Three-section hinged belt conveyor for TBM (tunnel boring machine)
By designing a three-section articulated belt conveyor and utilizing deflection cylinders and tensioning components, the problem of turning the TBM main belt conveyor in small-radius tunnels was solved, achieving efficient material conveying in tunnels with different turning angles.
Patent Information
- Application Number
- CN202423175878.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing integrated structure of the TBM main conveyor belt cannot turn with the TBM body in tunnels with small radii, which limits the scope of application of TBMs.
Design a three-section articulated belt conveyor. Through the articulated structure between the first, second and third belt conveyors, and by using the first and second deflection cylinders to control the deflection angle, combined with the tensioning component to maintain the tension of the conveyor belt, material conveying in tunnels with different turning angles can be realized.
This improves the applicability of belt conveyors in tunnels with different turning angles, ensures that the conveyor belt is always taut, and improves the material conveying efficiency.
Smart Images
Figure CN223619469U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of conveying device technology, specifically relating to a three-section articulated belt conveyor for TBM. Background Technology
[0002] TBMs are widely used in hard rock tunnel excavation, enabling continuous operation of excavation, support, and muck removal. They are factory-integrated, assembly-line tunnel construction equipment combining mechanical, electrical, hydraulic, optical, and pneumatic systems. Their working principle involves using rotary cutters on a rotating cutterhead to shear and break the rock. The cutterhead's bucket picks up the rock debris, which falls onto the main conveyor belt for transport. From there, it is transported to the outside of the tunnel via a traction muck car or a continuous tunnel conveyor. The main conveyor belt, a key component of the TBM, not only transfers the cutterhead-cut rock debris to the subsequent traction muck car or continuous tunnel conveyor but also adapts to various turning radii as the TBM moves. Currently, commonly used TBM main conveyor belts employ an integrated structure, allowing for continued rock debris transport even when the TBM is excavating in a straight line or making large turning radii. However, in tunnels with small turning radii, the integrated conveyor belt cannot turn with the TBM body, thus limiting the minimum turning radius that the TBM can excavate and significantly reducing its applicability. The integrated conveyor belt cannot turn with the TBM body in tunnels with small radii, limiting the minimum turning radius that the TBM can excavate. To improve the applicability of the TBM, the adaptability problem of the integrated conveyor belt structure must be solved. Utility Model Content
[0003] The purpose of this invention is to provide a three-section articulated belt conveyor for TBMs, aiming to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a three-section articulated belt conveyor for a TBM, comprising a first belt conveyor, a second belt conveyor, a third belt conveyor, and a material discharge assembly. The first belt conveyor, the second belt conveyor, the third belt conveyor, and the material discharge assembly are connected end to end in sequence and have conveyor belts mounted on their surfaces. The first belt conveyor is articulated with the second belt conveyor, the second belt conveyor is articulated with the third belt conveyor, and the third belt conveyor is inserted into the material discharge assembly. A tensioning assembly is installed at the insertion point between the third belt conveyor and the material discharge assembly.
[0005] As a preferred technical solution of this utility model, the first belt conveyor includes a first frame, a redirecting roller is installed at one end of the first frame, a first trough-shaped idler and a buffer bed are installed at the top of the first frame, a first return idler is installed at the bottom of the first frame, a first insert is installed at the other end of the first frame, a first insertion hole is opened on the surface of the first insert, a first crossbeam is installed at the bottom of the first frame at one end of the first insert, and a first rotating seat is installed on the surface of the first crossbeam;
[0006] The second belt conveyor includes a second frame, a second trough-shaped idler roller installed on the top of the second frame, a second return idler roller installed on the bottom of the second frame, and sockets installed at both ends of the second frame. The surface of each socket has a second insertion hole. A first insert is inserted into one of the sockets, and a connecting pin is installed in the first insertion hole and the second insertion hole. A second crossbeam is installed at both ends of the bottom of the second frame, and a second rotating seat is installed on the surface of the second crossbeam. One of the second rotating seats is rotatably connected to one end of a first deflection cylinder, and the other end of the first deflection cylinder is rotatably connected to the first rotating seat.
