CN112027944B - Lifting steel wire rope reel assembly of four-connecting-rod portal crane and replacement process - Google Patents

Lifting steel wire rope reel assembly of four-connecting-rod portal crane and replacement process Download PDF

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Publication number
CN112027944B
CN112027944B CN202010834139.1A CN202010834139A CN112027944B CN 112027944 B CN112027944 B CN 112027944B CN 202010834139 A CN202010834139 A CN 202010834139A CN 112027944 B CN112027944 B CN 112027944B
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China
Prior art keywords
steel wire
rope
wire rope
barrel
pressing
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CN202010834139.1A
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CN112027944A (en
Inventor
关克概
林光正
马忠祥
郑宇鑫
陈霖
欧祥锦
林志荣
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Fujian Ninglian Port Co ltd
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Fujian Ninglian Port Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/66—Outer or upper end constructions
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Abstract

The invention relates to a lifting steel wire rope reel assembly of a four-connecting-rod portal crane and a replacement process thereof, wherein the reel assembly comprises a hollow reel and a traction rope wound on the reel; the end covers are fixedly arranged at two ends of the barrel of the winding barrel, the outer edges of the end covers are positioned on the outer side of the outer edge of the barrel, the end part of the barrel of the winding barrel is fixedly provided with an annular outer side baffle, the outer side baffle and the close end cover are arranged at intervals to form an end part space for winding a traction rope, and the traction rope is wound in the end part space of the winding barrel and is tightly pressed by a plurality of L-shaped rope pressing screws arranged on the circumference of the barrel; the lifting steel wire rope is wound on the barrel, the lifting steel wire rope close to the tail part of the outer side baffle is fixed on the barrel through a plurality of pressing parts arranged on the circumference of the barrel, the tail part of the lifting steel wire rope is fixedly connected with the head part of the traction rope, and the tail part of the traction rope is fixedly connected on the winding drum. The hoisting steel wire rope is wound by using the hoisting steel wire rope reel assembly, and the process saves the time for cleaning the site, greatly improves the operation safety and shortens the replacement time.

Description

Lifting steel wire rope reel assembly of four-connecting-rod portal crane and replacement process
Technical Field
The invention relates to the technical field of hoisting steel wire rope reel equipment and replacement processes of portal cranes, in particular to a hoisting steel wire rope reel assembly of a four-link portal crane and a replacement process.
Background
With the increase of maritime trade, the four-link portal crane is put into use in a large amount in domestic seaports, and the technical stability is mature day by day. The lifting steel wire rope of the four-link gantry crane needs to be replaced due to abrasion.
The replacement process flow of the lifting steel wire rope of the existing four-link portal crane is as follows:
firstly, a forklift driver transports a steel wire rope reel to a proper position below a four-link portal crane needing to replace a steel wire rope, and a portal crane driver rotates a crane boom to the same side of the reel and locks a rotating brake;
secondly, a ground worker removes a lifting hook on the equipment, after a driver of the gantry crane slowly places the steel wire rope to be replaced on the ground through a lifting mechanism, a gas cutting machine is used for cutting off a wedge connector, and a technician on the machine removes a height limiting device on a steel wire rope reel;
thirdly, welding the old steel wire rope and the new steel wire rope which are put down on the equipment, and slowly lifting the new steel wire rope to a proper position through a lifting mechanism of a gantry crane by using the old steel wire rope after the welding is confirmed to be firm;
fourthly, the technical personnel on the machine fixes the new steel wire rope by using a chain block, cuts the old steel wire rope from the new steel wire rope, and then pulls the rope head of the old steel wire rope to the back door of the machine room;
fifthly, a driver of the portal crane slowly puts the old steel wire rope on the steel wire rope reel on the ground through a rear door of the machine room through a hoisting mechanism, and in the process, auxiliary personnel on the portal crane need to continuously adjust the position of the steel wire rope to prevent foreign matters from being clamped; after the old steel wire rope is placed in the last three circles, removing a steel wire rope pressing plate and a fastening nut on the equipment winding drum, separating the tail part of the steel wire rope from the winding drum by using a crowbar, and then enabling the steel wire rope to fall to the ground in a free falling mode;
and sixthly, fixing the tail part of the new steel wire rope with the winding drum firmly, removing the chain block, starting the equipment, operating the winding drum to place the new steel wire rope into the opposite steel wire rope groove, and measuring the length of the steel wire rope.
