A special electric hanger for spiral steel pipe

Abstract

The utility model discloses a special electric hoist for spiral steel pipes, comprising a moving beam, hook head assemblies are symmetrically installed at both ends of the moving beam, the hook head assemblies are installed on the moving beam through electric telescopic assemblies, and the electric telescopic assemblies can drive the hook head assemblies to move relative to or opposite to each other; two pipe holding mechanisms are symmetrically installed at the bottom of the moving beam, and the pipe holding mechanisms are used to press the surface of the spiral steel pipe; the utility model drives the hook head assemblies at both ends of the moving beam to move relative to or opposite to each other through the electric telescopic assemblies, so as to clamp spiral pipes of different lengths, and at the same time, the rollers of the pipe holding assemblies are pressed against the surface of the spiral steel pipe, so as to ensure the stability of the steel pipe clamping and avoid falling during the lifting process.

Description

Technical Field

[0001] The utility model belongs to the technical field of spiral steel pipe hoisting, and in particular relates to a special electric hoist for spiral steel pipes. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Spiral pipes are mainly used in tap water projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction, and have the following functions: 1. For liquid transportation: water supply, drainage, sewage treatment projects, mud transportation, and ocean water transportation; 2. For gas transportation: coal gas, steam, and liquefied petroleum gas; 3. For structural use: as piling pipes, bridges; docks, roads, building structure pipes, ocean piling pipes, etc.

[0004] The surface of spiral steel pipes needs to be treated with rust removal, polishing and anti-corrosion in combination with different uses and customer requirements. At present, the pipes with anti-corrosion layer on the market are mainly transported by beam-type slings, lifting belts and lifting chains. In actual application, two people are required to cooperate in the lifting of 12M pipes, and there are problems such as breakage of slings and chains, uncontrollable dumping due to large swing amplitude, collision safety risks and low transport efficiency. As in the prior art, Chinese utility model patent CN217148262U discloses a steel pipe hoist, including an I-shaped steel body, a first end plate, a second end plate, a first hook assembly, a second hook assembly, a main body reinforcement rib and a lifting ring; the device has the following problems: 1. It is necessary to manually install the steel pipe on the hook assembly, and the work efficiency is low; 2. When lifting steel pipes of different lengths, the distance between the two hook assemblies cannot be automatically adjusted according to the length of the steel pipe; 3. The hook in the hook assembly is connected to the lifting chain, and there is a risk of the chain breaking and a large swing amplitude; 4. The end of the hook is relatively sharp, which will scratch the inner wall of the steel pipe during the lifting process. When the wall of the steel pipe is thin, it will also cause the steel pipe to deform, affecting the quality of the steel pipe. Utility Model Content

[0005] The utility model aims to provide a special electric hoist for spiral steel pipes, which can realize automatic lifting of spiral steel pipes, ensure the stability of steel pipe clamping during lifting, and avoid scratches on the steel pipes by the hooks.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the utility model provides a special electric hoist for spiral steel pipes, including a moving beam, with hook head assemblies symmetrically installed at both ends of the moving beam, and the hook head assemblies are installed on the moving beam through electric telescopic assemblies, and the electric telescopic assemblies can drive the hook head assemblies to move relative to or away from each other; two pipe holding mechanisms are symmetrically installed at the bottom of the moving beam, and the pipe holding mechanisms are used to press the surface of the spiral steel pipe.

[0008] As a further technical solution, the electric telescopic assembly includes an L-shaped movable telescopic arm, one end of which extends into the interior of the movable beam, and the other end is fixedly connected to the hook head assembly.

[0009] As a further technical solution, a rack is provided on the L-shaped movable telescopic arm, and the rack cooperates with a gear. The gear is driven to rotate by a motor, thereby driving the L-shaped movable telescopic arm to move in the beam.

[0010] As a further technical solution, a plurality of rollers are arranged at the lower part of the L-shaped movable telescopic arm located in the movable beam, rollers are installed at both ends of the rollers, and the rollers move on tracks arranged inside the beam.

[0011] As a further technical solution, the hook head assembly includes an L-shaped hook head, one end of which is fixedly connected to the L-shaped movable telescopic arm, and the other end of the L-shaped hook head is tapered and extends into the spiral steel pipe.

