A tunnel maintenance system

Abstract

The present invention relates to a tunnel maintenance system, which relates to the technical field of tunnel maintenance. It is used to solve the problem in the prior art that the working space of the working platform on the working vehicle is narrow, and when the tunnel fan is replaced, the normal driving of vehicles in the left and right lanes in the tunnel will be affected during the construction process; the system comprises: a carrier vehicle, a linear guide rail, an extension platform, a horizontal drive mechanism and a hoisting mechanism; the carrier vehicle is provided with a lifting platform; the linear guide rail comprises a transverse guide rail and a longitudinal guide rail; the extension platform comprises a first platform, a second platform and a third platform, the first platform and the longitudinal guide rail are slidably matched, and the second platform and the third platform are both slidably matched with the transverse guide rail; the horizontal drive mechanism drives the first platform to move along the longitudinal guide rail, and the horizontal drive mechanism drives the second platform and the third platform to move along the transverse guide rail; the hoisting mechanism is rotatably arranged on the carrier vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel maintenance, and in particular to a tunnel maintenance system. Background Art

[0002] With the rapid development of the domestic transportation industry, the number of tunnels has increased year by year. The ancillary facilities in old tunnels need regular maintenance and replacement. For example, as the tunnel's operating years increase, the fan's service life decreases year by year, and the ventilation efficiency will not meet the requirements, requiring more regular maintenance and replacement. During the tunnel maintenance process, it is necessary to inspect and repair the equipment on the tunnel arch bottom, arch waist, arch spandrel and arch crown, as well as the tunnel support structure. If an operating platform is built in the tunnel, the construction platform is very inconvenient to set up and move, and the efficiency is low. The construction process is likely to affect the normal driving of vehicles in the tunnel. Work vehicles with lifting platforms are often used in tunnel maintenance because they are more flexible and have high construction efficiency.

[0003] However, the work platform carried by the work vehicle in the existing technology is often restricted by the vehicle body, resulting in a small working space for the work platform, which is not conducive to construction workers. At the same time, since the tunnel fan is often located on the arch directly above the tunnel, the work vehicle needs to be moved to the center of the tunnel to replace the tunnel fan, which will affect the normal driving of vehicles in the left and right lanes in the tunnel during the construction process. Summary of the Invention

[0004] In response to the defects in the existing technology, the present invention provides a tunnel maintenance system for solving the problem that the working space of the working platform carried by the work vehicle in the existing technology is narrow, and when the tunnel fan is replaced, the normal driving of vehicles in the left and right lanes in the tunnel will be affected during the construction process.

[0005] In order to achieve the above-mentioned object, the present invention provides a tunnel maintenance system, comprising:

[0006] Carrier, linear guide, extension platform, horizontal drive mechanism and lifting mechanism.

[0007] The carrier vehicle is provided with a lifting platform, and the lifting and lowering of the lifting platform is controlled by a lifting mechanism; the linear guide rail includes a transverse guide rail and a longitudinal guide rail, and the transverse guide rail and the longitudinal guide rail are fixedly connected to the lifting platform, the transverse guide rail and the longitudinal guide rail are perpendicular to each other, and the longitudinal guide rail is arranged along the length direction of the vehicle body; the extension platform includes a first platform, a second platform and a third platform, the first platform and the longitudinal guide rail are slidably matched, and the second platform and the third platform are slidably matched with the transverse guide rail; the horizontal drive mechanism drives the first platform to move along the longitudinal guide rail, and the horizontal drive mechanism drives the second platform and the third platform to move along the transverse guide rail; the lifting mechanism is rotatably arranged on the carrier vehicle.

[0008] The lifting mechanism controls the lifting platform on the transport vehicle. The first platform extends along the longitudinal guide rails, while the second and third platforms extend along the transverse guide rails. This expands the overall working space. When replacing a tunnel fan, the transport vehicle only needs to be in the right lane. Since the second platform extends to the left of the transport vehicle, it can reach the middle of the tunnel to replace the fan, eliminating the need to occupy the left lane. The second and third platforms not only expand the working space, but also allow for arbitrary adjustment of the working height, driven by the lifting mechanism. This facilitates the inspection and maintenance of equipment on the tunnel arch base, haunches, spandrels, and crown, as well as the tunnel support structure. The transport vehicle is equipped with a lifting device to assist in the handling of objects, for example, lifting a new fan onto the lifting platform or transporting an old fan from the lifting platform to another location.

