CN218934429U

CN218934429U - TBM slag removal system and TBM

Info

Publication number: CN218934429U
Application number: CN202222712463.3U
Authority: CN
Inventors: 穆书锋; 马瑞; 潘守辰; 毛晴松; 王露露; 鲁义强; 刘志飞; 马鹏凛; 李俊志
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-04-28
Anticipated expiration: 2032-10-14

Abstract

The utility model relates to the technical field of TBM auxiliary slag removal, in particular to a TBM slag removal system and a TBM. The TBM slag removal system comprises a rear matched trailer and a slag conveyer, wherein the rear matched trailer is provided with a rear matched belt conveyor for conveying slag out of a hole; the slag conveyer is fixed at the front part of the rear matched trailer through a fixing frame, the rear end of the slag conveyer is positioned above the rear matched belt conveyor, the front end of the slag conveyer is provided with a slag removing machine, the slag removing machine comprises a bottom shell and slag removing wheels rotationally assembled in the bottom shell, and the slag removing wheels are used for removing slag at the bottom of a tunnel into the bottom shell and conveying the slag to the slag conveyer. Under the premise of not influencing slag transportation of a main machine belt conveyor and a rear matched belt conveyor, the slag raking machine is matched with the slag conveyer so as to convey slag to the rear matched belt conveyor, so that auxiliary cleaning of accumulated slag below a TBM main beam is realized, the travel of a rear matched trailer is avoided, the TBM is enabled to realize step change to enter the next tunneling cycle as soon as possible, and the construction efficiency is improved.

Description

TBM slag removal system and TBM

Technical Field

The utility model relates to the technical field of TBM auxiliary slag removal, in particular to a TBM slag removal system and a TBM.

Background

The TBM often encounters conditions such as broken faults, support collapse and the like in the tunneling process, and the section of a tunnel formed by the TBM is generally circular, so that the slag is easy to deposit at the bottom of the tunnel under the action of gravity. Therefore, the slag deposited at the bottom of the tunnel needs to be removed to ensure the normal running of the rear matched trailer.

For the problem of slag accumulation at the bottom of tunnels with different excavation diameters, the slag removal space under the TBM main beam with larger diameter is larger. For TBM above 10 m, high-efficiency slag removal can be performed by a small excavator; for TBM with 8 m-class diameter, slag removal can be realized through a mechanical arm, for example, chinese patent application publication No. CN217270209U discloses a TBM slag removal device, which is arranged on a connecting bridge at the rear end of a TBM main beam, and a slag removal belt conveyor and a slag discharge belt conveyor are arranged on the connecting bridge. When encountering unfavorable geology such as rock burst, surrounding rock local crushing, the dregs drop and pile up in tunnel bottom, and the scarfing cinder device utilizes the scraper bowl on it to shovel up the dregs and place on scarfing cinder belt feeder, and rethread slag belt feeder carries out.

For a TBM with the excavation diameter of 4-6 m, the working space below a main beam is limited, and the movement range of the bucket in the technology is larger during adjustment, and a larger movement space is needed, so that the slag removing device cannot be used in a small-diameter TBM. At present, slag soil can be cleaned only by manually utilizing a shovel, so that the labor intensity is high, the efficiency is low, the travel of a rear matched trailer is seriously influenced, and the next cycle tunneling stroke of the small-diameter TBM is restricted.

Disclosure of Invention

The utility model aims to provide a TBM slag removal system, which solves the technical problems of high labor intensity and low efficiency caused by manually cleaning slag soil by a small-diameter TBM in the prior art; it is also an object of the present utility model to provide a TBM to address the above problems.

In order to achieve the purpose, the technical scheme of the TBM slag removal system is as follows:

the TBM slag removal system comprises a rear matched trailer and a slag conveyer, wherein the rear matched trailer is provided with a rear matched belt conveyor for conveying slag out of a hole; the slag conveyer is fixed at the front part of the rear matched trailer through a fixing frame, the rear end of the slag conveyer is positioned above the rear matched belt conveyor, and the front end of the slag conveyer is connected with a slag skimming machine.

The beneficial effects are that: under the premise of not influencing slag transportation of a main machine belt conveyor and a rear matched belt conveyor, the slag raking machine is matched with the slag conveyer so as to convey slag to the rear matched belt conveyor, so that auxiliary cleaning of accumulated slag below a TBM main beam is realized, the travel of a rear matched trailer is avoided, the TBM is enabled to realize step change to enter the next tunneling cycle as soon as possible, and the construction efficiency is improved. The slag raking machine has smaller size in the height direction, can raking accumulated slag at the bottom of the tunnel into the slag conveyor under the condition of not occupying more space, and is suitable for small-diameter tunnel excavation.

