CN107628567B - Lifting method of crown block track beam - Google Patents
Lifting method of crown block track beam Download PDFInfo
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- CN107628567B CN107628567B CN201710917403.6A CN201710917403A CN107628567B CN 107628567 B CN107628567 B CN 107628567B CN 201710917403 A CN201710917403 A CN 201710917403A CN 107628567 B CN107628567 B CN 107628567B
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- concrete column
- track beam
- jack
- crown block
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Abstract
The invention provides a lifting method of a crown block track beam, which comprises the following steps: a. manufacturing a jack support; b. installing a jack support; c. after the crown block stops using, jacks are placed on the support plates of each set of jack support, and the brake plate and the brake beam are removed; d. mounting protective devices on two sides of the crown block track beam, lifting the crown block track beam, and simultaneously starting all jacks to enable the jacks to be slowly lifted; e. when the crown block track beam is jacked to the designed elevation by the jack, a base plate is placed between the embedded part and the bottom end of the crown block track beam, then the jack is loosened, and the elevation of the crown block track beam is adjusted until the elevation reaches the designed elevation; f. adjusting the levelness of the brake beam and the platform plate, and recovering a connection point between the brake beam and the concrete column, a connection point between the platform plate and the concrete column and a connection point between the brake plate and the concrete column; g. and (4) dismantling the jack, the jack support and the protection devices on two sides of the crown block track beam to complete the lifting work of the crown block track beam.
Description
Technical Field
the invention relates to a construction technology of a crown block track beam, in particular to a lifting method of the crown block track beam.
Background
The overhead traveling crane generally refers to a crane operating at high altitude, and includes a single-beam crane and a double-beam crane, and is commonly used in the field of construction machinery in the industrial field. The overhead traveling crane is used for conveying large-scale equipment or large-scale materials. The overhead traveling crane is hung under the overhead traveling crane track for conveying, so that the overhead working amount of workers is greatly reduced, and the working efficiency is effectively improved. The crown block track beam plays a crucial role in the running of a crown block, and in the installation and construction of the crown block track, a brake plate is arranged at the connection part of an embedded part embedded in a concrete column and the crown block track beam so as to increase the connection stability between the crown block track beam and the concrete column; the bottom of the overhead traveling crane track beam is provided with a brake beam, the top of the overhead traveling crane track beam is provided with a platform plate to increase the rigidity of the overhead traveling crane track beam, and the end part of the brake beam is fixedly connected with a concrete column. Although a plurality of measures for increasing the rigidity of the overhead traveling crane rail beam are provided, in a long-term use project of the overhead traveling crane rail, the levelness of the overhead traveling crane rail beam is out of tolerance due to factors such as foundation settlement, and the altitude deviation is large. The conventional general method for correcting the height deviation of the crown block track beam is to lift the crown block track beam by a crane, and the method has high cost, long construction period and low safety.
Disclosure of Invention
The invention aims to provide a lifting method of a crown block track beam, which aims to solve the problems of high cost, long construction period and poor safety in the conventional lifting method of the crown block track beam.
