Washing system for heading machine and cutting type open caisson heading machine

Abstract

The utility model discloses a scouring system for a heading machine and a cutting type open caisson heading machine. Comprising a driving mechanism, a cutting assembly connected with the output end of the driving mechanism and used for cutting operation, a deslagging box communicated with the deslagging end of a tunneling assembly, and a deslagging pump communicated with the deslagging end of the deslagging box. The screening structure is arranged between the slag discharging end of the cutting assembly and the slag feeding end of the slag discharging box body and is used for preventing large-particle-size slag blocks from entering the slag discharging box body; and the washing assembly is provided with at least three washing pipes so as to respectively correspond to the driving mechanism, the cutting assembly and the deslagging box body, and is used for respectively washing the driving mechanism, the cutting assembly and the deslagging box body. Cutting operation is conducted through cooperation of the driving mechanism and the cutting assembly, then the possibility that the deslagging box body and the deslagging pump are blocked is reduced to the maximum extent through the deslagging box body, the deslagging pump, the screening structure and the scouring assembly, deslagging is rapid, cutting operation is continuous and smooth, the construction progress is fast, practicability is high, and the device is suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring machines, in particular to a flushing system for tunnel boring machines. In addition, the utility model also relates to a cutting type caisson tunnel boring machine comprising the flushing system for tunnel boring machines. Background Art

[0002] The cutting type caisson boring machine is a kind of boring equipment specially used for caisson construction. It has the characteristics of high efficiency, safety and reliability. It is widely used in various underground projects and infrastructure construction, such as caisson construction of subway tunnels, underground pipe galleries, hydraulic hubs and other projects.

[0003] As the size of caissons increases, geological conditions become more complex. During the construction process, cutting-type caisson boring machines usually use cutting drums for excavation and are equipped with slag bins to collect slag, which are then discharged through submersible slurry pumps. However, when the excavation volume is too large or there are too many large-size slag blocks at the same time, the slag bins can easily be blocked and work can be stopped, seriously affecting the construction progress.

[0004] For example, Chinese invention patent CN117248910A discloses a slag discharge device for a shaft boring machine and a shaft boring machine, wherein the slag discharge device for a shaft boring machine comprises a slag suction box, a crusher and a slag discharge mechanism, wherein the slag suction box comprises a slag suction box body, a grid plate and a sealing cover, wherein the grid plate divides the interior of the slag suction box body into a crushing chamber and a slag discharge chamber, wherein a slag collecting port and a slag discharge port are provided on the slag suction box body, wherein the slag collecting port is connected to the crushing chamber, and the slag discharge port is connected to the slag discharge chamber. The sealing cover is arranged outside the slag suction box body and enclosed with the slag suction box body to form a protective chamber, wherein the crusher comprises at least two crushing rollers and a driving mechanism, wherein the crushing rollers are arranged in the crushing chamber, wherein the driving mechanism is arranged in the protective chamber and connected to the crushing rollers, and wherein the slag discharge mechanism is connected to the slag discharge port.

[0005] However, in the above-mentioned tunnel boring machine, although large-size slag blocks are crushed by setting a crushing roller in the slag suction box, the crushing roller occupies a large amount of internal space of the slag suction box, and the crushing amount of the crushing roller is easily mismatched with the slag intake of the slag suction box, resulting in excessive slag intake and blockage and shutdown of the slag suction box, which will also seriously affect the construction progress. Utility Model Content

[0006] The utility model provides a flushing system for a tunnel boring machine and a cutting type caisson tunnel boring machine, so as to solve the technical problems that the existing tunnel boring machine is easy to be blocked during slag discharge and the construction progress is slow.

[0007] According to one aspect of the utility model, a flushing system for a tunnel boring machine is provided, comprising a driving mechanism, a cutting assembly connected to an output end of the driving mechanism and used for cutting operations, a slag discharge box connected to a slag discharge end of the tunnel boring assembly, a slag discharge pump connected to the slag discharge end of the slag discharge box, a screening structure arranged between the slag discharge end of the cutting assembly and the slag inlet end of the slag discharge box and used to prevent large-size slag blocks from entering the slag discharge box, and a flushing assembly provided with at least three flushing pipes respectively arranged corresponding to the driving mechanism, the cutting assembly and the slag discharge box and used to flush the driving mechanism, the cutting assembly and the slag discharge box respectively.

