CN220115708U - Self-unhooking self-unloading box with open lower opening and lifting appliance thereof - Google Patents

Abstract

The utility model belongs to the technical field of self-unloading boxes, and discloses a self-unhooking lower opening self-unloading box which comprises a heavy box hanging point, an empty box hanging point, a lower turning plate, a ridged bottom board, a bottom plate and side plates, wherein a hollow box body with an open top and airtight periphery can be formed among the bottom plate, the lower turning plate and the side plates; the ridged bottom plate is arranged on the upper surface of the bottom plate in the hollow box body, and the longitudinal section of the ridged bottom plate is arranged in an inverted cone shape; the heavy box hanging point is connected to the lower turning plate, and the empty box hanging point is connected to the outer side of the side plate right above the heavy box hanging point. The self-discharging box is firm and durable, can be used for picking and hooking by two persons, is simple and convenient to operate, reduces the labor cost of operation, and is suitable for outdoor open-air and in-warehouse working environments such as ports with strict environmental protection requirements for bulk cargo operation.

Description

Self-unhooking self-unloading box with open lower opening and lifting appliance thereof

Technical Field

The utility model belongs to the technical field of self-unloading boxes, and particularly relates to a self-unhooking self-unloading box with an open bottom and a lifting appliance thereof.

Background

A portal crane (hereinafter referred to as a portal crane) is an important port loading and unloading production facility. The grab bucket type and hook head type working conditions are adopted. Aiming at the existing four-rope door machine with the door machine of 25t/16t, namely the rated load of a hook head mode of the four-rope door machine is 25t (four steel wire ropes can only ascend and descend at the same time), the rated load of a grab bucket mode is 16t (2 of the four steel wire ropes are supporting ropes, 2 of the four steel wire ropes are opening and closing ropes, and the supporting ropes and the opening and closing ropes can move relatively, so that the opening and closing actions of the grab bucket are realized). At present, when the existing container bucket or side-turning self-discharging box is used for shipping, a door machine supporting rope needs to be kept motionless, an opening and closing rope descends so as to achieve the action of side-turning and dumping goods, and only a grab bucket mode with the rated load of 16t can be used, the dead weight of the container bucket or side-turning self-discharging box is removed by single-hook goods, and the single-hook goods are loaded for about 12t. This results in lower tonnage per hook, lower shipping efficiency and higher energy consumption per ton.

Thus, the prior art fails to meet the needs of use, and there is a need for one or more related new devices.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a self-unhooking self-discharging box with an open lower opening and a lifting appliance thereof.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the self-unhooking open-bottom self-unloading box comprises a heavy box hanging point, an empty box hanging point, a lower turning plate, a ridged bottom board, a bottom plate and side plates, wherein the bottom plate and the lower turning plate are arranged along the horizontal direction, the lower turning plate is symmetrically arranged along the horizontal direction, the side plates are arranged along the vertical direction, the longitudinal two sides of the bottom plate are connected with the bottom of the side plates, the horizontal two sides of the bottom plate are movably hinged with one horizontal side of the lower turning plate, the lower turning plate can swing up and down along the horizontal direction, and the horizontal other end of the lower turning plate can be detachably connected with the bottom lower surface of the side plate; when the lower turning plate is arranged in the horizontal direction and the horizontal other end of the lower turning plate is connected with the lower surface of the bottom of the side plate, the lower turning plate covers the bottom of the side plate, a hollow box body with an opening at the top and airtight periphery can be formed among the bottom plate, the lower turning plate and the side plate, the hollow box body can contain goods to be transported, when the lower turning plate is obliquely arranged and the horizontal other end of the lower turning plate is not connected with the lower surface of the bottom of the side plate, a hollow channel is formed between the horizontal other side of the lower turning plate and the bottom of the side plate, and the goods to be transported on the ridged bottom plate can be output from the hollow channel;

