Discharging system for transformation of existing small bridge type grab ship unloader
By designing an unloading system with independent support and mobility, combined with dust suppression and a multi-layer funnel structure, the problems of equipment overload and poor dust removal effect in the transformation of small bridge grab unloaders were solved, achieving efficient and low-cost unloading and environmental protection transformation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-10
AI Technical Summary
Existing small bridge grab unloaders cannot meet the unloading needs of large ore carriers, and the retrofit process suffers from problems such as equipment overloading, high retrofit costs, and poor environmental dust removal.
A material unloading system was designed, comprising a funnel system, a funnel support system, and a dust removal system. It adopts an independent support and walking system, combined with a dust suppression bin, an electric dust curtain, and a multi-layer funnel structure, to achieve synchronous common track walking and efficient dust removal.
It reduced the difficulty and cost of the renovation, shortened the construction period, met environmental protection requirements, and reduced food loss and dust pollution.
Smart Images
Figure CN224105124U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to port transportation technical field, and specifically point to a kind of unloading system for existing small bridge type grab ship unloader reconstruction. BACKGROUND
[0002] The existing small bridge type grab ship unloader is faced with elimination because it cannot meet the operation demand of large ore carrier, and bulk grain terminal often needs to add ship unloading equipment, and the small bridge type grab ship unloader can meet the loading and unloading operation demand of bulk grain, so some small bridge type grab ship unloaders are relocated to bulk grain terminal to unload bulk grain. Since the original unloading hopper of small bridge type grab ship unloader is designed according to the ore bulk density ratio, its volume is generally small, and it is not suitable for bulk grain unloading, so the hopper system needs to be transformed and replaced. The traditional transformation scheme is only to install a large-capacity hopper at the position of the original unloading hopper. The large-capacity hopper will increase the overall load of the ship unloader, and the original equipment will be overloaded, so high requirements are put forward for the steel structure support and track unit bearing capacity of the bridge machine, the bridge machine support and track need to be reinforced, resulting in high transformation cost, long construction period, and even unfeasible risk.
[0003] In addition, the unloading system also needs to meet the environmental protection specification of terminal during transformation. During operation, a large amount of dust in bulk grain is raised, which often exceeds the dust raising standard of environmental protection requirement, so a dust removal system needs to be added, and a hopper with adaptive structure needs to be configured for synchronous dust removal. The hopper and the configured dust removal system of the prior art can generally achieve the dust removal purpose, but there are still problems of unreasonable hopper structure and negative pressure dust removal force that will take away some grain particles, resulting in grain loss or filter screen blockage. CONTENT OF UTILITY MODEL
[0004] The utility model aims at overcoming the defects of prior art, and provides an unloading system for reconstruction of existing small bridge type grab ship unloader to solve one or more problems in the above background.
[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:
[0006] The application discloses a kind of for both small bridge type grab ship unloader reconstruction unloading system, unloading system includes hopper system, hopper support system and dust removal system, hopper system is set to the positive overhead of receiving belt conveyor, and is located on the grab unloading point in ship unloader, it is independently supported by hopper support system, hopper support system includes support leg, support beam, support platform and linkage rod, dust removal system connects hopper system, both are installed on support platform, support platform is erected on support beam, and is supported by support leg, support leg is set to the outside of ship unloader travel system, and its bottom is provided with travelling wheel, support beam is parallel to ship machine track, and its both ends respectively extend outside ship unloader and are connected with support leg, support leg is connected with support column by linkage rod, for hopper system and ship unloader form synchronous co-rail travel whole.
[0007] Further, the hopper system includes a dust suppression bin, an electric dust curtain, and a hopper. The dust suppression bin is covered above the hopper and has a three-sided and top-enclosed structure. A grab inlet is arranged on the sea side of the dust suppression bin, and an electric dust curtain is arranged on the grab inlet. The electric dust curtain is provided with a grabber sensing detector and a door curtain control system. A feeding groove is arranged on the top plate of the dust suppression bin for allowing the grabber hoisting rope to travel.
