Tunnel all-terrain caterpillar electric drive pipe trolley

Abstract

The utility model relates to a kind of tunnel machinery, specifically a kind of tunnel all-terrain track electric drive pipe trolley, including door-shaped hanger and the electric drive track symmetrically installed in the lower end of the door-shaped hanger, the door-shaped hanger is made of crossbeam and two vertical beams respectively connected the both ends of crossbeam, two vertical beams are symmetrically provided with telescopic slip assembly, the telescopic slip assembly includes fixed support fixed on vertical beam, horizontal threaded hole and vertical threaded hole communicated with the horizontal threaded hole are opened in the fixed support, the front end of threaded push rod is connected with telescopic slip through horizontal threaded hole, locking nut is also sleeved on the threaded push rod;The lower end of locking bolt is contacted with the threaded push rod through the vertical threaded hole.The utility model is simple in structure, easy to assemble and disassemble, time-saving and labor-saving, high efficiency, good safety reliability, meet the conveying and assembly demand of large-size long-distance pipeline in tunnel.

Description

Technical Field

[0001] This utility model relates to a tunnel machinery, specifically a tunnel all-terrain tracked electric drive tunnel management vehicle. Background Technology

[0002] The construction of large-diameter pipelines in steep tunnels is challenging due to the difficulty of welding. Ordinary electric drive wheels are not capable of climbing steep slopes and cannot be equipped with commonly used chain hoists for construction in steep tunnels. Therefore, a large amount of manpower and resources are required for the transportation and assembly of pipelines, and the process is also risky.

[0003] Electric-driven tracks are well-suited for navigating steep tunnels and are commonly used in tunnel construction.

[0004] For example, CN115370409 discloses a tunnel support device using membrane bag concrete combined with corrugated steel plates, which includes a tracked chassis, an arch base, a hydraulic cylinder, and a support beam. The tracked chassis moves along the tunnel as the corrugated steel plates are installed, driving the arch base to move. When the arch base moves to the bottom of the installed corrugated steel plates, the hydraulic cylinder pushes the support beam close to the corrugated steel plates, causing the slot to engage with the protrusions on the inner wall of the corrugated steel plates. This ensures a tight fit between the support beam and the corrugated steel plates, thereby improving the support effect of the support beam on the corrugated steel plates and thus enhancing the safety of tunnel construction. This solution is mainly used as a tunnel support device for the installation of corrugated steel plates on tunnel walls.

[0005] However, the following problems still exist in the handling and assembly of pipelines within tunnels: 1. For tunnels with obstacles (existing pipe piers) where vehicles cannot enter, how to allow the pipe transport trolley to overcome obstacles and move freely inside the tunnel is a technical problem that needs to be solved. 2. For large-sized long-distance pipelines (such as single-pipe laying diameter of φ1219), there are problems such as difficulty in loading and unloading, time and labor consumption, low operation efficiency and poor reliability.

[0006] 3. Due to the steep slope inside the tunnel, the pipeline transport trolley needs to maintain the reliability and stability of pipeline transportation during its operation to prevent the pipeline from slipping or being bumped. Summary of the Invention

[0007] The purpose of this utility model is to solve the above-mentioned technical problems and provide a tunnel all-terrain tracked electric-driven pipeline transport vehicle that is simple in structure, easy to load and unload, saves time and effort, is highly efficient, safe and reliable, and meets the needs of transporting and assembling large-size long-distance pipelines in tunnels.

[0008] The technical solution includes a portal frame and electrically driven tracks symmetrically installed at the lower end of the portal frame. The portal frame consists of a crossbeam and two vertical beams respectively connecting the two ends of the crossbeam. Telescopic slip assemblies are symmetrically provided on the two vertical beams. The telescopic slip assembly includes a fixed support fixed on the vertical beam. The fixed support has a through horizontal threaded hole and a vertical threaded hole communicating with the horizontal threaded hole. The front end of the threaded push rod passes through the horizontal threaded hole and connects with the telescopic slip. A locking nut is also fitted on the threaded push rod. The lower end of the locking bolt passes through the vertical threaded hole and contacts the threaded push rod.

[0009] The front end of the threaded push rod is hinged to the telescopic slip via a pivot, and the front section of the threaded push rod is also connected to the upper section of the telescopic slip via a compression spring.

