CN215368763U

CN215368763U - Movable continuous feeding platform for ultrahigh-performance concrete

Info

Publication number: CN215368763U
Application number: CN202120791003.7U
Authority: CN
Inventors: 王洪新; 龚叶峰; 梁怀柱; 商涛平; 张杨洋; 董兆辉
Original assignee: Shanghai Urban Construction Municipal Engineering Group Co Ltd
Current assignee: Shanghai Urban Construction Municipal Engineering Group Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-31
Anticipated expiration: 2031-04-19

Abstract

The utility model relates to a mobile continuous feeding platform for ultra-high performance concrete, which comprises a truss track plate, wherein a traveling system is arranged at the bottom of the truss track plate, the traveling system can enable the mobile continuous feeding platform to move along the distribution direction of the ultra-high performance concrete, an UHPC (ultra high performance polycarbonate) stirrer, a material storage tank, a hoisting system and a concrete pumping device are arranged on the truss track plate, the hoisting system is used for loading materials stored in the material storage tank into the UHPC stirrer, a discharge hole of the UHPC stirrer is connected with the concrete pumping device, and the concrete pumping device is used for pumping the stirred UHPC to UHPC distribution equipment. The utility model has the advantages that: the process of establishing a conventional mixing station and conveying the UHPC mixture by using a tank truck is omitted, so that the construction cost of the mixing station and the use of the tank truck are saved, the construction cost is greatly saved, the transportation time of the UHPC in the way is saved, and the construction period is further shortened.

Description

Movable continuous feeding platform for ultrahigh-performance concrete

Technical Field

The utility model relates to the technical field of ultra-high performance concrete pavement construction, in particular to a mobile continuous feeding platform for ultra-high performance concrete.

Background

At present, the ultra-high performance concrete (UHPC) is widely applied to the pavement of large-span orthotropic steel bridge decks in China. The UHPC is a high-strength high-performance concrete product with high material cost, poor construction performance and short working time; because the material cost is high, but the operating time is short, former mix, transportation and work progress: the mode of mixing materials in a mixing plant → transporting a mixing truck to a construction site → pumping and paving by a pump truck has the following three problems: (1) the UHPC material consists of a gelled material and micron-sized fine aggregate, the water-cement ratio is less than 0.25, and the UHPC material contains steel fibers, so that the traditional stirring station no longer meets the requirements of the blending process of the UHPC, and the blending quality does not reach the standard; (2) the transportation process is tedious, and a large amount of UHPC material with high price can be wasted when the stirring tank car and the pump truck are cleaned each time; (3) from the mixing station to the construction site, the transportation time is uncertain, the problems of viscosity increase, hardening and the like of the UHPC material in the transportation process can exist, and the construction processes of pumping, paving and the like can not be met any more in serious cases.

Disclosure of Invention

The utility model aims to provide a mobile continuous feeding platform for ultra-high performance concrete, which integrates a stirring and feeding system for ultra-high performance concrete (UHPC) on a feeding platform and enables the feeding platform to run, thereby realizing synchronous construction of on-site stirring and material distribution of the ultra-high performance concrete and improving the construction quality.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a portable continuous feed platform of ultra high performance concrete which characterized in that: the movable continuous feeding platform comprises a truss track plate, wherein a traveling system is arranged at the bottom of the truss track plate, the traveling system can enable the movable continuous feeding platform to move along the distribution direction of ultra-high performance concrete, an UHPC stirrer, a material storage tank, a hoisting system and a concrete pumping device are arranged on the truss track plate, the hoisting system is used for loading materials stored in the material storage tank into the UHPC stirrer, a discharge hole of the UHPC stirrer is connected with the concrete pumping device, and the concrete pumping device is used for pumping the stirred UHPC to UHPC distribution equipment.

The material storage box comprises a dry powder storage box, a steel fiber storage box, a mixing water tank and a liquid additive storage box, wherein the mixing water tank and the liquid additive storage box are connected with the UHPC through pipelines in a stirring manner.

And the mixing water tank is provided with a mixing water metering pump, and the mixing water in the mixing water tank is pumped into the UHPC stirring machine through the mixing water metering pump.

The liquid admixture storage tank is provided with a liquid admixture metering pump, and the liquid admixture in the liquid admixture storage tank is pumped into the UHPC stirring machine through the liquid admixture metering pump.

The UHPC stirrer is connected with an intelligent control system, and the intelligent control system is connected with and controls the working state of the UHPC stirrer.

And two sides of the truss track plate are respectively provided with a track guardrail.

An operation platform is arranged on the truss track plate.