[0009] Optionally, the lifting mechanism includes a lifting frame, a first drive assembly, and a second drive assembly, wherein the first drive assembly controls the vertical lifting of the lifting frame on the carrier vehicle, and the second drive assembly controls the vertical lifting of the lifting platform on the lifting frame. The provision of the first and second drive assemblies increases the travel of the lifting platform.

[0010] Optionally, the first drive assembly includes a telescopic lifting member and a guide column. The telescopic lifting member is fixedly mounted on the carrier, the telescopic end of the telescopic lifting member is fixedly connected to the lifting frame, one end of the guide column is fixedly mounted on the carrier, the guide column is vertically arranged, and a plurality of the guide columns respectively slide in conjunction with the vertical columns of the lifting frame. The telescopic lifting member is disposed within the guide column to save space. The telescopic lifting member controls the vertical lifting of the lifting frame along the guide column, ensuring that the lifting frame does not shake during the lifting process and can achieve smooth lifting. The telescopic lifting member can be a single-stage or multi-stage hydraulic cylinder.

[0011] Optionally, the second drive assembly includes a first rotary drive member, a driving gear, a rack and a guide rod, the guide rod is fixedly connected to the lifting frame, the lifting platform and the guide rod are slidably matched, the rack is fixedly connected to the lifting frame, the rack and the guide rod are arc-shaped and parallel, the first rotary drive member is fixedly connected to the lifting platform, and the first rotary drive member can be a hydraulic motor or an electric motor; the driving gear and the output end of the first rotary drive member are coaxially fixedly connected, and the driving gear and the rack are meshed with each other.

[0012] The driving gear is driven to rotate by the first rotating drive member. Since the driving gear is engaged with the rack, the driving gear will perform linear motion along the rack during rotation. At least two sets of the second driving components are provided on the lifting platform.

[0013] Optionally, the horizontal driving mechanism includes a first telescopic member, a second telescopic member and a third telescopic member; the first telescopic member, the second telescopic member and the third telescopic member can be cylinders, hydraulic cylinders or electric push rods.

[0014] The first telescopic member, the second telescopic member, and the third telescopic member are all fixedly mounted on the lifting platform, wherein the first telescopic member is parallel to the longitudinal guide rail, the second telescopic member and the third telescopic member are both parallel to the transverse guide rail, the first platform is fixedly connected to the movable end of the first telescopic member, the second platform is fixedly connected to the movable end of the second telescopic member, and the third platform is fixedly connected to the movable end of the third telescopic member. The first telescopic member drives the first platform to widen the working space behind the transport vehicle, the second telescopic member drives the second platform to widen the working space to the left side of the transport vehicle, and the third telescopic member drives the third platform to widen the working space to the right side of the transport vehicle. The working space can be widened in the direction of extension according to actual needs.

[0015] Optionally, the horizontal drive mechanism includes a second rotation drive member, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, a fifth bevel gear, a first screw rod, a second screw rod and a third screw rod.

[0016] The second rotation driving member is fixedly connected to the lifting platform, and the second rotation driving member can be a hydraulic motor or an electric motor; the fourth bevel gear and the second rotation driving member are coaxially fixedly connected, the fifth bevel gear and the lifting platform are rotatably connected, the first screw rod and the first bevel gear are coaxially fixedly connected, the second screw rod and the second bevel gear are coaxially fixedly connected, the third screw rod and the third bevel gear are coaxially fixedly connected, the first screw rod, the second screw rod, and the third screw rod are all rotatably connected to the lifting platform, the first screw rod and the first platform are threaded together, the second screw rod and the second platform are threaded together, the third screw rod and the third platform are threaded together, the first bevel gear, the second bevel gear, the third bevel gear and the fourth bevel gear are all meshed with the fifth bevel gear.

[0017] The fourth bevel gear is driven to rotate by the second rotating drive member, the fourth bevel gear drives the fifth bevel gear to rotate, the fifth bevel gear drives the first bevel gear, the second bevel gear, and the third bevel gear to rotate, the first bevel gear drives the first screw to rotate, and during the rotation of the first screw, the first platform is driven to move along the transverse slot, the second bevel gear drives the second screw to rotate, and during the rotation of the second screw, the second platform is driven to move along the longitudinal slot, the third bevel gear drives the third screw to rotate, and during the rotation of the third screw, the third platform is driven to move along the longitudinal slot. Using only one power source, the three platforms can be driven to move in three directions simultaneously, and the three platforms can be extended synchronously with good coordination.

