A prefabricated small box girder and cast-in-place box girder connection section artificial beam moving construction method

Abstract

The application relates to a prefabricated small box girder and cast-in-place box girder connection section artificial beam moving construction method, and belongs to the field of box girder transverse moving equipment. The method mainly comprises the following steps: S1, multiple cushion stones are laid on a base surface, and multiple sliding plates are laid on the cushion stones in the transverse moving direction of the prefabricated small box girder; S2, multiple rolling rods are arranged on the sliding plates in the length direction of the sliding plates, and a mop is arranged on the multiple rolling rods; S3, a hoisting device is used to place the prefabricated small box girder on the mop; S4, multiple main hoists anchored on the bridge in the transverse moving direction of the prefabricated small box girder are connected to the prefabricated small box girder, and the prefabricated small box girder is driven to move transversely through the main hoists; and S5, a lifting device is used for beam falling. The friction in the transverse moving process of the prefabricated small box girder is changed into rolling friction through the rolling rods, so that the transverse moving process of the whole prefabricated small box girder is convenient and fast, and the problem that it is time-consuming and labor-consuming to move the prefabricated small box girder from the narrow end to the wide section of the overline bridge is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of box girder transverse moving equipment, in particular to a manual moving beam construction method for a prefabricated small box girder and a cast-in-place box girder connection section. BACKGROUND

[0002] When a cross-line bridge is constructed, a cast-in-place box girder and a prefabricated small box girder are usually combined to construct the bridge, and the prefabricated small box girder is usually moved to the designed position by a bridge erecting machine, but when a connection section from a narrow section to a wide section is constructed, the width of the prefabricated small box girder is greater than that of the cast-in-place box girder, so that the width of the transverse moving track of the bridge erecting machine is insufficient when the wide prefabricated small box girder is constructed, and the bridge erecting machine is difficult to directly move the prefabricated small box girder to the wide section.

[0003] At present, the prefabricated small box girder is usually moved to the wide section by a rope sling erected on the wide section, but the erection process of the rope sling is usually time-consuming and laborious, and a large amount of manpower and material resources are consumed, thereby increasing the construction cost and construction time. SUMMARY

[0004] In order to improve the problem that it is time-consuming and laborious to move the prefabricated small box girder from the narrow end to the wide section of the cross-line bridge, the application provides a manual moving beam construction method for a prefabricated small box girder and a cast-in-place box girder connection section.

[0005] The manual moving beam construction method for the prefabricated small box girder and the cast-in-place box girder connection section provided by the application adopts the following technical scheme:

[0006] The manual moving beam construction method for the prefabricated small box girder and the cast-in-place box girder connection section mainly comprises the following steps:

[0007] S1: multiple cushion stones are laid on a base surface, and multiple sliding plates are laid on the cushion stones in the transverse moving direction of the prefabricated small box girder;

[0008] S2: multiple rolling rods are placed on the sliding plates in the length direction of the sliding plates, and a drag is placed on the multiple rolling rods;

[0009] S3: the prefabricated small box girder is placed on the drag by a hoisting device;

[0010] S4: multiple main hoists anchored on the bridge in the transverse moving direction of the prefabricated small box girder are connected to the prefabricated small box girder, and the prefabricated small box girder is driven to move by the main hoists;

[0011] S5: beam falling is performed by a hoisting device.

[0012] Through the above technical scheme, the construction personnel lays the cushion stone on the base surface, and then lays the plurality of sliding plates on the cushion stone, so that the plurality of sliding plates are distributed into two groups on the cushion stone, each group of sliding plates extends along the transverse direction of the prefabricated small box girder, then the plurality of rolling rods are placed on the sliding plates in the length direction of the sliding plates, the mop is placed on the rolling rods, then the prefabricated small box girder is hoisted on the mop, the plurality of main hoists are connected to the prefabricated small box girder, and the prefabricated small box girder is transversely moved by tightening the main hoists, at the same time, the construction personnel continuously places the rolling rods in the transverse direction of the prefabricated small box girder according to the transverse movement progress of the prefabricated small box girder, so that the prefabricated small box girder can continuously move transversely, after the prefabricated small box girder is transversely moved to the position, the prefabricated small box girder is lowered on the support by the hoisting equipment, and the transverse movement of the prefabricated small box girder is completed, the friction of the prefabricated small box girder in the transverse movement process is changed into rolling friction by the rolling rods, so that the transverse movement process of the entire prefabricated small box girder is convenient and fast, and the problem of time-consuming and labor-consuming in transversely moving the prefabricated small box girder from the narrower end to the wider section of the overline bridge is improved.

