CN110386557B - Construction method and construction equipment for single-door crane to fall beam at cross-internal oblique crossing angle - Google Patents
Construction method and construction equipment for single-door crane to fall beam at cross-internal oblique crossing angle Download PDFInfo
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- CN110386557B CN110386557B CN201910718682.2A CN201910718682A CN110386557B CN 110386557 B CN110386557 B CN 110386557B CN 201910718682 A CN201910718682 A CN 201910718682A CN 110386557 B CN110386557 B CN 110386557B
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- gun carriage
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- Architecture (AREA)
- Mechanical Engineering (AREA)
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- Structural Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The embodiment of the invention discloses a construction method and construction equipment for a single-door crane to fall beams at an angle of crossing obliquely in a span, wherein the construction method comprises the following steps: conveying the beam transporting gun carriage to a position between crane rails; operating the gantry crane to lift the prefabricated U-shaped beam from the beam-making pedestal; operating the gantry crane to move along the crane track and enabling the fixed end lifting appliance to be located above the rear car of the beam transporting gun carriage; operating the fixed end lifting appliance to be separated from one end of the prefabricated U-shaped beam and lifting the fixed end lifting appliance; operating the gantry crane to move so that the rotatable lifting appliance and the other end of the prefabricated U-shaped beam are positioned above the front vehicle of the beam transporting gun carriage; operating the rotatable sling to disengage from the other end of the prefabricated U-beam and raising the rotatable sling. The beam body in the conveying process is rotated by the rotatable lifting appliance ingeniously, so that the beam conveying gun carriage after beam falling can conveniently drive away from the beam falling area, and the operation efficiency is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of geotechnical construction, in particular to a construction method and construction equipment for a single-door crane to fall beams at an angle of crossing obliquely in a span way.
Background
In the construction of transporting and erecting beams, a portal crane and a beam transporting gun carriage are often used as process equipment for transporting the precast beams, generally, a portal crane lifting beam is mostly adopted, the gantry crane is moved forwards to the position above the beam transporting gun carriage which is orthogonally parked with a track, and the precast beams are placed on beam transporting brackets of a front vehicle and a rear vehicle of the beam transporting gun carriage. However, the beam type of the engineering design is complex and variable, the length is different, and the design is limited by the fact that the large equipment leasing market cannot achieve the flexibility, the variability and the face of the specification and the size, so the situation that the total length of the outline exceeds the span of the portal crane during the loading operation of the beam transporting gun carrier often occurs, and the beam falling mode of the traditional beam transporting gun carrier orthogonal to the track is not suitable. Temporary purchasing and replacing large equipment wastes time and labor for construction projects, and the cost is wasted due to the fact that the large equipment with higher specification size and grade is leased, so that the common beam transporting gun carriage and the beam falling construction technology parallel to the main beam of the portal crane have great limitation.
Disclosure of Invention
Therefore, the embodiment of the invention provides a construction method and construction equipment for falling a beam by a single-door crane at an angle of crossing obliquely inside a span, which can solve the problem that the traditional beam-transporting gun carriage and track orthogonal beam-falling mode is limited by large-scale equipment.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
according to a first aspect of the embodiments of the invention, a construction method for a single-door crane to drop beams at an internal crossing angle is provided, the construction method is carried out by adopting construction equipment, the construction equipment comprises a double-hanger portal crane, a crane track, a rotatable hanger, a fixed-end hanger and a beam transporting gun carriage, the double-hanger portal crane moves along the crane track, the beam transporting gun carriage comprises a beam transporting gun carriage front carriage and a beam transporting gun carriage rear carriage, the front car and the rear car of the beam transporting gun carriage are arranged at intervals, the total outline length during the loading operation of the beam transporting gun carriage is greater than the span of the double-lifting-tool portal crane, the rotatable lifting appliance and the fixed end lifting appliance are respectively suspended at two sides of the double-lifting appliance gantry crane in the horizontal direction, the rotatable lifting appliance can horizontally move, move up and down and rotate under the control of the double-lifting-appliance portal crane, the fixed end lifting appliance can move horizontally and vertically under the control of a double-lifting appliance portal crane; the construction method comprises the following steps:
a. conveying a beam transporting gun carriage front vehicle and a beam transporting gun carriage rear vehicle between crane rails, adjusting the length direction of the beam transporting gun carriage front vehicle to be obliquely crossed with the crane rails, and staggering the beam transporting gun carriage rear vehicle and the beam transporting gun carriage front vehicle along the extension direction of the crane rails; operating the gantry crane, the rotatable lifting tool and the fixed end lifting tool to lift the prefabricated U-shaped beam from the beam manufacturing pedestal;
b. operating the gantry crane to move along a crane rail, enabling the fixed end lifting appliance to be located above the rear car of the beam transporting gun carriage, and controlling the fixed end lifting appliance to enable one end of the prefabricated U-shaped beam to fall onto the rear car of the beam transporting gun carriage;
c. operating the fixed end lifting appliance to be separated from one end of the prefabricated U-shaped beam and lifting the fixed end lifting appliance;
d. operating the gantry crane to move so that the rotatable lifting appliance and the other end of the prefabricated U-shaped beam are located above the beam transporting gun carriage front vehicle, simultaneously rotating the prefabricated U-shaped beam through the rotatable lifting appliance and enabling one end of the prefabricated U-shaped beam to move towards the inner side of the gantry crane, and controlling the rotatable lifting appliance and the other end of the prefabricated U-shaped beam to fall onto the beam transporting gun carriage front vehicle;
e. operating the rotatable lifting appliance to be separated from the other end of the prefabricated U-shaped beam and lifting the rotatable lifting appliance;
f. and operating the gantry crane to drive away and transport the beam gun carrier to start and transport the beam.
