Tunnel heading supporting operation trolley suitable for double-side-wall heading method

Abstract

The invention discloses a tunnel pilot tunnel supporting operation trolley suitable for a double-side-wall pilot tunnel method. The tunnel pilot tunnel supporting operation trolley comprises a trolley frame, a plurality of hydraulic lifting rods, a walking mechanism, a supporting frame body, a fastener, two overturning operation platforms, two fixing chains and a magnetic suction splash-proof curtain. The upper end of each hydraulic lifting rod is fixedly connected with the frame, and the lower end is fixedly connected with the walking mechanism; the two overturning operation platforms are arranged on the two sides of the interior of the frame correspondingly; one side of each turnover operation platform is hinged with the frame, and the other side of each turnover operation platform is connected with the frame through a fixing chain; under the state that the overturning operation platform is perpendicular to the frame, the fixing chain is straightened; the supporting frame body comprises a climbing frame and a plurality of hydraulic lifting supporting legs arranged below the climbing frame. The magnetic splash-proof curtain comprises a magnetic strip and a flexible check curtain; the magnetic strip covers the upper end of the flexible check curtain; and the magnetic strips are magnetically attracted to the frame. The supporting operation trolley solves the problems that sprayed concrete on the top of a pilot tunnel falls off and sprayed concrete on the front side of the pilot tunnel splashes back when constructors operate, and the construction quality and the construction efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a tunnel pilot pit support operation trolley suitable for a double-side wall pilot pit method. Background Art

[0002] The "double-sidewall pilot method" is a construction method primarily used for excavating large-section tunnels or underground chambers in weak surrounding rock (such as soil, strongly weathered rock, or fractured zones). Its core concept is to "break the large section into smaller sections, gradually form loops, and promptly close the tunnel." This method involves dividing the large section into several small pilot pits, which are excavated in stages. Initial support (usually steel arches and shotcrete) is immediately applied after each pilot pit is excavated. The temporary support provided by the sidewall pilot pits stabilizes the core soil. Ultimately, a complete support structure is established before core soil excavation can proceed.

[0003] The most significant feature of this method is the use of the pre-excavated two side pilot pits and their supporting structures (i.e., "double side walls") as temporary supports for the entire excavation surface, significantly improving safety during construction. Summary of the Invention

[0004] In order to enrich the product variety of tunnel support operation trolleys and improve construction efficiency, an embodiment of the present invention provides a tunnel pilot pit support operation trolley suitable for a double-side wall pilot pit method.

[0005] In a first aspect, an embodiment of the present invention provides a tunnel pilot support operation trolley suitable for a double-sidewall pilot method, comprising a frame, multiple hydraulic lifting rods, a traveling mechanism, a support frame, fasteners, two flip work platforms, two fixing chains, and a magnetic splash curtain; The upper end of each hydraulic lifting rod is fixedly connected to the vehicle frame, and the lower end is fixedly connected to the walking mechanism; The two turning working platforms are respectively arranged on both sides of the interior of the frame; One side of each of the flip work platforms is hinged to the vehicle frame so that the flip work platform can rotate relative to the vehicle frame, and the other side is connected to the vehicle frame via a corresponding fixed chain; When the flipping work platform is perpendicular to the side wall of the vehicle frame, the fixed chain is straightened obliquely, and the support frame is detachably arranged below the flipping work platform; The support frame includes a climbing frame and a plurality of hydraulic lifting legs arranged below the climbing frame; The plurality of hydraulic lifting rods and the plurality of hydraulic lifting legs can be raised and lowered synchronously; When the flip work platform is in contact with the side wall of the vehicle frame, the fastener locks and fixes the flip work platform to the side wall of the vehicle frame; The magnetic splash-proof curtain comprises a magnetic strip and a flexible curtain; the magnetic strip is coated on the upper end of the flexible curtain; The magnetic strip is magnetically adsorbed to any position of the frame; A top operating platform is provided on the top of the vehicle frame.