[0013] Optionally, the S2 further includes connecting the plurality of rolling rods through a limiting mechanism.

[0014] Through the above technical scheme, the construction personnel connects the plurality of rolling rods through the limiting mechanism, prevents the rolling rods from deviating on the sliding plate in the transverse movement process of the prefabricated small box girder, and improves the stability of the plurality of rolling rods in the transverse movement process of the prefabricated small box girder.

[0015] Optionally, the limiting mechanism includes a connecting plate and a blocking component, a plurality of grooves for allowing the rolling rods to be clamped in are arranged on the connecting plate in the length direction of the connecting plate, and the blocking component is arranged on the connecting plate and is used for blocking the rolling rods from moving out of the grooves.

[0016] Through the above technical scheme, the construction personnel places the plurality of rolling rods in the plurality of grooves on the connecting plate respectively, and then blocks the rolling rods from moving out of the grooves through the blocking component, so as to complete the connection of the plurality of rolling rods, the rolling rods are positioned through the grooves, which facilitates the construction personnel to install the plurality of rolling rods at equal intervals, and enables the plurality of rolling rods to maintain the interval, thereby improving the stability of the rolling rods in supporting the prefabricated small box girder.

[0017] Optionally, the blocking component includes a baffle and a telescopic rod, the baffle is hingedly arranged on the side wall of the groove, one end of the telescopic rod is hingedly arranged on the side wall of the groove, and the other end of the telescopic rod is hingedly arranged on the baffle, and the length of the telescopic rod is telescopic.

[0018] Through the above technical scheme, when the rolling rod enters the groove, the construction personnel drives the telescopic rod to shorten, the telescopic rod drives the baffle to rotate towards the side wall of the groove, and the rolling rod can smoothly enter the groove, then the construction personnel drives the telescopic rod to lengthen, the telescopic rod drives the baffle to rotate above the rolling rod, and the rolling rod is prevented from moving out of the groove, thereby improving the stability of the rolling rod in the groove.

[0019] Optionally, the telescopic rod comprises a large rod, a small rod, a limiting block and a spring, the large rod is hingedly arranged on the side wall of the groove, the large rod is hollow and is provided with an opening at one end, the opening diameter of the opening end of the large rod is smaller than the internal opening diameter of the large rod; the small rod is slidingly arranged in the large rod, the small rod is hingedly arranged on the baffle, the limiting block is arranged at one end of the small rod in the large rod, the diameter of the limiting block is larger than the diameter of the opening end of the large rod, when the limiting block abuts against the opening end of the large rod, the baffle is opposite to the center of the roller; the spring is arranged on the inner bottom wall of the large rod, and the spring is connected with the small rod.

[0020] By adopting the above technical scheme, when the construction personnel moves the roller into the groove, the roller extrudes the baffle, the baffle extrudes the small rod to make the small rod move towards the large rod, the small rod extrudes the spring to make the spring in a compressed state, and then the baffle rotates towards the side wall of the groove, after the roller slides into the groove, the small rod moves away from the large rod under the action of the spring, the small rod drives the baffle to reset to be opposite to the center of the roller, at this time, the limiting block on the small rod abuts against the opening end of the large rod, when the roller has a tendency to move out of the groove, the limiting block abuts against the opening end of the large rod, preventing the baffle from rotating upward, and the baffle can block the roller, the whole process only needs the construction personnel to press the roller into the groove, improving the convenience of the construction personnel to install the roller.

[0021] Optionally, the connecting plate is provided with a locking mechanism for connecting the connecting plate with the mop, the locking mechanism comprises a connecting rod, a connecting sleeve and a locking piece, the connecting rod is hingedly arranged on the connecting plate, the connecting sleeve is arranged on the mop and is used for allowing the connecting rod to be clamped in, and the locking piece is arranged on the connecting sleeve and is used for positioning the connecting rod in the connecting sleeve.

