Shield launching belt conveying system

Abstract

The invention provides a shield launching belt conveying system which comprises a rack, the rack comprises a trolley section, a transition section and an extension section, the trolley section and the transition section are sequentially arranged at the tail of shield equipment, the extension section is arranged in a launching well and a tunnel and located at the tail of the transition section, and the extension section is used for extending in the tunneling direction; the multiple carrier roller sets are sequentially arranged on the trolley section, the transition section and the extension section, and the carrier roller sets are used for winding a belt; wherein the transition section is provided with a dip angle adjusting mechanism, and the dip angle adjusting mechanism is used for reducing the dip angle of the belt on the transition section when the distance between the trolley section and the extension section is increased. According to the shield launching belt conveying system, the dip angle of the belt on the transition section is reduced through the dip angle adjusting mechanism, so that slag is smoothly transited to the extension section from the trolley section, the phenomena of deviation and slag leakage in belt conveying are reduced, and the construction efficiency and the slag transportation stability are effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of belt conveying, and in particular to a shield starting belt conveying system. Background Art

[0002] During the initial construction of shield tunnels, the design and implementation of the slag discharge system has always been an important part of improving construction efficiency and ensuring safety. The traditional horizontal + vertical transportation method is too inefficient, difficult to dispatch, and has potential safety hazards. Conventional belt conveyor systems often face many technical challenges in the application of narrow construction sites and tunnels with complex geology. For example, in complex tunnel excavation environments, traditional belt conveyor systems have poor flexibility, especially in the transition section in the middle, which cannot effectively adapt to position changes during construction, and are prone to deviation and slag leakage, which seriously affects construction efficiency and the stability of slag transportation. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an object of the present disclosure is to provide a shield starting belt conveyor system.

[0005] To achieve the above-mentioned purpose, the present disclosure provides a shield starting belt conveyor system, comprising: a frame, the frame comprising: a trolley section, a transition section and an extension section, the trolley section and the transition section are arranged in sequence at the tail of the shield equipment, and the extension section is arranged in the starting shaft and the tunnel and is located at the tail of the transition section, and the extension section is used to extend along the excavation direction; a plurality of roller groups, the plurality of roller groups are arranged in sequence on the trolley section, the transition section and the extension section, and the roller groups are used to wind the belt; wherein the transition section is provided with an inclination adjustment mechanism, and the inclination adjustment mechanism is used to reduce the inclination of the belt on the transition section when the distance between the trolley section and the extension section increases.

[0006] Optionally, the inclination adjustment mechanism includes: a support frame, which is movably arranged on the transition section, and the head of the support frame is close to the tail of the trolley section, and the tail of the support frame is close to the head of the extension section, and a plurality of roller groups are sequentially arranged on the trolley section, the support frame and the extension section, wherein the height of the tail of the trolley section is less than the height of the head of the extension section; a first drive assembly, which is transmission-connected to the head of the support frame, and the first drive assembly is used to drive the head of the support frame to rise and fall; a second drive assembly, which is transmission-connected to the tail of the support frame, and the second drive assembly is used to drive the tail of the support frame to rise and fall; wherein, the first drive assembly and the second drive assembly are used to reduce the inclination angle of the belt on the transition section when the distance between the trolley section and the extension section increases.

[0007] Optionally, the first drive assembly and the second drive assembly are also used to reduce the inclination angle of the belt on the transition section when the excavation direction of the shield equipment is inclined downward.

[0008] Optionally, the system also includes: a material receiving device, which includes: a sealed material receiving hopper, a buffer roller and a plurality of anti-overflow skirts; wherein, the sealed material receiving hopper, the buffer roller and the anti-overflow skirts are respectively arranged at the head of the trolley section, and the feed end of the sealed material receiving hopper is connected to the discharge end of the shield equipment, the buffer roller is located below the discharge end of the sealed material receiving hopper, the buffer roller is used for winding the belt, and the anti-overflow skirts are located on both sides of the discharge end of the sealed material receiving hopper and are arranged close to the belt.

[0009] Optionally, the material receiving device further includes: an overflow sensor, wherein a detection end of the overflow sensor is arranged on the inner side of the top of the anti-overflow skirt plate, and the overflow sensor is used to detect whether the slag material on the inner side of the anti-overflow skirt plate overflows.

[0010] Optionally, the system also includes: a unloading device, which includes: a sealed unloading hopper and a plurality of scrapers; wherein the sealed unloading hopper is arranged at the tail of the extension section, and the discharge end of the belt is located in the sealed unloading hopper; the scraper is arranged in the sealed unloading hopper, and the scraping end of the scraper is close to the belt, and the plurality of scrapers are spaced apart along the running direction of the belt.

