A tunnel construction trolley for continuous variable cross-section

Abstract

The application relates to the technical field of tunnel construction equipment, in particular to a continuous variable cross-section tunnel construction trolley, which comprises a trolley main body, a plurality of walking wheels are connected to the trolley main body; a mounting horizontal shaft is arranged horizontally, a lifting unit is connected to the mounting horizontal shaft, the lifting unit is used for changing the distance between the mounting horizontal shaft and the trolley main body; two rotating plates are respectively arranged on the opposite sides of the mounting horizontal shaft, the rotating plates are rotationally connected with the mounting horizontal shaft, and the rotating shafts of the rotating plates are coaxially arranged with the mounting horizontal shaft; a driving unit is used for driving the rotating plates to rotate; a plurality of steps are rotationally connected with the top wall of the rotating plate at one end, and the plurality of steps form a ladder structure on the rotating plate; a supporting unit is installed on the trolley main body, the supporting unit is connected with the steps through the rotating plate, and is used for keeping the steps horizontal; the application has the effects of reducing time waste and transformation cost caused by the mismatch of the trolley when a variable cross-section tunnel is constructed.

Description

Technical Field

[0001] This application relates to the field of tunnel construction equipment technology, and in particular to a tunnel construction trolley for continuous variable cross-section. Background Technology

[0002] A tunnel is an engineering structure buried in the strata. The structure of a tunnel includes two parts: the main building and the auxiliary equipment. The main building consists of the tunnel body and the tunnel portal. The auxiliary equipment includes passing tunnels, fire-fighting facilities, emergency communication facilities, and flood control and drainage facilities. During tunnel construction, in order to facilitate construction on the inner wall of the tunnel, linear tracks need to be laid inside the tunnel, and then a trolley is used to provide a support platform for construction.

[0003] The prior art discloses a trolley for tunnel construction, which includes a frame with wheels on the frame, a track frame mounted on the frame, an I-beam steel rail mounted on the track frame, a rack mounted on the outer side of the I-beam steel rail, and a traveling trolley mounted on the I-beam steel rail. The traveling trolley includes a seat, a seat drive motor mounted on the seat, a drive gear mounted on the output shaft of the seat drive motor, the drive gear meshing with the rack, a roller shaft mounted on the seat, rollers mounted on the roller shaft, a pressure roller shaft mounted on the seat inside the I-beam steel rail, and a pressure roller mounted on the pressure roller shaft. The rollers contact the surface of the I-beam steel rail, and the pressure rollers contact the back side of the inner side of the I-beam steel rail. The construction platform is mounted on the seat via the roller shaft.

[0004] Regarding the aforementioned technologies, due to the different geological rock types, the cross-sectional dimensions of different sections of the same tunnel often vary. Therefore, it is necessary to adjust the trolley according to the tunnel cross-sectional dimensions. However, the trolleys disclosed in the existing technology are fixed structures and cannot be changed according to actual needs. Temporary structural modifications to the trolley are required based on the tunnel cross-sectional dimensions, which consumes a lot of time and modification costs. Summary of the Invention

[0005] In order to reduce the time wastage and modification costs caused by mismatch between the trolleys when constructing tunnels with variable cross-sections, this application provides a tunnel construction trolley for continuous variable cross-sections.

[0006] The technical solution for a tunnel construction trolley with continuously variable cross-section provided in this application is as follows: A tunnel construction trolley with continuous variable cross-section, including The main body of the platform is equipped with multiple traveling wheels that are adapted to the tunnel track. The mounting horizontal axis is horizontally set and a lifting unit is connected to the mounting horizontal axis. The lifting unit is connected to the main body of the platform and is used to change the distance between the mounting horizontal axis and the main body of the platform. Two rotating plates are located on opposite sides of the mounting horizontal axis, and the rotating plates are rotatably connected to the mounting horizontal axis. The rotation axis of the rotating plates is coaxial with the mounting horizontal axis. A drive unit is mounted on the rotating plate and connected to the lifting unit for driving the rotating plate to rotate. Multiple pedals, one end of each pedal being rotatably connected to the top wall of the rotating plate, and the multiple pedals forming a stepped structure on the rotating plate; A support unit is mounted on the main body of the platform and passes through the rotating plate to connect with the pedal, thereby keeping the pedal horizontal.

