An adaptive mobile lift apparatus for high altitude pipeline installation

Abstract

The application discloses a kind of adaptive mobile lifting equipment for high-altitude pipeline installation, in particular to high-altitude pipeline installation field, including lifting frame, the outer surface of one side of lifting frame is provided with bracket, and bracket is slidably connected with lifting frame, the inside of lifting frame is fixedly installed, and is adjusted by bracket along lifting frame lifting;Base frame is fixedly installed at the bottom end of lifting frame, control box is fixedly installed at the top end of base frame, two groups of rudders and fixed universal wheels are installed at the bottom end of base frame four corners, and two groups of rudders and fixed universal wheels are diagonally arranged.The four wheels are extended to lift the equipment, so that the rudders with brake intervention are separated from the ground, and the equipment is physically switched from the electric walking state to the full manpower non-resistance pushing state.The independent buffer spring suspension diagonal arrangement structure of rudder ensures that the driving wheel does not hang in the air and lose power on the uneven ground.

Description

Technical Field

[0001] This invention relates to the field of high-altitude pipeline installation, and more specifically, to an adaptive mobile lifting device for high-altitude pipeline installation. Background Technology

[0002] As building volumes increase, electromechanical installation is evolving towards "modularization and pipeline combination." Assembling heavy pipelines at heights of tens of meters demands that ground lifting equipment possess extremely high mobility and positioning accuracy, as well as absolute safety and reliability. Traditional construction methods largely rely on scaffolding and manual hoists, resulting in extremely low efficiency and frequent violations. Using large forklifts or scissor lifts is limited in confined spaces due to their large size, and they are not specifically designed for pipeline positioning. Currently, the closest existing technology on the market is the "ordinary pipeline lifting machine." Its structure typically includes: a rigid chassis: ordinary polyurethane casters are mounted at the four corners of the base, and two fixed orthogonal axis drive wheels (without suspension and shock absorption) are mounted in the middle of the base; a winch lifting system: an ordinary geared motor is fixed on the base, driving a drum to wind up and unwind a steel wire rope. The top of the steel wire rope is connected to a lifting boom via pulleys. The boom slides along the main column, and descent is achieved solely by the weight of the boom and the pipeline itself.

[0003] Disadvantages of existing technology:

[0004] The chassis has extremely poor adaptability (suspended problem): Because the rigid chassis cannot deform, when there are undulations or potholes on the construction site, the rigidly fixed drive wheels are very likely to leave the ground instantly (suspended), resulting in loss of driving force, equipment deviation or even jamming.

[0005] The contradiction between movement and high-precision fine-tuning (brake interference problem): In the final stage of pipeline flange connection, two workers usually need to manually push and pull the equipment to make fine adjustments of a few millimeters to align the holes. However, existing drive motors are equipped with electromagnetic brakes for parking safety, which causes the equipment to be locked tightly when the power is off or when manual fine-tuning is required, making it impossible to move.

[0006] Serious safety hazard (slack wire rope and falling object problem): The existing equipment relies solely on gravity for descent. When dust obstructs the guide rails or excessive friction occurs, the lifting frame may not actually descend, but the winch will continue to rotate and release the rope. At this time, the wire rope loses tension and becomes tangled and knotted inside the drum. If a worker attempts to shake it to untangle it, the lifting frame will instantly plummet to the bottom with the heavy pipeline (until the tangled wire rope is straightened), which could easily break the wire rope and cause serious injury or death.

[0007] Center of gravity shift and tilting: The original equipment cabinet was installed at the rear, resulting in a front-light and rear-heavy structure. When unloaded or under light load, the front end is prone to tilting.

[0008] The conflict between equipment width and narrow working space (side support interference problem): To prevent lateral tipping when lifting heavy objects at height, existing equipment typically has outward-extending casters on both sides of the chassis as auxiliary supports. This structure results in an excessively large and wide overall footprint, making it difficult to move through narrow construction passages such as those with dense pipelines or corridors. Frequent disassembly and reassembly of the side support arms are often necessary, severely impacting on-site construction efficiency and flexibility.

[0009] Poor protection of key moving parts and chassis (dust and jamming issues): Construction sites are harsh environments with extremely high levels of dust and frequent spills of sand, gravel, and industrial waste. Existing equipment typically has its chassis wheels, lifting guide rails, and hoisting gear mechanisms exposed, lacking effective physical protection and dustproof design. This easily leads to dust and foreign objects being drawn into the mechanical structure, causing gear wear, guide rail jamming, or caster wheel seizure, severely reducing the reliability and service life of the equipment in actual construction site environments. Summary of the Invention

[0010] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide an adaptive mobile lifting device for high-altitude pipeline installation. By extending and retracting the four wheels, the device is lifted, thereby causing the steering wheel, which provides driving force but has brake interference, to leave the ground. This physically switches the device from an electrically driven state to a fully manually propelled state without resistance. The independent buffer spring suspension diagonally arranged structure of the steering wheel ensures that the drive wheel will not lose power when suspended in the air on uneven construction site ground.

