A shield machine belt conveying device capable of processing water-containing muck and a muck accurate weighing method

Abstract

The invention discloses a shield machine belt conveying device capable of processing liquid slag, which is characterized in that a scale type belt conveying mechanism is arranged on a support system, the scale type belt conveying mechanism rotates to transport the slag, a vibration filtering device is arranged at the right end of the support system, the vibration filtering device is located directly below the scale type belt conveying mechanism, a water collection and weighing device is arranged below the vibration filtering device, and a plurality of groups of high-pressure spraying devices are arranged below the scale type belt conveying mechanism, the high-pressure water flow sprayed by the high-pressure spraying devices acts on the scale type belt conveying mechanism, and an accurate weighing method of the slag is provided, the invention can meet the requirements of efficient transportation and accurate weighing of the liquid slag in the shield tunnel construction, significantly improve the shield construction efficiency of the liquid slag working condition, reduce the workload of the on-site personnel and the equipment failure rate, and keep the shield tunnel construction environment clean and tidy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shield tunnel construction, and particularly relates to a shield machine belt conveying device capable of processing water-containing muck and a muck accurate weighing method. BACKGROUND

[0002] In recent years, with the rapid development of China's transportation construction, the shield method has been widely applied as an efficient, safe and advanced construction method. The common earth pressure balance shield machine transports the muck generated at the excavation face to the rear muck car through a belt conveying device. At present, the surface of the shield machine conveying belt is smooth rubber, which is suitable for muck with low water content. When the muck is in a flowable plastic state or gushing state with high water content, it is called liquid muck. The smooth surface cannot transport the liquid muck upward, and only continuously falls and accumulates in the tunnel at the starting position, which not only occupies the space for the on-site personnel to operate, but also pollutes the segments and shield equipment. The on-site personnel need to manually clean the scattered muck in the narrow operating space before the next operation, which seriously affects the construction efficiency and greatly increases the work burden of the on-site personnel and the failure rate of the equipment. In addition, the existing shield machine muck weighing schemes include manual measurement, tonnage measurement and flow measurement. However, these traditional measurement methods have some drawbacks, which limit the accurate measurement of the shield tunneling muck. Therefore, some scholars have improved the weighing method, such as a new type of gantry crane weighing structure to realize accurate measurement of muck, and a suspended weighing bridge, but these methods cannot consider the influence of residual muck on the belt and the water content in the liquid muck, so the weight of the muck obtained is far different from the weight of the solid components in the liquid muck, which cannot effectively guide the on-site construction and aggravate the ground uplift or settlement. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, provide a shield machine belt conveying device capable of processing liquid muck, which is reasonable in design, can meet the needs of efficient transportation and accurate weighing of liquid muck in shield tunnel construction, significantly improve the construction efficiency of liquid muck working conditions, reduce the work load of on-site personnel and the failure rate of equipment, and keep the shield tunnel construction environment clean and tidy, and provide a method for accurately weighing muck using the same.

[0004] The technical solution adopted to solve the above technical problems is: a shield machine belt conveying device capable of processing liquid muck, a scale type belt conveying mechanism is arranged on a support system, the scale type belt conveying mechanism rotates to transport muck, a vibration filtering device is arranged at the right end of the support system, the vibration filtering device is located directly below the scale type belt conveying mechanism, a water collection and weighing device is arranged below the vibration filtering device, and a plurality of groups of high-pressure spraying devices are arranged below the scale type belt conveying mechanism, the high-pressure water flow sprayed by the high-pressure spraying devices acts on the scale type belt conveying mechanism.

[0005] The scale type belt conveying mechanism of the application is characterized in that the belt body is provided with a left transmission wheel and a right transmission wheel, the left transmission wheel and the right transmission wheel are arranged on the two side arms of the support system, a double-shaft motor, an upper middle transmission wheel and a lower middle transmission wheel are arranged on the middle support of the support system, one output shaft of the double-shaft motor is connected with the lower middle transmission wheel through a first belt, and the other output shaft is connected with the upper middle transmission wheel through a second belt, the upper middle transmission wheel rotates clockwise to drive the belt body to rotate, and the lower middle transmission wheel rotates counterclockwise, the upper two sides of the belt body are provided with mudguards, a plurality of groups of scale plates are arranged between the mudguards, the scale plates are arranged obliquely to the belt body, and elastic side belts are arranged between the two sides of the scale plates and the belt body.

[0006] The opening direction of the scale plate is consistent with the rotating direction of the belt body.

