Continuous belt conveyor deslagging system for launching of heading machine

Abstract

The utility model discloses a deslagging system of a continuous belt conveyor for launching of a heading machine, relates to the technical field of tunnel construction, and solves the problem that the continuous belt conveyor in the prior art is not applicable to a launching stage since an in-hole mounting space needs to be opened up firstly during mounting. The device comprises a machine tail assembly arranged on a rear matched trailer in a hole, the machine tail assembly is connected with one end of a conveying belt, the other end of the conveying belt is connected with a head assembly movably arranged outside the hole, and a machine body module used for bearing the conveying belt is detachably arranged between the machine tail assembly and the head assembly. The number of the machine body modules inside a hole is gradually increased and the number of the machine body modules outside the hole is gradually reduced along with the entry of the rear matched trailer into the hole, the machine tail assembly is connected with an installation window device used for installing the machine body modules, and the head assembly is connected with a tensioning device which is fixedly arranged. According to the deslagging system, the machine body module is disassembled and assembled inside and outside the hole to continuously support the conveying belt, and whole-course continuous deslagging in the starting working condition stage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a slag discharging system for a continuous belt conveyor used at the start of a tunneling machine. Background Technique

[0002] The continuous belt conveyor is a key slag discharging device in tunnel construction, which greatly improves the tunnel construction efficiency. For arranging the continuous belt conveyor in the tunnel, the tunneling machine needs to excavate the installation space required in the tunnel. Before the continuous belt conveyor is put into use, the tunneling machine can only dump the slag behind the trailer during the tunnel construction, and then transport it out of the tunnel by a forklift and a mine car. Limited by the space in the tunnel, the number of forklifts and mine cars for operation cannot be increased to improve the slag discharging efficiency, which seriously restricts the tunneling efficiency.

[0003] The Chinese utility model patent with the publication number of CN220909701U discloses a combined slag discharging system for small-section TBM construction, including a continuous belt slag discharging machine for long-distance slag discharging without turning inside and outside the tunnel, a shuttle car slag turning device for turning slag in a tunnel with a small turning radius, and a dump truck for turning slag outside the tunnel to a slag yard.

[0004] Before the slag discharging system of this scheme is used, the entire installation operation space in the tunnel also needs to be excavated in the tunnel before the installation can be completed. During the starting stage, there is no complete installation space in the tunnel, and the continuous slag discharging during the starting stage still cannot be satisfied. Conventional operation methods such as forklifts and mine cars are still needed for slag discharging. Therefore, there is an urgent need for a continuous belt conveyor slag discharging system specifically for the opening of the installation space in the tunnel before the starting stage to fill the blank period of continuous slag discharging during the starting stage. Content of the Utility Model

[0005] Aiming at the deficiencies in the above background technique, the utility model proposes a continuous belt conveyor slag discharging system for the start of a tunneling machine, which solves the problem that the installation of the continuous belt conveyor in the prior art must first open up the installation space in the tunnel, resulting in inapplicability during the starting stage.

[0006] The technical scheme of the utility model is realized as follows: A continuous belt conveyor slag discharging system for the start of a tunneling machine includes a tail assembly arranged on the rear support trailer in the tunnel. The tail assembly is connected to one end of a conveyor belt, and the other end of the conveyor belt is connected to a head assembly movably arranged outside the tunnel. A fuselage module for carrying the conveyor belt is detachably arranged between the tail assembly and the head assembly. As the rear support trailer enters the tunnel, the fuselage modules inside the tunnel are gradually increased and those outside the tunnel are gradually decreased. The tail assembly is connected to an installation window device for installing the fuselage module, and the head assembly is connected to a fixed tensioning device.

[0007] Preferably, the fuselage module includes a plurality of in-tunnel fuselage units detachably arranged on the side wall in sequence and out-of-tunnel fuselage units on the ground.

[0008] Preferably, the in-hole fuselage unit and the out-hole fuselage unit both include legs, which are detachably mounted on the ground or side walls through connectors, and are connected to a support platform, on which a roller for supporting a conveyor belt is rotatably mounted. Furthermore, adjacent support platforms are spliced ​​and socket-fitted. The legs are telescopic legs.

[0009] Preferably, the head assembly includes a mobile platform, on which a drive roller is rotatably provided, and on which a drive motor transmission-connected to the drive roller is fixedly provided. The mobile platform can be movably arranged on the track of the tunnel boring machine and is connected to the traction end of the tensioning device.