[0010] There are two fixed supports side by side. The front end of the threaded push rod passes through the two fixed supports in sequence and connects to the telescopic slip. Two adjusting nuts are provided on the threaded push rod between the two fixed supports.

[0011] The fixed support is fixed to the vertical beam via a support plate.

[0012] The bottom center of the crossbeam is provided with a fixed clamp.

[0013] The bottom center of the crossbeam is connected to a fixed clamp via a universal joint.

[0014] The beam is also symmetrically equipped with lifting components on both sides, and the two lifting components are detachably connected by lifting straps.

[0015] The lifting device is an electric hoist.

[0016] The electric hoist has a hook at the top and hanging rings on both sides of the crossbeam, with the hook being hung in the hanging rings.

[0017] The electric hoist is equipped with a hook at its drive end, and the hook is connected to the end of the sling.

[0018] At least two portal-shaped hangers are installed on the electric drive track along the traveling direction, and adjacent portal-shaped hangers are connected by longitudinal beams.

[0019] Beneficial effects: The main structure adopts an electric drive track combined with a portal frame. The electric drive track is installed at the lower ends of both sides of the portal frame, allowing it to travel on both sides of obstacles (existing pipe piers). The portal frame has a central lower space for lifting pipes; its central installation maintains the stability of the pipe transport trolley and facilitates subsequent positioning and assembly of the pipes within the tunnel. At least multiple portal frames can be installed along the travel direction on the electric drive track, with corresponding assembly clamps to improve the stability and reliability of transportation.

[0020] 2. To address the potential for pipe slippage due to the steep slope within the tunnel, a symmetrical telescopic clamp assembly was designed. By adjusting the telescopic clamps, they extend symmetrically to clamp and lock onto the pipe, achieving rigid fixation. Furthermore, a fixed clamp is installed at the center of the bottom surface of the crossbeam to facilitate pipe alignment after hoisting and assembly after unloading. This, in conjunction with the telescopic clamps, enables multi-directional clamping and fixation of the pipe. Preferably, the fixed clamp is installed at the center of the bottom surface of the crossbeam via a universal joint. When the trolley carrying the pipe travels on uneven ground, the fixed clamp with the universal joint can automatically adjust its angle, reducing interference between the front and rear electric drive belts.

[0021] 3. On both sides of the crossbeam, there are also symmetrical lifting components for connecting lifting straps. By tightening the flexible lifting straps, an upward force is provided to press the pipe upward onto the fixed clamps. During operation, the continuous force is equivalent to providing secondary flexible fixation, which can absorb some of the vibration of the pipe during transportation and also prevent the pipe from slipping when the rigid fixation fails.

[0022] 4. The hoisting equipment uses an electric hoist, which has a lifting function. During the initial pipe hoisting stage, the hoisting strap can be used to lift the pipe to a position close to the fixed clamp. During the pipe unloading stage, after releasing the telescopic clamp, the hoisting strap can be used to lower the pipe, which can complete the pipe unloading operation conveniently and quickly, saving time and effort and improving efficiency.

[0023] 5. This utility model has a simple structure and is easy to operate. It can stably complete the operation of pipeline hoisting, transportation and unloading, and is especially suitable for large-size long-distance pipelines in steep tunnels. Attached Figure Description

[0024] Figure 1 This is a diagram illustrating the operation and management status of this utility model.

[0025] Figure 2 This is a structural diagram of the telescopic locking mechanism.

[0026] Figure 3 This is a diagram showing the unloading state of the pipe according to this utility model.

[0027] Figure 4 This is a diagram showing the operational status of multiple transport and management vehicles within a tunnel.

[0028] The components include: 1. Electric drive track; 2. Hanger; 2.1 Crossbeam; 2.2 Vertical and horizontal beams; 3. Fixed slips; 3.1 Universal joint; 4. Electric hoist; 5. Telescopic slip assembly; 5.1 Threaded push rod; 5.2 Fixed support; 5.3 Adjusting nut; 5.4 Locking bolt; 5.5 Compression spring; 5.6 Telescopic slips; 5.7 Rotary shaft; 5.8 Support plate; 5.9 Horizontal threaded hole; 5.10 Vertical threaded hole; 6. Fixed pipe support; 7. Pipe; 8. Lifting strap; 9. Hook; 10. Hanging ring; 11. Lifting hook; 12. Longitudinal beam. Detailed Implementation

[0029] The present invention will be further explained below with reference to the accompanying drawings: See Figures 1-3 This utility model includes a portal frame 2 and an electric drive track 1 symmetrically installed at the lower end of the portal frame. The electric drive track 1 drives the pipe 7 suspended on the portal frame 2 for transportation. This arrangement is not affected by obstacles in the tunnel and can operate continuously and stably.