[0007] By employing the above technical solution, force is applied to the main body of the platform, and the traveling wheels move along the tunnel excavation direction on the tunnel track until the main body of the platform is in place. Then, force is applied to the installation horizontal axis through the lifting unit, so that the height of the installation horizontal axis is adapted to the current dimensions of the tunnel inner wall. Then, force is applied to the rotating plate through the drive unit, and the rotating plate rotates around the installation horizontal axis, simultaneously driving the pedal to rotate, until the rotating plate is in the correct position. Then, force is applied to the pedal through the support unit to keep the pedal horizontal. Then, the construction personnel can stand on the stepped platform formed by multiple pedals to carry out construction. When encountering changes in the tunnel cross section, the lifting unit can be adjusted to ensure the platform is level. The design of the continuous variable cross-section tunnel construction trolley, consisting of a lifting unit, a drive unit, and a support unit, enables adaptation to tunnels with different cross-sections. The trolley facilitates the installation of the lifting unit and wheels through the main frame, and the wheels facilitate the movement of the trolley. The lifting unit allows for changing the distance between the installation horizontal axis and the main frame, and the installation horizontal axis provides an installation shaft for the rotating plate. The rotating plate and pedal, in conjunction with the drive unit and support unit, allow for control of the unfolding angle of the two rotating plates, thereby enabling adaptation to tunnels with different interface sizes and reducing time waste and modification costs caused by trolley mismatch.

[0008] In one specific implementation scheme, the lifting unit includes Multiple fixing rods are provided, which are distributed along the axial direction of the mounting horizontal axis and are connected to the main body of the platform. Multiple sliding rods are provided, which are coaxially arranged with the fixed rod and slidably connected to the fixed rod. The end of the sliding rod away from the fixed rod is perpendicularly connected to the mounting horizontal axis. A connecting frame, which is connected to the plurality of sliding rods; Multiple lifting hydraulic cylinders are distributed along the axial direction of the mounting horizontal axis, and the lifting hydraulic cylinders are connected to the main body of the platform. The piston rod of the lifting hydraulic cylinder is connected to the connecting frame, and the piston rod of the lifting hydraulic cylinder is axially aligned with the sliding rod.

[0009] By adopting the above technical solution, the designed lifting unit can easily drive the connecting frame to rise and fall through the lifting hydraulic cylinder, can easily transmit force to multiple sliding rods simultaneously through the connecting frame, can easily control the movement direction of the sliding rods through the cooperation of the sliding rods and the fixed rods, and can easily drive the installation horizontal shaft to rise and fall through the sliding rods.

[0010] In one specific implementation, the drive unit includes Multiple driving hydraulic cylinders are distributed along the axial direction of the mounting horizontal axis, with one end of each driving hydraulic cylinder rotatably connected to the sliding rod and the other end rotatably connected to the bottom wall of the rotating plate.

[0011] By adopting the above technical solution, the designed drive unit can easily realize the rotation of the rotating plate by driving the hydraulic cylinder, thereby changing the unfolding angle between the two rotating plates and realizing the adaptation to tunnels of different widths.

[0012] In one specific implementation scheme, the support unit includes Multiple support rods are threadedly connected to the main body of the platform. The support rods pass through the rotating plate and abut against the bottom wall of the pedal. The support rods are staggered from the rotating plate. Multiple drive handles are provided, and the drive handles are connected to the end of the support rod away from the pedal.

[0013] By adopting the above technical solution, the designed support unit allows for easy application of force to the support rod via the drive handle to achieve rotation of the support rod. The support rod can be raised and lowered by rotation, and the angle of the pedal can be adjusted by contact with the bottom wall of the pedal.

[0014] In one specific implementation, multiple support springs are connected between the pedal and the rotating plate, and the contact point between the support rod and the pedal is located between the rotating end of the pedal and the support spring.

[0015] By adopting the above technical solution, the designed support spring can achieve preliminary control of the pedal angle. Furthermore, when the tilt angle of the rotating plate is too large and the force applied by the driving hydraulic cylinder is too small, the support rod, in conjunction with the support spring, can support the end of the rotating plate away from the mounting horizontal axis.