Furthermore, the double-crane gantry crane comprises a gantry crane main beam, two gantry crane flexible support legs connected below two ends of the gantry crane main beam, and two trolleys located above the gantry crane main beam and capable of translating along the gantry crane main beam, wherein one trolley is connected with the rotatable lifting appliance located below and controls the rotatable lifting appliance to move horizontally, move vertically and rotate, and the other trolley is connected with the fixed end lifting appliance located below and controls the fixed end lifting appliance to move horizontally and move vertically.
Further, the crane track comprises a steel rail and a track foundation arranged below the steel rail, and the two gantry crane flexible supporting legs can translate along the steel rail.
Furthermore, a pedestrian ladder is arranged on the flexible supporting leg of the portal crane.
Furthermore, the beam transporting gun carriage front carriage and the beam transporting gun carriage rear carriage respectively comprise a carriage assembly, a bogie assembly, a braking device, a driving device and a supporting and fixing device, wherein the braking device and the driving device are arranged in the carriage assembly, and the bogie assembly and the supporting and fixing device are arranged on the carriage assembly.
Furthermore, the bogie assembly is connected with the vehicle body assembly through a pin shaft which is vertically arranged in the axial direction, a friction pair is formed between the bottom of the bogie assembly and the vehicle body assembly through a wear plate, and an inclined support or a fixing frame is arranged above the bogie assembly.
Further, the rotatable spreader is a 360 ° rotating spreader.
Furthermore, the beam transporting gun carrier is a tire type beam transporting gun carrier, a front carrier beam transporting bracket for bearing the prefabricated U-shaped beam is arranged on the front carrier of the beam transporting gun carrier, and a rear carrier beam transporting bracket for bearing the prefabricated U-shaped beam is arranged on the rear carrier of the beam transporting gun carrier.
According to a second aspect of the embodiments of the present invention, there is provided a single-gantry crane construction equipment for falling beams across an internal skew angle, the construction equipment comprises a double-hanger portal crane, a crane track, a rotatable hanger, a fixed end hanger and a beam transporting gun carriage, the double-hanger portal crane moves along the crane track, the beam transporting gun carriage comprises a beam transporting gun carriage front carriage and a beam transporting gun carriage rear carriage, the front car and the rear car of the beam transporting gun carriage are arranged at intervals, the total outline length during the loading operation of the beam transporting gun carriage is greater than the span of the double-lifting-tool portal crane, the rotatable lifting appliance and the fixed end lifting appliance are respectively suspended at two sides of the double-lifting appliance gantry crane in the horizontal direction, the rotatable lifting appliance can horizontally move, move up and down and rotate under the control of the double-lifting-appliance portal crane, the fixed end lifting appliance can move horizontally and vertically under the control of the double-lifting appliance portal crane.
