Central slagging composite cutter head and roadheader

Abstract

The utility model relates to a tunneling equipment technical field especially discloses a center slagging composite cutter head and a tunneling machine, and the center slagging composite cutter head includes cutter head base body and cutter assembly, the cutter head base body includes rear taper plate, panel and support guiding portion, the first end of rear taper plate is rotatively connected with the tunneling main body, the second end is connected with the panel, rear taper plate is gradually reduced setting along the direction of the second end pointing to the first end, and rear taper plate can rotate under the drive of the tunneling main body, the panel and rear taper plate form the earth bunker that communicates with the slagging port on the tunneling main body, the support guiding portion is connected between rear taper plate and panel, and the support guiding portion is gradually reduced setting along the direction close to the tunneling main body, the cutter assembly is set up on the panel, the cutter assembly is used for carrying out the tunneling operation, and can bring the produced slag into the earth bunker. The utility model avoids the condition that the slag is accumulated in the earth bunker while reducing the occupied space, prevents the cutter head load from being too large, and solves the problem that the small diameter tunnel slagging is difficult.

Description

Technical Field

[0001] This utility model relates to the field of tunneling equipment technology, and in particular to a composite cutterhead with central muck discharge and a tunneling machine. Background Technology

[0002] Tunnels with a diameter of 1-2 meters are widely used in municipal engineering projects such as sewage, water supply, power supply, and energy. Excavation of tunnels in this diameter range is characterized by limited space, difficulties in muck removal and material transportation, high construction efficiency, and minimal impact on the surrounding environment. For small-diameter tunneling machines, the drive unit occupies most of the internal space; therefore, how to rationally design the muck removal structure within this limited space is a technical problem that urgently needs to be solved by those skilled in the art.

[0003] Patent CN115288710A discloses a tunneling machine that can use a center screw conveyor for muck removal, including a shield body, a cutterhead, and a main drive. A screw conveyor is mounted in the inner hole of the drive box via a flange, and is equipped with opposing guide rails. The screw conveyor has a spherical bearing, and the spherical bearing has an anti-twist block corresponding to the guide rail. A limiting groove corresponding to the anti-twist block is defined between the two guide rails. The limiting groove and the anti-twist block cooperate to restrict the rotation of the screw conveyor, thereby achieving accurate positioning of the screw conveyor. This solves the problem of low installation efficiency caused by the difficulty in positioning the screw conveyor in shield machines using a center screw conveyor for muck removal. However, with this center screw conveyor muck removal method, more than 2 / 3 of the cutterhead chamber always remains filled with muck, requiring high drive power from the tunneling machine and making it prone to jamming.

[0004] Therefore, it is necessary to provide a new composite cutterhead and tunneling machine with center-discharge muck to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to provide a composite cutterhead and tunneling machine with central muck discharge, which aims to solve the problem of muck discharge difficulties when existing construction equipment is used for small-diameter tunnel excavation.

[0006] To achieve the above objectives, this utility model proposes a composite cutterhead with a central muck discharge, comprising a cutterhead base and a cutter assembly. The cutterhead base includes a rear cone plate, a panel, and a support guide. The first end of the rear cone plate is rotatably connected to the tunneling body, and the second end is connected to the panel. The rear cone plate is tapered in the direction from the second end to the first end, and can rotate under the drive of the tunneling body. A soil chamber is formed between the panel and the rear cone plate, communicating with the muck inlet on the tunneling body. The support guide is connected between the rear cone plate and the panel, and is tapered in the direction close to the tunneling body. The cutter assembly is disposed on the panel and is used for tunneling operations, and can bring the generated muck into the soil chamber.

[0007] Optionally, the support guide includes a slag guide plate and multiple support ribs. The slag guide plate is disposed inside the soil chamber and is coaxially arranged with the rear cone plate. The first end of the slag guide plate is connected to the slag receiving port on the tunneling body, and the second end is connected to the cutter assembly. The support ribs are arranged radially along the rear cone plate and are connected between the panel, the slag guide plate, and the rear cone plate. The multiple support ribs are evenly distributed circumferentially along the rear cone plate.