Finally, the ground worker completes the wedging connector again, installs the lifting hook, adjusts the height limit, cleans the site and completes the replacement work.
The existing replacement mode always takes more than 12 hours, at least 8 technicians such as a forklift driver, a door machine driver, an electric welder, an assistant and the like need to be equipped, and huge labor and time cost needs to be consumed; potential safety hazards of welding point falling easily occur when a new steel wire rope is lifted, and potential safety hazards exist when an old steel wire rope falls to the ground in a free falling mode; the condition of rework is caused by inaccurate fixed position of the chain block, so that the prior replacing process has great problems in the aspects of efficiency, labor, cost and safety.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a lifting steel wire rope reel assembly of a four-link gantry crane and a replacement process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hoisting steel wire rope reel assembly of a four-connecting-rod portal crane comprises a hollow reel and a traction rope wound on the reel; the end covers are fixedly arranged at two ends of the barrel of the winding barrel, the outer edges of the end covers are positioned on the outer side of the outer edge of the barrel, the end part of the barrel of the winding barrel is fixedly provided with an annular outer side baffle, the outer side baffle and the close end cover are arranged at intervals to form an end part space for winding a traction rope, and the traction rope is wound in the end part space of the winding barrel and is tightly pressed by a plurality of L-shaped rope pressing screws arranged on the circumference of the barrel; the lifting steel wire rope is wound on the barrel, the lifting steel wire rope close to the tail part of the outer side baffle is fixed on the barrel through a plurality of pressing parts arranged in the circumferential direction of the barrel, the tail part of the lifting steel wire rope is fixedly connected with the head part of the traction rope, and the tail part of the traction rope is fixedly connected on the winding drum.
Furthermore, a connecting nut is welded at the tail end of the tail of the lifting steel wire rope and is fixedly connected with the head of the traction rope.
Furthermore, a shaft is installed at one end of the winding drum along the central axis of the winding drum, one end of the shaft is located inside the winding drum and the end of the shaft is fixed at the center of a radial plate, the periphery of the radial plate is fixedly installed on the inner wall of the winding drum barrel, the other end of the shaft penetrates through a central through hole of the end cover to extend to the outer side of the end cover, the end of the shaft is sleeved on the inner ring of a self-aligning roller bearing, the self-aligning roller bearing is supported on a bearing seat assembly, a coupling is installed at the other end of the winding drum along the central axis of the winding drum, and the coupling is fixedly installed on the side end cover.
Furthermore, one end of the rope pressing screw is abutted to the outer side baffle and the outer wall of the drum body of the winding drum, the other end of the rope pressing screw penetrates through a through hole formed in the end cover and extends to the outside of the end cover to be in threaded connection with a hexagonal nut, and a flat cushion is additionally arranged between the hexagonal nut and the end cover.
Furthermore, the outer wall of the barrel body of the winding drum is provided with a spiral groove for winding the lifting steel wire rope, and the diameter of the opening of the spiral groove corresponds to the diameter of the lifting steel wire rope.
Furthermore, the pressing parts comprise a plurality of double pressing parts arranged on the circumferential direction of the cylinder body and used for pressing and clamping the tail end of the lifting steel wire rope, and a single pressing part used for pressing and clamping the tail end of the lifting steel wire rope.