[0016] In one specific implementation, the rotating plate includes two splicing strips, which are distributed along the axial direction of the mounting horizontal axis and are rotatably connected to the mounting horizontal axis. The splicing strips are also connected to the driving unit. The pedal includes two splicing sections, which are distributed along the axial direction of the mounting horizontal axis. The splicing sections are rotatably connected to the splicing strip and connected to the support unit.

[0017] By adopting the above technical solution, when the trolley moves to the point where the tunnel cross-section changes, the angle of the two splicing strips and the splicing segment can be changed to adapt to tunnels with different cross-sectional dimensions at both ends.

[0018] In one specific implementation, multiple reinforcing ribs are connected to the bottom wall of the splicing strip, and the multiple reinforcing ribs are distributed along the axial direction of the mounting horizontal axis.

[0019] By adopting the above technical solution, the designed reinforcing ribs can improve the strength of the splicing strips.

[0020] In one specific implementation scheme, a recessed groove is provided on the top wall of the splicing section, and the recessed groove is opened along the axial direction of the installation horizontal axis.

[0021] By adopting the above technical solution, the designed sink can increase the surface friction of the splicing section, thereby improving the safety of workers standing on the splicing section.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The designed continuous variable cross-section tunnel construction trolley facilitates the installation of the lifting unit and traveling wheels through the main frame. The traveling wheels facilitate the movement of the trolley. The lifting unit facilitates the adjustment of the distance between the installation horizontal axis and the main frame. The installation horizontal axis provides an installation shaft for the rotating plate. Through the cooperation of the rotating plate and the pedal, the unfolding angle of the two rotating plates can be controlled with the cooperation of the drive unit and the support unit. This enables the trolley to adapt to tunnels with different interface sizes and reduces the time waste and modification costs caused by trolley mismatch.

[0023] 2. The designed continuous variable cross-section tunnel construction trolley uses a lifting hydraulic cylinder to easily drive the connecting frame to rise and fall, the connecting frame to easily transmit force to multiple sliding rods simultaneously, the sliding rods and fixed rods to easily control the direction of movement of the sliding rods, and the sliding rods to easily drive the installation horizontal shaft to rise and fall.

[0024] 3. The designed continuous variable cross-section tunnel construction trolley can achieve preliminary control of the pedal angle, and when the tilt angle of the rotating plate is too large and the driving hydraulic cylinder has a small force angle, the support rod and the support spring can be used to support the end of the rotating plate away from the installation horizontal axis. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main frame and traveling wheels of the tunnel construction trolley with continuous variable cross-section according to an embodiment of this application.

[0026] Figure 2 Is Figure 1 The structural diagram shows the addition of a rotating plate, a drive unit, and a pedal to the original design.

[0027] Figure 3 yes Figure 2 A three-dimensional partial schematic diagram.

[0028] Figure 4 This is a schematic diagram of the structure of a tunnel construction trolley with continuously variable cross-section according to an embodiment of this application.

[0029] Figure 5 yes Figure 4 A partial structural side view.

[0030] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. Traveling wheels; 3. Mounting horizontal shaft; 4. Lifting unit; 41. Fixed rod; 42. Sliding rod; 43. Connecting frame; 44. Lifting hydraulic cylinder; 5. Rotating plate; 51. Splicing strip; 511. Reinforcing rib; 6. Drive unit; 61. Drive hydraulic cylinder; 7. Pedal; 71. Splicing section; 711. Settlement trough; 8. Support unit; 81. Support rod; 82. Drive handle; 9. Support spring. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] This application discloses a tunnel construction trolley for continuous variable cross-section.

[0033] Reference Figure 1 A tunnel construction trolley for continuous variable cross-section includes a trolley body 1 and traveling wheels 2. There are multiple traveling wheels 2, and the traveling wheels 2 are bolted to the lower end of the trolley body 1. The multiple traveling wheels 2 are divided into two rows and are adapted to the tunnel cabinet installed in the tunnel to realize the forward and backward movement of the trolley body 1 along the tunnel opening direction. In this application, the number of traveling wheels 2 can be four, six, or eight, as long as it can realize the stable movement of the trolley body 1. In this embodiment, the number of traveling wheels 2 is six.

