A dust removal system for tunnel boring machine

Abstract

The present invention discloses a dust removal system for a tunnel boring machine. The telescopic length of the telescopic cylinder can be adjusted by adjusting the position of the rigid cylinder, thereby achieving adjustment of the distance between the rigid cylinder and the tunnel face only by driving the rigid cylinder to move through an electric drive mechanism without changing the position of a dust removal vehicle. At the same time, the dust removal vehicle is provided to facilitate scheduling and position adjustment. When the telescopic cylinder reaches the telescopic limit, the distance between the rigid cylinder and the tunnel face can be adjusted by adjusting the position of the dust removal vehicle. It can be seen that the dust removal system for a tunnel boring machine provided by the present invention can improve the problem in the prior art that the distance between the air suction port and the tunnel face is not easy to adjust.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel boring machines, and in particular relates to a dust removal system for a tunnel boring machine. Background Art

[0002] Dust treatment has always been an important issue in tunnel construction. Dust not only causes harm to the health of construction workers, but also has a great impact on equipment and construction efficiency. Dust removal systems have become essential equipment in tunnel construction. With the popularization of dry dust removal equipment, various forms of dust removal systems are used in tunnel construction. There are many ways to install dust removal devices. For example, if it is installed on the excavation equipment, the dust removal device and the suction cylinder move with the dust removal equipment. Or it can be installed on the side and rear of the excavation equipment, and the suction cylinder is attached to one side of the tunnel, and the position of the dust removal system needs to be adjusted manually. However, the above-mentioned dust removal system has the following problems:

[0003] 1. During support operation, the distance between the air inlet and the face of the tunnel is not easy to adjust;

[0004] 2. The dust removal equipment is inefficient and is idle during tunnel support treatment;

[0005] 3. If the dust removal equipment is attached to the tunneling equipment, there is a contradiction between the power of the dust removal equipment and the size of the tunneling equipment. When the power of the dust removal equipment is large enough, the size of the dust removal equipment must be increased, which will lead to an increase in the volume of the tunneling equipment, thereby affecting the operating flexibility of the tunneling equipment. Summary of the invention

[0006] In view of the above shortcomings of the prior art, the present invention provides a roadheader dust removal system to improve the problem in the prior art that the distance between the air suction port and the tunnel face is difficult to adjust.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A roadheader dust removal system, comprising:

[0009] Positive pressure air duct, located on one side of the tunnel;

[0010] The dust removal vehicle is located on the other side of the tunnel;

[0011] A negative pressure air cylinder, comprising a telescopic cylinder connected to the dust removal cylinder of the dust removal vehicle, and a rigid cylinder connected to the telescopic cylinder, wherein the air suction port on the rigid cylinder faces the tunnel face;

[0012] The electric drive mechanism is drivingly connected to the rigid cylinder and is used to drive the rigid cylinder to move in the tunnel so as to adjust the distance between the rigid cylinder and the tunnel face.

[0013] Furthermore, it also includes a beam plate connected to the top of the arch in the tunnel, and the telescopic cylinder is slidably connected to the beam plate through a first sliding assembly.

[0014] Furthermore, the first sliding assembly includes:

[0015] A tube hoop, sleeved on the outside of the telescopic tube;

[0016] A first pulley, slidably connected to the beam plate;

[0017] A first connecting member is connected to the tube hoop and the first pulley respectively.

[0018] Furthermore, the beam plate includes a plurality of I-beams connected by fastening components, wherein the plurality of I-beams are connected to the arch frame by lifting blocks.

[0019] Furthermore, the beam plate is connected to the arch frame via a lifting assembly, and the lifting assembly is used to adjust the distance between the beam plate and the arch frame.

[0020] Furthermore, the telescopic cylinder is connected to the dust removal cylinder on the dust removal vehicle through a bent cylinder, wherein the connection between the bent cylinder and the telescopic cylinder is also detachably connected to the beam plate.

[0021] Furthermore, the electric drive mechanism comprises:

[0022] A driving frame connected to the rigid cylinder;

[0023] A second sliding assembly is disposed on the driving frame and is slidably connected to the beam plate;

[0024] A driving wheel, which is arranged on the driving frame and can move along the length direction of the beam plate;

[0025] The driving part is connected to the driving wheel and is used to drive the driving wheel to move along the length direction of the beam plate.

[0026] Furthermore, when a slide rail is provided along the length direction of the beam plate, the second sliding assembly includes:

[0027] A second connecting member connected to the driving frame;

[0028] The second pulley is rotatably connected to the second connecting member and is slidably connected to the slide rail.