[0018] Optionally, the lifting mechanism includes a rotating base, a vertical telescopic arm, an extension arm, a folding telescopic rod and a lifting assembly.

[0019] The rotating base is fixedly connected to the carrier vehicle and is equipped with a slewing bearing, driven by a hydraulic motor. The vertical telescopic arm is fixedly connected to the rotating base. The extension arm is hinged to the movable end of the vertical telescopic arm. The folding telescopic rod is hinged to the vertical telescopic arm, and the other end of the folding telescopic rod is hinged to the extension arm. The folding telescopic rod can be a hydraulic cylinder or an electric push rod. The lifting assembly is mounted on the free end of the extension arm. Because the extension arm is hinged to the vertical telescopic arm, the folding telescopic rod allows the extension arm and the vertical telescopic arm to be folded together, facilitating transportation and saving space.

[0020] Optionally, the vertical telescopic arm and the extension arm are both provided with a single-stage or multi-stage hydraulic cylinder, and the vertical telescopic arm and the extension arm are driven to extend and retract by the hydraulic cylinder.

[0021] Optionally, the tunnel inspection system further comprises a mobile lifting frame, which comprises a support frame, a vertical guide rail, a placement frame, a vertical telescopic member, a pulley, a traction rope and casters.

[0022] The vertical guide rail is fixed on the support frame, and the placement frame and the vertical guide rail are slidably matched; the telescopic member and the support frame are fixedly connected, and the telescopic member and the guide rail are arranged in parallel; the pulley is rotatably arranged at the telescopic end of the telescopic member, one end of the traction rope is fixed to the bottom of the support frame, the traction rope passes around the pulley, and the other end of the traction rope is fixed to the placement frame, and a plurality of casters are provided at the bottom of the support frame.

[0023] The vertical telescopic member pushes the pulley to move vertically. The traction rope, fixedly connected to the support frame at one end, cannot move. When the pulley moves, the other end of the traction rope moves in the direction of the pulley's movement. The movable end of the traction rope moves twice the distance the pulley moves. The placement frame slides along the guide rail under the traction of the traction rope, and the sliding distance of the placement frame is also twice the distance the pulley moves. The pulley structure increases the travel of the placement frame. When replacing heavy facilities at the top of the tunnel, such as replacing a fan, the placement frame is raised to the top of the mobile lifting frame and moved below the fan to be replaced. The fan is removed and placed on the placement frame. The placement frame is then slowly lowered to the operating table, removed and replaced with a new fan. The new fan is then raised to the position where the new fan is to be replaced. This process avoids manual handling of the fan, making the replacement process safer and more efficient.

[0024] Optionally, the tunnel maintenance system further comprises a detachable carriage comprising a vertical chute and a plurality of panels. The vertical chute is vertically fixed to the body of the transport vehicle, and the panels slideably engage with the vertical chute. The lifting platform can be retracted into the detachable carriage. During operation, the panels can be removed using a lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of the three-dimensional structure of a tunnel maintenance system according to an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of the hoisting mechanism in the tunnel maintenance system according to an embodiment of the present invention when the hoisting mechanism is in a folded state;

[0027] FIG3 is an embodiment of the present invention Figure 2 Enlarged view of the part A in the middle;

[0028] Figure 4A schematic diagram of the three-dimensional structure of the horizontal drive mechanism in a tunnel maintenance system according to an embodiment of the present invention;

[0029] FIG5 is an embodiment of the present invention Figure 4 An enlarged view of part B;

[0030] Figure 6 A schematic diagram of the three-dimensional structure of the mobile lifting frame in the tunnel maintenance system according to an embodiment of the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the first drive component in the tunnel maintenance system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that these specific details are not necessarily required to practice the present invention. In other instances, well-known circuits, software, or methods are not specifically described to avoid obscuring the present invention.

[0033] Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present invention. Therefore, appearances of the phrases "in one embodiment," "in an embodiment," "an example," or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combinations and / or subcombinations in one or more embodiments or examples. Furthermore, those of ordinary skill in the art will appreciate that the figures provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0034] See also Figure 1-Figure 7 The present invention provides an embodiment of a tunnel maintenance system, comprising: a carrier vehicle 1, a linear guide rail, an extension platform 6, a horizontal drive mechanism 7 and a hoisting mechanism.