The purpose of the invention is realized as follows:
A lifting method of a crown block track beam comprises the following steps:
a. manufacturing a jack support: each set of jack support comprises a vertically arranged mounting plate, a support plate horizontally arranged at the upper part of the mounting plate and a plurality of reinforcing rib plates arranged at the connecting part of the support plate and the mounting plate, wherein a bending right-angle plate which is bent towards one side of the mounting plate to form a right angle is integrally formed at the top end of the mounting plate;
b. Installing a jack support: after the jack supports are manufactured, respectively installing a set of jack supports on two opposite side surfaces of the top end of a concrete column, enabling a bending right-angle plate of each jack support to face the center of the concrete column, oppositely arranging the two sets of jack supports on the same concrete column, and attaching the vertical side surface of the installation side of the bending right-angle plate of the installation plate to the side surface of the corresponding side of the concrete column; fixedly connecting the horizontal free end surface of the bent right-angle plate of the mounting plate with the side surface of the corresponding side of the embedded part on the concrete column in a welding manner;
c. After the jack supports are installed, after the overhead travelling crane stops being used, jacks for jacking the overhead travelling crane track beam are placed on the support plates of each set of jack supports, and the brake plate and the brake beam are removed after the jacks are installed;
d. After the brake plate and the brake beam are completely removed, protective devices are arranged on two sides of the overhead traveling crane track beam, the overhead traveling crane track beam can be lifted after the protective devices are completely arranged, all jacks used for jacking the overhead traveling crane track beam are started simultaneously, the jacks are enabled to be jacked slowly, the jacking speed of each jack is monitored at any time, and the jacking speed of each jack is enabled to be equal, so that each jack is enabled to be jacked synchronously;
e. when the crown block track beam is jacked to a designed elevation by a jack, a base plate is placed between the embedded part and the bottom end of the crown block track beam, then the jack is loosened, the elevation of the crown block track beam is adjusted until the elevation reaches the designed elevation, and after the height of the crown block track beam reaches the designed elevation, an operator fixedly connects the base plate with the embedded part in a welding mode;
f. Adjusting the levelness of the brake beam and the platform plate, recovering the connection point between the brake beam and the concrete column, the connection point between the platform plate and the concrete column and the connection point between the brake plate and the concrete column after the levelness is adjusted, and enabling the connection strength between the brake beam and the concrete column, the connection strength between the platform plate and the concrete column and the connection strength between the brake plate and the concrete column to reach the standard requirements;
g. And dismantling the jack, the jack support and the protective devices on two sides of the crown block track beam to complete the lifting work of the crown block track beam.
in the step e, when the crane track beam is lifted and each connection point of the brake plate and the concrete column exceeds the corresponding edge of the embedded part, the anchor ear is fixedly arranged on the concrete column, and the brake plate is fixedly connected with the anchor ear so as to realize the fixed connection between the brake plate and the concrete column.
the invention provides a method for correcting the problems of over-levelness and large height deviation of a crown block track beam caused by factors such as foundation settlement and the like. The problems of high cost, long construction period and poor safety in a universal lifting method by adopting a crane are solved. The method has the advantages of low cost, short construction period, simple and safe construction, easy operation and strong popularization value.
the method is simple and easy to implement, the operation can be carried out according to the method without special training, and general technicians can master the technology of the invention and carry out actual operation, so the technical data and the operation process of the invention have great popularization value.
Drawings
fig. 1 is a schematic structural view of the present invention.
fig. 2 is a side view of the jack stand of the present invention.
fig. 3 is a top view of the jack stand of the present invention.
Fig. 4 is a schematic structural diagram of the hoop of the present invention.
Fig. 5 is a top view of the hoop of the present invention.
in the figure: 1. mounting a plate; 2. a support plate; 3. a reinforcing rib plate; 4. bending the right-angle plate; 5. concrete columns; 6. embedding parts; 7. a connecting plate; 8. a crown block track beam; 9. a jack; 10-1, a tightening piece; 10-2 and an expansion bolt.
Detailed Description
as shown in fig. 1 to 5, a method for lifting a crown block rail beam includes the following steps:
a. Manufacturing a jack support: each set of jack support includes vertical mounting panel 1 that sets up, the level sets up extension board 2 on mounting panel 1 upper portion, sets up a plurality of reinforcing floor 3 at extension board 2 and the junction of mounting panel 1, and reinforcing floor 3's vertical cross-section is right triangle, and reinforcing floor 3's a right-angle side meets through welded mode and extension board 2's bottom surface, and its another right-angle side meets through welded mode and mounting panel 1's vertical face. Top integrated into one piece at mounting panel 1 is provided with and is right angled bending right-angle board 4 to mounting panel 1 lateral buckling, and the department of buckling of bending right-angle board 4 adopts the clod wash to guarantee the tensile strength of jack support. In this embodiment, the strip 2 is disposed on the upper side of one side of the mounting plate 1 and the bent square 4 is disposed on the top of the opposite side of the mounting plate 1 from the strip mounting side.
