CN107304030B - Special hoisting device for replacing heat exchange tube of transverse tube cooler and application method thereof - Google Patents
Special hoisting device for replacing heat exchange tube of transverse tube cooler and application method thereof Download PDFInfo
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- CN107304030B CN107304030B CN201610241965.9A CN201610241965A CN107304030B CN 107304030 B CN107304030 B CN 107304030B CN 201610241965 A CN201610241965 A CN 201610241965A CN 107304030 B CN107304030 B CN 107304030B
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- mast
- heat exchange
- hoisting
- herringbone
- cooler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/10—Applications of braking or detent devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
- B66D2700/021—Hauling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/02—Hoists or accessories for hoists
- B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
- B66D2700/028—Pulley blocks with multiple sheaves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model provides a special hoist device that horizontal tube cooler heat exchange tube was changed, includes the herringbone mast, two mast swivel supports and hoist engine, its characterized in that: the herringbone mast is two mast upright posts, the two mast rotary supports (9) respectively comprise a support base plate (91) and two upright plates (92) with through holes (93) in the center, wherein: the two mast rotary supports (9) are welded at the top edge of the transverse tube cooler, a lifting lug (11) is arranged at the top of the transverse tube cooler, a chain block (8) is arranged between the lifting lug (75) of the first herringbone mast, and the winch (4) is arranged on the ground; the steel wire rope of the winch is finally connected with the hoisting steel wire rope group (6) through 3 hoisting pulleys, so that the special hoisting device for replacing the heat exchange tube of the horizontal tube cooler is achieved. The lifting device has the advantages of simple structure, convenient manufacture, capability of overcoming the defects of the traditional transverse tube cooler heat exchange tube replacement lifting mode, cost saving and improvement of the heat exchange tube lifting safety.
Description
Technical Field
The invention relates to a hoisting device, in particular to a special hoisting device for replacing a heat exchange tube of a transverse tube cooler and a use method thereof.
Background
The horizontal tube cooler is a main device of a coal gas purification area of a coking plant and is used for cooling coal gas, the heat exchange tubes inside the horizontal tube cooler need to be replaced after running for a certain period, and the heat exchange tubes are lifted by using an automobile crane conventionally.
The known manner of lifting heat exchange tubes using a truck crane therefore has the above-mentioned various inconveniences and problems.
Disclosure of Invention
The invention aims to provide a safe and reliable special hoisting device for replacing a heat exchange tube of a transverse tube cooler and a use method thereof, which solve the defects of the traditional hoisting mode for replacing the heat exchange tube of the transverse tube cooler.
In order to achieve the above object, the technical solution of the present invention is:
special hoist device that horizontal tube cooler heat exchange tube was changed establishes heat exchange tube each layer at horizontal tube cooler side edge and demolishs the platform, and sets up special hoist device at horizontal tube cooler top, including the herringbone mast, two mast swivel supports and hoist engine, its characterized in that:
the herringbone mast is characterized in that the herringbone mast is formed into a herringbone shape by two mast upright posts, the mast upright posts are steel pipes, a 1 st lifting lug and a 2 nd lifting lug are arranged at the top end of the herringbone mast, a 3 rd lifting lug is arranged in the middle of the herringbone mast, rotating lug seats are respectively arranged at the two bottom ends of the herringbone mast, and rotating lug seat holes are formed in the rotating lug seats;
the two mast rotary supports respectively comprise a support bottom plate and two vertical plates, wherein a through hole is formed in the center of each vertical plate, and the two vertical plates are parallel to each other at a certain interval; the two vertical plates are vertically welded and fixed on the bottom plate of the support; a rotary lug seat of a herringbone mast is respectively accommodated between two vertical plates of the two mast rotary supports, and a pin shaft is used for connecting a rotary lug seat hole with a through hole of the vertical plate;
wherein: the two mast rotary supports are welded at the top edge of the transverse tube cooler, and a chain block is arranged between the lifting lug arranged at the top of the transverse tube cooler and the 1 st lifting lug of the herringbone mast so as to control the pitching angle a of the herringbone mast;
the winch is arranged on the ground; the hoisting pulley is arranged, the 1 st hoisting pulley is connected with the 2 nd lifting lug through a steel wire rope, the 2 nd hoisting pulley is connected with the 3 rd lifting lug in the middle of the upright post of the mast through a steel wire rope, and the 3 rd hoisting pulley is arranged at the bottom of the transverse tube cooler; the hoist engine wire rope is upwards along the horizontal pipe cooler through the turning of the 3 rd lifting pulley, upwards along the upright post of the mast through the turning of the 2 nd lifting pulley, vertically downwards through the turning of the 1 st lifting pulley and through the counterweight, and finally is connected with a hoisting wire rope set, and the hoisting wire rope set is used for bundling and hoisting the heat exchange pipe, so that the special hoisting device for replacing the heat exchange pipe of the horizontal pipe cooler is achieved.
