Steep slope tunnel spoil transporting device

Abstract

The utility model discloses a kind of steep slope tunnel spoil transport devices, it is related to tunnel construction technical field, it includes rail transport equipment and obliquely installed conveyer belt, further include: lower support subassembly, it is rotatably supported in the lower end of the conveyer belt;Middle support subassembly, it includes middle support frame, fixedly installed in the middle support frame and linear drive piece that telescopic end vertically upward projects, multiple vertical settings and lower end are all fixedly connected in the middle support frame of limit rod, while fixedly connected in the telescopic end of the linear drive piece adapter frame and two coaxial middle shafts, the upper end of each limit rod is vertically slidably connected in the adapter frame, one end of two middle shafts is respectively fixedly connected in the two sides of conveyer belt middle upper end, and another end of two middle shafts is rotatably connected in the adapter frame. The present application can improve the technical problem that the inclination angle of conveyer belt is inconvenient to adjust in prior art.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a device for transporting excavated soil in steep slope tunnels. Background Technology

[0002] During tunnel excavation, excavated soil and debris are continuously generated and need to be transported outside the tunnel in a timely manner. According to section 8.1.1 of the "Technical Specification for Highway Tunnel Construction" (JTG / T 3660-2020), trackless truck transport is preferred for transporting excavated soil and debris. When ventilation, turning around, passing other vehicles, or climbing slopes are difficult, rail transport, belt conveyor, or a combination of these methods can be used. Therefore, when transporting excavated soil and debris in steep-slope tunnels, rail transport is the preferred method. Conventional rail transport equipment includes mine cars or conveyor belts, with trolley cars pulling the mine cars on tracks or belt conveyors used for transport.

[0003] However, regardless of the rail transport method used, when loading the slag at the starting point of the slag transport, it is necessary to first transport the slag to a rail transport device (mine car or conveyor belt) with a certain height. Usually, the slag is loaded manually to complete the entire loading operation, which is extremely time-consuming and labor-intensive. To reduce the difficulty of loading, an inclined conveyor belt is supported at the mine car or conveyor belt. The lower end of the conveyor belt is close to the starting point, and the upper end is higher than the starting point of the mine car or conveyor belt. At this time, it is only necessary to add the slag to the lower end of the conveyor belt, which can greatly reduce the workload.

[0004] However, as the tunnel deepens and the spoil heaps extend forward, the tunnel's inclination angle may differ between these locations. Consequently, the installation points of the inclined conveyor belts also need to be adjusted. This necessitates adaptive adjustments to the conveyor belt's installation position and inclination angle to ensure its correct relative position to the rail-mounted transport equipment (mine cars or conveyor belts), allowing the spoil transported by the conveyor belt to accurately enter the mine cars or conveyor belts. However, existing conveyor belts are typically inclined structures supported by fixed brackets, making it difficult to adjust the inclination angle according to the steepness of the slope to maintain the correct relative position of the conveyor belt to the rail-mounted transport equipment (mine cars or conveyor belts), leading to a relative decrease in operational efficiency. Utility Model Content

[0005] This application provides a soil transport device for steep slope tunnels, which can improve the technical problem in the prior art where it is inconvenient to adjust the tilt angle of the conveyor belt to ensure the correct relative position of the conveyor belt with respect to the rail transport equipment, resulting in a relative decrease in operating efficiency.

[0006] This application provides a device for transporting excavated soil in steep slope tunnels, employing the following technical solution:

[0007] A device for transporting excavated soil from a steep slope tunnel includes a rail-guided transport system and an inclined conveyor belt, and further includes:

[0008] The lower support assembly is rotatably supported at the lower end of the conveyor belt;

[0009] The central support assembly includes a central support frame, a linear drive component fixedly installed on the central support frame with its telescopic end extending vertically upward, multiple vertically arranged limiting rods with their lower ends fixedly connected to the central support frame, a transfer frame fixedly connected to the telescopic end of the linear drive component, and two coaxial central shafts. The upper ends of each limiting rod are vertically slidably connected to the transfer frame. One end of each of the two central shafts is fixedly connected to both sides of the upper end of the conveyor belt, and the other ends of each of the two central shafts are rotatably connected to the transfer frame.