[0035] The carrier vehicle 1 is provided with a lifting platform 3, and the lifting and lowering of the lifting platform 3 is controlled by a lifting mechanism 2; the linear guide rail includes a transverse guide rail and a longitudinal guide rail, and the transverse guide rail and the longitudinal guide rail are fixedly connected to the lifting platform 3, the transverse guide rail and the longitudinal guide rail are perpendicular to each other, and the longitudinal guide rail is arranged along the length direction of the vehicle body of the carrier vehicle 1; the extension platform 6 includes a first platform 601, a second platform 602 and a third platform 603, the first platform 601 slides with the longitudinal guide rail, and the second platform 602 and the third platform 603 slide with the transverse guide rail; the horizontal drive mechanism 7 drives the first platform 601 to move along the longitudinal guide rail, and the horizontal drive mechanism 7 drives the second platform 602 and the third platform 603 to move along the transverse guide rail; the lifting mechanism is rotatably set on the carrier vehicle 1, and support legs 101 are set on both sides of the carrier to enhance the stability of the vehicle body during operation.

[0036] The lifting mechanism 2 controls the lifting platform 3 on the transport vehicle 1. The first platform 601 extends along the longitudinal guide rails, extending from the edge of the lifting platform 3. The second platform 602 and the third platform 603 extend along the transverse guide rails, extending from the edge of the lifting platform 3. This expands the overall working space. When replacing a wind turbine 10 in the tunnel, the transport vehicle 1 only needs to be in the right lane. Since the second platform 602 extends to the left of the transport vehicle 1, it can reach the middle of the tunnel to replace the wind turbine 10, eliminating the need to occupy the left lane. The second platform 602 and the third platform 603 not only expand the working space, but also allow the lifting mechanism 2 to adjust the working height at will, facilitating the inspection and maintenance of equipment on the tunnel arch base, arch haunches, spandrels, and arch crowns, as well as the tunnel support structure. The transport vehicle 1 is equipped with a lifting device, which can assist in the handling of objects, for example, lifting a new wind turbine 10 onto the lifting platform 3 or transporting an old wind turbine on the lifting platform 3 to another location.

[0037] In this embodiment, please refer to Figure 1 and Figure 2 The lifting mechanism 2 includes a lifting frame 201, a first drive assembly, and a second drive assembly. The first drive assembly controls the vertical lifting of the lifting frame 201 on the carrier 1, while the second drive assembly controls the vertical lifting of the lifting platform 3 on the lifting frame 201. The first and second drive assemblies increase the travel of the lifting platform 3.

[0038] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 7The first drive assembly includes a telescopic lifting member 2023 and a guide column 2022. The telescopic lifting member 2023 is fixedly mounted on the carrier 1. The telescopic end of the telescopic lifting member 2023 is fixedly connected to the lifting frame 201. One end of the guide column 2022 is fixedly mounted on the carrier 1. The guide column 2022 is vertically arranged. Several guide columns 2022 are respectively slidably matched with the columns of the lifting frame 201. The telescopic lifting member 2023 is arranged inside the guide column 2022 to save space. The telescopic lifting member 2023 controls the vertical lifting of the lifting frame 201 along the guide column 2022, ensuring that the lifting frame 201 does not shake during the lifting process and can achieve smooth lifting. The telescopic lifting member 2023 can be a single-stage or multi-stage hydraulic cylinder.

[0039] In this embodiment, please refer to Figure 1-Figure 3 The second driving assembly includes a first rotary driving member 2031, a driving gear 2032, a rack 2033 and a guide rod 2034, the guide rod 2034 is fixedly connected to the lifting frame 201, the lifting platform 3 and the guide rod 2034 are slidably matched, the rack 2033 is fixedly connected to the lifting frame 201, the rack 2033 and the guide rod 2034 are arc-shaped and parallel, the first rotary driving member 2031 is fixedly connected to the lifting platform 3, and the first rotary driving member 2031 can be a hydraulic motor or an electric motor; the driving gear 2032 and the output end of the first rotary driving member 2031 are coaxially fixedly connected, and the driving gear 2032 and the rack 2033 are meshed with each other.

