WO2023151702A1 - Dispositif de montage pour palette de tige de levage et écrou de tige de levage de grue à poutre - Google Patents

Dispositif de montage pour palette de tige de levage et écrou de tige de levage de grue à poutre Download PDF

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Publication number
WO2023151702A1
WO2023151702A1 PCT/CN2023/083560 CN2023083560W WO2023151702A1 WO 2023151702 A1 WO2023151702 A1 WO 2023151702A1 CN 2023083560 W CN2023083560 W CN 2023083560W WO 2023151702 A1 WO2023151702 A1 WO 2023151702A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
nut
bracket
tray
lifting machine
Prior art date
Application number
PCT/CN2023/083560
Other languages
English (en)
Chinese (zh)
Inventor
秦洪义
孙猛
陈记忠
毛树峰
张友坤
吴小杰
秦海玥
付海桀
刘猛
刘朝阳
孙植
郝小娟
Original Assignee
中铁七局集团有限公司
中铁七局集团郑州工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中铁七局集团有限公司, 中铁七局集团郑州工程有限公司 filed Critical 中铁七局集团有限公司
Priority to JP2023557692A priority Critical patent/JP2024508194A/ja
Publication of WO2023151702A1 publication Critical patent/WO2023151702A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • 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
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • 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
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith

Definitions

  • the present application relates to the technical field of railway bridge construction, in particular to a mounting device for a boom tray and a boom nut of a beam lifting machine.
  • the beam lifting machine is a kind of gantry crane specially designed for bridge construction.
  • the beam lifting machine is mainly composed of assembled main beams, outriggers, cranes, etc.
  • the components are connected by pin shafts and high-strength bolts, which are easy to disassemble and transport. , Compared with ordinary gantry cranes, it is convenient and quick to install, economical and practical, and is suitable for road and bridge construction units that often flow.
  • the beam generally has two spreaders, one spreader is equipped with 4 suspenders, and the two spreaders have a total of 8 suspenders.
  • a tray and a suspender nut need to be installed on the lower part of each suspender.
  • the weight of each tray is about 30-40 kg, and each boom nut weighs about 12-13 kg.
  • Labor intensity is big, laborious and laborious.
  • the purpose of the present application is to provide a mounting device for a boom tray and a boom nut of a beam lifting machine, so as to solve or alleviate the above-mentioned problems in the prior art.
  • the present application provides an installation device for a boom tray and a boom nut of a beam lifting machine, including: a fixed plate, a support beam, a sleeve, a telescopic column, a lower beam and a bracket, and one end of the support beam is connected to the sleeve The upper end of the upper end, the other end is connected with the sling for lifting the box girder of the beam lifting machine through the fixed plate; wherein, the sling lifts the box girder through the boom; One end of the beam is rotatably connected to the lower end of the telescopic column, and the other end of the lower beam is connected to the bracket; the lower beam can be rotated 90 degrees along the axis of the telescopic column to be located at the front of the spreader.
  • a U-shaped frame is formed together with the support beam and the telescopic column; the bracket is used to place the tray and the boom nut connected to the boom when the beam lifting machine lifts the box girder; the sleeve It is set with the telescopic column and can move relatively in the vertical direction, driving the bracket to move up and down in the vertical direction.
  • a plurality of first fixing holes are juxtaposed on the lower beam; correspondingly, the guide cylinder
  • a second fixing hole is provided, and the second fixing hole is adapted to the first fixing hole, so that the guide cylinder and the lower beam can be connected through the fixing rod through the first fixing hole and the second fixing hole.
  • the supporting beam is connected with the hanger for lifting the box girder of the beam lifting machine through the fixing plate, the hanger lifts the box girder through the boom, and the bracket is used to place the beam lifting machine The pallet and the boom nut connected with the boom when lifting the box girder.
  • One end of the support beam is connected to the upper end of the sleeve, and the other end is connected to the fixed plate; one end of the lower beam is connected to the lower end of the telescopic column, and the other end of the lower beam is connected to the bracket; the lower beam can rotate 90 degrees along the axis of the telescopic column to Located directly below the suspender boom, it forms a U-shaped frame together with the supporting beam and the telescopic column; the sleeve and the telescopic column are set together and can move relative to each other in the vertical direction, driving the bracket to move up and down in the vertical direction.