[0034] Reference Figure 2To facilitate the provision of an operating platform for construction personnel and to adapt to different cross-section sizes, the continuous variable cross-section tunnel construction trolley also includes a mounting horizontal shaft 3 and two rotating plates 5. The mounting horizontal shaft 3 is set horizontally and along the setting direction of the tunnel ground track. The two rotating plates 5 are located on opposite sides of the mounting horizontal shaft 3. The rotating plates 5 are rotatably connected to the mounting horizontal shaft 3, and the rotation axis of the rotating plates 5 is coaxial with that of the mounting horizontal shaft 3.

[0035] Reference Figure 2 and Figure 3 In order to facilitate the lifting and lowering of the installation horizontal axis 3 and thus adapt to tunnels of different heights, the tunnel construction trolley for continuous variable cross-section also includes a lifting unit 4. The lifting unit 4 is connected to the main body 1 of the platform and is also connected to the installation horizontal axis 3 to change the distance between the main body 1 of the platform and the installation horizontal axis 3.

[0036] Reference Figure 3 The lifting unit 4 includes a fixed rod 41, a sliding rod 42, a connecting frame 43, and a lifting hydraulic cylinder 44. In this application, there are multiple fixed rods 41, sliding rods 42, and lifting hydraulic cylinders 44. Multiple fixed rods 41 are distributed along the axial direction of the mounting horizontal axis 3. The fixed rods 41 are vertically arranged and welded to the main body 1 of the platform. The sliding rods 42 are coaxially arranged with the fixed rods 41 and are slidably connected to the fixed rods 41. The end of the sliding rod 42 away from the fixed rods 41 is welded perpendicularly to the mounting horizontal axis 3. In this application, the number of fixed rods 41, sliding rods 42, and lifting hydraulic cylinders 44 can be three, four, or five, as long as reliable lifting of the mounting horizontal axis 3 can be achieved. In this embodiment, there are five fixed rods 41 and five sliding rods 42, and four lifting hydraulic cylinders 44.

[0037] Reference Figure 3 The connecting frame 43 is simultaneously welded and fixed to multiple sliding rods 42. The lifting hydraulic cylinder 44 is distributed along the axial direction of the mounting horizontal shaft 3, and the cylinder body of the lifting hydraulic cylinder 44 is bolted to the main body 1 of the platform. The piston rod of the lifting hydraulic cylinder 44 is bolted to the connecting frame 43, and the axial direction of the piston rod of the lifting hydraulic cylinder 44 is consistent with the axial direction of the sliding rod 42. The piston rod of the lifting hydraulic cylinder 44 extends and applies force to the connecting frame 43. The connecting frame 43 simultaneously applies external force to multiple sliding rods 42, causing the sliding rods 42 to slide relative to the fixed rod 41. While the sliding rods 42 slide, they drive the mounting horizontal shaft 3 to rise and fall, thus completing the adjustment of the height of the mounting horizontal shaft 3 from the ground.

[0038] Reference Figure 2 and Figure 3To facilitate the rotation of the rotating plate 5 and thus change the included angle between the two rotating plates 5 to adapt to different tunnel cross-sections, the tunnel construction trolley for continuous variable cross-sections also includes a drive unit 6. The drive unit 6 is mounted on the rotating plate 5 and connected to the sliding rod 42 for driving the rotating plate 5 to rotate. The drive unit 6 includes multiple drive hydraulic cylinders 61, which are distributed along the axial direction of the mounting horizontal axis 3. The cylinder body of the drive hydraulic cylinder 61 is rotatably connected to the sliding rod 42, and the piston rod of the drive hydraulic cylinder 61 is rotatably connected to the bottom wall of the rotating plate 5. In this application, the number of drive hydraulic cylinders 61 can be four, six, or eight, as long as it can reliably rotate the rotating plate 5. In this embodiment, the number of drive hydraulic cylinders 61 is four.