[0040] The driving gear 2032 is driven to rotate by the first rotating driving member 2031. Since the driving gear 2032 is engaged with the rack 2033, the driving gear 2032 will perform linear motion along the rack 2033 during rotation. At least two sets of the second driving components are provided on the lifting platform 3.

[0041] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 4 The horizontal driving mechanism 7 includes a first telescopic member, a second telescopic member and a third telescopic member; the first telescopic member, the second telescopic member and the third telescopic member can be a cylinder, a hydraulic cylinder or an electric push rod.

[0042] The first telescopic member, the second telescopic member and the third telescopic member are all fixedly mounted on the lifting platform 3, wherein the first telescopic member is parallel to the longitudinal guide rail, the second telescopic member and the third telescopic member are both parallel to the transverse guide rail, the first platform 601 is fixedly connected to the movable end of the first telescopic member, the second platform 602 is fixedly connected to the movable end of the second telescopic member, and the third platform 603 is fixedly connected to the movable end of the third telescopic member. The first telescopic member drives the first platform 601 to widen the working space toward the rear of the transport vehicle 1, the second telescopic member drives the second platform 602 to widen the working space toward the left side of the transport vehicle 1, and the third telescopic member drives the third platform 603 to widen the working space toward the right side of the transport vehicle 1. The working space can be widened in the direction of extension according to actual needs.

[0043] In this embodiment, please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The horizontal drive mechanism 7 includes a second rotary drive member 701, a first bevel gear 704, a second bevel gear 705, a third bevel gear 706, a fourth bevel gear 702, a fifth bevel gear 703, a first screw rod 707, a second screw rod 708 and a third screw rod 709.

[0044] The second rotary drive member 701 is fixedly connected to the lifting platform 3, and the second rotary drive member 701 can be a hydraulic motor or an electric motor; the fourth bevel gear 702 and the second rotary drive member 701 are coaxially fixedly connected, the fifth bevel gear 703 is rotatably connected to the lifting platform 3, the first screw rod 707 and the first bevel gear 704 are coaxially fixedly connected, the second screw rod 708 and the second bevel gear 705 are coaxially fixedly connected, the third screw rod 709 and the third bevel gear 706 are coaxially fixedly connected, the first screw rod 707, the second screw rod 708, and the third screw rod 709 are all rotatably connected to the lifting platform 3, the first screw rod 707 is threadedly matched with the first platform 601, the second screw rod 708 is threadedly matched with the second platform 602, and the third screw rod 709 is threadedly matched with the third platform 603. The first bevel gear 704, the second bevel gear 705, the third bevel gear 706 and the fourth bevel gear 702 are all engaged with the fifth bevel gear 703.

[0045] The fourth bevel gear 702 is driven to rotate by the second rotating drive member 701, and the fourth bevel gear 702 drives the fifth bevel gear 703 to rotate. The fifth bevel gear 703 drives the first bevel gear 704, the second bevel gear 705, and the third bevel gear 706 to rotate. The first bevel gear 704 drives the first screw rod 707 to rotate. During the rotation of the first screw rod 707, the first platform 601 is driven to move along the transverse chute. The second bevel gear 705 drives the second screw rod 708 to rotate. During the rotation of the second screw rod 708, the second platform 602 is driven to move along the longitudinal chute. The third bevel gear 706 drives the third screw rod 709 to rotate. During the rotation of the third screw rod 709, the third platform 603 is driven to move along the longitudinal chute. Using only one power source, the three platforms can be driven to move in three directions at the same time, and the three platforms are extended synchronously with good coordination.

[0046] In this embodiment, please refer to Figure 1-Figure 2 The lifting mechanism includes a rotating base 801, a vertical telescopic arm 802, an extension arm 804, a folding telescopic rod 803 and a lifting assembly 805.

[0047] The rotating base 801 is fixedly connected to the carrier 1. A slewing support bearing is provided on the rotating base 801, which is driven to rotate by a hydraulic motor. The vertical telescopic arm 802 is fixedly connected to the rotating base 801. The extension arm 804 is hinged to the movable end of the vertical telescopic arm 802. The folding telescopic rod 803 is hinged to the vertical telescopic arm 802. The other end of the folding telescopic rod 803 is hinged to the extension arm 804. The folding telescopic rod 803 can be a hydraulic cylinder or an electric push rod. The lifting assembly 805 is installed at the free end of the extension arm 804. The lifting assembly 805 can be a lifting hoist. Since the extension arm 804 is hinged to the vertical telescopic arm 802, the extension arm 804 and the vertical telescopic arm 802 can be folded together through the folding telescopic rod 803, which is convenient for transportation and saves space.

