Belt conveying device for shield tunneling machine

Abstract

According to the belt conveying device for the shield tunneling machine, the height between the machine frame and the ground is adjusted through the hydraulic cylinder, and compared with the prior art that the output end of a belt conveying device for the shield tunneling machine is mostly fixed through a support, the height between a conveying belt and the ground is more convenient to adjust. According to the technical scheme, the deslagging height can be adjusted according to different deslagging purposes, for example, sludge can be loaded to a trailer, and slag can be loaded to a vertical lifting slag bucket.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyor devices, in particular to a belt conveyor device for a shield machine. Background Art

[0002] In the process of building railways and highways in mountainous areas, due to the rugged mountain roads and long distances, more and more TBM / shield machines are used to open tunnels to shorten the distance. The slag generated during the construction process needs to be transported out of the tunnel by belt conveyors.

[0003] However, due to different tunnel construction environments, the output height of the belt conveyor needs to be adjusted for suitability. The output end of the belt conveyor for shield machines in the prior art is mostly fixed with a bracket, which is not convenient for adjusting the slag discharge height according to different slag discharge purposes.

[0004] As the environment inside the tunnel is relatively humid, the debris is easily adsorbed on the surface of the conveyor belt during the long-term transportation of debris, resulting in low transportation efficiency. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a belt conveyor for a shield machine to solve the problem in the prior art that the environment in the tunnel is relatively humid, and the slag is easily adsorbed on the surface of the conveyor belt during the long-term transportation of slag by the conveyor belt, resulting in low transportation efficiency.

[0006] The utility model is realized by the following technical solutions:

[0007] A belt transport device for a shield machine comprises a conveyor belt and a frame for supporting the conveyor belt, the frame is provided with a guide groove for laying the conveyor belt, and the bottom of the guide groove is provided with a rolling support mechanism for supporting the conveyor belt; a cleaning assembly is provided at the discharge end of the guide groove, and the cleaning assembly comprises two first scrapers, one end of the two first scrapers is respectively hinged to the inner walls on both sides of the guide groove, and the other end extends obliquely toward the discharge end of the guide groove, the bottom surfaces of the two first scrapers are in contact with the surface of the conveyor belt, and elastic support assemblies are provided between the two first scrapers and the side walls of the guide groove, and when the two elastic support assemblies are in a natural state, the ends of the two first scrapers facing the discharge end of the guide groove are brought close to the middle to form an eight-shaped shape.

[0008] Further, a second groove is formed in the side wall of the guiding groove, and a second guiding rod is fixedly connected in the second groove. The second guiding rod extends along the length direction of the conveyor belt. A third mounting block is slidably connected to the second guiding rod. The elastic support assembly includes a second spring. Two ends of the second spring respectively abut against the end face of the second groove and the side wall of the third mounting block. A fourth mounting block is fixedly connected to one side of each of the two first scrapers facing the side wall of the frame. A second connecting rod is rotatably connected between the fourth mounting block and the third mounting block.

[0009] Further, a second scraper is arranged at the bottom of the frame. The second scraper is arc-shaped. Shafts are fixedly connected to both sides of the second scraper. The two shafts are respectively rotatably connected to the side walls on both sides of the guiding groove. The second scraper is located at the bottom of the frame. A vertical rod is arranged between the second scraper and the third mounting block. The upper end of the vertical rod is fixedly connected to the third mounting block, and the lower end abuts against the top surface of the second scraper. Both sides of the second scraper are kept in contact with the surface of the conveyor belt.

[0010] Further, an elastic block is fixedly connected to the bottom surface of the vertical rod, and the bottom surface of the elastic block abuts against the top surface of the second scraper.

[0011] Further, a first through hole is formed in the middle of the second scraper, and the first through hole is directly opposite to the surface of the conveyor belt.

[0012] Further, rubber strips are fixedly connected to the surfaces of the first scraper and the second scraper that are in contact with the surface of the conveyor belt.