b. installing a jack support: after the jack support preparation finishes, respectively install one set of jack support on two relative sides on concrete column 5 top, with the 4 centers towards concrete column 5 of the angle of bending of jack support, two sets of jack supports on same concrete column 5 set up relatively, with the vertical side of the 4 installation sides of the angle of bending of mounting panel 1 and the side laminating setting that concrete column 5 corresponds the side. And fixedly connecting the horizontal free end surface of the bent right-angle plate 4 of the mounting plate 1 with the side surface of the corresponding side of the embedded part 6 on the concrete column in a welding mode. The built-in fitting link of the right-angle board 4 of buckling of mounting panel 1 sets up to the hypotenuse, and the right-angle board link of buckling of the correspondence of built-in fitting 6 sets up to vertical limit, forms unilateral V-arrangement welding groove between the right-angle board 4 of buckling of mounting panel 1 and the built-in fitting 6 that corresponds, and the unilateral V-arrangement welding groove between the right-angle board 4 of buckling of mounting panel 1 and the built-in fitting 6 that corresponds adopts the form welding of full weld. The top overlap joint of two relative angle plates 4 of buckling at same concrete column 5 has rectangular shape connecting plate 7 of two parallels, and every connecting plate 7 both ends are all through full-welded welding mode and the 4 fixed connection of buckling of corresponding angle plate, and the long limit of connecting plate 7 is mutually perpendicular with the vertical side of the 4 free ends of buckling angle plate, and two connecting plates 7 distribute in overhead traveling crane track beam 8's width direction's both sides.
c. After the jack supports are installed, after the overhead travelling crane stops being used, jacks 9 used for jacking the overhead travelling crane track beam 8 are placed on the supporting plates 2 of each set of jack supports, the tonnage of each jack is calculated and selected according to the weight of the overhead travelling crane track beam 8, and the safety coefficient of each jack 9 is larger than 2. And after the jack 9 is installed, the brake plate and the brake beam are detached so as to ensure that the overhead traveling crane track beam 8 can be freely lifted without restriction. When the connection point between the brake beam and the concrete column 5 is removed, the hand chain hoist is adopted to hoist the side of the brake beam far away from the crown block track beam 8 so as to avoid the overturning of the crown block track beam 8, the brake beam and the whole system.
d. After the brake plate and the brake beam are detached, protective devices are arranged on two sides of the crown block track beam to prevent the crown block track beam from overturning towards two sides in the width direction. The protection device is a limit plate or a limit rod. After the protective device is installed, the lifting operation of the overhead traveling crane track beam can be carried out, all jacks used for jacking the overhead traveling crane track beam are started simultaneously, the jacks are enabled to jack slowly, the jacking speed of each jack is monitored at any time, the jacking speed of each jack is enabled to be equal, so that each jack is enabled to keep jacking synchronously, and the overhead traveling crane track beam and the whole system are prevented from being locally damaged or toppled.
e. When overhead traveling crane track roof beam 8 was jacked to the elevation of design by the jack, place the backing plate between the built-in fitting and the bottom of overhead traveling crane track roof beam, then loosen the jack, whether the elevation of measuring overhead traveling crane track roof beam 8 reaches the designing requirement, the elevation of adjustment overhead traveling crane track roof beam 8 is until it reaches the elevation of design, can carry out adjustment many times when its overhead traveling crane track roof beam 8 is out of tolerance, the quantity of backing plate is one or two at most, when the quantity of backing plate is two, the thickness of the backing plate that is located the upper portion is greater than the thickness of the backing plate that is located the lower part, the advantage is very obvious when this kind of design of backing plate is handling overhead traveling crane track roof beam 8 elevation out of tolerance especially out of tolerance scope great, the deflection of backing plate has been reduced, the sinking of overhead traveling crane track roof beam has effectively been prevented, the level. According to the traditional method, the base plates are additionally arranged below the track, the number of the base plates is not limited, and the thickness of the base plate at the bottom is larger than that of the base plate at the upper part, so that the service life of the track beam of the overhead traveling crane is seriously influenced, the track beam of the overhead traveling crane is broken, the wheels of the overhead traveling crane are seriously abraded, the overhead traveling crane runs in an unbalanced manner, and the overhead traveling crane falls off in the running process if serious. After the height of the crown block track beam reaches the designed elevation, an operator fixedly connects the base plate with the embedded part 6 in a welding mode.