[0011] Optionally, a spray device is provided between adjacent scrapers, and a spray end of the spray device faces the belt.

[0012] Optionally, the system also includes: a belt storage device, which includes: a fixed frame, a movable frame, a plurality of first turning rollers and a plurality of second turning rollers; wherein the fixed frame is arranged at the tail of the extension section, and the movable frame is slidably arranged relative to the fixed frame along the excavation direction; a plurality of the first turning rollers are arranged on the fixed frame at intervals, and a plurality of the second turning rollers are arranged on the movable frame at intervals, and the return portion of the belt alternately bypasses the plurality of the first turning rollers and the plurality of the second turning rollers.

[0013] Optionally, the system also includes: a variable frequency tensioning device, which is arranged on a side of the movable frame away from the fixed frame, and the tensioning end of the variable frequency tensioning device is connected to the movable frame, and the variable frequency tensioning device is used to apply a constant force on the movable frame in a direction away from the fixed frame.

[0014] Optionally, the roller group includes: a grooved roller, the grooved roller is used to wind the belt, and the groove angle range of the grooved roller is 45°-60°.

[0015] The technical solution provided by the present disclosure may have the following beneficial effects:

[0016] Since the trolley section and transition section are sequentially arranged at the tail of the shield equipment, and the extension section is arranged in the tunnel and located at the tail of the transition section, multiple roller groups are sequentially arranged on the trolley section, transition section and extension section, so that the trolley section, transition section and extension section of the frame can effectively support multiple roller groups, so that the support and guidance of the belt can be realized by using multiple roller groups, and then the slag can be transported by using the belt. In addition, since the trolley section and transition section move with the shield equipment, and the extension section is extended along the excavation direction, the trolley section, transition section and extension section of the frame can adapt to the continuous excavation of the shield equipment and ensure the continuous operation of the belt. Among them, as the shield equipment advances, when the distance between the trolley section and the extension section increases and the extension of the extension section has not yet been completed, the inclination adjustment mechanism reduces the inclination of the belt on the transition section, so that the slag is smoothly transferred from the trolley section to the extension section, thereby reducing the deviation and slag leakage in the belt conveyor, and effectively improving the construction efficiency and the stability of slag transportation.

[0017] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of a shield starting belt conveyor system proposed in an embodiment of the present disclosure;

[0020] Figure 2 It is a structural schematic diagram of the inclination adjustment mechanism in the shield starting belt conveyor system proposed in one embodiment of the present disclosure;

[0021] Figure 3 It is a structural schematic diagram of a material receiving device in a shield starting belt conveyor system proposed in an embodiment of the present disclosure;

[0022] Figure 4 It is a structural schematic diagram of a discharge device in a shield starting belt conveyor system proposed in an embodiment of the present disclosure;

[0023] Figure 5 It is a structural schematic diagram of a belt storage device in a shield starting belt conveyor system proposed in an embodiment of the present disclosure;

[0024] As shown in the figure: 1. Trolley section, 2. Transition section, 3. Extension section, 4. Roller group;

[0025] 5. Inclination adjustment mechanism, 51. Support frame, 52. First drive assembly, 53. Second drive assembly;

[0026] 6. Material receiving device, 61. Sealed material receiving hopper, 62. Buffer roller, 63. Anti-overflow skirt, 64. Overflow sensor;

[0027] 7. Discharging device, 71. Sealed discharging hopper, 72. Scraper, 73. Spraying device;

[0028] 8. belt storage device, 81. fixed frame, 82. movable frame, 83. first turning roller, 84. second turning roller;

[0029] 9. Frequency conversion tensioning device, 10. Vulcanizing device, 11. Driving device, 12. Belt;

[0030] 100. Shield equipment. DETAILED DESCRIPTION

[0031] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0032] like Figure 1 and Figure 2As shown, the embodiment of the present disclosure proposes a shield starting belt conveying system, including: a frame and a plurality of roller groups 4, the frame includes: a trolley section 1, a transition section 2 and an extension section 3, the trolley section 1 and the transition section 2 are sequentially arranged at the tail of the shield equipment 100, and the extension section 3 is arranged in the starting shaft and the tunnel and is located at the tail of the transition section 2, the extension section 3 is used to extend along the excavation direction, and a plurality of roller groups 4 are sequentially arranged on the trolley section 1, the transition section 2 and the extension section 3, and the roller group 4 is used to wind the belt 12. Among them, the transition section 2 is provided with an inclination adjustment mechanism 5, and the inclination adjustment mechanism 5 is used to reduce the inclination of the belt 12 on the transition section 2 when the distance between the trolley section 1 and the extension section 3 increases.