the ridged bottom plate is arranged along the vertical direction and is arranged on the upper surface of the bottom plate in the hollow box body, and the longitudinal section of the ridged bottom plate is arranged in an inverted cone shape; the bottoms of the two horizontal sides of the ridged bottom plate are fixedly arranged on the upper surfaces of the two horizontal ends of the bottom plate, and the bottoms of the two longitudinal sides of the ridged bottom plate are connected with the side plates;

the heavy box hanging point is connected to the lower turning plate and is arranged on the outer end face of the lower turning plate far away from the bottom plate, and the empty box hanging point is connected to the outer side of the side plate right above the heavy box hanging point.

Further, the horizontal two sides of the bottom plate are movably hinged with one horizontal end of the lower turning plate through a through shaft.

Further, the self-discharging box further comprises a fork warehouse, the fork warehouse is arranged on the outer side of the bottom of the box body, and the center distance of the fork warehouse is 2200mm.

Further, the side plates and the ridged bottom plates are made of high-strength materials; or, the number of the heavy box hanging points is 4, and the number of the empty box hanging points is 4.

Further, heavy case hoisting point is including connecting the connecting portion and lug portion that set up, connecting portion along vertical direction setting, this connecting portion adorn down on turning over the board admittedly, lug portion sets up along the horizontal direction slope, and this lug portion can hang the dress setting with the short-chain branch circle rings of hoist.

Further, the height of the connecting part is 150mm, and the included angle between the hanging lug part and the horizontal plane is 60 degrees.

Further, the empty box hanging point comprises an empty box connecting portion, an empty box hanging lug portion and an anti-falling portion, the empty box hanging lug portion is arranged in the horizontal direction, the empty box connecting portion and the anti-falling portion are arranged in the vertical direction, the empty box connecting portion and the anti-falling portion are coaxially connected to be arranged at the two horizontal ends of the empty box hanging lug portion respectively, the empty box connecting portion is fixedly arranged on a side plate of the box body, the empty box hanging lug portion can be hung with a circular ring of the lifting appliance, and the diameter of the anti-falling portion in the vertical direction is larger than that of the empty box connecting portion in the vertical direction.

Further, the empty box hanging lug part is of a cylinder structure, and the size of the cylinder is as follows: diameter 90mm, height 60mm; the material of empty case connecting portion and anticreep portion is circular band iron, and the size of this empty case connecting portion is: diameter 150mm, thickness 5mm, this anti-disengaging portion's size is: 200mm and 6mm thick. When the special self-unhooking lifting appliance for the open self-unloading box is used for shipping, the end part ring of the long limb lifting chain is hung on the empty box lifting lug, and when the heavy box is operated, the short limb heavy box lifting chain is stressed firstly for heavy box operation because of longer lifting chain; when the self-unloading box is unloaded in the cabin, the heavy box short limb round hanging ring automatically drops, and the long limb empty box hanging chain round ring is still positioned on the hanging point; when the crane lifts, the short-limb hanging chain ring does not hang the lifting hook at the lifting point of the heavy box, the lower turning plate is opened, the long-limb hanging chain ring is stressed to lift the self-unloading box, and the empty box is lifted to the wharf after the goods in the box are unloaded completely.

Further, the size of the box body is set to 5000mm×2450mm×2500mm, or the angle between the ridged floor planking and the bottom plate is set to 35 degrees, or the size of the turndown plate is set to 900mm×2500mm.

Further, vertical beams are arranged on the side plates, are arranged in the vertical direction, and are arranged in a plurality of ways; or the lower turning plate is provided with a limiting steel wire rope; or a vertical beam is arranged between the ridged bottom plate and the bottom plate; or, the ridged bottom plate is provided with reinforcing ribs.

