A mine roadway cement concrete mixing truck and a construction process thereof

Abstract

The application discloses a mine-used roadway cement concrete mixer and a construction process thereof, and belongs to the technical field of mine-used roadway cement pavement construction. The mixer comprises a running chassis, a power system and an aggregate bin system. The aggregate bin system is arranged on the running chassis and is used for storing and conveying aggregates. The mixer further comprises a powder bin system and a mixing and conveying system. The powder bin system is arranged on the running chassis and is used for storing and conveying powders. The mixing and conveying system is used for receiving the aggregates conveyed by the aggregate bin system and the powders conveyed by the powder bin system, and then stirring and conveying the aggregates and the powders to a receiving port of a slip-form paver. The mine-used roadway cement concrete mixer and the construction process thereof can produce plastic cement concrete on site, continuously supply the slip-form paver with the cement concrete, and ensure the quality of the cement concrete produced on site and the quality of the pavement, so that the cement slip-form paver is provided with a complete set of equipment and the requirements of mine-used roadway cement pavement construction are met.

Description

Technical Field

[0001] This invention relates to a cement concrete mixer truck for mine roadways and its construction process, belonging to the technical field of cement pavement construction for mine roadways. Background Technology

[0002] The existing construction of cement pavement in mine roadways generally involves the cement concrete being processed at a mixing plant, then transported underground by mining mixer trucks for pavement laying.

[0003] Due to the requirements for mechanization and automation in mine roadway paving, cement slipform pavers are generally used to pave roadways. However, since slipform pavers use plastic cement concrete with low moisture content and very low slump, it is difficult for existing ordinary mine cement mixer trucks to transport it, resulting in difficulties in feeding and unloading. Segregation is also prone to occur during long-distance transportation, affecting road surface quality. Ordinary mine cement mixer trucks cannot meet the requirements.

[0004] In view of the above reasons, this application proposes a cement concrete mixer truck for mine roadways to provide matching equipment for cement slipform pavers, so as to meet the requirements of cement pavement construction in mine roadways. Summary of the Invention

[0005] The purpose of this invention is to overcome the technical problems in the prior art of the inconvenience of constructing plastic cement concrete and the difficulty in coordinating with slipform pavers when paving road surfaces in mine roadways. This invention provides a cement concrete mixer truck for mine roadways and its construction process, which provides a matching system for cement slipform pavers and meets the requirements for cement roadway construction in mine roadways.

[0006] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0007] In a first aspect, the present invention provides a cement concrete mixer truck for mine roadways, comprising:

[0008] The chassis serves as the overall load-bearing structure for the aforementioned mine roadway cement concrete mixer truck.

[0009] A power system, mounted on the chassis, provides drive for the chassis.

[0010] An aggregate bin system includes an aggregate bin and an aggregate conveying system at the bottom of the aggregate bin, the aggregate bin system being mounted on the traveling chassis for the storage and conveying of aggregates;

[0011] A powder silo system, mounted on the mobile chassis, is used for the storage and conveying of powder materials; and,

[0012] A mixing and conveying system is used to receive aggregates conveyed by the aggregate bin system and powders conveyed by the powder bin system, mix and convey them to the material inlet of the slipform paver.

[0013] Based on the first aspect, the aggregate bin further includes a stone bin and a sand bin separated by a partition, and the aggregate conveying system includes a belt conveyor disposed at the bottom of the aggregate bin.

[0014] Furthermore, based on the first aspect, both the stone silo and the sand silo are provided with a discharge port at one end along the conveying direction of the belt conveyor, and each discharge port is provided with a metering gate for controlling the discharge cross-sectional area of ​​the discharge port.

[0015] Based on the first aspect, the powder silo system further includes a powder silo, a transverse stirring spiral inside the powder silo, and a longitudinal conveying spiral connected to the central discharge port at the bottom of the powder silo, wherein the conveying end of the longitudinal conveying spiral extends to the receiving port of the slipform paver.