[0008] Further, the hopper includes, from outside to inside, a dust removal bin, an outer hopper body, and an inner hopper body. The dust removal bin is installed on the support platform and serves as a support for the hopper. The upper ends of the outer hopper body, the inner hopper body, and the dust removal bin are connected as an integrated structure. The dust removal bin has a cylindrical structure and forms a closed dust removal passage with the upper part of the outer conical surface of the outer hopper body. The dust removal passage is connected with the dust removal system. The outer hopper body and the inner hopper body have a double-layered sleeve structure. The inner hopper body is located inside the outer hopper body, and the inner discharge port of the inner hopper body is higher than the outer discharge port of the outer hopper body. The taper of the inner hopper body is greater than that of the outer hopper body. An annular dust escape air channel is formed between the upper part of the inner conical surface of the outer hopper body and the outer conical surface of the inner hopper body, which is continuously narrowed from bottom to top. Dust removal filter holes are arranged on the outer hopper body and located at the upper part of the dust escape air channel and connected with the dust escape air channel.
[0009] Further, a grid is arranged on the inner discharge port of the lower end of the inner hopper body for dispersing blocky materials and removing impurities.
[0010] Further, an automatic discharge valve is arranged on the outer discharge port of the lower end of the outer hopper body.
[0011] Further, a plurality of operation doors are arranged on the side of the dust suppression bin and opposite to the dust removal filter holes. A ladder is arranged on the land side of the dust suppression bin and leads to the support platform.
[0012] Further, sealing brushes are arranged on the two side walls of the feeding groove to close the groove.
[0013] Further, photovoltaic panels are arranged on the top plate of the dust suppression bin to provide energy for the dust removal system, the electric dust curtain, and the automatic discharge valve.
[0014] Compared with the prior art, the unloading system for the existing small bridge type grab ship unloader reconstruction has the following beneficial effects:
[0015] The unloading system of the ship unloader update step-by-step enables the ship unloader to adapt to the unloading of cargo types, reduces the difficulty of the reconstruction of the ship unloader and the wharf track by setting the walking system and the support system independent of the ship unloader, can greatly save the cost and shorten the construction period, and the ship unloader and the unloading system are connected to form a whole by the linkage rod, and the same drive can be shared, and the relative positions of the two are beneficial to be kept.
[0016] The dust removal system and the matched hopper structure design can effectively separate and remove dust in the grain, prevent dust from escaping, and meet the environmental protection requirements of the wharf. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a front structure schematic view of the unloading system disclosed by the utility model;
[0018] Figure 2 It is a side structure schematic view of the unloading system disclosed by the utility model;
[0019] Figure 3 It is a front structure schematic view of the hopper system disclosed by the utility model;
[0020] Figure 4 It is a top structure schematic view of the hopper system disclosed by the utility model.