[0010] Optionally, the central support assembly further includes a plurality of central rollers, each of which is fixedly connected to the lower end of the central support frame.

[0011] Optionally, the central support assembly further includes a plurality of screws, each screw being evenly distributed at one end of the two central shafts and simultaneously threaded to the conveyor belt.

[0012] Optionally, the lower support assembly includes a lower support frame, two lower support clamps, and two lower shafts. The two lower support clamps are fixedly connected to the upper end of the lower support frame, and one end of each of the two lower shafts is fixedly connected to both sides of the lower end of the conveyor belt, and the other end is rotatably connected to the two lower support clamps.

[0013] Optionally, the lower support assembly further includes a plurality of lower rollers, each of which is fixedly connected to the lower end of the lower support frame.

[0014] Optionally, the system also includes a positioning frame assembly, which includes an upper positioning frame, two positioning clamps, two positioning rods, and two adapter shafts. The two positioning clamps are fixedly connected to the lower end of the upper positioning frame, and both positioning clamps open in a direction away from the middle support assembly. One end of each of the two positioning rods is fixedly connected to both sides of the rail transport equipment, and both positioning rods enter the positioning clamps from the openings of the corresponding positioning clamps. One end of each of the two adapter shafts is fixedly connected to both sides of the upper end of the conveyor belt, and the other end is rotatably connected to the upper end of the upper positioning frame.

[0015] Optionally, the upper positioning frame includes a crossbeam, two vertical rods whose lower ends are fixedly connected to the upper side of the crossbeam, and two positioning legs whose upper ends are slidably connected to the lower side of the crossbeam. The upper ends of the two vertical rods are rotatably connected to the other ends of the two adapter shafts, and the lower ends of the two positioning legs are fixedly connected to the two positioning clamps. A second channel for the rail transport equipment to enter and exit is formed between the two positioning legs.

[0016] Optionally, the upper positioning frame further includes two adapter legs and two limiting rods. The upper ends of the two adapter legs are vertically slidably connected to the lower ends of the two positioning legs, and the lower ends of the two adapter legs are fixedly connected to the two positioning clamps. The two limiting rods are simultaneously inserted into the corresponding positioning legs and adapter legs.

[0017] Optionally, the positioning frame assembly further includes a guide plate located directly below the upper end of the conveyor belt. The guide plate is inclined and its upper end is fixedly connected to the upper positioning frame, while its other end is inclined downward toward the conveyor belt.

[0018] Optionally, both positioning clamps are slidably connected to inclined rods, both inclined rods are inclined and one end of each is closed at the opening of the corresponding positioning clamp, and the other end of each is fitted with a spring, the two ends of which are fixedly connected to the corresponding positioning clamp and the other end of the inclined rod.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] During conveyor belt installation, the lower support assembly and the middle support assembly support the lower and upper-middle ends of the conveyor belt respectively to ensure stable installation. During installation, the transfer frame can be moved vertically by a linear drive component to change the support height of the transfer frame on the central shaft, thereby adjusting the tilt angle of the conveyor belt. This improves the technical problem in the prior art where it is inconvenient to adjust the tilt angle of the conveyor belt to ensure the correct relative position of the conveyor belt to the rail transport equipment, which leads to a relative decrease in operating efficiency. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of the slag and soil transportation device for steep slope tunnels of this utility model.

[0022] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0023] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0024] Figure 4 This is a second-view structural diagram of the slag and soil transportation device for steep slope tunnels of this utility model.

[0025] Figure 5 yes Figure 4 Enlarged view of section C.