[0007] As a preferred technical solution of this utility model, the third belt conveyor includes a third frame, a third trough-shaped idler roller is installed on the top of the third frame, a third return idler roller is installed on the bottom of the third frame, a tension roller is rotatably installed at one end of the bottom of the third frame, a second insert is installed at the other end of the third frame, the surface of the second insert has a third insertion hole, the second insert is inserted into another socket and a connecting pin is also installed between the second insertion hole and the third insertion hole, a third crossbeam is installed at the bottom of the third frame at one end of the second insert, a third rotating seat is installed on the surface of the third crossbeam, the third rotating seat is rotatably connected to one end of a second deflection cylinder, the other end of the second deflection cylinder is rotatably connected to another second rotating seat, and two slots are installed on both sides of one end of the third frame at the tension roller.
[0008] As a preferred technical solution of this utility model, the material feeding assembly includes a material feeding hopper, an active roller installed inside the material feeding hopper, a drive motor installed on one side of the material feeding hopper, the drive motor being used to drive the active roller to rotate, a cleaner installed inside the material feeding hopper on one side of the active roller, and extension plates provided on both sides of the front end of the material feeding hopper, the extension plates being inserted into corresponding slots.
[0009] As a preferred technical solution of this utility model, the tensioning assembly includes two connecting parts, one of which is installed on the extension plate and the other is installed on the slot surface near one end of the hopper. A screw is inserted between the two connecting parts, and a spring is sleeved on the outside of the screw. The spring is located between the two connecting parts, and nuts are threaded on both ends of the screw on the sides of the two connecting parts.
[0010] As a preferred technical solution of this utility model, the transmission belt is sleeved between the drive roller and the redirecting roller, and the bottom of the transmission belt is located on top of the first return roller, the second return roller, the third return roller and the tension roller.
[0011] As a preferred technical solution of this utility model, the cleaner is a scraper installed in the hopper, and one edge of the cleaner is attached to the surface of the conveyor belt.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Since the first belt conveyor, the second belt conveyor, and the third belt conveyor are hinged, the first deflection cylinder and the second deflection cylinder can be set to allow the first belt conveyor, the second belt conveyor, and the third belt conveyor to deflect, thereby realizing the function of the belt conveyor turning in the tunnel. Moreover, by controlling the lifting stroke of the first deflection cylinder and the second deflection cylinder, the deflection angle of the belt conveyor can be controlled, so that the belt conveyor can be used in tunnels with different turning angles, thereby improving the practicality of the belt conveyor. When the belt conveyor deflects, the tensioning component can compress the spring to keep the transmission belt in a taut state, thereby improving the material conveying effect. Attached Figure Description
[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the first belt conveyor in this utility model;
[0016] Figure 3 This is a schematic diagram of the bottom structure of the first belt conveyor in this utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the second belt conveyor in this utility model;
[0018] Figure 5 This is a schematic diagram of the bottom structure of the second belt conveyor in this utility model;
[0019] Figure 6 This is a schematic diagram of the structure of the third belt conveyor in this utility model;
[0020] Figure 7 This is a schematic diagram of the bottom structure of the third belt conveyor in this utility model;
[0021] Figure 8 This is a schematic diagram of the material feeding assembly in this utility model;
[0022] Figure 9 This is a schematic diagram of the tensioning component in this utility model;
[0023] Figure 10 This is a structural diagram of the present invention in use.
[0024] In the diagram: 1. First belt conveyor; 11. First frame; 12. Idling roller; 13. First trough idler; 14. Buffer bed; 15. First return idler; 16. First insert; 17. First insertion hole; 18. First crossbeam; 19. First rotating seat; 2. Second belt conveyor; 21. Second frame; 22. Second trough idler; 23. Second return idler; 24. Socket; 25. Second insertion hole; 26. Second crossbeam; 27. Second rotating seat; 3. Third belt conveyor; 31. 31. Third frame; 32. Third trough idler; 33. Third return idler; 34. Tensioner roller; 35. Second insert plate; 36. Third insertion hole; 37. Third crossbeam; 38. Third rotating seat; 39. Slot; 4. Discharge assembly; 41. Discharge hopper; 42. Drive roller; 43. Sweeper; 44. Extension plate; 5. Conveyor belt; 6. Tensioning assembly; 61. Connector; 62. Screw; 63. Spring; 64. Nut; 7. First deflection cylinder; 8. Second deflection cylinder. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figures 1-10The present invention provides the following technical solution: a three-section articulated belt conveyor for TBM, comprising a first belt conveyor 1, a second belt conveyor 2, a third belt conveyor 3 and a material discharge assembly 4, wherein the first belt conveyor 1, the second belt conveyor 2, the third belt conveyor 3 and the material discharge assembly 4 are connected end to end in sequence and a transmission belt 5 is installed on the surface, wherein the first belt conveyor 1 is articulated with the second belt conveyor 2, the second belt conveyor 2 is articulated with the third belt conveyor 3, the third belt conveyor 3 is inserted into the material discharge device, and a tensioning assembly 6 is installed at the insertion point of the third belt conveyor 3 and the material discharge device.