[0029] Furthermore, the second sliding assembly also includes:

[0030] A third connecting member, disposed on the driving frame and close to the second connecting member;

[0031] Two directional wheels are arranged on the third connecting member and are located on both sides of the beam plate. The two directional wheels are also slidably connected to the two sides of the beam plate respectively.

[0032] Furthermore, the driving unit includes a motor arranged on the driving frame, and a reducer for connecting the output shaft of the motor to the driving wheel.

[0033] The roadheader dust removal system provided by the present invention can adjust the telescopic length of the telescopic cylinder by adjusting the position of the rigid cylinder, thereby achieving adjustment of the distance between the rigid cylinder and the tunnel face by only driving the rigid cylinder to move by an electric drive mechanism without changing the position of the dust removal vehicle; at the same time, by arranging the dust removal vehicle, it is convenient to dispatch and adjust the position. When the telescopic cylinder reaches the telescopic limit, the distance between the rigid cylinder and the tunnel face can be adjusted by adjusting the position of the dust removal vehicle. It can be seen that the roadheader dust removal system provided by the present invention can improve the problem in the prior art that the distance between the air suction port and the tunnel face is not easy to adjust.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0035] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 A schematic structural diagram of a dust removal system for a roadheader according to an exemplary embodiment of the present invention;

[0038] Figure 2 A top view of a roadheader dust removal system according to an exemplary embodiment of the present invention;

[0039] Figure 3 A side view of a dust removal system for a roadheader according to an exemplary embodiment of the present invention;

[0040] Figure 4 It is a schematic structural diagram of a negative pressure air cylinder according to an exemplary embodiment of the present invention;

[0041] Figure 5 A top view of a negative pressure air cylinder according to an exemplary embodiment of the present invention;

[0042] Figure 6is a schematic structural diagram of an electric drive mechanism according to an exemplary embodiment of the present invention;

[0043] Figure 7 1 is a top view of an electric drive mechanism according to an exemplary embodiment of the present invention.

[0044] In the figure:

[0045] 1-positive pressure wind cylinder, 2-dust removal vehicle, 3-tunnel, 4-telescopic cylinder, 5-rigid cylinder, 6-flight face, 7-arch frame, 8-beam and slab, 9-cylinder hoop, 10-first pulley, 11-first connecting piece, 12-fastening assembly, 13-lifting block, 14-bent cylinder, 15-driving frame, 16-driving wheel, 17-driving part, 18-second connecting piece, 19-second pulley, 20-third connecting piece, 21-directional wheel. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] The present invention provides a roadheader dust removal system, see Figures 1 to 3 , including a positive-pressure wind cylinder 1, a dust removal vehicle 2, a negative-pressure wind cylinder and an electric drive mechanism, the positive-pressure wind cylinder 1 is arranged on one side of the tunnel 3; the dust removal vehicle 2 is arranged on the other side of the tunnel 3; the negative-pressure wind cylinder includes a telescopic cylinder 4 connected to the dust removal cylinder of the dust removal vehicle 2, and a rigid cylinder 5 connected to the telescopic cylinder 4, and the air suction port on the rigid cylinder 5 faces the tunnel face 6; the electric drive mechanism is drivingly connected to the rigid cylinder 5, and is used to drive the rigid cylinder 5 to move in the tunnel 3 to adjust the distance between the rigid cylinder 5 and the tunnel face 6.

[0051] The roadheader dust removal system provided by the present invention can adjust the telescopic length of the telescopic cylinder 4 by adjusting the position of the rigid cylinder 5, thereby realizing the adjustment of the distance between the rigid cylinder 5 and the face 6 by only driving the rigid cylinder 5 to move by the electric drive mechanism without changing the position of the dust removal vehicle 2; at the same time, by arranging the dust removal vehicle 2, it is convenient to dispatch and adjust the position. When the telescopic cylinder 4 reaches the telescopic limit, the distance between the rigid cylinder 5 and the face 6 can be adjusted by adjusting the position of the dust removal vehicle 2. It can be seen that the roadheader dust removal system provided by the present invention can improve the problem in the prior art that the distance between the air intake and the face 6 is not easy to adjust. Preferably, the dust removal vehicle 2 is a dry dust removal vehicle 2.

[0052] In some embodiments, see Figure 4 and 5 The roadheader dust removal system also includes a beam plate 8 connected to the top of the arch frame 7 in the tunnel 3, and the telescopic cylinder 4 is slidably connected to the beam plate 8 through a first sliding assembly. By slidingly connecting the telescopic cylinder 4 to the beam plate 8 located on the top of the arch frame 7, the telescopic cylinder 4 is suspended on the top of the tunnel 3, avoiding the need to set an additional support assembly in the tunnel 3 to support the telescopic cylinder 4.