[0026] Explanation of reference numerals in the attached drawings: 1. Rail transport equipment; 2. Conveyor belt; 3. Lower support assembly; 31. Lower support frame; 32. Lower support clamp; 33. Lower shaft; 34. Lower roller; 4. Middle support assembly; 41. Middle support frame; 42. Linear drive component; 43. Limiting rod; 44. Adapter frame; 45. Central shaft; 46. Middle roller; 47. Screw; 5. Positioning frame assembly; 51. Upper positioning frame; 511. Crossbeam; 512. Vertical rod; 513. Positioning leg; 5131. Insertion hole; 514. Adapter leg; 5141. Positioning hole; 515. Limiting rod; 52. Positioning clamp; 53. Positioning rod; 54. Adapter shaft; 55. Diagonal rod; 56. Spring; 57. Guide plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0028] This application discloses a device for transporting excavated soil in steep slope tunnels.

[0029] Reference Figures 1-5 A device for transporting excavated soil from a steep slope tunnel includes a rail-guided transport device 1 and an inclined conveyor belt 2, and further includes:

[0030] The lower support assembly 3 is rotatably supported at the lower end of the conveyor belt 2;

[0031] The middle support assembly 4 includes a middle support frame 41, a linear drive member 42 fixedly installed on the middle support frame 41 with its telescopic end extending vertically upward, multiple vertically arranged limiting rods 43 with their lower ends fixedly connected to the middle support frame 41, a transfer frame 44 fixedly connected to the telescopic end of the linear drive member 42, and two coaxial central shafts 45. The upper ends of each limiting rod 43 are vertically slidably connected to the transfer frame 44. One end of each of the two central shafts 45 is fixedly connected to both sides of the upper end of the conveyor belt 2, and the other end of each of the two central shafts 45 is rotatably connected to the transfer frame 44.

[0032] The middle support assembly 4 supports both sides of the upper part of the conveyor belt 2, so that the middle support assembly 4 and the conveyor belt 2 together form an entry space away from the lower support assembly 3. The entry space is used for the rail transport equipment 1 to enter, so that the upper end of the conveyor belt 2 is directly above the rail transport equipment 1, realizing the correct installation of the conveyor belt 2 relative to the rail transport equipment 1. When installing the conveyor belt 2, the lower support assembly 3 and the middle support assembly 4 support the lower end and the upper middle end of the conveyor belt 2 respectively to ensure the stability of the installation of the conveyor belt 2. During the installation process, the adapter 44 can be driven to move vertically by the linear drive component 42 to change the support height of the adapter 44 on the central shaft 45, thereby adjusting the tilt angle of the conveyor belt 2. This improves the technical problem in the prior art that it is not convenient to adjust the tilt angle of the conveyor belt 2 to ensure the correct relative position of the conveyor belt 2 relative to the rail transport equipment 1, which leads to a relative decrease in operation efficiency.

[0033] During the adjustment of the tilt angle of conveyor belt 2, the transfer frame 44 and the central shaft 45 rotate relative to each other, and at the same time, the lower support assembly 3 and the conveyor belt 2 rotate relative to each other. During the transportation of excavated soil, the lower end of the conveyor belt 2 is close to the excavated soil stacking position, and the operators only need to transfer the excavated soil to the lower end of the conveyor belt 2.

[0034] In this embodiment, the rail transport equipment 1 refers to the mining car or conveyor belt in the prior art. The figure shows a mining car. Of course, when it is a mining car, a track needs to be laid on the ground.

[0035] The conveyor belt 2 is a conveyor belt structure known to those skilled in the art, comprising a frame, a drive roller rotatably connected to the frame, a driven roller rotatably connected to the frame, a belt tensioned between the drive roller and the driven roller, and a motor whose output end is coaxially fixedly connected to one end of the drive roller. In this embodiment, the lower support assembly 3 is rotatably supported at the lower end of the frame of the conveyor belt 2, and the middle support assembly 4 is supported at the upper middle end of the frame of the conveyor belt 2.

[0036] Reference Figure 1 and Figure 2 The central support assembly 4 also includes multiple central rollers 46, each of which is fixedly connected to the lower end of the central support frame 41.

[0037] The central support frame 41 is supported by rolling through the central rollers 46, which facilitates the movement of the entire conveyor belt 2.