Further, the double-crane portal crane comprises a portal crane main beam, two portal crane flexible legs connected below two ends of the portal crane main beam and two trolleys positioned above the portal crane main beam and capable of translating along the portal crane main beam, wherein one trolley is connected with the rotatable lifting appliance positioned below and controls the rotatable lifting appliance to horizontally move, vertically move and rotate, and the other trolley is connected with the fixed end lifting appliance positioned below and controls the fixed end lifting appliance to horizontally move and vertically move;
the crane track comprises a steel rail and a track foundation arranged below the steel rail, and the two portal crane flexible supporting legs can translate along the steel rail;
the flexible supporting legs of the portal crane are provided with pedestrian crawling ladders;
the front beam carrying gun carriage and the rear beam carrying gun carriage are respectively composed of a carriage assembly, a bogie assembly, a braking device, a driving device and a supporting and fixing device, wherein the braking device and the driving device are arranged in the carriage assembly, and the bogie assembly and the supporting and fixing device are arranged on the carriage assembly;
the bogie assembly is connected with the car body assembly through a pin shaft which is vertically arranged in the axial direction, a friction pair is formed between the bottom of the bogie assembly and the car body assembly through a wearing plate, and an inclined support or a fixing frame is arranged above the bogie assembly;
the rotatable lifting appliance is a 360-degree rotating lifting appliance;
the beam transporting gun carrier is a tire type beam transporting gun carrier, a front carrier beam transporting bracket for bearing the prefabricated U-shaped beam is arranged on the front carrier of the beam transporting gun carrier, and a rear carrier beam transporting bracket for bearing the prefabricated U-shaped beam is arranged on the rear carrier of the beam transporting gun carrier.
The embodiment of the invention has the following advantages:
the beam body in the conveying process is rotated by a rotatable lifting appliance ingeniously, so that the beam conveying gun carriage after beam falling is convenient to drive away from the beam falling area, the operation efficiency is improved, the used equipment is common machines for conveying and erecting beams, and the market renting is convenient; the construction method has strong universality, wide application range and simple process flow, and reduces the purchasing and using requirements on large equipment in the operation process of transporting and erecting the beam. The beam transporting gun carriage with the length exceeding the span of the portal crane has the condition of beam falling in the span, and the service efficiency of large equipment is improved. The method overcomes the defects in the traditional beam transporting and installing construction method, reduces the purchasing and using requirements on large equipment (mainly comprising a portal crane and a beam transporting gun truck) in the beam transporting and erecting construction operation process, and simultaneously ensures the safety and quality of beam transporting and installing construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1-2 are views showing a state of construction equipment in step a of the method provided in embodiment 1 of the present invention (fig. 1 is a front view, and fig. 2 is a right side view);
fig. 3 to 4 are state views of the construction equipment in step b of the method provided in embodiment 1 of the present invention (fig. 3 is a front view, and fig. 4 is a right side view);
FIGS. 5 to 6 are state views of construction equipment in step c of the method provided in embodiment 1 of the present invention (FIG. 5 is a front view, and FIG. 6 is a right side view);
fig. 7 to 8 are state views of the construction equipment in step d of the method provided in embodiment 1 of the present invention (fig. 7 is a front view, and fig. 8 is a left side view);
fig. 9 to 10 are state views of the construction equipment in step e of the method provided in embodiment 1 of the present invention (fig. 9 is a front view, and fig. 10 is a left side view);
fig. 11 to 13 are state views of the construction equipment in step f of the method provided in embodiment 1 of the present invention (fig. 11 is a front view, fig. 12 is a right side view, and fig. 13 is a plan view);
fig. 14 is a flowchart illustrating a method according to embodiment 3 of the present invention.
In the figure:
1-beam transporting gun truck front truck 2-beam transporting gun truck rear truck 3-rotatable sling 4-fixed end sling 5-prefabricated U-shaped beam 6-crane trolley 7-gantry crane main beam 8-front truck transport beam bracket 9-rear truck transport beam bracket 10-steel rail 11-track foundation 12-gantry crane flexible support leg 13-pedestrian ladder stand
