Lifting appliance anti-collision device for heat exchange tube

Abstract

A lifting appliance anti-collision device for a heat exchange tube comprises a lifting appliance main beam, a left telescopic lifting arm and a right telescopic lifting arm, the left telescopic lifting arm and the right telescopic lifting arm are arranged at the two ends of the lifting appliance main beam, a plurality of lifting hooks are arranged at the bottoms of the lifting appliance main beam, the left telescopic lifting arm and the right telescopic lifting arm, and lifting ropes are connected to the lower portions of the lifting hooks. A left scanner and a right scanner are respectively arranged at one ends, far away from the lifting appliance main beam, of the left telescopic lifting arm and the right telescopic lifting arm; therefore, the hanging point of the long heat exchange tube is uniformly stressed, and the heat exchange tube is prevented from being bent and deformed; the heat exchange tube circulation process is complex, the hoisting operation frequency is high, and the risk that the heat exchange tube is damaged due to collision and crushing caused by misoperation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange tubes, and particularly to an anti-collision device for a sling of a heat exchange tube. Background Technique

[0002] As a green and high-quality structural material, titanium not only has many advantages such as low density, high-temperature creep resistance, high specific strength, and strong corrosion resistance, but also is non-toxic, non-magnetic, and has good biocompatibility. It is becoming an indispensable structural material and corrosion-resistant material in the fields of aerospace, shipbuilding, chemical industry, seawater desalination, medicine, superconducting materials, hydrogen storage by gas absorption, etc. At present, titanium heat exchange tubes are used instead of stainless steel tubes in the fields of seawater desalination, nuclear power plants, petrochemical industry, etc. Although the cost of titanium heat exchange tubes is higher than that of stainless steel tubes, their service life is longer and their stability is better.

[0003] After being prepared by a production line, the length of the titanium heat exchange tube can reach 20m. The heat exchange tubes prepared in the same batch need to be bundled, and a sling is connected by a crane and hoisted to other positions for ultrasonic testing, air pressure testing, water pressure testing, etc. The main function of the sling is to ensure uniform stress at the lifting points of the longer heat exchange tube and prevent the heat exchange tube from bending and deforming. The heat exchange tube has many transfer processes, and different processes are hoisted by different personnel. The hoisting operation frequency is high and the task is heavy. There is a risk of the heat exchange tube being bruised or damaged due to certain human operation errors. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an anti-collision device for a sling of a heat exchange tube.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An anti-collision device for a sling of a heat exchange tube, including a main sling beam, a left telescopic sling arm and a right telescopic sling arm arranged at both ends of the main sling beam. A plurality of hooks are arranged at the bottoms of the main sling beam, the left telescopic sling arm and the right telescopic sling arm, and a sling rope is connected below each of the plurality of hooks; a left scanner and a right scanner are respectively arranged at one ends of the left telescopic sling arm and the right telescopic sling arm away from the main sling beam.

[0007] In an embodiment, a sling ear is arranged on the main sling beam, and the sling ear is connected to a crane.

[0008] In an embodiment, the plurality of hooks are uniformly arranged at the bottoms of the main sling beam, the left telescopic sling arm and the right telescopic sling arm.

[0009] In an embodiment, laser ranging sensors are arranged at the bottoms of the main sling beam, the left telescopic sling arm and the right telescopic sling arm and between the two hooks.

[0010] In one embodiment, a left support column is connected below one end of the left telescopic boom away from the main beam of the spreader.

[0011] In one embodiment, a right support column is connected below one end of the right telescopic boom away from the main beam of the spreader.

[0012] In one embodiment, a control box is provided above the main beam of the spreader.

[0013] In one embodiment, the control box is electrically connected to the laser range finder, the left scanner, the right scanner, the left telescopic boom, and the right telescopic boom.

[0014] In one embodiment, the crane is electrically connected to the control box.

[0015] In one embodiment, there are two spreader lugs.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model includes a main beam of the spreader, a left telescopic boom and a right telescopic boom provided at both ends of the main beam of the spreader. A plurality of hooks are provided at the bottoms of the main beam of the spreader, the left telescopic boom, and the right telescopic boom, and suspension ropes are connected below each of the plurality of hooks; a left scanner and a right scanner are respectively provided at one ends of the left telescopic boom and the right telescopic boom away from the main beam of the spreader; thereby ensuring uniform force on the suspension points of the longer heat exchange tubes and preventing the heat exchange tubes from bending and deforming; the heat exchange tube transfer process is complex and the hoisting operation frequency is high, preventing the risk of the heat exchange tubes being bruised or crushed due to operation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0019] Figure 2 For the present utility model Figure 1 schematic diagram of the structure of the main beam of the spreader.