[0027] In this embodiment, the first belt conveyor 1 includes a first frame 11. A redirecting roller 12 is installed at one end of the first frame 11. A first trough-shaped idler 13 and a buffer bed 14 are installed at the top of the first frame 11. A first return idler 15 is installed at the bottom of the first frame 11. A first insert 16 is installed at the other end of the first frame 11. A first insertion hole 17 is opened on the surface of the first insert 16. A first crossbeam 18 is installed at the bottom of the first frame 11 at one end of the first insert 16. A first rotating seat 19 is installed on the surface of the first crossbeam 18.
[0028] Specifically, the first trough-shaped idler roller 13 can cause the two sides of the conveyor belt 5 to tilt up, thereby preventing the material from falling during the conveying process. After passing the redirecting roller 12, the conveyor belt 5 rotates back to the material drop assembly 4 to receive the material.
[0029] In this embodiment, the second belt conveyor 2 includes a second frame 21. A second trough-shaped idler roller 22 is installed on the top of the second frame 21, and a second return idler roller 23 is installed on the bottom of the second frame 21. Sockets 24 are installed at both ends of the second frame 21. A second insertion hole 25 is opened on the surface of the socket 24. A first insert 16 is inserted into one of the sockets 24, and a connecting pin is installed in the first insertion hole 17 and the second insertion hole 25. A second crossbeam 26 is installed at both ends of the bottom of the second frame 21. A second rotating seat 27 is installed on the surface of the second crossbeam 26. One of the second rotating seats 27 is rotatably connected to one end of the first deflection cylinder 7, and the other end of the first deflection cylinder 7 is rotatably connected to the first rotating seat 19.
[0030] Specifically, the first insert 16 is inserted into the socket 24 at one end of the second frame 21 and connected to the first belt conveyor 1 and the second belt conveyor 2 by inserting the connecting pin into the first socket 17 and the second socket 25. A first deflection cylinder 7 is installed between the first rotating seat 19 and the corresponding second rotating seat 27. Therefore, when the first deflection cylinder 7 works, the first belt conveyor 1 will deflect along the connecting pin in the first socket 17 and the second socket 25 as the center, thereby realizing the turning of the belt conveyor and enabling the belt conveyor to turn and transport within a tunnel with a small radius.
[0031] In this embodiment, the third belt conveyor 3 includes a third frame 31. A third trough-shaped idler roller 32 is installed on the top of the third frame 31, and a third return idler roller 33 is installed on the bottom of the third frame 31. A tension roller 34 is rotatably installed at one end of the bottom of the third frame 31, and a second insert 35 is installed at the other end of the third frame 31. A third insertion hole 36 is opened on the surface of the second insert 35. The second insert 35 is inserted into another socket 24, and a connecting pin is also installed between the second insertion hole 25 and the third insertion hole 36. A third crossbeam 37 is installed at the bottom of the third frame 31 at one end of the second insert 35. A third rotating seat 38 is installed on the surface of the third crossbeam 37. The third rotating seat 38 is rotatably connected to one end of the second deflection cylinder 8, and the other end of the second deflection cylinder 8 is rotatably connected to another second rotating seat 27. Two slots 39 are installed on both sides of one end of the third frame 31 at the tension roller 34.
[0032] Specifically, the second insert 35 at one end of the third frame 31 is inserted into the socket 24 at the other end of the second frame 21 and then inserted into the second socket 25 and the third socket 36 through the connecting pin, thereby connecting the second belt conveyor 2 and the third belt conveyor 3 in this way. Moreover, a second deflection cylinder 8 is installed between the second rotating seat 27 and the third rotating seat 38. Therefore, when the second deflection cylinder 8 is working, the second belt conveyor 2 will deflect along the connecting pin in the second socket 25 and the third socket 36 as the center, thereby realizing the turning of the belt conveyor. This allows the belt conveyor to turn and transport within a tunnel with a small radius. Furthermore, since the positions of the first belt conveyor 1 and the second belt conveyor 2 can be deflected, and the positions of the second belt conveyor 2 and the third belt conveyor 3 can be deflected, the belt conveyor can complete the turning within the tunnel, making it easier to transport slag in tunnels with curves.