[0008] Optionally, the slag guide plate is tapered in the direction from the second end to the first end.

[0009] Optionally, the rear cone plate includes a tapered section, a mounting flange, and a mounting ring. The tapered section is connected between the mounting flange and the mounting ring. The mounting flange is rotatably connected to the tunneling body, and the mounting ring is connected to the panel.

[0010] Optionally, the cutter head base is a one-piece molded part.

[0011] This utility model also provides a tunneling machine, including a tunneling body and a composite cutterhead with central muck discharge as described above. The tunneling body includes a shield, a main drive, and a muck discharge system. An installation space is formed inside the shield. The main drive is located within the installation space, and its output end is connected to the cutterhead base. The main drive can drive the cutterhead base to rotate. The muck discharge system is located within the installation space and is used to transport muck. The top of the muck discharge system has the muck receiving port.

[0012] Optionally, the slag discharge system includes an annular slag receiving cylinder and a screw conveyor. The annular slag receiving cylinder is coaxially arranged with the cutterhead base and is fixedly installed within the installation space. One end of the annular slag receiving cylinder extends through the main drive into the soil chamber, and the top of the annular slag receiving cylinder has a slag receiving port. The screw conveyor is rotatably arranged inside the annular slag receiving cylinder along the axial direction of the shield body. The shaft of the screw conveyor is connected to the panel through a connecting block. The main drive drives the cutterhead base to rotate while simultaneously driving the screw conveyor to rotate through the connecting block, so as to transport the slag and soil in the annular slag receiving cylinder from the first end to the second end.

[0013] Optionally, the shield body has a docking portion at one end near the cutterhead base, the docking portion forming a tapered surface that matches the rear cone plate, and the tapered surface is clearance-fitted with the outer wall of the rear cone plate.

[0014] In this utility model, both the rear cone plate and the support guide are tapered, which can ensure structural strength and also serve as a guide for slag. The cutterhead base and the cutter assembly can rotate under the drive of the tunneling body, so that the slag fed into the soil chamber by the cutter assembly can fall into the slag inlet along the support guide. This reduces the space occupied and avoids the accumulation of slag in the soil chamber, prevents excessive load on the cutterhead, and effectively solves the problem of difficult slag removal in small-diameter tunnels. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a partial structural diagram of the tunneling machine in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the installation of the cutter head base and the cutter assembly in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the supporting guide part in an embodiment of this utility model; Figure 4 This is a schematic diagram of the connecting block in an embodiment of the present invention.

[0017] Explanation of icon numbers: 1. Cutterhead base; 1.1. Rear cone plate; 1.1.1. Tapered section; 1.1.2. Mounting flange; 1.1.3. Mounting ring; 1.2. Panel; 1.3. Support guide; 1.3.1. Slag guide plate; 1.3.2. Support stiffener; 1.4. Soil chamber; 2. Cutter assembly; 3. Tunneling body; 3.1. Shield body; 3.1.1. Mounting space; 3.1.2. Docking part; A. Tapered surface; 3.2. Main drive; 3.3. Slag discharge system; 3.3.1. Annular slag receiving cylinder; B. Slag receiving port; 3.3.2. Spiral conveyor; 3.3.3. Connecting block; C. Docking hole.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This utility model proposes a composite cutterhead and tunneling machine with central slag discharge, aiming to solve the problem that existing construction equipment cannot be used for cutting large objects.