[0038] Of course, at the work site, in order to facilitate the smooth movement of the conveyor belt 2 and the smooth laying of the rail transport equipment 1, the ground will be initially leveled. This process is a conventional technical means in this field. Furthermore, during the transportation of excavated soil via the conveyor belt 2, the brakes on each of the central rollers 46 can be applied to ensure the support stability of the central support assembly 4.

[0039] The central support assembly 4 also includes a plurality of screws 47, each screw 47 being evenly distributed at one end of the two central shafts 45 and simultaneously threadedly connected to the conveyor belt 2.

[0040] A stable fixed connection between the conveyor belt 2 and the central shaft 45 can be achieved by screws, and when it is necessary to disassemble or assemble the central support assembly 4, it can be quickly achieved by turning each screw 47.

[0041] Reference Figure 1 and Figure 3 The lower support assembly 3 includes a lower support frame 31, two lower support clamps 32 and two lower shafts 33. The two lower support clamps 32 are fixedly connected to the upper end of the lower support frame 31. One end of the two lower shafts 33 is fixedly connected to both sides of the lower end of the frame of the conveyor belt 2, and the other end is rotatably connected to the two lower support clamps 32.

[0042] The lower end of the conveyor belt 2 is stably supported by the connection of two lower shaft rods 33, the lower support frame 31, and two lower support clamps 32.

[0043] Based on the above embodiment, both lower support clamps 32 have an upward opening structure to form a first channel for the corresponding lower shaft 33 to enter and exit, thus enabling quick assembly and disassembly between the conveyor belt 2 and the lower support assembly 3.

[0044] The lower support assembly 3 also includes multiple lower rollers 34, each of which is fixedly connected to the lower end of the lower support frame 31. This allows for rolling support of the lower support frame 31 via the lower rollers 34, facilitating movement of the entire conveyor belt 2.

[0045] Reference Figure 4 and Figure 5 The steep slope tunnel slag transport device of this embodiment also includes a positioning frame assembly 5. The positioning frame assembly 5 includes an upper positioning frame 51, two positioning clamps 52, two positioning rods 53 and two adapter shafts 54. The two positioning clamps 52 are fixedly connected to the lower end of the upper positioning frame 51, and the two positioning clamps 52 are open in the direction away from the middle support component 4. One end of the two positioning rods 53 is fixedly connected to both sides of the rail transport equipment 1, and the two positioning rods 53 enter the positioning clamps 52 from the opening of the corresponding positioning clamps 52. One end of the two adapter shafts 54 is fixedly connected to both sides of the upper end of the conveyor belt 2, and the other end is rotatably connected to the upper end of the upper positioning frame 51.

[0046] When carrying out the construction waste transportation operation, the positioning frame assembly 5 can be used to position the rail transport equipment 1. That is, the positioning rod 53 fixed to the rail transport equipment 1 is inserted into the positioning clamp 52 to prevent the rail transport equipment 1 from not accurately entering the space below the upper end of the conveyor belt 2, which would cause the rail transport equipment 1 to be unable to accurately receive the construction waste falling from the upper end of the conveyor belt 2.

[0047] The upper positioning frame 51 includes a crossbeam 511, two vertical rods 512 whose lower ends are fixedly connected to the upper side of the crossbeam 511, and two positioning legs 513 whose upper ends are slidably connected to the lower side of the crossbeam 511. The upper ends of the two vertical rods 512 are rotatably connected to the other ends of two adapter shafts 54, and the lower ends of the two positioning legs 513 are fixedly connected to two positioning clamps 52. A second channel for the rail transport equipment 1 to enter and exit is formed between the two positioning legs 513.

[0048] By sliding two positioning legs 513 relative to the crossbeam 511 to change the size of the second channel, the rail transport equipment 1 can smoothly enter and exit the second channel, realizing the cooperative use between rail transport equipment 1 and conveyor belt 2 of different sizes.