[0007] The high-pressure spraying device of the application is characterized in that the water inlet pipe is arranged on the support system, a plurality of spraying heads are arranged radially on the outer circumference of the water inlet pipe, and the spraying direction of the spraying heads is opposite to the opening direction of the scale plates.

[0008] The vibration filtering device of the application is characterized in that the driving motor is arranged on the side arm of the support system, the output shaft of the driving motor is connected with the filtering driving transmission wheel through a third belt, the filtering driving transmission wheel and the filtering driven transmission wheel are arranged on the support system and are provided with a filtering steel belt, and filtering baffle plates are arranged on the two sides of the filtering steel belt.

[0009] The filtering steel belt of the application is a controllable opening and closing hole type filtering structure.

[0010] The cross-sectional shape of the filtering driven transmission wheel is a regular polygon structure.

[0011] The water collection and weighing device of the application is characterized in that the water storage tank is arranged directly below the filtering vibration device, a high-precision weighing sensor is arranged in the water storage tank, and a drain pipe (3-2) is arranged at the lower part of the water storage tank.

[0012] The right end of the scale type belt conveying mechanism of the application is higher than the left end.

[0013] The slag accurate weighing method of the shield machine belt conveying device capable of treating liquid slag soil provided by the application comprises the following steps:

[0014] S1, device installation: assemble the scale type belt conveying mechanism, the vibration filtering device, the water collection and weighing device, the high-pressure spraying device and the support system.

[0015] S2, liquid slag transportation: when the liquid slag comes out of the spiral conveyor, the opening space formed by the scale plate and the belt body can store the liquid slag, at this time, the double-shaft motor is started to rotate the belt body clockwise to transport the liquid slag to the high and rear in batches;

[0016] S3, liquid slag transfer: when the liquid slag carried by the scale belt conveying mechanism reaches above the vibration filtering device, the vibration filtering device closes the filtering hole, and a batch of liquid slag is poured onto the vibration filtering device as the scale belt conveying mechanism rotates;

[0017] S4, scale belt flushing: after the scale belt conveying mechanism rotates and pours the liquid slag, the high-pressure spraying device is started to flush the residual slag on the scale belt conveying mechanism, and the slag-water mixture is also poured onto the closed vibration filtering device, at this time, the total mass of the liquid slag is collected by the high-precision weighing sensor arranged on the vibration filtering device;

[0018] S5, solid-liquid separation and pouring of the slag: after the scale belt conveying mechanism is flushed, the filtering hole is opened, and the driving motor is started to make the water in the liquid slag flow into the water collection weighing device below through vibration, realizing the solid-liquid separation of the liquid slag, and the vibration filtering device rotates to pour all the slag on it into the slag car;

[0019] S6, slag weight calculation: when all the slag on the vibration filtering device falls into the slag car, the weight of the water in the water storage tank is collected by the high-precision weighing sensor arranged on both sides of the water storage tank, at this time, the weight of the slag after solid-liquid separation in one operation process is calculated;

[0020] S7, cycle the above process, all the slag generated by the tunnel boring machine in one ring segment length is conveyed into the slag car, the weight of the slag recorded in each cycle is accumulated to obtain the final slag weight, and the water collected in the water storage tank is discharged through the drain pipe below.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] (1) Compared with the smooth conveying belt matched with the present stage shield machine, the present application adopts the scale belt, and through the setting that the opening direction of the scale plate is consistent with the rotation direction of the scale belt transmission mechanism, the backflow of the liquid slag can be prevented, thereby significantly improving the transportation capacity of the liquid slag.

[0023] (2) The scale plate of the present application can be opened and closed, and cooperates with the counterclockwise rotating middle lower transmission wheel to realize the natural closing of the scale plate and the elastic edge belt.

[0024] (3) The present application can avoid liquid slag to be scattered and accumulated at the starting position, so as to keep the tunnel working environment clean, reduce the slag cleaning process, reduce the working strength of the site personnel, and improve the tunneling efficiency.

[0025] (4) The vibration filtering device with a regular polygon transmission shaft adopted by the present application can effectively realize the solid-liquid separation of the liquid slag, reduce the space occupation of the water in the liquid slag to the slag car, and create conditions for accurate weighing of the liquid slag.

[0026] (5) The present application adopts a filter belt with controllable opening and closing holes, which can accurately control the solid-liquid separation of the liquid slag.

[0027] (6) The accurate weighing method of the liquid slag proposed by the present application not only considers the weight of the residual slag of the scale type belt, but also excludes the weight of the water in the liquid slag, so as to simply and accurately calculate the weight of the solid component in the liquid slag. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the present application.

[0029] Figures 2 to 5 is Figure 1 a structural schematic diagram of the scale type belt conveying mechanism 1 in the present application.