[0006] In one or some optional embodiments, the vehicle frame includes an inner structural frame and an outer structural frame of the same shape; A plurality of connecting rods are welded between the inner structural frame and the outer structural frame; The inner layer structural frame comprises a first trapezoidal structural segment and a first rectangular main body segment connected up and down; The outer structural frame comprises a second trapezoidal structural segment and a second rectangular main body segment connected up and down; The cross-sections of the first trapezoidal structural segment and the second trapezoidal structural segment are trapezoidal and tend to converge upwards; The top operating platform is fixed to the top of the second trapezoidal structure segment, and the width of the top operating platform is consistent with the width of the top of the second trapezoidal structure segment.

[0007] In one or some optional embodiments, the tunnel pilot pit support operation trolley applicable to the double-sidewall pilot pit method further includes an articulated structure; The hinge structure connects the turnover working platform and the first rectangular main body section respectively.

[0008] In one or some optional embodiments, the magnetic splash-proof curtain further includes a counterweight bar; The counterweight strip is covered on the lower end of the flexible curtain.

[0009] In one or some optional embodiments, the walking mechanism includes crawler chassis respectively arranged on both sides below the frame.

[0010] In one or some optional embodiments, the tunnel pilot pit support operation trolley suitable for the double-sidewall pilot pit method further includes a tilt sensor, a controller and a buzzer; Each of the crawler chassis is provided with the tilt sensor; The controller is respectively connected to the tilt sensor, the buzzer, the plurality of hydraulic lifting legs and the plurality of hydraulic lifting rods by signals; The controller can control the buzzer to alarm according to the monitoring result of the tilt sensor; The controller is capable of controlling the multiple hydraulic lifting legs and the multiple hydraulic lifting rods to rise and fall synchronously; The buzzer is arranged on the vehicle frame.

[0011] In one or some optional embodiments, the tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method further includes a detachable frame arranged above the top operating platform.

[0012] In one or some optional embodiments, the turning operation platform includes a steel mesh layer and a steel frame layer arranged upper and lower.

[0013] In one or some optional embodiments, an outer side operating platform is provided on the outer side of the frame; The outer operating platform includes an operating platform body and a reinforcement frame connected up and down.

[0014] In one or some optional embodiments, the fastener comprises a bolt and a nut; Each of the turning working platforms is provided with a first through hole; The side wall of the frame is provided with a second through hole; When the turnover work platform is in contact with the side wall of the vehicle frame, the bolt passes through the first through hole and the second through hole, and the nut is threadedly connected to the bolt.

[0015] The beneficial effects of the above technical solutions provided in the embodiments of the present invention include at least: The embodiment of the present invention provides a tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method. The walking mechanism can drive the frame to move, and the flipping operation platform can be flipped to be perpendicular to the inner side of the frame. It is fixed to the frame by an iron chain and the bottom support is provided by the support frame, thereby realizing double support and protection for the flipping operation platform flipped to be perpendicular to the frame, allowing construction workers to perform spray anchor support operations at an intermediate height position inside the frame, reducing the limitations on operating space and operating angles, and solving the problems of sprayed concrete falling from the top of the pilot pit and splashing back of sprayed concrete on the front side when construction workers are working. In addition, by synchronously lifting multiple hydraulic lifting rods and multiple hydraulic lifting legs, the support operation trolley can be suitable for pilot pits of different heights, thereby improving construction quality and construction efficiency.

[0016] The tunnel pilot support trolley for the double-sidewall pilot method provided by the present invention has a reversible working platform that can be flipped over to fit snugly against the inside of the vehicle frame and stowed after the spray-anchor support work in the current construction section is completed. The lower support frame can also be disassembled and recycled for use in the next construction section. With the retractable working platform stowed, the clearance within the vehicle frame is increased, allowing personnel and machinery to pass under the trolley. When necessary, the loader bucket can lift and move the trolley from the underside to prevent the trolley from being unable to exit the tunnel in the event of a travel mechanism failure.