[0010] Preferably, the tensioning device includes a traction machine fixed on the ground outside the tunnel, and the traction end of the traction machine is connected to the mobile platform.

[0011] Preferably, the head assembly further comprises a movable support frame arranged between the movable platform and the fuselage module, and a roller shaft for supporting a conveyor belt is rotatably provided on the movable support frame.

[0012] Preferably, the tail assembly includes a support frame fixedly mounted on a rear supporting trailer, and a driven roller is rotatably mounted on the support frame.

[0013] Preferably, the window installation device includes a plurality of guide rollers rotatably arranged on a rear supporting trailer, and a separation roller is rotatably provided on the rear supporting trailer. The guide rollers and the separation roller cooperate with the upper belt body and the lower belt body of the conveyor belt respectively, and can expand the distance between the upper belt body and the lower belt body of the conveyor belt.

[0014] The beneficial effects of the utility model are as follows: the tail assembly can support one end of the conveyor belt, and the conveyor belt can receive the slag from the tunnel boring machine, and can then move into the tunnel with the supporting trailer; by setting a detachable fuselage module, the conveyor belt can be supported, and at the same time, the fuselage module part outside the tunnel can be dismantled as the conveyor belt enters the tunnel, and the fuselage module part inside the tunnel can be gradually installed from the installation window device, so as to continuously maintain the support for the conveyor belt, so as to continuously discharge materials as the excavation begins without opening up the installation space in the tunnel. By setting the head assembly, the conveyor belt can be driven and given a driving force, and by setting a tensioning device, the tensioning state of the conveyor belt can be maintained, and the conveyor belt can be extended and released as it moves into the tunnel, so as to maintain normal transportation.

[0015] This slag discharging system enables the tail assembly, conveyor belt, and head assembly of the slag discharging system to move into the tunnel following the trailing gantry during the starting operation, and always keeps the slag discharging point outside the tunnel. By continuously supporting the conveyor belt through the disassembly and assembly of the fuselage modules inside and outside the tunnel, continuous slag discharging throughout the starting operation stage is achieved. Without the need to transfer slag using mine cars in the case where there is a lack of installation space during the starting stage and a conventional continuous belt conveyor cannot be installed, the labor intensity is reduced, the safe, reliable, and efficient slag discharging under the starting condition of the roadheader is effectively ensured, the construction efficiency is improved, and the problem of low tunneling efficiency before the installation of the continuous belt conveyor is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic diagram of the comparison of the usage states of the present invention before entering the tunnel, when entering the tunnel, and after entering the tunnel;

[0018] Figure 2 Schematic diagram of the tail assembly, installation window device, and in-tunnel fuselage unit structure of the present invention;

[0019] Figure 3 Schematic diagram of the out-of-tunnel fuselage unit, head assembly, and tensioning device structure of the present invention;

[0020] In the figure: 1: trailing gantry, 2: tail assembly, 3: conveyor belt, 4: head assembly, 5: tail assembly, 6: installation window device, 20: tensioning device, 7: in-tunnel fuselage unit, 8: out-of-tunnel fuselage unit, 9: support leg, 10: support platform, 11: mobile platform, 12: driving roller shaft, 13: driving motor, 14: track, 15: mobile support frame, 16: support frame, 17: driven roller, 18: guide roller, 19: separating roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, rather than all, embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] As Figure 1As shown, in embodiment 1, a continuous belt conveyor slag discharging system for a tunnel boring machine starting out includes a tail assembly 2 arranged on a rear supporting trailer 1 in a tunnel, the tail assembly 2 is connected to one end of a conveyor belt 3, and the tail assembly 2 can support one end of the conveyor belt 3, and the slag material transmitted from the tunnel boring machine to the rear supporting trailer is received by the conveyor belt 3, and can be synchronously moved into the tunnel with the movement of the supporting trailer. The other end of the conveyor belt 3 is connected to a head assembly 4 movably arranged outside the tunnel, and the head assembly can drive the conveyor belt and provide driving force to the conveyor belt. A fuselage module 5 for carrying the conveyor belt 3 is detachably arranged between the tail assembly 2 and the head assembly 4. By setting a detachable fuselage module, the conveyor belt can be supported, and as the rear supporting trailer 1 enters the tunnel, the fuselage modules 5 inside the tunnel are gradually increased and those outside the tunnel are reduced. The tail assembly 2 is connected to the installation window device 6 for installing the fuselage module 5, and the head assembly 4 is connected to the fixed tensioning device 20, which can maintain the tension state of the conveyor belt, and extend and release as the conveyor belt moves into the hole to maintain normal conveying. In this embodiment, the fuselage module 5 includes a plurality of in-hole fuselage units 7 and out-hole fuselage units 8 on the ground that can be disassembled in sequence on the side wall. The in-hole fuselage units provide support for the conveyor belt in the hole to ensure that it runs in a groove, and the out-hole fuselage units provide support for the conveyor belt outside the hole to ensure that it runs in a groove. The overall length of the conveyor belt is constant. As the conveyor belt 3 enters the hole, the out-hole fuselage unit 8 located outside the hole is dismantled, and the in-hole fuselage unit 7 located inside the hole is installed from the installation window device 6, so as to continuously maintain the support for the conveyor belt 3.

