until the locking hook is locked on the upper edge of the crucible; observe the position of the limit ring 8 to confirm that the locking hook has been reliably locked.

[0029] Transferring the crucible: Hold the handle 2 and pull back the fork 4. Use the rolling of the roller 11 to reduce friction. At the same time, use the supporting force of the bracket 6 and the balancing effect of the counterweight in the transmission box 3 to move the crucible out of the heating chamber with little effort. During the transfer, the direction of the fork 4 can be flexibly adjusted by adjusting the handle angle and using the rotation of the roller 11.

[0030] Pouring materials: After moving the crucible above the mold, adjust the tilt angle of the crucible by rotating the handle 2 and sliding the fork 4 on the roller 11; during the pouring process, the locking hook 7 is kept locked under the continuous elastic force of the spring 9 to prevent the crucible from slipping; after pouring is completed, slowly return the fork 4 to the horizontal position.

[0031] Unlocking and Resetting: Rotate the locking device 1 counterclockwise (twist angle back to 0°), the wire rope loosens, the spring 9 returns to its natural state and pushes the locking hook 7 to lift, releasing the lock on the crucible; pull the fork plate 5 out from under the crucible, and reset the device after completing the operation.

[0032] The above operation process makes full use of the mechanical structure advantages of this utility model. Its simple and robust design not only has good high temperature resistance and reduces equipment costs, but also effectively solves the problems of safety hazards, low efficiency and unstable quality in traditional crucible tong operation through batch operation, labor-saving design and safety locking mechanism.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crucible fork device, characterized in that, It includes a handle (2), a fork (4), a fork plate (5), and a bracket (6); the handle (2) is fixedly connected to a transmission box (3), which contains a gear transmission device and a counterweight, and the handle (2) is equipped with a locking device (1) that is linked to the transmission device; the fork (4) is a hollow tubular structure, one end of which is fixedly connected to the transmission box (3), and the other end is perpendicularly connected to the fork plate (5), and a steel wire rope is threaded through the fork (4); the bracket (6) is equipped with... An open V-shaped limiting groove (10) with adjustable height is provided. A roller (11) is provided at the bottom of the limiting groove (10). The fork (4) is slidably connected to the roller (11). At least one open semi-circular crucible slot is provided on the fork plate (5). A locking hook (7) is provided at the corresponding slot. The locking hook (7) passes through the fork plate (5) and is provided with a limiting ring (8). A spring (9) is provided on the other side of the locking hook (7). The locking hook (7) is connected to the transmission device through a steel wire rope.

2. The crucible fork device according to claim 1, characterized in that, The fork (4) is 1.5-2m long and the internal steel wire rope is made of high-temperature resistant stainless steel.

3. The crucible fork device according to claim 1, characterized in that, The bracket (6) has four casters with foot-locking mechanisms at its bottom.

4. The crucible fork device according to claim 1, characterized in that, The locking device (1) is a rotary knob that controls the gear transmission device by twisting the angle (0-90°) to tighten or loosen the wire rope, thereby driving the locking hook to lift or fall. The hook stroke is 5-10cm.

5. The crucible fork device according to claim 1, characterized in that, The fork plate (5) is provided with 5 crucible slots, the diameter of which is 8-12cm and the distance between adjacent slots is 5-8cm. The locking hooks correspond one-to-one with the slots.

6. The crucible fork device according to claim 1, characterized in that, The spring (9) is a high-temperature resistant compression spring, which keeps the locking hook in a locked state under natural conditions, with a compression stroke of 3-5cm.

7. The crucible fork device according to claim 1, characterized in that, The counterweight is made of tungsten steel and weighs 500-800g. It is fixed on the side of the transmission box away from the fork and forms a torque balance with the fork plate.

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