[0025] like Figures 1 to 4As shown, the composite cutterhead with central muck discharge includes a cutterhead base 1 and a cutter assembly 2. The cutterhead base 1 includes a rear cone plate 1.1, a panel 1.2, and a support guide 1.3. The first end of the rear cone plate 1.1 is rotatably connected to the tunneling body 3, and the second end is connected to the panel 1.2. The rear cone plate 1.1 is tapered in the direction from the second end to the first end, and the rear cone plate 1.1 can rotate under the drive of the tunneling body 3. A soil chamber 1.4 is formed between the panel 1.2 and the rear cone plate 1.1, which communicates with the muck inlet B on the tunneling body 3. The support guide 1.3 is connected between the rear cone plate 1.1 and the panel 1.2, and the support guide 1.3 is tapered in the direction close to the tunneling body 3. The cutter assembly 2 is disposed on the panel 1.2. The cutter assembly 2 is used for tunneling operations and can bring the generated muck into the soil chamber 1.4. In this embodiment, both the rear cone plate 1.1 and the support guide 1.3 are tapered, which can ensure structural strength and also serve as a guide for slag. The cutterhead base 1 and the cutter assembly 2 can rotate under the drive of the tunneling body 3, so that the slag fed into the soil chamber 1.4 by the cutter assembly 2 can fall into the slag receiving port B along the support guide 1.3. This reduces the space occupied and avoids the accumulation of slag in the soil chamber 1.4, prevents excessive load on the cutterhead, and effectively solves the problem of difficult slag removal in small-diameter tunnels.

[0026] In this embodiment, the cutting tool assembly 2 is front-mounted, which facilitates the disassembly and replacement of the hobbing cutter.

[0027] Specifically, the support guide part 1.3 includes a slag guide plate 1.3.1 and multiple support stiffeners 1.3.2. The slag guide plate 1.3.1 is disposed inside the soil chamber 1.4 and is coaxially disposed with the rear cone plate 1.1. The first end of the slag guide plate 1.3.1 is connected to the slag receiving port B on the tunneling body 3, and the second end is connected to the cutter assembly 2. The support stiffeners 1.3.2 are arranged radially along the rear cone plate 1.1. The support stiffeners 1.3.2 are connected between the panel 1.2, the slag guide plate 1.3.1 and the rear cone plate 1.1, and the multiple support stiffeners 1.3.2 are evenly distributed circumferentially along the rear cone plate 1.1. The supporting stiffeners 1.3.2 are arranged radially, which can guide the panel 1.2 and the rear cone plate 1.1 while also ensuring the structural strength between the panel 1.2, the guide plate 1.3.1 and the rear cone plate 1.1. The multiple supporting stiffeners 1.3.2 are circumferentially distributed to further ensure the structural strength. The multiple supporting stiffeners 1.3.2 can cooperate with the guide plate 1.3.1 to guide the slag between the guide plate 1.3.1 and the rear cone plate 1.1 so that the slag can fall smoothly into the slag receiving port B along the gradually narrowing rear cone plate 1.1.

[0028] Furthermore, the guide plate 1.3.1 is tapered in the direction from the second end to the first end. The cutter assembly 2, which is arranged corresponding to the guide plate 1.3.1, allows the generated slag to fall into the slag receiving port B along the tapered guide plate 1.3.1.

[0029] Furthermore, the rear cone plate 1.1 includes a tapered section 1.1.1, a mounting flange 1.1.2, and a mounting ring 1.1.3. The tapered section 1.1.1 is connected between the mounting flange 1.1.2 and the mounting ring 1.1.3. The mounting flange 1.1.2 is rotatably connected to the tunneling body 3, and the mounting ring 1.1.3 is connected to the panel 1.2. Mounting flanges 1.1.2 and mounting rings 1.1.3 are respectively provided at both ends of the tapered section 1.1.1 to facilitate docking with the tunneling body 3 and the panel 1.2.

[0030] In this embodiment, the cutter head base 1 is a one-piece molded part. The rear cone plate 1.1, the panel 1.2, and the support guide part 1.3 of the cutter head base 1 can be formed by welding or by other existing methods to achieve one-piece molding, which effectively reduces assembly steps, improves assembly efficiency, and reduces production costs and production difficulty.

