Tunnel mechanical excavation device

Abstract

The utility model discloses a tunnel machinery excavation device, which belongs to the field of excavation equipment and comprises a milling excavator main body and a milling excavator head, the milling excavator head comprises a connecting block, a hydraulic cylinder and a rotating mechanism, the connecting block is detachably connected to a moving part of the milling excavator main body, the hydraulic cylinder is arranged at one end of the connecting block, and the rotating mechanism is arranged at the other end of the connecting block. The rotating mechanism is horizontally and rotatably arranged at the end, away from the connecting block, of the hydraulic cylinder. A cutterhead and a drill bit are arranged on the rotating mechanism; threaded holes are formed in the cutter head so that a grinding mechanism used for grinding the edge of the tunnel can be conveniently connected to the cutter head in a threaded mode. When an existing tunnel excavation device is used for excavating a tunnel, over-excavation and under-excavation of the tunnel are easily caused, and the problem that the edge of the tunnel is uneven cannot be solved. Therefore, the mechanical excavation device for the tunnel is provided, the mechanical excavation device for the tunnel is easy to operate and convenient to use, a grinding mechanism on a cutter head is easy to replace, the over-excavation and under-excavation phenomena in the tunnel excavation process can be reduced, and the edge of the tunnel can be ground into a desired shape.

Description

Technical Field

[0001] The utility model relates to the technical field of excavation equipment, and in particular to a tunnel mechanical excavation device. Background Technique

[0002] The milling excavator can be widely used in tunnel, ditch, and municipal pipeline excavation; highway pavement crushing, mining, and rock and frozen soil excavation; open-pit coal mine excavation, surface renovation, and various construction fields such as the steel industry and forestry. When facing the construction environment of a very small clear distance interchange tunnel, due to the advantages of simple operation, high controllability, clear and accurate excavation contour line of the milling excavator; it can easily solve problems such as under-excavation trimming, inner surface grooving, and excavation of side ditches in the tunnel, making it very suitable for construction using a milling excavator. The milling excavator (head) is installed on a hydraulic excavator and can replace general configurations such as a bucket and a breaker. The milling excavator has low vibration and low noise, and the milled rock and soil particles are small and uniform. It can rotate 360° by itself, and is convenient for maintenance, without the need to grease and fill nitrogen. The excavation contour line of the milling excavator is relatively accurate and can be used for problems such as under-excavation trimming in the tunnel, inner surface grooving, and excavation of side ditches. Generally speaking, the milling excavator can be used for tunnel excavation contour correction, tunneling in medium and low hardness rock formations, channel and trench milling, and milling of rock and frozen soil tunnels. The excavation volume of soil tunnels can reach 30m 3 / h to 60m 3 / h (varying with the strength and fragmentation of the rock). In soft rock, the advance depth of each excavation depends on the situation of the face rock formation.

[0003] However, when using a milling excavator for tunnel excavation, due to the poor control of mechanical excavation, there are many over-excavation and under-excavation phenomena during the tunnel construction process. In addition, during the tunnel excavation process, the mechanically operated equipment will inevitably make the tunnel edge uneven. To solve the problem of the uneven tunnel edge, the usual solution is to polish it manually. However, manual polishing not only has low efficiency, but also prolongs the construction period. Moreover, the dust generated during the polishing process will have a greater impact on the health of workers. Therefore, there is an urgent need to provide a machine that can not only reduce over-excavation and under-excavation of the tunnel, but also grind the tunnel edge into the desired shape. Content of the Utility Model

[0004] To solve the problems of over-excavation and under-excavation of the tunnel and the technical problem of difficult treatment of the tunnel edge that occur when using a milling excavator for tunnel excavation in the above-mentioned prior art, the utility model provides a tunnel mechanical excavation device.

[0005] To achieve the above technical solution, the present utility model provides a tunnel mechanical excavation device, which includes a milling machine main body and a milling head. The milling head includes a connecting block, a hydraulic cylinder, and a rotating mechanism. The connecting block is detachably connected to the moving part of the milling machine main body. The hydraulic cylinder is arranged at one end of the connecting block. The rotating mechanism is rotatably arranged horizontally at the end of the hydraulic cylinder away from the connecting block. A cutter head and a drill bit are arranged on the rotating mechanism; threaded holes are arranged on the cutter head to facilitate the threaded connection of a grinding mechanism for grinding the tunnel edge on the cutter head; the rotating mechanism can drive the drill bit to rotate to excavate the tunnel.