Further, two rope casting die include rope pressing plate, stud and fastening nut, and rope pressing plate bottom has about two recesses that go up the interval setting, and the through-hole that supplies stud to pass that link up from top to bottom is seted up at the middle part between two recesses, and two recesses of rope pressing plate block afterbody two rings and play to rise wire rope, and the stud lower extreme passes behind the through-hole at rope pressing plate middle part the spiro union on the reel barrel, upper end and fastening nut spiro union.
A lifting steel wire rope replacing process of a four-link gantry crane is characterized in that the replacing process comprises the following steps:
conveying the new hoisting steel wire rope to a position below the four-link portal crane;
removing a lifting hook on the equipment, slowly placing the old lifting steel wire rope part on the ground through a lifting mechanism, and simultaneously coiling and finishing the old lifting steel wire rope;
cutting off the wedge connector, detaching a height limiting device above the winding drum, and detaching a pressing piece on the lifting steel wire rope;
the old hoisting steel wire rope and the traction rope are released through the trunk of the elephant nose, the old hoisting steel wire rope is removed, the new hoisting steel wire rope is connected with the traction rope, the new hoisting steel wire rope is pulled to the position of the equipment winding drum through the traction rope and wound on the drum body of the winding drum, and the pressing piece is installed to press the new hoisting steel wire rope;
adjusting the relative length of a new hoisting steel wire rope, making a wedge-shaped connector, installing a lifting hook, installing the height limiting device in place, and completing replacement.
And before the new hoisting steel wire rope is conveyed to the lower part of the crane, a nut is welded at the end part of the new hoisting steel wire rope.
The haulage rope is wire rope, divides the haulage rope split into two strands, and one of them strand is from newly lifting up the hole that the nut was passed to one side of the nut of wire rope tip, and the other strand passes the hole of nut from the opposite side of nut, makes two strands of haulage rope be the fork form, and two strand tip after the cross pass through the iron wire with the haulage rope of not splitting and fix together to use electrician's adhesive tape to twine the enhancement fixed part of iron wire and fix.
The invention has the following beneficial effects:
the invention improves the winding drum assembly structure of the lifting steel wire rope of the existing four-connecting-rod portal crane, reserves a space for winding the traction rope on the winding drum for winding the lifting steel wire rope, and winds the traction rope connected with the old and new lifting steel wire ropes so as to facilitate the replacement of the lifting steel wire rope.
The number of workers required by the new replacement process of the hoisting steel wire rope is not more than 7, and the overall replacement time is shortened to 5 hours. Because the traction rope is adopted for replacement, the joint of a new lifting steel wire rope can be welded indoors in advance, the firmness degree of the interface is ensured, the old lifting steel wire rope is slowly placed on the ground through the traction rope, ground workers can coil the steel wire rope according to the situation, and the time for cleaning the site is saved. By adopting the replacing mode, the operation safety is greatly improved, the replacing time is shortened, and the replacing operation can be carried out in rainy days.
Drawings
FIG. 1 is a schematic structural diagram of a four-link gantry crane of the present invention;
FIG. 2 is a schematic view of the connection of a hoisting cable of the present invention wound around a drum;
FIG. 3 is a schematic view of the construction of the spool assembly of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic structural view of a rope pressing plate according to the present invention;
fig. 6 is an enlarged structural view at B in fig. 3.
Description of reference numerals:
1-winding drum, 11-drum body, 111-spiral groove, 12-end cover, 13-shaft, 14-spoke plate, 15-self-aligning roller bearing, 16-bearing seat assembly, 17-coupling, 18-outer side baffle, 2-hauling cable, 21-rope pressing screw, 22-hexagon nut, 23-flat pad, 3-lifting steel wire rope, 4-double rope pressing piece, 41-rope pressing plate, 411-groove, 42-double stud, 43-fastening nut and 5-single rope pressing piece.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the first embodiment,
Referring to fig. 1 to 6, a hoisting cable drum assembly of a four-link gantry crane includes a hollow drum 1 and a traction rope 2 wound on the drum 1. Both ends of a cylinder body 11 of the winding drum 1 are fixedly provided with end covers 12, and the outer edges of the end covers 12 are positioned on the outer sides of the outer edges of the cylinder body 11. Axle 13 is installed along its central axis to 1 one end of reel, the one end of axle 13 is located the center of barrel 11 inside and the end fixing at a radials 14, the periphery fixed mounting of radials 14 is on barrel 11 inner wall, the other end of axle 13 passes the central through-hole of this end cover 12 and extends the end cover 12 outside, and the end cover is established at a self-aligning roller bearing 15 inner circle, self-aligning roller bearing 15 supports on a bearing frame assembly 16. The other end of the winding drum 1 is provided with a coupling 17 along the central axis 13, and the coupling 17 is fixedly arranged on the side end cover 12.