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment of the invention provides a construction method for a single gantry crane to fall beams at an angle of crossing obliquely in a crossing direction, which is carried out by adopting construction equipment, as shown in figure 1-2, the construction equipment comprises a double-hanger gantry crane, a crane track, a rotatable hanger 3, a fixed end hanger 4 and a beam transporting gun carriage, the double-hanger gantry crane moves along the crane track, the beam transporting gun carriage comprises a beam transporting gun carriage front carriage 1 and a beam transporting gun carriage rear carriage 2, the beam transporting gun carriage front carriage 1 and the beam transporting gun carriage rear carriage 2 are arranged at intervals, the total outline length during loading operation of the beam transporting gun carriage is greater than the span diameter of the double-hanger gantry crane, the rotatable hanger 3 and the fixed end hanger 4 are respectively suspended at two sides of the double-hanger gantry crane in the horizontal direction, the rotatable hanger 3 can horizontally move under the control of the double-hanger gantry crane, and the beam transporting gun carriage can move horizontally, The fixed end lifting appliance 4 can horizontally move and vertically move under the control of a double-lifting appliance portal crane; the construction method comprises the following steps:
a. as shown in fig. 1-2, a beam transporting gun carriage front carriage 1 and a beam transporting gun carriage rear carriage 2 are conveyed between crane rails, the length direction of the beam transporting gun carriage front carriage 1 is adjusted to be obliquely crossed with the crane rails, and the beam transporting gun carriage rear carriage 2 is staggered with the beam transporting gun carriage front carriage 1 along the extension direction of the crane rails; the gantry crane, the rotatable lifting tool 3 and the fixed end lifting tool 4 are operated to lift the prefabricated U-shaped beam 5 from the beam-making pedestal;
b. as shown in fig. 3-4, the gantry crane is operated to move along the crane track and the fixed-end lifting appliance 4 is positioned above the girder transporting gun carriage rear vehicle 2, and the fixed-end lifting appliance 4 is controlled to drop one end of the prefabricated U-shaped beam 5 onto the girder transporting gun carriage rear vehicle 2;
c. as shown in fig. 5-6, operating the fixed-end hanger 4 to be disengaged from one end of the prefabricated U-beam 5 and lifting the fixed-end hanger 4;
d. as shown in fig. 7-8, the gantry crane is operated to move so that the rotatable sling 3 and the other end of the prefabricated U-shaped beam 5 are positioned above the girder transporting gun carriage front truck 1, and simultaneously, the rotatable sling 3 rotates the prefabricated U-shaped beam 5 and moves one end of the prefabricated U-shaped beam 5 to the inner side of the gantry crane, so that the rotatable sling 3 and the other end of the prefabricated U-shaped beam 5 are controlled to fall onto the girder transporting gun carriage front truck 1;
e. operating the rotatable spreader 3 to disengage from the other end of the prefabricated U-beam 5 and lifting the rotatable spreader 3, as shown in fig. 9-10;
f. as shown in fig. 11-13, the handling gantry crane drives off and the transfer beam gun carriage takes off the transfer beam.
The embodiment is suitable for the transportation equipment, and the total length is larger than the span of the gantry crane when the transportation equipment is loaded, and the transportation equipment cannot be loaded in the span of the gantry crane and under the main beam according to the conventional state. The embodiment of the invention ingeniously utilizes a rotatable lifting appliance to rotate the beam body in the conveying process, so that the beam conveying gun carriage after beam falling can conveniently drive away from the beam falling area, the operation efficiency is improved, the used equipment is common machines for conveying and erecting beams, and the market renting is convenient; the construction method has strong universality, wide application range and simple process flow, reduces the purchasing and using requirements of large equipment in the operation process of transporting and erecting the beam, and conforms to the principles of simple operation, practicality, economy and easy control of the safety and quality of the construction process.
Example 2
On the basis of embodiment 1, as shown in fig. 1-2, the double-crane gantry crane includes a gantry crane main beam 7, two gantry crane flexible legs 12 connected below two ends of the gantry crane main beam 7, and two trolleys 6 located above the gantry crane main beam 7 and capable of translating along the gantry crane main beam 7, wherein one trolley 6 is connected to the rotatable lifting appliance 3 located below and controls the rotatable lifting appliance 3 to move horizontally, move vertically and rotate, and the other trolley 6 is connected to the fixed end lifting appliance 4 located below and controls the fixed end lifting appliance 4 to move horizontally and move vertically. The crane track comprises a steel rail 10 and a track foundation 11 arranged below the steel rail 10, and the two portal crane flexible legs 12 can translate along the steel rail 10. And a pedestrian ladder 13 is arranged on the flexible supporting leg 12 of the portal crane. The rotatable lifting appliance 3 is a 360-degree rotating lifting appliance, the rotating speed is slow and controllable, and the end of the rotatable lifting appliance and a beam transporting bracket of a rear car of the beam transporting gun carriage synchronously rotate along with the forward movement of the portal crane until the beam body and the beam transporting gun carriage are in the same direction. The crane trolley can drive the rotatable lifting appliance and the fixed end lifting appliance to move, rotate and the like through the steel cable, the crane trolley has the capacity of lifting the precast beam by a single crane, and the crane trolley is well known by the technical personnel in the field and is not described in detail. The portal crane moves along the steel rail through the flexible supporting legs of the portal crane, and the flexible supporting legs of the portal crane can be V-shaped so as to improve the moving stability of the portal crane.