[0030] Figure 6 , Figure 7 is a structural schematic diagram of the vibration filtering device 2, the water collecting and weighing device 3, and the high-pressure spraying device 4 in the figure.

[0031] In the figure: 1, scale type belt conveying mechanism; 2, vibration filtering device; 3, water collecting and weighing device; 4, high-pressure spraying device; 5, support system; 1-1, scale plate; 1-2, elastic side belt; 1-3, mud guard; 1-4, belt body; 1-5, left rotating wheel; 1-6, middle upper transmission wheel; 1-7, middle lower transmission wheel; 1-8, double-shaft motor; 1-9, first belt; 1-10, second belt; 1-11, right side transmission wheel; 2-1, filter steel belt; 2-2, filter baffle; 2-3, filter driving transmission wheel; 2-4, filter driven transmission wheel; 2-5, driving motor; 2-6, third belt; 3-1, water storage tank; 3-2, drain pipe; 4-1, water inlet pipe; 4-2, spraying head. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below in combination with the drawings and examples, but the present application is not limited to these examples.

[0033] Example 1

[0034] In Figures 1 to 7The present application relates to a shield machine belt conveying device capable of handling liquid sludge, which is arranged below a screw conveyor. The sludge conveyed by the screw conveyor falls on the upper left part of the device. Specifically, a scale type belt conveying mechanism 1 is arranged on a support system 5. The scale type belt conveying mechanism 1 rotates to transport the sludge. In this embodiment, the scale type belt conveying mechanism 1 is connected by scale plates 1-1, elastic side belts 1-2, mudguards 1-3, a belt body 1-4, a left rotating wheel 1-5, a middle upper transmission wheel 1-6, a middle lower transmission wheel 1-7, a double-shaft motor 1-8, a first belt 1-9, a second belt 1-10, and a right transmission wheel 1-11. The belt body 1-4 is provided with the left transmission wheel 1-5 and the right transmission wheel 1-11. The left transmission wheel 1-5 and the right transmission wheel 1-11 are driven wheels. The left transmission wheel 1-5 and the right transmission wheel 1-11 are arranged on the arms on both sides of the support system 5. The double-shaft motor 1-8, the middle upper transmission wheel 1-6, and the middle lower transmission wheel 1-7 are arranged on a middle support 5-1 of the support system 5. One output shaft of the double-shaft motor 1-8 is connected to the middle lower transmission wheel 1-7 through the first belt 1-9, and the other output shaft is connected to the middle upper transmission wheel 1-6 through the second belt 1-10. The middle upper transmission wheel 1-6 is a driving wheel that rotates clockwise and drives the belt body 1-4 to rotate. The middle lower transmission wheel 1-7 rotates counterclockwise and provides an upward restraining force for the belt body 1-4. The counterclockwise rotation also enables the scale plates 1-1 and the elastic side belts 1-2 to close.

[0035] The right end of the support system 5 is provided with a vibrating filtering device 2, which is located directly below the scale type belt conveying mechanism 1, and is connected by a filtering steel belt 2-1, a filtering baffle 2-2, a filtering driving wheel 2-3, a filtering driven wheel 2-4, a driving motor 2-5 and a third belt 2-6. The driving motor 2-5 is arranged on the side arm of the support system 5, and the output shaft of the driving motor 2-5 is connected with the filtering driving wheel 2-3 through the third belt 2-6. The filtering driving wheel 2-3 and the filtering driven wheel 2-4 are arranged on the support system 5 and provided with the filtering steel belt 2-1. The filtering baffle 2-2 is arranged on both sides of the filtering steel belt 2-1, which prevents the liquid slag from sliding down when vibrating. The filtering steel belt 2-1 is a controllable opening and closing hole type filtering structure, which is used for liquid slag solid-liquid separation. The cross-sectional shape of the filtering driven wheel 2-4 is a regular polygon structure. When rotating, the filtering steel belt 2-1 vibrates due to the shape, so as to achieve the purpose of rapid and efficient separation of liquid slag. The dry slag with water is slid along the filtering steel belt 2-1 and falls into the slag car. The filtering driving wheel 2-3 and the filtering driven wheel 2-4 are provided with high-precision weighing sensors, which can accurately collect the weight of the slag on the filtering steel belt 2-1.