[0011] To achieve the above objectives, the present invention provides the following technical solution: an adaptive mobile lifting device for high-altitude pipeline installation, comprising a lifting frame, a bracket provided on one outer surface of the lifting frame, and the bracket being slidably connected to the lifting frame, and a bracket fixedly installed inside the lifting frame, which can be adjusted by raising and lowering the bracket along the lifting frame;

[0012] The base frame is fixedly installed at the bottom of the lifting frame. A control box is fixedly installed at the top of the base frame. Two sets of steering wheels and fixed casters are installed at the four corners of the bottom of the base frame. The two sets of steering wheels and fixed casters are arranged diagonally. Adjustable casters are installed on both sides of the lifting frame. The adjustable casters can be adjusted up and down along the base frame.

[0013] Preferably, the rope winding and unwinding assembly includes a servo motor fixedly installed on the outer surface of the lifting frame, and a drum is fixedly connected to one end of the output shaft of the servo motor.

[0014] Preferably, the outer surface of the drum is wound with a steel wire rope, and a pulley is fixedly installed at the top of the bracket, with one end of the steel wire rope passing through the pulley.

[0015] Preferably, a first gear is fixedly mounted on the top of the steering wheel, and a mounting plate is provided on the top of the first gear, and the first gear is rotatably connected to the mounting plate.

[0016] Preferably, a servo driver is fixedly mounted on one side of the bottom of the mounting plate, and a second gear is fixedly connected to one end of the output shaft of the servo driver, and the second gear meshes with the first gear.

[0017] Preferably, a motor is mounted on one side of the steering wheel, and the output end of the motor is fixedly connected to one side of the steering wheel.

[0018] Preferably, a lead screw is inserted into one side of the adjustable caster wheel, and the adjustable caster wheel is raised and lowered via the lead screw and the base frame. A hand crank is fixedly installed at the top of the lead screw.

[0019] Preferably, auxiliary frames are installed on both sides of the lifting frame, the top of the auxiliary frame is hinged to the outer surface of the lifting frame, the bottom of the auxiliary frame is equipped with auxiliary wheels, and a telescopic rod is connected between the auxiliary frame and the lifting frame, with both ends of the telescopic rod being hinged to the outer surfaces of the lifting frame and the auxiliary frame, respectively.

[0020] The technical effects and advantages of this invention are as follows:

[0021] 1. The present invention has retractable lifting casters installed at the four corners. By extending and retracting these four casters, the equipment is lifted up, thereby lifting the steering wheel, which provides driving force but has brake interference, off the ground. This physically switches the equipment from electric walking mode to fully manual, unresisting pushing mode. The independent buffer spring suspension diagonally arranged structure of the steering wheel ensures that the drive wheel will not be suspended in the air and lose power on uneven construction site ground.

[0022] 2. This invention combines a rope pressing roller with a tension detection rocker arm, which is linked with an electrical limit switch to block the rope releasing action from both physical and electrical dimensions the instant the wire rope loses tension.

[0023] 3. This invention resolves the contradiction between high-precision docking and electric brake equipment: Since pipe flange alignment requires worker observation and constant fine-tuning, electric cranks suffer from blind spots and operational lag. This invention uses lifting casters to physically lift the chassis, isolating the brake resistance of the drive motor, instantly transforming the hundreds-of-kilograms-weight equipment into a lightweight "handcart," greatly improving the success rate of alignment.

[0024] 4. This invention avoids falling object accidents and ensures construction safety: It introduces a linkage mechanism between a tension detection rocker arm and a micro switch. In the event of lifting jamming, an emergency stop is triggered within milliseconds of the wire rope loosening, controlling the incorrect rope release within a few millimeters and completely severing the safety hazard link of the free fall impact of the heavy object after the jamming is eliminated. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the combined application structure of the lifting equipment of the present invention.

[0026] Figure 2 This is a schematic diagram of the lifting device structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the steering wheel structure of the present invention.

[0028] Figure 4 This is a schematic diagram of the auxiliary rod structure of the present invention.