[0022] By adopting the above technical scheme, the construction personnel rotates the connecting rod to make the connecting rod rotate into the connecting sleeve, and then positions the connecting rod in the connecting sleeve through the locking piece, so as to realize the connection between the connecting plate and the mop, when the prefabricated small box girder drives the mop to move, the mop can drive the connecting plate to move, and the connecting plate in turn drives multiple rollers to move synchronously with the prefabricated small box girder, preventing the relative sliding between the roller and the mop during the transverse movement of the prefabricated small box girder, so that the roller gradually separates from the bottom of the mop, improving the stability of the roller on the bottom of the mop, and saving the work process of the construction personnel to continuously place the roller in the transverse movement direction of the prefabricated small box girder according to the transverse movement progress of the prefabricated small box girder.

[0023] Optionally, the locking piece comprises a bolt, the bolt is slidingly arranged on the connecting sleeve, and the connecting rod is provided with a locking hole for allowing the bolt to be inserted.

[0024] By adopting the technical scheme, the construction personnel slides the bolt towards the direction close to the connecting rod, so that the bolt is inserted into the locking hole, and positioning of the connecting rod in the connecting sleeve is completed.

[0025] Optionally, the S4 further includes: connecting the plurality of auxiliary hoists, which are anchored to the prefabricated small box girder in the transverse direction away from the prefabricated small box girder, to the prefabricated small box girder.

[0026] By adopting the technical scheme, when the prefabricated small box girder is transversely moved, the construction personnel tightens the main hoist to simultaneously loosen the auxiliary hoist, the auxiliary hoist supports the prefabricated small box girder, the overturning of the prefabricated small box girder in the transverse movement is prevented, and the stability of the prefabricated small box girder in the transverse movement is improved.

[0027] Optionally, the S1 further includes: connecting the abutting positions of the adjacent slide plates through a connecting mechanism.

[0028] By adopting the technical scheme, after the slide plates are laid, the construction personnel connects the abutting positions of the adjacent slide plates through the connecting mechanism, and the integrity of the plurality of slide plates is improved.

[0029] Optionally, the connecting mechanism includes a plurality of connecting barrels and a screw rod, the plurality of connecting barrels are arranged on the side walls of the slide plates, and the screw rod is threadedly arranged on the connecting barrels and is used for being threadedly arranged on the connecting barrels of the adjacent slide plates.

[0030] By adopting the technical scheme, the construction personnel rotates the screw rod, so that the screw rod is threadedly arranged on the connecting barrels of the adjacent slide plates, and the connection of the adjacent slide plates is completed, and the connection position of the adjacent slide plates is prevented from being warped after being pressed.

[0031] In summary, the present application has at least one of the following beneficial technical effects:

[0032] 1. The friction in the transverse movement of the prefabricated small box girder is changed into rolling friction by the roller, so that the transverse movement of the entire prefabricated small box girder is convenient and fast, and the problem that it is time-consuming and laborious to transversely move the prefabricated small box girder from the narrower end to the wider section of the overline bridge is improved.

[0033] 2. The plurality of rollers can be installed at equal intervals by the construction personnel, and the plurality of rollers can maintain the interval, so that the stability of the roller in supporting the prefabricated small box girder is improved.

[0034] 3. The connecting plate drives the plurality of rollers to move synchronously with the prefabricated small box girder, the relative sliding between the roller and the trailer in the transverse movement of the prefabricated small box girder is prevented, the roller gradually separates from the bottom of the trailer, the stability of the roller in the bottom of the trailer is improved, and the construction personnel is relieved of the work of continuously placing the roller in the transverse direction of the prefabricated small box girder according to the transverse movement progress of the prefabricated small box girder. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1It is a structural schematic diagram of a prefabricated small box girder and cast-in-place box girder connection section artificial beam shifting construction method of an embodiment of the present application.

[0036] Figure 2 It is a partial structure schematic diagram (the large rod is partially cut in the diagram).