The utility model has the advantages that: the UHPC stirring and feeding system is centralized on the feeding platform, and UHPC materials are directly pumped and constructed after being stirred on site, so that the process of establishing a conventional stirring station and conveying the UHPC mixture by using a tank car is omitted, the construction cost of the stirring station and the use of the tank car are saved, and the construction cost is greatly saved; meanwhile, the time for transporting the UHPC on the way is saved, the construction period is further shortened, and the loss of the UHPC in the transportation process is also avoided; the continuous feeding platform can move synchronously with the distributing machine, and directly pumps the stirred UHPC material to the distributing machine for distributing, so that the constructability of the mixture is ensured, the construction efficiency is greatly improved, and the continuous feeding platform is particularly suitable for occasions where no stirring station is built on site and the UHPC is transported by using a tank truck.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of fig. 1.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-2, the labels 1-21 are respectively shown as: the system comprises a UHPC mixer 1, an intelligent control system 2, a hoisting system 3, a dry powder storage tank 4, a steel fiber storage tank 5, a mixing water tank 6, a liquid admixture storage tank 7, a mixing water metering pump 8, a liquid admixture metering pump 9, a concrete conveying pump 10, a traveling system 11, a discharge port 12, an operation platform 13, a support 14, a rail guardrail 15, a feed hopper 16, a motor system 17, a labor protection product warehouse 18, a tool warehouse 19, a small water tank 20 and a truss rail plate 21.

Example (b): as shown in fig. 1, the main body of the mobile continuous feeding platform for ultra-high performance concrete in this embodiment includes a truss track plate 21, which is an area for arranging various functional devices above the truss track plate 21, and operation platforms 13 are provided on both sides of the truss track plate 21 for operators to perform mixing and feeding operations. A walking system 11 is arranged at the bottom of the truss track plate 21; under the drive of the walking system 11, the whole feeding platform can move in a construction site of ultra-high performance concrete (UHPC), and the feeding platform and the distributing machine can synchronously move by controlling the moving speed and the moving direction of the feeding platform, so that the on-site stirring and distributing of the UHPC are synchronously carried out, and the construction quality of the UHPC is effectively improved.

As shown in fig. 1, a dry powder storage tank 4 for storing raw materials of UHPC, a steel fiber storage tank 5, a blending water tank 6 and a liquid admixture storage tank 7 are arranged on a truss track plate 21, wherein the dry powder storage tank 4 is used for storing dry UHPC, the steel fiber storage tank 5 is used for storing steel fibers for UHPC, the blending water tank 6 is used for storing blending water used in the process of manufacturing UHPC, and the liquid admixture storage tank 7 is used for storing admixtures such as water reducing agent, plasticizer, retarder, early strength admixture and the like used in the process of manufacturing UHPC.

As shown in fig. 2, in this embodiment, a small water tank 20 is disposed on a truss track plate 21, the small water tank 20 is connected to the mixing water tank 6, and the mixing water stored in the mixing water tank 6 is pumped into the small water tank 20 and then pumped into the UHPC mixer 1 from the small water tank 20, so as to precisely control the water amount.

As shown in fig. 1, a UHPC mixer 1 and a hoist system 3 are installed on a truss track plate 21. Wherein, the UHPC mixer 1 is communicated with a mixing water tank 6 and a liquid admixture storage tank 7 through pipelines, so that mixing water and the liquid admixture can be supplied into the UHPC mixer 1 through the pipelines. The mixing water tank 6 is provided with a mixing water metering pump 8, mixing water can enter the inside of the UHPC mixer 1 under the pumping of this mixing water metering pump 8, and the water supply amount thereof is accurately controlled by the mixing water metering pump 8. Likewise, the liquid admixture storage tank 7 is provided with a liquid admixture metering pump 9, and the liquid admixture can be fed into the inside of the UHPC mixer 1 by the pumping of the liquid admixture metering pump 9 and the amount thereof can be precisely controlled. The hoisting system 3 is used for hoisting UHPC dry powder in the dry powder storage tank 4 and steel fibers in the steel fiber storage tank 5 into the UHPC mixer 1 through a feed hopper 16. The UHPC stirrer 1 can drive the stirring blades thereof to fully stir UHPC dry powder, steel fibers, stirring water and additives which are put into the UHPC stirrer 1 through the motor system 17, thereby processing and manufacturing UHPC on a construction site.

As shown in FIG. 1, a concrete delivery pump 10 is provided at the position of a discharge port 12 of a UHPC mixer 1, and the UHPC product discharged from the discharge port 12 can be directly discharged into the concrete delivery pump 10 and pumped into a distributing machine by the concrete delivery pump 10 for UHPC distributing construction. In this embodiment, a guide plate arranged obliquely downward may be provided at the position of the discharge port 12 to guide the UHPC finished product into the concrete delivery pump 10.

As shown in figure 1, in order to avoid the influence of the vibration of the UHPC mixer 1 during mixing on the stability of the truss track plate 21, a support 14 is arranged at the bottom of the UHPC mixer 1, and the support 14 supports the UHPC mixer 1 and lifts the UHPC mixer 1 to a certain height away from the truss track plate 21, thereby ensuring the use safety.

As shown in FIG. 1, a UHPC blender 1 is provided with an intelligent control system 2, and the intelligent control system 2 can be connected to control the working state of the UHPC blender 1 to process and manufacture UHPC with different parameter requirements. In this embodiment, the intelligent control system 2 may further be connected to control the mixing water metering pump 8 and the liquid admixture metering pump 9 to adjust the amounts of the mixing water and the liquid admixture, respectively.