as shown in fig. 4 and 5, when the crane track beam is lifted and each connection point of the braking plate and the concrete column exceeds the corresponding edge of the embedded part, the anchor ear is fixedly arranged on the concrete column, and the braking plate is fixedly connected with the anchor ear so as to realize the fixed connection between the braking plate and the concrete column. In this embodiment, when the height that the crane track beam 8 needs to be lifted is higher than the height of the embedded part 6 in the vertical direction, an anchor ear is fixedly arranged on the concrete column 5, and the brake plate is fixedly arranged between the crane track beam 8 and the anchor ear. The hoop comprises a hooping body sleeved on the outer side of the concrete column 5 and a plurality of expansion bolts 10-2 which are arranged on each side face of the hooping body and are used for fixedly connecting the hooping body to the concrete column, the hooping body is a rectangular cylinder body which is surrounded by four hooping sheets 10-1 and has two open ends, the size of the inner edge of the horizontal section of the hooping body is equal to that of the corresponding edge of the horizontal section of the concrete column 5, each hooping sheet 10-1 is attached to the side face of the corresponding side of the concrete column, the hooping sheet 10-1 is a steel plate, and each hooping sheet 10-1 is fixedly connected with the adjacent hooping sheet in a welding mode. When the anchor ear is installed, each tightening piece 10-1 is fixedly connected with the corresponding side of the concrete column by using the expansion bolts 10-2, when all four tightening pieces 10-1 are fixedly arranged on the concrete column 5, any two adjacent tightening pieces are fixedly connected in a welding mode, and a fillet weld for welding is arranged between each tightening piece 10-1 and the adjacent tightening piece.
f. The levelness of the brake beam and the platform plate is adjusted, after the levelness is adjusted, the connection point between the brake beam and the concrete column, the connection point between the platform plate and the concrete column and the connection point between the brake plate and the concrete column are recovered, and the connection strength of the connection between the brake beam and the concrete column, the connection strength of the platform plate and the concrete column and the connection strength of the brake plate and the concrete column all meet the standard requirements.
g. and (4) dismantling the jack, the jack support and the protection devices on two sides of the crown block track beam to complete the lifting work of the crown block track beam.
Claims (1)
1. A lifting method of a crown block track beam is characterized by comprising the following steps:
a. Manufacturing a jack support: each set of jack support comprises a vertically arranged mounting plate, a support plate horizontally arranged at the upper part of the mounting plate and a plurality of reinforcing rib plates arranged at the connecting part of the support plate and the mounting plate, wherein a bending right-angle plate which is bent towards one side of the mounting plate to form a right angle is integrally formed at the top end of the mounting plate;
b. Installing a jack support: after the jack supports are manufactured, respectively installing a set of jack supports on two opposite side surfaces of the top end of a concrete column, enabling a bending right-angle plate of each jack support to face the center of the concrete column, oppositely arranging the two sets of jack supports on the same concrete column, and attaching the vertical side surface of the installation side of the bending right-angle plate of the installation plate to the side surface of the corresponding side of the concrete column; fixedly connecting the horizontal free end surface of the bent right-angle plate of the mounting plate with the side surface of the corresponding side of the embedded part on the concrete column in a welding manner;
c. after the jack supports are installed, after the overhead travelling crane stops being used, jacks for jacking the overhead travelling crane track beam are placed on the support plates of each set of jack supports, and the brake plate and the brake beam are removed after the jacks are installed;
d. After the brake plate and the brake beam are completely removed, protective devices are arranged on two sides of the overhead traveling crane track beam, the overhead traveling crane track beam can be lifted after the protective devices are completely arranged, all jacks used for jacking the overhead traveling crane track beam are started simultaneously, the jacks are enabled to be jacked slowly, the jacking speed of each jack is monitored at any time, and the jacking speed of each jack is enabled to be equal, so that each jack is enabled to be jacked synchronously;