As a further improvement, the slag removing machine comprises a bottom shell and a slag removing wheel rotatably assembled in the bottom shell, wherein the slag removing wheel is used for removing slag at the bottom of the tunnel into the bottom shell and conveying the slag to the slag conveyor.

The beneficial effects are that: the slag removing wheel can remove slag all the time, and is beneficial to improving the slag removing efficiency.

As a further improvement, two slag skimming wheels are arranged at intervals along the width direction of the slag conveyor, and the rotation directions of the two slag skimming wheels are opposite to cooperatively skim the slag at the bottom of the tunnel into the bottom shell and convey the slag to the slag conveyor.

As a further improvement, the slag removing machine is hinged at the front end of the slag conveyer, and a pitching adjusting device for driving the slag removing machine to pitch is arranged between the slag removing machine and the slag conveyer.

The beneficial effects are that: by the design, the distance between the slag removing machine and the ground can be adjusted, and universality is improved.

As a further improvement, the pitching adjusting device is a pitching adjusting oil cylinder or an electric push rod.

The beneficial effects are that: by the design, the pitching angle of the slag removing machine can be automatically adjusted, so that the slag removing machine is simple and convenient to adjust.

As a further improvement, the TBM slag removal system comprises a TBM main beam, wherein a main machine belt conveyor for conveying slag soil from a cutter head to a rear supporting belt conveyor is arranged on the TBM main beam, and a slag guide plate for guiding the slag soil on the main machine belt conveyor to fall on the rear supporting belt conveyor is arranged on the rear supporting belt conveyor.

The beneficial effects are that: by the design, when the rear part of the TBM main beam is dislocated with the rear supporting belt conveyor due to TBM turning, the slag can be guided onto the rear supporting belt conveyor by utilizing the slag guide plate, so that the slag is prevented from falling to the bottom of the tunnel.

As a further improvement, two slag guide plates are arranged at intervals along the width direction of the rear matched belt conveyor, and the two slag guide plates are in an inverted eight shape.

The beneficial effects are that: by the design, the TBM can guide the dregs to the rear matched belt conveyor no matter in a left turn or a right turn.

As a further improvement, the fixing frame is a bracket or a hanging bracket.

The beneficial effects are that: by the design, the stability of the slag conveyor in conveying the slag can be guaranteed.

As a further improvement, the muck conveyor is a double-chain scraper conveyor, a belt conveyor or a screw conveyor.

In order to achieve the above purpose, the technical scheme of the TBM of the utility model is as follows:

the TBM comprises a shield body and a TBM slag removal system, wherein the TBM slag removal system comprises a rear matched trailer and a slag conveyor, and the rear matched trailer is provided with a rear matched belt conveyor for conveying slag out of a hole; the slag conveyer is fixed at the front part of the rear matched trailer through a fixing frame, the rear end of the slag conveyer is positioned above the rear matched belt conveyor, and the front end of the slag conveyer is connected with a slag skimming machine.

As a further improvement, the fixing frame is a bracket or a hanging bracket.

Drawings

FIG. 1 is a schematic diagram of a TBM slag removal system of the present utility model;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the slag removing machine of FIG. 1;

FIG. 4 is a schematic view of the muck conveyor of FIG. 1;

fig. 5 is a partial top view of the muck conveyor of fig. 4.

In the figure: 11. a TBM main beam; 12. a pitching adjusting oil cylinder; 13. a main machine belt conveyor; 14. a slag removing machine; 15. a slag guide plate; 16. a muck conveyor; 17. a bracket; 18. a rear matched belt conveyor; 19. a rear mating trailer; 20. a bottom case; 21. slag skimming wheels; 22. a chain tensioner; 23. a spiral bevel gear reducer; 24. a chain; 25. a scraper.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "front," "rear," "upper," "lower," "left," and "right" are based on the orientation and positional relationship shown in the drawings, and are merely for convenience of description of the utility model, and do not denote that the device or component in question must have a particular orientation, and thus should not be construed as limiting the utility model.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

Example 1 of TBM slag removal system of the present utility model:

as shown in fig. 1, the TBM slag removal system comprises a TBM main beam 11 and a rear matched trailer 19, wherein the rear matched trailer 19 is connected to the rear part of the TBM main beam 11 through a traction cylinder; the rear supporting trailer 19 is provided with a rear supporting belt conveyor 18 for transporting the dregs outside the hole, and the TBM main beam 11 is provided with a main machine belt conveyor 13 for transporting the dregs from the cutter head to the rear supporting belt conveyor 18.

