Shield machine, shield cutter for cutting reinforced concrete and control method thereof

Abstract

The present application discloses a shield machine, a shield cutter for cutting reinforced concrete, and a control method thereof, which relates to the technical field of shield equipment, and aims to solve the problem that the existing shield cutter cannot cut the steel bar in time, so that the steel bar will be wrapped around the cutter disc, resulting in difficulty in slag discharge, difficulty in rotating the cutter disc, and low excavation efficiency. It includes a cutter body and a cutter ring, the cutter ring is arranged on the periphery of the cutter body, and the cutter ring is provided with a plurality of embedding positions on its circumference. The shield cutter also includes: a plurality of special blades, which are movably arranged in the corresponding embedding positions and are used to cut the steel bar; a vibration monitor, which is arranged in the cutter body and is used to monitor the vibration of the cutter body; a telescopic mechanism, which is arranged in the cutter body and is connected to the vibration monitor, and the driving end of the telescopic mechanism is connected to the special blade; wherein, according to the vibration of the cutter body, the special blade is extended out of the cutter ring or retracted into the cutter ring by the drive of the telescopic mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of shield equipment, and in particular to a shield machine, a shield cutter for cutting reinforced concrete, and a control method thereof. Background Art

[0002] With the rapid development of urban underground space utilization, shield machines are widely used in urban underground rail transit construction. However, when shield construction is carried out in densely built-up areas in cities, it is inevitable to encounter various underground obstacles, especially reinforced concrete structures such as pile foundations and underground continuous walls. When the shield machine cuts reinforced concrete structures, the commonly used shield cutter cannot cut the steel bars in time, causing the steel bars to be entangled on the cutterhead, resulting in slag discharge difficulties, difficulty in rotating the cutterhead, and low excavation efficiency.

[0003] Therefore, the prior art still needs to be improved. Summary of the invention

[0004] The purpose of the present application is to provide a shield machine, a shield cutter for cutting reinforced concrete and a control method thereof, so as to solve the problem that the existing shield cutter cannot cut the steel bars in time, so that the steel bars are entangled on the cutter disc, resulting in slag discharge difficulties, difficulty in rotating the cutter disc and low excavation efficiency.

[0005] To achieve the above-mentioned purpose, the first aspect of the embodiment of the present application provides a shield cutter for cutting reinforced concrete, comprising a cutter body and a cutter ring, wherein the cutter ring is arranged on the periphery of the cutter body, and the cutter ring has a plurality of embedding positions on its circumference, and the shield cutter further comprises:

[0006] A plurality of special blades are movably arranged in the corresponding embedding positions and used for cutting steel bars;

[0007] A vibration monitor, which is disposed in the cutter body and is used to monitor the vibration of the cutter body;

[0008] A telescopic mechanism, which is disposed in the blade body and connected to the vibration monitor, wherein a driving end of the telescopic mechanism is connected to the special blade;

[0009] Wherein, according to the vibration of the knife body, the special blade is driven by the telescopic mechanism to extend out of the knife ring or retract into the knife ring.

[0010] According to the shield cutter for cutting reinforced concrete described above, the telescopic mechanism comprises:

[0011] A rotating motor is disposed in the knife ring and connected to the vibration monitor;

[0012] A driving gear, which is arranged on the driving end of the rotating motor;

[0013] A plurality of transmission gears are rotatably disposed in the knife ring and are located at the outer periphery of the driving gear, and the transmission gears are meshed with the driving gears;

[0014] A plurality of racks have one end meshed with the corresponding transmission gear and the other end detachably connected with the corresponding special blade.

[0015] According to the shield cutter for cutting reinforced concrete described above, a plurality of transmission gears are evenly distributed on the outer periphery of the driving gear.

[0016] According to the shield cutter for cutting reinforced concrete described above, the cutter ring comprises:

[0017] A first half knife ring, which is fixedly arranged on one side of the periphery of the knife body;

[0018] The second half knife ring is arranged on the other side of the periphery of the knife body and is detachably connected to the knife body.

[0019] According to the above-mentioned shield cutter for cutting reinforced concrete, the shield cutter also includes:

[0020] A microcontroller, whose input end is connected to the vibration monitor, and whose output end is connected to the telescopic mechanism. The microcontroller is used to control the telescopic mechanism to drive the special blade to extend out of the knife ring or retract into the knife ring.

[0021] According to the above-mentioned shield cutter for cutting reinforced concrete, the shield cutter also includes:

[0022] The remote controller has an output terminal connected to the microcontroller.

