Self-walking multifunctional trolley for round-section long tunnel

Abstract

The utility model discloses a self-walking multifunctional trolley for a long tunnel with a circular section. The self-walking multifunctional trolley comprises a construction operation platform system, an anti-tipping system, a channel system, a self-walking system and a safety rail system, the construction operation platform system comprises a portal frame system, left and right upper-layer operation platforms and left and right lower-layer operation platforms; the anti-rollover system comprises a supporting rod, an adjusting screw rod and a roller; the self-walking system comprises two main driving wheels, two driving motors and two driven wheels, and the two main driving wheels are connected with the two driving motors through a gearbox and are connected with the front supporting legs of the portal respectively. The two driven wheels are respectively connected with the door frame rear supporting legs; and the main driving wheel drives the gantry and the driven wheel to integrally walk and move. According to the self-walking multifunctional trolley, construction operations such as concrete curing, grouting, defect eliminating and coating in a tunnel can be achieved, and the function requirement that a construction vehicle passes through from the lower portion can be met; the anti-rollover system can prevent the trolley from rollover, and the trolley can walk along the tunnel in a balanced mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of design and manufacturing of water conservancy and hydropower construction engineering machinery, in particular to the technical field of design of equipment for maintenance, grouting and defect elimination of long tunnels in water conservancy and hydropower construction projects, and particularly to a self-propelled multifunctional trolley for circular long tunnels. Background Art

[0002] In water conservancy and hydropower projects, after the secondary lining of a water transfer tunnel is completed, processes such as concrete curing, grouting, defect elimination, and concrete exterior coating and protection are required. Due to water transfer operation requirements, most water transfer tunnels are designed with a circular cross-section. Circular tunnels offer advantages such as good flow patterns, favorable stress conditions, and high water flow capacity. During construction in circular tunnels, a construction platform is required to ensure safety and vehicle access.

[0003] In previous tunnel construction projects, scaffolding or track-based trolleys were used as construction platforms for grouting, curing, and other tasks. However, in long, circular tunnels, scaffolding as a construction platform is difficult to stably support on the curved surface, resulting in poor self-stabilization and significant safety risks. The scaffolding requires repeated erection and dismantling, and it also cannot accommodate vehicle traffic through the tunnel. For example, constructing a track-based trolley in a long, circular tunnel is complex, requiring the addition of rebar to the already poured concrete, damaging the concrete surface and increasing subsequent repair costs. Furthermore, track installation and dismantling are complex.

[0004] Therefore, in order to meet the needs of concrete maintenance, grouting and defect elimination construction of long circular cross-section tunnels, it is necessary to design a self-propelled multifunctional trolley for long circular cross-section tunnels. The trolley can not only meet the functional, self-stabilization and safety requirements of the construction platform, but also meet the requirements of vehicles passing under the construction platform in the tunnel. At the same time, it avoids repeated erection and dismantling of the construction platform, and there is no need to lay special tracks. The construction platform realizes two-way self-propelled function on the circular concrete surface, thereby improving construction efficiency. Summary of the Invention

[0005] The utility model discloses a self-propelled multifunctional trolley for circular cross-section long tunnels to address the deficiencies of the existing technology. The utility model aims to provide a self-propelled multifunctional trolley for circular tunnel construction, including a construction platform system, an anti-tilt system, a channel system, a self-propelled system, and a safety railing system.

[0006] The utility model is achieved through the following technical solutions:

[0007] A self-propelled multifunctional trolley for a long circular-section tunnel, characterized in that the self-propelled multifunctional trolley comprises a construction platform system, an anti-tilt support system, a channel system, a self-propelled system and a safety railing system;

[0008] The construction platform system is a steel truss platform system arranged along the tunnel axis. It is composed of multiple sets of gantries arranged in parallel and connected by connecting beams. The gantries support the two-story construction operation platform.

[0009] The anti-tilt support system includes at least four sets of anti-tilt support assemblies arranged on both sides of the front and rear end portal frames. The anti-tilt support assemblies are composed of support rods, adjustment screws and rollers. One end of the support rod is fixed to the lateral column of the portal frame, and the other end is adjustable and telescopically connected to the adjustment screw. One end of the adjustment screw is connected to the support rod by a thread, and the other end is provided with a roller that moves along the axial direction of the tunnel and is adjusted by the adjustment screw to contact the rolling support with the tunnel wall.