The special lifting appliance for the self-unhooking open-bottom self-unloading box comprises a supporting beam and a lifting chain, wherein the lifting chain is connected and arranged on the supporting beam through a shackle, the lifting chain comprises a main chain, a long branched chain, a short branched chain and a round lifting ring, one ends of the long branched chain and the short branched chain are connected and arranged with one end of the main chain through the round lifting ring, the other end of the long-chain branch is connected with a long-chain branch round hanging ring, the long-chain branch round hanging ring can be detachably connected with an empty box hanging point, the other end of the short-chain branch is connected with a short-chain branch round hanging ring, the short-chain branch round hanging ring can be detachably connected with a heavy box hanging point, and the other end of the main chain is connected with a shackle through a butterfly buckle.

Further, the lifting appliance comprises 2 supporting beams and 4 pairs of hanging chains, and the supporting beams are connected with the two pairs of hanging chains.

Further, the round hanging ring, the short branched chain round hanging ring and the long branched chain round hanging ring are all 12t high-strength round hanging rings.

The utility model has the advantages and effects that:

1. the self-unloading box comprises a heavy box hanging point, an empty box hanging point, a lower turning plate, a ridged bottom board, a bottom plate and side plates, wherein the bottom plate, the lower turning plate and the side plates form a hollow box body structure with an opening at the top and a closed periphery; when the heavy box is lifted, the lifting point of the heavy box is stressed, so that the upper turning plate is tightly covered at the bottom of the side plate, thereby avoiding the goods to be transported from flowing out of the hollow box body, then the heavy box is lifted into a cabin, and after the heavy box is stably placed, the lifting appliance is unhooked from the lifting point of the heavy box; the door machine lifts, the empty box hanging point is stressed, the lower turning plate is opened downwards under the action of gravity, so that the lower turning plate is separated from the side plates to form a hollow channel, goods to be transported flow out of the hollow channel, and the goods are unloaded into the cabin; after completion, the empty box is placed on a transport vehicle. The self-discharging box is suitable for carrying out short-distance transportation, shipping and the like by using the self-discharging box to transport bulk cargoes such as ores, coal and the like in ports. The self-discharging box has high shipping efficiency and low energy consumption per ton.

In addition, the upper part of the self-discharging box is open, so that the loading machine is convenient to load; two lower turning plates are symmetrically designed at the bottom of the self-unloading box, and when the lower turning plates are opened, cargoes can be poured out of the box body for unloading; in the self-discharging case, the ridging bottom plate is designed, so that the goods in the case can be completely poured out when the lower turning plate is opened, and the accumulation in the case is reduced. The self-discharging box is firm and durable, can be used for picking and hooking by two persons, is simple and convenient to operate, reduces the labor cost of operation, and is suitable for outdoor open-air and in-warehouse working environments such as ports with strict environmental protection requirements for bulk cargo operation.

2. When bulk cargo is loaded into a self-unloading box, the bulk cargo is loaded into a ship side through a transport vehicle, when the ship side is loaded, a special lifting appliance for the open self-unloading box is used, the short-chain round lifting rings are respectively hung on a heavy box lifting point, the long-chain round lifting rings are hung on an empty box lifting point, a gantry crane (hereinafter referred to as a gantry crane) is used for lifting, the heavy box lifting point on a lower turning plate is stressed, the unloading box and the cargo are integrally lifted into a ship cabin, a gantry crane steel wire rope continues to descend, the short-chain round lifting rings connected with the heavy box lifting point continue to descend due to gravity to complete automatic unhooking, the gantry crane further carries out lifting, the lower turning plate of the self-unloading box is stressed by the gravity to automatically descend and open, and the cargo is unloaded into the ship cabin. The door machine transfers the empty box to the transport vehicle to complete a working cycle. Therefore, the large-tonnage working condition of the hook head can be used, the small-tonnage working condition of the grab bucket (the steel wire rope of the gantry crane is used for distinguishing the opening and closing rope from the supporting rope in the working condition of the grab bucket), the rated load of the existing 25-ton gantry crane is 16 tons, and the loading and unloading efficiency is greatly improved.