[0036] A plurality of groups of high-pressure spraying devices 4 are arranged below the scale type belt conveying mechanism 1. The high-pressure water flow sprayed by the high-pressure spraying devices 4 acts on the scale type belt conveying mechanism 1. Further, the high-pressure spraying device 4 is connected by a water inlet pipe 4-1 and a spraying head 4-2. The water inlet pipe 4-1 is arranged on the support system 5, and the spraying head 4-2 is arranged radially on the outer circumference of the water inlet pipe 4-1. The spraying direction of the spraying head 4-2 is opposite to the opening direction of the scale plate 1-1. The residual liquid slag in the space of the scale plate 1-1 is flushed out by the impact force of the high-pressure water and falls onto the vibrating filtering device 2. The water collecting and weighing device 3 is arranged below the vibrating filtering device 2. The water collecting and weighing device 3 is connected by a water storage tank 3-1 and a drain pipe 3-2. The water storage tank 3-1 is arranged directly below the filtering vibrating device 2 and collects the water separated from the liquid slag. The water storage tank 3-1 is provided with a high-precision weighing sensor inside, which is used to measure the weight of the separated water. The lower part of the water storage tank 3-1 is provided with a drain pipe 3-2. After a ring pipe piece is excavated, the liquid in the water storage tank 3-1 is discharged through the drain pipe 3-2 below, and is collected and treated by the water pump of the shield tunneling machine.

[0037] The above-mentioned method for accurately weighing the slag of the shield tunneling machine belt conveying device capable of treating liquid slag includes the following steps:

[0038] S1, device installation: assemble the scale type belt conveying mechanism 1, the vibrating filtering device 2, the water collecting and weighing device 3, the high-pressure spraying device 4 and the support system 5.

[0039] S2, liquid slag transportation: when the liquid slag comes out of the screw conveyor, the opening space formed by the scale plate 1-1 and the belt body 1-4 can store the liquid slag, at this time, the double-shaft motor 1-8 is started to rotate the belt body 1-4 clockwise, and the liquid slag is transported to the high and rear in batches;

[0040] S3, liquid slag transfer: when the liquid slag carried by the scale belt conveying mechanism 1 reaches above the vibration filtering device 2, the vibration filtering device 2 closes the filtering hole, and a batch of liquid slag is poured onto the vibration filtering device 2 as the scale belt conveying mechanism 1 rotates;

[0041] S4, scale belt flushing: after the scale belt conveying mechanism 1 rotates and pours the liquid slag, the high-pressure spraying device 4 is started to flush the residual slag on the scale belt conveying mechanism 1, and the slag-water mixture is also poured on the closed vibration filtering device 2, at this time, the total mass m1 of the liquid slag is collected by the high-precision weighing sensor arranged on the vibration filtering device 2;

[0042] S5, solid-liquid separation and pouring of slag: after the scale belt conveying mechanism 1 is flushed, the filtering hole is opened, the driving motor 2-5 is started, and the water in the liquid slag flows into the water collection weighing device 3 below through vibration, realizing the solid-liquid separation of the liquid slag, and at the same time, the vibration filtering device 2 rotates to pour all the slag on it into the slag car; Since the vibration will interfere with the precision of the high-precision weighing sensor arranged in the transmission shaft 2-3 and the vibration shaft 2-4, the weighing sensor stops working after the driving motor 2-5 is started.

[0043] S6, slag weight calculation: when all the slag on the vibration filtering device 2 falls into the slag car, the weight m2 of the water in the water storage tank 3-1 is collected by the high-precision weighing sensor arranged on both sides of the water storage tank 3-1, at this time, the weight M of the slag after solid-liquid separation in one operation process is calculated i =m1-m2;

[0044] S7, cycle the above process, and all the slag produced by each shield tunneling a ring segment length is conveyed to the slag car, and the weight of the slag recorded in each cycle is accumulated to obtain the final slag weight M=∑M i , and the water collected in the water storage tank 3-1 is discharged through the drain pipe 3-2 below.

