A protective trolley for tunnel maintenance

Abstract

The utility model relates to the field of tunnel construction, concretely relates to a protective trolley for maintenance in a tunnel, which comprises a trolley body, the trolley body comprises a plurality of parallel main longitudinal beams and support units fixed at the left and right ends of the main longitudinal beams, the main longitudinal beams are fixed at the top of the support units, the bottom of the support units is provided with wheels, and a horizontal top plate is fixedly arranged on the top of the main longitudinal beams; the middle of the top plate is high, and the left and right ends are low; and the bottom of the main longitudinal beams is a driving space. Through the protective trolley, the problem that driving safety is endangered by the falling block and delamination phenomenon of the tunnel arch during the daytime tunnel driving is solved.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction, specifically to a protective trolley for maintenance inside tunnels. Background Technology

[0002] Highway tunnels may suffer damage after years of use and require maintenance. For example, with use, the tunnel arch may crack and leak water, sometimes even dripping in a line. Furthermore, the concrete in the arch may sag and delaminate, endangering traffic safety. Therefore, repairs are necessary when damage occurs to the tunnel's inner walls.

[0003] However, tunnel repairs cannot be completed overnight; the repair period can take several days or months. Some highways are major transportation arteries with high daily traffic volume. If construction is carried out during the day and the tunnel is closed for a long time, it will inevitably affect traffic, causing traffic jams and paralysis, and affecting people's normal travel.

[0004] Therefore, the tunnel needs to be closed for construction at night when traffic is low, and opened during the day to allow normal traffic flow. However, during the daytime, the tunnel arch may experience rockfalls and delamination, endangering driving safety. Utility Model Content

[0005] The present invention aims to provide a protective trolley for tunnel maintenance, in order to solve the problem of tunnel arch collapse and delamination that endanger traffic safety when the tunnel is open to traffic during the day.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a protective trolley for tunnel maintenance, comprising a vehicle body, the vehicle body comprising multiple parallel main longitudinal beams and support units fixed at the left and right ends of the main longitudinal beams, the main longitudinal beams being fixed on the top of the support units, wheels being provided at the bottom of the support units, and a horizontally placed top plate being fixed on the top of the main longitudinal beams; the top plate is higher in the middle and lower at the left and right ends; the space below the main longitudinal beams is the driving space.

[0007] The principle and advantages of this scheme are as follows: The support unit is used to support the main longitudinal beam and the roof slab. The roof slab is located on the main longitudinal beam, which in turn supports the roof slab. Wheels are installed at the bottom of the support unit, allowing vehicles to move within the tunnel. During the day when the tunnel is not under construction, this protective trolley can be moved to the damaged section of the tunnel arch, allowing vehicles to pass through the driving space under the main longitudinal beam without obstructing normal traffic. Simultaneously, the roof slab protects the damaged section of the tunnel arch, catching any water leaking from it. Because the roof slab is higher in the middle and lower at both ends, the water flows towards the left and right ends, eventually dripping into the ditches on both sides of the road. If there is any rockfall or delamination in the tunnel arch, the falling objects can be caught by the roof slab, preventing them from hitting vehicles traveling below. In this way, when the tunnel is open to traffic during the day, there is no need to worry about water leakage in the tunnel arch or the occurrence of falling blocks and delamination. Water leaking from the tunnel arch and falling objects can be caught by the roof slab, thus not affecting the safety of driving inside the tunnel.

[0008] During nighttime construction, the tunnel is closed off, and the protective trolley is moved to an undamaged section of the tunnel. The protective trolley no longer obstructs the damaged parts of the tunnel arch, and then repair work is carried out on the damaged parts of the tunnel arch.

[0009] In summary, this protective trolley is easy to move. During the daytime when the tunnel is open to traffic, the trolley can be moved to the damaged section of the tunnel arch, protecting vehicles passing below and eliminating concerns about the tunnel arch damage endangering traffic safety. At night, when tunnel construction is underway, the trolley can be moved away, no longer obstructing the damaged section of the tunnel arch, thus allowing for normal construction and repair work.

