Slag removal device and open type tunnel boring machine comprising same

Abstract

The utility model relates to the technical field of tunnel boring, and particularly provides a slag removal device and an open type tunnel boring machine comprising the slag removal device. The slag removing device comprises a connecting base, a lifting platform, a support, a slag removing hopper assembly and a driving device, the support is arranged on the rear matched trailer through the connecting base, the lifting platform is arranged on the support in a sliding mode, the slag removing hopper assembly is arranged on the lifting platform, and the driving device is connected with the lifting platform. The lifting platform is used for driving the lifting platform to slide along the bracket to realize lifting adjustment of the slag removal hopper assembly; and the slag guiding assembly is arranged on the rear matched trailer and used for guiding the slag conveyed by the slag removing hopper assembly into the belt conveyor. The slag removal device provided by the utility model is compact and simple in structure and relatively low in cost, and is suitable for heading machines with medium and small diameters; through cooperation of the lifting platform, the support, the residue removing hopper assembly and the driving device, residue soil is transferred to the belt conveyor and then conveyed to the outside of a hole, and the residue removing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel boring, in particular to a slag cleaning device and an open tunnel boring machine containing the slag cleaning device. Background Art

[0002] Open-type rock tunnel boring machines (TBMs) are widely used in tunnel construction, offering high efficiency, environmental friendliness, and safety. Because the surrounding rock behind the shield of an open TBM is exposed, when the TBM passes through unfavorable geological conditions such as fractured zones, the surrounding rock behind the shield is easily broken, causing a large amount of debris to fall off. This accumulation of debris at the bottom of the main beam can hinder the TBM's progress if not promptly cleared.

[0003] Currently, the common method for removing accumulated slag from the bottom of the main beam is to manually shovel the slag and then use a bucket to transport it outside the tunnel. A few methods use excavator arms and small belt conveyors. Other methods involve lifting the slag bucket using a lifting cylinder and pulley combination, then automatically tipping the slag onto a belt conveyor using a tilting cylinder. Using a bucket to transport the slag outside the tunnel is labor-intensive and inefficient. Using an excavator arm and a small belt conveyor requires a large space and is unsuitable for small and medium-diameter tunnel boring machines. Lifting the slag bucket using a lifting cylinder and pulley, and tipping the slag onto a belt conveyor using a tilting cylinder, is complex and expensive.

[0004] Based on the above, there is an urgent need to provide a slag cleaning device and an open tunnel boring machine including the slag cleaning device to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a slag cleaning device and an open tunnel boring machine including the slag cleaning device. The specific technical solution is as follows:

[0006] A slag cleaning device comprises a connecting seat, a lifting platform, a bracket, a slag cleaning bucket assembly and a driving device, wherein the bracket is arranged on a rear supporting trailer via the connecting seat, the lifting platform is slidably arranged on the bracket, the slag cleaning bucket assembly is arranged on the lifting platform, and the driving device is connected to the lifting platform and is used to drive the lifting platform to slide on the bracket to realize the lifting and lowering adjustment of the slag cleaning bucket assembly;

[0007] It also includes a slag guiding assembly, which is arranged on the rear supporting trailer and is used to guide the slag transported by the slag cleaning bucket assembly into the belt conveyor.

[0008] Furthermore, the bracket includes a bracket body, and the bracket body is provided with two rails in parallel along the length direction; and a drive device mounting seat is provided at the end of the bracket body.

[0009] Furthermore, the lifting platform includes a frame, on which rollers matching the track are provided; and the slag cleaning bucket assembly is installed on the frame.

[0010] Furthermore, limiting devices are respectively provided at both ends of the track, and the limiting devices are used to limit the travel of the lifting platform on the bracket.

[0011] Furthermore, the driving device includes a winch and a steel wire rope, the winch is fixed on the driving device mounting seat, one end of the steel wire rope is connected to the winch, and the other end of the steel wire rope is connected to the lifting platform.

[0012] Furthermore, the slag cleaning hopper assembly includes a slag cleaning hopper, a slag unloading door is provided on the side of the slag cleaning hopper, and the slag unloading door is hinged to the slag cleaning hopper; a slag unloading door opening and closing device is provided on the slag cleaning hopper, and the slag unloading door opening and closing device is used to realize the opening and closing of the slag unloading door.