[0053] As a preferred embodiment, the first sliding assembly includes a tube hoop 9, a first pulley 10 and a first connecting member 11, the tube hoop 9 is sleeved on the outside of the telescopic tube 4; the first pulley 10 is slidably connected to the beam 8; the first connecting member 11 is connected to the tube hoop 9 and the first pulley 10 respectively, so that the tube hoop 9 slides on the beam 8 driven by the first pulley 10, and then the telescopic tube 4 changes its length under the position change of the first pulley 10, so as to adjust the distance between the rigid tube 5 and the tunnel face 6 arranged on one side of the telescopic tube 4. As a preferred embodiment, the first connecting member 11 is a connecting ring that can detachably connect the tube hoop 9 and the first pulley 10, and the connecting ring is also movably connected to the beam 8, so that the connecting ring moves on the beam 8 driven by the sliding of the pulley.

[0054] As a preferred embodiment, the beam slab 8 includes a plurality of I-beams connected by a fastening assembly 12, wherein the plurality of I-beams are connected to the arch frame 7 by a lifting block 13. After the support operation of the tunnel 3 is completed, a plurality of lifting blocks 13 are arranged on the arch frame 7, and then a plurality of I-beams are laid to provide a telescopic path for the telescopic cylinder 4. Preferably, two adjacent I-beams are detachably connected by a bolt assembly to facilitate the adjustment of the length of the beam slab 8 according to the length of the tunnel 3. At the same time, the I-beams can be reused without laying them in the entire tunnel 3. For example, when the beam slab 8 needs to be moved toward the face 6, the I-beam on the side away from the face 6 can be removed and connected to the I-beam on the side close to the face 6, thereby changing the position of the beam slab 8 in the tunnel 3 without changing the length of the beam slab 8.

[0055] Furthermore, the beam plate 8 is connected to the arch frame 7 through a lifting assembly, and the lifting assembly is used to adjust the distance between the beam plate 8 and the arch frame 7. Specifically, the lifting block 13 is arranged at the bottom of the lifting assembly, and the top of the lifting assembly is connected to the arch frame 7. By adjusting the height of the lifting assembly, the distance between the beam plate 8 and the arch frame 7 can be adjusted. Preferably, the lifting assembly includes a lead screw.

[0056] As another preferred embodiment, the telescopic cylinder 4 is connected to the dust removal cylinder on the dust removal vehicle 2 through the curved cylinder 14, wherein the connection between the curved cylinder 14 and the telescopic cylinder 4 is also detachably connected to the beam 8. By detachably connecting the connection between the curved cylinder 14 and the telescopic cylinder 4 and the beam 8, the connection position of the curved cylinder 14 on the beam 8 can be adjusted according to the adjustment of the position of the telescopic cylinder 4, so as to adjust the position of the telescopic cylinder 4. Preferably, the telescopic cylinder 4 and the dust removal cylinder are detachably connected to the curved cylinder 14 to facilitate the arrangement of the telescopic cylinder 4 in the tunnel 3.

[0057] As another preferred embodiment, see Figure 6 and 7The electric drive mechanism includes a drive frame 15, a second sliding assembly, a driving wheel 16 and a driving part 17. The drive frame 15 is connected to the rigid cylinder 5. The second sliding assembly is arranged on the drive frame 15 and is slidably connected to the beam plate 8. The driving wheel 16 is arranged on the drive frame 15 and can move along the length direction of the beam plate 8. The driving part 17 is drivingly connected to the driving wheel 16 and is used to drive the driving wheel 16 to move along the length direction of the beam plate 8. The driving part 17 drives the driving wheel 16 to slide on the beam plate 8, so that the drive frame 15 connected to the driving wheel 16 moves relative to the beam plate 8, thereby realizing that the rigid cylinder 5 drives the telescopic cylinder 4 to move relative to the beam plate 8; the second sliding assembly on the drive frame 15 can support the drive frame 15 and the beam plate 8, and move on the beam plate 8 with the driving wheel 16, thereby enabling the drive frame 15 to move in a stable state. As a preferred embodiment, the drive frame 15 is detachably connected to the rigid cylinder 5 through the fastening assembly 12 to enhance the connection flexibility between the drive frame 15 and the rigid cylinder 5.