[0033] It can be understood that since the trolley section 1 and the transition section 2 are sequentially arranged at the tail of the shield equipment 100, and the extension section 3 is arranged in the starting shaft and the tunnel and is located at the tail of the transition section 2, multiple roller groups 4 are sequentially arranged on the trolley section 1, the transition section 2 and the extension section 3, so that the trolley section 1, the transition section 2 and the extension section 3 of the frame can effectively support the multiple roller groups 4, thereby utilizing the multiple roller groups 4 to support and guide the belt 12, and then utilizing the belt 12 to transport the slag, and since the trolley section 1 and the transition section 2 move with the shield equipment 100, and the extension section 3 is extended along the excavation direction, the trolley section 1, the transition section 2 and the extension section 3 of the frame can adapt to the continuous excavation of the shield equipment 100 and ensure the continuous operation of the belt 12.

[0034] Among them, as the shield equipment 100 advances, when the distance between the trolley section 1 and the extension section 3 increases and the extension of the extension section 3 has not yet been completed, the inclination adjustment mechanism 5 reduces the inclination of the belt 12 on the transition section 2, thereby smoothly transitioning the slag from the trolley section 1 to the extension section 3, thereby reducing the deviation and slag leakage during the conveying of the belt 12, and effectively improving the construction efficiency and the stability of slag transportation.

[0035] It should be noted that the belt conveyor system based on the inclination adjustment mechanism 5 has a more compact structure as a whole, so that it can adapt to the narrow construction space site and complex geological tunnels in the start-up of the shield machine. Its flexible operation overcomes the space limitation problem of traditional belt conveyors and effectively improves the slag discharge efficiency.

[0036] Specifically, the use of the inclination adjustment mechanism 5 effectively reduces system failures and downtime, improves the stability and reliability of the system, and not only extends the service life of the system, but also in the initial stage, the continuous working time of the system can reach more than 90%, which is much higher than the traditional horizontal grouping + vertical slag discharge method.

[0037] The frame is used to arrange the roller group 4 along the length direction of the tunnel, so as to use the roller group 4 to support and guide the belt 12, thereby assisting the shield equipment 100 to realize the excavation construction of the starting section. In the frame, the trolley section 1 is the part located at the tail of the shield equipment 100 and directly follows the shield equipment 100, the transition section 2 is the part located at the tail of the trolley section 1 and indirectly follows the shield equipment 100, and the extension section 3 is the part located at the tail of the transition section 2 and arranged in the tunnel, which does not follow the shield equipment 100. In order to adapt to the continuously advancing shield equipment 100 and the advancing trolley section 1 and transition section 2, the extension section 3 needs to be extended along the excavation direction as the shield equipment 100 advances. Among them, the specific types of the trolley section 1, the transition section 2 and the extension section 3 can be set according to actual needs, and there is no restriction on this. For example, the trolley section 1, the transition section 2 and the extension section 3 are all composed of multiple longitudinal beams, multiple transverse beams and other beams. For the trolley section 1 and the transition section 2, the bottom is provided with walking wheels to cooperate with the guide rails at the bottom of the tunnel to achieve follow-up walking. For the extension section 3, its bottom is directly arranged in the tunnel, and as the shield equipment 100 advances, the extension section 3 continuously adds supporting beams such as longitudinal beams and transverse beams to achieve effective support and guidance of the belt 12.

[0038] The roller group 4 is used to support and guide the belt 12. The roller group 4 includes: an upper roller group 4 and a lower roller group 4. The upper roller group 4 is used to support and guide the feeding part (upper part) of the belt 12, and the lower roller group 4 is used to support and guide the return part (lower part) of the belt 12. The specific type of the roller group 4 can be set according to actual needs and is not limited to this. Among them, the roller group 4 also includes: longitudinal beams, cross beams and other supporting members for arranging the upper roller group 4 and the lower roller group 4.

[0039] The inclination adjustment mechanism 5 is used to adjust the inclination of the belt 12 on the transition section 2 according to the distance between the trolley section 1 and the extension section 3, so as to make the slag material smoothly transition from the trolley section 1 to the extension section 3. Specifically, when the distance between the trolley section 1 and the extension section 3 increases, the inclination of the belt 12 on the transition section 2 is reduced; when the distance between the trolley section 1 and the extension section 3 increases, the inclination of the belt 12 on the transition section 2 is reduced. The specific type of the inclination adjustment mechanism 5 can be set according to actual needs and is not limited thereto.