[0013] Furthermore, the slag unloading door includes an upper slag unloading door and a lower slag unloading door, the upper part of the upper slag unloading door is hinged to the upper part of the side of the slag cleaning hopper, and the lower part of the lower slag unloading door is hinged to the lower part of the side of the slag cleaning hopper.

[0014] Furthermore, the bottom of the slag cleaning hopper is an inclined surface, and the inclination angle of the inclined surface is greater than the slag friction angle.

[0015] Furthermore, the slag guiding assembly includes a slag dropping platform and a slag guiding trough. The slag dropping platform is arranged on the rear supporting trailer and is used to filter the slag poured out from the slag cleaning bucket; the slag guiding trough is arranged below the slag dropping platform, and the output end of the slag guiding trough corresponds to the belt conveyor.

[0016] An open tunnel boring machine includes a main beam, a rear supporting trailer and a belt conveyor, wherein the main beam is connected to the rear supporting trailer, the belt conveyor is arranged in the middle of the rear supporting trailer, and further includes the slag cleaning device as described above, which is symmetrically arranged on both sides of the rear supporting trailer and is used to transfer slag to the belt conveyor.

[0017] The application of the technical solution of the utility model has the following beneficial effects:

[0018] (1) The present invention provides a slag cleaning device, comprising a connecting seat, a lifting platform, a bracket, a slag cleaning bucket assembly and a driving device, wherein the bracket is arranged on a rear supporting trailer through the connecting seat, the lifting platform is slidingly arranged on the bracket, the slag cleaning bucket assembly is arranged on the lifting platform, and the driving device is connected to the lifting platform, and is used to drive the lifting platform to slide on the bracket to achieve the lifting and lowering adjustment of the slag cleaning bucket assembly; it also includes a slag guiding assembly, which is arranged on the rear supporting trailer and is used to guide the slag transported by the slag cleaning bucket assembly into a belt conveyor. The slag cleaning device provided by the present invention has a compact structure, is suitable for small and medium diameter tunnel boring machines, has a simple structure and is relatively low in cost; through the cooperation of the lifting platform, the bracket, the slag cleaning bucket assembly and the driving device, the slag is transferred to the belt conveyor and then transported outside the tunnel, and the slag cleaning efficiency is high.

[0019] (2) In the present invention, a limiting device is provided at each end of the track, and the limiting device is used to limit the travel of the lifting platform on the bracket to prevent the lifting platform from sliding off the track.

[0020] (3) In the present invention, the slag unloading door includes an upper slag unloading door and a lower slag unloading door. Two slag unloading doors are provided, and the slag unloading speed can be adjusted by controlling the number of openings of the slag unloading doors.

[0021] (4) In the present invention, a lower slag discharge door limit block is provided on the lower slag discharge door so that the lower slag discharge door is coplanar with the bottom surface of the slag cleaning hopper after opening, so that the lower slag discharge door plays the role of guiding slag.

[0022] (5) In the present invention, the bottom of the slag cleaning bucket is an inclined surface, and the inclination angle of the inclined surface is greater than the friction angle of the slag, which facilitates the smooth discharge of the slag from the slag cleaning bucket.

[0023] (6) In this embodiment, the slag guide assembly includes a slag dropping platform and a slag guiding trough. The slag dropping platform is arranged on the rear supporting trailer and is used to filter the slag poured out from the slag bucket, protect the belt conveyor from the impact of large pieces of slag, and extend the service life of the belt.

[0024] (7) In this embodiment, the slag cleaning devices are symmetrically arranged on both sides of the rear supporting trailer, which facilitates timely cleaning of slag and improves the efficiency of slag cleaning.

[0025] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of the slag cleaning device in an embodiment of the present invention (the slag guide assembly is not shown);

[0028] Figure 2 is a schematic diagram of the structure of the bracket;

[0029] Figure 3 It is a structural diagram of the lifting platform;

[0030] Figure 4 It is a structural diagram of the slag hopper assembly;

[0031] Figure 5 This is a schematic diagram of the state where the slag discharge door under the slag hopper is open;

[0032] Figure 6 This is the installation cross-section diagram of the slag cleaning device;

[0033] Figure 7 It is a schematic diagram of an open tunnel boring machine in an embodiment of the present utility model;

[0034] in:

[0035] 1. Connecting seat;

[0036] 2. Lifting platform, 2.1. Frame, 2.2. Roller;