[0037] Figure 3 It is Figure 2 A partial enlarged schematic diagram of part A.

[0038] Figure 4 It is Figure 2 A partial enlarged schematic diagram of part B.

[0039] The drawings show that: 1, a pad stone; 2, a sliding plate; 3, a roller; 4, a drag; 5, a main gourd; 6, a limiting mechanism; 61, a connecting plate; 611, a groove; 62, a blocking assembly; 621, a baffle; 622, an extension rod; 6221, a large rod; 6222, a small rod; 6223, a limiting block; 6224, a spring; 7, a locking mechanism; 71, a connecting rod; 711, a locking hole; 72, a connecting sleeve; 73, a locking piece; 731, a bolt; 8, a secondary gourd; 9, a connecting mechanism; 91, a connecting barrel; 92, a screw rod; 10, a supporting piece. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings Figures 1-4 The present application is further described in detail.

[0041] The embodiment of the present application discloses a prefabricated small box girder and cast-in-place box girder connection section artificial beam shifting construction method.

[0042] Referring to Figure 1 The prefabricated small box girder and cast-in-place box girder connection section artificial beam shifting construction method mainly comprises the following steps:

[0043] S1: multiple pad stones 1 are laid on the base surface, multiple sliding plates 2 are laid on the pad stones 1 along the transverse direction of the prefabricated small box girder, and the abutting parts of adjacent sliding plates 2 are connected through the connecting mechanism 9;

[0044] S2: multiple rollers 3 are placed on the sliding plates 2 along the length direction of the sliding plates 2, and the drag 4 is placed on the multiple rollers 3, and the multiple rollers 3 are connected through the limiting mechanism 6;

[0045] S3: the prefabricated small box girder is placed on the drag 4 through the hoisting equipment;

[0046] S4: multiple main gourds 5 anchored on the bridge in the transverse direction of the prefabricated small box girder are connected to the prefabricated small box girder, multiple secondary gourds 8 anchored away from the transverse direction of the prefabricated small box girder are connected to the prefabricated small box girder, and the prefabricated small box girder is driven to transversely move through the main gourd 5;

[0047] S5: Lower the beam using lifting equipment.

[0048] Reference Figure 1 , Figure 2 S1 includes: laying multiple pad stones 1 onto the bridge foundation surface. In this embodiment, the multiple pad stones 1 are divided into two groups. Each group of pad stones 1 is laid at equal intervals along the transverse direction of the precast small box girder, which is the width direction of the bridge. Then, support members 10 are filled between adjacent pad stones 1 to support the slide plate 2. The support members 10 can be channel steel, driftwood, wooden wedges, etc. In this embodiment, the support members 10 are channel steel, which is filled between adjacent pad stones 1 in the same group. The channel steel supports the slide plate 2 and improves the load-bearing capacity of the slide plate 2. Then, the slide plate 2 is laid on the pad stones 1 and the support members 10. In this embodiment, the slide plate 2 is a steel plate. The multiple slide plates 2 are also divided into two groups. Each group of slide plates 2 is laid end to end on the pad stones 1 along the laying direction of each group of pad stones 1. Then, the slide plate 2 is measured to see if it is level. If the levelness of the slide plate 2 is poor, the pad stones 1 are adjusted to make the slide plate 2 level.

[0049] The connecting mechanism 9 connects the mating points of adjacent slide plates 2. The connecting mechanism 9 includes a connecting cylinder 91 and a screw 92. Multiple connecting cylinders 91 are installed on the side wall of the slide plate 2. In this embodiment, the connecting cylinder 91 is a hollow steel cylinder with open ends. One connecting cylinder 91 is installed on the side wall of each end of the slide plate 2 along its length. The screw 92 is threaded through the connecting cylinder 91 and is used to thread through the connecting cylinder 91 of the adjacent slide plate 2. The construction personnel rotate the screw 92 to move the screw 92 closer to the adjacent slide plate 2 and thread the screw 92 through the sleeve on the adjacent slide plate 2, thus completing the connection of the mating points of the adjacent slide plates 2, improving the overall integrity of the multiple slide plates 2, and preventing the connection points of the adjacent slide plates 2 from warping under pressure.