[0029] The attached figures are labeled as follows: 1. Lifting frame; 2. Bracket; 3. Base frame; 31. Control box; 32. Hoisting rope retraction assembly; 33. Adjustable caster wheel; 34. Steering wheel; 341. Fixed caster wheel; 35. First gear; 36. Mounting plate; 37. Servo driver; 38. Second gear; 39. Motor; 4. Auxiliary frame; 41. Telescopic rod; 42. Auxiliary wheel. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] according to Figure 1-4 The diagram shows an adaptive mobile lifting device for high-altitude pipeline installation, comprising a lifting frame 1, a bracket 2 provided on one outer surface of the lifting frame 1, the bracket 2 being slidably connected to the lifting frame 1, and a 32 fixedly installed inside the lifting frame 1, through which the bracket 2 is adjusted up and down along the lifting frame 1.

[0032] The base frame 3 is fixedly installed at the bottom of the lifting frame 1. The top of the base frame 3 is fixedly installed with a control box 31. Two sets of steering wheels 34 and fixed casters 341 are installed at the four corners of the bottom of the base frame 3. The two sets of steering wheels 34 and fixed casters 341 are arranged diagonally. Adjustable casters 33 are installed on both sides of the lifting frame 1. The adjustable casters 33 can be adjusted up and down along the base frame 3.

[0033] Furthermore, the hoisting rope winding assembly 32 includes a servo motor fixedly installed on the outer surface of the lifting frame 1. One end of the output shaft of the servo motor is fixedly connected to a drum. A steel wire rope is wound on the outer surface of the drum. A pulley is fixedly installed at the top of the bracket 2, and one end of the steel wire rope passes through the pulley.

[0034] Furthermore, a first gear 35 is fixedly mounted on the top of the steering wheel 34. A mounting plate 36 is provided on the top of the first gear 35, and the first gear 35 is rotatably connected to the mounting plate 36. At the position where the wire rope leaves the tangent of the drum, a set of damping rope-pressing rollers, pressed by torsion springs, is provided to firmly press the wire rope on the drum. Even if the external wire rope is completely slack, the rope loops on the drum will not unravel or become disordered. When the wire rope is led out to the side and upward, it must pass over a tension detection guide wheel. This guide wheel is mounted on a lever rocker arm with a return spring, and a micro-motion limit switch or proximity switch corresponds to the rear end of the rocker arm.

[0035] Furthermore, a servo driver 37 is fixedly installed on one side of the bottom end of the mounting plate 36, and a second gear 38 is fixedly connected to one end of the output shaft of the servo driver 37. The second gear 38 meshes with the first gear 35. A motor 39 is installed on one side of the steering wheel 34, and the output end of the motor 39 is fixedly connected to one side of the steering wheel 34. The two steering wheel assemblies are connected to the base frame 3 through a guide shaft and a high-strength buffer spring to form an independent suspension mechanism. When encountering a pothole, the spring presses the steering wheel down to the ground; when encountering a bump, the spring is compressed. This scheme ensures that no matter how uneven the ground is, the steering wheel 34 that provides power always remains in contact with the ground.

[0036] Furthermore, a lead screw is inserted into one side of the adjustable caster wheel 33, and the adjustable caster wheel 33 is adjusted in height and height by means of the lead screw and the base frame 3. A hand crank is fixedly installed at the top of the lead screw. When the four adjustable casters are retracted, the equipment is supported by two steering wheels 34 and two diagonally fixed casters 341. The servo drive 37 drives the steering wheels to rotate.

[0037] Furthermore, auxiliary frames 4 are installed on both sides of the lifting frame 1. The top of the auxiliary frame 4 is hinged to the outer surface of the lifting frame 1, and auxiliary wheels 42 are installed at the bottom of the auxiliary frame 4. A telescopic rod 41 is connected between the auxiliary frame 4 and the lifting frame 1, and the two ends of the telescopic rod 41 are respectively hinged to the outer surfaces of the lifting frame 1 and the auxiliary frame 4. The auxiliary frame 4 and the auxiliary wheels at the bottom provide assistance.

[0038] Working principle of this invention:

[0039] Refer to the instruction manual appendix Figure 1-4 Adaptive suspension design: The two steering wheel assemblies are connected to the base frame 3 through guide shafts and high-strength buffer springs to form an independent suspension mechanism. When encountering potholes, the springs press the steering wheels down to the ground; when encountering bumps, the springs are compressed. This solution ensures that no matter how uneven the ground is, the steering wheel 34 that provides power always keeps in contact with the ground, solving the problem of "wheels getting stuck in the air".

[0040] Manually pushed fine-tuning switching mechanism: The adjustable casters 33 located at the four corners are mainly composed of extended lead screws, hand cranks and casters.

[0041] Electric walking mode: The four adjustable casters are retracted, and the equipment is supported by two steering wheels 34 and two diagonally fixed casters 341. The servo drive 37 drives the steering wheels to rotate.