In the embodiment, a bracket 17 is arranged at the front part of the rear matched trailer 19, and the bracket 17 forms a fixed frame; the bracket 17 is provided with a slag conveyer 16, the rear end of the slag conveyer 16 is positioned above the rear matched belt conveyer 18, the front end of the slag conveyer 16 is connected with a slag removing machine 14, and the slag removing machine 14 and the slag conveyer 16 jointly form an auxiliary slag removing device.

As shown in fig. 3, the slag-raking machine 14 includes a bottom housing 20 and a slag-raking wheel 21 rotatably mounted within the bottom housing 20. In other embodiments, the skimming wheel may be replaced by a skimming plate that is swingably mounted within the bottom shell.

In this embodiment, two skimming wheels 21 are arranged at intervals along the width direction of the muck conveyor 16, and both are driven by motors and are turned in opposite directions, so as to scoop muck at the bottom of the tunnel into the bottom shell 20 and send the muck onto the muck conveyor 16. In other embodiments, the skimming wheel is provided with one and cylindrical structure, with the axis of rotation of the skimming wheel extending along the width direction of the muck conveyor.

In this embodiment, the bottom case 20 is made of a wear-resistant steel plate having a certain thickness to ensure the strength of the bottom case 20.

As shown in fig. 2, the slag removing machine 14 is hinged to the front end of the slag conveyor 16, and a pitching adjusting device for driving the slag removing machine 14 to pitch is arranged between the slag removing machine 14 and the slag conveyor 16. Preferably, the pitch adjusting means is a pitch adjusting cylinder 12, and the pitch adjusting cylinders 12 are arranged at intervals in the tunnel width direction. In other embodiments, the pitch adjustment device may be a power pushrod.

In this embodiment, two sides of the rear supporting trailer 19 in the width direction are respectively provided with slag guide plates 15, and the two slag guide plates 15 are in an inverted splayed shape and are used for guiding the slag on the main machine belt conveyor 13 to fall on the rear supporting belt conveyor 18. By means of the design, when the rear part of the TBM main beam 11 and the rear matched belt conveyor are dislocated due to TBM turning, slag can be guided onto the rear matched belt conveyor by the slag guide plate 15, and the slag is prevented from falling to the bottom of a tunnel. In other embodiments, the slag guide plate may be provided only on the right or left side if the TBM is tunneled while turning only left or right.

As shown in fig. 4 and 5, the muck conveyor 16 is a double-chain scraper conveyor, and the muck conveyor 16 includes two chains 24 and a plurality of scrapers 25 provided between the two chains 24, the chains 24 being driven by a spiral bevel gear reducer 23. Among them, the spiral bevel gear reducer 23 is compact in structure. In other embodiments, the muck conveyor may be a belt conveyor or a screw conveyor.

In this embodiment, the front end of the muck conveyor 16 is lower than the rear end of the muck conveyor 16, a spiral bevel gear reducer 23 is disposed at the rear end of the muck conveyor 16, and a chain tensioner 22 is disposed at the front end of the muck conveyor 16 to adjust the tensioning degree of the chain 24. It should be noted that the spiral bevel gear reducer 23 and the chain tensioner 22 are existing mature products and will not be described in detail here.

The TBM slag removal system is particularly suitable for small-diameter mining TBMs.

In the normal TBM tunneling process, the dregs excavated by the cutterhead are transported to the rear part of the TBM main beam 11 from the cutterhead by the main machine belt conveyor 13, and fall on the rear matched belt conveyor 18 from the rear part of the main machine belt conveyor 13; the rear mating belt 18 then transports the muck out of the hole.

When the TBM encounters a broken fault, slag below the TBM main beam 11 is accumulated at the bottom of a tunnel due to gravity, most of the slag can be automatically collected on the bottom shell 20 of the slag-raking machine 14 through the slag-raking wheels 21 on the slag-raking machine 14, and for some slag which cannot be automatically collected at dead angles of the slag-raking machine 14, the slag can be pushed and shoveled onto the slag-raking machine 14 through manual intervention; the slag remover 14 then conveys the collected slag to the rear mating belt 18 via the slag conveyor 16 and finally out of the tunnel via the rear mating belt 18.