[0017] The embodiment of the present invention provides a tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method. Construction workers can work inside the frame, which solves the problem of workers being too close to the rock surface and insufficient operating space due to the narrow space in the pilot pit, greatly reduces the back splash of the front side sprayed concrete, and a top operating platform is provided on the top of the frame, so there is no need to worry about the top sprayed concrete falling. The magnetic splash-proof curtain can be magnetically adsorbed to any position of the frame and is quick to install. It can be quickly magnetically installed at the required position before the support operation, which more effectively reduces the risk of workers being splashed by concrete.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 A front view of a tunnel pilot pit support operation trolley suitable for a double-sidewall pilot pit method provided in an embodiment of the present invention; Figure 2 A schematic structural diagram of a turning operation platform provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a magnetic splash-proof curtain provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a support frame provided in an embodiment of the present invention.

[0021] Reference numerals: 1. Vehicle frame; 11. Inner structural frame; 12. Outer structural frame; 2. Travel mechanism; 21. Crawler chassis; 3. Support frame; 31. Climbing frame; 32. Hydraulic lifting legs; 4. Top operating platform; 5. Turning operating platform; 51. Steel mesh layer; 52. Steel frame layer; 6. Fixed chain; 7. Removable frame; 8. Outer operating platform; 81. Operating platform body; 82. Reinforcement frame; 9. Guide pit; 10. Auxiliary frame; 101. Hydraulic lifting rod; 20. Magnetic splash curtain; 201. Magnetic strip; 202. Flexible curtain; 203. Counterweight bar. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0023] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "back" and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The inventors have discovered that in the current practice of double-side wall pilot tunnel construction, the cross-sectional size of the pilot tunnel excavation is relatively small, resulting in very limited working space in the sprayed anchor support construction area, and usually requires manual labor with the help of a support operation trolley to perform sprayed anchor support operations. Existing support operation trolleys are usually equipped with an outward-expanding working platform. During support operations, the flanks of the support trolley are too close to the rock surface, which can easily cause construction workers to face the safety risks of sprayed concrete falling from the top of the pilot tunnel and sprayed concrete splashing back from the front side during operations. In addition, manual sprayed anchor support operations are limited to the ground or on the top of the trolley, while the sprayed anchor support operations in the middle part of both sides of the excavation face are difficult to ensure construction quality due to the space limitations of the pilot tunnel. The movement of the support trolley usually relies on a loader, and even a mini loader is relatively large in size. Therefore, when space is limited, the movement of the support trolley takes a long time.

[0026] Based on this, the inventors have made the present invention after further research and development, providing a tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method.

[0027] The embodiment of the present invention provides a tunnel guide pit support operation trolley suitable for the double side wall guide pit method, referring to Figure 1-Figure 4 As shown, it includes a frame 1, multiple hydraulic lifting rods 101, a walking mechanism 2, a support frame 3, fasteners (not shown in the figure), two flip work platforms 5, two fixed chains 6 and a magnetic splash curtain 20; The upper end of each hydraulic lifting rod 101 is fixedly connected to the vehicle frame 1, and the lower end is fixedly connected to the walking mechanism 2; The walking mechanism 2 is arranged at the bottom of the frame 1; The two turning working platforms 5 are respectively arranged on both sides of the interior of the vehicle frame 1; One side of each of the flip work platforms 5 is hinged to the vehicle frame 1 so that the flip work platform 5 can rotate relative to the vehicle frame 1, and the other side is connected to the vehicle frame 1 via a corresponding fixed chain 6; When the flipping work platform 5 is perpendicular to the side wall of the vehicle frame 1, the fixed chain 6 is straightened obliquely, and the support frame 3 is detachably arranged below the flipping work platform 5; The support frame 3 includes a climbing frame 31 and a plurality of hydraulic lifting legs 32 arranged below the climbing frame 31; The plurality of hydraulic lifting rods 101 and the plurality of hydraulic lifting legs 32 can be raised and lowered synchronously; When the flipping work platform 5 is in contact with the side wall of the vehicle frame 1 , the fasteners lock and fix the flipping work platform 5 to the side wall of the vehicle frame 1 ; The magnetic splash-proof curtain 20 includes a magnetic strip 201 and a flexible curtain 202; the magnetic strip 201 is coated on the upper end of the flexible curtain 202; The magnetic strip 201 can be magnetically attached to any position of the vehicle frame, thereby installing the magnetic splash screen 20 at a desired position; A top operating platform is provided on the top of the vehicle frame.