[0050] Reference Figure 2 , Figure 3 S2 includes: placing multiple rollers 3 at intervals along the length of the slide plate 2 on the slide plate 2. In this embodiment, the rollers 3 are steel pipes filled with concrete, which have the characteristics of being easy to obtain materials and easy to manufacture. The two ends of the rollers 3 are respectively straddling two sets of slide plates 2.

[0051] Then the plurality of rolling rods 3 are connected through the limiting mechanism 6, the limiting mechanism 6 comprises a connecting plate 61 and a blocking assembly 62, a plurality of grooves 611 are equidistantly and spaced apart along the length direction of the connecting plate 61, the grooves 611 are used for the rolling rods 3 to be clamped into, the spacing between adjacent grooves 611 is the same as the set spacing between adjacent rolling rods 3, in the embodiment, a semicircular polytetrafluoroethylene sliding plate 2 is installed on the bottom wall of the groove 611, and butter is smeared on the polytetrafluoroethylene sliding plate 2, so as to reduce the friction between the rolling rod 3 and the bottom wall of the groove 611;

[0052] The blocking assembly 62 is installed on the connecting plate 61, and the blocking assembly 62 is used for blocking the rolling rod 3 from moving out of the groove 611, the blocking assembly 62 comprises a baffle 621 and a telescopic rod 622, the baffle 621 is hingedly installed on the side wall of the groove 611; one end of the telescopic rod 622 is hingedly installed on the side wall of the groove 611, and the other end is hingedly installed on the baffle 621, the length of the telescopic rod 622 is telescopic, the telescopic rod 622 comprises a large rod 6221, a small rod 6222, a limiting block 6223 and a spring 6224, the large rod 6221 is hingedly installed on the side wall of the groove 611, the large rod 6221 is hollow inside and opens at one end away from the side wall of the groove 611, the opening diameter of the opening end of the large rod 6221 is smaller than the internal opening diameter of the large rod 6221, the small rod 6222 is slidingly installed in the large rod 6221, one end of the small rod 6222 away from the large rod 6221 is hingedly installed on the baffle 621, the limiting block 6223 is installed at one end of the small rod 6222 sliding in the large rod 6221, the diameter of the limiting block 6223 is larger than the diameter of the opening end of the large rod 6221, when the limiting block 6223 abuts against the opening end of the large rod 6221, the baffle 621 is opposite to the center of the rolling rod 3, that is, the line between the rotating axis of the baffle 621 and the center of the rolling rod 3 coincides with the baffle 621 at this time; one end of the spring 6224 is installed on the inner wall of the large rod 6221, and the other end is installed on the limiting block 6223, the spring 6224 always has a tendency to drive the small rod 6222 to move away from the large rod 6221;

[0053] The construction personnel places the connecting plate 61 on the end of the plurality of rolling rods 3, and presses the plurality of rolling rods 3 into the plurality of grooves 611 on the connecting plate 61, in the pressing process, the rolling rod 3 extrudes the baffle 621, the baffle 621 rotates away from the rolling rod 3, the baffle 621 extrudes the small rod 6222, so that the small rod 6222 slides into the large rod 6221 in the direction close to the large rod 6221, and the small rod 6222 extrudes the spring 6224 to compress the spring 6224, so that the rolling rod 3 can be smoothly attached to the polytetrafluoroethylene sliding plate 2 in the groove 611, and then the spring 6224 drives the limiting block 6223 and the small rod 6222 to move away from the large rod 6221, when the limiting block 6223 abuts with the opening end of the large rod 6221, the baffle 621 rotates to be opposite to the center of the rolling rod 3, when the rolling rod 3 has a tendency to move out of the groove 611, the baffle 621 can abut on the rolling rod 3, the limiting block 6223 abuts with the opening end of the large rod 6221, and the small rod 6222 is limited to move away from the large rod 6221, so that the baffle 621 is limited to rotate upward, and the rolling rod 3 is limited to move out of the groove 611, thereby improving the stability of the rolling rod 3 in the groove 611, and the construction personnel only needs to press the rolling rod 3 into the groove 611 to complete the installation of the rolling rod 3, and the construction personnel can take out the rolling rod 3 from the groove 611 by pressing the baffle 621 downward, and the plurality of grooves 611 opened at equal intervals can position the installation of the rolling rod 3, so that the construction personnel can install the plurality of rolling rods 3 at equal intervals on the sliding plate 2, and the plurality of grooves 611 can keep the distance between the adjacent rolling rods 3, prevent the rolling rods 3 from deviating during rotation, and improve the stability of the rolling rods 3 supporting the transverse movement of the prefabricated small box girder;