[0040] like Figure 2As shown, in some embodiments, the inclination adjustment mechanism 5 includes: a support frame 51, a first drive assembly 52 and a second drive assembly 53, the support frame 51 is movably arranged on the transition section 2, and the head of the support frame 51 is close to the tail of the trolley section 1, and the tail of the support frame 51 is close to the head of the extension section 3, and a plurality of roller groups 4 are sequentially arranged on the trolley section 1, the support frame 51 and the extension section 3, wherein the height of the tail of the trolley section 1 is less than the height of the head of the extension section 3, the first drive assembly 52 is connected to the head of the support frame 51 by transmission, and the first drive assembly 52 is used to drive the head of the support frame 51 to rise and fall, the second drive assembly 53 is connected to the tail of the support frame 51 by transmission, and the second drive assembly 53 is used to drive the tail of the support frame 51 to rise and fall. The first drive assembly 52 and the second drive assembly 53 are used to reduce the inclination of the belt 12 on the transition section 2 when the distance between the trolley section 1 and the extension section 3 increases.

[0041] It can be understood that since the support frame 51 is movably arranged on the transition section 2, and the first drive component 52 is connected to the head of the support frame 51 by transmission, and the second drive component 53 is connected to the tail of the support frame 51 by transmission, the support frame 51 can utilize the lifting drive of the first drive component 52 and the lifting drive of the second drive component 53 to adjust the inclination angle. Therefore, when the distance between the trolley section 1 and the extension section 3 increases, the first drive component 52 and the second drive component 53 cooperate to reduce the inclination angle of the belt 12 on the transition section 2, thereby smoothly transitioning the slag from the trolley section 1 to the extension section 3, thereby reducing the deviation and slag leakage of the belt 12 during transportation, and effectively improving the construction efficiency and the stability of slag transportation.

[0042] It should be noted that the first drive assembly 52 is used to drive the head of the support frame 51 to rise and fall. The specific type of the first drive assembly 52 can be set according to actual needs and is not limited thereto. For example, the first drive assembly 52 can be a servo electric cylinder, which is arranged at the head of the support frame 51 and whose telescopic action realizes the rise and fall of the head of the support frame 51. The servo electric cylinder can also feedback the telescopic length, and then use the telescopic length of the first drive assembly 52 to calculate the inclination angle of the support frame 51.

[0043] The second driving assembly 53 is used to drive the tail of the support frame 51 to rise and fall. The specific type of the second driving assembly 53 can be set according to actual needs, and there is no limitation on this. For example, the second driving assembly 53 can be a servo electric cylinder, which is arranged at the tail of the support frame 51, and its telescopic action realizes the rise and fall of the tail of the support frame 51. The servo electric cylinder can also feedback the telescopic length, and then use the telescopic length of the second driving assembly 53 to calculate the inclination angle of the support frame 51.

[0044] Among them, the movable arrangement of the support frame 51 can be realized by using the first drive component 52 and the second drive component 53. For example, one end of the first drive component 52 is fixed on the transition section 2, and the other end is hinged to the head of the support frame 51, while one end of the second drive component 53 is hinged to the transition section 2, and the other end is hinged to the head of the support frame 51.

[0045] The coordination mode of the first drive component 52 and the second drive component 53 can be set according to actual needs without limitation. For example, the first drive component 52 does not move, while the second drive component 53 performs telescopic movement; the first drive component 52 performs telescopic movement, while the second drive component 53 does not move; the first drive component 52 and the second drive component 53 perform telescopic movement at the same time, and in opposite directions; the first drive component 52 and the second drive component 53 perform telescopic movement at the same time, and in the same direction but with different telescopic amplitudes.

[0046] In some embodiments, the first drive assembly 52 and the second drive assembly 53 are also used to reduce the inclination angle of the belt 12 on the transition section 2 when the excavation direction of the shield equipment 100 is inclined downward.

[0047] It can be understood that when the excavation direction of the shield equipment 100 is tilted downward, the first drive assembly 52 and the second drive assembly 53 cooperate to reduce the inclination angle of the belt 12 on the transition section 2, so that the belt 12 can smoothly transition the slag from the trolley section 1 to the extension section 3, thereby reducing the deviation and slag leakage during the conveying of the belt 12, and effectively improving the construction efficiency and the stability of slag transportation.

[0048] It should be noted that when the excavation direction of the shield equipment 100 is tilted downward, the inclination angle of the belt 12 on the transition section 2 in the horizontal plane is large and the slope is too steep, which makes it very easy for the belt 12 to deviate or leak slag. Therefore, the first drive assembly 52 and the second drive assembly 53 cooperate with the drive support frame 51 to reduce the inclination angle of the belt 12 on the transition section 2, thereby reducing the deviation and leakage of the belt 12 during transportation.