[0028] In the embodiment of the present invention, the traveling mechanism 2 is used to drive the vehicle frame 1 to move in the guide pit 9, without relying on a loader, and can ensure that the support work trolley can pass stably and quickly in the guide pit. When the flipping work platform 5 is flipped to be perpendicular to the side wall of the vehicle frame 1, it is in the working state and can be used for construction workers to work. At this time, the fixed chain 6 is straightened diagonally to fix the flipping work platform 5 diagonally. After the support frame 3 is placed at the bottom of the flipping work platform 5 for support, the construction workers can work safely on the flipping work platform 5; when the flipping work platform 5 is in contact with the side wall of the vehicle frame 1, the flipping work platform 5 can be locked and fixed to the side wall of the vehicle frame 1 by fasteners, so that the clear distance under the vehicle frame 1 is increased, which can be used for people and tools to pass through and avoid collisions.

[0029] In the embodiment of the present invention, construction workers can work inside the vehicle frame 1, which solves the problem of workers being too close to the rock surface and insufficient operating space due to the narrow space in the guide pit, greatly reduces the splashback of the front side sprayed concrete, and a top operating platform 4 is provided on the top of the vehicle frame 1, so there is no need to worry about the top sprayed concrete falling, and the magnetic splash-proof curtain 20 can be magnetically adsorbed to any position of the vehicle frame and is quick to install. It can be quickly magnetically installed at the required position before the support operation, further reducing the risk of workers being splashed by concrete.

[0030] In this embodiment, construction workers can reach the flip work platform 5 through the climbing frame 31. After the construction workers are in position on the flip work platform 5, they can simultaneously raise multiple hydraulic lifting rods 101 and multiple hydraulic lifting legs 32 to enable the workers to reach different height positions, thereby being able to adapt to the work requirements of guide pits 9 at different heights.

[0031] The embodiment of the present invention provides a tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method. The frame 1 is adapted to the small cross-sectional size of the pilot pit 9. The walking mechanism 2 can drive the frame 1 to move and can be flipped to be perpendicular to the inner side surface of the frame 1. It is fixed to the frame 1 by an iron chain and provided with bottom support by the support frame 3, thereby realizing double support protection for the working state, allowing construction workers to perform spray anchor support operations at the middle height position inside the frame 1, reducing the restrictions on the operating space and operating angle, and solving the problem of sprayed concrete falling from the top of the pilot pit 9 and splashing back of sprayed concrete on the front side when construction workers are working. In addition, by synchronously lifting multiple hydraulic lifting rods 101 and multiple hydraulic lifting legs 32, the support operation trolley can be adapted to pilot pits 9 of different heights, thereby improving construction quality and construction efficiency.

[0032] In the tunnel pilot support operation trolley suitable for the double-sidewall pilot method provided by the embodiment of the present invention, after the spray anchor support operation in the current construction section is completed, the flip work platform 5 can be flipped to be close to the inside of the vehicle frame 1 and stowed, and the lower support frame 3 can also be disassembled and recycled for use in the next construction section. With the flip work platform 5 stowed, the clearance within the vehicle frame 1 is increased, allowing personnel and mechanical equipment to pass under the trolley. When necessary, the loader bucket can lift and move the trolley from the bottom side to prevent the trolley from being unable to move out of the tunnel in the event of a failure of the traveling mechanism 2.

[0033] In the embodiment of the present invention, referring to Figure 1As shown, the vehicle frame 1 includes an inner structural frame 11 and an outer structural frame 12 of identical shape. Both the inner structural frame 11 and the outer structural frame 12 are welded from I-beams. The outer structural frame 12 is larger than the inner structural frame 11. A connecting rod is welded between the inner structural frame 11 and the outer structural frame 12, thereby forming an overall double-layer frame body, effectively improving stability and facilitating the installation of the running mechanism 2 below. The connecting rod can be an I-beam of a predetermined length.