[0010] Preferably, as an improvement, multiple transverse distribution beams are provided between the main longitudinal beam and the top plate. The multiple distribution beams are arranged in parallel and perpendicular to the main longitudinal beam. The distribution beams are divided into three regions according to the length direction of the main longitudinal beam. The three regions are the middle region and the side regions located on both sides of the middle region. The height of the distribution beam in the middle region is higher than the height of the distribution beam in the side region.

[0011] Therefore, the distribution beam is located between the top plate and the main longitudinal beam. The height of the distribution beam in the middle area is higher than the height of the distribution beam in the side areas. In this way, the top plate is located on the distribution beam, and the distribution beam in the middle area raises the middle part of the top plate, so that the top surface of the top plate is arc-shaped, and the middle part of the top plate is higher than the two ends. Water falling on the top plate can flow automatically to the two ends of the top plate.

[0012] Preferably, as an improvement, the number of distribution beams in the middle area is 5-10, and the number of distribution beams in the side areas is 5-10.

[0013] Preferably, as an improvement, the distribution beam in the middle area is made of 10# channel steel, and the distribution beam in the side area is made of 8# channel steel. One side wall of the distribution beam abuts against the main longitudinal beam, and the other side wall of the distribution beam abuts against the top plate.

[0014] Therefore, the width of the 10# channel steel is greater than that of the 8# channel steel. By taking advantage of the difference in width between the 10# and 8# channel steel, the top is placed in an arc shape on the distribution beam, and the middle of the top plate is higher than the end of the top plate.

[0015] Preferably, as an improvement, each support unit includes a bottom crossbeam and multiple columns. The bottom crossbeam is fixedly connected to the bottom of the multiple columns, and the wheels are installed on the bottom of the bottom crossbeam. Horizontal bars and diagonal bars are fixedly connected between adjacent columns.

[0016] Therefore, the bottom crossbeam connects multiple columns together, allowing them to provide stable support for the main longitudinal beam. Horizontal and diagonal braces connect adjacent columns, forming a triangular structure. The stability of a triangle enhances the stability of the support unit, enabling it to withstand certain forces and preventing the protective trolley from collapsing.

[0017] Preferably, as an improvement, there are two horizontal bars between adjacent columns and two diagonal bars between adjacent columns. The two diagonal bars are arranged intersectingly, and both diagonal bars are located between the two horizontal bars. Thus, the two horizontal bars are distributed vertically, and the two diagonal bars are located between the two horizontal bars. Compared with setting one horizontal bar and one diagonal bar, the structural stability of the support unit can be improved more effectively.

[0018] Preferably, as an improvement, the support unit also includes an upper crossbeam, which is fixedly connected to the tops of multiple columns, and the ends of the main longitudinal beam are fixedly connected to the upper crossbeam. Thus, the upper crossbeam connects the tops of multiple columns together, achieving fixation of the tops of the columns, and the two ends of the multiple columns are fixed to the upper and lower crossbeams respectively, making the multiple columns more stable. Simultaneously, the upper crossbeam also serves to fix the ends of the main longitudinal beam. As a carrier for fixing the main longitudinal beam, the upper crossbeam achieves a fixed connection between the main longitudinal beam and the support unit.

[0019] Preferably, as an improvement, a wheel seat is installed at the bottom of the support unit, the wheel is rotatably connected to the wheel seat, and a motor for driving the wheel to rotate is provided on the wheel seat.

[0020] Thus, the motor drives the wheels to rotate, thereby enabling the movement of this protective trolley. The movement of this protective trolley does not require manual pushing, making it convenient to move.

[0021] Preferably, as an improvement, guardrails are connected to both ends of the distribution beam. When an object falls off the tunnel ceiling, it needs to be manually cleared from the roof. At this time, construction workers climb onto the roof to clear the object. The guardrails can protect the workers on the roof, preventing them from falling and improving safety.

[0022] Preferably, as an improvement, a staircase is connected to the support unit. The staircase facilitates workers' access from the ground to the top slab.

[0023] Preferably, as an improvement, water-blocking parts are fixedly connected to both the front and rear ends of the top plate.