[0016] Based on the first aspect, the transverse stirring spiral further includes a stirring shaft and a first spiral and a second spiral respectively disposed on the outer surfaces of the first and second ends of the stirring shaft, wherein the first spiral and the second spiral both convey material in the direction of the discharge port at the bottom center of the powder silo when the stirring shaft rotates.

[0017] Based on the first aspect, the mixing and conveying system further includes a posture adjustment device and a mixing and conveying screw rotatably connected thereto. One end of the mixing and conveying screw is provided with a receiving port for receiving aggregates and powders, and the other end is provided with a mixing discharge port for discharging materials to the receiving port of the slipform paver.

[0018] Furthermore, based on the first aspect, the mining roadway cement concrete mixer truck also includes an additive system mounted on the chassis, the additive system including an additive container and an additive metering system.

[0019] Based on the first aspect, the chassis further includes a rigid frame and a front axle and a rear axle mounted on the rigid frame.

[0020] Furthermore, based on the first aspect, the aggregate bin system is equipped with a weighing sensor.

[0021] Secondly, the present invention also provides a construction process for a mine roadway cement concrete mixer truck, which can be used for construction using the mine roadway cement concrete mixer truck described in any of the embodiments of the first aspect, including the following steps:

[0022] Storage warehouses for aggregates, powders and additives used in cement concrete production are set up in the tunnels;

[0023] Materials stored in the storage warehouse within the tunnel are loaded into the mine roadway cement concrete mixer truck;

[0024] The loaded mine roadway cement concrete mixer truck is transported to the slipform paver, and the mixing and conveying system is aligned with the material receiving port of the slipform paver.

[0025] The mine roadway cement concrete mixer truck and the slipform paver are started and moved synchronously, and the mine roadway cement concrete mixer truck is used to supply material to the slipform paver.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0027] (1) The mine roadway cement concrete mixer truck and its construction process provided by the present invention can produce plastic cement concrete on site, continuously supply material to the slipform paver, and the quality of the cement concrete produced on site will not be segregated due to the transportation distance, which can ensure the road surface quality, provide matching for cement slipform paver, and meet the requirements of mine roadway cement pavement construction.

[0028] (2) The present invention can adjust the cement concrete mix ratio at any time according to the road construction effect to obtain the best road quality; it can supply materials while producing and supply them as needed, thus avoiding material waste and material shortage.

[0029] (3) By setting up a storage warehouse in the roadway, the present invention can improve the efficiency of the continuous feeding of cement concrete mixer trucks in mine roadways on the one hand, and greatly reduce the occupation of the tight road traffic in the roadway because there is no need to transport materials from the ground on the other hand. In addition to being equipped with a slipform paver, the cement concrete mixer trucks in mine roadways can also operate independently and quickly transfer to the construction site to produce cement concrete of various proportions, which can meet the needs of various building materials in the roadway.

[0030] (4) The present invention can control the concrete setting time by adjusting the additive measures, so that the road can be put into use quickly, which is conducive to improving the overall production efficiency of the mine; the materials for producing cement concrete are loaded in advance, reducing the time occupied by loading materials during construction; the speed of the cement concrete mixer truck in the mine roadway is matched with the slipform, and there is no need to push it through the top vehicle mechanism of the slipform paver, which is convenient to operate and highly efficient. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the cement concrete mixer truck for mine roadways in Embodiment 1 of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the mixing and conveying system of the cement concrete mixer truck for mine roadways in Embodiment 1 of the present invention, showing the adjustment of its posture at different positions.

[0033] Figure 3 This is a schematic diagram of the aggregate bin metering gate of the cement concrete mixer truck for mine roadways in Embodiment 1 of the present invention.

[0034] Figure 4 This is a schematic diagram of the construction structure of a cement concrete mixer truck used in conjunction with a slipform paver in a mine roadway in Embodiment 2 of the present invention.