[0034] In the embodiment of the present invention, referring to Figure 1 As shown, the inner structural frame 11 includes a first trapezoidal structural segment and a first rectangular main segment connected vertically, while the outer structural frame 12 includes a second trapezoidal structural segment and a second rectangular main segment connected vertically. The first and second trapezoidal structural segments have trapezoidal cross-sections that tend to converge upward, thereby better adapting to the shape of the upper portion of the pilot pit 9 and avoiding difficulties in passing or scratches caused by an excessively wide top. The top operating platform 4 is fixed to the top of the second trapezoidal structural segment, and the width of the top operating platform 4 is consistent with the width of the top of the second trapezoidal structural segment. When necessary, construction workers can perform construction work on the top of the pilot pit 9 from the top operating platform 4, ensuring that the work platform can meet the construction needs of various parts of the pilot pit 9.

[0035] In the embodiment of the present invention, the magnetic splash-proof curtain 20 can be magnetically adsorbed at any position of the inner structural frame 11 and the outer structural frame 12. The flexible curtain 202 of the magnetic splash-proof curtain 20 can be made of flexible PVC material, thereby meeting the requirements of waterproof, corrosion-resistant and light installation. Figure 3 As shown, the lower end of the flexible curtain 202 can be covered with an appropriate amount of counterweight strip 203, and the counterweight strip 203 can ensure the draping force of the flexible curtain 202 to resist the impact force of the back splash and improve the anti-splashing effect.

[0036] In an optional embodiment, the flip work platform 5 can be hinged to the inner structural frame 11 of the vehicle frame 1 through an articulated structure. The articulated structure can be in the form of a hinge, with two hinges respectively fixedly connecting the flip work platform 5 and the first rectangular main section of the inner structural frame 11, and a hinge shaft inserted into the two hinges. This allows the flip work platform 5 to be hinged to the middle of the inner side of the vehicle frame 1, and operators can perform spray anchor support operations on the flip work platform 5. Since the operators are always located inside the vehicle frame 1 and a top operating platform 4 is provided on the top of the vehicle frame 1, combined with the shielding effect of the magnetic splash-proof curtain 20, the problem of sprayed concrete falling from the top of the guide pit 9 and splashing back from the front side of the sprayed concrete during the operators' operations is solved.

[0037] In an optional embodiment, a fixed chain 6 is welded to the tilting work platform 5 and the inner structural frame 11. The fixed chain 6 is fixedly connected to the top I-beam of the first rectangular main section of the inner structural frame 11. The top I-beam of the first rectangular main section is also the bottom I-beam of the first trapezoidal structural section. The fixed chain 6 can be a ø5×15 iron chain.

[0038] In an alternative embodiment, reference Figure 1-Figure 2 As shown, the reversible work platform 5 comprises a steel mesh layer 51 and a steel frame layer 52 arranged above and below. The steel frame layer 52 can be welded together using steel pipes. The steel mesh layer 51 is laid atop the steel frame layer 52 and secured to the steel frame layer 52 by means of wire tying. This minimizes the weight of the reversible work platform 5 while ensuring a sufficiently high load-bearing capacity. The specific structure of the top operating platform 4 is identical to that of the reversible work platform 5, and any overlaps will not be further described. The steel mesh layer 51 can be constructed of a steel mesh with a pore size of 150 mm and a diameter of 6 mm.

[0039] In an alternative embodiment, reference Figure 1 and Figure 4 As shown, the climbing frame 31 is a ladder-shaped structure that facilitates climbing to the reversible work platform 5. The climbing frame 31 is welded from steel pipes with a wall thickness greater than 3.5 mm to prevent weld leaks while ensuring support strength. Multiple hydraulically-operated legs 32 are fixedly connected to the lower portion of the climbing frame 31, specifically by welding. The support frame 3 is separate from the vehicle frame 1 and can be disassembled and recycled after the reversible work platform 5 is folded.