[0008] As a further improvement of the above technical solution:

[0009] Furthermore, the cutting assembly includes an excavating arm and a cutting drum arranged on the movable end of the excavating arm and connected to the output end of the driving mechanism.

[0010] Furthermore, the flushing assembly includes an upper drum flushing pipe arranged on the upper end of the slag discharge box and arranged toward the cutting drum, a lower drum flushing pipe arranged on the lower end of the slag discharge box and arranged toward the cutting drum, an in-box flushing pipe extending into the slag discharge box and arranged close to the slag discharge pump, and an annular flushing pipe arranged outside the driving mechanism.

[0011] Furthermore, a plurality of flushing nozzles are provided on the annular flushing pipe, and the plurality of flushing nozzles are evenly spaced and arranged along the circumference of the annular flushing pipe and all face the driving mechanism.

[0012] Furthermore, the flushing assembly also includes a proportional regulating valve 1 arranged on the flushing pipe on the drum, a proportional regulating valve 2 arranged on the flushing pipe under the drum, and a proportional regulating valve 3 arranged on the flushing pipe in the box.

[0013] Furthermore, the flushing component also includes two pressure sensors respectively arranged on the inlet and outlet pipelines of the slag discharge pump, and a controller 1 respectively electrically connected to proportional control valve 1, proportional control valve 2, proportional control valve 3 and the two pressure sensors.

[0014] Furthermore, the flushing assembly also includes a water supply pipe connected to the annular flushing pipe and a proportional regulating valve four arranged on the water supply pipe.

[0015] Furthermore, the flushing component also includes a temperature sensor arranged on the driving mechanism and a controller 2 electrically connected to the temperature sensor and the proportional control valve 4 respectively.

[0016] Furthermore, the screening structure is a grid arranged in an arc shape.

[0017] According to another aspect of the utility model, a cutting-type caisson boring machine is also provided, which includes the above-mentioned flushing system for the boring machine.

[0018] The utility model has the following beneficial effects:

[0019] The flushing system for a tunnel boring machine of the utility model drives the cutting component to work through a driving mechanism, so as to cut the soil layer to form slag through the cutting operation, and prevents large-sized slag from entering the slag discharge box through a screening structure, thereby blocking the slag discharge box or the slag discharge pump, and flushes the slag discharge box through the flushing component to further reduce the possibility of blockage of the slag discharge box and ensure the continuous and smooth slag discharge operation, and the large-sized slag continues to be cut by the cutting component and becomes small-sized slag, and the working end of the cutting component needs to cut the large-sized slag while cutting the soil layer, and because the large-sized slag does not enter the slag discharge box in the first time, the slag may cover the driving mechanism, causing the temperature of the driving mechanism to be too high and unable to Working, at this time, the cutting component and the driving mechanism are flushed respectively through the flushing component to reduce the cutting difficulty of the cutting component, and the slag covering the outer wall of the driving mechanism is removed to ensure the continuity and smoothness of the cutting operation. The small-size slag passes through the screening structure into the slag discharge box, and is then discharged through the slag discharge pump. Compared with the prior art, this scheme performs the cutting operation through the cooperation of the driving mechanism and the cutting component, and then the slag discharge box, the slag discharge pump, the screening structure and the flushing component cooperate to minimize the possibility of the slag discharge box and the slag discharge pump being blocked. Compared with the prior art, the slag discharge is rapid, the cutting operation is continuous and smooth, the construction progress is fast, the practicability is strong, and it is suitable for wide promotion and application.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a flushing system for a tunnel boring machine according to a preferred embodiment of the utility model.