[0049] like Figure 3 As shown, in some embodiments, the system further includes: a material receiving device 6, which includes: a sealed material receiving hopper 61, a buffer roller 62 and a plurality of anti-overflow skirts 63. The sealed material receiving hopper 61, the buffer roller 62 and the anti-overflow skirt 63 are respectively arranged at the head of the trolley section 1, and the feed end of the sealed material receiving hopper 61 is connected to the discharge end of the shield equipment 100, the buffer roller 62 is located below the discharge end of the sealed material receiving hopper 61, the buffer roller 62 is used to wind the belt 12, and the anti-overflow skirt 63 is located on both sides of the discharge end of the sealed material receiving hopper 61 and is arranged close to the belt 12.

[0050] It can be understood that since the feed end of the sealed material receiving hopper 61 is connected to the discharge end of the shield equipment 100, and the buffer roller 62 is located below the discharge end of the sealed material receiving hopper 61, the belt 12 is wound around the buffer roller 62, so that the slag transported by the shield equipment 100 can use the sealed material receiving hopper 61 to enter the belt 12 supported and guided by the buffer roller 62, and then the operation of the belt 12 is used to realize the transportation of the slag.

[0051] Among them, the sealing structure of the sealed material receiving hopper 61 can reduce the leakage of slag in the process of the shield equipment 100 transferring the slag to the belt 12; the buffering structure of the buffer roller 62 can buffer the impact of large-size slag in the process of the shield equipment 100 transferring the slag to the belt 12, thereby reducing the impact and wear of the belt 12; the arrangement of the anti-overflow skirt 63 can form limit positions on both sides of the belt 12 in the process of the shield equipment 100 transferring the slag to the belt 12, thereby reducing the overflow of slag.

[0052] It should be noted that the sealed receiving hopper 61 is used to form a relatively closed receiving space at the discharge end of the shield equipment 100. The specific type of the sealed receiving hopper 61 can be set according to actual needs and is not limited to this. For example, the sealed receiving hopper 61 can be a closed bucket-shaped structure, and the top or side of the bucket-shaped structure is provided with a feed port for accommodating the discharge end (wear-resistant chute) of the shield equipment 100, and flexible sealing members are provided around the feed port. A discharge port for discharging is provided at the bottom of the bucket-shaped structure, and the discharge port is provided close to the belt 12.

[0053] The buffer roller 62 is used to support and guide the belt 12 and to buffer the impact of large-size slag. The feed end of the belt 12 is located at the buffer roller 62. The specific type of the buffer roller 62 can be set according to actual needs and is not limited to this.

[0054] The anti-overflow skirt 63 is used to form a limit on both sides of the belt 12 to reduce the overflow of slag. The specific type of the anti-overflow skirt 63 can be set according to actual needs and is not limited to this. For example, the anti-overflow skirt 63 is an inclined plate structure, and the anti-overflow skirt 63 is set close to the belt 12 and does not affect the operation of the belt 12.

[0055] like Figure 3 As shown, in some embodiments, the material receiving device 6 also includes: an overflow sensor 64, the detection end of the overflow sensor 64 is arranged on the top inner side of the anti-overflow skirt plate 63, and the overflow sensor 64 is used to detect whether the slag material inside the anti-overflow skirt plate 63 overflows.

[0056] It can be understood that since the detection end of the overflow sensor 64 is arranged on the inner side of the top of the anti-overflow skirt plate 63, the overflow sensor 64 can detect whether the slag inside the anti-overflow skirt plate 63 overflows, so that the overflow sensor 64 can be used to obtain the slag filling status on the belt 12 in real time, and then adjust the system operation parameters in time according to the slag filling status to ensure stable and efficient transportation of the slag.

[0057] It should be noted that the overflow sensor 64 is used to detect whether the slag inside the overflow prevention skirt 63 overflows. The specific type of the overflow sensor 64 can be set according to actual needs and is not limited to this. For example, the overflow sensor 64 can be a photoelectric switch, etc.

[0058] like Figure 4 As shown, in some embodiments, the system further includes: a discharge device 7, which includes: a sealed discharge hopper 71 and a plurality of scrapers 72. The sealed discharge hopper 71 is arranged at the tail of the extension section 3, and the discharge end of the belt 12 is located in the sealed discharge hopper 71, and the scraper 72 is arranged in the sealed discharge hopper 71, and the scraping end of the scraper 72 is close to the belt 12, and the plurality of scrapers 72 are distributed at intervals along the running direction of the belt 12.