[0058] Furthermore, when a slide rail is provided along the length direction of the beam plate 8, the second sliding assembly includes a second connecting member 18 and a second pulley 19, and the second connecting member 18 is connected to the driving frame 15; the second pulley 19 is rotatably connected to the second connecting member 18 and is slidably connected to the slide rail. The second pulley 19 is slidably connected to the slide rail, so that the second pulley 19 can move on the beam plate 8 along with the movement of the driving wheel 16. Specifically, when the beam plate 8 is formed by connecting a plurality of I-beams, the two second pulleys 19 are slidably connected to the two sides of the I-beams, respectively, to achieve a sliding connection between the second sliding assembly and the beam plate 8.

[0059] The second sliding assembly further includes a third connecting member 20 and two directional wheels 21. The third connecting member 20 is disposed on the driving frame 15 and is disposed close to the second connecting member 18. The two directional wheels 21 are disposed on the third connecting member 20 and are located on both sides of the beam plate 8. The two directional wheels 21 are also slidably connected to both sides of the beam plate 8. By arranging two directional wheels 21 on both sides of the beam plate 8 and making the two directional wheels 21 slidably connected to both sides of the beam plate 8, the swing of the driving frame 15 on the beam plate 8 can be limited.

[0060] Furthermore, the driving unit 17 includes a motor disposed on the driving frame 15 and a reducer for connecting the output shaft of the motor to the driving wheel 16. By preferably configuring the driving unit 17 as a motor and a reducer, the position adjustment of the rigid cylinder 5 by the driving unit 17 is electrically controlled.

[0061] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A roadheader dust removal system, characterized in that: include: A positive pressure air cylinder (1) is arranged on one side of the tunnel (3); A dust removal vehicle (2) is provided at the other side of the tunnel (3); A negative pressure air cylinder, comprising a telescopic cylinder (4) connected to the dust removal cylinder of the dust removal vehicle (2), and a rigid cylinder (5) connected to the telescopic cylinder (4), wherein the air suction port on the rigid cylinder (5) faces the tunnel face (6) of the tunnel (3); An electric drive mechanism, drivingly connected to the rigid cylinder (5), and used to drive the rigid cylinder (5) to move in the tunnel (3) to adjust the distance between the rigid cylinder (5) and the tunnel face (6); Also includes: A beam plate (8) connected to the top of the arch frame (7) in the tunnel (3), the telescopic cylinder (4) being slidably connected to the beam plate (8) via a first sliding assembly; The beam plate (8) is connected to the arch frame (7) via a lifting assembly, and the lifting assembly is used to adjust the distance between the beam plate (8) and the arch frame (7); The electric drive mechanism comprises: A driving frame (15) connected to the rigid cylinder (5); A second sliding assembly is disposed on the driving frame (15) and is slidably connected to the beam plate (8); A driving wheel (16) is arranged on the driving frame (15) and is movable along the length direction of the beam plate (8); A driving part (17) is drivingly connected to the driving wheel (16) and is used to drive the driving wheel (16) to move along the length direction of the beam plate (8); When a slide rail is provided along the length direction of the beam plate (8), the second sliding assembly comprises: A second connecting member (18) connected to the driving frame (15); The second pulley (19) is rotatably connected to the second connecting member (18) and is slidably connected to the slide rail.

2. The roadheader dust removal system according to claim 1, characterized in that: The first sliding assembly comprises: A tube hoop (9) sleeved on the outside of the telescopic tube (4); A first pulley (10) slidably connected to the beam plate (8); A first connecting member (11) is connected to the tube hoop (9) and the first pulley (10) respectively.

3. The roadheader dust removal system according to claim 1, characterized in that: The beam plate (8) comprises a plurality of I-beams connected by a fastening assembly (12), wherein the plurality of I-beams are connected to the arch frame (7) by a lifting block (13).

4. The roadheader dust removal system according to claim 1, characterized in that: The telescopic cylinder (4) is connected to the dust removal cylinder on the dust removal vehicle (2) via a bent cylinder (14), wherein the connection between the bent cylinder (14) and the telescopic cylinder (4) is also detachably connected to the beam plate (8).

5. The roadheader dust removal system according to claim 1, characterized in that: The second sliding assembly also includes: a third connecting member (20) disposed on the driving frame (15) and close to the second connecting member (18); Two directional wheels (21) are provided on the third connecting member (20) and are located on both sides of the beam plate (8). The two directional wheels (21) are also slidably connected to both sides of the beam plate (8) respectively.

6. The roadheader dust removal system according to claim 1, characterized in that: The driving unit (17) comprises a motor arranged on the driving frame (15), and a reducer for connecting the output shaft of the motor to the driving wheel (16).

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