[0031] This embodiment also provides a tunneling machine, including a tunneling body 3 and a composite cutterhead with central muck discharge as described above. The tunneling body 3 includes a shield 3.1, a main drive 3.2, and a muck discharge system 3.3. An installation space 3.1.1 is formed inside the shield 3.1. The main drive 3.2 is disposed in the installation space 3.1.1, and the output end of the main drive 3.2 is connected to the cutterhead base 1. The main drive 3.2 can drive the cutterhead base 1 to rotate. The muck discharge system 3.3 is disposed in the installation space 3.1.1 and is used to transport muck. A muck receiving port B is provided on the top of the muck discharge system 3.3. The slag discharge system 3.3 includes an annular slag receiving cylinder 3.3.1 and a screw conveyor 3.3.2. The annular slag receiving cylinder 3.3.1 is coaxially arranged with the cutterhead base 1 and is fixedly installed in the installation space 3.1.1. One end of the annular slag receiving cylinder 3.3.1 extends through the main drive 3.2 into the soil chamber 1.4. The top of the annular slag receiving cylinder 3.3.1 has a slag receiving port B. The screw conveyor 3.3.2 is rotatably installed in the annular slag receiving cylinder 3.3.1 along the axis of the shield body 3.1. The shaft of the screw conveyor 3.3.2 is connected to the panel 1.2 through the connecting block 3.3.3. When the cutterhead base 1 rotates, the main drive 3.2 drives the screw conveyor 3.3.2 to rotate through the connecting block 3.3.3, so as to transport the slag in the annular slag receiving cylinder 3.3.1 from the first end to the second end. The main drive 3.2 drives the entire central slag discharge composite cutterhead device to rotate through the cutterhead base 1, and then drives the screw conveyor 3.3.2 to rotate through the connecting block 3.3.3. This makes full use of the limited space and reduces the space occupied, thus enabling it to adapt to the tunneling operation of small-diameter tunnels.

[0032] In this embodiment, the connecting block 3.3.3 can be a hexagonal head structure, and the shaft profile of the screw conveyor 3.3.2 matches the mating hole C on the connecting block 3.3.3; the connecting block 3.3.3 can also be a structure with equivalent function.

[0033] In this embodiment, the number and arrangement of the support ribs 1.3.2 and the slag guide plates 1.3.1 can be adjusted according to the actual situation to improve the slag discharge efficiency.

[0034] In this embodiment, the cutter assembly 2 arranged on the cutterhead base 1 is not limited to hobbing cutters, cutting cutters, and scrapers, but can also be toothed cutters or the like, which can also perform tunneling operations.

[0035] Specifically, the shield body 3.1 has a docking portion 3.1.2 at one end near the cutterhead base 1. The docking portion 3.1.2 forms a tapered surface A that matches the rear cone plate 1.1, and the tapered surface A is clearance-fitted with the outer wall of the rear cone plate 1.1. In this embodiment, the rear cone plate 1.1 is rotatably connected to the annular slag receiving cylinder 3.3.1, so that it can rotate relative to the annular slag receiving cylinder 3.3.1 under the drive of the main drive 3.2. The shield body 3.1 is clearance-fitted with the rear cone plate 1.1 through the docking surface to reduce the space occupied by the overall tunneling machine, adapt to the operation of small-diameter tunnels, and improve space utilization.

[0036] Since the tunneling machine includes a composite cutterhead with center-discharge as described above, it possesses all the beneficial effects of the aforementioned composite cutterhead with center-discharge, which will not be elaborated upon here.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A composite cutterhead with central slag discharge, characterized in that, The device includes a cutterhead base (1) and a cutter assembly (2). The cutterhead base (1) includes a rear cone plate (1.1), a face plate (1.2), and a support guide (1.3). The first end of the rear cone plate (1.1) is rotatably connected to the tunneling body (3), and the second end is connected to the face plate (1.2). The rear cone plate (1.1) is tapered in the direction from the second end to the first end, and the rear cone plate (1.1) can rotate under the drive of the tunneling body (3). The face plate (1.2) and the rear cone plate (1.3) are connected to each other. A soil chamber (1.4) is formed between the plates (1.1) and communicates with the slag inlet (B) on the tunneling body (3); the support guide (1.3) is connected between the rear cone plate (1.1) and the panel (1.2), and the support guide (1.3) is gradually tapered in the direction close to the tunneling body (3); the cutter assembly (2) is set on the panel (1.2), and the cutter assembly (2) is used to perform tunneling operations and can bring the generated slag into the soil chamber (1.4).