[0030] The portal frame 2 consists of a horizontal beam 2-1 and two vertical beams 2-2 connecting the two ends of the horizontal beam 2-1. The bottom center of the horizontal beam 2-1 is connected to a fixed clamp 3 via a universal joint 3-1. The curved surface of the fixed clamp 3 faces downwards to fit against the pipe wall, facilitating centering and positioning during hoisting. When encountering uneven road surfaces or pipe vibration causing a shift in the center of gravity, the universal joint 3-1 allows for adaptive adjustment of the angle of the fixed clamp 3, reducing mutual interference between the front and rear electric drive belts. Telescopic clamp assemblies 5 are symmetrically provided on the two vertical beams 2-2. (See attached image.) Figure 2 The telescopic slip assembly 5 includes two fixed supports 5-2 fixed to the vertical beam 2-2 via a support plate 5-8. Each fixed support 5-2 has a through horizontal threaded hole 5-9 and a vertical threaded hole 5-10 communicating with the horizontal threaded hole 5-9. The front end of a threaded push rod 5-1 passes sequentially through the horizontal threaded holes 5-9 on the two fixed supports 5-2 and connects to the telescopic slip 5-6. Two adjusting nuts 5-3 are correspondingly provided on the threaded push rod 5-1 between the two fixed supports 5-6. The lower end of a locking bolt 5-4 passes through the vertical threaded hole 5-10 and contacts the threaded push rod 5-1. In this embodiment, by setting two fixed supports 5-2, along with two corresponding adjusting nuts 5-3 and a locking bolt 5-4, the supporting force and clamping force are improved, ensuring the stability and reliability of the pipeline 7 during transportation.

[0031] In another preferred embodiment, the front end of the threaded push rod 5-1 is hinged to the telescopic slip 5-6 via a pivot 5-7, and the front section of the threaded push rod 5-1 is also connected to the upper section of the telescopic slip 5-6 via a compression spring 5-5. The hinged connection, combined with the contraction force of the compression spring 5-5, allows the telescopic slip 5-6 to rotate around the pivot 5-7 at a certain angle to adapt to changes in the pipe diameter and hoisting position of different conveying pipes 7. At the same time, it keeps the telescopic slip 5-6 in a supported state, preventing it from flipping downwards due to gravity.

[0032] In another embodiment, symmetrical lifting components are provided on both sides of the crossbeam 2-1, and a lifting strap 8 is detachably connected between the two lifting components. Preferably, in this embodiment, the lifting component is an electric hoist 4, the upper end of the electric hoist 4 has a hook 9, and the two sides of the crossbeam 2-1 are provided with hanging rings 10, with the hook 9 correspondingly hung in the hanging rings 10.

[0033] The drive end of the electric hoist 4 is equipped with a hook 11, and the sling 8 passes under the pipe 7. Both ends are hooked to the hooks 11 of the left and right electric hoists 4 respectively. In this way, the left and right electric hoists 4 can synchronously drive the pipe 7 on the sling 8 to rise or fall via the hooks 11.

[0034] See Figure 4 In this embodiment, two portal-shaped hangers 2 are installed on the electric drive track 1 along the travel direction. Adjacent portal-shaped hangers 2 are connected by longitudinal beams 12. Depending on the implementation needs, more portal-shaped intermediate frames 2 can be installed to improve the lifting support force on the pipe 7. Depending on the length and weight of the transported pipe 7, one pipe 7 can be transported by one pipe transport trolley, or by two or more pipe transport trolleys, as long as the multiple pipe transport trolleys are controlled to maintain a consistent speed.