[0021] In the drawing: 1, ship unloader; 11, grab; 2, hopper system; 21, dust suppression bin; 22, dust removal bin; 23, dust removal channel; 24, outer hopper body; 241, dust removal filter hole; 25, automatic unloading valve; 26, inner unloading port; 27, inner hopper body; 28, electric dustproof curtain; 29, bin top plate; 291, feeding groove; 3, hopper support system; 31, linkage rod; 32, supporting leg; 33, supporting cross beam; 34, supporting platform; 4, receiving belt conveyor; 5, walking system; 51, supporting column; 6, dust removal system; 7, photovoltaic panel. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only the best embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0023] The embodiment provides a kind of for the unloading system of existing small bridge type grab ship unloader reconstruction, remove the original unloading hopper system 2 of small bridge type grab ship unloader 1, replace the unloading system of this embodiment, make it suitable for grain density than design, the volume of unloading system is the N times of original unloading hopper system 2, N=original work kind of bulk density / new work kind of bulk density, after unloading system increases, the overall weight of small bridge type grab ship unloader 1 will be increased, so it is higher requirement to the structural support strength of small bridge type grab ship unloader 1 and the load strength of its walking system 5, therefore, to avoid the structural modification of small bridge type grab ship unloader 1, the updated unloading system uses independent support and walking system, specifically, small bridge type grab ship unloader 1 and its unloading system after the modification of unloading system are as shown in Figures 1-4 ;
[0024] Referring again to Figures 1-2 , the unloading system includes hopper system 2, hopper support system 3 and dust removal system 6, hopper system 2 is arranged directly above the receiving belt conveyor 4 and is located at the unloading point of grab 11 in ship unloader 1, hopper support system 3 is additionally provided to independently support hopper system 2, hopper support system 3 includes supporting legs 32, supporting cross beams 33, supporting platforms 34 and linkage rods 31, the supporting legs 32 are at least four, which are arranged outside the supporting columns 51 of the ship unloader walking system 5, and the bottom is provided with walking wheels, which are supported and walked by using the space outside the ship unloader 1 and share the same ship rail with the small bridge type grab ship unloader 1, the walking wheels are determined by the vertical load divided by the minimum bearing capacity of the ship rail, and are multiples of 4, not less than 8, the two ends of the supporting cross beams 33 extend out of the ship unloader 1, are arranged on the four supporting legs 32 and are parallel to the ship rail, the supporting platforms 34 are arranged on the supporting cross beams 33 and are in parallel state, the dust removal system 6 is connected to the hopper system 2, and both are installed on the supporting platforms 34; the ship unloader 1 and the hopper system 2 share a ship rail and are independently supported, therefore, in order to construct the synchronous common rail walking whole of the hopper system 2 and the ship unloader 1, the supporting legs 32 of the hopper system 2 are connected to the supporting columns 51 through the linkage rods 31, and the same driving device can synchronously drive the common rail synchronous walking of the ship unloader 1 and the hopper system 2.
[0025] In the embodiment, in order to meet the environmental protection requirements, the hopper system 2 should also have dust removal, dust prevention and dust suppression functions, which include dust suppression bin 21, electric dust prevention curtain 28 and hopper, the unloading point of grab 11 is located in the dust suppression bin 21, and the dust raising range during unloading is limited, as shown in Figure 3 and Figure 4As shown, the dust suppression bin 21 is covered above the funnel, which is surrounded by three metal side plates and a bin top plate 29, and a grab bucket 11 entrance is reserved. In order to prevent dust from escaping during unloading, an electric dust curtain 28 is arranged above the entrance of the grab bucket 11. The electric dust curtain 28 is provided with a grab bucket 11 sensing detector and a door curtain control system. The door curtain control system automatically opens the door according to the preset automatic opening time of the moving speed and unloading time of the grab bucket 11. After the grab bucket 11 is detected within a certain distance, the electric dust curtain 28 is automatically opened to allow the grab bucket 11 to enter the bin, and the electric dust curtain 28 is closed after the grab bucket 11 is completely in the bin. According to the preset automatic opening time, the electric dust curtain 28 is opened to allow the grab bucket 11 to exit the bin, and the electric dust curtain 28 is closed after the grab bucket 11 is completely out of the bin. Thus, during the serious dust stage of unloading, the dust suppression bin 21 is in a fully closed state, effectively controlling dust pollution. In order to allow the traveling of the hoisting rope of the grab bucket 11, a feeding groove 291 is arranged on the top of the bin top plate 29 of the dust suppression bin 21. The feeding groove 291 is adapted to the moving stroke of the grab bucket 11. In order to prevent dust from escaping from the feeding groove 291, sealing brushes are arranged on the groove walls on both sides of the feeding groove 291 to allow the hoisting rope to pass through while preventing dust from escaping to a certain extent.