[0012] As a further technical solution, a pipe end detection proximity switch is arranged on the vertical surface of the L-shaped hook head, and a pipe wall detection proximity switch is arranged on the horizontal surface of the L-shaped hook head.

[0013] As a further technical solution, the pipe-carrying mechanism is arranged at the bottom of the moving beam, and the pipe-carrying structure includes two symmetrically arranged pipe-carrying guide wheels.

[0014] As a further technical solution, the pipe guide wheel is connected to a rotating shaft, the rotating shaft is rotatably connected to a base, and the base is fixed to the bottom of the moving beam.

[0015] As a further technical solution, it also includes an electric control component, which includes a PLC controller, and the PLC controller is electrically connected to the electric telescopic component.

[0016] As a further technical solution, a plurality of lifting rings are provided on the upper surface of the movable beam.

[0017] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0018] The utility model provides a special electric hoist for spiral steel pipes, which drives the hook head components at both ends of the moving beam to move relative or opposite to each other through the electric telescopic component, so as to clamp the spiral pipes of different lengths. At the same time, the rollers of the pipe assembly are pressed against the surface of the spiral steel pipe to ensure the stability of the steel pipe clamping and avoid falling during the lifting process.

[0019] The utility model provides a special electric hanger for spiral steel pipes. The hook head of the hook head assembly is set into an L shape. When clamping the spiral steel pipe, the hook head is extended into the interior of the spiral steel pipe for clamping, thereby increasing the clamping area of ​​the steel pipe and causing no damage to the wall surface of the steel pipe.

[0020] The utility model provides a special electric hoist for spiral steel pipes, which is equipped with multiple detection switches and electric control components. The hoist can be extended and retracted, and the position can be adjusted through a handheld remote control. The corresponding indicator lights are designed to cooperate with the crane to complete the pipe lifting control. The entire process can be operated by electric remote control, which reduces the labor intensity and safety operation risks of traditional manual hooking, provides a new type of hoisting tool for the reverse transportation and transmission of spiral steel pipes, and provides a new type of lifting tool for the efficient reverse transportation of steel pipes, while reducing and saving the reverse transportation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a schematic diagram of the overall structure of the electric hanger for spiral steel pipe of the utility model;

[0023] Figure 2 It is a side view of the electric hanger for spiral steel pipe of the utility model;

[0024] Figure 3 The utility model is an operation flow chart of the electric hanger for spiral steel pipe when in use.

[0025] The schematic diagram is for illustrative purposes only;

[0026] Among them, 1. Moving beam; 101. Lifting ring; 102. Track; 2. Hook assembly; 201. L-shaped hook; 202. Pipe wall detection proximity switch; 203. Pipe end detection proximity switch; 3. Electric telescopic assembly; 301. L-shaped moving telescopic arm; 302. Rack; 303. Motor; 304. Gear; 305. Roller; 306. Roller; 4. Pipe placement mechanism; 401. Pipe placement guide wheel; 402. Rotating shaft; 403. Detection induction switch; 404. Base; 5. Electronic control assembly; 501. Warning indicator light; 6. Spiral steel pipe. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] Example 1

[0029] In a typical implementation of the present invention, Figure 1 and Figure 2 As shown, a special electric hoist for spiral steel pipes is provided, including a moving beam 1, hook head assemblies 2 are symmetrically installed at both ends of the moving beam 1, the hook head assemblies 2 are installed on the moving beam 1 through electric telescopic assemblies 3, and the electric telescopic assemblies can drive the hook head assemblies 2 to move relative to or opposite to each other; two pipe holding mechanisms 4 are symmetrically installed at the bottom of the moving beam 1, and the pipe holding mechanisms 4 are used to press the surface of the spiral steel pipe 6.

[0030] In this embodiment 1, the movable beam 1 plays a supporting role for the entire hoist. The movable beam 1 is a hollow box structure. A plurality of lifting rings 101 are provided on the upper surface of the movable beam 1. The lifting rings are hooked by other lifting devices to drive the entire hoist to move; the electric telescopic assembly 3 includes an L-shaped movable telescopic arm 301, one end of the L-shaped movable telescopic arm 301 extends into the interior of the movable beam 1, and the other end is fixedly connected to the hook head assembly 2. A rack 302 is provided on the L-shaped movable telescopic arm 301, and the rack 302 cooperates with the gear 304. The gear 304 is driven to rotate by the motor 303, thereby driving the L-shaped movable telescopic arm 301 to move in the beam, which can meet the lifting requirements of spiral steel pipes of different lengths.