[0059] It can be understood that since the sealed discharge hopper 71 is arranged at the tail of the extension section 3 and the discharge end of the belt 12 is located in the sealed discharge hopper 71, the slag transported by the belt 12 from the shield equipment 100 can be discharged using the sealed discharge hopper 71. At the same time, the sealing structure of the sealed discharge hopper 71 can reduce the leakage of slag during the process of the belt 12 discharging slag.

[0060] Since the scraper 72 is arranged in the sealed discharge hopper 71, and the scraping end of the scraper 72 is close to the belt 12, multiple scrapers 72 are distributed at intervals along the running direction of the belt 12, so that while the belt 12 is running, multiple scrapers 72 can be used to effectively remove slag, debris, etc. attached to the belt 12, thereby ensuring the efficient operation of the system.

[0061] It should be noted that the sealed discharge hopper 71 is used to form a relatively closed discharge space at the discharge end of the belt 12. The specific type of the sealed discharge hopper 71 can be set according to actual needs and is not limited to this. For example, the sealed discharge hopper 71 can be a closed bucket-shaped structure, and the top or side of the bucket-shaped structure is provided with a feed port for accommodating the discharge end of the belt 12, and flexible sealing members are provided around the feed port, and a discharge port for discharging is provided at the bottom of the bucket-shaped structure.

[0062] The scraper 72 is used to scrape off slag, debris, etc. on the belt 12. The specific type of the scraper 72 can be set according to actual needs and is not limited to this. For example, the scraper 72 can be an alloy scraper 72.

[0063] like Figure 4 As shown, in some embodiments, a spray device 73 is provided between adjacent scrapers 72 , and a spray end of the spray device 73 faces the belt 12 .

[0064] It can be understood that since a spray device 73 is provided between adjacent scrapers 72 and the spray end of the spray device 73 is facing the belt 12, the belt 12 can utilize the spraying of multiple spray devices 73 to effectively remove slag, debris, etc. attached to the belt 12 while it is running, thereby ensuring the efficient operation of the system.

[0065] It should be noted that the spray device 73 cooperates with the scraper 72 to remove slag, debris, etc. attached to the belt 12. The specific type of the spray device 73 can be set according to actual needs and is not limited to this. For example, the spray device 73 uses the cooperation of a pump body and a nozzle to pressurize the clean water source in the field and spray it onto the belt 12. At the same time, the opening and closing of a valve body is used to realize the automatic operation of the spray.

[0066] like Figure 5 As shown, in some embodiments, the system further includes: a belt storage device 8, which includes: a fixed frame 81, a movable frame 82, a plurality of first turning rollers 83 and a plurality of second turning rollers 84. The fixed frame 81 is arranged at the tail of the extension section 3, and the movable frame 82 is arranged to slide relative to the fixed frame 81 along the excavation direction, a plurality of first turning rollers 83 are arranged on the fixed frame 81 at intervals, and a plurality of second turning rollers 84 are arranged on the movable frame 82 at intervals, and the return portion of the belt 12 alternately bypasses the plurality of first turning rollers 83 and the plurality of second turning rollers 84.

[0067] It can be understood that since the movable frame 82 is slidably arranged relative to the fixed frame 81 along the excavation direction, and the return part of the belt 12 alternately bypasses the multiple first turning rollers 83 on the fixed frame 81 and the multiple second turning rollers 84 on the movable frame 82, a larger portion of the belt 12 can be stored between the fixed frame 81 and the movable frame 82. At the same time, by utilizing the movement of the movable frame 82, the belt 12 can be extended during the excavation process of the shield equipment 100, thereby ensuring the stable transportation of the slag by the belt 12.

[0068] It should be noted that the fixed frame 81 is used to carry the multiple first turning rollers 83 and cooperate with the movable frame 82 to realize the storage and release of the belt 12. The specific type of the fixed frame 81 can be set according to actual needs and is not limited to this.

[0069] The movable frame 82 is used to carry a plurality of second turning rollers 84 and cooperate with the fixed frame 81 to realize the storage and release of the belt 12. The specific type of the movable frame 82 can be set according to actual needs and is not limited thereto. The movable frame 82 has the same structure as the fixed frame 81, and the bottom of the movable frame 82 is also provided with a running wheel for sliding arrangement, and the running wheel is rollingly arranged on the track in the tunnel.