[0006] Further, the drill bit includes a telescopic part and a pointed end part, and the telescopic part can perform telescopic movement in the hydraulic cylinder along the center line direction of the moving part.

[0007] Further, grooves are formed on the cutter head to facilitate the separation of crushed stones from the cutter head.

[0008] Further, the grinding mechanism includes a connecting part and a cutting part. The height of the connecting part is less than the height of the groove, and the cutting part protrudes from the groove to cut and grind the tunnel edge.

[0009] Further, the grinding mechanism includes a square shape, a triangular shape, or a conical shape.

[0010] As mentioned in the background technology, when using the existing tunnel excavation device for tunnel excavation, it is easy to cause over-excavation and under-excavation of the tunnel, and the problem of uneven tunnel edges cannot be solved. For this reason, the present utility model proposes a tunnel mechanical excavation device. This tunnel mechanical excavation device is simple to operate, convenient to use, and the grinding mechanism on the cutter head is easy to replace. It can not only reduce the over-excavation and under-excavation phenomena during tunnel excavation, but also grind the tunnel edge into the desired shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0012] Figure 1 is the overall structural schematic diagram of a tunnel mechanical excavation device provided by the present utility model;

[0013] Figure 2 is the side view of a tunnel mechanical excavation device provided by the present utility model;

[0014] Figure 3 is the overall structural schematic diagram of the milling head provided by the present utility model;

[0015] Figure 4 is the front view of the cutter head provided by the present utility model;

[0016] Figure 5 Schematic diagram of the square grinding mechanism provided by the present utility model;

[0017] Figure 6 Schematic diagram of the triangular grinding mechanism provided by the present utility model;

[0018] Figure 7 Schematic diagram of the conical grinding mechanism provided by the present utility model;

[0019] Among them, the above-mentioned drawings include the following reference numerals:

[0020] 1, the main body of the milling excavator; 11, the moving part; 2, the milling head; 21, the connecting block; 22, the hydraulic cylinder; 23, the rotating mechanism; 3, the cutter head; 31, the threaded hole; 32, the groove; 33, the through hole; 4, the drill bit; 41, the telescopic part; 42, the pointed end part; 5, the grinding mechanism; 51, the connecting part; 52, the cutting part. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0023] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present utility model. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but should be regarded as part of the authorized specification when appropriate. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] See Figures 1 to 7As shown in the figure, the present utility model provides a tunnel mechanical excavation device. Similar to the prior art, the tunnel mechanical excavation device includes a milling machine main body 1 and a milling head 2. The milling head 2 includes a connecting block 21, a hydraulic cylinder 22, and a rotating mechanism 23. The connecting block 21 is detachably connected to the moving part 11 of the milling machine main body 1. The hydraulic cylinder 22 is arranged at one end of the connecting block 21. The rotating mechanism 23 is rotatably arranged horizontally at the end of the hydraulic cylinder 22 away from the connecting block 21. Different from the prior art, a cutter head 3 and a drill bit 4 are arranged on the rotating mechanism 23; threaded holes 31 are arranged on the cutter head 3 to facilitate the threaded connection of a grinding mechanism 5 for grinding the tunnel edge on the cutter head 3. In addition, through holes 33 are arranged on the cutter head 3, and the through holes are arranged at the central position of the cutter head 3. The drill bit 4 passes through the through hole 33 and is connected to the rotating mechanism; the rotating mechanism 23 can drive the drill bit 4 to rotate to excavate the tunnel.

[0025] That is to say, when actually using the tunnel mechanical excavation device provided by the present utility model, the milling head 2 is connected to the moving part 11 on the milling machine, and then the operator controls the rotating mechanism 23 to rotate through the milling machine to drive the cutter head 3 and the drill bit 4 to rotate. When it is necessary to excavate the tunnel, the drill bit 4 is drilled into the heading face to start the excavation work. When there are irregular surfaces at the edge of the tunnel and grinding is required, the cutter head 3 connected to the rotating mechanism 23 is used to process it, and the tunnel edge can be ground into the desired shape.

