CN107881920A - A kind of cantilever box beam automatic spray curing means - Google Patents

Abstract

The present invention is a kind of cantilever box beam automatic spray curing means, including atomizer, water pipe, maintenance support, adjusting means, traveling case, running motor, switch board, maintenance water tank, water pump, travel switch, cantilever box beam, sliding platform；Wherein maintenance branch is set up in the bottom of cantilever box beam, and top sets water pipe, and some atomizers are distributed with water pipe and connect the water pump of maintenance water tank bottom；Conserve support and sliding platform is connected by adjusting means, mesa base both sides connect traveling case respectively；Running motor is provided with above traveling case, end is provided with travel switch；Switch board passes through cable connection running motor and water pump.Advantage：1）Maintenance personnel input is reduced, reduces the risk that carries on construction work at night；2）Effectively improve the construction quality of cantilever box beam concrete；3）Assembling and disassembling is convenient, securely and reliably, good in economic efficiency.

Description

An automatic spray maintenance device for a suspended cast box girder

technical field

The invention relates to an automatic spray maintenance device for a cantilevered box girder, which belongs to the technical field of bridge construction.

Background technique

In the existing cantilevered box girder construction, the top surface of the box girder and the inner side of the box girder are covered with geotextiles and sprinkled for maintenance, and the outer side and bottom of the box girder flange are generally maintained with artificial watering. If the maintenance is not timely, it will easily cause dry and wet cycles, which is not conducive to The hydration reaction of concrete affects the strength of concrete and cannot meet the needs of on-site construction. Therefore, a new external and bottom maintenance method of cantilevered box girder is needed to meet the high quality of box girder construction.

Contents of the invention

The present invention proposes a cantilevered box girder maintenance device, which installs the automatic spraying maintenance bracket under the cantilevered box girder section, adopts a clock-type uninterrupted relay control, and pumps tap water to each atomizing nozzle through a water pump. Continuous spray maintenance on the outside and bottom of the box girder. Adjust the maintenance time interval and spraying time according to the actual needs on site to avoid the concrete dry-wet cycle during the beam maintenance process, so that the box girder is always kept in a wet state. The flow rate of the atomizing nozzle is adjustable, the device is simple, easy to install, and the atomization effect is good. There is no dead angle for spraying, which solves the problems in the maintenance process of cantilevered concrete box girders, such as untimely maintenance, dry-wet cycle, labor occupation, high risk, and insufficient maintenance. Let the construction safety, quality and environmental protection of the cantilevered box girder be effectively controlled.

The technical solution of the present invention: an automatic spray maintenance device for cantilevered box girders, including atomizing nozzles, water pipes, maintenance brackets, adjustment devices, travel boxes, travel motors, control cabinets, maintenance water tanks, water pumps, travel switches, suspension The pouring box girder and the sliding platform; the maintenance support is set at the bottom of the cantilevered box girder, and the water pipe is arranged above it, and a number of atomizing nozzles are distributed on the water pipe and connected to the water pump at the bottom of the maintenance water tank; the maintenance support is connected to the sliding platform through an adjustment device, The two sides of the bottom of the platform are respectively connected to the travel box; the travel motor is installed above the travel box, and the travel switch is provided at the end; the control cabinet is connected to the travel motor and the water pump through cables.

Its working method, working method, comprises following process steps:

1) After the construction of the cantilevered box girder 11 section is completed, a sliding platform 12 is set at the bottom of the cantilevered box girder 11, and a maintenance support 3 is installed on the sliding platform 12;

2) Install the maintenance water pipe 2 on the maintenance bracket 3, and evenly arrange several atomizing nozzles 1 on the water pipe 2;

3) Install the maintenance water tank 8 and the control cabinet 7, and the control cabinet 7 is connected to the water pump 9 inside the maintenance water tank 8 through cables;

4) Control the distance between the maintenance support 3 and the cantilevered box girder 11 through the adjustment device 4;

5) The control cabinet 7 controls the water pump 9 and the running motor 6, and the running motor 6 controls the running box 5 to drive the maintenance bracket 3 to move back and forth on the sliding platform 12 without interruption. At the same time, the water pump 9 controls the water intake of the water pipe 2 to spray the box beam Spray curing until the curing time required by the design and specification is reached;

6) The travel distance of the traveling motor 6 is controlled by the travel switch 10 at the end of the traveling case 5 to prevent the maintenance bracket 3 from moving beyond the total length of the traveling case 5 .