[0013] Further, the rolling support mechanism includes a plurality of guiding rollers. The plurality of guiding rollers are rotatably connected to the frame and are located in the guiding groove. The conveyor belt is tensioned on the guiding rollers. When the guiding rollers rotate, the conveyor belt rotates in the same direction as the guiding rollers.

[0014] Further, two support frames are arranged at the discharge end of the guiding groove. The support frame includes a hydraulic cylinder. The upper end of the hydraulic cylinder is fixedly connected to the bottom surface of the frame. The lower end of the hydraulic cylinder is fixedly connected to a bottom plate. A first mounting block is slidably connected to the bottom plate. A second mounting block is fixedly connected to the bottom of the frame. A first connecting rod is arranged between the first mounting block and the second mounting block. Two ends of the first connecting rod are respectively rotatably connected to the first mounting block and the second mounting block.

[0015] Further, a first groove is formed in the bottom plate, and a first guiding rod is fixedly connected in the first groove. The first guiding rod extends along the length direction of the first groove. The first mounting block is slidably connected to the first guiding rod. A first spring is sleeved on the first guiding rod. Two ends of the first spring respectively abut against the end face of the first groove and the side wall of the first mounting block.

[0016] The beneficial effects of the present utility model are as follows:

[0017] For the belt conveying device used in the shield machine, the muck generated during the construction of the shield machine is conveyed through the conveyor belt. When the muck is transported to the discharge end of the guiding groove, the first scraper can not only clean the muck on both sides of the conveyor belt, but also guide the muck to the middle of the conveyor belt for output. When there is a large amount of muck, the elastic support assembly is compressed to prevent the first scraper from being damaged under the thrust of the muck. When there is a small amount of muck, the elastic support assembly is in a natural state, and the muck on both sides of the conveyor belt surface can be scraped off within a large range, so that the muck is more concentrated and output from the middle of the conveyor belt.

[0018] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the following description. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is of the present utility model Figure 1 a partial enlarged view of A in;

[0021] Figure 3 is of the present utility model Figure 1 a partial enlarged view of B in;

[0022] Figure 4 is a schematic diagram of the position of the second scraper of the present utility model;

[0023] Figure 5 is a top view of the present utility model;

[0024] Figure 6 is of the present utility model Figure 5 a sectional view taken along the line A-A in.

[0025] In the figure:

[0026] 11. Frame, 12. Guide roller, 13. Conveyor belt, 14. Support frame, 15. Guide groove, 16. Hydraulic cylinder, 17. First scraper, 19. Bottom plate, 20. First mounting block, 21. Second mounting block, 22. First connecting rod, 23. First groove, 24. First guide rod, 25. First spring, 26. Second groove, 27. Second guide rod, 28. Third mounting block, 29. Second spring, 30. Fourth mounting block, 31. Second connecting rod, 32. Second scraper, 33. Rotating shaft, 34. Vertical rod, 35. Elastic block, 36. First through hole, 37. Rubber strip. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0029] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the above description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "one side", "the other side", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0031] In addition, terms such as "the same" do not mean that the components are required to be absolutely the same, but there may be slight differences. The term "vertical" only means that the positional relationship between components is more vertical relative to "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0032] See also Figures 1-6 The utility model provides a technical solution: a belt transport device for a shield machine, comprising a conveyor belt 13 and a frame 11 for supporting the conveyor belt 13, the frame 11 is provided with a guide groove 15 for laying the conveyor belt 13, and the bottom of the guide groove 15 is provided with a rolling support mechanism for supporting the conveyor belt 13; a cleaning component is provided at the discharge end of the guide groove 15, and the cleaning component comprises two first scrapers 17, one end of the two first scrapers 17 is respectively hinged to the inner walls of both sides of the guide groove 15, and the other end extends obliquely toward the discharge end of the guide groove 15, the bottom surface of the two first scrapers 17 is in contact with the surface of the conveyor belt 13, and an elastic support component is provided between the two first scrapers 17 and the side walls of the guide groove 15. In the natural state of the two elastic support components, one end of the two first scrapers 17 facing the discharge end of the guide groove 15 is close to the middle to form an eight-shaped shape.