[0033] In the example of this city, the material feeding assembly 4 includes a material feeding hopper 41, an active roller 42 is installed inside the material feeding hopper 41, a drive motor is installed on one side of the material feeding hopper 41, the drive motor is used to drive the active roller 42 to rotate, a sweeper 43 is installed inside the material feeding hopper 41 on one side of the active roller 42, and extension plates 44 are provided on both sides of the front end of the material feeding hopper 41, and the extension plates 44 are inserted into the corresponding slots 39.
[0034] Specifically, the drive motor drives the active roller 42 to rotate, and the active roller 42 and the redirecting roller 12 enable the conveyor belt 5 to transport materials. When the conveyor belt 5 returns to the hopper 41 after passing the redirecting roller 12, the cleaner 43 can clean the impurities on the surface of the conveyor belt 5, thereby improving the material conveying effect. The extension plate 44 is inserted into the slot 39 at one end of the third frame 31, thereby connecting the hopper 41 and the third frame 31.
[0035] In this embodiment, the tensioning assembly 6 includes two connectors 61. One connector 61 is mounted on the extension plate 44, and the other connector 61 is mounted on the surface of the slot 39 near one end of the hopper 41. A screw 62 is inserted between the two connectors 61. A spring 63 is sleeved on the outside of the screw 62. The spring 63 is located between the two connectors 61. Nuts 64 are threaded onto both ends of the screw 62 on the sides of the two connectors 61.
[0036] Specifically, when the first deflection cylinder 7 and the second deflection cylinder 8 cause the positions of the first belt conveyor 1 and the second belt conveyor 2 to deflect, one of the connecting parts 61 will compress the spring 63, thereby causing the extension plate 44 to move into the slot 39. In this way, the transmission belt 5 is always kept in a taut state. The initial compression of the spring 63 can be adjusted by adjusting the position of the nuts 64 at both ends of the adjusting screw 62, so that the transmission belt 5 can be in the optimal tension state.
[0037] In this embodiment, the transmission belt 5 is sleeved between the drive roller 42 and the redirecting roller 12, and the bottom of the transmission belt 5 is located on top of the first return idler 15, the second return idler 23, the third return idler 33 and the tension roller 34.
[0038] Specifically, the first trough idler 13, the second trough idler 22, and the third trough idler 32 allow the sides of the conveyor belt 5 to be raised, thereby preventing materials from falling during the conveying process. When the conveyor belt 5 conveys the material to the buffer bed 14, the buffer bed 14 cushions the impact of the material falling into the first belt conveyor 1 on the conveyor belt 5 and the machine body, preventing damage to the conveyor belt 5 due to the impact of the material falling at high speed. When the material is conveyed by the conveyor belt 5 to the redirecting roller 12, the conveyor belt 5 redirects and rotates, and the material is conveyed to the designated position. The tension roller 34 can tension the conveyor belt 5. The first return idler 15, the second return idler 23, and the third return idler 33 can support the conveyor belt 5 when it rotates.
[0039] In this embodiment, the cleaner 43 is a scraper installed in the hopper 41, and one edge of the cleaner 43 is attached to the surface of the conveyor belt 5.
[0040] Specifically, when the conveyor belt 5 rotates to the drive roller 42, the cleaner 43 can scrape and clean the impurities on the surface of the conveyor belt 5.
[0041] It is worth noting that the belt conveyor of this application is designed with a three-section body, and the adjacent sections can be hinged together, thereby adjusting the angle between the adjacent sections. This allows the belt conveyor to adapt to the excavation of tunnels with different turning radii by the TBM, especially for tunnels with small turning radii. It solves the problem that the main belt conveyor with an integral structure cannot turn with the TBM body when the tunnel turning radius is small, thus increasing the range of tunnels with different turning radii that the TBM can adapt to. Moreover, the number of sections in this application is not limited to three sections. The number of sections can be adjusted according to the actual situation to adapt to tunnels with different turning radii. Furthermore, the first deflection cylinder 7 and the second deflection cylinder 8 can be replaced by other power devices with similar functions.