[0023] Legend:

[0024] 10. Driving mechanism; 21. Excavation arm; 22. Cutting drum; 30. Slag discharge box; 40. Slag discharge pump; 50. Screening structure; 61. Upper flushing pipe of the drum; 62. Lower flushing pipe of the drum; 63. Flushing pipe in the box; 64. Annular flushing pipe; 65. Pressure sensor. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0026] like Figure 1 As shown, the flushing system for the tunnel boring machine of this embodiment includes a driving mechanism 10, a cutting assembly for cutting operation connected to the output end of the driving mechanism 10, a slag box 30 connected to the slag discharge end of the tunneling assembly, a slag pump 40 connected to the slag discharge end of the slag discharge box 30, a screening structure 50 arranged between the slag discharge end of the cutting assembly and the slag inlet end of the slag discharge box 30 to prevent large-size slag blocks from entering the slag discharge box 30, and a flushing assembly provided with at least three flushing pipes arranged corresponding to the driving mechanism 10, the cutting assembly and the slag discharge box 30 for flushing the driving mechanism 10, the cutting assembly and the slag discharge box 30 respectively. Optionally, the driving mechanism 10 is a servo motor, and the cutting assembly is connected to the output shaft of the servo motor. Optionally, the slag pump 40 is a submersible slurry pump.

[0027] like Figure 1 As shown, specifically, the flushing system for a tunnel boring machine of the utility model drives the cutting assembly to work through the driving mechanism 10, so as to cut the soil layer through the cutting operation to form slag, and prevents large-sized slag from entering the slag box 30 through the screening structure 50, thereby blocking the slag box 30 or the slag pump 40, and flushes the slag box 30 through the flushing assembly to further reduce the possibility of blockage of the slag box 30, thereby ensuring the continuous and smooth slag discharge operation, and the large-sized slag continues to be cut by the cutting assembly and becomes small-sized slag. The working end of the cutting assembly needs to cut the large-sized slag while cutting the soil layer, and because the large-sized slag does not enter the slag box 30 in the first time, the slag may cover the driving mechanism 10, causing the temperature of the driving mechanism 10 to be too high And it cannot work. At this time, the cutting component and the driving mechanism 10 are flushed separately through the flushing component to reduce the cutting difficulty of the cutting component, and the slag covering the outer wall of the driving mechanism 10 is removed to ensure the continuity and smoothness of the cutting operation. The small-size slag passes through the screening structure 50 and enters the slag discharge box 30, and is then discharged through the slag discharge pump 40. Compared with the prior art, this scheme performs the cutting operation through the cooperation of the driving mechanism 10 and the cutting component, and then the slag discharge box 30, the slag discharge pump 40, the screening structure 50 and the flushing component cooperate to minimize the possibility of the slag discharge box 30 and the slag discharge pump 40 being blocked. Compared with the prior art, the slag discharge is rapid, the cutting operation is continuous and smooth, the construction progress is fast, the practicability is strong, and it is suitable for wide promotion and application.

[0028] like Figure 1 As shown, in this embodiment, the cutting assembly includes an excavation arm 21 and a cutting drum 22 arranged on the movable end of the excavation arm 21 and connected to the output end of the driving mechanism 10. Specifically, the excavation arm 21 drives the cutting drum 22 to move close to the soil layer, and then the driving mechanism 10 drives the cutting drum 22 to rotate to cut the soil layer, thereby performing the cutting operation.

[0029] like Figure 1 As shown, in this embodiment, the flushing assembly includes an upper drum flushing pipe 61 arranged on the upper end of the slag discharge box 30 and arranged toward the cutting drum 22, a lower drum flushing pipe 62 arranged on the lower end of the slag discharge box 30 and arranged toward the cutting drum 22, an in-box flushing pipe 63 extending into the slag discharge box 30 and arranged close to the slag discharge pump 40, and an annular flushing pipe 64 arranged outside the driving mechanism 10. Specifically, the slag box 30 is flushed through the flushing pipe 63 in the box to prevent the slag box 30 from being blocked, the top and bottom cutters of the cutting drum 22 are flushed respectively through the upper flushing pipe 61 and the lower flushing pipe 62 to reduce the difficulty of cutting, and the drive mechanism 10 is flushed through the annular flushing pipe 64 to remove the slag covering the drive mechanism 10 to ensure stable operation of the drive mechanism 10, that is, the flushing is carried out in sections through the upper flushing pipe 61, the lower flushing pipe 62, the flushing pipe 63 in the box and the annular flushing pipe 64 to ensure continuous and smooth cutting and slag discharge operations.