The special hoisting device for replacing the heat exchange tube of the transverse tube cooler can be further realized by adopting the following technical measures.
The special hoisting device for replacing the heat exchange tube of the transverse tube cooler is characterized in that two parallel 1 st supporting rods and 2 nd supporting rods are arranged between the two mast upright posts, the 1 st supporting rods and the 2 nd supporting rods are separated by a certain interval, and inclined supporting rods are arranged in the interval to improve the strength of the herringbone mast.
The special hoisting device for replacing the heat exchange tube of the transverse tube cooler is characterized in that the 1 st lifting lug and the 2 nd lifting lug are correspondingly and fixedly arranged on two sides of the herringbone mast.
The special hoisting device for replacing the heat exchange tube of the transverse tube cooler is characterized in that the specification of the chain block can bear the hoisting weight of the mast, the hoisting weight of the hoisting machine can bear the weight of the heat exchange tube expected to be hoisted, the structural strength of the herringbone mast is required to meet the hoisting bearing capacity requirement, and the pitching angle of the herringbone mast is required to ensure that the extending distance of the herringbone mast can exceed the dismantling platform of the heat exchange tube.
The application method of the special hoisting device for replacing the heat exchange tube of the transverse tube cooler is characterized by comprising the following steps of:
a. special hoisting device for replacing heat exchange tube of transverse tube cooler
Manufacturing a herringbone mast, two mast rotary supports, and arranging a special hoisting device for replacing a heat exchange tube of a transverse tube cooler by a winch;
b. special hoisting device for replacing heat exchange tube of transverse tube cooler
The method comprises the steps that a special hoisting device is installed on a cross tube cooler heat exchange tube replacement site, a herringbone mast is fixed at the top of the cross tube cooler through two manufactured mast rotary supports through a pin shaft, the pitching angle of the herringbone mast is adjusted through a chain block fixed on a lifting lug at the top of the cooler, a winch is fixed on the ground of a construction site, a winch wire rope is guided through a hoisting pulley installed at the bottom of the cross tube cooler and two hoisting pulleys installed on lifting lugs of the herringbone mast, the winch wire rope for hoisting the heat exchange tube is guided to the top of the cross tube cooler from the ground and is guided downwards through pulleys on the herringbone mast, the end parts of the winch wire rope are connected with two hoisting wire rope groups, and a counterweight is hung on the upper part of each hoisting wire rope group and used for hoisting and descending a wire rope when no load is generated;
c. the load test of the winch comprises the following steps of;
(1) No-load test
Starting a winch, performing 1-2 times of tests within the full height range of the horizontal pipe cooler, and checking whether lifting of the hoisting steel wire rope is smooth, blocking exists or not, and whether a winch braking and control system is normal or not;
(2) Rated load test
Lifting a rated load weight, carrying out a lifting test, and checking whether the herringbone mast is deformed or not, whether the lifting of the lifted object is smooth and free of blocking or not, and whether the hand hoist for fixing the mast is abnormal or not;
(3) Static load test
The hoist lifts the rated load weight, the height of 100-200 mm from the ground, gradually loads the rated load to 1.25 times, the suspension time is not less than 10 minutes, after the load is removed, the mast is checked for deformation, and the chain block is fixed for abnormality. Repeating the steps for 2 to 3 times, and keeping no abnormality;
(4) Dynamic load test
The winch lifts a heavy object with 1.1 times of rated load, and the functions of each part of a special lifting device for replacing a heat exchange tube of the transverse tube cooler and a winch brake are tested; the dynamic load test is not less than 3 times, whether each component of the special hoisting device for replacing the heat exchange tube of the horizontal tube cooler is damaged or not is visually checked, whether the joint is loose or damaged or not is checked, and whether the operation condition of the winch and control equipment thereof is normal or not is checked;
d. formally hoisting heat exchange tube
The special hoisting device for replacing the heat exchange tubes of the transverse tube cooler can be formally used after all the tests are qualified, the hoisting wire ropes are controlled to be lifted up and down through the hoisting machine, the positions of the dismantling platforms of all layers of the heat exchange tubes which are erected on the side edges of the transverse tube cooler are required to be lifted up and down according to the replacement process of the heat exchange tubes, and the old heat exchange tubes are hoisted and dismantled to the ground and the new heat exchange tubes are hoisted and dismantled to the installation positions.