[0035] In the diagram: 1. Chassis; 1.1. Rigid frame; 1.2. Front axle; 1.3. Rear axle; 2. Power system; 3. Aggregate bin system; 3.1. Stone bin; 3.2. Sand bin; 3.3. Weighing sensor; 3.4. Metering gate; 3.5. Belt conveyor; 4. Powder bin system; 4.1. Powder bin; 4.2. Transverse mixing screw; 4.3. Longitudinal conveying screw; 5. Additive system; 6. Mixing and conveying system; 6.1. Attitude adjustment device; 6.2. Material inlet; 6.3. Mixing and conveying screw; 6.4. Mixing outlet; 7. Water system; 8. Electrical control system. Detailed Implementation

[0036] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0040] Example 1

[0041] This embodiment provides a cement concrete mixer truck for mine roadways, which mainly consists of a walking chassis 1, a power system 2, an aggregate bin system 3, a powder bin system 4, an additive system 5, a mixing and conveying system 6, a water system 7, and an electrical control system 8.

[0042] like Figure 1 As shown, the chassis 1 mainly consists of a rigid frame 1.1, a front axle 1.2, and a rear axle 1.3. The rigid frame 1.1 is an integral structure, which facilitates the installation of the entire machine system on it, especially for installing larger capacity hoppers. The front axle 1.2 and the rear axle 1.3 have high and low gear switching functions and are driven by variable hydraulic motors, which can achieve a wider speed adjustment range. When transporting and transferring, it travels at high speed to shorten the transportation time, and travels at low speed during construction to match the speed of the slipform paver. The front axle 1.2 and the rear axle 1.3 can both steer independently with a small turning radius, which can adapt to narrow mine tunnels.

[0043] In this embodiment, the power system 2 is a coal mine explosion-proof power system, which mainly includes an engine body, controller, radiator, fuel tank, exhaust system, and starting system, and the whole system meets the safety requirements of coal mines.

[0044] like Figure 1-2 As shown, the aggregate bin system 3 in this embodiment mainly consists of a stone bin 3.1, a sand bin 3.2, a weighing sensor 3.3, a metering gate 3.4, and a belt conveyor 3.5. The aggregate bin in this embodiment has an inverted trapezoidal cross-section to facilitate material discharge. The aggregate bin is used to store aggregates for cement concrete and is divided into a stone bin 3.1 and a sand bin 3.2 by a partition. Vibration devices can be installed on the side walls of the aggregate bin to prevent aggregates from sticking to the walls. The weighing sensor 3.3 is arranged below the aggregate bin to weigh the aggregates. Both the stone bin 3.1 and the sand bin 3.2 have discharge ports at one end along the conveying direction of the belt conveyor 3.5, and each discharge port is equipped with a metering gate 3.4 to control the discharge cross-sectional area. The metering gate 3.4, with its opening adjusted by a hydraulic cylinder equipped with a displacement sensor, controls the cross-sectional area of ​​the aggregate conveying section, thus achieving the function of aggregate volume metering. The belt conveyor 3.5, installed directly below the aggregate bin and above the vehicle frame, can transport the aggregate to the corresponding position. The belt conveyor speed is infinitely adjustable, and together with the metering gate 3.4, they can achieve accurate material measurement.

[0045] like Figure 3As shown, the powder silo system 4 mainly consists of a powder silo 4.1, a transverse stirring screw 4.2, and a longitudinal conveying screw 4.3. The transverse stirring screw 4.2 includes a stirring shaft and a first screw and a second screw respectively disposed on the outer surfaces of the first and second ends of the stirring shaft. When the stirring shaft rotates, the first screw and the second screw both convey material in the direction of the bottom center outlet of the powder silo 4.1. When stirring the powder in the powder silo 4.1, it can simultaneously squeeze it towards the bottom center outlet so that it can enter the longitudinal conveying screw 4.3. The powder silo 4.1 includes a silo body, a dust cover, a feed pipe, a level gauge, and a level observation window. The silo body has an anti-sticking structure design, and a vibration device can be installed on the outside of the silo body to prevent powder adhesion. The feed pipe is used for powder filling. The dust cover is used to balance the pressure inside the silo with the outside atmosphere and to prevent dust from overflowing and causing pollution. The level gauge is used to detect the material level, and the level observation window is used for personnel to observe the material level in the silo, facilitating powder filling operations. A transverse stirring screw 4.2 is arranged at the bottom of the powder silo, which uses stirring to ensure that the powder is fully fed into the longitudinal conveying screw 4.3. The longitudinal conveying screw 4.3 has a stepless adjustable speed, and the speed is monitored in real time by a speed sensor, enabling precise powder addition.