[0023] When this embodiment is in use, firstly, the tail assembly 2 of the slag discharge system and the installation window device 6 are installed on the rear supporting trailer, and the outer fuselage unit 8 is installed in the open area outside the tunnel, and its installation length is not less than the total length required for the installation of a conventional continuous belt conveyor in the tunnel. Then, the head assembly 4, the conveyor belt 3, and the tensioning device 20 are installed in sequence. The tensioning device 20 is fixed on the ground outside the tunnel and is traction-connected to the head assembly 4.

[0024] During the operation, the tail assembly 2 receives the slag from the conveyor belt of the tunnel boring machine, and as the tunnel boring machine moves forward, the head assembly 4 moves forward under the action of the belt tension, and the tensioning device 20 releases the traction rope to ensure that the conveying belt extends and moves into the tunnel. After each one or two cycles of tunneling, the in-tunnel fuselage unit 7 is installed at the tail installation window, and the corresponding length of the out-tunnel fuselage unit 8 is removed outside the tunnel. After the out-tunnel fuselage unit 8 is removed, the position of the head assembly 4 is adjusted to ensure that the distance between the out-tunnel fuselage unit 8 and the head assembly 4 is within a reasonable design range. In this process, the head drop point is always kept outside the tunnel, which can realize the uninterrupted and continuous transportation of the slag in the tunnel and improve the tunneling efficiency.

[0025] In summary, as the roadheader advances forward, the head assembly 4 gradually moves towards the tunnel entrance direction until all the in-tunnel body units 8 are gradually removed, and the installation space required for the conventional continuous belt conveyor inside the tunnel is also excavated. At this point, the task of the continuous belt conveyor slag discharging system for starting is completely completed.

[0026] Embodiment 2. A continuous belt conveyor slag discharging system for the starting of a roadheader. On the basis of Embodiment 1, as Figure 2 、 3 shown, both the in-tunnel body unit 7 and the out-of-tunnel body unit 8 include legs 9. The legs 9 are detachably arranged on the ground or the side wall through connecting pieces. The legs 9 are connected to the support table 10, and a roller shaft for supporting the conveying belt 3 is rotatably arranged on the support table 10. In this embodiment, the legs of the in-tunnel body unit 7 are detachably arranged on the inner side wall of the tunnel, using the inner side wall of the tunnel for support, reducing the space occupation of the opposite part. The legs of the out-of-tunnel body unit are detachably arranged on the ground, forming a more stable support. As a further optional solution, a foot plate is arranged at the lower end of the leg, through holes are arranged on the foot plate, and the foot plate is connected to the ground or the side wall through expansion bolts, so as to meet both the fixing requirements and the quick disassembly requirements.

[0027] As a further implementation manner, the adjacent support tables 10 are in socket joint, that is, one end of the support table is provided with a groove, the other end is provided with a protrusion, corresponding pin holes are arranged on the protrusion and the groove, and the adjacent support tables are connected together through the protrusion inserted into the groove and locked by a pin shaft or a bolt inserted into the pin hole, so as to realize the socket connection and fixation between the adjacent support tables, so that the out-of-tunnel body units 8 are connected together, and the in-tunnel body units 7 are connected together, forming a more stable support. As an optional solution, the in-tunnel body unit and the out-of-tunnel body unit at the junction are also connected by socket joint to improve the structural stability.