[0040] In an alternative embodiment, reference Figure 1 As shown, the traveling mechanism 2 includes crawler chassis 21 disposed on either side of the frame 1. The width of the crawler chassis 21 is equal to or slightly greater than the distance from the innermost point of the inner structural frame 11 to the outermost point of the outer structural frame 12, thereby ensuring a stable connection between the frame 1 and the crawler chassis 21. Furthermore, the use of the crawler chassis 21 as the traveling mechanism 2 effectively prevents the work platform from becoming top-heavy compared to wheels, reducing the risk of the work platform tipping over. The crawler chassis 21 can adapt to varying terrain and working environments, and possesses excellent maneuverability even under the complex conditions of the pilot pit 9.

[0041] In an optional embodiment, the tunnel pilot support operation trolley suitable for the double-side wall pilot method also includes a controller (not shown in the figure), which is respectively connected to the multiple hydraulic lifting legs 32 and the multiple hydraulic lifting rods 101 by signals, and can monitor the lifting height of each hydraulic lifting leg 32 and each hydraulic lifting rod 101 in real time, and can control the lifting height of each hydraulic lifting leg 32 and each hydraulic lifting rod 101 respectively, thereby achieving lifting and leveling on demand.

[0042] In an optional embodiment, the tunnel pilot support trolley suitable for the double-sidewall pilot method further includes an inclination sensor (not shown) and a buzzer (not shown). Each crawler chassis 21 is equipped with one or more inclination sensors. The controller can communicate with the inclination sensor and buzzer via wireless signals. The buzzer is located in the inner structural frame 11. The monitoring results of the inclination sensor are transmitted to the controller in real time. When the controller detects that the inclination angle exceeds a preset threshold, it controls the buzzer to sound an alarm, prompting construction workers to evacuate the trolley and facilitating timely stabilization measures to prevent the trolley from tipping over.

[0043] In an alternative embodiment, reference Figure 1 As shown, the tunnel pilot pit support operation trolley suitable for the double-sidewall pilot pit method further includes a detachable frame 7 disposed above the top operating platform 4. The detachable frame 7 can be detachably fixed to the top operating platform 4 and can adapt to the shape of the upper portion of the pilot pit 9. During construction, if the arc-shaped high point of the top of the pilot pit 9 is too far away, the detachable frame 7 can be fixed below the corresponding position, thereby providing convenience for construction workers.

[0044] In an alternative embodiment, reference Figure 1 As shown, an outer operating platform 8 is provided on the outer side of the vehicle frame 1. Specifically, the outer side of the outer structural frame 12 can be welded and fixed to the outer side of the outer operating platform 8 according to actual needs. For example, some guide pits are irregular in shape. When a certain height position of the guide pit is far from the horizontal distance of the vehicle frame 1, the outer operating platform 8 can be welded at the corresponding position to facilitate construction. The outer operating platform 8 includes an operating platform body 81 and a reinforcement frame 82 connected up and down. The operating platform body 81 and the reinforcement frame 82 are both welded to the outer structural frame 12 to ensure structural stability. The specific structure of the operating platform body 81 is consistent with that of the flip work platform 5, and the repeated parts are not repeated.

[0045] In an optional embodiment, the fasteners include bolts (not shown) and nuts (not shown). Each tilting work platform 5 is provided with a first through-hole, and the side wall of the vehicle frame 1 is provided with a second through-hole. When the tilting work platform 5 is in contact with the side wall of the vehicle frame 1, the bolts can pass through the first and second through-holes. The nuts and bolts are threadedly connected to secure the tilting work platform 5 to the inside of the vehicle frame 1, maintaining the retracted state.

[0046] In an alternative embodiment, reference Figure 1 As shown, the tunnel pilot support operation trolley suitable for the double-side wall pilot method further includes an auxiliary frame 10 arranged on the inner side of the top of the inner structure frame 11. The auxiliary frame 10 is located in the middle part of the frame 1 and can be used to install a buzzer, hang a safety rope, etc.