The special lifting appliance and the lower opening self-unloading mode are adopted, the working condition of a door machine grab bucket can be avoided, the working condition of a door machine hook head is adopted, the rated load of the door machine is fully utilized, and the loading and unloading efficiency is improved through automatic conversion of a heavy box lifting point and an empty box lifting point.

Drawings

FIG. 1 is a schematic top view of a structural connection of an open dump bin of the present utility model;

FIG. 2 is a right side schematic view of FIG. 1;

FIG. 3 is a schematic view of a structural connection of the lower flap, ridged floor, and bottom plate of FIG. 1;

fig. 4 is a schematic structural connection diagram of a lifting appliance used in cooperation with the open self-unloading case shipment of the present utility model.

Detailed Description

The utility model will now be further described in connection with specific examples which are intended to be illustrative only and not limiting in any way.

The raw materials used in the utility model are conventional commercial products unless otherwise specified, the methods used in the utility model are conventional methods in the art unless otherwise specified, and the mass of each substance used in the utility model is conventional. Structures, connection relationships, etc., not described in detail in the present utility model, may be understood as conventional means in the art.

The self-unhooking open-bottom self-unloading box comprises a heavy box lifting point 1, an empty box lifting point 2, a lower turning plate 3, a ridged bottom plate 4, a bottom plate 5 and side plates 8, wherein the bottom plate and the lower turning plate are arranged in the horizontal direction, the lower turning plate is symmetrically arranged in the horizontal direction, the side plates are arranged in the vertical direction, the longitudinal two sides of the bottom plate are connected with the bottoms of the side plates, the horizontal two sides of the bottom plate are movably hinged with one horizontal side of the lower turning plate, the lower turning plate can swing up and down in the horizontal direction, and the horizontal other end of the lower turning plate can be detachably connected with the bottom lower surface of the side plate; when the lower turning plate is arranged along the horizontal direction and the horizontal other end of the lower turning plate is connected with the lower surface of the bottom of the side plate, a hollow box body with an opening at the top and airtight periphery can be formed among the bottom plate, the lower turning plate and the side plate, the hollow box body can contain goods to be transported, when the lower turning plate is obliquely arranged and the horizontal other end of the lower turning plate is not connected with the lower surface of the bottom of the side plate, a hollow channel is formed between the horizontal other side of the lower turning plate and the bottom of the side plate, and the goods to be transported on the ridged bottom plate can be output from the hollow channel;

the ridged bottom plate is arranged along the vertical direction and is arranged on the upper surface of the bottom plate in the hollow box body, and the longitudinal section of the ridged bottom plate is arranged in an inverted cone shape; the bottoms of the two horizontal sides of the ridged bottom plate are fixedly arranged on the upper surfaces of the two horizontal ends of the bottom plate, and the bottoms of the two longitudinal sides of the ridged bottom plate are connected with the side plates;

the heavy box hanging point is connected to the lower turning plate and is arranged on the outer end face of the lower turning plate far away from the bottom plate, and the empty box hanging point is connected to the outer side of the side plate right above the heavy box hanging point.

The self-unloading box comprises a heavy box hanging point, an empty box hanging point, a lower turning plate, a ridged bottom board, a bottom plate and side plates, wherein the bottom plate, the lower turning plate and the side plates form a hollow box body structure with an opening at the top and a closed periphery; when the heavy box is lifted, the lifting point of the heavy box is stressed, so that the upper turning plate is tightly covered at the bottom of the side plate, thereby avoiding the goods to be transported from flowing out of the hollow box body, then the heavy box is lifted into a cabin, and after the heavy box is stably placed, the lifting appliance is unhooked from the lifting point of the heavy box; the door machine lifts, the empty box hanging point is stressed, the lower turning plate is opened downwards under the action of gravity, so that the lower turning plate is separated from the side plates to form a hollow channel, goods to be transported flow out of the hollow channel, and the goods are unloaded into the cabin; after completion, the empty box is placed on a transport vehicle. The self-discharging box is suitable for carrying out short-distance transportation, shipping and the like by using the self-discharging box to transport bulk cargoes such as ores, coal and the like in ports. The self-discharging box has high shipping efficiency and low energy consumption per ton.