[0048] In this embodiment, please refer to Figure 1 and Figure 2 The vertical telescopic arm 802 and the extension arm 804 are both equipped with single-stage or multi-stage hydraulic cylinders, which drive the vertical telescopic arm 802 and the extension arm 804 to extend and retract.

[0049] In this embodiment, please refer to Figure 1 、 Figure 2 and Figure 6The tunnel maintenance system also includes a mobile lifting frame 5, which includes a support frame 503, a vertical guide rail 504, a placement frame 501, a vertical telescopic member 502, a pulley 505, a traction rope 506 and a caster 507.

[0050] The vertical guide rail 504 is fixed on the support frame 503, and the placement frame 501 and the vertical guide rail 504 are slidably matched; the telescopic member and the support frame 503 are fixedly connected, and the telescopic member and the guide rail are arranged in parallel; the pulley 505 is rotatably set at the telescopic end of the telescopic member, and one end of the traction rope 506 is fixed to the bottom of the support frame 503, and the traction rope 506 passes around the pulley 505, and the other end of the traction rope 506 is fixed to the placement frame 501, and a plurality of casters 507 are provided at the bottom of the support frame 503.

[0051] The vertical telescopic member 502 pushes the pulley 505 to move in the vertical direction. The traction rope 506 cannot move because one end is fixedly connected to the support frame 503. When the pulley 505 moves, the other end of the traction rope 506 moves along the movement direction of the pulley 505. Moreover, the distance moved by the movable end of the traction rope 506 is twice the distance moved by the pulley 505. The placement rack 501 slides along the guide rail under the traction of the traction rope 506. The sliding distance of the placement rack 501 is also twice the distance moved by the pulley 505. The pulley 505 structure is used to increase the travel of the placement rack 501. When replacing heavier facilities on the top of the tunnel, such as replacing a fan, the placement rack 501 is raised to the top of the mobile lifting rack 5, and the mobile lifting rack 5 is moved to the bottom of the fan to be replaced. The fan is removed and placed on the placement rack 501, and then the placement rack 501 is slowly lowered to the operating table, and it is removed and replaced with a new fan, and then the new fan is raised to the position where the fan needs to be replaced, and then the new fan is replaced. The replacement process avoids manual handling of the fan, which is safer and more efficient.

[0052] In this embodiment, please refer to Figure 1 and Figure 2 The tunnel maintenance system further includes a detachable carriage 9, which includes a vertical chute 901 and several panels 902. The vertical chute 901 is vertically fixed to the body of the transport vehicle 1, and the panels 902 slideably engage with the vertical chute 901. The lifting platform 3 can be retracted into the detachable carriage 9. During operation, the panels 902 can be removed using the lifting mechanism.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A tunnel maintenance system, characterized in that: include: Carrier, The carrier vehicle is provided with a lifting platform, and the lifting and lowering of the lifting platform is controlled by a lifting mechanism; linear guides, The linear guide rail includes a transverse guide rail and a longitudinal guide rail, the transverse guide rail and the longitudinal guide rail are both fixedly connected to the lifting platform, the transverse guide rail and the longitudinal guide rail are perpendicular to each other, and the longitudinal guide rail is arranged along the length direction of the vehicle body; Extended platform, The extension platform includes a first platform, a second platform and a third platform, the first platform is in sliding cooperation with the longitudinal guide rail, and the second platform and the third platform are both in sliding cooperation with the transverse guide rail; Horizontal drive mechanism, The horizontal driving mechanism drives the first platform to move along the longitudinal guide rail, and the horizontal driving mechanism drives the second platform and the third platform to move along the transverse guide rail; Lifting mechanism, The hoisting mechanism is rotatably mounted on the carrier vehicle; The horizontal drive mechanism includes a second rotary drive member, a first bevel gear, a second bevel gear, a third bevel gear, a fourth bevel gear, a fifth bevel gear, a first screw rod, a second screw rod and a third screw rod; The second rotating drive member is fixedly connected to the lifting platform, the fourth bevel gear is coaxially fixedly connected to the output end of the second rotating drive member, the fifth bevel gear is rotatably connected to the lifting platform, the first screw rod and the first bevel gear are coaxially fixedly connected, the second screw rod and the second bevel gear are coaxially fixedly connected, the third screw rod and the third bevel gear are coaxially fixedly connected, the first screw rod, the second screw rod and the third screw rod are all rotatably connected to the lifting platform, the first screw rod and the first platform are threadedly matched, the second screw rod and the second platform are threadedly matched, the third screw rod and the third platform are threadedly matched, the first bevel gear, the second bevel gear, the third bevel gear and the fourth bevel gear are all meshed with the fifth bevel gear.