[0010] The self-propelled system consists of two sets of main drive wheels and their drive motors, and two sets of driven wheels, which are arranged at the bottom of the front and rear end masts; the two main drive wheels are connected to the two drive motors through a gearbox, and at the same time, are respectively connected to the front legs of the mast; the two driven wheels are respectively connected to the rear legs of the mast; the main drive wheels drive the mast and the driven wheels to move as a whole.

[0011] Furthermore, the trolley's front and rear portal frames are each equipped with two lower longitudinal beams, each connected to a steel leg. Each steel leg adopts a bent structure and is supported by four wheel bearings. The wheels, the steel legs, and the portal system are relatively free to rotate, and each wheel contacts the curved concrete surface of the tunnel in a radial direction. This structure can effectively transfer the entire load of the trolley to the wheels, which in turn transfer it to the tunnel concrete surface, effectively converting the vertical force of the trolley's overall load into a radial force.

[0012] The construction platform system further includes a top operating platform and two operating platforms respectively arranged on both sides; the top operating platform is arranged on the top surface of the portal frame, and the two operating platforms on both sides are respectively supported and fixed on the side surfaces of the portal frame columns.

[0013] The top-level operating platform is assembled from a steel mesh, a top-level oblique beam, a top-level main beam, and a top-level longitudinal beam to form a platform; the lateral gantry is assembled from gantry columns, gantry diagonal braces, lateral gantry upper longitudinal beams, lateral gantry oblique beams, and lateral gantry lower longitudinal beams to form the left and right upper operating platforms and the left and right lower operating platforms; the left and right upper operating platforms and the left and right lower operating platforms are respectively fixed to the left and right columns of the gantry with bolts.

[0014] The two-layer operating platforms on both sides are composed of cantilever beams and steel mesh. One end of the cantilever beam is fixed to the lateral support column of the portal system with bolts, and a steel mesh is laid on the upper part of the cantilever beam to form an operating platform.

[0015] The passage system further includes four sets of side ladders and ladder guardrails arranged at the front, rear, left and right; personnel are used to enter each operating platform through the ladder; and guardrails are installed on the airside of each ladder.

[0016] The safety railing system further includes guardrails on the front and rear sides of the top operating platform, guardrails on the front and rear sides of the upper operating platform, and guardrails on the front and rear sides of the lower operating platform; the safety railings are fixedly installed on the airside of each operating platform.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Compared with scaffolding platforms and rail-type trolleys, the self-propelled multifunctional trolley of the utility model has the advantages of easy operation, low labor intensity, high construction efficiency, safety and reliability.

[0019] (2) The self-propelled multifunctional trolley is divided into multiple parts and assembled with bolts. The maximum single weight does not exceed 500kg. No large lifting equipment is required, and it is easy to assemble, maintain and dismantle in the cave.

[0020] (3) The self-propelled multifunctional trolley can not only realize the functions of a construction platform such as concrete curing, grouting, defect elimination, and painting in the tunnel, but also meet the requirements of construction vehicles passing through the bottom of the trolley.

[0021] (4) The self-propelled multifunctional trolley travels along the lined concrete arc surface, realizing the conversion of the overall vertical force of the trolley into the radial force of the tunnel. The travel system is controlled by the motor and gearbox, which can achieve the purpose of forward and backward bidirectional driving and meet the anti-skid function requirements.

[0022] (5) It can be personalized designed according to the specific tunnel structure size. The self-propelled multifunctional trolley has a simple structure, is easy to process, and can be installed and disassembled quickly.

[0023] (6) Four anti-rollover adjustable support rods are arranged on both sides of the self-propelled multifunctional trolley. By adjusting the support rods, the rollers at the end of the support rods are ensured to be in contact with the concrete surface during the movement and suspension of the trolley, so that the trolley can move in a balanced manner along the tunnel and prevent the trolley from rolling over.