In addition, the upper part of the self-discharging box is open, so that the loading machine is convenient to load; two lower turning plates are symmetrically designed at the bottom of the self-unloading box, and when the lower turning plates are opened, cargoes can be poured out of the box body for unloading; in the self-discharging case, the ridging bottom plate is designed, so that the goods in the case can be completely poured out when the lower turning plate is opened, and the accumulation in the case is reduced. The self-discharging box is firm and durable, can be used for picking and hooking by two persons, is simple and convenient to operate, reduces the labor cost of operation, and is suitable for outdoor open-air and in-warehouse working environments such as ports with strict environmental protection requirements for bulk cargo operation.

Preferably, the horizontal two sides of the bottom plate are movably hinged with the horizontal one end of the lower turning plate through the through shaft 6, the turning plates on the two sides are connected through the through shaft, and the use strength of the shaft is enhanced.

In this embodiment, the self-discharging box further includes a fork (not shown in the figure), and the fork is disposed at the outer side of the bottom of the box body. Preferably, the center distance of the fork warehouse is 2200mm. The self-discharging box is provided with a fork warehouse, is suitable for fork transportation of a 10t/25t forklift, is convenient for transportation of the self-discharging box, and improves the working efficiency.

In this embodiment, the side plates and the ridged bottom plates are made of high-strength materials, such as high-strength steel; or, the number of the heavy box hanging points is 4, and the number of the empty box hanging points is 4.

In this embodiment, the heavy box hoisting point includes connecting portion 301 and hanging ear portion 302 that are connected and set up, connecting portion sets up along vertical direction, and this connecting portion adorns down on turning over the board admittedly, lug portion sets up along the horizontal direction slope, and this lug portion can hang the dress setting with the short-chain branched chain circle rings of hoist.

Preferably, the height of the connecting part is 150mm, and the included angle between the hanging lug part and the horizontal plane is 60 degrees. When the special self-unhooking lifting appliance for the open self-unloading box is used for shipping, the end part ring of the short-limb lifting chain is hung on the lifting lug of the heavy box, and when the whole lifting appliance is stressed and lifted, the lower turning plate is closed because the lifting chain is stressed firstly. When the open self-unloading box is lifted to the bottom of the cabin, the lifting appliance unloads force, and the ring at the end part of the short-limb lifting chain slides off the lifting hook at the heavy-hook lifting point due to self weight, so that the self-unhooking purpose is achieved.

In this embodiment, empty box lifting point includes empty box connecting portion 201, empty box hanging lug portion 203 and anticreep portion 202, empty box hanging lug portion sets up along the horizontal direction, empty box connecting portion, anticreep portion set up along vertical direction, empty box connecting portion, anticreep portion are coaxial to be connected respectively and are set up in the horizontal both ends of empty box hanging lug portion, empty box connecting portion adorn admittedly on the curb plate of box, empty box hanging lug portion can hang the dress setting with the ring of hoist, the diameter of anticreep portion along vertical direction is greater than the diameter of empty box connecting portion along vertical direction, prevents that long-chain branch circle rings from sliding out from empty box hanging lug portion, has guaranteed the result of use.