Two end parts of the barrel body 11 of the winding drum 1 are fixedly provided with annular outer side baffles 18, and the outer side baffles 18 and the close end cover 12 are arranged at intervals to form an end space for winding the traction rope 2. The traction rope 2 is wound in the end space of the winding drum 1 and is pressed by a plurality of L-shaped rope pressing screws 21 arranged in the circumferential direction of the drum 11. One end of the rope pressing screw 21 is abutted to the outer side baffle 18 and the outer wall of the barrel 11 of the winding barrel 1, the other end of the rope pressing screw penetrates through a through hole formed in the end cover 12 and extends to the outside of the end cover 12 to be in threaded connection with a hexagonal nut 22, a flat gasket 23 is additionally arranged between the hexagonal nut 22 and the end cover 12, and therefore the traction rope 2 is limited in a space between the rope pressing screw 21 and the outer wall of the barrel 11.
The left part and the right part of the cylinder body 11 between the outer side baffles 18 at the two ends, which are bounded by the vertical central line o, are respectively provided with a spiral groove 111 for winding a hoisting steel wire rope 3, and the diameter of the notch of the spiral groove 111 corresponds to the diameter of the hoisting steel wire rope 3. Two hoisting steel wire ropes 3 of the four-link portal crane are respectively wound in spiral grooves 111 of the left part and the right part of the cylinder body 11, and two rings of hoisting steel wire ropes 3 at the tail part close to the outer side baffle 18 are fixed on the cylinder body 11 through a plurality of double rope pressing pieces 4 arranged on the circumferential direction of the cylinder body 11. The double-rope pressing part 4 comprises a rope pressing plate 41, a double-end stud 42 and a fastening nut 43, the bottom of the rope pressing plate 41 is provided with a left groove 411 and a right groove 411 which are arranged at intervals and are concave upwards, the middle part of the rope pressing plate 41 between the two grooves 411 is provided with a through hole which is through from top to bottom and is used for the double-end stud 42 to pass through, the two grooves 411 of the rope pressing plate 41 clamp the tail part of the two rings of lifting steel wire ropes 3, the lower end of the double-end stud 42 passes through the through hole in the middle part of the rope pressing plate 41 and then is screwed on the barrel body 11 of the winding drum 1, and the upper end of the double-end stud 42 is screwed with the fastening nut 43. The tail end of the lifting steel wire rope 3 is fixed on the barrel body 11 of the winding drum 1 through a single rope pressing piece 5. Specifically, the structure of the single rope pressing member 5 is similar to that of the double rope pressing member 4, and the difference lies in the structure of the rope pressing plate 41, and the rope pressing plate 41 of the single rope pressing plate is only provided with a groove 411 for clamping a circle of lifting steel wire rope 3.
The tail end of the tail of the lifting steel wire rope 3 is welded with a connecting nut (not shown in the figure), the connecting nut is fixedly connected with the head of the traction rope 2, and the tail of the traction rope 2 is fixedly connected to the winding drum 1.
Example II,
A lifting steel wire rope of a four-link gantry crane is wound on a barrel body 11 of a winding drum 1 of a winding drum assembly in the first embodiment, and a nut at the tail part of a lifting steel wire rope 3 on the barrel body 11 is fixedly connected with the head part of a traction rope 2.