[0020] In the figure, 1, heat exchange tube; 5, control box; 10, main beam of the spreader; 11, left telescopic boom; 12, right telescopic boom; 13, left support column; 14, right support column; 15, laser range finder; 16, hook; 17, suspension rope; 18, left scanner; 19, right scanner; 20, spreader lug. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below with reference to the drawings and embodiments.

[0022] Embodiment 1

[0023] As Figure 1-2As shown in the figure, this embodiment includes a main hoist girder 10, a left telescopic boom 11 and a right telescopic boom 12 arranged at both ends of the main hoist girder 10; in this embodiment, the left telescopic boom 11 and the right telescopic boom 12 are arranged inside the main hoist girder 10; thus, according to the length of the heat exchange tube 1, the left telescopic boom 11 and the right telescopic boom 12 can extend and contract inside the main hoist girder 10, so as to ensure that both ends of the longer heat exchange tube 1 are evenly stressed during lifting and avoid bending deformation of the heat exchange tube 1.

[0024] A plurality of hooks 16 are provided at the bottoms of the main hoist girder 10, the left telescopic boom 11 and the right telescopic boom 12, and a lifting rope 17 is connected below each of the plurality of hooks 16; in this embodiment, the plurality of hooks 16 are evenly arranged at the bottoms of the main hoist girder 10, the left telescopic boom 11 and the right telescopic boom 12; thus, through the lifting rope 17, the heat exchange tube 1 can be hoisted up and down.

[0025] A laser distance sensor 15 is provided between the bottoms of the main hoist girder 10, the left telescopic boom 11 and the right telescopic boom 12 and between the two hooks 16; the laser distance sensor 15 is mainly for distance measurement and early warning. Its main principle is to emit laser pulses, measure the time elapsed from the emission to the reception of the laser return, and then calculate the target distance according to the speed of light and the time.

[0026] In this embodiment, the laser distance sensors 15 are arranged below the left telescopic boom 11, the main hoist girder 10 and the right telescopic boom 12 and arranged in a layout at a certain interval; when the main hoist girder 10 descends and the clearance height difference from the heat exchange tube 1 is 50 cm, the laser distance sensor 15 transmits a signal to the control box 5 (described in detail below), and the control box 5 issues an instruction to start the alarm system and starts alarm prompting; when the main hoist girder 10 continues to descend and the clearance height difference from the heat exchange tube 1 is 10 cm, the control box 5 issues an instruction to stop descending, and the main hoist girder 10 is forced to stop descending to avoid crushing the heat exchange tube 1.

[0027] A hoist lug 20 is provided on the main hoist girder 10, and the hoist lug 20 is connected to a crane; in this embodiment, there are two hoist lugs 20, and the two hoist lugs 20 are connected to the crane hook, so that the main hoist girder 10 rises and falls with the crane hook.

[0028] In this embodiment, the main hoist girder 10 is the main load-bearing cross beam, which is integrated with the hoist lug 20 and rises and falls with the crane hook.

[0029] At one end of both the left telescopic boom 11 and the right telescopic boom 12 that are far away from the spreader main beam 10, there are respectively a left scanner 18 and a right scanner 19; the left scanner 18 and the right scanner 19 can scan the distances between both ends of the heat exchange tube 1 and the obstacle, and the distances between the side surface of the entire length range of the heat exchange tube 1 and the obstacle; when the distances between the obstacle and the end part and the side surface of the heat exchange tube 1 are less than 30 cm, the control box 5 will emit a beeping alarm sound in time, and as the distance decreases, in the section from 30 cm to 10 cm, the frequency of the alarm sound gradually increases. When the distances between the obstacle and the end part and the side surface of the heat exchange tube 1 are less than 10 cm, the control box 5 forcibly controls the spreader main beam 10 to stop descending, so as to avoid the pipe material from scraping and colliding with the obstacle.

[0030] Below one end of the left telescopic boom 11 that is far away from the spreader main beam 10, there is a left support column 13 connected; below one end of the right telescopic boom 12 that is far away from the spreader main beam 10, there is a right support column 14 connected; thus, the left support column 13 and the right support column 14 support the entire spreader main beam 10 during the period when the spreader main beam 10 is stored on the ground; in this embodiment, the heights of the left support column 13 and the right support column 14 are higher than the height of the hook 16.

[0031] Above the spreader main beam 10, there is a control box 5, and the control box 5 is electrically connected to the laser distance sensor 15, the left scanner 18, the right scanner 19, the left telescopic boom 11, and the right telescopic boom 12; and the crane is electrically connected to the control box 5; in this embodiment, an anti-collision alarm system is provided on the control box 5.