[0028] As a further optional implementation manner, the leg 9 in this embodiment is a telescopic leg. Being set as a telescopic leg can adjust the height according to the actual use scenario, so that the height of the support table and the roller shaft on the support table can adapt to the support of the conveying belt, making the conveying smoother. Specifically, the telescopic leg in this embodiment includes two pipe sections, and the two pipe sections are in plug-in sliding fit. The lower pipe section is fixed to the foot plate, and the upper pipe section is fixedly connected to the support table. A set screw is threadedly connected to the side wall of one of the pipe sections. After adjusting the length of the telescopic leg, by rotating the set screw, it can be made to press against the side wall of the other pipe section, thereby realizing height locking.

[0029] Embodiment 3. A continuous belt conveyor slag discharging system for the starting of a roadheader. On the basis of Embodiment 2, as Figure 3As shown, the head assembly 4 includes a mobile platform 11, on which a driving roller 12 is rotatably provided, and a driving motor 13 connected to the driving roller 12 is fixedly provided on the mobile platform 11. The mobile platform 11 can be movably provided on the track 14 of the tunnel boring machine and is connected to the traction end of the tensioning device 20. The track provides a guide for the movement of the head assembly. In addition, the head assembly 4 also includes a mobile support frame 15 provided between the mobile platform 11 and the fuselage module 5, on which a roller for supporting the conveyor belt 3 is rotatably provided. In conventional construction, as the tunnel boring machine advances, a track is formed on the ground to meet the use of the tunnel boring machine and the subsequent matching. The lower ends of the mobile platform and the mobile support frame in this embodiment are both provided with moving wheels, which cooperate with the track to meet the movement on the track. As the tunnel boring machine advances, the mobile support frame and the mobile platform both move forward along the track synchronously. The provision of the mobile support frame can ensure that the distance between the fuselage unit 8 outside the tunnel and the driving roller 12 is within a reasonable range, ensuring that the conveyor belt runs in a groove.

[0030] The tensioning device 20 includes a traction machine fixed on the ground outside the tunnel, and the traction end of the traction machine is connected to the mobile platform. As a further specific implementation, a steel wire rope for traction is provided on the drum on the middle traction machine, and the drum is driven by a variable frequency motor. The end of the steel wire rope is connected to the mobile platform, so that the mobile platform can be tractioned, and the conveyor belt is automatically tensioned to maintain transmission. After the tension of the conveyor belt exceeds the set threshold, the steel wire rope is released to ensure the extension of the belt conveyor. As a further optional solution, a certain tension value is set during use. As the tunnel boring machine advances, the pulling force on the head assembly gradually increases. After it exceeds the threshold set by the variable frequency tensioning, the drum releases the steel wire rope, and the head assembly moves forward under the traction of the tunnel boring machine.

[0031] Embodiment 4, a continuous belt conveyor slag discharging system for a tunnel boring machine, based on embodiment 3, as Figure 2 As shown, the tail assembly 2 includes a support frame 16 fixedly mounted on the rear supporting trailer 1, and a driven roller 17 is rotatably mounted on the support frame 16. In this embodiment, the driven roller 17 and the driving roller shaft 12 on the mobile platform support the conveying belt from both ends respectively, and the driven roller can drive the conveying belt to move with the movement of the supporting trailer, and at the same time drive the driving roller at the other end and the mobile platform to move synchronously along the track under the length limit of the conveying belt.

[0032] In addition, the installation window device 6 includes a number of guide rollers 18 rotatably arranged on the trailing trailer 1. A separating roller 19 is rotatably arranged on the trailing trailer 1. The guide rollers 18 and the separating roller 19 are respectively engaged with the upper belt body and the lower belt body of the conveyor belt 3, and can widen the distance between the upper belt body and the lower belt body of the conveyor belt 3. In this embodiment, a pair of separating rollers are provided, respectively located on both sides of the lower belt body of the conveyor belt, to limit the position of the lower belt body. Under the action of the guide rollers and the separating rollers, the distance between the corresponding upper belt body and the lower belt body of the guide rollers and the separating rollers is greater than the distance between the upper belt body and the lower belt body at the driven roller and at the in-tunnel fuselage unit 7, thereby forming an installation window. When installing the in-tunnel fuselage unit 7, by using the larger distance at this installation window, the roller shaft of the in-tunnel fuselage unit is arranged between the upper belt body and the lower belt body, and moved to the designated position, and is inserted and mated with the table of the already fixed in-tunnel fuselage unit or the out-of-tunnel fuselage unit, and fixed to the inner side wall of the tunnel, forming a conveying support for the conveyor belt. During this process, the corresponding length of the out-of-tunnel fuselage unit is synchronously removed. The setting of the installation window device realizes the extension of the fuselage section, i.e., the in-tunnel fuselage unit, of the mucking system of the continuous belt conveyor without stopping the tunneling machine. During the entire tunneling operation process, the head feeding point of the conveyor belt always remains outside the tunnel, realizing continuous operation of the entire mucking process, and greatly improving the tunneling efficiency.