[0042] Manual fine-tuning mode: During the final millimeter-level docking, the operator lowers the four adjustable casters 33. After the lead screw extends downwards and touches the ground, its continued extension lifts the entire heavy base 3. At this point, the two steering wheels 34 with motor brakes are completely suspended off the ground as the base frame 3 rises. The equipment is now supported only by the four unresisted adjustable casters 33, allowing two workers to easily push the equipment, completely avoiding the resistance interference of the motor brakes.

[0043] Power system: A high-power servo motor is used instead of an ordinary asynchronous motor, and a planetary reducer is used to directly drive the drum, which can achieve millimeter-level lifting and positioning accuracy.

[0044] Anti-loosening and alarm blocking mechanism:

[0045] Mechanical damping clamping: At the point where the wire rope leaves the tangent of the drum, a set of damping rope clamping rollers (similar to rollers) clamped by torsion springs are installed to firmly press the wire rope on the drum. Even if the external wire rope is completely slack, the rope loops on the drum will not unravel or become disordered.

[0046] Electrical tension detection interlock: When the wire rope is led out to the side and upward, it must pass over a tension detection guide wheel. This guide wheel is mounted on a lever rocker arm with a return spring, and a micro limit switch or proximity switch corresponds to the rear end of the rocker arm.

[0047] Action Logic: When the system issues a descent command, the drive motor reverses to drive the drum to release the rope, and then detects whether the lifting arm is jammed. If the lifting arm is not jammed and the load descends normally, the wire rope is pulled taut by the load, overcoming the rocker arm spring force to press down the rocker arm, causing the rocker arm to press against the micro switch and output a high-level signal 1. The system determines that the working condition is normal and continues to operate. If the lifting arm is jammed, although the drum releases the rope normally, the load cannot descend with it. The wire rope instantly loses tension and slackens. The rocker arm automatically bounces up under the action of the reset spring and disengages from the micro switch. The switch signal becomes a low-level 0. After the controller detects this signal change in real time, it immediately forcibly cuts off the lifting servo enable, locks the brake motor, and simultaneously starts the buzzer to issue a fault alarm.

Claims

1. An adaptive mobile lifting device for high-altitude pipeline installation, characterized in that, include: A lifting frame (1) is provided with a bracket (2) on one outer surface of the lifting frame (1), and the bracket (2) is slidably connected to the lifting frame (1). A (32) is fixedly installed inside the lifting frame (1), and the bracket (2) is adjusted up and down along the lifting frame (1) by the (32). The base frame (3) is fixedly installed at the bottom of the lifting frame (1). The top of the base frame (3) is fixedly installed with a control box (31). Two sets of steering wheels (34) and fixed casters (341) are installed at the four corners of the bottom of the base frame (3). The two sets of steering wheels (34) and fixed casters (341) are arranged diagonally. Adjustable casters (33) are installed on both sides of the lifting frame (1). The adjustable casters (33) can be adjusted up and down along the base frame (3).

2. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 1, characterized in that: The rope winding and unwinding assembly (32) includes a servo motor fixedly installed on the outer surface of the lifting frame (1), and a drum is fixedly connected to one end of the output shaft of the servo motor.

3. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 2, characterized in that: The outer surface of the drum is wound with a steel wire rope, and a pulley is fixedly installed at the top of the bracket (2), with one end of the steel wire rope passing through the pulley.

4. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 1, characterized in that: The top of the steering wheel (34) is fixedly mounted with a first gear (35), and the top of the first gear (35) is provided with a mounting plate (36), and the first gear (35) is rotatably connected to the mounting plate (36).

5. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 4, characterized in that: A servo driver (37) is fixedly installed on one side of the bottom end of the mounting plate (36), and a second gear (38) is fixedly connected to one end of the output shaft of the servo driver (37), and the second gear (38) meshes with the first gear (35).

6. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 5, characterized in that: A motor (39) is mounted on one side of the steering wheel (34), and the output end of the motor (39) is fixedly connected to one side of the steering wheel (34).

7. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 1, characterized in that: A lead screw is inserted into one side of the adjustable caster wheel (33), and the adjustable caster wheel (33) is raised and lowered by the lead screw and the base frame (3). A hand crank is fixedly installed at the top of the lead screw.

8. The adaptive mobile lifting device for high-altitude pipeline installation according to claim 7, characterized in that: The lifting frame (1) is equipped with auxiliary frames (4) on both sides. The top of the auxiliary frame (4) is hinged to the outer surface of the lifting frame (1). The bottom of the auxiliary frame (4) is equipped with auxiliary wheels (42). The auxiliary frame (4) and the lifting frame (1) are connected by a telescopic rod (41), and the two ends of the telescopic rod (41) are respectively hinged to the outer surfaces of the lifting frame (1) and the auxiliary frame (4).

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