Preferably, the empty box hanging lug part is of a cylindrical structure, and the size of the empty box hanging lug part is as follows: diameter 90mm, height 60mm; the material of empty case connecting portion and anticreep portion is circular band iron, and the size of this empty case connecting portion is: diameter 150mm, thickness 5mm, this anti-disengaging portion's size is: 200mm and 6mm thick. When the special self-unhooking lifting appliance for the open self-unloading box is used for shipping, the long-branched chain round lifting ring at the end part of the long-limb lifting chain is hung on the empty box lifting lug, and when the heavy box is operated, the short-limb heavy box lifting chain is stressed firstly for heavy box operation because of longer lifting chain; when the self-unloading box is unloaded in the cabin, the long-branched chain round hanging ring of the short limb of the heavy box automatically drops off, and the long-limb empty box hanging chain ring is still on the hanging point; when the crane lifts, the short-limb hanging chain ring does not hang the lifting hook at the lifting point of the heavy box, the lower turning plate is opened, the long-limb hanging chain ring is stressed to lift the self-unloading box, and the empty box is lifted to the wharf after the goods in the box are unloaded completely.

In this embodiment, the dimensions of the box are set to 5000mm×2450mm×2500mm, or the angle between the ridged floor deck and the bottom plate is set to 35 degrees, or the dimension of the down-turned plate is set to 900mm×2500mm. The size of the self-discharging box body can be adjusted according to the load of the lifting equipment and the size of the transporting vehicle, and the ridging angle in the box body is manufactured according to the 35-degree self-flowing angle, so that the goods in the box can flow cleanly, and the self-discharging box is suitable for bulk cargo transporting operation.

In the embodiment, the vertical beams 9 are arranged on the side plates and are arranged along the vertical direction, and the vertical beams are arranged in a plurality, so that the stability of the side plates is improved, the firmness is better, the stability is higher, and the service life is prolonged; or a limit steel wire rope (not shown in the figure) is arranged between the lower turning plate and the side plate of the box body, the steel wire rope is used for connection and fixation, when the special self-unhooking lifting appliance short-limb lifting chain round lifting ring for the open self-unloading box is separated from the heavy-hook lifting point lifting hook and the empty box lifting point is stressed to lift, the lower turning plate is opened, and the limit steel wire rope is straightened and stressed, so that the aim that the hinge point of the lower turning plate does not bear the dead weight of the whole lower turning plate is achieved; or, the vertical beam 7 is arranged between the ridged bottom plate and the bottom plate, so that the connection stability between the ridged bottom plate and the bottom plate is improved, the firmness is better, the stability is higher, and the service life is prolonged; or, be provided with strengthening rib 10 on the ridged bottom bed board, whole reinforcement is consolidated, and the whole load of box is effectual, and the durability is strong, and is durable not fragile.

The special lifting appliance for the self-unhooking open-bottom self-unloading box comprises a supporting beam (not shown in the figure) and a lifting chain, wherein the lifting chain is connected and arranged on the supporting beam through a shackle 101, the lifting chain comprises a main chain 103, a long-chain branched chain 107, a short-chain branched chain 105 and a round lifting ring 104, one ends of the long-chain branched chain and the short-chain branched chain are connected and arranged with one end of the main chain through the round lifting ring, the other end of long-chain branch is connected and is provided with long-chain branch rings 108, long-chain branch rings can be connected with the setting of dismantling of empty box hoisting point, the other end of short-chain branch is connected and is provided with short-chain branch rings 106, short-chain branch rings can be connected with the setting of dismantling of heavy box hoisting point, the other end of backbone is connected with the setting of breaking out through butterfly buckle 102.

When bulk cargo is loaded into a self-unloading box, the bulk cargo is loaded into a ship side through a transport vehicle, when the ship side is loaded, a special lifting appliance for the open self-unloading box is used, the short-chain round lifting rings are respectively hung on a heavy box lifting point, the long-chain round lifting rings are hung on an empty box lifting point, a gantry crane (hereinafter referred to as a gantry crane) is used for lifting, the heavy box lifting point on a lower turning plate is stressed, the unloading box and the cargo are integrally lifted into a ship cabin, a gantry crane steel wire rope continues to descend, the short-chain round lifting rings connected with the heavy box lifting point continue to descend due to gravity to complete automatic unhooking, the gantry crane further carries out lifting, the lower turning plate of the self-unloading box is stressed by the gravity to automatically descend and open, and the cargo is unloaded into the ship cabin. The door machine transfers the empty box to the transport vehicle to complete a working cycle. Therefore, the large-tonnage working condition of the hook head can be used, the small-tonnage working condition of the grab bucket (the steel wire rope of the gantry crane is used for distinguishing the opening and closing rope from the supporting rope in the working condition of the grab bucket), the rated load of the existing 25-ton gantry crane is 16 tons, and the loading and unloading efficiency is greatly improved.