[0023] According to the shield cutter for cutting reinforced concrete described above, a plurality of the special blades are arranged at equal intervals in the cutter ring.

[0024] According to the shield cutter for cutting reinforced concrete described above, the special blade is configured as a fan-shaped steel blade.

[0025] A second aspect of an embodiment of the present application provides a shield machine, comprising a plurality of shield cutters as described above for cutting reinforced concrete.

[0026] A third aspect of the embodiment of the present application provides a control method for a shield cutter for cutting reinforced concrete, which is applied to the shield cutter for cutting reinforced concrete as described above. The control method includes:

[0027] Collecting vibration data of the shield cutter through a vibration monitor, wherein the vibration data includes the vibration amplitude and frequency of the shield cutter;

[0028] Determine whether the shield cutter needs to cut the steel bars based on the shield cutter's vibration data;

[0029] If the shield cutter needs to cut steel bars, the telescopic mechanism is driven to drive the special blade to extend out of the cutter ring.

[0030] The shield machine, the shield cutter for cutting reinforced concrete and the control method thereof provided by the present application have at least the following beneficial effects:

[0031] Under normal circumstances, the present application can drive the knife ring to rotate by the rotating knife body, thereby cutting concrete through the knife ring for shield tunneling. The present application also arranges a retractable special blade for cutting steel bars in the knife ring. When the steel bars need to be cut, the special blade is driven to extend out of the knife ring by the retractable mechanism, so as to cut the steel bars by the rotation of the knife body. It can be foreseen that the present application determines whether the steel bars or concrete need to be cut according to the vibration of the knife body. Under the monitoring of the vibration monitor, the special blade can be extended in time to cut the steel bars when encountering steel bars, so as to avoid the steel bars winding around the knife body and affecting the excavation efficiency of the shield machine, which can effectively ensure the cutting efficiency of reinforced concrete and the service life of the special blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic plan view of a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0034] Figure 2 A cross-sectional view of a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0035] Figure 3 A schematic structural diagram of a cutter ring in a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0036] Figure 4 A structural schematic diagram of the connection between a special blade and a telescopic mechanism in a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0037] Figure 5A structural schematic diagram of a special blade in a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0038] Figure 6 A structural schematic diagram of one angle of a telescopic mechanism in a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0039] Figure 7 A structural schematic diagram of another angle of the telescopic mechanism in the shield cutter for cutting reinforced concrete is provided for the embodiment of the present application.

[0040] Figure 8 A flowchart of a method for controlling a shield cutter for cutting reinforced concrete is provided for an embodiment of the present application.

[0041] Among them, the reference numerals in the figure are:

[0042] 1. Cutter body; 2. Cutter ring; 21. Embedding position; 3. Special blade; 4. Vibration monitor; 5. Telescopic mechanism; 51. Rotating motor; 52. Driving gear; 53. Transmission gear; 54. Rack; 6. Bolt; 7. Micro controller; 8. Remote controller; 9. Cutter holder. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] With the rapid development of urban underground space utilization, shield machines are widely used in urban underground rail transit construction. However, when shield construction is carried out in densely built-up areas in cities, it is inevitable to encounter various underground obstacles, especially reinforced concrete structures such as pile foundations and underground continuous walls. When the shield machine cuts reinforced concrete structures, the commonly used shield cutter cannot cut the steel bars in time, causing the steel bars to be entangled on the cutterhead, resulting in slag discharge difficulties, difficulty in rotating the cutterhead, and low excavation efficiency.

[0046] See also Figure 1 , Figure 2 and Figure 3 In a first aspect, the present embodiment provides a shield cutter for cutting reinforced concrete, comprising a cutter body 1, a cutter ring 2, a plurality of special blades 3, a vibration monitor 4 and a telescopic mechanism 5. The cutter body 1 can rotate through an external rotating mechanism. The cutter ring 2 is arranged on the periphery of the cutter body 1. The cutter ring 2 has a plurality of embedding positions 21 on its circumference. A plurality of special blades 3 are movably arranged in the corresponding embedding positions 21 and are used for cutting steel bars. The vibration monitor 4 is arranged in the cutter body 1 and is used to monitor the vibration of the cutter body 1. The telescopic mechanism 5 is arranged in the cutter body 1 and is connected to the vibration monitor 4. The driving end of the telescopic mechanism 5 is connected to the special blade 3. According to the vibration of the cutter body 1, the special blade 3 is extended out of the cutter ring 2 or retracted into the cutter ring 2 by the drive of the telescopic mechanism 5.