[0070] The first turning roller 83 and the second turning roller 84 are used to arrange the belt 12. The specific types of the first turning roller 83 and the second turning roller 84 can be set according to actual needs, and there is no limitation on this. Among them, the belt 12 is wound on multiple first turning rollers 83 and multiple second turning rollers 84. For example, after the belt 12 passes around the first first turning roller 83, it passes around the first second turning roller 84, then passes around the second first turning roller 83, and then passes around the second second turning roller 84. Thus, the belt 12 is constantly staggered between the multiple first turning rollers 83 and the multiple second turning rollers 84 to achieve storage of the belt 12.

[0071] like Figure 1 and Figure 5 As shown, in some embodiments, the system also includes: a variable frequency tensioning device 9, which is arranged on the side of the movable frame 82 away from the fixed frame 81, and the tensioning end of the variable frequency tensioning device 9 is connected to the movable frame 82, and the variable frequency tensioning device 9 is used to apply a constant force on the movable frame 82 in a direction away from the fixed frame 81.

[0072] It can be understood that since the variable frequency tensioning device 9 is arranged on the side of the movable frame 82 away from the fixed frame 81, and the tensioning end of the variable frequency tensioning device 9 is connected to the movable frame 82, the variable frequency tensioning device 9 can apply a constant force on the movable frame 82 in the direction away from the fixed frame 81, so that when the shield equipment 100 excavates and drags the belt 12, the movable frame 82 can move stably and release the belt 12, thereby ensuring the stable transportation of the slag by the belt 12 while realizing the extension of the belt 12.

[0073] It should be noted that the variable frequency tensioning device 9 is used to apply a constant force on the moving frame 82 in a direction away from the fixed frame 81, wherein the constant force should be smaller than the force when the shield equipment 100 excavates and drags the belt 12. The specific type of the variable frequency tensioning device 9 can be set according to actual needs and is not limited to this. For example, the variable frequency tensioning device 9 can be a winch.

[0074] When the belt storage device 8 releases the belt 12 until the movable frame 82 approaches the fixed frame 81 , the vulcanizing device 10 can be used to extend the belt 12 . Meanwhile, the variable frequency tensioning device 9 can be used to drive the movable frame 82 away from the fixed frame 81 while the belt 12 is extended.

[0075] The driving device 11 of the belt 12 may be disposed near the vulcanizing device 10, without limitation.

[0076] In some embodiments, the roller group 4 includes: a grooved roller, the grooved roller is used to wind the belt 12, and the groove angle of the grooved roller is in the range of 45°-60°.

[0077] It is understandable that, since the groove angle range of the grooved rollers around which the belt 12 is wound is set to 45°-60°, the groove angle of the roller group 4 is larger, thereby reducing the space occupied and enabling the system to adapt to the extreme construction space.

[0078] It should be noted that the grooved rollers with large groove angles are used to support and guide the belt 12 and reduce space occupation. The specific type of the grooved rollers can be set according to actual needs and is not limited to this.

[0079] Among them, for the reversing roller in the roller group 4, a built-in bearing roller can also be used to further reduce the space occupied.

[0080] For the system of this embodiment, the key components involved, such as: belt 12, roller group 4, scraper 72, spray device 73, roller, drive device 11, etc., can be reused with the formal excavation belt 12 machine to reduce the purchase and replacement costs of new components, while improving the utilization rate of components.

[0081] In summary, the system of this embodiment can include the following beneficial effects:

[0082] Improve construction efficiency: Through compact structure and intelligent control, the system can achieve flexible layout and efficient operation in a small construction space, overcoming the space limitation problem of traditional belt conveyors; the system can continuously and stably transport slag, improving the slag discharge efficiency. In the initial stage, the continuous working time of the belt 12 machine can reach more than 90%, which is much higher than the traditional horizontal marshaling + vertical slag discharge method.

[0083] Enhanced system stability and reliability: The use of inclination adjustment mechanism 5 and intelligent control effectively reduces equipment failures and downtime, improves system stability and reliability, and extends the service life of the equipment; the fully sealed material receiving and unloading structure and the automatic cleaning structure reduce the problems of slag leakage and channel blockage, ensuring the safety and environmental protection of the slag discharge process.

[0084] Reduce construction costs: Through the reuse of parts and equipment sharing, the repeated purchase and replacement costs of equipment are reduced, and the overall equipment investment and maintenance costs of the project are reduced; the introduction of intelligent control reduces manual intervention and the occurrence rate of failures, thereby saving a lot of manpower and material resources, and further reducing construction costs.

[0085] Civilized construction: The fully sealed structure and automatic cleaning structure effectively prevent the pollution of the environment caused by the leakage of debris, meet the requirements of environmental protection construction, and improve the level of civilized construction during the construction process.

[0086] This embodiment provides an efficient, stable, and low-cost shield tunnel starting belt conveyor system, which can significantly improve the efficiency and safety of shield tunnel starting construction, reduce costs, and has broad application prospects.