2. The tunnel maintenance system according to claim 1, characterized in that: The lifting mechanism includes a lifting frame, a first drive assembly and a second drive assembly. The first drive assembly controls the lifting frame to vertically rise and fall on the carrier vehicle, and the second drive assembly controls the lifting platform to vertically rise and fall on the lifting frame.

3. The tunnel maintenance system according to claim 2, characterized in that: The first driving assembly includes a lifting and telescopic part and a guide column. The lifting and telescopic part is fixedly installed on the carrier. The telescopic end of the lifting and telescopic part is fixedly connected to the lifting frame. One end of the guide column is fixedly installed on the carrier. The guide column is vertically arranged. Several guide columns are respectively slidably matched with the columns of the lifting frame. The lifting and telescopic part is arranged inside the guide column.

4. The tunnel maintenance system according to claim 2, characterized in that: The second driving assembly includes a first rotary driving member, a driving gear, a rack and a guide rod, the guide rod is fixedly connected to the lifting frame, the lifting platform and the guide rod are slidably matched, the rack is fixedly connected to the lifting frame, the rack and the guide rod are arc-shaped and parallel, the first rotary driving member is fixedly connected to the lifting platform, the driving gear and the output end of the first rotary driving member are coaxially fixedly connected, and the driving gear and the rack are meshed with each other.

5. The tunnel maintenance system according to claim 1, characterized in that: The horizontal driving mechanism includes a first telescopic member, a second telescopic member and a third telescopic member; The first telescopic member, the second telescopic member and the third telescopic member are all fixedly mounted on the lifting platform, wherein the first telescopic member is parallel to the longitudinal guide rail, the second telescopic member and the third telescopic member are both parallel to the transverse guide rail, the first platform is fixedly connected to the movable end of the first telescopic member, the second platform is fixedly connected to the movable end of the second telescopic member, and the third platform is fixedly connected to the movable end of the third telescopic member.

6. The tunnel maintenance system according to claim 1, characterized in that: The hoisting mechanism includes a rotating base, a vertical telescopic arm, an extension arm, a folding telescopic rod and a hoisting assembly; The rotating base is fixedly connected to the carrier vehicle, the vertical telescopic arm is fixedly connected to the rotating base, the extension arm is hinged to the movable end of the vertical telescopic arm, the folding telescopic rod is hinged to the vertical telescopic arm, the other end of the folding telescopic rod is hinged to the extension arm, and the lifting assembly is installed at the free end of the extension arm.

7. The tunnel maintenance system according to claim 6, characterized in that: The vertical telescopic arm and the extension arm are both provided with a single-stage or multi-stage hydraulic cylinder.

8. The tunnel maintenance system according to claim 1, characterized in that: Also included is a mobile lifting frame, which includes a support frame, a vertical guide rail, a placement frame, a vertical telescopic member, a pulley, a traction rope and casters; The vertical guide rail is fixed on the support frame, and the placement frame and the vertical guide rail are slidably matched; the telescopic member and the support frame are fixedly connected, and the telescopic member and the guide rail are arranged in parallel; the pulley is rotatably arranged at the telescopic end of the telescopic member, one end of the traction rope is fixed to the bottom of the support frame, the traction rope passes around the pulley, and the other end of the traction rope is fixed to the placement frame, and a plurality of casters are provided at the bottom of the support frame.

9. The tunnel maintenance system according to any one of claims 1 to 8, characterized in that: It also includes a detachable carriage, which includes a vertical slide groove and a plurality of enclosure plates. The vertical slide groove is vertically fixed on the body of the carrier vehicle, and the enclosure plates and the vertical slide groove are slidably matched.

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