The special lifting appliance and the lower opening self-unloading mode are adopted, the working condition of a door machine grab bucket can be avoided, the working condition of a door machine hook head is adopted, the rated load of the door machine is fully utilized, and the loading and unloading efficiency is improved through automatic conversion of a heavy box lifting point and an empty box lifting point.

In this embodiment, the lifting appliance includes 2 supporting beams and 4 pairs of hanging chains, and the supporting beams are connected with the two pairs of hanging chains. Preferably, the round hanging ring, the short branched chain round hanging ring and the long branched chain round hanging ring are all 12t high-strength round hanging rings.

The self-unhooking self-unloading box with the open lower opening adopts the design of self-unhooking tools and fully utilizes the single-machine load of the gantry crane. Taking a 25/16t portal crane as an example, the tonnage of operation of a side-opening single box is only 10t, and the tonnage of operation of opening single box under new research and development is about 18t, so that the tonnage of goods for each box is increased, the loading and unloading efficiency is improved by about 80%, and the requirement of bulk cargo loading of a company can be met. Meanwhile, the height of the box body is 2.5m, bulk cargo is not easy to spill and leak during the process of transporting, and the environment-friendly requirement is met.

Although embodiments of the present utility model have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments.

Claims (10)

1. The utility model provides a but self-unhook's open self-discharging case of lower opening which characterized in that: the self-discharging box comprises a heavy box hanging point, an empty box hanging point, a lower turning plate, a ridged bottom board, a bottom plate and side plates, wherein the bottom plate and the lower turning plate are arranged in the horizontal direction, the lower turning plate is symmetrically arranged in the horizontal direction, the side plates are arranged in the vertical direction, the longitudinal two sides of the bottom plate are connected with the bottoms of the side plates, the horizontal two sides of the bottom plate are movably hinged with one horizontal side of the lower turning plate, the lower turning plate can swing up and down in the horizontal direction, and the horizontal other end of the lower turning plate can be detachably connected with the bottom lower surface of the side plate; when the lower turning plate is arranged along the horizontal direction and the horizontal other end of the lower turning plate is connected with the lower surface of the bottom of the side plate, a hollow box body with an opening at the top and airtight periphery can be formed among the bottom plate, the lower turning plate and the side plate, the hollow box body can contain goods to be transported, when the lower turning plate is obliquely arranged and the horizontal other end of the lower turning plate is not connected with the lower surface of the bottom of the side plate, a hollow channel is formed between the horizontal other side of the lower turning plate and the bottom of the side plate, and the goods to be transported on the ridged bottom plate can be output from the hollow channel;

the ridged bottom plate is arranged along the vertical direction and is arranged on the upper surface of the bottom plate in the hollow box body, and the longitudinal section of the ridged bottom plate is arranged in an inverted cone shape; the bottoms of the two horizontal sides of the ridged bottom plate are fixedly arranged on the upper surfaces of the two horizontal ends of the bottom plate, and the bottoms of the two longitudinal sides of the ridged bottom plate are connected with the side plates;

the heavy box hanging point is connected to the lower turning plate and is arranged on the outer end face of the lower turning plate far away from the bottom plate, and the empty box hanging point is connected to the outer side of the side plate right above the heavy box hanging point.

2. The self-unhooking open-bottom self-discharging box according to claim 1, wherein: the horizontal two sides of the bottom plate are movably hinged with the horizontal one end of the lower turning plate through a through shaft.