The application method of the special hoisting device for replacing the heat exchange tube of the transverse tube cooler can be further realized by adopting the following technical measures.
According to the method, the specification of the chain block can bear the hoisting weight of the mast, and the specification of the winch can meet the hoisting weight requirement of replacing the heat exchange tube of the transverse tube cooler.
According to the method, the structural strength of the herringbone mast is required to meet the requirement of hoisting bearing capacity, and the pitching angle of the herringbone mast is required to ensure that the extending distance of the herringbone mast can exceed the dismantling platform of the heat exchange tube.
After the technical scheme is adopted, the special hoisting device for replacing the heat exchange tube of the transverse tube cooler and the use method thereof have the following advantages:
1. the special hoisting device has simple structure and convenient manufacture;
2. the special hoisting device is simple and convenient to install, the hoisting method is simple and practical, the operability is strong, the hoisting device is suitable for replacing and hoisting the heat exchange tubes of the transverse tube coolers with various heights, sizes and working conditions, the defect of the traditional replacing and hoisting mode of the heat exchange tubes of the transverse tube coolers can be overcome, the mechanical shift expense of the heat exchange tube hoisting machine is saved, and the hoisting safety of the heat exchange tubes is improved;
3. the special hoisting device has low manufacturing cost and reduces the replacement and overhaul engineering cost of the heat exchange tube of the transverse tube cooler.
Drawings
FIG. 1 is a schematic view of a herringbone mast structure according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of a mast slewing bearing according to an embodiment of the present invention;
FIG. 4 is a side view of FIG. 3;
fig. 5 is a schematic view of a pin structure according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a special hoisting device for replacing heat exchange tubes of a horizontal tube cooler according to an embodiment of the invention;
fig. 7 is a schematic diagram of a use state of a special lifting device for replacing a heat exchange tube of a horizontal tube cooler according to an embodiment of the invention.
In the figure: 1 st lifting pulley, 2 nd lifting pulley, 3 rd lifting pulley, 4 hoist engine, 5 counter weight, 6 hoist wire rope group, 7 herringbone mast, 71 mast stand, 72 st stay, 73 nd stay, 74 diagonal stay, 75 st lifting lug, 76 nd lifting lug, 77 rd lifting lug, 78 rotary lug seat, 79 rotary lug seat hole, 8 chain block, 9 mast rotary support, 91 support bottom plate, 92 riser, 93 through hole, 10 pin roll, 11 lifting lug, 12 heat exchange tube, 13 cross tube cooler.
Detailed Description
The invention is further described below with reference to examples and figures thereof.
Example 1
According to the special hoisting device for replacing the heat exchange tube of the transverse tube cooler, a heat exchange tube dismantling platform (not shown in the figure) is erected on the edge of the side face of the transverse tube cooler, and a lifting lug is arranged on the top of the transverse tube cooler and comprises a herringbone mast, two mast rotary supports and a winch.