[0087] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0088] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A shield starting belt conveyor system, characterized in that: include: A frame, the frame comprising: a trolley section, a transition section and an extension section, the trolley section and the transition section are sequentially arranged at the tail of the shield equipment, and the extension section is arranged in the starting shaft and the tunnel and located at the tail of the transition section, and the extension section is used to extend along the excavation direction; A plurality of roller groups, wherein the plurality of roller groups are sequentially arranged on the trolley section, the transition section and the extension section, and the roller groups are used to wind the belt; Wherein, the transition section is provided with an inclination adjustment mechanism, and the inclination adjustment mechanism is used to reduce the inclination of the belt on the transition section when the distance between the trolley section and the extension section increases.

2. The shield starting belt conveyor system according to claim 1, characterized in that: The inclination adjustment mechanism comprises: A support frame, wherein the support frame is movably arranged on the transition section, and the head of the support frame is close to the tail of the trolley section, and the tail of the support frame is close to the head of the extension section, and a plurality of roller groups are sequentially arranged on the trolley section, the support frame and the extension section, wherein the height of the tail of the trolley section is less than the height of the head of the extension section; A first driving assembly, wherein the first driving assembly is connected to the head of the support frame by transmission, and the first driving assembly is used to drive the head of the support frame to rise and fall; A second driving assembly, the second driving assembly is connected to the rear portion of the support frame by transmission, and the second driving assembly is used to drive the rear portion of the support frame to rise and fall; The first drive assembly and the second drive assembly are used to reduce the inclination angle of the belt on the transition section when the distance between the trolley section and the extension section increases.

3. The shield starting belt conveyor system according to claim 2 is characterized in that: The first drive assembly and the second drive assembly are also used to reduce the inclination angle of the belt on the transition section when the excavation direction of the shield equipment is inclined downward.

4. The shield starting belt conveyor system according to claim 1, characterized in that: The system further comprises: A material receiving device, the material receiving device comprising: a sealed material receiving hopper, a buffer roller and a plurality of anti-overflow skirt plates; Among them, the sealed material receiving hopper, the buffer roller and the anti-overflow skirt are respectively arranged at the head of the trolley section, and the feed end of the sealed material receiving hopper is connected to the discharge end of the shield equipment, the buffer roller is located below the discharge end of the sealed material receiving hopper, the buffer roller is used to wind the belt, and the anti-overflow skirt is located on both sides of the discharge end of the sealed material receiving hopper and is arranged close to the belt.

5. The shield starting belt conveyor system according to claim 4, characterized in that: The material receiving device also includes: An overflow sensor, wherein the detection end of the overflow sensor is arranged on the inner side of the top of the anti-overflow skirt plate, and the overflow sensor is used to detect whether the slag inside the anti-overflow skirt plate overflows.

6. The shield starting belt conveyor system according to claim 1, characterized in that: The system further comprises: A discharge device, the discharge device comprising: a sealed discharge hopper and a plurality of scrapers; Wherein, the sealed discharge hopper is arranged at the tail of the extension section, and the discharge end of the belt is located in the sealed discharge hopper; The scraper is arranged in the sealed discharge hopper, and the scraping end of the scraper is close to the belt, and a plurality of the scrapers are distributed at intervals along the running direction of the belt.

7. The shield starting belt conveyor system according to claim 6, characterized in that: A spray device is arranged between adjacent scrapers, and a spray end of the spray device faces the belt.

8. The shield starting belt conveyor system according to claim 1, characterized in that: The system further comprises: A belt storage device, the belt storage device comprising: a fixed frame, a movable frame, a plurality of first turning rollers and a plurality of second turning rollers; Wherein, the fixed frame is arranged at the tail of the extension section, and the movable frame is arranged to slide relative to the fixed frame along the excavation direction; A plurality of the first turning rollers are arranged at intervals on the fixed frame, and a plurality of the second turning rollers are arranged at intervals on the movable frame, and the return portion of the belt alternately bypasses the plurality of the first turning rollers and the plurality of the second turning rollers.

9. The shield starting belt conveyor system according to claim 8, characterized in that: The system further comprises: A variable frequency tensioning device is arranged on a side of the movable frame away from the fixed frame, and a tensioning end of the variable frequency tensioning device is connected to the movable frame. The variable frequency tensioning device is used to apply a constant force on the movable frame in a direction away from the fixed frame.

10. The shield starting belt conveyor system according to claim 1, characterized in that: The roller group includes: a grooved roller, the grooved roller is used to wind the belt, and the groove angle range of the grooved roller is 45°-60°.

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