[0054] Then the construction personnel places the mop 4 on the plurality of rolling rods 3, in this embodiment, the mop 4 includes 18# channel steel and 20# channel steel, the 20# channel steel abuts on the rolling rod 3, and the 18# channel steel is buckled in the 20# channel steel, thereby improving the bearing capacity of the mop 4 for the prefabricated small box girder, and the two ends of the 20# channel steel are inclined upward.

[0055] Referring to Figure 2 , Figure 4The connecting plate 61 is provided with a locking mechanism 7 for connecting the connecting plate 61 with the trolley 4. The locking mechanism 7 comprises a connecting rod 71, a connecting sleeve 72 and a locking piece 73. The connecting rod 71 is hingedly connected to the connecting plate 61. The connecting sleeve 72 is connected to the trolley 4 and is used for clamping the connecting rod 71. In the embodiment, the connecting sleeve 72 is a U-shaped sleeve, and the opening of the connecting sleeve 72 faces away from the trolley 4. The locking piece 73 is connected to the connecting sleeve 72 and is used for positioning the connecting rod 71 in the connecting sleeve 72. The locking piece 73 comprises a latch 731 which is slidably arranged on the side wall of the connecting sleeve 72. The connecting rod 71 is provided with a locking hole 711 which is used for inserting the latch 731. When the connecting rod 71 is rotated into the connecting sleeve 72, the locking hole 711 is aligned with the latch 731.

[0056] The construction personnel rotates the connecting rod 71 so that the connecting rod 71 is rotated into the connecting sleeve 72. Then the latch 731 is pushed towards the connecting rod 71 so that the latch 731 passes through the locking hole 711 and penetrates into the other side wall of the connecting sleeve 72. Thus, the connecting rod 71 is positioned in the connecting sleeve 72, and the connecting plate 61 is connected with the trolley 4. When the prefabricated small box girder and the trolley 4 are transversely moved, the trolley 4 can drive the connecting plate 61 to move synchronously. The connecting plate 61 further drives the plurality of rollers 3 to move synchronously with the prefabricated small box girder, thereby improving the stability of the rollers 3 at the bottom of the trolley 4. The relative sliding between the trolley 4 and the rollers 3 during the transverse movement of the prefabricated small box girder is prevented, and the rollers 3 gradually move away from the bottom of the trolley 4. Thus, the work process of arranging the construction personnel to continuously place the rollers 3 in the transverse direction of the prefabricated small box girder according to the transverse movement progress of the prefabricated small box girder is omitted, the labor is saved, and the transverse movement process of the prefabricated small box girder can be continuously performed.

[0057] With reference to Figure 1 S3 comprises hoisting the prefabricated small box girder onto the trolley 4 by hoisting equipment. The hoisting equipment can be a bridge girder erection machine, a crane or the like. In the embodiment, the hoisting equipment is a bridge girder erection machine.

[0058] With reference to Figure 1 S4 comprises connecting a plurality of main hoists 5 anchored on the bridge in the transverse direction of the prefabricated small box girder to the prefabricated small box girder. In the embodiment, the main hoists 5 are two 10-ton hand-operated hoists. The force control ends of the main hoists 5 are pre-anchored on the built-in reinforced concrete cover beam stopper, and the main hoists 5 are connected to the main threaded steel bars on the side edges of the prefabricated small box girder through double-rope steel wires and locks. S4 further comprises connecting a plurality of auxiliary hoists 8 anchored away from the transverse direction of the prefabricated small box girder to the prefabricated small box girder. In the embodiment, the auxiliary hoists 8 are two 5-ton hand-operated hoists. The force control ends of the auxiliary hoists 8 are anchored on the reserved wet joint steel bars at the top ends of the built-in prestressed reinforced concrete side beams, and the auxiliary hoists 8 are connected to the expansion joint embedded exposed steel bars of the prefabricated small box girder through double-rope steel wires and locks.