[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A three-section articulated belt conveyor for a TBM, comprising a first belt conveyor (1), a second belt conveyor (2), a third belt conveyor (3), and a material unloading assembly (4), characterized in that: The first belt conveyor (1), the second belt conveyor (2), the third belt conveyor (3) and the unloading assembly (4) are connected end to end in sequence and a transmission belt (5) is installed on the surface. The first belt conveyor (1) is hinged to the second belt conveyor (2), the second belt conveyor (2) is hinged to the third belt conveyor (3), the third belt conveyor (3) is inserted into the unloading device, and a tensioning assembly (6) is installed at the insertion point of the third belt conveyor (3) and the unloading device.
2. A three-section articulated belt conveyor for a TBM according to claim 1, characterized in that: The first belt conveyor (1) includes a first frame (11), a redirecting roller (12) is installed at one end of the first frame (11), a first trough idler (13) and a buffer bed (14) are installed at the top of the first frame (11), a first return idler (15) is installed at the bottom of the first frame (11), a first insert (16) is installed at the other end of the first frame (11), a first insertion hole (17) is opened on the surface of the first insert (16), a first crossbeam (18) is installed at the bottom of the first frame (11) at one end of the first insert (16), and a first rotating seat (19) is installed on the surface of the first crossbeam (18). The second belt conveyor (2) includes a second frame (21), a second trough roller (22) is installed on the top of the second frame (21), a second return roller (23) is installed on the bottom of the second frame (21), and sockets (24) are installed at both ends of the second frame (21). The surface of the socket (24) is provided with a second insertion hole (25). The first insert (16) is inserted into one of the sockets (24) and a connecting pin is installed in the first insertion hole (17) and the second insertion hole (25). A second crossbeam (26) is installed at both ends of the bottom of the second frame (21). A second rotating seat (27) is installed on the surface of the second crossbeam (26). One of the second rotating seats (27) is rotatably connected to one end of the first deflection cylinder (7), and the other end of the first deflection cylinder (7) is rotatably connected to the first rotating seat (19).
3. A three-section articulated belt conveyor for a TBM according to claim 2, characterized in that: The third belt conveyor (3) includes a third frame (31), a third trough-shaped idler roller (32) is installed on the top of the third frame (31), a third return idler roller (33) is installed on the bottom of the third frame (31), a tension roller (34) is rotatably installed at one end of the bottom of the third frame (31), and a second insert (35) is installed at the other end of the third frame (31). The surface of the second insert (35) is provided with a third insertion hole (36). The second insert (35) is inserted into another socket (24) and the second insertion hole (26) is connected to the socket (24). 5) A connecting pin is also installed with the third insertion hole (36). The bottom of the third frame (31) is equipped with a third crossbeam (37) at one end of the second insert (35). A third rotating seat (38) is installed on the surface of the third crossbeam (37). The third rotating seat (38) is rotatably connected to one end of the second deflection cylinder (8). The other end of the second deflection cylinder (8) is rotatably connected to another second rotating seat (27). Two slots (39) are installed on both sides of one end of the third frame (31) located on the tension roller (34).
4. A three-section articulated belt conveyor for a TBM according to claim 3, characterized in that: The material feeding assembly (4) includes a feeding hopper (41), an active roller (42) is installed inside the feeding hopper (41), a drive motor is installed on one side of the feeding hopper (41), the drive motor is used to drive the active roller (42) to rotate, a cleaner (43) is installed inside the feeding hopper (41) on one side of the active roller (42), and extension plates (44) are provided on both sides of the front end of the feeding hopper (41), the extension plates (44) are inserted into the corresponding slots (39).
5. A three-section articulated belt conveyor for a TBM according to claim 4, characterized in that: The tensioning assembly (6) includes two connectors (61), one of which is mounted on the extension plate (44) and the other is mounted on the surface of the slot (39) near one end of the hopper (41). A screw (62) is inserted between the two connectors (61). A spring (63) is sleeved on the outside of the screw (62). The spring (63) is located between the two connectors (61). Nuts (64) are threaded onto the sides of the two connectors (61) at both ends of the screw (62).
6. A three-section articulated belt conveyor for a TBM according to claim 3, characterized in that: The transmission belt (5) is sleeved between the drive roller (42) and the redirecting roller (12), and the bottom of the transmission belt (5) is located on top of the first return idler (15), the second return idler (23), the third return idler (33) and the tension roller (34).
7. A three-section articulated belt conveyor for a TBM according to claim 4, characterized in that: The cleaner (43) is a scraper installed in the hopper (41), and one edge of the cleaner (43) is attached to the surface of the conveyor belt (5).