2. The composite cutterhead with center-discharge as described in claim 1, characterized in that, The support guide part (1.3) includes a slag guide plate (1.3.1) and a plurality of support ribs (1.3.2). The slag guide plate (1.3.1) is disposed in the soil chamber (1.4) and is coaxially disposed with the rear cone plate (1.1). The first end of the slag guide plate (1.3.1) is connected to the slag receiving port (B) on the tunneling body (3), and the second end is connected to the cutter assembly (2). The support ribs (1.3.2) are arranged radially along the rear cone plate (1.1). The support ribs (1.3.2) are connected between the panel (1.2), the slag guide plate (1.3.1) and the rear cone plate (1.1), and the plurality of support ribs (1.3.2) are evenly distributed circumferentially along the rear cone plate (1.1).

3. The composite cutterhead with center-discharge as described in claim 2, characterized in that, The slag guide plate (1.3.1) is gradually tapered along the direction from the second end to the first end.

4. The composite cutterhead with center-discharge as described in claim 3, characterized in that, The rear cone plate (1.1) includes a tapered section (1.1.1), a mounting flange (1.1.2), and a mounting ring (1.1.3). The tapered section (1.1.1) is connected between the mounting flange (1.1.2) and the mounting ring (1.1.3). The mounting flange (1.1.2) is rotatably connected to the tunneling body (3), and the mounting ring (1.1.3) is connected to the panel (1.2).

5. The composite cutterhead with center-discharge as described in claim 4, characterized in that, The cutter head base (1) is a one-piece molded part.

6. A tunneling machine, characterized in that, The device includes a tunneling body (3) and a composite cutterhead with central slag discharge as described in any one of claims 1 to 5. The tunneling body (3) includes a shield (3.1), a main drive (3.2), and a slag discharge system (3.3). An installation space (3.1.1) is formed inside the shield (3.1). The main drive (3.2) is located inside the installation space (3.1.1), and the output end of the main drive (3.2) is connected to the cutterhead base (1). The main drive (3.2) can drive the cutterhead base (1) to rotate. The slag discharge system (3.3) is located inside the installation space (3.1.1) and is used to transport slag. The top of the slag discharge system (3.3) is provided with the slag receiving port (B).

7. The tunneling machine as described in claim 6, characterized in that, The slag discharge system (3.3) includes an annular slag receiving cylinder (3.3.1) and a screw conveyor (3.3.2). The annular slag receiving cylinder (3.3.1) is coaxially arranged with the cutterhead base (1) and is fixedly installed in the installation space (3.1.1). One end of the annular slag receiving cylinder (3.3.1) extends through the main drive (3.2) into the soil chamber (1.4). The top of the annular slag receiving cylinder (3.3.1) is provided with the slag receiving port (B). The spiral auger (3.3.2) is rotatably mounted inside the annular slag receiving cylinder (3.3.1) along the axial direction of the shield body (3.1). The rotating shaft of the spiral auger (3.3.2) is connected to the panel (1.2) through the connecting block (3.3.3). The main drive (3.2) drives the cutterhead base (1) to rotate while driving the spiral auger (3.3.2) to rotate through the connecting block (3.3.3) to transport the slag in the annular slag receiving cylinder (3.3.1) from the first end to the second end.

8. The tunneling machine as described in claim 7, characterized in that, The shield body (3.1) has a docking part (3.1.2) at one end near the cutterhead base (1). The docking part (3.1.2) forms a tapered surface (A) that matches the rear cone plate (1.1). The tapered surface (A) is clearance-fitted with the outer wall of the rear cone plate (1.1).

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