[0026] As a further technical solution, considering that the dust settling time is too long, there is still a possibility of diffusion when the electric dust curtain 28 is opened. Therefore, a dust removal system 6 is arranged and a certain structure of the funnel is configured to promote rapid dust settling and removal. Referring again to Figure 3 , the funnel is an integrated structure, which includes a dust removal bin 22, an outer bucket body 24 and an inner bucket body 27 from outside to inside. The outer bucket body 24 and the inner bucket body 27 are multi-faceted conical cylinder structures or conical cylinder structures. The dust removal bin 22 serves as a support for the funnel and is clamped on the mounting hole of the support platform 34. The outer bucket body 24 extends downward from the mounting hole. The upper ends of the dust removal bin 22, the outer bucket body 24 and the inner bucket body 27 are located at the same height and are connected to form an integrated structure.
[0027] The dust removal bin 22 has a multi-faceted straight cylinder or cylindrical structure that is adapted to the outer bucket body 24. The dust removal bin 22 is surrounded and welded with the outer conical surface of the outer bucket body 24 to form a closed dust removal channel 23. The dust removal channel 23 is provided with a dust removal port, which is connected and communicated with the dust removal system 6. In order to facilitate the replacement and maintenance of the filter screen on the dust removal filter hole 241 and improve the dust removal efficiency of the unloading system, a plurality of operation doors are arranged on the side surface of the dust removal bin 22, respectively corresponding to each dust removal filter hole 241. A ladder is arranged on the land side of the dust suppression bin 21 to access the support platform 34. Maintenance personnel can enter the dust removal channel 23 by opening the operation door from the support platform 34. The height and cross-sectional width of the dust removal channel 23 should meet the spatial requirements of the maintenance personnel.
[0028] The outer bucket body 24 and the inner bucket body 27 are double-layered sleeve structures, the inner bucket body 27 is located in the outer bucket body 24, the inner discharge port 26 of the inner bucket body 27 is higher than the outer discharge port of the outer bucket body 24, and the taper of the inner bucket body 27 is greater than the taper of the outer bucket body 24, the taper angle of the inner bucket body 27 is not less than 45°, and the height of the inner bucket body 27 is not less than 1.0 m, so that a circular dust escape air channel with a continuously narrowing cross section from bottom to top is formed on the upper part of the inner taper surface in the outer bucket body 24 and the outer taper surface of the inner bucket body 27, dust is sucked by the negative pressure around the inner discharge port 26, and the negative pressure adsorption force is small near the inner discharge port 26 and becomes greater upward, so that it is beneficial for the falling of the grain particles with a certain weight and the rapid discharge and removal of the upward dust; and the grain bulk material unloaded by the grab bucket 11 is collected and discharged by the inner bucket body 27, the inner discharge port 26 at the lower end of the inner bucket body 27 is provided with a grid, the grain falls by the force and is separated from a large amount of dust and falls on the inner taper surface of the outer bucket body 24 to be separated again, and the dust is separated and removed by the twice impact and negative pressure adsorption; in addition, the grid has a grid size of 120 mm*120 mm, and has the effects of dispersing the blocky and bunched grain and removing the impurities in the grain.
[0029] A plurality of dust removal filter holes 241 are uniformly distributed on the peripheral surface of the outer bucket body 24, the dust removal filter holes 241 are located in the upper narrow area of the dust escape air channel and are respectively connected with the dust escape air channel and the dust removal channel 23, the dust removal port is also located in the upper part of the dust removal channel 23, and the dust removal filter holes 241 are arranged in a staggered manner, because the negative pressure adsorption force has a certain pressure drop in the dust removal channel 23, the particles with a certain weight will be settled in the dust removal channel 23, and the collection is facilitated.
[0030] In addition, in order to control the grain discharge flow and match it with the conveying speed of the receiving belt conveyor 4, the automatic discharge valve 25 is arranged on the outer discharge port at the lower end of the outer bucket body 24.