[0031] In this embodiment, a plurality of rollers 306 are provided at the lower part of the L-shaped movable telescopic arm located in the movable beam 1, and rollers 305 are installed at both ends of the rollers 306, and the rollers 305 move on the track 102 provided inside the beam. The provided rollers and rollers can support the telescopic arm to the left and right, and realize the left and right telescopic guiding function.

[0032] In this embodiment, the hook assembly 2 includes an L-shaped hook 201, one end of which is fixedly connected to the L-shaped movable telescopic arm 301, and the other end of the L-shaped hook 201 is tapered and extends into the spiral steel pipe 6. Further, the tapered head of the L-shaped hook 201 can be set to a semicircular arc shape, and polyurethane is set on the surface of the L-shaped hook to contact the pipe contact surface to avoid damage to the pipe surface due to hoisting points.

[0033] As a further technical solution, travel limit switches are designed and installed at the left and right travel positions of the hoist rack. A pipe end detection proximity switch 203 is arranged on the vertical surface of the L-shaped hook head 201, which is used to detect when the hook head effectively lifts the inner side of the pipe mouth, and to cut off the power supply of the hoist to avoid danger when the hoist is operated in the air. A pipe wall detection proximity switch 202 is arranged on the horizontal surface of the L-shaped hook head 201, which is used to detect whether the wall of the pipe and the hook are overlapped and fitted in place, and the signal is fed back to the electronic control component according to the program and the corresponding color indication is given to provide guidance to the operator for the feedback signal of the crane lifting command.

[0034] In this embodiment, the pipe-carrying mechanism 4 is arranged at the bottom of the moving beam 1, and the pipe-carrying structure 4 includes two symmetrically arranged pipe-carrying guide wheels 401, the pipe-carrying guide wheels 401 are connected to the rotating shaft 402, the rotating shaft 402 is rotatably connected to the base 404, the base 404 is fixed at the bottom of the moving beam 1, and a detection induction switch 403 is arranged next to the base 404. During the lifting process, the surface of the spiral steel pipe is pressed by the two arranged pipe-carrying guide wheels to prevent the lifting device from falling on the pipe, and the detection induction switch 406 is arranged to facilitate the left and right positioning and movement of the lifting device.

[0035] In this embodiment, the electric hoist dedicated to spiral steel pipes further includes an electric control component 5, wherein the electric control component 5 includes a PLC controller, and the PLC controller is electrically connected to the electric telescopic component.

[0036] Specifically, the electric control component 5 is a programmable controller (PLC) to control the output signal, which is mainly used for remote control operation command input signal, spreader movement, extension, pipe mouth hook position detection, corresponding spreader action corresponding output indicator light, alarm light signal output, various command issuing mechanisms, control the inverter to realize the motor forward and reverse rotation, and realize the left and right extension function within the travel range through the motor forward and reverse extension structure. The extension process stroke and hook in place detection trigger the PLC input signal, and the control component controls the output warning indicator light 501 according to the design program to guide the operation of the spreader operation trajectory and position.

[0037] In this embodiment, the movable beam adopts an I-shaped structure as the main beam, and the two sides are welded by splicing and assembling steel plates, and guide rollers are symmetrically designed and installed on both sides of the main beam. The main beam and the rollers are assembled into an integrated structure. The power source for the operation of the main beam is the straight rack embedded with bolts on the top of the main beam and assembled with the main beam as a whole. The main beam is integrally mounted in a rectangular box frame, and square guide rails are installed on both sides of the box frame to provide support together with the main beam wheels. A fixed motor and a reducer are installed on the outside of the rectangular box beam structure, and transmission is realized through gears and the rack embedded on the top of the main beam, which drives the main beam to run left and right under the support of the rollers, thereby realizing the left and right extension of the hoist.

