Tunnel all-terrain crawler belt electric drive pipe conveying trolley

Abstract

The invention relates to tunnel machinery, in particular to a tunnel all-terrain crawler belt electric drive pipe conveying trolley which comprises a door-shaped hanging bracket and electric drive crawler belts symmetrically installed at the lower end of the door-shaped hanging bracket, the door-shaped hanging bracket is composed of a cross beam and two vertical beams connected with the two ends of the cross beam respectively, and telescopic slip assemblies are symmetrically arranged on the two vertical beams. The telescopic slip assembly comprises a fixed support fixed to the vertical beam, a through horizontal threaded hole and a vertical threaded hole communicated with the horizontal threaded hole are formed in the fixed support, the front end of a threaded push rod penetrates through the horizontal threaded hole to be connected with a telescopic slip, and the threaded push rod is further sleeved with a locking nut. And the lower end of a locking bolt penetrates through the vertical threaded hole and is in contact with the threaded push rod. The device is simple in structure, easy to assemble and disassemble, time-saving, labor-saving, high in efficiency, good in safety and reliability and capable of meeting the conveying and assembling requirements of the large-size long-distance pipeline in the tunnel.

Description

Technical Field

[0001] This invention relates to a tunnel machinery, specifically a tunnel all-terrain tracked electric-drive tunnel pipe transport 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 (such as single-pipe laying diameter of φ1219) long-distance pipelines, 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 invention is to solve the above-mentioned technical problems and provide a tunnel all-terrain tracked electric-drive pipeline transport vehicle that is simple in structure, easy to load and unload, time-saving and labor-saving, highly efficient, safe and reliable, and meets the transportation and assembly needs of 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 attached to 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 invention 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 operational status of the present invention.

[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 the present invention.

[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 The present invention 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. The two vertical beams 2-2 are symmetrically equipped with telescopic clamp assemblies 5. (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 caterpillar electric drive pipe trolley, comprising a portal frame and an electric drive caterpillar symmetrically mounted at the lower end of the portal frame, characterized in that, The door-shaped hanger is composed of a crossbeam and two vertical beams connecting two ends of the crossbeam respectively, and a telescopic slip assembly is symmetrically arranged on the two vertical beams, the telescopic slip assembly comprises a fixed support fixed on the vertical beam, a horizontal threaded hole penetrating through the fixed support and a vertical threaded hole communicating with the horizontal threaded hole are formed on the fixed support, a front end of a threaded push rod is connected with the telescopic slip through the horizontal threaded hole, and a locking nut is further sleeved on the threaded push rod; a lower end of a locking bolt is in contact with the threaded push rod through the vertical threaded hole.

2. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 1, wherein, The front end of the threaded push rod is hinged with the telescopic slip through a rotating shaft, and the front end of the threaded push rod is further connected with an upper segment of the telescopic slip through a compression spring.

3. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 1, wherein, The fixed support has two parallel fixed supports, the front end of the threaded push rod is connected with the telescopic slip through the two fixed supports in sequence, and two adjusting nuts are correspondingly arranged on the threaded push rod between the two fixed supports.

4. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 1, wherein, A fixed slip is arranged at the center of the bottom surface of the crossbeam.

5. The tunnel all-terrain tracked electrically-driven pipe trolley as claimed in claim 4, wherein, The fixed slip is connected with the crossbeam through a universal joint.

6. The tunnel all-terrain tracked electrically-driven pipe trolley according to any one of claims 1-5, characterized in that, Two lifting members are symmetrically arranged on the two sides of the crossbeam, and a lifting belt is detachably connected between the two lifting members.

7. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 6, wherein, The lifting member is an electric hoist.

8. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 7, wherein, The upper end of the electric hoist is provided with a hook, the two sides of the crossbeam are provided with a hanging ring, and the hook is hung in the hanging ring.

9. The tunnel all-terrain tracked electrically-driven pipe trolley according to claim 7 or 8, characterized in that, A lifting hook is arranged on the driving end of the electric hoist, and the end of the lifting belt is connected with the lifting hook.

10. The tunnel all-terrain tracked electrically-driven pipe trolley of claim 1, wherein, At least two door-shaped hangers are arranged on the electric drive crawler in the walking direction, and the adjacent two door-shaped hangers are connected through a longitudinal beam.

Images