As shown in fig. 1, rail guardrails 15 are provided on both sides of the feeding platform for protecting the safety of the operator. As shown in fig. 1, a work storage 18 and a tool storage 19 are further provided at one side of the truss track plate 21 for stacking work and tools used in the corresponding area.

In the embodiment, in specific implementation: in this embodiment, since a plurality of admixtures can be stored in the liquid admixture storage tank 7, the amount of each admixture can be precisely controlled by piping or by providing a plurality of liquid admixture metering pumps 9.

The UHPC dry powder stored in the dry powder storage bin 4 can be in standard packaging for quantitative control when hoisted for delivery by the hoist system 3. The steel fibers in the fiber storage tank 5 can be stacked in the same manner for quantitative control.

The traveling system 11 may adopt some existing traveling driving mechanisms, for example, including a driving motor and a roller, and a guide rail is laid in the construction site, so that the guide rail moves along the direction of the guide rail under the driving of the driving motor.

When the embodiment is used, the method comprises the following steps:

1) before construction, stirring and feeding equipment is sequentially arranged on the truss track plate 21, an intelligent control system 2 of the UHPC stirrer 1 is adjusted after the installation is finished, the rotating speed and time of the stirrer are adjusted according to construction requirements, and the water consumption, additive addition and steel fiber doping amount are adjusted according to material proportion.

2) The hoisting system 3 hoists the premixed dry powder from the dry powder storage tank 4 to a feeding port, constructors put the dry powder into a feeding hopper, the feeding is 1t of heavy material bags each time, the feeding port is closed, and the powder enters the main machine 1 of the stirrer to be stirred; an electric protection device can be arranged above the powder stirring equipment and is used for sealing the feed opening.

3) The liquid admixture in the left liquid admixture storage tank 7 enters the UHPC mixer 1 through a conveying pipeline which is connected with a liquid admixture metering pump 9, and the addition amount of the admixture can be preset.

4) When intaking, be equipped with automatic metering device on the water tank 6 for the left side mix, through the water quality of adding water predetermined in the small-size water tank 20 of water pipe inflow, constructor should recheck the small-size water tank internal water yield this moment, then adopts the water pump to transport the water in the small-size water tank 20 in the UHPC mixer 1 through the pipeline.

5) The steel fiber in the ultra-high performance concrete can be added into the powder in advance, and can also be added into the UHPC mixer 1 through the right steel fiber storage box 5, and similarly, an automatic metering device can also be arranged at the steel fiber storage box 5 to measure the weight of the steel fiber, and the steel fiber mixing amount is controlled through the preset steel fiber adding quality.

6) After the stirring is completed, firstly sampling is carried out on the mixture for slump expansion and other performance tests, when the design requirements are met, the mixture is unloaded into the concrete conveying pump 10 of the lower layer, and the mixture is pumped to the hopper of the distributing machine through the pump pipe for construction and paving.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.

Claims

1. The utility model provides a portable continuous feed platform of ultra high performance concrete which characterized in that: the movable continuous feeding platform comprises a truss track plate, wherein a traveling system is arranged at the bottom of the truss track plate, the traveling system can enable the movable continuous feeding platform to move along the distribution direction of ultra-high performance concrete, an UHPC stirrer, a material storage tank, a hoisting system and a concrete pumping device are arranged on the truss track plate, the hoisting system is used for loading materials stored in the material storage tank into the UHPC stirrer, a discharge hole of the UHPC stirrer is connected with the concrete pumping device, and the concrete pumping device is used for pumping the stirred UHPC to UHPC distribution equipment.

2. The mobile continuous feed platform of ultra-high performance concrete of claim 1, wherein: the material storage box comprises a dry powder storage box, a steel fiber storage box, a mixing water tank and a liquid additive storage box, wherein the mixing water tank and the liquid additive storage box are connected with the UHPC through pipelines in a stirring manner.

3. The mobile continuous feed platform of ultra-high performance concrete of claim 2, wherein: and the mixing water tank is provided with a mixing water metering pump, and the mixing water in the mixing water tank is pumped into the UHPC stirring machine through the mixing water metering pump.

4. The mobile continuous feed platform of ultra-high performance concrete of claim 2, wherein: the liquid admixture storage tank is provided with a liquid admixture metering pump, and the liquid admixture in the liquid admixture storage tank is pumped into the UHPC stirring machine through the liquid admixture metering pump.

5. The mobile continuous feed platform of ultra-high performance concrete of claim 1, wherein: the UHPC stirrer is connected with an intelligent control system, and the intelligent control system is connected with and controls the working state of the UHPC stirrer.

6. The mobile continuous feed platform of ultra-high performance concrete of claim 1, wherein: and two sides of the truss track plate are respectively provided with a track guardrail.

7. The mobile continuous feed platform of ultra-high performance concrete of claim 1, wherein: an operation platform is arranged on the truss track plate.