  • the support beam is connected with the spreader through the fixed plate, and after the pallet and the boom nut are placed, the lower beam drives the bracket to rotate 90 degrees, and the pallet and the boom nut are moved to the bottom of the spreader, and then the sleeve and telescopic
  • the column moves relatively in the vertical direction, drives the bracket to move up and down in the vertical direction, and adjusts the support height of the bracket, so that the height of the tray can be adjusted according to the installation height of the boom, and the tray can be lifted upwards, so no work is required Personnel carry pallets, which effectively reduces the burden on operators.
  • Fig. 1 is the assembly schematic diagram of the installation device of a kind of boom pallet of beam lifting machine and boom nut;
  • Fig. 2 is a structural schematic diagram of a mounting device for a boom tray and a boom nut of a beam lifting machine
  • Fig. 3 is the installation sketch map of support beam and sleeve
  • Figure 4 is a schematic diagram of the connection between the screw lifting mechanism and the telescopic column
  • Fig. 5 is the exploded schematic view of lower beam, guide cylinder and bracket
  • Fig. 6 is a partial view at A in the installation device of the boom tray and the boom nut of the beam lifting machine provided by the embodiment of Fig. 1;
  • Fig. 7 is a schematic diagram of placing a tray on a bracket according to some embodiments of the present application.
  • the pallet weighing 30-40 kg and the boom nut weighing about 12-13 kg are manually transported to the inside of the box girder, and are manually supported. Lift about 1.7 meters to realize the assembly of the tray and suspender nut with the suspender.
  • each spreader has four hangers, and the two spreaders have a total of 8 hangers.
  • Each hanger needs to be manually handled, and the lifting height of 1.7 meters is 30-40 kg.
  • 8 suspension rods need to install a pallet weighing 240-320 kg in total, and manual operation is also required when dismantling it. Therefore, the labor intensity of the installer is very high.
  • the installation device for the boom tray and the boom nut of the beam lifting machine includes: a support beam 4 , a lower beam 18 , a sleeve 6 , a telescopic column 10 , a fixed plate 1 and a bracket 23 .
  • One end of the support beam 4 is connected to the upper end of the sleeve 6, and the other end is connected to the sling for hoisting the box girder by the beam lifting machine through the fixed plate 1, and the sling lifts the box girder through the boom; one end of the lower beam 18 is rotatably connected to the telescopic column 10 The lower end of the lower beam 18 is connected to the bracket 23 at the other end; the bracket 23 is used to place the tray and the boom nut connected with the boom when the beam lifting machine lifts the box girder.
  • the lower crossbeam 18 can rotate 90 degrees along the axis of the telescopic column 10 to be located directly below the spreader boom, and form a U-shaped frame together with the support beam 4 and the telescopic column 10;
  • the relative movement in the direction drives the bracket 23 to move up and down in the vertical direction.
  • a base 2 is provided on the end of the support beam 4 connected to the hanger, and a through hole is provided on the base 2 along the circumferential direction, and correspondingly, a mounting screw hole is provided on the fixing plate 1 .
  • the fixing bolt 3 passes through the through hole on the base 2 and is screwed into the mounting threaded hole on the fixing plate 1. Since the fixed plate 1 is fixedly connected (for example, welded) with the sling, the support beam 4 will be fixed on the sling after the fixing bolt 3 is screwed into the mounting threaded hole of the fixed plate 1, thereby moving together with the sling.
  • the outer surface of the base 2 is fixedly connected with a plurality of ribs 5 for reinforcement, and the plurality of ribs 5 are evenly distributed along the circumferential direction of the support beam 4, and one side of the rib 5 is fixedly connected with the outer surface of the support beam 4, to support After the beam 4 is fixed, the stress is improved, the rigidity of the support beam 4 is increased, and the force cracking between the base 2 and the support beam 4 is avoided.
  • Cooperating with the fixing bolt 3, the stability of the whole device is ensured by stably fixing the base 2.