[0047] Among them, the vibration monitor 4 can monitor the vibration of the blade body 1 in real time, including parameters such as the amplitude, frequency, and direction of the vibration. The monitored amplitude is usually small, usually 0~5g, and the frequency is low, usually between 20Hz and 200Hz, which manifests as a relatively stable and low-frequency vibration. At this time, the concrete can be cut by driving the rotation of the blade ring 2 through the rotation of the blade body 1; when the amplitude is large, usually 5g to 20g (1g=9.8m / s2), and may even exceed 10g, and the frequency is high, usually between 100Hz and 1000Hz, which manifests as a relatively sharp and rapid shock wave, it is necessary to drive the special blade 3 to extend out of the blade ring 2 so as to drive the rotation of the special blade 3 through the rotation of the blade body 1 to cut the steel bars.

[0048] Under normal circumstances, the present embodiment can drive the knife ring 2 to rotate by the rotating knife body 1, so as to perform shield tunneling through the knife ring 2 to cut concrete. The present embodiment also provides a retractable special blade 3 for cutting steel bars in the knife ring 2. When it is necessary to cut the steel bars, the special blade 3 is driven to extend out of the knife ring 2 by the retractable mechanism 5, so as to cut the steel bars by driving the rotation of the knife body 1. It can be foreseen that the present embodiment determines whether it is necessary to cut steel bars or concrete according to the vibration of the knife body 1. Under the monitoring of the vibration monitor, the special blade 3 can be extended in time to cut the steel bars when encountering steel bars, so as to avoid the steel bars winding around the knife body 1 and affecting the tunneling efficiency of the shield machine, thereby effectively ensuring the cutting efficiency of the steel bars and concrete and the service life of the special blade 3.

[0049] Optionally, in one embodiment, the knife ring 2 includes a first half knife ring (not shown in the figure) and a second half knife ring (not shown in the figure), the first half knife ring is arranged on one side of the periphery of the knife body 1, and the second half knife ring is arranged on the other side of the periphery of the knife body 1. That is, the first half knife ring and the second half knife ring are combined to form the knife ring 2.

[0050] Among them, the knife ring 2 can be set as the first half knife ring and the second half knife ring are both fixedly set on the knife body 1, the knife ring 2 can also be set as the first half knife ring and the second half knife ring are both detachably set on the knife body 1, and the knife ring 2 can be set as one of the first half knife ring and the second half knife ring is detachably set on the knife body 1, and the other is fixedly set on the knife body 1.

[0051] Optionally, in one embodiment, the first half knife ring is fixedly connected to the knife body 1, and the second half knife ring is detachably connected to the knife body 1. In this embodiment, the knife ring 2 is arranged to be a split first half knife ring and a second half knife ring, and the first half knife ring is fixedly connected to the knife body 1, and the second half knife ring is detachably connected to the knife body 1. Compared with the method in which the first half knife ring and the second half knife ring are arranged to be both detachable or fixedly connected to the knife body 1, this embodiment can not only avoid easy confusion in the installation of the first half knife ring and the second half knife ring, but also provide a favorable environment for changing the special blade 3.

[0052] Optional, see Figure 4 and Figure 5 In one embodiment, the shape of the special blade 3 can be set to be fan-shaped, and the material of the special blade 3 can be set to be a steel blade with high-strength alloy material. The steel blade has high strength and high wear resistance, can withstand the impact when cutting steel bars, has a sharp blade, and can efficiently cut reinforced concrete.

[0053] Optionally, in one embodiment, a plurality of the special blades 3 are arranged in the knife ring 2 at equal intervals, see Figure 4 , the dedicated blade 3 can be set to three.

[0054] Optional, see Figure 4 , Figure 6 and Figure 7 In one embodiment, the telescopic mechanism 5 includes a rotating motor 51, a driving gear 52, a plurality of transmission gears 53 and a rack 54. The fixed end of the rotating motor 51 is arranged in the knife ring 2 and is connected to the vibration monitor 4. The driving gear 52 is arranged on the driving end of the rotating motor 51 and rotates by the driving of the rotating motor 51. A plurality of transmission gears 53 are rotatably arranged in the knife ring 2 and are located on the outer periphery of the driving gear 52. The transmission gear 53 is meshed with the driving gear 52. One end of a plurality of racks 54 is meshed with the corresponding transmission gear 53 and the other end is connected to the corresponding special blade 3.