Example 3
On the basis of the embodiment 1, as shown in fig. 1-2, the girder transporting gun carrier front vehicle 1 and the girder transporting gun carrier rear vehicle 2 are respectively composed of a vehicle body assembly, a bogie assembly, a braking device, a driving device and a supporting and fixing device, wherein the braking device and the driving device are arranged in the vehicle body assembly, and the bogie assembly and the supporting and fixing device are arranged on the vehicle body assembly. The bogie assembly is connected with the vehicle body assembly through a pin shaft which is vertically arranged in the axial direction, a friction pair is formed between the bottom of the bogie assembly and the vehicle body assembly through a wear plate, an inclined support or a fixing frame is arranged above the bogie assembly, and when the beam transporting gun carriage turns, the bogie assembly and the vehicle body can rotate relatively. The beam transporting gun carrier is a tire type beam transporting gun carrier, a front carrier beam transporting bracket 8 for bearing the prefabricated U-shaped beam 5 is arranged on the front carrier 1 of the beam transporting gun carrier, and a rear carrier beam transporting bracket 9 for bearing the prefabricated U-shaped beam 5 is arranged on the rear carrier 2 of the beam transporting gun carrier. The beam transporting gun carriage with the structure can be matched with a portal crane to realize the rotation of the beam body and conveniently transport the beam body away.
Example 4
The following provides a specific flow of the method of the present invention, and the flow chart is shown in fig. 14.
First, procedure
1. And replacing one lifting appliance of the portal crane with a rotatable lifting appliance.
2. Beam transporting gun carriage attitude adjustment
1) The beam transporting gun carriage is close to the specified beam transporting installation area of the prefabricating yard, and the yard is leveled and compacted. The position of the portal crane is particularly required to ensure the smoothness of the access passage of the beam transporting gun carriage.
2) The angle and the position of the front vehicle and the rear vehicle of the beam transporting gun carriage are adjusted to ensure that the vehicle body is obliquely crossed with the track, and the vehicle body drives into the designated beam transporting installation area and is parked in the span of the portal crane.
3) The beam transporting bracket of the rear car of the beam transporting gun car is adjusted to be parallel to the track, and the beam transporting bracket of the front car is adjusted to be vertical to the car body.
3. Portal crane handle moves forward
1) And evacuating vehicles and irrelevant personnel in the girder lifting area, and completing track inspection and sundries cleaning in the operation area. After the preparation work is in place, each guardian pulls a warning line and evacuates the workers under the machine. Checking the condition of each part of the equipment, and starting the operation after the running condition is met.
2) Lifting beams from beam-making pedestal: the gantry crane walks in place, aligns the suspender, falls down the suspender, penetrates the suspender and installs the nut. The alignment of the suspender is correct, which is beneficial to penetration and can avoid the shaking of the beam body during demoulding. When the screw cap is installed, the gap between the screw cap and the beam body is uniform, the screw threads of the suspension rods are consistent, and 4 groups of suspension rods are adjusted to be uniformly stressed.
3) And (3) gradually lifting the hoisting point of the trolley by the micro-motion branch end until the beam body is separated from the die body by 3cm, checking whether braking is sensitive and reliable, simultaneously checking whether the beam body is connected with the die body or not, and starting lifting after complete demoulding. Gradually accelerating, and lifting the obstacle higher than the running direction area by more than 0.5 m.
4) Before the lifting beam is in place, the speed is reduced in advance, the low-speed alignment is carried out, the beam body is prevented from shaking greatly, and the beam can be commanded to fall after the stability and the accurate position of the beam body are confirmed. And (5) decelerating in advance before the beam is in place, and approaching and aligning at a low speed.
4. Fixed hoist end beam that falls of gantry crane
1) Before falling the roof beam, put hardwood or rubber back cushion in advance between the roof beam body and automobile body bracket, the position needs the accuracy, protects the roof beam piece and prevents to slide.
2) And lifting the precast beam to a designated beam conveying installation area, stopping, slowly descending the beam body to a beam conveying bracket of a rear vehicle of the beam conveying gun carriage, and accurately aligning each fulcrum. The beam body and the beam transporting gun carriage are connected and tightened by adopting a special steel structure fixing frame fixed on the carriage body to support or bind a steel wire rope and a chain block so as to ensure that the precast beam and the beam transporting carriage are balanced and stably reinforced.
3) And (3) disassembling the upright screw of the special appliance for the hanging beam, and slowly lifting the hanging beam appliance to separate the beam body from the gantry crane. And after the suspender nut is disassembled and no blocking is confirmed during hooking, the lifting appliance is lifted to the height of the safe cross beam.