[0032] The anti-collision method for the heat exchange tube spreader of the present utility model is as follows:

[0033] 1. The spreader ear 20 is connected to the crane hook, the spreader main beam 10 is lifted and displaced above the heat exchange tube 1, after the left scanner 18 and the right scanner 19 intelligently identify that the object below is the heat exchange tube 1, the anti-collision alarm system of the control box 5 is adjusted to the standby state; the left telescopic boom 11 and the right telescopic boom 12 adjust the extended lengths of the left telescopic boom 11 and the right telescopic boom 12 according to the length of the heat exchange tube 1 to ensure that both ends of the heat exchange tube 1 are evenly stressed during lifting.

[0034] 2. The crane operates, and the spreader main beam 10 slowly descends. When the clearance height difference from the heat exchange tube 1 is 50 cm, the laser distance sensor 15 transmits a signal to the control box 5, and the control box 5 issues a start command for the anti-collision alarm system to start the alarm prompt. Due to the need for the lifting height, the operator can continue to operate the spreader to descend. When the height difference from the heat exchange tube 1 is 10 cm, the control box 5 issues a stop descending command, and the spreader main beam 10 is forcibly stopped from descending; the operator connects the lifting rope 17 to the heat exchange tube 1 and hooks it into the hook 16; if the clearance height difference between the spreader main beam 10 and the heat exchange tube 1 is greater than 50 cm, the operator connects the lifting rope 17 to the heat exchange tube 1 and hooks it into the hook 16 for lifting, then the anti-collision alarm system does not start.

[0035] III. The crane operates, and the main beam 10 of the lifting appliance lifts and displaces the heat exchange tube 1 to the storage position. The heat exchange tube 1 descends slowly. The left scanner 18 and the right scanner 19 scan the distances between both ends of the heat exchange tube 1 and the obstacles, as well as the distances between the sides of the entire length range of the heat exchange tube 1 and the obstacles. When the distances between the obstacles and the ends and sides of the heat exchange tube 1 are less than 30 cm, the anti-collision alarm system of the control box 5 will be activated in a timely manner, emitting a beeping alarm sound. Moreover, as the distance decreases, in the range from 30 cm to 10 cm, the frequency of the alarm sound gradually increases. When the distances between the obstacles and the ends and sides of the heat exchange tube 1 are less than 10 cm, the lifting appliance is forced to stop descending to avoid scraping and collision between the pipe and the obstacles. The heat exchange tube 1 descends to the designated storage position, and the operator removes the lifting rope 17.

[0036] IV. After the main beam 10 of the lifting appliance completes the hoisting operation, the crane operates, and the main beam 10 of the lifting appliance displaces above the storage position. The left scanner 18 and the right scanner 19 can intelligently identify that the area below is the ground storage area, and the alarm system is in a silent state. The main beam 10 of the lifting appliance descends slowly and is stored on the ground, and the alarm system is not triggered.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the technical solutions of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A heat exchange tube hanger anti-collision device, characterized in that: The invention comprises a sling main beam (10), a left telescopic boom (11) and a right telescopic boom (12) arranged at both ends of the sling main beam (10); a plurality of hooks (16) are arranged at the bottom of the sling main beam (10), the left telescopic boom (11) and the right telescopic boom (12); and a sling rope (17) is connected below the plurality of hooks (16); and a left scanner (18) and a right scanner (19) are respectively arranged at one end of the left telescopic boom (11) and the right telescopic boom (12) away from the sling main beam (10).

2. The heat exchange tube hanger anti-collision device according to claim 1, characterized in that: The sling main beam (10) is provided with a sling lifting lug (20), and the sling lifting lug (20) is connected to a crane.

3. The heat exchange tube hanger anti-collision device according to claim 2, characterized in that: A plurality of the hooks (16) are evenly arranged at the bottom of the main beam (10) of the sling, the left telescopic boom (11), and the right telescopic boom (12).

4. The heat exchange tube hanger anti-collision device according to claim 3, characterized in that: Laser distance measuring sensors (15) are provided on the main beam (10) of the hoist, the bottoms of the left telescopic boom (11) and the right telescopic boom (12), and between the two hooks (16).

5. The heat exchange tube hanger anti-collision device according to claim 4, characterized in that: A left supporting column (13) is connected below one end of the left telescopic boom (11) away from the main beam (10) of the sling.

6. The heat exchange tube hanger anti-collision device according to claim 5, characterized in that: A right support column (14) is connected below one end of the right telescopic boom (12) away from the main beam (10) of the sling.

7. The heat exchange tube hanger anti-collision device according to claim 6, characterized in that: A control box (5) is provided above the sling main beam (10).

8. The heat exchange tube hanger anti-collision device according to claim 7, characterized in that: The control box (5) is electrically connected to the laser distance measuring sensor (15), the left scanner (18), the right scanner (19), the left telescopic boom (11), and the right telescopic boom (12).

9. The heat exchange tube hanger anti-collision device according to claim 8, characterized in that: The crane is electrically connected to the control box (5).

10. The heat exchange tube hanger anti-collision device according to claim 9, characterized in that: The number of the lifting device lifting ears (20) is two.

Images