[0033] In this solution: the conveyor belt 13 is used to convey the debris generated during the construction of the shield machine. When the debris is transported to the discharge end of the guide trough 15, the first scraper 17 can not only clean the debris on both sides of the conveyor belt 13, but also guide the debris to the middle of the conveyor belt 13 for output.

[0034] When there is a lot of debris, the elastic support assembly is compressed to prevent the first scraper 17 from being damaged by the thrust of the debris.

[0035] When there is less debris, the elastic support assembly is in a natural state, and the debris on the surfaces of both sides of the conveyor belt 13 can be scraped off in a larger range, so that the debris is output from the middle of the conveyor belt 13 in a more concentrated manner.

[0036] In this embodiment: a second groove 26 is opened on the side wall of the guide groove 15, and a second guide rod 27 is fixedly connected in the second groove 26. The second guide rod 27 extends along the length direction of the conveyor belt 13, and a third mounting block 28 is slidably connected to the second guide rod 27. The elastic support assembly includes a second spring 29, and the two ends of the second spring 29 are respectively abutted against the end surface of the second groove 26 and the side wall of the third mounting block 28. A fourth mounting block 30 is fixedly connected to one side of the two first scrapers 17 facing the side wall of the frame 11, and a second connecting rod 31 is rotatably connected to the fourth mounting block 30 and the third mounting block 28.

[0037] In this solution: when the second spring 29 is in a natural state, the third mounting block 28 and the second connecting rod 31 are close to the discharge end of the guide groove 15 under the thrust of the second spring 29, and the end of the first scraper 17 facing the discharge end of the guide groove 15 is moved toward the middle under the thrust of the second connecting rod 31.

[0038] When the second spring 29 is in a compressed state, the first scraper 17 is subjected to the thrust of the muck. The third mounting block 28 and the second connecting rod 31 move away from the discharge end of the guide groove 15 under the thrust of the first scraper 17, and the second spring 29 is compressed by the thrust of the third mounting block 28. The second guide rod 27 plays a guiding role for the second spring 29.

[0039] In this embodiment: A second scraper 32 is provided at the bottom of the frame 11. The second scraper 32 is arc-shaped. Both sides of the second scraper 32 are fixedly connected with rotating shafts 33. The two rotating shafts 33 are respectively rotatably connected to the two side walls of the guide groove 15. The second scraper 32 is located at the bottom of the frame 11. A vertical rod 34 is provided between the second scraper 32 and the third mounting block 28. The upper end of the vertical rod 34 is fixedly connected to the third mounting block 28, and the lower end abuts against the top surface of the second scraper 32. Both sides of the second scraper 32 are kept in contact with the surface of the conveyor belt 13.

[0040] In this solution: A second scraper 32 is provided at the bottom of the frame 11, so that the muck that is not scraped by the first scraper 17 in the middle part of the conveyor belt 13 is scraped off at the second scraper 32. The second scraper 32 is set to be arc-shaped. When more muck is transported to the first scraper 17, the third mounting block 28 moves away from the discharge end of the guide groove 15 under the thrust of the first scraper 17. The vertical rod 34 fixedly connected to the third mounting block 28 moves along with the third mounting block 28. During the movement of the vertical rod 34, one side of the second scraper 32 is kept in closer contact with the surface of the conveyor belt 13. The surface of the conveyor belt 13 is cleaned more thoroughly.

[0041] In this embodiment: An elastic block 35 is fixedly connected to the bottom surface of the vertical rod 34, and the bottom surface of the elastic block 35 abuts against the top surface of the second scraper 32.

[0042] In this solution: By arranging an elastic block 35 between the bottom surface of the vertical rod 34 and the top surface of the second scraper 32, under the thrust of the elastic block 35, the second scraper 32 keeps both sides in close contact with the surface of the conveyor belt 13. The surface of the conveyor belt 13 is cleaned more thoroughly.

[0043] In this embodiment: A first through hole 36 is formed in the middle of the second scraper 32, and the first through hole 36 is directly opposite to the surface of the conveyor belt 13.