[0055] In this embodiment, the driving gear 52 is driven to rotate by the rotating motor 51, and then the transmission gear 53 is driven to rotate. Since the rack 54 is meshed with the transmission gear 53, the rotation of the transmission gear 53 will drive the rack 54 to perform telescopic movement, and then the special blade 3 connected to the rack 54 is driven to extend out of the knife ring 2 or retract into the knife ring 2.

[0056] Optional, see Figure 4 and Figure 5 In one embodiment, the special blade 3 is detachably connected to the rack 54. In this embodiment, the special blade 3 and the rack 54 are detachably connected, so that when the special blade 3 is worn, the worn special blade 3 can be replaced in time. Even when the shield machine is used for a long time, the cutting efficiency of the special blade 3 can be guaranteed, thereby ensuring the excavation efficiency of the shield machine.

[0057] The dedicated blade 3 and the rack 54 may be connected via bolts 6 .

[0058] Optional, see Figure 6 and Figure 7 In one embodiment, a plurality of transmission gears 53 are evenly distributed on the outer periphery of the driving gear 52 .

[0059] Optional, see Figure 2In one embodiment, the shield cutter further comprises a microcontroller 7, the input end of the microcontroller 7 is connected to the vibration monitor 4, and the output end of the microcontroller 7 is connected to the rotating motor 51 of the telescopic mechanism 5. It can be understood that the rotating motor 51 is connected to the vibration monitor 4 through the microcontroller 7. In this embodiment, the operation of the rotating motor 51 can be controlled by the microcontroller 7, thereby controlling the special blade 3 to extend out of the cutter ring 2 for use or retract into the cutter ring 2 for recovery.

[0060] For further information, see Figure 2 In one embodiment, the shield cutter further comprises a remote controller 8, an output end of the remote controller 8 is connected to the microcontroller 7, the vibration monitor 4 and the rotating motor 51 of the telescopic mechanism 5 are connected to the remote controller 8 via the microcontroller 7, and this embodiment sets a remote controller 8, which can control the microcontroller 7 to control the special blade 3 to extend out of the cutter ring 2 for use or retract into the cutter ring 2 for recovery, that is, this embodiment sets the remote controller 8 and the microcontroller 7 at the same time, and realizes effective control of the special blade 3 through a dual control mechanism, which is beneficial to the cutting efficiency and service life of the special blade 3.

[0061] Optional, see Figure 2 In one embodiment, the shield cutter further includes a cutter seat 9, and the cutter body 1 is disposed on the cutter seat 9.

[0062] A second aspect of this embodiment provides a shield machine, comprising a plurality of shield cutters for cutting reinforced concrete as described above.

[0063] The third aspect of the present application provides a control method for a shield cutter used for cutting reinforced concrete, see Figure 8 , which is applied to the shield cutter for cutting reinforced concrete as described above, and the control method includes:

[0064] S10, collecting vibration data of the shield cutter through a vibration monitor, wherein the vibration data includes the vibration amplitude and frequency of the shield cutter;

[0065] S20, judging whether the shield cutter needs to cut the steel bar according to the vibration data of the shield cutter;

[0066] S30. If the shield cutter needs to cut steel bars, the telescopic mechanism is driven to drive the special blade to extend out of the cutter ring.

[0067] Specifically, the vibration monitor continuously collects the vibration data generated by the shield cutter during the cutting process. The vibration data includes the vibration amplitude and frequency of the shield cutter. The vibration data is output in the form of analog signals or digital signals. After receiving the data, the microcontroller uses the built-in algorithm to analyze the vibration signal and determine the current cutting state (whether the steel bar is cut). Through the cooperation of the vibration monitor and the microcontroller, real-time monitoring and dynamic adjustment during the cutting process are achieved, which enhances the adaptability and safety of the shield cutter. This intelligent control mechanism not only improves the cutting efficiency of the shield cutter, but also extends the service life of the shield cutter.