Referring now to fig. 1 and 2, fig. 1 is a schematic view of a herringbone mast according to an embodiment of the present invention, and fig. 2 is a side view of fig. 1. As shown in the figure, the herringbone mast 7 is formed by two mast upright posts 71, the mast upright posts are steel pipes, the top ends of the mast upright posts are provided with a 1 st lifting lug 75 and a 2 nd lifting lug 76, the middle part of the mast upright posts is provided with a 3 rd lifting lug 77, the two bottom ends of the mast upright posts are respectively provided with a rotary lug seat 78, and rotary lug seat holes 79 are formed in the rotary lug seats; two parallel 1 st stay bars 72 and 2 nd stay bars 73 are arranged between the two mast upright posts, the 1 st stay bars and the 2 nd stay bars are separated by a certain interval, and diagonal stay bars 74 are arranged in the interval to improve the strength of the herringbone mast. The 1 st lifting lug (75) and the 1 st lifting lug (76) are correspondingly and fixedly arranged on two sides of the herringbone mast.
Fig. 3 is a schematic view of a structure of a mast rotary support according to an embodiment of the present invention, fig. 4 is a side view of fig. 3, and fig. 5 is a schematic view of a pin structure according to an embodiment of the present invention. The two mast rotary supports 9 respectively comprise a support bottom plate 91 and two vertical plates 92 with a through hole 93 in the center, and the two vertical plates are parallel with each other at a certain interval; the two vertical plates are vertically welded and fixed on the bottom plate of the support; the middle of the two vertical plates of the two mast rotary supports 9 is respectively provided with a rotary lug seat 78 of a herringbone mast, and the rotary lug seat holes 79 are connected with through holes 93 of the vertical plates 92 by pin shafts;
wherein: the two mast rotary supports 9 are welded at the top edge of the transverse tube cooler, and a chain block 8 is arranged between a lifting lug 11 arranged at the top of the transverse tube cooler and a lifting lug 75 of the first herringbone mast to control the pitching angle of the herringbone mast; the specification of the chain block is required to bear the hoisting weight of the mast, the hoisting weight of the winch is required to bear the weight of the heat exchange tube expected to be hoisted, the structural strength of the herringbone mast is required to meet the requirement of hoisting bearing capacity, and the pitching angle of the herringbone mast is required to ensure that the extending distance of the herringbone mast can exceed the dismantling platform of the heat exchange tube.
The winch 4 is arranged on the ground; the lifting pulley is arranged, the 1 st lifting pulley 1 is connected with the 2 nd lifting lug 76 by a steel wire rope, the 2 nd lifting pulley 2 is connected with the 3 rd lifting lug 77 in the middle of the mast upright 71 by a steel wire rope, and the 3 rd lifting pulley 3 is arranged at the bottom of the transverse tube cooler; the hoist engine wire rope turns to upwards along the horizontal pipe cooler through the 3 rd lifting pulley 3, upwards along the mast upright 71 through the 2 nd lifting pulley 2 turn, vertically downwards through the 1 st lifting pulley 1 turn and the counterweight 5, and finally is connected with the hoisting wire rope group 6, and the hoisting wire rope group is used for bundling the hoisting heat exchange pipe 12, so that the special hoisting device for replacing the horizontal pipe cooler heat exchange pipe is achieved.
Example 2
The application method of the special hoisting device for replacing the heat exchange tube of the transverse tube cooler comprises the following steps:
a. special hoisting device for manufacturing and installing heat exchange tube of transverse tube cooler
The lifting appliance is designed by referring to the lifting principle of the mast crane, and the special lifting device consists of a herringbone mast, a chain block, a support, a winch, a lifting pulley, a counterweight, a lifting steel wire rope and the like. The winch is used as a lifting part of the special lifting device, the mast is used as a guide support of a lifting tool, and the pulley is used as a guide of a lifting steel wire rope;
b. special hoisting device for mounting heat exchange tube of transverse tube cooler on replacement site
The method comprises the steps that a herringbone mast is fixed at the top of a cross tube cooler through two manufactured mast rotary supports, the pitching angle a of the herringbone mast is adjusted through a chain block fixed on a lifting lug at the top of the cooler, a winch is fixed on the ground of a construction site, a winch wire rope is guided through a hoisting pulley arranged at the bottom of the cross tube cooler and two lifting pulleys arranged on lifting lugs of the herringbone mast, the winch wire rope for hoisting a heat exchange tube is guided to the top of the cross tube cooler from the ground, and is guided downwards through pulleys on the herringbone mast, the end part of the winch wire rope is connected with two wire rope groups, and a counterweight is hung on the upper part of the hoisting wire rope for lifting and lowering the wire rope when no load is applied;
c. load test is carried out to check whether the lifting performance can meet the safety requirement
Because of the hoisting equipment, a load test is required, and the load test is performed in the following steps.
