JPS6126308Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to an unloading device used for carrying processed products into and out of a heat treatment furnace.

Conventionally, in order to transport heat-treated products into and out of a heat treatment furnace, it was necessary to enter the furnace and remove the wire rope wrapped around the processed product, or to wrap the wire rope around the processed product. However, the inside of the furnace is small and the temperature is high due to residual heat from heat treatment, making it difficult to work, and there is a risk of burns. Since the inside of the furnace must be cooled before the next heat treatment, it takes a lot of time to carry it in and out, making it impossible to increase the throughput. There are various disadvantages such as extra time and fuel required to raise the temperature, resulting in high cost, and there is a strong need to develop a lifting and unloading device that can accurately and easily grasp the processed product even in a narrow furnace. It was requested.

The present invention was completed with the aim of providing a lifting and unloading apparatus that met the above-mentioned demands, and the illustrated embodiment will be described in detail below.

Reference numeral 1 denotes a guide girder rod made by integrating two metal plates with a spacer 2 interposed between them. Slide fittings 3, 3 are slidably attached to both ends of the guide girder rod 1. Hook rods 4, 4 having a U-shaped cross section are pivotally mounted on the bifurcated brackets 3', 3' of the slide fittings 3, 3. Reference numeral 5 denotes a hook pawl formed at the lower end of each hook rod 4. A hook pawl 5 is formed at the lower end of the hook rod 4, 4 in the vicinity of the hook pawl 5, 5, and is located inward from the pivot point at the upper end of each hook rod 4. Receiving rollers 7, 7 provided on the slide fitting 3 so as to be positioned
Both ends of a suspension string 6 whose intermediate portion is guided are connected to each other. Reference numeral 9 denotes a stopper pin that is removably inserted into the brackets 3', 3' of the slide fittings 3, 3, and the stopper pins 9, 9 are inserted into the brackets 3', 3' when the hook rods 4, 4 are lowered into the heat treatment furnace. This is to prevent pivoting of the hook rods 4, 4, and 10 is a hanging ring portion at the center of the hanging string 6.

With this structure, both stopper pins 9 must be inserted into the brackets 3', 3' of the slide fittings 3 in order to take out the heat-treated product placed in the furnace via the spacer. By making it possible to prevent the pivoting of the hook rods 4, 4, and removing both the stopper pins 9 after lowering both the hook rods 4 into the furnace, the lower portions of both the hook rods 4 are connected to the suspension strings 6. Since both ends are connected, both hook rods 4 are pivoted inwardly, and the hook claws 5 are hooked to the lower surface of the workpiece roll as shown by chain lines in FIG. Therefore, when the hanging string 6 is pulled up, the middle part of the hanging string 6 is positioned inside the pivot point of both the hook rods 4 and is guided by the receiving rollers 7 provided on both the slide fittings 3. Due to the weight of the processed product, both slide fittings 3 were not inserted into the guide girder rod 1.
is slid toward the center of the guide girder rod 1, and as shown in Fig. 3, both hook rods 4 are in contact with the sides of the product roll, and the hanging string 6 is in contact with the upper edge of the product roll. Therefore, the processed product RO is not only hung on both hook rods 4 but also tightened by the hanging string 6 to prevent the processed product RO from falling. All you have to do is carry it out to the processing area, place it in the designated place, and remove both the hook rods 4 from the processing product compartment.Also, when carrying it in, you can carry it in in the opposite direction to the above. This can be done accurately and easily without requiring the operator to enter the furnace. That is, slide fittings 3, 3 are slidably attached to both end portions of the guide girder rod 1, both hook rods 4 are pivotally connected to each slide fitting 3, and intermediate portions are attached to the lower portions of both hook rods 4. Since both ends of the suspension string 6 guided by both receiving rollers 7 are connected, both hook rods 4 hang the processed product by pivoting inward from the vertical position. If there is enough space between the furnace wall and the processed product to insert the hook rod 4, the processed product can be hung and carried in and out easily. However, there is also the advantage that processed products can be taken in and out quickly, there is no needless cooling of the inside of the furnace, heat loss is reduced, and fuel costs can be saved and work time can be shortened. Moreover, the treated product has 4 hooks on both sides.
Because it is not only hung by the handles, but also held properly by the inner surfaces of both hook rods 4 and the hanging strings 6,
There are various advantages such as the fact that the processed products do not fall.

Therefore, the present invention has the advantage that it can be provided at a low cost with a simple structure as a lifting and unloading device that is convenient for transporting processed products into and out of a heat treatment furnace, and together with this, it has extremely great practical value.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, FIG. 2 is a partially cutaway side view, and FIG. 3 is a front view showing a different state. 1... Guide girder rod, 3... Slide metal fitting, 4...
Hook rod, 6... Hanging string, 7... Receiving roller, 9...
…Stotupapin.

Claims (1)

[Scope of utility model registration request] Slide fittings 3, 3 are slidably attached to both end portions of the guide girder rod 1, and hook rods 4, 4 are pivotally suspended from the slide fittings 3, 3. Stopper pin 9 that can prevent pivoting of
The slide fittings 3,
3 is provided with receiving rollers 7, 7 located inside the pivot points of the hooks 4, 4, and furthermore, at the lower part of the hook rods 4, 4, the intermediate portion is guided to the receiving rollers 7, 7. This lifting and unloading device is characterized in that both ends of a suspended string 6 are connected.