[0039] Reference Figure 4 To facilitate the formation of a standing position, the continuous variable cross-section tunnel construction trolley also includes multiple pedals 7 and support units 8. One end of the pedal 7 is rotatably connected to the top wall of the rotating plate 5, and the multiple pedals 7 form a stepped structure on the rotating plate 5. The support unit 8 is installed on the main body 1 of the platform, and the support unit 8 passes through the rotating plate 5 and is connected to the pedal 7 to keep the pedal 7 horizontal.

[0040] Reference Figure 4 The support unit 8 includes multiple support rods 81 and multiple drive handles 82. In this application, the number of support rods 81 and drive handles 82 is the same. The support rods 81 are threaded to the main body 1 of the frame. A strip groove is provided on the rotating plate 5. The strip groove is opened radially along the mounting horizontal axis 3. The support rods 81 pass through the strip groove and abut against the bottom wall of the pedal 7. The support rods 81 are staggered from the rotating plate 5. The drive handles 82 are welded and fixed to the end of the support rods 81 away from the pedal 7. By turning the drive handles 82, the support rods 81 are driven to rotate, thereby changing the height of the support rods 81 to support the pedal 7.

[0041] Reference Figure 4 and Figure 5 To ensure reliable support for the rotating plate 5 when the applied force angle of the driving hydraulic cylinder 61 is small, multiple support springs 9 are welded and fixed between the pedal 7 and the rotating plate 5. The contact point between the support rod 81 and the pedal 7 is located between the rotating end of the pedal 7 and the support springs 9. In this application, the number of support springs 9 between each pedal 7 and the rotating plate 5 can be two, three, or four, as long as they can apply an upward force to the rotating plate 5. In this embodiment, the number of support springs 9 between each pedal 7 and the rotating plate 5 is two.

[0042] Reference Figure 4 and Figure 5In order to adapt to tunnels with different cross-sectional dimensions at both ends by changing the angle of the two splicing strips 51 and splicing sections 71 when the trolley moves to the section where the tunnel cross-section changes, the rotating plate 5 includes two splicing strips 51. The two splicing strips 51 are distributed along the axial direction of the mounting horizontal axis 3 and are rotatably connected to the mounting horizontal axis 3. The splicing strips 51 are also rotatably connected to the driving hydraulic cylinder 61. The pedal 7 includes two splicing sections 71. The two splicing sections 71 are distributed along the axial direction of the mounting horizontal axis 3 and are rotatably connected to the splicing strips 51. The splicing sections 71 are welded to the support spring 9 and abut against the support rod 81.

[0043] Reference Figure 4 and Figure 5 To improve the strength of the splicing strip 51, multiple reinforcing ribs 511 are welded and fixed on the bottom wall of the splicing strip 51. The multiple reinforcing ribs 511 are distributed along the axial direction of the mounting horizontal axis 3. In this application, the number of reinforcing ribs 511 on each splicing strip 51 can be two, three, or four, as long as it can improve the strength of the splicing strip 51. In this embodiment, the number of reinforcing ribs 511 on the splicing strip 51 is two.

[0044] Reference Figure 4 In order to increase the anti-slip performance of the splicing section 71, a groove 711 is provided on the top wall of the splicing section 71, and the groove 711 is opened along the axial direction of the installation horizontal axis 3.

[0045] The implementation principle of a tunnel construction trolley with a continuous variable cross-section according to an embodiment of this application is as follows: Force is applied to the main body 1 of the trolley, and the traveling wheels 2 travel along the tunnel excavation direction on the tunnel ground track until the main body 1 of the trolley moves into place. Then, force is applied to the mounting horizontal axis 3 through the lifting unit 4 so that the height of the mounting horizontal axis 3 is adapted to the current size of the tunnel inner wall. Then, force is applied to the rotating plate 5 through the drive unit 6, and the rotating plate 5 rotates around the mounting horizontal axis 3, while simultaneously driving the pedal 7 to rotate until the position of the rotating plate 5 is appropriate. Then, force is applied to the pedal 7 through the support unit 8 so that the pedal 7 is kept horizontal. Then, the construction personnel can stand on the stepped platform formed by multiple pedals 7 to carry out construction. When the tunnel cross-section changes, the lifting unit 4, drive unit 6 and support unit 8 can be adjusted to adapt to tunnels with different cross-sections.