[0037] 3. Bracket, 3.1. Bracket body, 3.2. Track, 3.3. Drive device mounting base, 3.4. Limit device;

[0038] 4. Slag cleaning hopper assembly, 4.1. Slag cleaning hopper, 4.2. Slag discharge door, 4.2.1. Upper slag discharge door, 4.2.2. Lower slag discharge door, 4.3. Slag discharge door opening and closing device, 4.4. Lower slag discharge door limit block;

[0039] 5. Drive device, 5.1. Winch, 5.2. Wire rope;

[0040] 6. Rear supporting trailer;

[0041] 7. Slag guide assembly, 7.1. Slag drop platform, 7.2. Slag guide trough;

[0042] 8. Belt conveyor;

[0043] 9. Main beam. DETAILED DESCRIPTION

[0044] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0047] Example

[0048] See also Figure 1-Figure 7 This embodiment provides a slag cleaning device, including a connecting seat 1, a lifting platform 2, a bracket 3, a slag cleaning bucket assembly 4 and a driving device 5. The bracket 3 is set on the rear supporting trailer 6 through the connecting seat 1, the lifting platform 2 is slidably set on the bracket 3, the slag cleaning bucket assembly 4 is set on the lifting platform 2, and the driving device 5 is connected to the lifting platform 2, for driving the lifting platform 2 to slide on the bracket 3 to realize the lifting and lowering adjustment of the slag cleaning bucket assembly 4; it also includes a slag guiding assembly 7, which is set on the rear supporting trailer 6 and is used to guide the slag transported by the slag cleaning bucket assembly 4 into a belt conveyor 8, and the belt conveyor 8 transports the slag to the outside of the tunnel.

[0049] In this embodiment, see Figure 2 The bracket 3 includes a bracket body 3.1, and the bracket body 3.1 is provided with two rails 3.2 in parallel along the length direction; a drive device mounting seat 3.3 is provided at the end of the bracket body 3.1.

[0050] In this embodiment, see Figure 3 The lifting platform 2 includes a frame 2.1, on which rollers 2.2 are provided that match rails 3.2. Preferably, the rails 3.2 are grooved, and the rollers 2.2 are embedded in and rollable within the rails 3.2. The slag hopper assembly 4 is mounted on the frame 2.1. In this embodiment, the frame 2.1 is L-shaped, and the slag hopper assembly 4 is fixed to the frame 2.1 by bolts.

[0051] Preferably, see Figure 2 A limiting device 3.4 is provided at both ends of the track 3.2, and the limiting device 3.4 is used to limit the travel of the lifting platform 2 on the track 3.2 of the bracket 3 to prevent the lifting platform 2 from sliding out of the track 3.2; preferably, the limiting device 3.4 adopts a limiting block.

[0052] See also Figure 1The driving device 5 includes a winch 5.1 and a wire rope 5.2. The winch 5.1 is fixed on the driving device mounting seat 3.3. One end of the wire rope 5.2 is connected to the winch 5.1, and the other end of the wire rope 5.2 is connected to the frame 2.1 of the lifting platform 2. When the winch 5.1 rotates, the lifting platform 2 is driven to slide up and down in the track 3.2 through the wire rope 5.2, and the slag bucket assembly 4 fixed on the lifting platform 2 rises and falls synchronously.

[0053] In this embodiment, Figure 4 and Figure 5 The slag hopper assembly 4 includes a slag hopper 4.1, a slag discharge door 4.2 is provided on the side of the slag hopper 4.1, and the slag discharge door 4.2 is hinged to the slag hopper 4.1; a slag discharge door opening and closing device 4.3 is provided on the slag hopper 4.1, and the slag discharge door opening and closing device 4.3 is used to realize the opening and closing of the slag discharge door 4.2. Preferably, the slag discharge door opening and closing device 4.3 includes a handle and a stopper, and the stopper is rotatably connected to the slag hopper 4.1. The handle is connected to the stopper. Turning the handle drives the stopper to rotate, and the stopper presses the slag discharge door 4.2 to achieve the locking and closing of the slag discharge door 4.2; when the slag discharge door 4.2 needs to be opened, the handle is turned in the opposite direction to drive the stopper to rotate, and the stopper moves away from the slag discharge door 4.2, thereby unlocking and opening the slag discharge door 4.2. In this embodiment, the slag discharge door opening and closing device 4.3 is provided on the left and right sides of the slag discharge door 4.2.