[0046] like Figure 1 As shown, the additive system 5 includes an additive container and an addition metering system, used to add a certain amount of additive according to the cement concrete mix proportion requirements.

[0047] The mixing and conveying system 6 mainly consists of an attitude adjustment device 6.1, a material receiving port 6.2, a mixing and conveying screw 6.3, and a mixing and discharging port 6.4; 6.1 The attitude adjustment device is used to adjust the attitude of the mixing device, causing the mixing and conveying system to rotate during relocation and transportation, such as... Figure 2 The construction process is shown with different positions and postures as needed; the receiving port 6.2 is used to receive aggregates, powders, additives, water, etc., to initially mix the materials; the mixing and conveying screw 6.3 is a spiral mixing mechanism that mixes the materials from the receiving port while conveying the mixture out from the discharge port 6.4.

[0048] like Figure 3 As shown, the water system 7 can deliver a certain amount of water into the material inlet 6.2 according to the cement concrete mix ratio requirements. When the construction is completed, it can also be used for high-pressure cleaning of the whole machine.

[0049] like Figure 2 As shown, the electrical control system 8 can be used for the functional control and data detection of the whole machine.

[0050] Example 2

[0051] This embodiment provides a construction process for a cement concrete mixer truck used in mine roadways. It utilizes the cement concrete mixer truck from Embodiment 1 to construct cement pavement within the roadway, and includes the following steps:

[0052] ①. Storage warehouses for aggregates, powders, additives, etc., used for cement concrete production are set up in the roadway. Corresponding material transfer equipment is installed at the storage warehouses to facilitate the transport of materials to the mixing trucks; ②. The mine roadway cement concrete mixing trucks load the relevant materials from the storage warehouses. Loading stops when the weighing sensor 3.3 at the bottom of the aggregate silo detects that it is full. Loading stops when the powder silo's built-in level sensor detects that the powder is full. Loading stops when the additives and water are detected by liquid level sensors; ③. The mine roadway cement concrete mixing trucks, fully loaded with materials, are transported to the front of the slipform paver. The attitude adjustment device 6.1 of the mixing and conveying system is deployed so that the mixing outlet 6.4 is positioned above the slipform paver's receiving port; ④. Open The one-button production function of the mine roadway cement concrete mixer truck allows the mixer truck to receive the speed signal sent by the slipform paver, ensuring that the speed and position of the mixer truck and the slipform paver are synchronized; ⑤. After activating the one-button production function of the mine roadway cement concrete mixer truck, the electrical control system 8 automatically adjusts the height of the aggregate bin metering gate 3.4, the speed of the belt conveyor 3.5, the speed of the longitudinal conveying screw 4.3 of the powder bin, the dosage of additives, and the amount of water added, according to the preset cement concrete mix ratio; ⑥. The metered output material enters the receiving port 6.2 of the mixing and conveying system 6, and is then mixed and output by the mixing and conveying screw 6.3, with the cement concrete entering the receiving port of the slipform paver. ⑦ When the mine roadway cement concrete mixer truck detects insufficient material level through the sensor, it automatically stops feeding material, manually or automatically starts the high-pressure water cleaning system to clean the relevant parts, and then adjusts the mixing device to the folded state through the one-button vehicle retraction function, and the whole vehicle leaves the site to load material again in the storage warehouse; ⑧ The next mine roadway cement concrete mixer truck continues to feed material; ⑨ The above process, ② to ⑧, is repeated until the construction is completed.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cement concrete mixer truck for mine roadways, characterized in that, include: The chassis (1) is used for the overall load-bearing of the cement concrete mixer truck used in the mine roadway; The power system (2) is installed on the chassis (1) to provide drive for the chassis (1); The aggregate bin system (3) includes an aggregate bin and an aggregate conveying system at the bottom of the aggregate bin. The aggregate bin system (3) is installed on the walking chassis (1) for the storage and conveying of aggregates. A powder storage system (4), mounted on the traveling chassis (1), is used for the storage and conveying of powder; and, The mixing and conveying system (6) is used to receive the aggregate conveyed by the aggregate bin system (3) and the powder conveyed by the powder bin system (4) and mix and convey them to the material inlet of the slipform paver. The construction process of the cement concrete mixer truck for mining roadways includes: Storage warehouses for aggregates, powders and additives used in cement concrete production are set up in the tunnels; Materials stored in the storage warehouse within the tunnel are loaded into the mine roadway cement concrete mixer truck; The cement concrete mixer truck for mine roadways, after being loaded with materials, is transported to the front of the slipform paver, and the mixing and conveying system (6) is aligned with the material receiving port of the slipform paver. The mine roadway cement concrete mixer truck and the slipform paver are started and moved synchronously, and the mine roadway cement concrete mixer truck is used to supply material to the slipform paver.