[0059] The construction personnel control the two main hoists 5 to be synchronous tightening, the main hoists 5 can pull the prefabricated small box girder to move horizontally, and the construction personnel of the two auxiliary hoists 8 are synchronous loosening, so that the auxiliary hoists 8 always support the side of the prefabricated small box girder away from the horizontal moving direction of the prefabricated small box girder, prevent the prefabricated small box girder from overturning in the horizontal moving process, and improve the stability of the prefabricated small box girder in the horizontal moving process.

[0060] Referring to Figure 1 , S5 includes: falling beam by hoisting equipment, in this embodiment, the hoisting equipment includes two 100-ton jacks and two 70-ton jacks, after the prefabricated small box girder is moved horizontally to the position, the prefabricated small box girder is lifted by the two 100-ton jacks, the two 70-ton jacks are placed on the beam bottom as emergency backup, then the tow 4, the roller 3, the slide plate 2, the cushion stone 1 and the like are removed, then the oil return valve of the jack is slowly opened, so that the prefabricated small box girder falls to the support at a constant speed, and the prefabricated small box girder is supported by supporting the sunk wood, the shape rod and the like, and the stability of the prefabricated small box girder is improved.

[0061] The implementation principle of the embodiment of the application is as follows: the cushion stones 1 are laid on the base surface, the space between the cushion stones 1 is filled with channel steel, the sliding plate 2 is laid on the cushion stones 1, the sliding plate 2 is adjusted to be horizontal, the plurality of rolling rods 3 are placed on the sliding plate 2, the connecting plate 61 is placed at the end of the plurality of rolling rods 3, the plurality of rolling rods 3 are pressed into the plurality of grooves 611 on the connecting plate 61, the baffle 621 is rotated downward in the process of pressing, so that the rolling rod 3 can smoothly enter the groove 611, and then the plurality of rolling rods 3 are distributed at equal intervals on the sliding plate 2, after the rolling rod 3 enters the groove 611, the spring 6224 drives the limiting block 6223 and the small rod 6222 to move away from the large rod 6221, so that the baffle 621 is rotated to be opposite to the center of the rolling rod 3, the baffle 621 can block the rolling rod 3, and prevent the rolling rod 3 from moving out of the groove 611, then the construction personnel place the mop 4 on the plurality of rolling rods 3, rotate the connecting rod 71 on the connecting plate 61, so that the connecting rod 71 is rotated into the connecting sleeve 72 on the mop 4, then the latch 731 on the connecting sleeve 72 is inserted into the locking hole 711 on the connecting rod 71, then the prefabricated small box girder is hoisted on the mop 4, and the prefabricated small box girder is tightly wedged on the mop 4 by using the wooden wedge, then the main hoist 5 and the auxiliary hoist 8 are connected to the prefabricated small box girder, the main hoist 5 is tightened, and the auxiliary hoist 8 is loosened at the same time, so that the prefabricated small box girder moves horizontally at a constant speed, in the process of horizontal movement of the prefabricated small box girder, the mop 4 drives the connecting plate 61 to move synchronously, the connecting plate 61 drives the plurality of rolling rods 3 to move synchronously, so that the plurality of rolling rods 3 always rotate at the bottom of the mop 4, after the prefabricated small box girder continuously moves to the set position, the prefabricated small box girder is lifted by using the jack, then the mop 4, the rolling rod 3, the sliding plate 2, the cushion stone 1 and the like are removed, then the prefabricated small box girder is lowered to the support, the prefabricated small box girder is reinforced, the horizontal movement of the prefabricated small box girder is completed, the rolling rod 3, the sliding plate 2 and the mop 4 used in the whole process of horizontal movement of the prefabricated small box girder are convenient to manufacture, the rolling rod 3 changes the friction of the prefabricated small box girder into rolling friction, and the rolling rod 3 always rotates at the bottom of the mop 4, so that the prefabricated small box girder can continuously move horizontally, the process of moving the prefabricated small box girder is convenient and fast, and the problem that it is time-consuming and labor-consuming to move the prefabricated small box girder from the narrower end to the wider section of the overline bridge is effectively improved.