3. The self-unhooking open-bottom self-discharging box according to claim 1, wherein: the self-discharging box further comprises a fork base, wherein the fork base is arranged on the outer side of the bottom of the box body, and the center distance of the fork base is 2200mm.

4. The self-unhooking open-bottom self-discharging box according to claim 1, wherein: the side plates and the ridged bottom plates are made of high-strength materials; or, the number of the heavy box hanging points is 4, the number of the empty box hanging points is 4, or, the heavy box hanging points comprise connecting parts and lifting lug parts which are connected, the connecting parts are arranged along the vertical direction, the connecting parts are fixedly arranged on the lower turning plate, the lifting lug parts are obliquely arranged along the horizontal direction, and the lifting lug parts can be hung with a short branched chain round hanging ring of a lifting appliance; or the height of the connecting part is 150mm, and the included angle between the hanging lug part and the horizontal plane is 60 degrees.

5. The self-unhooking open-bottom self-discharging box according to claim 1, wherein: the empty box lifting point comprises an empty box connecting part, an empty box lifting lug part and an anti-falling part, wherein the empty box lifting lug part is arranged along the horizontal direction, the empty box connecting part and the anti-falling part are arranged along the vertical direction, the empty box connecting part and the anti-falling part are respectively coaxially connected with each other and are arranged at the two horizontal ends of the empty box lifting lug part, the empty box connecting part is fixedly arranged on a side plate of the box body, the empty box lifting lug part can be hung with a circular ring of a lifting appliance, and the diameter of the anti-falling part along the vertical direction is larger than that of the empty box connecting part along the vertical direction, or the empty box lifting lug part is of a cylinder structure, and the size of the empty box lifting lug part is as follows: diameter 90mm, height 60mm; the material of empty case connecting portion and anticreep portion is circular band iron, and the size of this empty case connecting portion is: diameter 150mm, thickness 5mm, this anti-disengaging portion's size is: 200mm and 6mm thick.

6. The self-unhooking open-bottom self-discharging box according to claim 1, wherein: the size of the box body is set to be 5000mm multiplied by 2450mm multiplied by 2500mm, or the angle between the ridged bottom plating and the bottom plate is set to be 35 degrees, or the size of the turndown plate is set to be 900mm multiplied by 2500mm.

7. The self-unhooking open-bottom dump box of any one of claims 1 to 6, wherein: the side plates are provided with vertical beams, the vertical beams are arranged along the vertical direction, and a plurality of vertical beams are arranged; or the lower turning plate is provided with a limiting steel wire rope; or a vertical beam is arranged between the ridged bottom plate and the bottom plate; or, the ridged bottom plate is provided with reinforcing ribs.

8. A lifting appliance, which is characterized in that: the self-unhooking open-bottom self-unloading box as claimed in any one of claims 1 to 7, wherein the lifting appliance comprises a supporting beam and a lifting chain, the lifting chain is connected and arranged on the supporting beam through a shackle, the lifting chain comprises a main chain, a long branched chain, a short branched chain and a round lifting ring, one ends of the long branched chain and the short branched chain are connected and arranged with one end of the main chain through the round lifting ring, the other end of the long-chain branch is connected with a long-chain branch round hanging ring, the long-chain branch round hanging ring can be detachably connected with an empty box hanging point, the other end of the short-chain branch is connected with a short-chain branch round hanging ring, the short-chain branch round hanging ring can be detachably connected with a heavy box hanging point, and the other end of the main chain is connected with a shackle through a butterfly buckle.

9. The spreader of claim 8, wherein: the lifting appliance comprises 2 supporting beams and 4 pairs of hanging chains, and the supporting beams are connected with the two pairs of hanging chains.

10. The spreader of claim 8 or 9, wherein: the round hanging rings, the short branched chain round hanging rings and the long branched chain round hanging rings are all 12t high-strength round hanging rings.