The specific replacement process comprises the following steps:
welding a nut at the end of a new hoisting steel wire rope 3 for replacing the old hoisting steel wire rope 3;
using a forklift to transport the bracket of the new hoisting steel wire rope 3 with the welded nut to the position below the four-link portal crane;
ground workers remove a lifting hook on crane equipment, a driver of the gantry crane slowly puts the front end part of an old lifting steel wire rope 3 on the ground through a lifting mechanism, and simultaneously the ground workers coil the old lifting steel wire rope 3 put on the ground;
cutting off a wedge connector of an old hoisting steel wire rope 3 by using a gas cutting machine, removing a height limiting device on a winding drum 1 by a technician on the gas cutting machine, simultaneously loosening fastening nuts 43 of a double rope pressing piece 4 and a single rope pressing piece 5, and removing the double rope pressing piece 4 and the single rope pressing piece 5 of the old hoisting steel wire rope 3;
starting the equipment, putting down an old lifting steel wire rope 3 and a traction rope 2 through a trunk of a elephant, removing the old lifting steel wire rope 3, connecting a new lifting steel wire rope 3 with the traction rope 2, drawing the new lifting steel wire rope 3 to the position of an equipment winding drum 1 through the traction rope 2 and winding the new lifting steel wire rope 3 on a drum body 11 of the winding drum 1, and installing a double-rope pressing piece 4 and a single-rope pressing piece 5; preferably, at the in-process that newly play to rise wire rope 3 and haulage rope 2 and be connected, through the position of pulley and the supplementary adjustment haulage rope of rope, it is specific, fix rope one end in the computer lab, the gib head of pulley is passed to the rope other end, and on the pulley was arranged in to the haulage rope, the position of haulage rope was adjusted to the position of manual regulation pulley.
Adjusting the relative length of the new hoisting steel wire rope 3, making a wedge connector, installing a lifting hook, installing the height limiting device in place, and finishing the replacement.
The connection method of the nut at the tail part of the old hoisting steel wire rope 3 and the head part of the traction rope 2 and the connection method of the nut at the end part of the new hoisting steel wire rope 3 and the head part of the traction rope 2 are as follows:
the haulage rope 2 is wire rope, will the haulage rope split is two strands, and the preferred hemp core that can cut off, and one of them strand passes the hole of nut from one side of nut, and the other strand passes the hole of nut from the opposite side of nut, makes two strands of haulage rope be the fork form, and two strand end after the cross pass through the iron wire with the haulage rope of not splitting and fix together to use electrician's adhesive tape to twine the enhancement fixed part of iron wire.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims (6)

1. A process for replacing a lifting steel wire rope of a four-connecting-rod portal crane,
a hoisting steel wire rope (3) of the four-link portal crane is wound on a winding drum assembly, and the winding drum assembly comprises a hollow winding drum (1) and a traction rope (2) wound on the winding drum (1); both ends of a barrel body (11) of the winding barrel (1) are fixedly provided with end covers (12), the outer edge of each end cover (12) is positioned on the outer side of the outer edge of the barrel body (11), the end part of the barrel body (11) of the winding barrel (1) is fixedly provided with an annular outer side baffle (18), the outer side baffle (18) and the close end cover (12) are arranged at intervals to form an end part space for winding a traction rope (2), and the traction rope (2) is wound in the end part space of the winding barrel (1) and is pressed tightly through a plurality of L-shaped rope pressing screw rods (21) arranged on the circumference of the barrel body (11); the lifting steel wire rope (3) is wound on the barrel body (11), the lifting steel wire rope (3) close to the tail part of the outer side baffle (18) is fixed on the barrel body (11) through a plurality of pressing pieces arranged on the circumference of the barrel body (11), the tail part of the lifting steel wire rope (3) is fixedly connected with the head part of the traction rope (2), and the tail part of the traction rope (2) is fixedly connected on the winding drum (1);
the replacement process comprises the following steps:
conveying the new hoisting steel wire rope (3) to a position below the four-link portal crane;
removing a lifting hook on the equipment, slowly placing the old lifting steel wire rope (3) part on the ground through a lifting mechanism, and simultaneously coiling and finishing the old lifting steel wire rope;
cutting off the wedge connector, detaching a height limiting device above the winding drum (1), and detaching a pressing piece on the lifting steel wire rope (3);
the old hoisting steel wire rope (3) and the traction rope (2) are put down through the trunk of the trunk, the old hoisting steel wire rope (3) is removed, the new hoisting steel wire rope (3) is connected with the traction rope (2), the new hoisting steel wire rope (3) is pulled to the position of the equipment winding drum (1) through the traction rope (2) and wound on the drum body (11) of the winding drum (1), and a pressing piece is installed to press the new hoisting steel wire rope;
and adjusting the relative length of the new hoisting steel wire rope (3), making a wedge-shaped connector, installing a lifting hook, installing the height limiting device in place, and finishing the replacement.