[0024] Therefore, the water-blocking part can block the water on the top plate, preventing the liquid on the surface of the top plate from flowing to the ground from the front and rear ends of the top plate, and ensuring that the liquid on the top plate can flow to the water ditch on the ground from the left and right ends of the top plate.

[0025] Preferably, as an improvement, the cross-section of the water-blocking part is "L" shaped, and the bottom of the water-blocking part is attached to the upper surface of the top plate.

[0026] Therefore, the top plate is placed on the distribution beam, and the bottom of the top plate is attached to the distribution beam. By attaching and fixing the bottom of the water-blocking part to the upper surface of the top plate, the water-blocking part and the top plate are fixed. In this way, the distribution beam and the top plate are tightly attached and will not affect or hinder the connection and fixation of the water-blocking part and the top plate.

[0027] Preferably, as an improvement, the water-blocking part is made of rubber. The rubber water-blocking part has a certain degree of flexibility, and the bottom of the water-blocking part and the upper surface of the top plate fit tightly together. The sealing between the bottom of the water-blocking part and the upper surface of the top plate is good, and liquid will not flow out from the gap between the top plate and the bottom of the water-blocking part, thereby ensuring that the liquid on the top plate flows out from the left and right ends of the top plate.

[0028] Preferably, as an improvement, the bottom and top plates of the water-blocking part are fixedly connected by bolts and nuts.

[0029] Preferably, as an improvement, the bolts are located between adjacent distribution beams. Thus, the bolts pass through the bottom of the top plate and the water-retaining section from the gap between adjacent distribution beams, and the arrangement of the distribution beams does not affect the connection between the bolt top plate and the bottom of the water-retaining section. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a protective trolley used for maintenance inside a tunnel. The left and right directions in the diagram represent the width of the tunnel.

[0031] Figure 2 for Figure 1 Side view of the central support unit.

[0032] Figure 3 This is a top view of the roof slab and distribution beams. The left and right directions in the figure represent the length of the tunnel.

[0033] Figure 4 This is a schematic diagram of the water-blocking part connected to the top plate.

[0034] Figure 5 for Figure 4 A magnified view of A in the middle. Detailed Implementation

[0035] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: wheel 1, rail 2, column 3, upper crossbeam 4, main longitudinal beam 5, guardrail 6, top plate 7, distribution beam 8, first distribution beam 81, second distribution beam 82, motor 9, bottom crossbeam 10, crossbar 11, diagonal bar 12, side of water-blocking part 13, bottom of water-blocking part 14, bolt 15, nut 16.

[0036] Example 1 The basics are as follows: Figures 1-3 As shown: A protective trolley for maintenance in a tunnel includes a vehicle body, which includes multiple parallel main longitudinal beams 5 and support units fixed at the left and right ends of the main longitudinal beams 5.

[0037] Combination Figure 2 As shown, the support unit in this embodiment includes an upper crossbeam 4, a bottom crossbeam 10, and multiple columns 3. In this embodiment, the upper crossbeam 4 is made of 45b I-beam steel, and is a single I-beam. The bottom crossbeam 10 is made of 45b I-beam steel, and is a double I-beam. The columns 3 are made of 25b I-beam steel, and there are seven columns 3. A base is welded to the bottom of each column 3, and the base is bolted to the bottom crossbeam 10. A top seat is welded to the top of each column 3, and the top seat is bolted to the upper crossbeam 4. Wheel seats are bolted to the bottom crossbeam 10 in this embodiment. Wheels 1 are rotatably mounted on the wheel seats. A motor 9 is mounted on one of the wheel seats. The motor 9 drives the wheel 1 to rotate via a belt drive or a sprocket and chain drive, thereby moving the protective trolley.

[0038] In this embodiment, adjacent columns 3 are fixedly connected by horizontal bars 11 and diagonal bars 12. There are two horizontal bars 11 between adjacent columns 3, and two diagonal bars 12 between adjacent columns 3. The two diagonal bars 12 are arranged intersectingly, each located between two horizontal bars 11. In this embodiment, both the horizontal bars 11 and diagonal bars 12 are channel steel. Connecting plates are welded to the columns 3, and the ends of the horizontal bars 11 and diagonal bars 12 are fixed to the connecting plates with bolts. In this embodiment, the length of the diagonal bar 12 is 1.55m, and the length of the horizontal bar 11 is 1.032m.