[0035] Work process: Lifting: The pipe 7 is lifted by a crane to the fixed pipe pier 6 at the tunnel entrance. The electric drive track 1 drives the pipe transport trolley, so that the gantry crane 2 is above the pipe 7. The electric hoists 4 on the left and right sides of the crossbeam 2-1 drive the hooks 11 to descend synchronously to a height lower than the pipe 7. The lifting straps 8 pass through the bottom of the pipe 7 and are hooked to the hooks 11 on both sides respectively. The electric hoists 4 drive the hooks 11 to lift the lifting straps 8 synchronously, lifting the pipe 7 until it hits the arc surface of the fixed clamp 3 and is adaptively aligned, keeping the lifting straps 8 in a lifted and taut state. By rotating the two adjusting nuts 5-3, the front end of the threaded push rod 5-1 is pushed out, which drives the telescopic clamps 5-6 to move towards the pipe and stick to the outer wall of the pipe 7 until the telescopic clamps 5-6 on both sides are correspondingly clamped on the pipe 7. The adjusting nuts 5-3 are further tightened, and the locking bolts 5-4 are tightened so that their lower ends tightly press against the threaded push rod 5-1 to maintain a rigid clamping state, thus completing the lifting and clamping process of the pipe transport trolley on the pipe. The hoisting and clamping process on multiple gantry cranes 2 on the same pipe transport trolley should be consistent. If multiple pipe transport trolleys need to transport the same pipe 7 simultaneously, their hoisting and clamping processes should also be consistent.

[0036] Unloading: After completing the above hoisting process, when the pipe transport trolley transports pipe 7 to the assembly position inside the tunnel, the locking bolts 5-4 are loosened in sequence, and the adjusting nut 5-3 is loosened to drive the threaded push rod 5-1 to retract, finally resolving the clamping state of the telescopic slip 5-6. At this time, the weight of pipe 7 is completely borne by the sling 8. The electric hoist 4 is controlled to drive the hook 11 to lower the sling 8 synchronously, finally lowering pipe 7 to the fixed pipe pier 6 to complete the transport. The sling 8 is then removed, and the pipe transport trolley is controlled to move away, so that the subsequent assembly of pipe 7 can be carried out.

Claims

1. A tunnel all-terrain tracked electric-drive transport and management trolley, comprising a gantry crane and electric-drive tracks symmetrically installed at the lower end of the gantry crane, characterized in that, The portal frame consists of a crossbeam and two vertical beams connecting the two ends of the crossbeam. The two vertical beams are symmetrically equipped with telescopic slip assemblies. Each telescopic slip assembly includes a fixed support fixed to the vertical beam. The fixed support has a through horizontal threaded hole and a vertical threaded hole communicating with the horizontal threaded hole. The front end of a threaded push rod passes through the horizontal threaded hole and connects to the telescopic slip. A locking nut is also fitted onto the threaded push rod. The lower end of a locking bolt passes through the vertical threaded hole and contacts the threaded push rod.

2. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 1, characterized in that, The front end of the threaded push rod is hinged to the telescopic slip via a pivot, and the front section of the threaded push rod is also connected to the upper section of the telescopic slip via a compression spring.

3. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 1, characterized in that, There are two fixed supports side by side. The front end of the threaded push rod passes through the two fixed supports in sequence and connects to the telescopic slip. Two adjusting nuts are provided on the threaded push rod between the two fixed supports.

4. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 1, characterized in that, The bottom center of the crossbeam is provided with a fixing clip.

5. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 4, characterized in that, The bottom center of the crossbeam is connected to a fixed clamp via a universal joint.

6. The tunnel all-terrain tracked electric drive transport and management trolley as described in any one of claims 1-5, characterized in that, The beam is also symmetrically equipped with lifting components on both sides, and the two lifting components are detachably connected by lifting straps.

7. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 6, characterized in that, The lifting device is an electric hoist.

8. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 7, characterized in that, The electric hoist has a hook at the top and hanging rings on both sides of the crossbeam, with the hook being hung in the hanging rings.

9. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 7 or 8, characterized in that, The electric hoist is equipped with a hook at its drive end, and the hook is connected to the end of the sling.

10. The tunnel all-terrain tracked electric drive transport and management trolley as described in claim 1, characterized in that, At least two portal-shaped hangers are installed on the electric drive track along the traveling direction, and adjacent portal-shaped hangers are connected by longitudinal beams.

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