[0024] (7) In the construction of long tunnels, compared with scaffolding construction platforms and rail-type trolleys, the multifunctional trolley of the utility model does not need to be repeatedly installed and disassembled, and does not require the installation of special tracks. It can achieve safe self-propelled movement under working conditions such as uphill, downhill, and turning, effectively reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the composition of the self-propelled multifunctional trolley system of the utility model;

[0026] Figure 2 This is a front view of the self-propelled multifunctional trolley system of the utility model;

[0027] Figure 3 This is a top view of the self-propelled multifunctional trolley, Figure 2 Schematic diagram of the middle AA section;

[0028] Figure 4 This is a side view of a self-propelled multifunctional trolley, Figure 2 Schematic diagram of the middle BB section;

[0029] Figure 5 This is an enlarged diagram of the adjusting screw, that is, Figure 2 Enlarged schematic diagram of middle C part;

[0030] Figure 6 is an enlarged schematic diagram of the outrigger, i.e. Figure 2 Enlarged schematic diagram of the middle D part;

[0031] Figure 7 This is an enlarged schematic diagram of the main drive wheel system, Figure 4 Enlarged schematic diagram of the middle H part;

[0032] Figure 8 This is an enlarged schematic diagram of the driven wheel system, that is, Figure 4 Enlarged schematic diagram of the middle G section.

[0033] In the figure, 1-construction platform system, 2-anti-rollover support system, 3-channel system, 4-self-propelled system, 5-safety railing system, 6-top operating platform, 7-gantry column, 8-gantry diagonal brace, 9-upper operating platform, 10-adjustable support, 11-lower operating platform, 12-driving wheel, 13-ladder, 14-safety railing, 15-steel mesh, 16-top inclined beam, 17-top main beam, 18-top longitudinal beam, 19-lateral gantry upper longitudinal beam, 2 0-lateral gantry oblique beam, 21-lateral gantry lower longitudinal beam, 22-main drive wheel system, 23-driven wheel system, 24-support rod, 25-adjusting screw, 26-pin shaft, 27-pulley, 28-fixed support, 29-hinge block, 30-main drive leg support, 31-gearbox, 32-main drive wheel, 33-main drive wheel pin shaft, 34-main drive motor, 35-driven wheel, 36-driven wheel leg support, E-tunnel concrete pouring, F-travel direction of the multi-functional trolley. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0035] Combined with the attached drawings.

[0036] As shown in the figure, the self-propelled multifunctional trolley for a long circular tunnel of the present invention includes a construction platform system, an anti-rollover support system, a channel system, a self-propelled system and a safety railing system.

[0037] The construction platform system includes: a gantry system, left and right upper operating platforms and left and right lower operating platforms; the left and right upper operating platforms and the left and right lower operating platforms are respectively fixed to the left and right side columns of the gantry with bolts;

[0038] The anti-tilt support system includes a support rod, an adjusting screw rod, and a roller. One end of the support rod is fixed to the lateral column of the portal frame, and the other end of the support rod is embedded in the adjusting screw rod. One end of the adjusting screw rod is connected to the support rod through a threaded buckle, and the other end of the adjusting screw rod is connected to the roller. The roller rotates with the adjusting screw rod to adjust the distance between the roller and the concrete, ensuring that the roller and the concrete roll and glide smoothly.

[0039] The passage system includes four ladders and guardrails. Personnel enter the lower and upper operating platforms through the ladders. Guardrails are installed on the side of the ladders facing the air.

[0040] The self-propelled system includes two main drive wheels, two drive motors, and two driven wheels. The two main drive wheels are connected to the two drive motors through a gearbox and are also connected to the front legs of the gantry. The two driven wheels are connected to the rear legs of the gantry. The main drive wheels drive the gantry and the driven wheels to move as a whole.

[0041] The safety railing system includes guardrails on the front and rear sides of the top operating platform, guardrails on the front and rear sides of the upper operating platform, and guardrails on the front and rear sides of the lower operating platform; the safety railings are fixedly installed on the airside of the operating platforms on each floor.

[0042] The construction platform system utilizes a top operating platform and two sets of lateral gantries to form the main portal. The upper and lower operating platforms are then fixed to the sides of the portal columns, ultimately forming three layers of construction platforms: the top operating platform, the upper operating platform, and the lower operating platform. The top operating platform is assembled from a steel mesh, top-level diagonal beams, top-level main crossbeams, and top-level longitudinal beams. The lateral gantries are assembled from portal columns, diagonal braces, upper longitudinal beams, diagonal beams, and lower longitudinal beams.

[0043] The operating platform consists of a cantilever beam and a steel mesh. One end of the cantilever beam is fixed to the lateral support column of the gantry system with bolts, and a steel mesh is laid on the upper part of the cantilever beam to form an operating platform.