Advantages of the present invention:

1) Reduce the investment of maintenance personnel, automatic spray maintenance around the clock, avoid maintenance personnel working at night, and reduce risks;

2) Keep the concrete in a wet state all the time, effectively improving the construction quality of cantilevered box girder concrete;

3) Simple structure, convenient installation and disassembly during construction, safe and reliable, good economic benefits, and great promotion value.

Description of drawings

Accompanying drawing 1 is the general diagram of automatic spray maintenance support.

Accompanying drawing 2 is the sectional view of automatic spray maintenance support.

In the figure, 1 is the atomizing nozzle, 2 is the water pipe, 3 is the maintenance bracket, 4 is the adjustment device, 5 is the travel box, 6 is the travel motor, 7 is the control cabinet, 8 is the maintenance water tank, 9 is the water pump, and 10 is the stroke Switch, 11 is a cantilevered box girder, and 12 is a sliding platform.

Detailed ways

Referring to accompanying drawings 1-2, a cantilevered box girder maintenance device includes an atomizing nozzle 1, a water pipe 2, a maintenance support 3, an adjustment device 4, a running box 5, a running motor 6, a control cabinet 7, a maintenance water tank 8, and a water pump 9. Travel switch 10, cantilevered box girder 11, sliding platform 12; among them, the maintenance support 3 is set at the bottom of the cantilevered box girder 11, and the water pipe 2 is laid above the maintenance support 3, and several atomizing nozzles are evenly distributed on the water pipe 2 1. The water pipe 2 is connected to the water pump 9 at the bottom of the maintenance water tank 8; the bottom of the maintenance bracket 3 is connected to the sliding platform 12 through six adjustment devices 4, and the two sides of the bottom of the sliding platform 12 are respectively connected to a running box 5; A running motor 6 is arranged on the top, and a travel switch 10 is arranged at the end; the control cabinet 7 is connected with the running motor 6 and the water pump 9 through a cable.

The installation and working method of the cantilevered box girder maintenance device includes the following process steps:

1) After the construction of the cantilevered box girder 11 section is completed, a sliding platform 12 is set at the bottom of the cantilevered box girder 11, and a maintenance support 3 is installed on the sliding platform 12;

2) Install the maintenance water pipe 2 on the maintenance bracket 3, and evenly arrange several atomizing nozzles 1 on the water pipe 2;

3) Install the maintenance water tank 8 and the control cabinet 7, and the control cabinet 7 is connected to the water pump 9 inside the maintenance water tank 8 through cables;

4) Control the distance between the maintenance support 3 and the cantilevered box girder 11 through the adjustment device 4;

5) The control cabinet 7 controls the water pump 9 and the running motor 6, and the running motor 6 controls the running box 5 to drive the maintenance bracket 3 to move back and forth on the sliding platform 12 without interruption. At the same time, the water pump 9 controls the water intake of the water pipe 2 to spray the box beam Spray curing until the curing time required by the design and specification is reached;

6) The travel distance of the traveling motor 6 is controlled by the travel switch 10 at the end of the traveling case 5 to prevent the maintenance bracket 3 from moving beyond the total length of the traveling case 5 .

The sliding platform 12 is parallel to the bottom plane of the cantilevered box girder 11 .

The water pipe 2 is bent along the bottom plane of the cantilevered box girder 11 , and the spraying direction of the atomizing nozzle 1 on the water pipe 2 is perpendicular to the bottom plane of the cantilevered box girder 11 .