[0062] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made on the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A method for manually moving a precast small box girder to a cast-in-place box girder connection section, characterized in that: The main steps include: S1: Lay multiple pad stones (1) on the base surface, and lay multiple sliding plates (2) on the pad stones (1) along the transverse direction of the precast small box girder; S2: Place multiple rollers (3) at intervals along the length of the slide (2) on the slide (2), and place the tow (4) on the multiple rollers (3); The S2 further includes: connecting multiple rollers (3) through a limiting mechanism (6); The limiting mechanism (6) includes a connecting plate (61) and a blocking component (62). The connecting plate (61) has a plurality of grooves (611) spaced apart along the length direction of the connecting plate (61) for the roller (3) to be inserted. The blocking component (62) is disposed on the connecting plate (61) and is used to prevent the roller (3) from moving out of the groove (611). The blocking assembly (62) includes a baffle (621) and a telescopic rod (622). The baffle (621) is hinged to the side wall of the groove (611). One end of the telescopic rod (622) is hinged to the side wall of the groove (611), and the other end is hinged to the baffle (621). The length of the telescopic rod (622) is extendable. The telescopic rod (622) includes a large rod (6221), a small rod (6222), a limiting block (6223), and a spring (6224). The large rod (6221) is hinged to the side wall of the groove (611). The large rod (6221) is hollow inside and open at one end. The opening diameter of the open end of the large rod (6221) is smaller than the internal opening diameter of the large rod (6221). The small rod (6222) is slidably disposed inside the large rod (6221). The small rod (6222) is hinged to the stop. On the plate (621), the limiting block (6223) is set at one end of the small rod (6222) located inside the large rod (6221). The diameter of the limiting block (6223) is larger than the diameter of the open end of the large rod (6221). When the limiting block (6223) abuts against the open end of the large rod (6221), the baffle (621) is directly opposite the center of the roller (3). The spring (6224) is set on the inner bottom wall of the large rod (6221) and is connected to the small rod (6222). S3: Hoist the precast small box girder onto the trailer (4); S4: Connect multiple main hoists (5) anchored on the bridge in the lateral direction of the precast small box girder to the precast small box girder, and drive the precast small box girder to move laterally through the main hoists (5); S5: Lower the beam using lifting equipment.

2. The method for manually moving a precast small box girder to a cast-in-place box girder connection section according to claim 1, characterized in that: The connecting plate (61) is provided with a locking mechanism (7) for connecting the connecting plate (61) and the tow (4). The locking mechanism (7) includes a connecting rod (71), a connecting sleeve (72) and a locking member (73). The connecting rod (71) is hinged on the connecting plate (61). The connecting sleeve (72) is provided on the tow (4) and is used for the connecting rod (71) to be inserted. The locking member (73) is provided on the connecting sleeve (72) and is used to position the connecting rod (71) inside the connecting sleeve (72).

3. The method for manually moving a precast small box girder to a cast-in-place box girder connection section according to claim 2, characterized in that: The locking element (73) includes a pin (731), which is slidably disposed on the connecting sleeve (72), and the connecting rod (71) has a locking hole (711) for inserting the pin (731).

4. The method for manually moving a precast small box girder to a cast-in-place box girder connection section according to claim 1, characterized in that: The S4 further includes connecting multiple auxiliary hoists (8) anchored in the lateral direction away from the precast small box girder to the precast small box girder.

5. The method for manually moving a precast small box girder to a cast-in-place box girder connection section according to claim 1, characterized in that: The S1 further includes connecting the docking points of adjacent slide plates (2) through a connecting mechanism (9).

6. The method for manually moving a precast small box girder to a cast-in-place box girder connection section according to claim 5, characterized in that: The connecting mechanism (9) includes a connecting cylinder (91) and a screw (92). Multiple connecting cylinders (91) are provided on the side wall of the slide plate (2). The screw (92) is threaded through the connecting cylinder (91) and is used to thread through the connecting cylinder (91) of the adjacent slide plate (2).

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