5. Portal crane continues to move forward, rotatable formula hoist end falls roof beam
1) The gantry crane continues to move the lifting beam forwards, the beam transporting bracket and the rotatable lifting appliance of the rear beam transporting gun carriage synchronously rotate in the process, and the hoisting trolley synchronously draws close inwards until the beam body and the beam transporting gun carriage are in the same direction, and stops moving.
2) And slowly descending the beam body to a beam transporting bracket of a front vehicle of the beam transporting gun carriage, and accurately aligning all supporting points. The beam body and the beam transporting gun carriage are connected and tightened by adopting a special steel structure fixing frame fixed on the carriage body to support or bind a steel wire rope and a chain block so as to ensure that the precast beam and the beam transporting carriage are balanced and stably reinforced.
3) And (3) disassembling the upright screw of the special appliance for the hanging beam, and slowly lifting the hanging beam appliance to separate the beam body from the gantry crane. And after the suspender nut is disassembled and no blocking is confirmed during hooking, the lifting appliance is lifted to the height of the safe cross beam.
6. And after the beam loading is finished, the gantry crane drives away from the beam transporting installation area, and the beam transporting gun carriage starts to transport the beam.
Second, the requirements of the apparatus
Gantry crane: should be equipped with two hoists (trolley), and possess the ability of singly hoisting the precast beam.
Carrying out beam transporting gun carriage: divided into a front vehicle and a rear vehicle. Respectively consists of a vehicle body assembly, a bogie assembly, a braking device, a driving device and a supporting and fixing device (a fixed frame or an inclined strut).
Rotatable formula hoist: a lifting appliance of the gantry crane is replaced by a rotatable lifting appliance, the lifting appliance has a 360-degree rotation function after being modified, and the rotation rate is slow and controllable.
Attention points
1) Working space of gantry crane
In operation, certain space size should be left between the external dimension of gantry crane and precast beam and fortune roof beam gun carriage to do benefit to the loading and unloading operation. When loading and unloading a common type beam transporting gun carriage in a span, the distance between the common type beam transporting gun carriage and a door leg is more than 0.7m, and when the hanger does not work, the distance between the common type beam transporting gun carriage and the beam transporting gun carriage is more than 0.5 m.
2) The forward movement of the lifting beam should be slow and synchronous
After a beam transporting bracket of a rear beam transporting gun carriage vehicle and a precast beam are fixed, the gantry crane moves forwards slowly, the rotatable lifting appliance and the beam transporting bracket of the rear vehicle synchronously rotate slowly, the crane trolley synchronously draws close inwards, the running process is not blocked, and the precast beam is prevented from being damaged by internal force.
3) Inspection of large equipment operating forecourt
Before the precast beam is lifted, loaded and the like, used equipment must be checked firstly to determine whether the precast beam is in a good state or not, and the precast beam should be overhauled in time when not meeting the operation requirements. For example, after the portal crane finishes hoisting a hole beam piece, key parts such as a steel wire rope, a hanger rod of a hanger, a winch, a brake wheel brake and the like are carefully checked; before the tire type beam transporting vehicle is used, the tire air pressure, the engine water tank water level, the rotation flexibility of a steering gear, the sensitivity of a braking device, the integrity of a direction adjusting device and the like are carefully checked.