[0033] As a further optional implementation manner, the roller shaft of the in-tunnel fuselage unit 7 is rotatably arranged on the shaft seat, and the shaft seat is detachably arranged on the table 10 through bolts. When installing the in-tunnel fuselage unit, first fix the table and the leg on the side wall, and then connect and fix the shaft seat to the table at the window.

[0034] As an alternative implementation manner, the traction machine in the above embodiment can be replaced by a chain block, and the chain block is used to provide tension for the conveyor belt.

[0035] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous belt conveyor slag discharging system for a tunnel boring machine, characterized in that: The invention comprises a tail assembly (2) arranged on a rear supporting trailer (1) in a hole, the tail assembly (2) being connected to one end of a conveyor belt (3), the other end of the conveyor belt (3) being connected to a head assembly (4) movably arranged outside the hole, a fuselage module (5) for carrying the conveyor belt (3) being detachably arranged between the tail assembly (2) and the head assembly (4), and the fuselage modules (5) in the hole are gradually increased and decreased as the rear supporting trailer (1) enters the hole; the tail assembly (2) is connected to an installation window device (6) for installing the fuselage modules (5), and the head assembly (4) is connected to a fixedly arranged tensioning device (20).

2. The continuous belt conveyor slag discharging system for the starting of the tunnel boring machine according to claim 1, characterized in that: The fuselage module (5) comprises a plurality of in-hole fuselage units (7) which are sequentially detachable on the side walls and an out-hole fuselage unit (8) on the ground.

3. The continuous belt conveyor slag discharging system for the starting of the tunnel boring machine according to claim 2, characterized in that: The in-hole fuselage unit (7) and the out-hole fuselage unit (8) both include a support leg (9), which is detachably mounted on the ground or the side wall via a connecting piece, and is connected to a support platform (10), on which a roller shaft for supporting the conveyor belt (3) is rotatably provided.

4. The continuous belt conveyor slag discharging system for the starting of the tunnel boring machine according to claim 3, characterized in that: Adjacent support platforms (10) are socket-fitted.

5. The continuous belt conveyor slag discharging system for the starting of the tunnel boring machine according to claim 4, characterized in that: The supporting legs (9) are telescopic supporting legs.

6. The continuous belt conveyor slag discharging system for starting a tunnel boring machine according to any one of claims 1 to 5, characterized in that: The head assembly (4) comprises a mobile platform (11), a driving roller shaft (12) is rotatably provided on the mobile platform (11), and a driving motor (13) is fixedly provided on the mobile platform (11) and is transmission-connected to the driving roller shaft (12). The mobile platform (11) is movably arranged on a track (14) of a roadheader and is connected to a traction end of a tensioning device (20).

7. The continuous belt conveyor slag discharging system for the starting of a roadheader according to claim 6, characterized in that: The tensioning device (20) comprises a traction machine fixed on the ground outside the tunnel, and a traction end of the traction machine is connected to the mobile platform (11).

8. The continuous belt conveyor slag discharging system for starting a roadheader according to claim 7, characterized in that: The head assembly (4) further comprises a movable support frame (15) arranged between the movable platform (11) and the fuselage module (5), and a roller shaft for supporting the conveyor belt (3) is rotatably provided on the movable support frame (15).

9. The continuous belt conveyor slag discharging system for starting a roadheader according to claim 1 or 8, characterized in that: The tail assembly (2) comprises a support frame (16) fixedly mounted on the rear supporting trailer (1), and a driven roller (17) is rotatably mounted on the support frame (16).

10. The continuous belt conveyor slag discharging system for starting a roadheader according to claim 9, characterized in that: The window installation device (6) comprises a plurality of guide rollers (18) rotatably arranged on the rear supporting trailer (1), and a separation roller (19) rotatably arranged on the rear supporting trailer (1). The guide rollers (18) and the separation roller (19) respectively cooperate with the upper belt body and the lower belt body of the conveyor belt (3), and can expand the distance between the upper belt body and the lower belt body of the conveyor belt (3).

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