[0054] In this embodiment, the slag discharge door 4.2 includes an upper slag discharge door 4.2.1 and a lower slag discharge door 4.2.2. The upper portion of the upper slag discharge door 4.2.1 is connected to the upper portion of the side of the slag hopper 4.1 by a pin shaft, and the upper slag discharge door 4.2.1 can be turned up and down; the lower portion of the lower slag discharge door 4.2.2 is connected to the lower portion of the side of the slag hopper 4.1 by a pin shaft, and the lower slag discharge door 4.2.2 can be turned up and down. Preferably, the lower slag discharge door 4.2.2 is provided with a A lower slag discharge door limit block 4.4 is provided, which is used to limit the opening angle of the lower slag discharge door 4.2.2. When the lower slag discharge door 4.2.2 is opened to be coplanar with the bottom of the slag cleaning hopper 4.1, the lower slag discharge door limit block 4.4 abuts against the bottom of the slag cleaning hopper 4.1 to prevent the lower slag discharge door 4.2.2 from continuing to flip down and open. The lower slag discharge door 4.2.2 is coplanar with the bottom of the slag cleaning hopper 4.1, so that the lower slag discharge door 4.2.2 plays a guiding role for the slag.

[0055] In this embodiment, see Figure 4 and Figure 5 The bottom of the slag cleaning bucket 4.1 is an inclined surface, and the inclination angle of the inclined surface is greater than the friction angle of the slag soil, so that the slag and stone can slide out of the slag cleaning bucket 4.1 smoothly.

[0056] In this embodiment, see Figure 6The slag guiding assembly 7 includes a slag dropping platform 7.1 and a slag guiding trough 7.2. The slag dropping platform 7.1 is arranged on the rear supporting trailer 6. The slag dropping platform 7.1 is provided with grid holes for filtering the slag soil poured out of the slag cleaning bucket 4.1, and can filter out slag soil that is too large in size; the slag guiding trough 7.2 is arranged below the slag dropping platform 7.1. The output end of the slag guiding trough 7.2 corresponds to the belt conveyor 8. The slag soil filtered by the slag dropping platform 7.1 falls into the slag guiding trough 7.2, is introduced into the belt conveyor 8 through the slag guiding trough 7.2, and is transported to the outside of the tunnel.

[0057] During specific use, in the area between the rear supporting trailer 6 and the main beam 9, the construction workers shovel the slag into the slag bucket 4.1, start the winch 5.1 to drive the slag cleaning assembly 4 to rise along the track 3.2, and as the slag bucket 4.1 moves to the designated position, the slag discharge door opening and closing device 4.3 is opened, the lower slag discharge door 4.2.2 is opened, and the lower slag discharge door 4.2.2 is kept in contact with the bottom of the slag discharge bucket 4.1 through the lower slag discharge door limit block 4.4 on the lower slag discharge door 4.2.2. Utilizing the slope of the bottom of the slag hopper 4.1 (the slope is greater than the friction angle of the slag), the slag slides down the lower slag discharge door 4.2.2 onto the slag discharge platform 7.1. After being filtered by the slag discharge platform 7.1, it flows through the slag guide chute 7.2 into the belt conveyor 8 and is ultimately transported outside the tunnel, completing the slag cleaning process. After the slag hopper 4.1 has finished unloading the slag, the lower slag discharge door 4.2.2 is closed, and the winch 5.1 is activated to move the slag hopper 4.1 downward to the tunnel bottom for the next round of slag cleaning. If the slag becomes stuck or the slag flow rate is too slow during unloading, the upper slag discharge door 4.2.1 can be opened to increase the unloading speed.

[0058] The slag cleaning device provided by the utility model has a compact structure, can be arranged in a small-diameter roadheader, and has strong applicability; it has a simple structure, is easy to operate, and has a low cost.