The construction technology for the single-door crane to fall the beam at the cross-inner oblique crossing angle has the advantages of strong universality, wide application range, simple process flow and the like.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The construction method is characterized in that construction equipment is adopted for the construction method, the construction equipment comprises a double-hanger portal crane, a crane track, a rotatable hanger (3), a fixed end hanger (4) and a beam transporting gun carriage, the double-hanger portal crane moves along the crane track, the beam transporting gun carriage comprises a beam transporting gun carriage front vehicle (1) and a beam transporting gun carriage rear vehicle (2), the beam transporting gun carriage front vehicle (1) and the beam transporting gun carriage rear vehicle (2) are arranged at intervals, the total outline length during loading operation of the beam transporting gun carriage is larger than the span of the double-hanger portal crane, the rotatable hanger (3) and the fixed end hanger (4) are respectively suspended on two sides of the double-hanger portal crane in the horizontal direction, and the rotatable hanger (3) can horizontally move under the control of the double-hanger portal crane, The fixed end lifting appliance (4) can horizontally move and vertically move under the control of a double-lifting appliance portal crane; the construction method comprises the following steps:
a. conveying a beam transporting gun carriage front vehicle (1) and a beam transporting gun carriage rear vehicle (2) between crane rails, adjusting the length direction of the beam transporting gun carriage front vehicle (1) to be obliquely crossed with the crane rails, and staggering the beam transporting gun carriage rear vehicle (2) and the beam transporting gun carriage front vehicle (1) along the extension direction of the crane rails; operating the gantry crane, the rotatable lifting tool (3) and the fixed end lifting tool (4) to lift the prefabricated U-shaped beam (5) from the beam-making pedestal;
b. operating the gantry crane to move along a crane rail, enabling the fixed end lifting appliance (4) to be located above the beam transporting gun carriage rear vehicle (2), and controlling the fixed end lifting appliance (4) to enable one end of the prefabricated U-shaped beam (5) to fall onto the beam transporting gun carriage rear vehicle (2);
c. operating the fixed end lifting appliance (4) to be separated from one end of the prefabricated U-shaped beam (5) and lifting the fixed end lifting appliance (4);
d. operating the portal crane to move so that the rotatable lifting appliance (3) and the other end of the prefabricated U-shaped beam (5) are positioned above the beam transporting gun carriage front truck (1), simultaneously rotating the prefabricated U-shaped beam (5) through the rotatable lifting appliance (3) and moving one end of the prefabricated U-shaped beam (5) to the inner side of the portal crane, and controlling the rotatable lifting appliance (3) and the other end of the prefabricated U-shaped beam (5) to fall onto the beam transporting gun carriage front truck (1);
e. operating the rotatable lifting appliance (3) to be separated from the other end of the prefabricated U-shaped beam (5) and lifting the rotatable lifting appliance (3);
f. and operating the gantry crane to drive away and transport the beam gun carrier to start and transport the beam.
2. The construction method according to claim 1, wherein the double-spreader gantry crane comprises a gantry crane main beam (7), two gantry crane flexible legs (12) connected below two ends of the gantry crane main beam (7), and two trolleys (6) located above the gantry crane main beam (7) and capable of translating along the gantry crane main beam (7), wherein one trolley (6) is connected with the rotatable spreader (3) located below and controls the rotatable spreader (3) to move horizontally, move up and down and rotate, and the other trolley (6) is connected with the fixed end spreader (4) located below and controls the fixed end spreader (4) to move horizontally and move up and down.
3. Construction method according to claim 2, wherein the crane track comprises a steel rail (10) and a track foundation (11) arranged below the steel rail (10), the two gantry crane flexible legs (12) being translatable along the steel rail (10).
4. Construction method according to claim 2, characterized in that a walking ladder (13) is arranged on the flexible legs (12) of the gantry crane.
5. Construction method according to claim 1, wherein the girder gun carrier front car (1) and the girder gun carrier rear car (2) are each composed of a car body assembly, a bogie assembly, a brake device, a drive device, and a supporting and fixing device, the brake device and the drive device being provided in the car body assembly, the bogie assembly and the supporting and fixing device being provided on the car body assembly.
6. The construction method according to claim 5, wherein the bogie assembly is connected with the vehicle body assembly through a pin shaft which is vertically arranged in the axial direction, a friction pair is formed between the bottom of the bogie assembly and the vehicle body assembly through a wear plate, and an inclined support or a fixing frame is arranged above the bogie assembly.
7. Construction method according to claim 1, characterized in that the rotatable spreader (3) is a 360 ° rotating spreader.
8. The construction method according to claim 1, wherein the girder transporting gun carrier is a tire type girder transporting gun carrier, a front carrier girder bracket (8) for bearing the prefabricated U-shaped girder (5) is arranged on the front carrier (1) of the girder transporting gun carrier, and a rear carrier girder bracket (9) for bearing the prefabricated U-shaped girder (5) is arranged on the rear carrier (2) of the girder transporting gun carrier.
9. The construction equipment is characterized by comprising a double-hanger portal crane, a crane track, a rotatable hanger (3), a fixed-end hanger (4) and a beam transporting gun carriage, wherein the double-hanger portal crane moves along the crane track, the beam transporting gun carriage comprises a beam transporting gun carriage front carriage (1) and a beam transporting gun carriage rear carriage (2), the beam transporting gun carriage front carriage (1) and the beam transporting gun carriage rear carriage (2) are arranged at intervals, the total outline length during loading operation of the beam transporting gun carriage is greater than the span diameter of the double-hanger portal crane, the rotatable hanger (3) and the fixed-end hanger (4) are respectively suspended on two sides of the double-hanger portal crane in the horizontal direction, and the rotatable hanger (3) can horizontally move, vertically move and rotate under the control of the double-hanger portal crane, the fixed end lifting appliance (4) can move horizontally and vertically under the control of the double-lifting-appliance portal crane.