2. The mine roadway cement concrete mixer truck according to claim 1, characterized in that, The aggregate bin includes a stone bin (3.1) and a sand bin (3.2) separated by a partition, and the aggregate conveying system includes a belt conveyor (3.5) located at the bottom of the aggregate bin.

3. The mine roadway cement concrete mixer truck according to claim 2, characterized in that, The stone silo (3.1) and sand silo (3.2) are each provided with a discharge port at one end along the conveying direction of the belt conveyor (3.5), and each discharge port is provided with a metering gate (3.4) for controlling the discharge cross-sectional area of ​​the discharge port.

4. The mine roadway cement concrete mixer truck according to claim 1, characterized in that, The powder silo system (4) includes a powder silo (4.1), a transverse stirring spiral (4.2) inside the powder silo (4.1), and a longitudinal conveying spiral (4.3) connected to the central discharge port at the bottom of the powder silo (4.1). The conveying end of the longitudinal conveying spiral (4.3) extends to the material receiving port of the slipform paver.

5. The mine roadway cement concrete mixer truck according to claim 4, characterized in that, The transverse stirring spiral (4.2) includes a stirring shaft and a first spiral and a second spiral respectively disposed on the outer surfaces of the first and second ends of the stirring shaft, wherein the first spiral and the second spiral convey the material in the direction of the material conveying when the stirring shaft rotates, both of which are directed toward the bottom center outlet of the powder silo (4.1).

6. The mine roadway cement concrete mixer truck according to claim 1, characterized in that, The mixing and conveying system (6) includes a posture adjustment device (6.1) and a mixing and conveying screw (6.3) rotatably connected thereto. One end of the mixing and conveying screw (6.3) is provided with a receiving port (6.2) for receiving aggregates and powders, and the other end is provided with a mixing discharge port (6.4) for discharging materials to the receiving port of the slipform paver.

7. The mine roadway cement concrete mixer truck according to claim 1, characterized in that, The mine roadway cement concrete mixer truck also includes an additive system (5) installed on the walking chassis (1), the additive system (5) including an additive container and an additive metering system.

8. The cement concrete mixer truck for mine roadways according to claim 1, characterized in that, The chassis (1) includes a rigid frame (1.1) and a front axle (1.2) and a rear axle (1.3) mounted on the rigid frame (1.1).

9. The mine roadway cement concrete mixer truck according to claim 1, characterized in that, The aggregate bin system (3) is equipped with a weighing sensor (3.3).

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