2. The process for replacing the hoisting steel wire rope of the four-link portal crane according to claim 1, characterized in that: one end of the rope pressing screw rod (21) is abutted to the outer side baffle (18) and the outer wall of the barrel body (11) of the winding drum (1), the other end of the rope pressing screw rod penetrates through a through hole formed in the end cover (12) and extends to the outside of the end cover (12) to be in threaded connection with the hexagonal nut (22), and a flat gasket (23) is additionally arranged between the hexagonal nut (22) and the end cover (12).
3. The process for replacing the hoisting steel wire rope of the four-link portal crane according to claim 1, which is characterized in that: and before the new hoisting steel wire rope (3) is conveyed to the lower part of the crane, a nut is welded at the end part of the new hoisting steel wire rope (3) to be connected with the traction rope (2).
4. The process for replacing the hoisting steel wire rope of the four-link portal crane according to claim 3, characterized in that: haulage rope (2) are wire rope, are two strands with haulage rope (2) split, and wherein one strand is from newly rising the hole that passes the nut in one side of the nut of wire rope (3) tip, and the hole of nut is passed from the opposite side of nut to another strand, makes two strands of cross form of haulage rope (2), and two strand tip after crossing are together fixed through the iron wire with haulage rope (2) that do not split to it is fixed to use electrician's adhesive tape to twine the iron wire fixed part and strengthen fixedly.
5. The process for replacing the hoisting steel wire rope of the four-link portal crane according to claim 1, which is characterized in that: the pressing elements comprise a plurality of double pressing elements (4) and a single pressing element (5); one circle of the tail part of the lifting steel wire rope (3) is pressed and clamped on the cylinder body (11) of the winding drum (1) through a plurality of double rope pressing parts (4), and the tail end of the lifting steel wire rope (3) is pressed and clamped on the cylinder body (11) of the winding drum (1) through a single rope pressing part (5).
6. The process for replacing the hoisting steel wire rope of the four-link portal crane according to claim 5, wherein: double rope pressing member (4) are including pressing rope board (41), stud (42) and fastening nut (43), two recess (411) that go up the concave interval and set up about pressing rope board (41) bottom has, the through-hole that supplies stud (42) to pass that link up from top to bottom is seted up at the middle part between two recess (411), two recess (411) of pressing rope board (41) block afterbody two rings and play to rise wire rope (3), stud (42) lower extreme passes behind the through-hole at pressing rope board (41) middle part spiro union on reel (1) barrel (11), upper end and fastening nut (43) spiro union.
CN202010834139.1A 2020-08-18 2020-08-18 Lifting steel wire rope reel assembly of four-connecting-rod portal crane and replacement process Active CN112027944B (en)

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CN109553012B (en) * 2017-09-27 2021-10-22 宝山钢铁股份有限公司 Method for replacing steel wire rope of crane
CN110980520B (en) * 2019-08-26 2024-01-30 广州环投增城环保能源有限公司 Quick replacement method for steel wire rope

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