[0049] Based on the above embodiment, a slot is provided on the lower side of the crossbeam 511. The slot is a dovetail groove or a stepped groove, and the upper end of the positioning leg 513 is adapted to and slidably connected to the slot.

[0050] The upper positioning frame 51 also includes two adapter legs 514 and two limiting rods 515. The upper ends of the two adapter legs 514 are vertically slidably connected to the lower ends of the two positioning legs 513, and the lower ends of the two adapter legs 514 are fixedly connected to the two positioning clamps 52. The two limiting rods 515 are simultaneously inserted into the corresponding positioning legs 513 and adapter legs 514.

[0051] After adjusting the conveying angle of the conveyor belt 2 via the intermediate support component 4, the height of the positioning clamp 52 is changed by the vertical sliding of the adapter leg 514 relative to the positioning leg 513, so as to ensure that the positioning rod 53 can smoothly enter the positioning clamp 52. After the adapter leg 514 slides vertically relative to the positioning leg 513, the limiting rod 515 is inserted into the corresponding positioning leg 513 and adapter leg 514 to ensure that the overall length formed by the corresponding positioning leg 513 and adapter leg 514 remains unchanged.

[0052] Based on the above embodiment, the lower ends of both positioning legs 513 are provided with sliding holes, and the upper ends of both adapter legs 514 are adapted to and slidably connected to the corresponding sliding holes. Furthermore, the sides of both positioning legs 513 are provided with insertion holes 5131, and the sides of both adapter legs 514 are provided with multiple vertically spaced positioning holes 5141. The limiting rod 515 is simultaneously inserted into the connected insertion holes 5131 and positioning holes 5141 to ensure that the overall length formed by the corresponding positioning legs 513 and adapter legs 514 remains unchanged.

[0053] The positioning frame assembly 5 also includes a guide plate 57 located directly below the upper end of the conveyor belt 2. The guide plate 57 is inclined and its upper end is fixedly connected to the crossbeam 511 of the upper positioning frame 51, while the other end is inclined downward toward the conveyor belt 2.

[0054] The guide plate 57 guides the slag conveyed from the upper end of the conveyor belt 2 and guides the slag into the rail transport equipment 1.

[0055] Reference Figure 4 and Figure 5 Based on the above embodiment, both positioning clamps 52 are slidably connected with inclined rods 55. Both inclined rods 55 are inclined and one end is closed at the opening of the corresponding positioning clamp 52. The other end is fitted with a spring 56. Both ends of the spring 56 are fixedly connected to the other end of the corresponding positioning clamp 52 and the inclined rod 55.

[0056] When the rail transport equipment 1 is a mine car, as the rail transport equipment 1 moves toward the conveyor belt 2 and enters the access space below the conveyor belt 2, the positioning rod 53 fixed to the rail transport equipment 1 can strike the inclined bar 55. The inclined bar 55 is subjected to force that overcomes the tension of the spring 56 and slides. After the positioning rod 53 enters the positioning clamp 52, under the action of the spring 56, the inclined bar 55 slides in the opposite direction and closes at the opening of the corresponding positioning clamp 52. At this time, the inclined bar 55 prevents the positioning rod 53 from falling out of the positioning clamp 52, so as to ensure that the position of the conveyor belt 2 relative to the rail transport equipment 1 is correct during the process of receiving slag.

[0057] Of course, when the slag is full, force is applied to the other end of the inclined rod 55 to open the opening of the positioning clamp 52, which can drive the rail transport equipment 1 away.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for transporting excavated soil in a steep slope tunnel, comprising a rail-guided transport device (1) and an inclined conveyor belt (2), characterized in that: Also includes: The lower support assembly (3) is rotatably supported at the lower end of the conveyor belt (2); The middle support assembly (4) includes a middle support frame (41), a linear drive member (42) fixedly installed on the middle support frame (41) and with its telescopic end extending vertically upward, multiple vertically arranged limiting rods (43) with their lower ends fixedly connected to the middle support frame (41), a transfer frame (44) fixedly connected to the telescopic end of the linear drive member (42), and two coaxial central shafts (45). The upper ends of each limiting rod (43) are vertically slidably connected to the transfer frame (44). One end of each of the two central shafts (45) is fixedly connected to both sides of the upper end of the conveyor belt (2), and the other ends of each of the two central shafts (45) are rotatably connected to the transfer frame (44).