[0039] In this embodiment, the main longitudinal beam 5 is fixed on the top of the support unit. The main longitudinal beam 5 is a 45b I-beam, and there are seven main longitudinal beams 5 arranged in parallel. The ends of the main longitudinal beams 5 are bolted to the top of the upper crossbeams 4 of the two support units. Below the main longitudinal beams 5 is the travel space.

[0040] Multiple transversely arranged distribution beams 8 are welded to the top of the main longitudinal beam 5. The distribution beams 8 are parallel to the upper crossbeam 4. A transverse top plate 7, made of steel and 3-8mm thick, is placed on the distribution beams 8. The top plate 7 is higher in the middle and lower at both ends. In this embodiment, the multiple distribution beams 8 are arranged in parallel, with a distance of 0.5-1m between adjacent distribution beams 8. The distribution beams 8 are perpendicular to the main longitudinal beam 5. The distribution beams 8 extend along the length of the tunnel. The length of the distribution beams 8 along the main longitudinal beam 5 is divided into three regions: a central region and side regions located on both sides of the central region. The distribution beams in the central region are named the first distribution beams 81, and there are 5-10 of them, specifically 8. The distribution beams in the side regions are named the second distribution beams 82, and there are 5-10 of them, specifically 7. The height of the first distribution beam 81 in the middle area is higher than the height of the second distribution beam 82 in the side area. Specifically, the first distribution beam 81 in the middle area is a No. 10 channel steel, and the second distribution beam 82 in the side area is a No. 8 channel steel. One side of the channel steel abuts against the main longitudinal beam 5, and the other side of the channel steel abuts against the top plate 7. By utilizing the different widths of the No. 10 channel steel and the No. 8 channel steel, the height of the first distribution beam 81 in the middle area is higher than the height of the second distribution beam 82 in the side area, so that the top plate 7 is placed on the distribution beam 8, and the middle part of the top plate 7 is higher than the left and right ends of the top plate 7.

[0041] Both ends of the distribution beam 8 are connected to guardrails 6 by welding or bolting. The guardrails 6 are enclosed guardrails. A staircase is connected to the support unit. Connecting rods are welded to the sides of the staircase and are fixed to the column 3 by bolting or welding.

[0042] In this embodiment, a steel rail 2 is fixed on the ground of the tunnel, and the wheel 1 is located on the steel rail 2, moving along the steel rail 2.

[0043] The specific implementation process is as follows: The wheels 1 enable the protective trolley to move within the tunnel. During the day when the tunnel is not under construction, the motor 9 drives the wheels 1 to rotate, and the wheels 1 move on the rails 2, causing the protective trolley to move to the damaged section of the tunnel arch. Vehicles can then pass through the driving space under the main longitudinal beam 5 without affecting normal vehicle traffic. Simultaneously, the roof slab 7 shields the damaged section of the tunnel arch. Water leaking from the tunnel arch is caught by the roof slab 7. Because the roof slab 7 is higher in the middle and lower on both sides, the water caught by the roof slab 7 flows to the left and right sides of the roof slab 7, eventually dripping into the ditches on both sides of the road. If there are any collapses or delaminations in the tunnel arch, the falling objects can be caught by the roof slab 7, preventing objects from collapsing from the tunnel roof and hitting vehicles traveling below. In this way, when the tunnel is open to traffic during the day, there is no need to worry about water leakage in the tunnel arch or the occurrence of falling blocks and delamination. Leaking water and falling objects can be caught by the top plate 7, so as not to affect the safety of driving in the tunnel.

[0044] During nighttime construction, the tunnel is closed off, and the protective trolley is moved to an undamaged section of the tunnel. The protective trolley no longer obstructs the damaged parts of the tunnel arch, and then repair work is carried out on the damaged parts of the tunnel arch without the protective trolley interfering with the repair work.

[0045] If there are objects that have fallen off the tunnel remaining on the roof slab 7, workers can also climb the stairs to the roof slab 7 above the main longitudinal beam 5 to clean up the objects on the roof slab 7.