(1) No-load test: starting the winch, carrying out 1-2 times of tests within the full height range of the horizontal pipe cooler, and checking whether lifting of the hoisting steel wire rope is smooth, blocking exists or not, and whether a winch braking and control system is normal or not.
(2) Rated load test: and (3) lifting a rated load weight, carrying out a lifting test, and checking whether the herringbone mast is deformed or not, and whether the lifting of the lifted object is smooth or not without blocking, and whether the hand chain hoist for fixing the mast is abnormal or not.
(3) Static load test
The hoist lifts the rated load weight, the height of 100-200 mm from the ground, gradually loads the rated load to 1.25 times, the suspension time is not less than 10 minutes, after the load is removed, the mast is checked for deformation, and the chain block is fixed for abnormality. The method is repeated for 2 to 3 times, and no abnormality exists.
(4) Dynamic load test
The hoist lifts a weight with 1.1 times of rated load, and functions of each part of the special lifting device and a hoist brake are tested. The test is not less than 3 times, whether the special hoisting components are damaged or not is checked visually, whether the joint is loose or damaged or not, and whether the operation condition of the winch and control equipment thereof is normal or not is checked visually.
After all the tests are qualified, the test paper can be formally used;
d. formally hoisting heat exchange tube
The hoisting wire rope is controlled to be lifted up and down by the winch, the hoisting wire rope is lifted to the hoisting positions of all layers of the heat exchange tubes of the horizontal tube cooler according to the heat exchange tube replacement process, and the dismantled heat exchange tubes are started to be hoisted to the ground and the new heat exchange tubes are started to be hoisted to the installation positions.
The special hoisting device for replacing the heat exchange tube of the transverse tube cooler and the application method thereof have substantial characteristics and obvious technical progress, can solve the defects of the traditional hoisting mode for replacing the heat exchange tube of the transverse tube cooler, save the machine station shift expense of the hoisting machine of the heat exchange tube, reduce the overhaul cost and improve the hoisting safety of the heat exchange tube. Meanwhile, the special hoisting device for replacing the heat exchange tube of the transverse tube cooler is simple and convenient to manufacture and install, low in manufacturing cost, simple and practical in hoisting method, strong in operability and suitable for replacing and hoisting the heat exchange tube of the transverse tube cooler with various heights, sizes and working conditions.
The above embodiments are provided for illustrating the present invention only, and not for limiting the present invention, and various changes or modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention. Accordingly, all equivalent arrangements should be considered to be within the scope of the present invention as defined in the claims.
Claims (7)
1. A special hoisting device for replacing a heat exchange tube of a horizontal tube cooler comprises the following steps:
a. special hoisting device for replacing heat exchange tube of transverse tube cooler
Manufacturing a herringbone mast, two mast rotary supports, and arranging a special hoisting device for replacing a heat exchange tube of a transverse tube cooler by a winch;
b. special hoisting device for replacing heat exchange tube of transverse tube cooler
The method comprises the steps that a special hoisting device is installed on a cross tube cooler heat exchange tube replacement site, a herringbone mast is fixed at the top of the cross tube cooler through two manufactured mast rotary supports through a pin shaft, the pitching angle of the herringbone mast is adjusted through a chain block fixed on a lifting lug at the top of the cooler, a winch is fixed on the ground of a construction site, a winch wire rope is guided through a hoisting pulley installed at the bottom of the cross tube cooler and two hoisting pulleys installed on lifting lugs of the herringbone mast, the winch wire rope for hoisting the heat exchange tube is guided to the top of the cross tube cooler from the ground and is guided downwards through pulleys on the herringbone mast, the end parts of the winch wire rope are connected with two hoisting wire rope groups, and a counterweight is hung on the upper part of each hoisting wire rope group and used for hoisting and descending a wire rope when no load is generated;
c. the load test of the winch comprises the following steps of;
(1) No-load test