The TBM slag removal system disclosed by the utility model utilizes the cooperation of the slag removing machine and the slag soil conveyor on the premise of not influencing the slag transportation of the main machine belt conveyor and the rear matched belt conveyor, so that slag soil is conveyed to the rear matched belt conveyor, the auxiliary cleaning of accumulated slag below a TBM main beam is realized, the travelling of a rear matched trailer is prevented from being influenced by accumulated slag, the TBM is enabled to realize the step change to enter the next tunneling cycle as soon as possible, and the construction efficiency is improved. And the muck conveyor is arranged on the bracket, so that the stability of the muck conveyor in conveying muck can be ensured.

Example 2 of TBM slag removal system of the present utility model:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the slag removing machine is hinged to the front end of the slag conveyor, and a pitch adjusting cylinder for driving the slag removing machine to pitch is provided between the slag removing machine and the slag conveyor. In the embodiment, a pitching adjusting oil cylinder is not arranged, and the slag removing machine is fixed at the front end of the slag conveyer.

Example 3 of TBM slag removal system of the present utility model:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the main beam of the TBM is provided with a main belt conveyor for conveying the residue soil backward from the cutterhead. In the embodiment, a main machine belt conveyor is not arranged on the TBM main beam, slag soil cut by a cutter head directly slides under the main beam, and a slag removing machine and a slag soil conveyor are used as main slag removing devices.

Example 4 of TBM slag removal system of the present utility model:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the rear supporting trailer is provided with a slag guide plate for guiding the slag on the main machine belt conveyor to fall on the rear supporting belt conveyor. In this embodiment, no slag guide plate is arranged on the rear supporting trailer, and the rear supporting belt conveyor has a larger width.

Example 5 of TBM slag removal system of the present utility model:

the difference between this embodiment and embodiment 1 is that in embodiment 1, the fixing frame is a bracket. In this embodiment, the fixing frame is a hanger.

Examples of TBM of the utility model: the TBM in this embodiment includes a shield body and a TBM slag removal system, and the TBM slag removal system has the same structure as any one of embodiments 1 to 5 of the TBM slag removal system described above, and will not be described in detail herein.

The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.

Claims

The TBM slag removal system comprises a rear matched trailer (19) and a slag conveyor (16), wherein the rear matched trailer (19) is provided with a rear matched belt conveyor (18) for conveying slag out of a hole; the slag conveyer is fixed at the front part of a rear matched trailer (19) through a fixing frame, and the rear end of the slag conveyer (16) is positioned above a rear matched belt conveyor (18), and is characterized in that the front end of the slag conveyer (16) is connected with a slag removing machine (14).
2. The TBM slag removal system of claim 1 wherein the slag remover (14) includes a bottom shell (20) and a slag removing wheel (21) rotatably mounted within the bottom shell (20), the slag removing wheel (21) being adapted to remove slag from the bottom of the tunnel into the bottom shell (20) and onto the slag conveyor (16).
3. TBM slag removal system as in claim 2, characterized in that the skimming wheels (21) are arranged at intervals along the width direction of the slag conveyor (16), the rotation directions of the two skimming wheels (21) being opposite to cooperate to scoop the slag at the bottom of the tunnel into the bottom shell (20) and onto the slag conveyor (16).
4. A TBM slag removal system as claimed in any one of claims 1 to 3 wherein the slag remover (14) is hinged to the front end of the slag conveyor (16), and a pitch adjustment means for driving the slag remover (14) in pitch is provided between the slag remover (14) and the slag conveyor (16).
5. The TBM slag removal system of claim 4, wherein the pitch adjustment device is a pitch adjustment ram (12) or an electric putter.
6. A TBM slag removal system as claimed in any one of claims 1 to 3, characterized in that the TBM slag removal system comprises a TBM main beam (11), a main machine belt conveyor (13) for conveying slag from a cutterhead to a rear supporting belt conveyor (18) is arranged on the TBM main beam (11), and a slag guide plate (15) for guiding slag on the main machine belt conveyor (13) to fall on the rear supporting belt conveyor (18) is arranged on the rear supporting trailer (19).
7. The TBM slag removal system of claim 6, wherein two slag guide plates (15) are arranged at intervals along the width direction of the rear matched belt conveyor (18), and the two slag guide plates (15) are inverted-splayed.
8. A TBM slag removal system as in any of claims 1 to 3, characterized in that the mount is a bracket (17) or a hanger.
9. A TBM slag removal system as in any of claims 1 to 3, characterized in that the slag conveyor (16) is a double chain scraper conveyor, a belt conveyor or a screw conveyor.
TBM comprising a shield body and a TBM slag removal system, characterized in that the TBM slag removal system is a TBM slag removal system according to any of claims 1 to 9.