[0068] In summary, the present application provides a shield machine, a shield cutter for cutting reinforced concrete, and a control method thereof, comprising a cutter body 1, a cutter ring 2, a plurality of special blades 3, a vibration monitor 4 and a telescopic mechanism 5, wherein the cutter body 1 can rotate through an external rotating mechanism, the cutter ring 2 is arranged on the periphery of the cutter body 1, and the cutter ring 2 is provided with a plurality of embedding positions 21 on its circumference, and a plurality of special blades 3 are movably arranged in the corresponding embedding positions 21 and are used for cutting steel bars, the vibration monitor 4 is arranged in the cutter body 1 and is used to monitor the vibration of the cutter body 1, the telescopic mechanism 5 is arranged in the cutter body 1 and is connected to the vibration monitor 4, the driving end of the telescopic mechanism 5 is connected to the special blade 3, and according to the vibration of the cutter body 1, the special blade 3 is extended out of the cutter ring 2 or retracted into the cutter ring 2 by the drive of the telescopic mechanism 5. Under normal circumstances, the present application can drive the knife ring 2 to rotate by the rotating knife body 1, so as to perform shield tunneling through the knife ring 2 to cut concrete. The present application also arranges a retractable special blade 3 for cutting steel bars in the knife ring 2. When it is necessary to cut the steel bars, the special blade 3 is driven to extend out of the knife ring 2 by the retractable mechanism 5, so as to cut the steel bars by driving the rotation of the knife body 1 to drive the rotation of the special blade 3. It can be foreseen that the present application determines whether it is necessary to cut steel bars or concrete according to the vibration of the knife body 1. Under the monitoring of the vibration monitor, the special blade 3 can be extended in time to cut the steel bars when encountering steel bars, so as to avoid the steel bars winding around the knife body 1 and affecting the excavation efficiency of the shield machine, thereby effectively ensuring the cutting efficiency of reinforced concrete and the service life of the special blade 3.

[0069] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A shield cutter for cutting reinforced concrete, comprising a cutter body and a cutter ring, wherein the cutter ring is arranged on the periphery of the cutter body, and is characterized in that: The cutter ring is provided with a plurality of embedding positions on its circumference, and the shield hob also includes: A plurality of special blades, which are movably arranged in the corresponding embedding positions and are used for cutting steel bars; A vibration monitor, which is disposed in the cutter body and is used to monitor the vibration of the cutter body; A telescopic mechanism, which is disposed in the blade body and connected to the vibration monitor, wherein a driving end of the telescopic mechanism is connected to the special blade; Wherein, according to the vibration of the knife body, the special blade is extended out of the knife ring or retracted into the knife ring by the drive of the telescopic mechanism; The vibration monitor is used to determine whether the shield cutter needs to cut the steel bar. If the shield cutter needs to cut the steel bar, the telescopic mechanism is driven to drive the special blade to extend out of the cutter ring. Wherein, the telescopic mechanism comprises: A rotating motor is disposed in the knife ring and connected to the vibration monitor; A driving gear, which is arranged on the driving end of the rotating motor; A plurality of transmission gears are rotatably disposed in the knife ring and are located at the outer periphery of the driving gear, and the transmission gears are meshed with the driving gears; A plurality of racks, one end of which is meshed with the corresponding transmission gear and the other end of which is detachably connected to the corresponding special blade; Wherein, a plurality of the transmission gears are evenly distributed on the outer periphery of the driving gear.

2. The shield cutter for cutting reinforced concrete according to claim 1, characterized in that: The knife ring comprises: A first half knife ring, which is fixedly arranged on one side of the periphery of the knife body; The second half knife ring is arranged on the other side of the periphery of the knife body and is detachably connected to the knife body.

3. The shield cutter for cutting reinforced concrete according to claim 1, characterized in that: The shield cutter also includes: A microcontroller, whose input end is connected to the vibration monitor, and whose output end is connected to the telescopic mechanism. The microcontroller is used to control the telescopic mechanism to drive the special blade to extend out of the knife ring or retract into the knife ring.

4. The shield cutter for cutting reinforced concrete according to claim 3, characterized in that: The shield cutter also includes: The remote controller has an output terminal connected to the microcontroller.

5. The shield cutter for cutting reinforced concrete according to claim 1, characterized in that: A plurality of the special blades are arranged in the knife ring at equal intervals.

6. The shield cutter for cutting reinforced concrete according to claim 1, characterized in that: The special blade is configured as a fan-shaped steel blade.

7. A shield machine, characterized in that: It comprises a plurality of shield cutters for cutting reinforced concrete as described in any one of claims 1 to 6.

8. A control method for a shield cutter for cutting reinforced concrete, characterized in that: It is applied to the shield cutter for cutting reinforced concrete as claimed in any one of claims 1 to 6, and the control method includes: Collecting vibration data of the shield cutter through a vibration monitor, wherein the vibration data includes the vibration amplitude and frequency of the shield cutter; Determine whether the shield cutter needs to cut the steel bars based on the shield cutter's vibration data; If the shield cutter needs to cut steel bars, the telescopic mechanism is driven to drive the special blade to extend out of the cutter ring.

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