[0044] In this solution: A first through hole 36 is formed in the middle of the second scraper 32, so that the muck passing through the second scraper 32 can fall through the first through hole 36, preventing the muck from accumulating on the second scraper 32.

[0045] In this embodiment: Rubber strips 37 are fixedly connected to the surfaces of the first scraper 17 and the second scraper 32 that are in contact with the surface of the conveyor belt 13.

[0046] In this solution: Rubber strips 37 are fixedly connected to the surfaces of the first scraper 17 and the second scraper 32 that are in contact with the surface of the conveyor belt 13, so that the first scraper 17 and the second scraper 32 are more closely attached to the surface of the conveyor belt 13, and the surface of the conveyor belt 13 is cleaned more thoroughly.

[0047] In this embodiment: The rolling support mechanism includes a plurality of guide rollers 12. The plurality of guide rollers 12 are rotatably connected to the frame 11 and are located in the guide grooves 15. The conveyor belt 13 is tensioned on the guide rollers 12. During the rotation of the guide rollers 12, the conveyor belt 13 rotates in the same direction as the guide rollers 12.

[0048] In this solution: By arranging a plurality of guide rollers 12 in the guide grooves 15, the plurality of guide rollers 12 rotate and drive the conveyor belt 13 to transport the muck to a designated position.

[0049] In this embodiment: Two support frames 14 are provided at the discharge end of the guide groove 15. The support frame 14 includes a hydraulic cylinder 16. The upper end of the hydraulic cylinder 16 is fixedly connected to the bottom surface of the frame 11. The lower end of the hydraulic cylinder 16 is fixedly connected to a bottom plate 19. A first mounting block 20 is slidably connected to the bottom plate 19. A second mounting block 21 is fixedly connected to the bottom of the frame 11. A first connecting rod 22 is provided between the first mounting block 20 and the second mounting block 21. The two ends of the first connecting rod 22 are respectively rotatably connected to the first mounting block 20 and the second mounting block 21.

[0050] In this solution: The model of the hydraulic cylinder 16 is CJT210-LA100B800B. The height of the frame 11 from the ground is adjusted by the hydraulic cylinder 16. Compared with the prior art, the output end of the belt conveyor device for shield machines mostly uses brackets for fixation, and the height adjustment between the conveyor belt 13 and the ground is more convenient. The slag discharge height can be adjusted according to different slag discharge purposes. For example, the muck can be loaded onto a trailer or into a vertical lifting slag hopper. The hydraulic cylinder 16, the first connecting rod 22, and the bottom plate 19 are connected in a triangle, making the belt conveyor device for shield machines more firmly fixed on the ground.

[0051] In this embodiment: A first groove 23 is formed in the bottom plate 19. A first guide rod 24 is fixedly connected in the first groove 23. The first guide rod 24 extends along the length direction of the first groove 23. The first mounting block 20 is slidably connected to the first guide rod 24. A first spring 25 is sleeved on the first guide rod 24. The two ends of the first spring 25 are respectively abutted against the end face of the first groove 23 and the side wall of the first mounting block 20.

[0052] In this solution: When the first spring 25 is in its natural state, the first mounting block 20 and the first connecting rod 22 are pushed by the first spring 25 towards the discharge end of the guide groove 15, providing an auxiliary support for the frame 11.

[0053] When the second spring 29 is in a compressed state, the first mounting block 20 and the first connecting rod 22 move away from the discharge end of the guide groove 15 under the pressure of the frame 11, and the second spring 29 is compressed by the thrust of the third mounting block 28. The first guide rod 24 provides a guiding function for the first spring 25.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A belt conveyor for a shield machine, comprising a conveyor belt (13) and a frame (11) for supporting the conveyor belt (13), wherein the frame (11) is provided with a guide groove (15) for laying the conveyor belt (13), and a rolling support mechanism for supporting the conveyor belt (13) is provided at the bottom of the guide groove (15); characterized in that: The discharge end of the guide groove (15) is provided with a cleaning assembly, and the cleaning assembly comprises two first scrapers (17), one end of the two first scrapers (17) is respectively hinged to the inner walls of both sides of the guide groove (15), and the other end extends obliquely toward the discharge end of the guide groove (15), the bottom surface of the two first scrapers (17) is in contact with the surface of the conveyor belt (13), and elastic support assemblies are arranged between the two first scrapers (17) and the side walls of the guide groove (15), and in the natural state of the two elastic support assemblies, the ends of the two first scrapers (17) facing the discharge end of the guide groove (15) are close to the middle to form an eight-shaped shape.