[0044] The self-propelled system consists of two main drive wheels and two driven wheels. Four steel legs are set at the bottom of the gantry. The two front steel legs are connected to the two main drive wheels respectively, and the two rear steel legs are connected to the two driven wheels respectively. The main drive wheels are powered by the drive motor and the gearbox to rotate and move. The movement of the main drive wheels drives the movement of the driven wheels, which in turn drives the movement of the gantry system as a whole. The two lower longitudinal beams of the front and rear end gantry of the trolley are respectively connected to four steel structure steel legs. The steel structure steel legs adopt a bent structure design and are then connected to the wheel bearing support through four steel legs. Relative free rotation is formed between the wheels, steel legs and gantry system. The wheels are in radial and vertical contact with the curved concrete surface of the tunnel, effectively transferring the entire load of the trolley to the wheels, which in turn transfers it to the concrete surface of the tunnel, achieving the effect of converting the vertical force of the overall load of the trolley into radial force.

[0045] The anti-rollover support system is composed of four groups of support rods, adjusting screw rods, pins, pulleys and fixed supports. Four supports are arranged on the left and right sides of the trolley respectively. The ends of the support rods are fixedly connected to the door frame columns with bolts.

[0046] The following is an example of a water diversion tunnel construction project. The clearance dimensions of the water diversion tunnel after secondary concrete lining are as follows: The bottom width is 2.5m. A self-propelled multifunctional trolley for long circular tunnels was developed. The trolley dimensions are: 6.86m × 7.05m × 5.5m = length × width × height.

[0047] As shown in the figure, the self-propelled multifunctional trolley for circular-section long tunnels is used for post-lining maintenance, grouting, defect elimination, and painting operations in water supply tunnels. The trolley primarily consists of a construction platform system 1, an anti-tilt support system 2, a channel system 3, a self-propelled system 4, and a safety railing system 5. The construction platform system 1 comprises a top operating platform 6, gantry columns 7, gantry braces 8, an upper operating platform 9, and a lower operating platform 11; the anti-tilt support system 2 comprises a support rod 24, an adjustment screw 25, a pin 26, a pulley 27, and a fixed brace 28; the channel system 3 comprises four ladders 13; the self-propelled system 4 comprises two main drive wheel systems 22 and two driven wheel systems 23; and the safety railing system 5 comprises two sets of safety railings 14.

[0048] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the construction platform system 1 mainly uses a top operating platform 6 and two sets of lateral gantries to form a main gantry. Then, an upper operating platform 9 and a lower operating platform 11 are respectively fixed to the side of the gantry column 7, ultimately forming a three-layer construction operating platform, namely the top operating platform 6, the upper operating platform 9, and the lower operating platform 11. The top operating platform 6 is assembled from a steel mesh 15, a top inclined beam 16, a top main cross beam 17, and a top longitudinal beam 18. The lateral gantries are assembled from the gantry columns 7, the gantry diagonal braces 8, the lateral gantry upper longitudinal beam 19, the lateral gantry diagonal beam 20, and the lateral gantry lower longitudinal beam 21.

[0049] like Figure 1 、 Figure 2 、 Figure 5 As shown, the anti-rollover support system 2 is composed of four groups of support rods 24, adjusting screw rods 25, pin shafts 26, pulleys 27, and fixed supports 28. Four supports are arranged on the left and right sides of the trolley respectively. The ends of the support rods 24 are fixedly connected with the door frame columns 7 with bolts. By adjusting the adjusting screw rods 25, it is ensured that the pulleys 27 are in contact with the concrete surface supports, so as to ensure that the multifunctional trolley moves along the concrete surface as a whole, so as to achieve the purpose of preventing the multifunctional trolley from rolling over.

[0050] like Figure 1 、 Figure 2 、 Figure 4 As shown, the passage system 3 is fixed to the front, back, left, and right sides of the construction platform system 1 and connects to the three operating platforms (i.e., the top operating platform 6, the upper operating platform 9, and the lower operating platform 11), forming a passageway for personnel to access each operating platform. The safety railing system 5 is installed on the front and back sides of the three operating platforms (i.e., the top operating platform 6, the upper operating platform 9, and the lower operating platform 11) facing the air, providing safety protection for the operating platforms facing the air.