Starting a winch, performing 1-2 times of tests within the full height range of the horizontal pipe cooler, and checking whether lifting of the hoisting steel wire rope is smooth, blocking exists or not, and whether a winch braking and control system is normal or not;
(2) Rated load test
Lifting a rated load weight, carrying out a lifting test, and checking whether the herringbone mast is deformed or not, whether the lifting of the lifted object is smooth and free of blocking or not, and whether the hand hoist for fixing the mast is abnormal or not;
(3) Static load test
The hoist lifts the rated load weight, the height of 100-200 mm from the ground, gradually loads the rated load to 1.25 times, the suspension time is not less than 10 minutes, after the load is removed, the mast is checked for deformation, and the chain block is fixed for abnormality; repeating the steps for 2 to 3 times, and keeping no abnormality;
(4) Dynamic load test
The winch lifts a heavy object with 1.1 times of rated load, and the functions of each part of a special lifting device for replacing a heat exchange tube of the transverse tube cooler and a winch brake are tested; the dynamic load test is not less than 3 times, whether each component of the special hoisting device for replacing the heat exchange tube of the horizontal tube cooler is damaged or not is visually checked, whether the joint is loose or damaged or not is checked, and whether the operation condition of the winch and control equipment thereof is normal or not is checked;
d. formally hoisting heat exchange tube
The special hoisting device capable of formally using the heat exchange tubes of the cross tube cooler at the back after all the tests are qualified is used, the hoisting steel wire ropes are controlled to be lifted up and down through the hoisting machine, the positions of the dismantling platforms of all the layers of the heat exchange tubes erected on the side edges of the cross tube cooler are required to be lifted up and down according to the heat exchange tube replacement process, the old heat exchange tubes are started to be lifted up and dismantled to the ground and the new heat exchange tubes are started to be lifted up and down to the installation positions, the dismantling platforms of all the layers of the heat exchange tubes are erected on the side edges of the cross tube cooler (13), and the special hoisting device is arranged at the top of the cross tube cooler and comprises a herringbone mast, two mast rotary supports and a hoisting machine, and is characterized in that:
the herringbone mast (7) is formed by two mast upright posts (71) in a herringbone shape, the mast upright posts are steel pipes, a 1 st lifting lug (75) and a 2 nd lifting lug (76) are arranged at the top end of the herringbone mast, a 3 rd lifting lug (77) is arranged in the middle of the herringbone mast, rotary lug seats (78) are respectively arranged at the two bottom ends of the herringbone mast, and rotary lug seat holes (79) are formed in the rotary lug seats;
the two mast rotary supports (9) respectively comprise a support base plate (91) and two vertical plates (92) with through holes (93) in the center, and the two vertical plates are parallel to each other at a certain interval; the two vertical plates are vertically welded and fixed on the bottom plate of the support; a rotary lug seat (78) of a horizontal mast is respectively accommodated between two vertical plates of the two mast rotary supports (9), and a pin shaft (10) is used for connecting a rotary lug seat hole (79) with a through hole (93) of the vertical plate (92);
wherein: the two mast rotary supports (9) are welded at the top edge of the cross tube cooler, and a chain block (8) is arranged between a lifting lug (11) arranged at the top of the cross tube cooler and a lifting lug (75) of the first herringbone mast so as to control the pitching angle of the herringbone mast;
the winch (4) is arranged on the ground; the hoisting pulley is arranged, the 1 st hoisting pulley (1) is connected with the 2 nd lifting lug (76) through a steel wire rope, the 2 nd hoisting pulley (2) is connected with the 3 rd lifting lug (77) in the middle of the mast upright post (71) through a steel wire rope, and the 3 rd hoisting pulley (3) is arranged at the bottom of the transverse tube cooler; the hoist engine wire rope turns to upwards along the horizontal pipe cooler through the 3 rd lifting pulley (3), upwards along the mast upright post (71) through the 2 nd lifting pulley (2), vertically downwards through the counterweight (5) through the 1 st lifting pulley (1), and finally is connected with the hoisting wire rope group (6), and the hoisting wire rope group is used for bundling the hoisting heat exchange pipe (12), so as to achieve the special hoisting device for replacing the horizontal pipe cooler heat exchange pipe.