[0031] As a further technical scheme, in order to realize low-carbon operation of the discharge system, the photovoltaic panel 7 is arranged on the warehouse top plate 29 and is used for providing supplementary energy for the dust removal system 6, the electric dustproof curtain 28 and the automatic discharge valve 25.
[0032] The directions and positions described in the description of the present application are described in the directions and positions shown in the corresponding drawings. Figures 1-4 These terms are mainly used for better describing the present application and its embodiments, and are not used for limiting the indicated devices, elements or components to have a specific direction or to be constructed and operated in a specific direction;
[0033] In addition, the above-mentioned partial terms can be used to represent other meanings in addition to the orientation or positional relationship, for example, the term "upper" and the like can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.
[0034] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A discharge system for retrofitting an existing small bridge-type grab ship unloader, characterized in that: The unloading system comprises a hopper system, a hopper support system and a dust removal system, the hopper system is arranged above the receiving belt conveyor and at the grab unloading point in the ship unloader, and is independently supported by the hopper support system, the hopper support system comprises a supporting leg, a supporting beam, a supporting platform and a linkage rod, the dust removal system is connected to the hopper system, and both are mounted on the supporting platform, the supporting platform is arranged on the supporting beam and supported by the supporting leg, the supporting leg is arranged outside the walking system of the ship unloader and provided with walking wheels at the bottom, the supporting beam is parallel to the ship unloader track and extends out of the ship unloader at both ends to be connected to the supporting leg, and the supporting leg is connected to the supporting column of the walking system through the linkage rod, so that the hopper system and the ship unloader are synchronously connected to form a whole walking system.
2. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 1, characterized in that: The hopper system comprises a dust suppression bin, an electric dustproof curtain and a hopper, the dust suppression bin is arranged above the hopper and has a three-sided and top-enclosed structure, a grab inlet is arranged on the sea side of the dust suppression bin, the electric dustproof curtain is arranged on the grab inlet, the electric dustproof curtain is provided with a grab inductive detector and a curtain control system, and a feeding groove is arranged on the top plate of the dust suppression bin for allowing the grab hoisting rope to walk.
3. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 2, characterized in that: The hopper comprises a dust removal bin, an outer hopper body and an inner hopper body from outside to inside, the dust removal bin is mounted on the supporting platform and serves as the support of the hopper, the upper ends of the dust removal bin, the outer hopper body and the inner hopper body are connected to form an integrated structure, the dust removal bin has a cylindrical structure, the dust removal bin and the outer hopper body are enclosed at the upper part of the outer conical surface of the outer hopper body to form a closed dust removal channel, and the dust removal channel is connected to the dust removal system, the outer hopper body and the inner hopper body have a double-layered structure, the inner hopper body is located in the outer hopper body, the inner discharge port of the inner hopper body is higher than the outer discharge port of the outer hopper body, the taper of the inner hopper body is greater than that of the outer hopper body, and the upper part of the inner conical surface of the outer hopper body and the outer conical surface of the inner hopper body form an annular dust escaping air channel that is continuously narrowed from bottom to top, dust removal filter holes are arranged on the outer hopper body, the dust removal filter holes are located at the upper part of the dust escaping air channel and connected to the dust escaping air channel.
4. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 3, characterized in that: A grid is arranged on the inner discharge port of the inner hopper body for dispersing blocky materials and removing impurities.
5. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 4, characterized in that: An automatic discharge valve is arranged on the outer discharge port of the outer hopper body.
6. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 3, characterized in that: A plurality of operation doors are arranged on the side of the dust removal bin and opposite to the dust removal filter holes, and a ladder is arranged on the land side of the dust suppression bin and connected to the supporting platform.
7. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 2, characterized in that: Sealing brushes are arranged on the groove walls of the feeding groove to close the groove.
8. The unloading system for retrofitting an existing small bridge type grab ship unloader according to claim 5, characterized in that: Photovoltaic panels are arranged on the top plate of the dust suppression bin to provide energy for the dust removal system, the electric dustproof curtain and the automatic discharge valve.