  • the through-holes on the base 2 are symmetrical along the up-down direction of the base 2 and arranged at intervals with the ribs 5, and the through-holes are long horizontal holes to adjust the installation and cooperation between the base 2 and the fixed plate 1, which can ensure accurate Alignment improves installation efficiency and speed.
  • the support beam 4 is connected to the sleeve 6 (for example, fixedly connected, inserted, etc.), and the sleeve 6 runs through the support beam 4; due to support The beam 4 is fixed on the spreader through the fixed plate 1, therefore, the relative movement of the sleeve 6 and the telescopic column 10 along the vertical direction will drive the telescopic column 10 to move up and down, and then drive the lower beam 18 connected to the lower end of the telescopic column 10 to move up and down Move, further drive the bracket 23 that is connected on the lower beam 18 to move up and down in the vertical direction. Thereby, the height of the pallet and the suspender nut placed on the bracket 23 and connected to the suspender can be adjusted in the vertical direction.
  • the height of the pallet and the boom nut can be adjusted according to the installation height of the boom, and the pallet can be lifted upwards. Lifting, effectively reducing the burden on operators.
  • the cross-sections of the sleeve 6 and the telescopic column 10 are all rectangular, which effectively avoids the possible displacement of the sleeve 6 in the circumferential direction when the telescopic column 10 moves relative to the up and down direction, and strengthens the sleeve 6 and the telescopic column 10.
  • the accuracy of the relative movement of the upper and lower directions, and then, the tray and the boom nut can be accurately adapted to the boom.
  • a lead screw lift is installed on the end of the support beam 4 close to the sleeve 6, and the lead screw lift drives the telescopic column 10 to slide relatively vertically in the sleeve 6 through the threaded rod 11; wherein, the threaded rod 11 Arranged side by side with the telescopic column 10 in parallel.
  • the rotary motion of the threaded rod nut is converted into the linear motion of the telescopic column 10 , so that the telescopic column 10 can move up and down in the sleeve 6 , and then the height position of the bracket 23 is adjusted.
  • the screw lifter is fixedly installed on the upper surface of the support beam 4, and one end of the threaded rod 11 passes through the support beam 4 and is connected to one end of the connecting rod 13 through a pin shaft, and the other end of the connecting rod 13 is connected to the telescopic column 10 through a pin shaft. Connected, the threaded rod 11 does not rotate. That is, the support pad 7 is fixedly connected to the middle part of the upper surface of the support beam 4 , and the lead screw lifter is screwed on the support pad 7 . Specifically, the four corners on the lead screw lifter are threaded through the positionable positioning bolts 9 , and one end of the positioning bolts 9 passes through the screw lifter 8 and is threadedly connected with the supporting backing plate 7 .
  • the internal worm wheel of the screw lifter 8 is connected with a slidable threaded rod 11, and the telescoping of the threaded rod 11 is realized by the rotation of the worm wheel.
  • the bottom of the threaded rod 11 is fixedly connected with an upper joint 12 of the connecting rod, and the upper joint 12 of the connecting rod is rotatably connected with one end of the connecting rod 13 through a pin shaft.
  • the end portion of connecting rod 13 is provided with the connecting joint of U-shaped opening, and the flat head of threaded rod 11 is inserted in the U-shaped opening, passes through the pin hole on the side wall of U-shaped opening and the connecting hole by pin shaft.
  • the joint 12 on the connecting rod is connected with the connecting part of the connecting rod 13 by coaxial rotation.
  • the other end of the connecting rod 13 is fixedly connected with the lower joint 14 of the U-shaped connecting rod for positioning, and the side wall of the U-shaped opening of the lower joint 14 of the U-shaped connecting rod is provided with a through hole;
  • the fixed connecting plate 15 is inserted in the U-shaped opening of the lower joint 14 of the U-shaped connecting rod, so that the pin hole on the fixed connecting plate 15 is coaxial with the through hole on the lower joint 14 of the U-shaped connecting rod, and then the pin is inserted to realize
  • the lower joint 14 of the U-shaped connecting rod is connected with the rotation of the fixed connecting plate 15 .