The atomizing nozzle 1, travel box 5, travel motor 6, control cabinet 7, and water pump 9 are finished products, and the specific specifications, model parameters and quantities are as follows:

name Specifications unit quantity Atomizing nozzle 4 points DN15 indivual 16 walking wheel Ø300 200*1500mm set 2 Out of shape motor Y2-90S-2 indivual 2 Out-of-shape limit switch LX10-12 indivual 2 water pump 90YQJD2-60/12-1.1 tower 1 Control cabinet Two-way frequency conversion control set 1

The control cabinet 7 is controlled by a stroke limit switch uninterrupted relay.

Example

12 hours after the cantilevered beam has been poured with concrete, start to spray and maintain the bottom of the beam and the web, and install the running track of the spray system on the bottom membrane sliding platform; adjust the height of the spray curing frame according to the height of the bottom of the beam, and set the The sprinkler system travels the limit baffle distance, starts the water pump and the shape motor button, and the sprinkler system will perform continuous reciprocating spray maintenance according to the limit baffles of the equipment at both ends of the track; it greatly saves manual frequent operations and makes the beam The bottom and web concrete are fully maintained to ensure the concrete maintenance cycle.

Claims (5)

1. An automatic spraying maintenance device for cantilevered box girders, characterized by comprising atomizing nozzles (1), water pipes (2), maintenance brackets (3), adjustment devices (4), traveling boxes (5), and traveling motors (6), control cabinet (7), maintenance water tank (8), water pump (9), travel switch (10), cantilevered box girder (11), sliding platform (12); among them, the maintenance bracket (3) is located on At the bottom of the cantilevered box girder (11), there is a water pipe (2) above the maintenance bracket (3), and several atomizing nozzles (1) are evenly arranged on the water pipe (2), and the water pipe (2) is connected to the maintenance water tank (8) The water pump (9) at the bottom; the bottom of the maintenance support (3) is connected to the sliding platform (12) through (6) adjustment devices (4), and the bottom sides of the sliding platform (12) are respectively connected to (1) traveling boxes (5); a travel motor (6) is provided above the travel box (5), and a travel switch (10) is provided at the end of the travel box (5); the control cabinet (7) is connected to the travel motor (6) and the water pump ( 9). 2. An automatic spray maintenance device for a cantilevered box girder according to claim 1, characterized in that the sliding platform (12) is parallel to the bottom plane of the cantilevered box girder (11). 3. An automatic spray maintenance device for a cantilevered box girder according to claim 1, characterized in that the water pipe (2) is bent along the bottom plane of the cantilevered box girder (11), and the water pipe (2) The spraying direction of the atomizing nozzle (1) on the top is perpendicular to the bottom plane of the cantilevered box girder (11). 4. An automatic spray maintenance device for a cantilevered box girder according to claim 1, characterized in that the control cabinet (7) is controlled by a travel limit switch with an uninterrupted relay. 5. The installation method of the cantilevered box girder maintenance device as claimed in claim 1, characterized in that it comprises the following process steps: 1) After the section construction of the cantilevered box girder (11) is completed, a sliding platform (12) is set at the bottom of the cantilevered box girder (11), and a maintenance bracket (3) is installed on the sliding platform (12); 2) Install the maintenance water pipe (2) on the maintenance bracket (3), and evenly arrange several atomizing nozzles (1) on the water pipe (2); 3) Install the maintenance water tank (8) and the control cabinet (7), and the control cabinet (7) is connected to the water pump (9) inside the maintenance water tank (8) through cables; 4) Control the distance between the maintenance support (3) and the cantilevered box girder (11) through the adjustment device (4); 5) The control cabinet (7) controls the water pump (9) and the running motor (6), and the running motor (6) controls the running box (5) to drive the maintenance bracket (3) to move back and forth on the sliding platform (12) without interruption, and at the same time The water pump (9) controls the water intake of the water pipe (2), and sprays and maintains the box girder until the maintenance time required by the design and specification is reached; 6) Control the travel distance of the traveling motor (6) through the travel switch (10) at the end of the traveling case (5) to prevent the maintenance bracket (3) from moving beyond the total length of the traveling case (5).