[0026] As a preference, the drill bit 4 includes a telescopic part 41 and a pointed part 42. The telescopic part 41 can perform telescopic movement in the hydraulic cylinder 22 along the center line direction of the moving part 11. That is to say, when encountering relatively hard rocks during the excavation process, the drill bit 4 on the moving part 11 of the milling machine can be operated to impact the rocks, so that the relatively hard rocks fall from the heading face. In order to improve the service life of the drill bit 4, the telescopic part 41 of the drill bit 4 is designed to be able to perform telescopic movement in the hydraulic cylinder 22 along the center line direction of the moving part 11 to reduce the stress on the drill bit 4 during the impact process.

[0027] As a preference, grooves 32 are formed on the cutter head 3 to facilitate the separation of crushed stones from the cutter head 3. That is to say, when actually using the cutter head 3 to grind the tunnel edge, after the rocks at the tunnel edge are separated from the tunnel, they may fall into the cutter head 3. After the grooves 32 are arranged on the cutter head 3, the fallen crushed stones can be separated from the cutter head 3 in time, reducing the pressure on the cutter head 3.

[0028] As a preference, the grinding mechanism 5 includes a connecting part 51 and a cutting part 52. The height of the connecting part 51 is less than the height of the groove 32, and the cutting part 52 protrudes from the groove 32 to cut and grind the tunnel edge.

[0029] Such asFigures 5 - 7 As shown, in order to cope with different tunnel environments, the advantage of presetting the connection holes for the grinding mechanism 5 on the cutter head 3 is that different grinding mechanisms 5 can be rotated according to different tunnel edges, and the subsequent maintenance of the grinding mechanism 5 can be facilitated. Generally speaking, the grinding mechanism 5 includes a square, a triangle or a cone.

[0030] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper..." etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the attached drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0031] In addition, it should be noted that the use of words such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, so they cannot be understood as limiting the protection scope of the present utility model.

[0032] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tunnel excavation device, comprising a milling machine body (1) and a milling head (2), wherein the milling head (2) comprises a connecting block (21), a hydraulic cylinder (22), and a rotating mechanism (23), wherein the connecting block (21) is detachably connected to a moving part (11) of the milling machine body (1), the hydraulic cylinder (22) is arranged at one end of the connecting block (21), and the rotating mechanism (23) is horizontally rotatably arranged at one end of the hydraulic cylinder (22) away from the connecting block (21), characterized in that: The rotating mechanism (23) is provided with a cutter disc (3) and a drill bit (4); the cutter disc (3) is provided with a threaded hole (31) and a through hole (33); the threaded hole (31) is used for threadedly connecting a grinding mechanism (5) for grinding the edge of a tunnel; the through hole (33) is arranged at a central position of the cutter disc (3); the drill bit (4) passes through the through hole (33) and is connected to the rotating mechanism (23); the rotating mechanism (23) can drive the drill bit (4) to rotate so as to excavate a tunnel.

2. The mechanical tunnel excavation device according to claim 1, characterized in that: The drill bit (4) comprises a telescopic portion (41) and a tip portion (42), and the telescopic portion (41) can perform telescopic movement in the hydraulic cylinder (22) along the center line direction of the moving portion (11).

3. The mechanical tunnel excavation device according to claim 1, characterized in that: The cutter disc (3) is provided with a groove (32) to facilitate separation of crushed stones from the cutter disc (3).

4. The mechanical tunnel excavation device according to claim 3, characterized in that: The grinding mechanism (5) comprises a connecting portion (51) and a cutting portion (52), wherein the height of the connecting portion (51) is smaller than the height of the groove (32), and the cutting portion (52) protrudes from the groove (32) to cut and grind the edge of the tunnel.

5. The mechanical tunnel excavation device according to claim 4, characterized in that: The grinding mechanism (5) includes a square, a triangle or a cone shape.

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