[0046] 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 tunnel construction trolley for continuous variable cross-section, characterized in that: include The main body of the platform (1) is connected to a plurality of traveling wheels (2) for adapting to the tunnel track; A horizontal mounting shaft (3) is installed, which is set horizontally and is connected to a lifting unit (4). The lifting unit (4) is connected to the main body of the platform (1) and is used to change the distance between the horizontal mounting shaft (3) and the main body of the platform (1). Two rotating plates (5) are located on opposite sides of the mounting horizontal shaft (3), and the rotating plates (5) are rotatably connected to the mounting horizontal shaft (3). The rotation axis of the rotating plates (5) is coaxial with the mounting horizontal shaft (3). A drive unit (6) is mounted on the rotating plate (5) and connected to the lifting unit (4) for driving the rotating plate (5) to rotate. Multiple pedals (7), one end of each pedal (7) is rotatably connected to the top wall of the rotating plate (5), and the multiple pedals (7) form a stepped structure on the rotating plate (5); A support unit (8) is mounted on the main body of the platform (1) and the support unit (8) passes through the rotating plate (5) and is connected to the pedal (7) to keep the pedal (7) horizontal. The lifting unit (4) includes multiple fixed rods (41) distributed along the axial direction of the mounting horizontal axis (3) and connected to the platform body (1); and multiple sliding rods (42) coaxially arranged with the fixed rods (41) and slidably connected to the fixed rods (41), with one end of the sliding rod (42) away from the fixed rod (41) connected to the mounting horizontal axis (3). Vertical connection; connecting frame (43), the connecting frame (43) being connected to multiple sliding rods (42); multiple lifting hydraulic cylinders (44), the multiple lifting hydraulic cylinders (44) being distributed along the axial direction of the mounting horizontal axis (3), and the lifting hydraulic cylinders (44) being connected to the main body of the platform (1), the piston rod of the lifting hydraulic cylinder (44) being connected to the connecting frame (43), and the piston rod of the lifting hydraulic cylinder (44) being axially aligned with the sliding rods (42); The drive unit (6) includes a plurality of drive hydraulic cylinders (61), which are distributed along the axial direction of the mounting horizontal shaft (3). One end of each drive hydraulic cylinder (61) is rotatably connected to the sliding rod (42), and the other end is rotatably connected to the bottom wall of the rotating plate (5). The support unit (8) includes multiple support rods (81), which are threadedly connected to the main body (1) of the platform. The support rods (81) pass through the rotating plate (5) and abut against the bottom wall of the pedal (7), and the support rods (81) and the rotating plate (5) are staggered. Multiple drive handles (82) are connected to the end of the support rods (81) away from the pedal (7).

2. The tunnel construction trolley for continuous variable cross-section according to claim 1, characterized in that: Multiple support springs (9) are connected between the pedal (7) and the rotating plate (5). The contact point between the support rod (81) and the pedal (7) is located between the rotating end of the pedal (7) and the support spring (9).

3. The tunnel construction trolley for continuous variable cross-section according to any one of claims 1-2, characterized in that: The rotating plate (5) includes two splicing strips (51), which are distributed along the axial direction of the mounting horizontal axis (3) and are rotatably connected to the mounting horizontal axis (3). The splicing strips (51) are connected to the driving unit (6). The pedal (7) includes two splicing segments (71), which are distributed along the axial direction of the mounting horizontal axis (3) and are rotatably connected to the splicing strips (51). The splicing segments (71) are connected to the support unit (8).

4. The tunnel construction trolley for continuous variable cross-section according to claim 3, characterized in that: Multiple reinforcing ribs (511) are connected to the bottom wall of the splicing strip (51), and the multiple reinforcing ribs (511) are distributed along the axial direction of the mounting horizontal axis (3).

5. The tunnel construction trolley for continuous variable cross-section according to claim 3, characterized in that: A recessed groove (711) is provided on the top wall of the splicing section (71), and the recessed groove (711) is opened along the axial direction of the mounting horizontal axis (3).

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