[0030] In this embodiment, a plurality of flushing nozzles are provided on the annular flushing pipe 64, and the plurality of flushing nozzles are evenly spaced and arranged along the circumference of the annular flushing pipe 64 and all face the driving mechanism 10. Specifically, the driving mechanism 10 is evenly flushed by the plurality of flushing nozzles to improve the flushing efficiency.

[0031] In this embodiment, the flushing assembly further includes a proportional regulating valve 1 arranged on the flushing pipe 61 on the drum, a proportional regulating valve 2 arranged on the flushing pipe 62 under the drum, and a proportional regulating valve 3 arranged on the flushing pipe 63 in the box. Specifically, the flow of the flushing pipe 61 on the drum is adjusted in real time by the proportional regulating valve 1, the flow of the flushing pipe 62 under the drum is adjusted in real time by the proportional regulating valve 2, and the flushing pipe 63 in the box is adjusted in real time by the proportional regulating valve 3. Optionally, a flow meter 1 is arranged on the flushing pipe 61 on the drum to display the flow of the flushing pipe 61 on the drum in real time. Optionally, a flow meter 2 is arranged on the flushing pipe 62 under the drum to display the flow of the flushing pipe 62 under the drum in real time. Optionally, a flow meter 3 is arranged on the flushing pipe 63 in the box to display the flow of the flushing pipe 63 in the box in real time.

[0032] like Figure 1As shown, in this embodiment, the flushing assembly also includes two pressure sensors 65 respectively arranged on the inlet and outlet pipelines of the slag discharge pump 40, and a controller 1 electrically connected to the proportional regulating valve 1, the proportional regulating valve 2, the proportional regulating valve 3 and the two pressure sensors 65. Specifically, the pressures on the inlet and outlet pipelines of the slag discharge pump 40 are respectively detected in real time by the two pressure sensors 65. When the slag is discharged normally, the pressures of the inlet and outlet pipelines are normal. The two pressure sensors 65 transmit the pressure detection signals to the controller 1. The controller 1 controls the proportional regulating valve 1, the proportional regulating valve 2 and the proportional regulating valve 3 to close, thereby closing the flushing pipe 61 on the drum, the flushing pipe 62 under the drum and the flushing pipe 63 in the box. When the instantaneous slag discharge volume is too large or large-sized slag enters the slag discharge box 30 and may cause a blockage, the inlet and outlet pipes If the pressure of the circuit is abnormal, the two pressure sensors 65 transmit the pressure detection signal to the controller 1, and the controller 1 controls the proportional regulating valve 1, proportional regulating valve 2, and proportional regulating valve 3 to open, thereby opening the upper flushing pipe 61 of the drum, the lower flushing pipe 62 of the drum, and the flushing pipe 63 in the box, so as to flush the cutting drum 22 and the slag box 30 in time to prevent blockage, that is, under the cooperation of the controller 1 and the two pressure sensors 65, the pressure automatic detection feedback and automatic control are realized, and the response processing can be timely to prevent the slag box 30 from being blocked. Optionally, the controller 1 is a PLC controller.

[0033] In this embodiment, the flushing assembly further includes a water supply pipe connected to the annular flushing pipe 64 and a proportional regulating valve 4 arranged on the water supply pipe. Specifically, flushing water is introduced into the annular flushing pipe 64 through the water supply pipe, and the flow of the water supply pipe is adjusted by the proportional regulating valve 4, thereby adjusting the flow of the annular flushing pipe 64.

[0034] In this embodiment, the flushing assembly also includes a temperature sensor arranged on the drive mechanism 10 and a controller 2 electrically connected to the temperature sensor and the proportional control valve 4 respectively. Specifically, during the cutting operation, the slag will cover the drive mechanism 10, resulting in insufficient heat dissipation of the drive mechanism 10 and a high temperature alarm. The temperature of the drive mechanism 10 is detected by the temperature sensor. When the temperature of the drive mechanism 10 reaches the warning value, the controller 2 controls the proportional control valve 4 to open, so that the water supply pipe and the annular flushing pipe 64 are opened, thereby flushing the drive mechanism 10 and removing the slag on the drive mechanism 10. After the temperature of the drive mechanism 10 returns to normal, the controller 2 controls the proportional control valve 4 to close, and then closes the water supply pipe. That is, through the cooperation of the temperature sensor and the controller 2, automatic temperature detection feedback and automatic control are realized, and timely response processing can be achieved to ensure the normal operation of the drive mechanism 10. Optionally, the controller 2 is a PLC controller.