  • the threaded rod 11 is connected with the telescopic column 10 through the connecting rod 13, so that the threaded rod 11 drives the telescopic column 10 to move up and down during the up-and-down movement.
  • the lead screw elevator drives the threaded rod 11 to move up and down through the worm gear mechanism.
  • the lower part of the side wall of the telescopic column 10 is installed side by side with two supporting lugs 25 along the up and down direction. There are pin holes on the supporting lugs 25 for installing the auxiliary screw lifter 20.
  • Rotating positioning shaft 21; correspondingly, the mounting device of the boom tray and the boom nut of the beam lifting machine also includes: an auxiliary screw lifter 20, and the auxiliary screw lifter 20 is installed on two support lugs 25 by rotating the base, and the auxiliary screw
  • the transmission lead screw on the rod lifter 20 is connected with the pin shaft of the positioning shaft 21, and the auxiliary screw lifter 20 drives the lower crossbeam 18 to rotate 90 degrees along the axis of the telescopic column 10 through the telescopic movement of the drive lead screw, and the lower crossbeam 18 and the bracket 23 Can be located directly under the spreader boom.
  • the auxiliary screw lifter 20 drives the transmission lead screw to move through the worm gear mechanism.
  • the lower beam 18 and the bracket 23 will rotate along the axis of the telescopic column 10, and the auxiliary screw lifter 20 will rotate along the axis of the telescopic column 10.
  • the axis that is rotatably connected with the support ear plate 25 rotates synchronously until the bracket 23 is rotated 90 degrees to form a U-shaped frame together with the support beam 4 and the telescopic column 10 .
  • the lower end of the telescopic column 10 is provided with a fixed shaft 16, and the lower beam 18 is provided with a fixed sleeve 17, and the fixed shaft 16 is rotatably connected with the fixed sleeve 17, so that the lower beam 18 can rotate along the axis of the fixed shaft 16 ,
  • the bottom of telescopic column 10 is fixedly connected to fixed shaft 16, and the bottom of the outer surface of fixed shaft 16 is provided with external thread;
  • a fixed sleeve 17 is fixedly connected, and the axis of fixed sleeve 17 is along the vertical direction.
  • the fixed shaft 16 insert solid After the fixed sleeve 17, the end of the fixed shaft 16 stretches out the fixed sleeve 17, and is connected with the external thread of the fixed shaft 16 outer surface by the stop nut 19, and the fixed sleeve 17 and the fixed shaft 16 are fixed to prevent the fixed sleeve 17 from slipping off.
  • the fixed shaft 16 is connected to the fixed sleeve 17 in rotation, the relative rotation between the lower beam 18 and the fixed shaft 16 adjusts the position of the lower beam 18 on the horizontal plane, and the bracket 23 is adjusted to the bottom of the boom, which is convenient Installation of tray and boom nuts with booms.
  • connection between the bracket 23 and the lower beam 18 may be a fixed connection or a detachable connection.
  • a counterweight can also be placed on the lower beam 18, so as to realize the force balance of the installation device through the counterweight.
  • One end of the connecting bracket 23 on the lower beam 18 and the end where the counterweight unit is placed can adopt the same connection structure, or a different connection structure.
  • the connection between the bracket 23 and the lower beam 18 adopts a fixed connection.
  • One end where the counterweight unit is placed adopts a detachable and adjustable movable connection.
  • the installation device for the boom tray and the boom nut of the beam lifting machine further includes: a counterweight unit, which is located on the lower beam 18 and on the other side of the lower beam 18 .
  • the counterweight unit and the bracket 23 are symmetrically distributed on both sides of the telescopic column 10 , and as the lower beam 18 rotates around the fixed shaft 16 , the counterweight unit rotates together, thereby enhancing the structural stability of the installation device.
  • one end of the counterweight unit on the lower beam 18 is connected with the lower beam fixing sleeve 17 through the guide cylinder, and is connected with the fixed shaft 16 in rotation, and the guide cylinder is fitted with the end of the counterweight unit on the lower beam 18, so that the lower beam 18 The counterweight unit placed on the beam 18 can be removed.