[0047] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. The present disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and variations may be made without departing from the scope of the present disclosure. The scope of the present disclosure is limited solely by the appended claims. Thus, to the extent such modifications and variations fall within the scope of the claims and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. A tunnel pilot support operation trolley suitable for double-side wall pilot method, characterized in that: It includes a vehicle frame, multiple hydraulic lifting rods, a traveling mechanism, a supporting frame, fasteners, two flip working platforms, two fixing chains and a magnetic splash curtain; The upper end of each hydraulic lifting rod is fixedly connected to the vehicle frame, and the lower end is fixedly connected to the walking mechanism; The two turning working platforms are respectively arranged on both sides of the interior of the frame; One side of each of the flip work platforms is hinged to the vehicle frame so that the flip work platform can rotate relative to the vehicle frame, and the other side is connected to the vehicle frame via a corresponding fixed chain; When the flipping work platform is perpendicular to the side wall of the vehicle frame, the fixed chain is straightened obliquely, and the support frame is detachably arranged below the flipping work platform; The support frame includes a climbing frame and a plurality of hydraulic lifting legs arranged below the climbing frame; The plurality of hydraulic lifting rods and the plurality of hydraulic lifting legs can be raised and lowered synchronously; When the flip work platform is in contact with the side wall of the vehicle frame, the fastener locks and fixes the flip work platform to the side wall of the vehicle frame; The magnetic splash-proof curtain comprises a magnetic strip and a flexible curtain; the magnetic strip is coated on the upper end of the flexible curtain; The magnetic strip is magnetically adsorbed to any position of the frame; A top operating platform is provided on the top of the vehicle frame.

2. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1 is characterized in that: The vehicle frame comprises an inner structural frame and an outer structural frame of the same shape; A plurality of connecting rods are welded between the inner structural frame and the outer structural frame; The inner layer structural frame comprises a first trapezoidal structural segment and a first rectangular main body segment connected up and down; The outer structural frame comprises a second trapezoidal structural segment and a second rectangular main body segment connected up and down; The cross-sections of the first trapezoidal structural segment and the second trapezoidal structural segment are trapezoidal and tend to converge upwards; The top operating platform is fixed to the top of the second trapezoidal structure segment, and the width of the top operating platform is consistent with the width of the top of the second trapezoidal structure segment.

3. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 2, characterized in that: Also includes an articulated structure; The hinge structure connects the turnover working platform and the first rectangular main body section respectively.

4. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: The magnetic splash-proof curtain also includes a counterweight bar; The counterweight strip is covered on the lower end of the flexible curtain.

5. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: The walking mechanism includes crawler chassis respectively arranged on both sides below the frame.

6. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 5, characterized in that: Also includes a tilt sensor, controller and buzzer; Each of the crawler chassis is provided with the tilt sensor; The controller is respectively connected to the tilt sensor, the buzzer, the plurality of hydraulic lifting legs and the plurality of hydraulic lifting rods by signals; The controller can control the buzzer to alarm according to the monitoring result of the tilt sensor; The controller is capable of controlling the multiple hydraulic lifting legs and the multiple hydraulic lifting rods to rise and fall synchronously; The buzzer is arranged on the vehicle frame.

7. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: It also includes a detachable frame arranged above the top operating platform.

8. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: The turning operation platform includes a steel mesh layer and a steel frame layer arranged above and below.

9. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: An outer side operating platform is provided on the outer side of the frame; The outer operating platform includes an operating platform body and a reinforcement frame connected up and down.

10. The tunnel pilot pit support operation trolley suitable for the double-side wall pilot pit method according to claim 1, characterized in that: The fasteners include bolts and nuts; Each of the turning working platforms is provided with a first through hole; The side wall of the frame is provided with a second through hole; When the turnover work platform is in contact with the side wall of the vehicle frame, the bolt passes through the first through hole and the second through hole, and the nut is threadedly connected to the bolt.

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