e. When the crown block track beam is jacked to a designed elevation by a jack, a base plate is placed between the embedded part and the bottom end of the crown block track beam, then the jack is loosened, the elevation of the crown block track beam is adjusted until the elevation reaches the designed elevation, and after the height of the crown block track beam reaches the designed elevation, an operator fixedly connects the base plate with the embedded part in a welding mode; the number of the backing plates is at most one or two, and when the number of the backing plates is two, the thickness of the backing plate at the upper part is larger than that of the backing plate at the lower part;
f. Adjusting the levelness of the brake beam and the platform plate, recovering the connection point between the brake beam and the concrete column, the connection point between the platform plate and the concrete column and the connection point between the brake plate and the concrete column after the levelness is adjusted, and enabling the connection strength between the brake beam and the concrete column, the connection strength between the platform plate and the concrete column and the connection strength between the brake plate and the concrete column to reach the standard requirements;
g. the jacks, the jack supports and the protection devices on two sides of the overhead traveling crane track beam are dismantled to complete the lifting work of the overhead traveling crane track beam, so that the problems of poor levelness and large height deviation of the overhead traveling crane track beam caused by foundation settlement are solved;
In the step e, when the height of the crane track beam needing to be lifted is higher than the height of the embedded part in the vertical direction, an anchor ear is fixedly arranged on the concrete column, and a brake plate is fixedly arranged between the crane track beam and the anchor ear; the hooping comprises a hooping body sleeved outside the concrete column and a plurality of expansion bolts arranged on each side face of the hooping body and used for fixedly connecting the hooping body to the concrete column, the hooping body is a rectangular cylinder body which is formed by four hooping sheets in a surrounding mode and has two open ends, the size of the inner edge of the horizontal section of the hooping body is equal to the size of the corresponding edge of the horizontal section of the concrete column, each hooping sheet is attached to the side face of the corresponding side of the concrete column, the hooping sheet is a steel plate, and each hooping sheet is fixedly connected with the adjacent hooping sheet in a welding mode; when the staple bolt is installed, each tightening piece is fixedly connected with the corresponding side of the concrete column by the aid of the expansion bolts, when the four tightening pieces are all fixedly arranged on the concrete column, any two adjacent tightening pieces are fixedly connected by the aid of a welding mode, and a fillet weld used for welding is arranged between each tightening piece and the adjacent tightening piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710917403.6A CN107628567B (en) | 2017-09-30 | 2017-09-30 | Lifting method of crown block track beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710917403.6A CN107628567B (en) | 2017-09-30 | 2017-09-30 | Lifting method of crown block track beam |
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| Publication Number | Publication Date |
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| CN107628567A CN107628567A (en) | 2018-01-26 |
| CN107628567B true CN107628567B (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710917403.6A Active CN107628567B (en) | 2017-09-30 | 2017-09-30 | Lifting method of crown block track beam |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2460505Y (en) * | 2000-12-29 | 2001-11-21 | 吴岳豪 | Lifting device with automait balance and turn back device |
| CN1159505C (en) * | 2002-03-26 | 2004-07-28 | 中国铝业股份有限公司 | Method for integral jacking roof of reinforced concrete pile single storey industry workshop |
| DE10245515B4 (en) * | 2002-09-27 | 2005-05-25 | Noell Crane Systems Gmbh | Load-handling crane and trolley handling equipment |
| CN2723411Y (en) * | 2004-07-27 | 2005-09-07 | 竞铭机械股份有限公司 | Transversely moving structure for overhead travelling crane |
| US9205772B2 (en) * | 2011-06-14 | 2015-12-08 | Murata Machinery, Ltd. | Movable platform, overhead traveling vehicle system, and method for vertically moving overhead traveling vehicle |
| JP5840928B2 (en) * | 2011-11-09 | 2016-01-06 | 鹿島建設株式会社 | Portal crane and widening method of portal crane |
| CN206368540U (en) * | 2016-12-01 | 2017-08-01 | 河北二十冶建设有限公司 | Concrete post construction jacking bracket |
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2017
- 2017-09-30 CN CN201710917403.6A patent/CN107628567B/en active Active
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