2. The steep slope tunnel spoil transport device according to claim 1, characterized in that: The central support assembly (4) also includes a plurality of central rollers (46), each of which is fixedly connected to the lower end of the central support frame (41).

3. The steep slope tunnel spoil transport device according to claim 1, characterized in that: The central support assembly (4) also includes a plurality of screws (47), each of which is evenly distributed at one end of the two central shafts (45) and is threadedly connected to the conveyor belt (2).

4. The steep slope tunnel spoil transport device according to claim 1, characterized in that: The lower support assembly (3) includes a lower support frame (31), two lower support clamps (32) and two lower shafts (33). The two lower support clamps (32) are fixedly connected to the upper end of the lower support frame (31). One end of the two lower shafts (33) is fixedly connected to both sides of the lower end of the conveyor belt (2), and the other end is rotatably connected to the two lower support clamps (32).

5. The steep slope tunnel spoil transport device according to claim 4, characterized in that: The lower support assembly (3) also includes a plurality of lower rollers (34), each of which is fixedly connected to the lower end of the lower support frame (31).

6. The device for transporting excavated soil in steep slope tunnels according to any one of claims 1-5, characterized in that: It also includes a positioning frame assembly (5), which includes an upper positioning frame (51), two positioning clamps (52), two positioning rods (53) and two adapter shafts (54). The two positioning clamps (52) are fixedly connected to the lower end of the upper positioning frame (51), and the two positioning clamps (52) open in the direction away from the middle support assembly (4). One end of the two positioning rods (53) is fixedly connected to both sides of the rail transport equipment (1), and the two positioning rods (53) enter the positioning clamp (52) from the opening of the corresponding positioning clamp (52). One end of the two adapter shafts (54) is fixedly connected to both sides of the upper end of the conveyor belt (2), and the other end is rotatably connected to the upper end of the upper positioning frame (51).

7. The steep slope tunnel spoil transport device according to claim 6, characterized in that: The upper positioning frame (51) includes a crossbeam (511), two vertical rods (512) whose lower ends are fixedly connected to the upper side of the crossbeam (511), and two positioning legs (513) whose upper ends are slidably connected to the lower side of the crossbeam (511). The upper ends of the two vertical rods (512) are rotatably connected to the other ends of the two adapter shafts (54), and the lower ends of the two positioning legs (513) are fixedly connected to the two positioning clamps (52). A second channel for the rail transport equipment (1) to enter and exit is formed between the two positioning legs (513).

8. The soil and waste transportation device for steep slope tunnels according to claim 7, characterized in that: The upper positioning frame (51) also includes two adapter legs (514) and two limiting rods (515). The upper ends of the two adapter legs (514) are vertically slidably connected to the lower ends of the two positioning legs (513), and the lower ends of the two adapter legs (514) are fixedly connected to the two positioning clips (52). The two limiting rods (515) are simultaneously inserted into the corresponding positioning legs (513) and adapter legs (514).

9. The soil and waste transportation device for steep slope tunnels according to claim 6, characterized in that: The positioning frame assembly (5) also includes a guide plate (57) located directly below the upper end of the conveyor belt (2). The guide plate (57) is inclined and its upper end is fixedly connected to the upper positioning frame (51), while its other end is inclined downward toward the conveyor belt (2).

10. The device for transporting excavated soil in steep slope tunnels according to claim 6, characterized in that: Both positioning clamps (52) are slidably connected to inclined rods (55). Both inclined rods (55) are inclined and one end is closed at the opening of the corresponding positioning clamp (52). The other end is fitted with a spring (56). Both ends of the spring (56) are fixedly connected to the other end of the corresponding positioning clamp (52) and the inclined rod (55).

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