  • the configuration unit is placed on the counterweight shelf, and the guide cylinder and the counterweight unit are integrated to further strengthen the installation device structural stability.
  • the counterweight unit is provided with counterweights as required, and the counterweights can be adjusted according to the weights of the pallets and suspender nuts placed on the bracket 23 .
  • the end of the lower crossbeam 18 where the counterweight unit is placed is also provided with a positioning pin, wherein the positioning pin is used for inserting and placing the bracket of the counterweight unit, so that it can be disassembled during transportation. Car; during use, it is easy to disassemble and assemble quickly.
  • the bracket 23 is a frame structure, which is welded by section bars, and the The length direction is divided into three squares, wherein, the two squares at both ends are hollow, and a nut support plate 26 is hoisted through the support plate guide rod 27, and the suspender nut is placed on the nut support plate 26, and the corresponding nut support plate 26 above Place the pallet on the frame and fix it.
  • the pallet is automatically installed on the spreader boom, and then the boom nut on the nut supporting plate 26 is connected to the boom
  • the lower part is threaded; after the installation is completed, the lower beam 18 and the tray need to be lowered by about 15 cn, so that the tray is separated from the bracket 23.
  • the supporting plate guide rod 27 is fixedly connected to the bracket 23 through the fixing nut 28, and the nut supporting plate 26 is a flat-shaped structure with an upper end opening, so as to prevent the suspension rod nut placed on the flat-shaped structure from falling;
  • the side wall of the type structure is provided with a hanging hole, and the lower surface of the bracket 23 is welded with a hanging ring 29.
  • the hanging hole and the hanging ring 29 are connected by a tension spring 30 to align the suspension rod nut placed on the type structure with the hanging ring 29.
  • Tool suspender contact force is buffered, prevents bracket 23 from being stressed too much.
  • the number of tension springs 30 is the same as that of the pallet guide rods 27 , and each tension spring 30 is installed side by side with one pallet guide rod 27 .
  • Two locking nuts 31 are installed side by side at the lower end of the supporting plate guide rod 27. Under the action of the tension spring 30, before the suspender nuts placed on the suspender structure do not touch the suspender suspender, the lower surface of the nut supporting plate 26 is in contact with the suspender suspender.
  • the spacing between the lock nuts 31 is [10,20]mm.
  • each nut supporting plate 26 is hoisted on the bracket by four supporting plate guide rods 27, and the four supporting plate guiding rods 27 are detachably connected with the bracket, and are evenly distributed along the axial direction of the nut supporting plate 26 ( Be positioned at the four jiaos of nut supporting plate 26); Be provided with through hole in the middle part of nut supporting plate 26, the diameter of through hole is greater than the diameter of suspender boom.
  • the tray can be circular or rectangular.
  • the circular tray is positioned through the positioning column 32 installed on the frame of the bracket 23 to prevent the circular tray from slipping.
  • four positioning columns 32 are evenly distributed in the axial direction on the frames corresponding to the hollow squares at both ends of the bracket 23, and the centers of the four positioning columns 32 are coaxial with the center of the nut support plate 26, and each positioning The column 32 is [10, 15] mm away from the outer edge of the circular tray, so that the circular tray can be placed and installed in alignment.
  • the positioning column 32 is in the shape of a stepped shaft, and after the small end passes through the frame structure of the bracket 23 , it is fixed with the bracket 23 by a fastening nut 33 .
  • the device is first fixed on one side of the spreader by means of the fixing bolt 3, and the counterweight is properly set on the other side of the spreader to ensure the flatness of the spreader.
  • Balance When the bridge box girder is hoisted by the beam lifting machine spreader, the pallets and suspender nuts required for hoisting are placed on the bracket 23 and the nut bracket 26 respectively; Adjust to the vertical position with the support beam 4, then lower the spreader on the beam surface, about 5cm away from the beam surface, start the auxiliary screw lifter 20 to rotate the lower beam 18 and the bracket 23 by 90 degrees, so that the bracket 23 is in the position of the spreader Then, start the screw lifter 8 to adjust the height of the bracket 23.