Claims

1. A shield tunneling machine belt conveyor capable of handling liquid slag, characterized in that: A scale-type belt conveyor (1) is installed on the support system (5). The scale-type belt conveyor (1) rotates to transport slag. A vibration filter device (2) is installed at the right end of the support system (5). The vibration filter device (2) is located directly below the scale-type belt conveyor (1). A water collection and weighing device (3) is installed below the vibration filter device (2). Several sets of high-pressure spraying devices (4) are installed below the scale-type belt conveyor (1). The high-pressure water jet sprayed by the high-pressure spraying device (4) acts on the scale-type belt conveyor (1). The scale-type belt conveyor mechanism (1) is as follows: the belt body (1-4) is provided with a left drive wheel (1-5) and a right drive wheel (1-11). The left drive wheel (1-5) and the right drive wheel (1-11) are located on the two arms of the support system (5). The middle bracket (5-1) of the support system (5) is provided with a dual-axis motor (1-8), a middle upper drive wheel (1-6), and a middle lower drive wheel (1-7). One output shaft of the dual-axis motor (1-8) is connected to the middle lower drive wheel (1-7) through a first belt (1-9), and the other... The output shaft is connected to the upper drive wheel (1-6) in the middle via the second belt (1-10). The upper drive wheel (1-6) in the middle rotates clockwise and drives the belt body (1-4) to rotate. The lower drive wheel (1-7) in the middle rotates counterclockwise. Mudguards (1-3) are provided on both sides of the upper part of the belt body (1-4). Several sets of scale plates (1-1) are provided between the mudguards (1-3). The scale plates (1-1) are inclined to the belt body (1-4). Elastic side belts (1-2) are provided between the scale plates (1-1) and the belt body (1-4). The vibration filtering device (2) is as follows: a drive motor (2-5) is mounted on the side arm of the support system (5), the output shaft of the drive motor (2-5) is connected to the filter drive wheel (2-3) through a third belt (2-6), the filter drive wheel (2-3) and the filter driven wheel (2-4) are mounted on the support system (5) and a filter steel belt (2-1) is provided, and filter baffles (2-2) are provided on both sides of the filter steel belt (2-1); The cross-sectional shape of the filter driven drive wheel (2-4) is a regular polygonal structure.

2. The shield machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that: The opening direction of the scale plate (1-1) is consistent with the rotation direction of the belt body (1-4).

3. A shield tunneling machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that... The high-pressure spray device (4) is as follows: the water inlet pipe (4-1) is set on the support system (5), and the spray head (4-2) is radially arranged on the outer circumference of the water inlet pipe (4-1). The spray direction of the spray head (4-2) is opposite to the opening direction of the scale plate (1-1).

4. A shield tunneling machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that: The filter steel belt (2-1) is a filter structure with controllable opening and closing holes.

5. A shield tunneling machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that... The water collection and weighing device (3) is as follows: a water storage tank (3-1) is located directly below the vibration filter device (2), a high-precision weighing sensor is installed inside the water storage tank (3-1), and a drain pipe (3-2) is installed at the bottom of the water storage tank (3-1).

6. A shield tunneling machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that: The scale-type belt conveyor (1) is positioned with its right end higher than its left end.

7. The method for accurately weighing slag in a tunnel boring machine belt conveyor device capable of handling liquid slag as described in claim 1, characterized in that... Includes the following steps: S1. Installation: Assemble the scale belt conveyor (1), vibration filter (2), water collection and weighing device (3), high-pressure spray device (4), and support system (5) into shape. S2. Liquid slag transportation: When the liquid slag comes out of the screw conveyor, the open space formed by the scale plate (1-1) and the belt body (1-4) can store the liquid slag. At this time, the dual-shaft motor (1-8) is started to make the belt body (1-4) rotate clockwise, and the liquid slag is transported in batches to higher and rear places. S3. Transfer of liquid slag: When the liquid slag carried by the scale belt conveyor (1) reaches the vibrating filter device (2), the vibrating filter device (2) closes the filter hole and pours a batch of liquid slag onto the vibrating filter device (2) as the scale belt conveyor (1) rotates. S4. Scale-type belt flushing: After the scale-type belt conveyor (1) has finished discharging the liquid slag, the high-pressure spray device (4) is started to flush the remaining slag on the scale-type belt conveyor (1). The slag-water mixture also falls onto the closed-pore vibration filter device (2). At this time, the total mass of the liquid slag is collected by the high-precision weighing sensor set on the vibration filter device (2). ; S5. Solid-liquid separation and dumping of slag: After the scale belt conveyor (1) is flushed, the filter hole is opened and the drive motor (2-5) is started. The water in the liquid slag flows into the water collection and weighing device (3) below through vibration, so as to achieve solid-liquid separation of liquid slag. At the same time, the vibrating filter device (2) rotates to drop all the slag on it into the slag truck. S6. Calculation of excavated soil weight: After all the excavated soil on the vibrating filter device (2) falls into the excavated soil truck, the weight of the water in the water storage tank (3-1) is collected by the high-precision weighing sensors set on both sides of the water storage tank (3-1). At this point, calculate the weight of the slag and soil after solid-liquid separation in a work process. ; S7. Repeat the above process, transferring all the excavated soil from each tunnel segment excavated by the tunnel boring machine to the dump trucks, and summing up the weight of the excavated soil recorded in each cycle to obtain the final weight of the excavated soil. The water collected in the water storage tank (3-1) is discharged through the drain pipe (3-2) below.

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