10. The construction equipment according to claim 9, wherein the double-spreader gantry crane comprises a gantry crane main beam (7), two gantry crane flexible legs (12) connected below both ends of the gantry crane main beam (7), and two trolleys (6) located above the gantry crane main beam (7) and capable of translating along the gantry crane main beam (7), wherein one trolley (6) is connected with the rotatable spreader (3) located below and controls the rotatable spreader (3) to move horizontally, move up and down and rotate, and the other trolley (6) is connected with the fixed end spreader (4) located below and controls the fixed end spreader (4) to move horizontally and move up and down;
the crane track comprises a steel rail (10) and a track foundation (11) arranged below the steel rail (10), and the two portal crane flexible legs (12) can translate along the steel rail (10);
a pedestrian ladder (13) is arranged on the flexible supporting leg (12) of the portal crane;
the front beam carrying gun carriage (1) and the rear beam carrying gun carriage (2) respectively comprise a carriage assembly, a bogie assembly, a braking device, a driving device and a supporting and fixing device, wherein the braking device and the driving device are arranged in the carriage assembly, and the bogie assembly and the supporting and fixing device are arranged on the carriage assembly;
the bogie assembly is connected with the car body assembly through a pin shaft which is vertically arranged in the axial direction, a friction pair is formed between the bottom of the bogie assembly and the car body assembly through a wearing plate, and an inclined support or a fixing frame is arranged above the bogie assembly;
the rotatable lifting appliance (3) is a 360-degree rotating lifting appliance;
the beam transporting gun carrier is a tire type beam transporting gun carrier, a front carrier beam transporting bracket (8) used for bearing the prefabricated U-shaped beam (5) is arranged on a front carrier (1) of the beam transporting gun carrier, and a rear carrier beam transporting bracket (9) used for bearing the prefabricated U-shaped beam (5) is arranged on a rear carrier (2) of the beam transporting gun carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718682.2A CN110386557B (en) | 2019-08-05 | 2019-08-05 | Construction method and construction equipment for single-door crane to fall beam at cross-internal oblique crossing angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910718682.2A CN110386557B (en) | 2019-08-05 | 2019-08-05 | Construction method and construction equipment for single-door crane to fall beam at cross-internal oblique crossing angle |
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| Publication Number | Publication Date |
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| CN110386557A CN110386557A (en) | 2019-10-29 |
| CN110386557B true CN110386557B (en) | 2020-11-10 |
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| CN201910718682.2A Active CN110386557B (en) | 2019-08-05 | 2019-08-05 | Construction method and construction equipment for single-door crane to fall beam at cross-internal oblique crossing angle |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10330079A (en) * | 1997-05-29 | 1998-12-15 | Kajima Corp | Raising auxiliary device of member and method thereof |
| CN202148145U (en) * | 2011-05-26 | 2012-02-22 | 中铁七局集团第四工程有限公司 | Floor-rail-type gantry crane |
| CN102433844B (en) * | 2011-09-26 | 2014-08-06 | 中交四航局第一工程有限公司 | Method for erecting prefabricated beam of bridge deck |
| US10597265B2 (en) * | 2015-11-06 | 2020-03-24 | High Concrete Group, Llc | Slider for use with a crane |
| CN207551767U (en) * | 2017-12-14 | 2018-06-29 | 河南省交通规划设计研究院股份有限公司 | By the use of precast main beam as the bridge construction hanging device of primary structure member |
| CN208279196U (en) * | 2018-05-30 | 2018-12-25 | 浙江中建路桥设备有限公司 | A kind of Bridge Erector and beam car improving safety |
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Inventor after: Liu Diankai Inventor after: Bai Shuangyuan Inventor after: Liang Junfeng Inventor after: Liu Anze Inventor after: Zhang Hua Inventor after: Qi Xiaolong Inventor after: Yu Shengjin Inventor after: Hou Junjie Inventor after: Ma Zhanhong Inventor after: Dong Nannan Inventor after: Zhou Guoxin Inventor before: Liu Diankai Inventor before: Liang Junfeng Inventor before: Liu Anze Inventor before: Qi Xiaolong Inventor before: Zhang Hua Inventor before: Yu Shengjin Inventor before: Hou Junjie Inventor before: Ma Zhanhong Inventor before: Dong Nannan Inventor before: Bai Shuangyuan |
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