2. The special hoisting device for replacing the heat exchange tube of the cross tube cooler according to claim 1, wherein two parallel 1 st support rods (72) and 2 nd support rods (73) are arranged between the two mast upright posts, the 1 st support rods and the 2 nd support rods are separated by a certain interval, and diagonal support rods (74) are arranged in the interval to improve the strength of the herringbone mast.
3. The special hoisting device for replacing the heat exchange tube of the transverse tube cooler according to claim 1, wherein the 1 st lifting lug (75) and the 2 nd lifting lug (76) are correspondingly and fixedly arranged on two sides of the herringbone mast.
4. The special hoisting device for replacing heat exchange tubes of a cross tube cooler according to claim 1, wherein the specification of the chain block is required to bear the hoisting weight of a mast, the hoisting weight of a hoisting machine is required to bear the weight of the heat exchange tubes expected to be hoisted, the structural strength of a herringbone mast is required to meet the requirement of hoisting bearing capacity, and the pitching angle of the herringbone mast is required to ensure that the extending distance of the herringbone mast can exceed the dismantling platform of the heat exchange tubes.
5. A method of using the special lifting device for replacing heat exchange tubes of a cross tube cooler as claimed in claim 1, comprising the steps of:
a. special hoisting device for replacing heat exchange tube of transverse tube cooler
b. Special hoisting device for replacing heat exchange tube of transverse tube cooler
c. The load test of the winch comprises the following steps of;
(1) No-load test
(2) Rated load test
(3) Static load test
(4) Dynamic load test
d. Formally hoisting heat exchange tube
The special hoisting device for replacing the heat exchange tubes of the transverse tube cooler can be formally used after all the tests are qualified, the hoisting wire ropes are controlled to be lifted up and down through the hoisting machine, the positions of the dismantling platforms of all layers of the heat exchange tubes which are erected on the side edges of the transverse tube cooler are required to be lifted up and down according to the replacement process of the heat exchange tubes, and the old heat exchange tubes are hoisted and dismantled to the ground and the new heat exchange tubes are hoisted and dismantled to the installation positions.
6. The method of claim 5, wherein the chain block is sized to support the weight of the mast, and the hoist is sized to meet the weight requirement of the replacement of the heat exchange tube of the horizontal tube cooler.
7. The method for using the special hoisting device for replacing the heat exchange tube of the cross tube cooler of claim 5, wherein the structural strength of the herringbone mast is required to meet the requirement of hoisting bearing capacity, and the pitching angle of the herringbone mast is required to ensure that the extending distance of the herringbone mast can exceed the dismantling platform of the heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610241965.9A CN107304030B (en) | 2016-04-19 | 2016-04-19 | Special hoisting device for replacing heat exchange tube of transverse tube cooler and application method thereof |
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| CN201610241965.9A CN107304030B (en) | 2016-04-19 | 2016-04-19 | Special hoisting device for replacing heat exchange tube of transverse tube cooler and application method thereof |
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| CN107304030B true CN107304030B (en) | 2023-05-23 |
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| CN113336108A (en) * | 2021-04-21 | 2021-09-03 | 中国化学工程第三建设有限公司 | Movable mast tool for dismantling high-altitude tower crane in cooling tower |
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| CN1987020B (en) * | 2005-12-20 | 2010-05-26 | 上海市机械施工有限公司 | Attached climbing type high mast structure mounting method and constructing device |
| CN201980890U (en) * | 2010-12-28 | 2011-09-21 | 上海市机械施工有限公司 | Herringbone hoisting mast for hoisting under special situation of high altitude |
| CN202897871U (en) * | 2012-11-05 | 2013-04-24 | 艾里亚尔·赛提瓦力地 | Small lifting machine for construction |
| CN203451049U (en) * | 2013-08-22 | 2014-02-26 | 河南卫华重型机械股份有限公司 | Hanger upper frame |
| CN203445481U (en) * | 2013-09-02 | 2014-02-19 | 国家电网公司 | Sling specialized for replacing whole 66-kilovolt isolating switch set |
| CN104609318A (en) * | 2015-01-30 | 2015-05-13 | 中国化学工程第三建设有限公司 | Herringbone mast hoisting system convenient to move |
| CN205603125U (en) * | 2016-04-19 | 2016-09-28 | 五冶集团上海有限公司 | Special hoist device that horizontal water tube cooler heat exchange tube was changed |
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