[0038] The power supply of the entire spreader is borrowed from the crane power supply through the spring cable reel, and is quickly connected to the spreader distribution box through the IP66 waterproof quick plug to achieve common power supply with the crane. When the crane is powered, the spreader is powered as well. This mode can achieve power-off protection for the spreader at the same time when the crane fails or the hoisting fails and the crane is powered off.

[0039] The working principle of the special electric hoist for spiral steel pipes provided in this embodiment is: the hook head components at both ends of the moving beam are driven by the electric telescopic component to move relative or opposite to each other, so as to clamp spiral pipes of different lengths. At the same time, the rollers of the pipe assembly are pressed against the surface of the spiral steel pipe to ensure the stability of the steel pipe clamping.

[0040] The specific operation process during use is as follows Figure 3 As shown, the following steps are included:

[0041] 1. Preparation: Double hook lifting sling can be visually in a balanced state;

[0042] 2. Test: Operate the spreader to extend or retract to the left or right until the corresponding color (red) light turns on, and extend or retract to the outermost side (maximum travel);

[0043] 3. Operation I: Slowly lift the lifting device and place it on the surface of the pipe to be lifted. The corresponding pipe indicator light will light up (yellow);

[0044] 4. Operation II: Visually check that the spreader is in the center and the pipe end is within the travel range of the hook head (the spreader can be fine-tuned by using the pipe guide wheel to move left and right in coordination with the crane);

[0045] 5. Confirm the test hoist: operate the hoist to lock the hook head (red light off), lift it slightly until the side pipe end face induction switch at the hook head detects that it is in place and the hoist is powered off;

[0046] 6. Lifting operation: The hoisting equipment control power supply is cut off, the flashing red light of the distribution box comes on and the hoisting equipment starts running.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A special electric hanger for spiral steel pipes, characterized in that: It includes a moving beam, with hook head assemblies symmetrically installed at both ends of the moving beam. The hook head assemblies are installed on the moving beam through electric telescopic assemblies, and the electric telescopic assemblies can drive the hook head assemblies to move relative to or away from each other; two pipe holding mechanisms are symmetrically installed at the bottom of the moving beam, and the pipe holding mechanisms are used to tighten the surface of the spiral steel pipe.

2. The electric hanger for spiral steel pipe according to claim 1, characterized in that: The electric telescopic assembly comprises an L-shaped movable telescopic arm, one end of which extends into the interior of the movable beam, and the other end is fixedly connected to the hook head assembly.

3. The electric hanger for spiral steel pipe according to claim 2, characterized in that: The L-shaped movable telescopic arm is provided with a rack, and the rack cooperates with a gear. The gear is driven to rotate by a motor, thereby driving the L-shaped movable telescopic arm to move in the beam.

4. The electric hanger for spiral steel pipe according to claim 2, characterized in that: A plurality of rollers are arranged at the lower part of the partial L-shaped movable telescopic arm located in the movable beam, rollers are installed at both ends of the rollers, and the rollers move on tracks arranged inside the beam.

5. The electric hanger for spiral steel pipe according to claim 2, characterized in that: The hook head assembly comprises an L-shaped hook head, one end of which is fixedly connected to the L-shaped movable telescopic arm, and the other end of which is tapered and extends into the spiral steel pipe.

6. The electric hanger for spiral steel pipe according to claim 5, characterized in that: A pipe end detection proximity switch is arranged on the vertical surface of the L-shaped hook head, and a pipe wall detection proximity switch is arranged on the horizontal surface of the L-shaped hook head.

7. The electric hanger for spiral steel pipe according to claim 1, characterized in that: The pipe holding mechanism is arranged at the bottom of the moving beam, and the pipe holding mechanism comprises two symmetrically arranged pipe holding guide wheels.

8. The electric hanger for spiral steel pipe according to claim 7, characterized in that: The pipe guide wheel is connected to a rotating shaft, the rotating shaft is rotatably connected to a base, and the base is fixed to the bottom of the moving beam.

9. The electric hanger for spiral steel pipe according to claim 1, characterized in that: It also includes an electric control component, which includes a PLC controller, and the PLC controller is electrically connected to the electric telescopic component.

10. The electric hanger for spiral steel pipe according to claim 1, characterized in that: The upper surface of the moving beam is provided with a plurality of lifting rings.

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