[0046] Example 2 This embodiment is a further improvement upon Embodiment 1. Combined with... Figure 4 and Figure 5 As shown, in this embodiment, after the top plate 7 is placed on the distribution beam 8, strip-shaped water-blocking parts (made of rubber) are fixedly connected to both the front and rear ends of the top plate 7. The cross-section of the water-blocking part in this embodiment is "L"-shaped. The bottom 14 of the water-blocking part is attached to the upper surface of the top plate 7, and the side 13 of the water-blocking part is vertically positioned higher than the upper surface of the top plate 7, thereby blocking water on the top plate 7. The bottom 14 of the water-blocking part and the top plate 7 are fixedly connected in this embodiment by bolts 15 and nuts 16. The bolts 15 are located between adjacent distribution beams 8, passing upwards through the top plate 7 and the bottom 14 of the water-blocking part, and then the nuts 16 are tightened onto the bolts 15. Multiple bolts 15 are distributed along the length of the water-blocking part.

[0047] Therefore, the water-blocking part in this embodiment is simple to install. The water-blocking part can be easily installed on the front and rear ends of the top. The side 13 of the water-blocking part can block the water on the top plate 7, preventing the liquid on the surface of the top plate 7 from flowing from the front and rear ends of the top plate 7 to the ground, and ensuring that the liquid on the top plate 7 can flow from the left and right ends of the top plate 7 into the water ditch on the ground.

[0048] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A protective trolley for maintenance inside tunnels, characterized in that: The vehicle includes a vehicle body, which includes multiple parallel main longitudinal beams and support units fixed at the left and right ends of the main longitudinal beams. The main longitudinal beams are fixed on the top of the support units, and wheels are provided at the bottom of the support units. A horizontally placed top plate is fixed on the top of the main longitudinal beams. The top plate is higher in the middle and lower at the left and right ends. The space below the main longitudinal beams is the driving space.

2. The protective trolley for tunnel maintenance according to claim 1, characterized in that: Multiple transverse distribution beams are provided between the main longitudinal beam and the top plate. The distribution beams are arranged in parallel and are perpendicular to the main longitudinal beam. The distribution beams are divided into three regions according to the length of the main longitudinal beam. The three regions are the middle region and the side regions located on both sides of the middle region. The height of the distribution beams in the middle region is higher than the height of the distribution beams in the side regions.

3. A protective trolley for tunnel maintenance according to claim 2, characterized in that: The number of distribution beams in the middle area is 5-10, and the number of distribution beams in the side areas is 5-10.

4. A protective trolley for tunnel maintenance according to claim 2, characterized in that: The distribution beams in the middle area are made of 10# channel steel, and the distribution beams in the side areas are made of 8# channel steel. One side wall of the distribution beam abuts against the main longitudinal beam, and the other side wall of the distribution beam abuts against the top plate.

5. A protective trolley for tunnel maintenance according to claim 1, characterized in that: Each support unit includes a bottom crossbeam and multiple columns. The bottom crossbeam is fixedly connected to the bottom of the multiple columns, and the wheel is installed on the bottom of the bottom crossbeam. Horizontal bars and diagonal bars are fixedly connected between adjacent columns.

6. A protective trolley for tunnel maintenance according to claim 5, characterized in that: There are two horizontal bars between adjacent columns and two diagonal bars between adjacent columns. The two diagonal bars are intersected and are located between the two horizontal bars.

7. A protective trolley for tunnel maintenance according to claim 5, characterized in that: The support unit also includes an upper crossbeam, which is fixedly connected to the top of multiple columns, and the end of the main longitudinal beam is fixedly connected to the upper crossbeam.

8. A protective trolley for tunnel maintenance according to claim 1, characterized in that: The bottom of the support unit is equipped with a wheel seat, the wheel is rotatably connected to the wheel seat, and the wheel seat is equipped with a motor for driving the wheel to rotate.

9. A protective trolley for tunnel maintenance according to claim 2, characterized in that: Guardrails are connected to both ends of the distribution beam.

10. A protective trolley for tunnel maintenance according to claim 1, characterized in that: A staircase is connected to the support unit.

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