[0051] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the self-propelled system 4 is fixedly connected to the lower longitudinal beam 21 of the lateral gantry through the upper portions of two sets of main drive wheel systems 22 and two sets of driven wheel systems 23, respectively, ensuring that the self-propelled system 4 and the construction platform system 1 form an integral structure. The main drive wheel system 22 is assembled from an articulated block 29, a main drive leg support 30, a gearbox 31, a main drive wheel 32, a main drive wheel pin 33, and a main drive motor 34. The driven wheel system 23 is assembled from a driven wheel 35 and a driven wheel leg support 36. When energized, the main drive motor 34 drives the main drive wheel system 22, which in turn drives the driven wheel system 23 through the construction platform system 1, ultimately achieving the effect of the self-propelled multifunctional trolley moving as a whole.

Claims

1. A self-propelled multifunctional trolley for long circular tunnels, characterized by: The self-propelled multifunctional trolley includes a construction platform system, an anti-tilt support system, a channel system, a self-propelled system and a safety railing system; The construction platform system is a steel truss platform system arranged along the tunnel axis. It is composed of multiple sets of gantries arranged in parallel and connected by connecting beams. The gantries support the two-story construction operation platform. The anti-tilt support system includes at least four sets of anti-tilt support assemblies arranged on both sides of the front and rear end portal frames. The anti-tilt support assemblies are composed of support rods, adjustment screws and rollers. One end of the support rod is fixed to the lateral column of the portal frame, and the other end is adjustable and telescopically connected to the adjustment screw. One end of the adjustment screw is connected to the support rod by a thread, and the other end is provided with a roller that moves along the axial direction of the tunnel and is adjusted by the adjustment screw to contact the rolling support with the tunnel wall. The self-propelled system consists of two sets of main drive wheels and their drive motors, and two sets of driven wheels, which are arranged at the bottom of the front and rear end masts; the two main drive wheels are connected to the two drive motors through a gearbox, and at the same time, are respectively connected to the front legs of the mast; the two driven wheels are respectively connected to the rear legs of the mast; the main drive wheels drive the mast and the driven wheels to move as a whole.

2. The self-propelled multifunctional trolley for long circular tunnels according to claim 1, characterized in that: The front and rear end portals of the trolley are each provided with two lower longitudinal beams, each of which is connected to a steel support leg. Each steel support leg adopts a bent structure, and the four steel support legs are connected to the wheel bearing support. The wheels, the steel support legs and the portal system are relatively free to rotate, and each wheel contacts the curved concrete surface of the tunnel vertically in the radial direction.

3. The self-propelled multifunctional trolley for long circular tunnels according to claim 1, characterized in that: The construction platform system includes a top operating platform and two operating platforms respectively arranged on both sides; the top operating platform is arranged on the top surface of the portal frame, and the two operating platforms on both sides are respectively supported and fixed on the side surfaces of the portal frame columns.

4. The self-propelled multifunctional trolley for long circular tunnels according to claim 3, characterized in that: The top operating platform is assembled from steel mesh, top inclined beams, top main beams and top longitudinal beams to form a platform; the lateral gantry is assembled from gantry columns, gantry diagonal braces, lateral gantry upper longitudinal beams, lateral gantry diagonal beams and lateral gantry lower longitudinal beams to form the left and right upper operating platforms and the left and right lower operating platforms; the left and right upper operating platforms and the left and right lower operating platforms are fixed to the left and right columns of the gantry with bolts respectively.

5. The self-propelled multifunctional trolley for long circular tunnels according to claim 1, characterized in that: The two-layer operating platforms on both sides are composed of cantilever beams and steel mesh. One end of the cantilever beam is fixed to the lateral support column of the gantry system with bolts, and a steel mesh is laid on the upper part of the cantilever beam to form an operating platform.

6. The self-propelled multifunctional trolley for long circular tunnels according to claim 1, characterized in that: The passage system includes four sets of side ladders and ladder guardrails arranged at the front, rear, left and right; personnel are used to enter each operating platform through the ladder; and guardrails are installed on the airside of each ladder.

7. The self-propelled multifunctional trolley for long circular tunnels according to claim 1, characterized in that: The safety railing system includes guardrails on the front and rear sides of the top operating platform, guardrails on the front and rear sides of the upper operating platform, and guardrails on the front and rear sides of the lower operating platform; the safety railings are fixedly installed on the airside of each operating platform.

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