[0059] See also Figure 7 The present embodiment further provides an open-type tunnel boring machine, comprising a main beam 9, a rear supporting trailer 6 and a belt conveyor 8, wherein the main beam 9 is connected to the rear supporting trailer 6, and the belt conveyor 8 is arranged in the middle of the rear supporting trailer 6. The machine also includes the slag cleaning device as described above, which is symmetrically arranged on both sides of the rear supporting trailer 6. Preferably, the slag cleaning device is arranged at a position close to the main beam 9 at the end of the rear supporting trailer 6 to facilitate cleaning of the slag at the bottom of the main beam 9; the slag cleaning device transfers the slag to the belt conveyor 8 and then transports it outside the tunnel. By using the slag cleaning device, the slag cleaning efficiency is improved.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A slag cleaning device, characterized in that: The utility model comprises a connecting seat (1), a lifting platform (2), a bracket (3), a slag bucket assembly (4) and a driving device (5); the bracket (3) is arranged on a rear supporting trailer (6) through the connecting seat (1); the lifting platform (2) is slidably arranged on the bracket (3); the slag bucket assembly (4) is arranged on the lifting platform (2); the driving device (5) is connected to the lifting platform (2) and is used for driving the lifting platform (2) to slide on the bracket (3) to realize the lifting and lowering adjustment of the slag bucket assembly (4); It also includes a slag guide assembly (7), which is arranged on the rear supporting trailer (6) and is used to guide the slag transported by the slag cleaning bucket assembly (4) into the belt conveyor (8).

2. A slag cleaning device according to claim 1, characterized in that: The bracket (3) comprises a bracket body (3.1), and the bracket body (3.1) is provided with two rails (3.2) in parallel along the length direction; and a drive device mounting seat (3.3) is provided at the end of the bracket body (3.1).

3. A slag cleaning device according to claim 2, characterized in that: The lifting platform (2) comprises a frame (2.1), on which rollers (2.2) matching the track (3.2) are provided; and the slag cleaning hopper assembly (4) is mounted on the frame (2.1).

4. A slag cleaning device according to claim 2, characterized in that: Limiting devices (3.4) are respectively provided at both ends of the track (3.2), and the limiting devices (3.4) are used to limit the travel of the lifting platform (2) on the bracket (3).

5. A slag cleaning device according to claim 2, characterized in that: The driving device (5) comprises a hoist (5.1) and a steel wire rope (5.2); the hoist (5.1) is fixed on the driving device mounting seat (3.3); one end of the steel wire rope (5.2) is connected to the hoist (5.1); and the other end of the steel wire rope (5.2) is connected to the lifting platform (2).

6. A slag cleaning device according to any one of claims 1 to 5, characterized in that: The slag cleaning hopper assembly (4) comprises a slag cleaning hopper (4.1), a slag discharge door (4.2) is provided on the side of the slag cleaning hopper (4.1), and the slag discharge door (4.2) is hinged to the slag cleaning hopper (4.1); a slag discharge door opening and closing device (4.3) is provided on the slag cleaning hopper (4.1), and the slag discharge door opening and closing device (4.3) is used to realize the opening and closing of the slag discharge door (4.2).

7. A slag cleaning device according to claim 6, characterized in that: The slag discharge door (4.2) comprises an upper slag discharge door (4.2.1) and a lower slag discharge door (4.2.2). The upper portion of the upper slag discharge door (4.2.1) is hinged to the upper portion of the side of the slag cleaning hopper (4.1), and the lower portion of the lower slag discharge door (4.2.2) is hinged to the lower portion of the side of the slag cleaning hopper (4.1).

8. A slag cleaning device according to claim 6, characterized in that: The bottom of the slag cleaning hopper (4.1) is an inclined surface, and the inclination angle of the inclined surface is greater than the slag friction angle.

9. A slag cleaning device according to claim 6, characterized in that: The slag guide assembly (7) comprises a slag dropping platform (7.1) and a slag guide trough (7.2); the slag dropping platform (7.1) is arranged on the rear supporting trailer (6) and is used to filter the slag soil poured out from the slag cleaning bucket (4.1); the slag guide trough (7.2) is arranged below the slag dropping platform (7.1), and the output end of the slag guide trough (7.2) corresponds to the belt conveyor (8).

10. An open tunnel boring machine, comprising a main beam (9), a rear supporting trailer (6) and a belt conveyor (8), wherein the main beam (9) is connected to the rear supporting trailer (6), and the belt conveyor (8) is arranged in the middle of the rear supporting trailer (6), characterized in that: It also includes a slag cleaning device according to any one of claims 1 to 9, wherein the slag cleaning device is symmetrically arranged on both sides of the rear supporting trailer (6) and is used to transfer the slag to the belt conveyor (8).

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