[0035] like Figure 1As shown, in this embodiment, the screening structure 50 is a grille arranged in an arc shape. Specifically, the arc-shaped grille is matched with the slag discharge end of the cutting drum 22 to prevent large-size slag from entering the slag discharge box 30 to the greatest extent.

[0036] The cutting type caisson boring machine of this embodiment includes the above-mentioned flushing system for boring machine. Specifically, by using the above-mentioned flushing system for boring machine in the cutting type caisson boring machine, it is ensured that the slag is discharged quickly, the cutting operation is continuous and smooth, and the construction progress is fast.

[0037] Optionally, the cutting caisson boring machine also includes a swivel joint and a pipeline extension device, and the upper drum flushing pipe 61, the lower drum flushing pipe 62 and the flushing pipe 63 in the box body are connected to the outlet of the ground flushing pump through the excavation arm 21, the swivel joint and the pipeline extension device.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flushing system for a roadheader, characterized in that: The invention comprises a driving mechanism (10), a cutting assembly connected to the output end of the driving mechanism (10) and used for cutting operations, a slag discharge box (30) connected to the slag discharge end of the excavation assembly, a slag discharge pump (40) connected to the slag discharge end of the slag discharge box (30), a screening structure (50) arranged between the slag discharge end of the cutting assembly and the slag inlet end of the slag discharge box (30) and used to prevent large-size slag blocks from entering the slag discharge box (30), and a flushing assembly provided with at least three flushing pipes respectively arranged corresponding to the driving mechanism (10), the cutting assembly and the slag discharge box (30) and used to flush the driving mechanism (10), the cutting assembly and the slag discharge box (30).

2. The flushing system for a roadheader according to claim 1, characterized in that: The cutting assembly comprises an excavating arm (21) and a cutting drum (22) arranged on the movable end of the excavating arm (21) and connected to the output end of the driving mechanism (10).

3. The flushing system for a roadheader according to claim 2, characterized in that: The flushing assembly comprises an upper drum flushing pipe (61) arranged on the upper end of the slag discharge box (30) and arranged toward the cutting drum (22), a lower drum flushing pipe (62) arranged on the lower end of the slag discharge box (30) and arranged toward the cutting drum (22), an in-box flushing pipe (63) extending into the slag discharge box (30) and arranged close to the slag discharge pump (40), and an annular flushing pipe (64) arranged outside the driving mechanism (10).

4. The flushing system for a roadheader according to claim 3, characterized in that: A plurality of flushing nozzles are provided on the annular flushing pipe (64), and the plurality of flushing nozzles are evenly spaced and arranged along the circumference of the annular flushing pipe (64) and all face the driving mechanism (10).

5. The flushing system for a roadheader according to claim 3, characterized in that: The flushing assembly also includes a proportional regulating valve 1 arranged on the flushing pipe (61) on the drum, a proportional regulating valve 2 arranged on the flushing pipe (62) under the drum, and a proportional regulating valve 3 arranged on the flushing pipe (63) in the box.

6. The flushing system for a roadheader according to claim 5, characterized in that: The flushing assembly also includes two pressure sensors (65) respectively arranged on the inlet and outlet pipelines of the slag discharge pump (40), and a controller 1 electrically connected to the proportional control valve 1, the proportional control valve 2, the proportional control valve 3 and the two pressure sensors (65).

7. The flushing system for a roadheader according to claim 3, characterized in that: The flushing assembly also includes a water supply pipe connected to the annular flushing pipe (64) and a proportional regulating valve 4 arranged on the water supply pipe.

8. The flushing system for a roadheader according to claim 7, characterized in that: The flushing component also includes a temperature sensor arranged on the driving mechanism (10) and a controller 2 electrically connected to the temperature sensor and the proportional regulating valve 4 respectively.

9. The flushing system for a roadheader according to any one of claims 1 to 8, characterized in that: The screening structure (50) is a grid arranged in an arc shape.

10. A cutting type caisson boring machine, characterized in that: A flushing system for a tunnel boring machine comprising any one of claims 1-9.

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