  • Crossbeam 18 and bracket 23 (generally need to drop 15cm), make bracket 23 completely break away from pallet, the installation process of pallet and suspender nut is finished, and beam lifting machine promotes box girder, and this installation device does not need to move out box girder inside.
  • the removal process for the tray and boom nuts is the reverse of the installation process.
  • the process of lifting the beam is over.
  • the installation device does not need to be removed from the spreader, but the pallet and suspender nut should be reliably fixed with the bracket 23 to prevent the pallet and suspender Nut comes off.
  • the center of the support beam 4 should be installed facing the suspender, and two installation devices are installed on one spreader, but the directions of the support lugs 25 of the two installation devices are different, and the support lugs of the two installation devices 25 are installed bilaterally symmetrically along the extension direction of the support beam 4. After two mounting devices on the same spreader are installed, their supporting lugs 25 face each other. Before the lower beam 18 of the device rotates, the lower beams 18 of the two installation devices should be staggered in the height direction.
  • the installation device on the left turns 90 degrees to the left and turns to the bottom of the two suspenders on the left; the installation device on the right turns 90 degrees to the right degrees, turn under the two booms on the right.
  • a set of beam lifting machine has two slings, and generally 4 installation devices need to be installed; the screw elevators (screw elevator 8 and auxiliary screw elevator 20) in the installation device are all driven by electric motors, and adopt wireless control operations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Bridges Or Land Bridges (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

Dispositif de montage pour une palette de tige de levage et écrou de tige de levage d'une grue à poutre. Dans le dispositif de montage, une extrémité d'une poutre de support est raccordée au moyen d'une plaque de fixation à un palonnier d'une grue à poutre pour lever une poutre-caisson, l'autre extrémité de la poutre de support étant soudée à un manchon vertical ; une extrémité d'une traverse inférieure est raccordée à une extrémité inférieure d'un montant vertical télescopique et peut tourner, l'autre extrémité de la traverse inférieure étant raccordée à un support ; après une rotation de 90 degrés de la traverse inférieure le long d'un axe du montant vertical télescopique, la traverse inférieure, la poutre de support et le montant vertical télescopique forment ensemble un cadre sous la forme d'un caractère chinois « 匚 » ; et le manchon et le montant vertical télescopique sont agencés de manière emmanchée et peuvent se déplacer l'un par rapport à l'autre dans une direction verticale de façon à entraîner le déplacement du support vers le haut et vers le bas dans la direction verticale. Par conséquent, lorsqu'une palette et un écrou de tige de levage sont en place, la traverse inférieure entraîne la rotation de 90 degrés du support, de telle sorte que la palette et l'écrou de tige de levage sont déplacés pour être au-dessous d'une tige de levage à l'intérieur d'une poutre-caisson ; ensuite, le manchon et le montant vertical télescopique se déplacent l'un par rapport à l'autre dans la direction verticale de façon à régler une hauteur de support du support ; et la palette et l'écrou de tige de levage sont soulevés vers le haut. De cette manière, l'opérateur n'a rien à transporter et à soulever, et la charge sur l'opérateur est donc efficacement réduite.
PCT/CN2023/083560 2022-05-17 2023-03-24 Dispositif de montage pour palette de tige de levage et écrou de tige de levage de grue à poutre WO2023151702A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023557692A JP2024508194A (ja) 2022-05-17 2023-03-24 桁吊り上げ装置のブームトレイ及びブームナットの取り付け装置

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CN202210541987.2 2022-05-17
CN202210541987.2A CN115057336B (zh) 2022-05-17 2022-05-17 一种提梁机吊杆托盘和吊杆螺母的安装装置

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PCT/CN2023/083560 WO2023151702A1 (fr) 2022-05-17 2023-03-24 Dispositif de montage pour palette de tige de levage et écrou de tige de levage de grue à poutre

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JP (1) JP2024508194A (fr)
CN (1) CN115057336B (fr)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115057336B (zh) * 2022-05-17 2023-04-07 中铁七局集团郑州工程有限公司 一种提梁机吊杆托盘和吊杆螺母的安装装置

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