2. The belt conveyor for a shield machine according to claim 1, characterized in that: A second groove (26) is provided on the side wall of the guide groove (15), a second guide rod (27) is fixedly connected in the second groove (26), the second guide rod (27) extends along the length direction of the conveyor belt (13), a third mounting block (28) is slidably connected to the second guide rod (27), the elastic support assembly comprises a second spring (29), two ends of the second spring (29) respectively abut against the end surface of the second groove (26) and the side wall of the third mounting block (28), a fourth mounting block (30) is fixedly connected to one side of the two first scrapers (17) facing the side wall of the frame (11), and a second connecting rod (31) is rotatably connected to the fourth mounting block (30) and the third mounting block (28).

3. The belt conveyor for a shield machine according to claim 2, characterized in that: A second scraper (32) is arranged at the bottom of the frame (11), the second scraper (32) is arc-shaped, both sides of the second scraper (32) are fixedly connected to the rotating shaft (33), the two rotating shafts (33) are rotatably connected to the side walls of the guide groove (15) respectively, the second scraper (32) is located at the bottom of the frame (11), a vertical rod (34) is arranged between the second scraper (32) and the third mounting block (28), the upper end of the vertical rod (34) is fixedly connected to the third mounting block (28), and the lower end is against the top surface of the second scraper (32), and both sides of the second scraper (32) are kept in contact with the surface of the conveyor belt (13).

4. The belt conveyor for a shield machine according to claim 3, characterized in that: The bottom surface of the vertical rod (34) is fixedly connected to an elastic block (35), and the bottom surface of the elastic block (35) abuts against the top surface of the second scraper (32).

5. The belt conveyor for a shield machine according to claim 4, characterized in that: A first through hole (36) is provided in the middle of the second scraper (32), and the first through hole (36) faces the surface of the conveyor belt (13).

6. The belt conveyor for a shield machine according to claim 5, characterized in that: The first scraper (17) and the second scraper (32) are both fixedly connected to a rubber strip (37) on the side in contact with the surface of the conveyor belt (13).

7. The belt conveyor for a shield machine according to claim 1, characterized in that: The rolling support mechanism comprises a plurality of guide rollers (12), the plurality of guide rollers (12) being rotatably connected to a frame (11) and being located in a guide groove (15), the conveyor belt (13) being tensioned on the guide rollers (12), and the conveyor belt (13) rotating in the same direction as the guide rollers (12) during the rotation of the guide rollers (12).

8. The belt conveyor for a shield machine according to claim 1, characterized in that: Two support frames (14) are provided at the discharge end of the guide groove (15), and the support frame (14) includes a hydraulic cylinder (16). The upper end of the hydraulic cylinder (16) is fixedly connected to the bottom surface of the frame (11), and the lower end of the hydraulic cylinder (16) is fixedly connected to a bottom plate (19). A first mounting block (20) is slidably connected to the bottom plate (19). A second mounting block (21) is fixedly connected to the bottom of the frame (11), and a first connecting rod (22) is provided between the first mounting block (20) and the second mounting block (21), and the two ends of the first connecting rod (22) are rotatably connected to the first mounting block (20) and the second mounting block (21), respectively.

9. The belt conveyor for a shield machine according to claim 8, characterized in that: The bottom plate (19) is provided with a first groove (23), a first guide rod (24) is fixedly connected in the first groove (23), the first guide rod (24) extends along the length direction of the first groove (23), the first mounting block (20) is slidably connected to the first guide rod (24), a first spring (25) is sleeved on the first guide rod (24), and two ends of the first spring (25) are respectively against the end surface of the first groove (23) and the side wall of the first mounting block (20).

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