Full-automatic spraying maintenance device for prefabricated box girder

Abstract

The utility model belongs to the technical field of prefabricated box girders, and particularly relates to a prefabricated box girder full-automatic spraying maintenance device which comprises a supporting part arranged on the outer side of a prefabricated box girder. The walking part is connected with the supporting part and drives the supporting part to walk in the length direction of the prefabricated box girder; the first spraying heads are fixed on two sides of the supporting part, and the spraying directions of the first spraying heads face the side surface of the prefabricated box girder; and the second spraying heads are fixed to the tops of the supporting parts, and the spraying directions of the second spraying heads face the top of the prefabricated box girder. The walking part drives the supporting part to walk in the length direction of the prefabricated box girder, automatic reciprocating movement of the supporting part along the prefabricated box girder is achieved by means of the arranged travel switch and the car stopping plate, in the process, the spraying heads conduct all-around spraying maintenance on the top and the two sides of the prefabricated box girder, shrinkage cracks can be avoided, and the service life of the prefabricated box girder is prolonged. And the durability and the attractiveness of the prefabricated box girder are further ensured. Meanwhile, the whole device is simple in structure and easy to implement.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated box girders, and particularly relates to a full-automatic spraying and curing device for prefabricated box girders. Background Art

[0002] A box girder is a type of beam used in bridge construction. It is hollow inside and has flanges on both sides. Reinforced concrete box girders are categorized as precast or cast-in-place. Precast box girders are widely used in existing bridge construction. Precast box girders are large precast concrete components. After the formwork is completed, they require regular spray curing to prevent shrinkage cracks and ensure their durability and aesthetics.

[0003] Prior art discloses curing devices for prefabricated box girders. For example, CN116476209A discloses a prefabricated box girder spray curing device and its method. The prefabricated box girder curing device comprises a support portion, a running portion, a first spray curing portion, a second spray curing portion, a water storage portion, and a curing water collection portion. The second spray curing portion comprises a first spray element and a second spray element, and the angle formed between the first and second spray elements is adjustable. The prefabricated box girder curing device disclosed in this patent utilizes a first chute on the spray mounting member of the second spray curing portion, enabling the sliding element to reciprocate along the extension direction of the first chute. A transmission assembly converts the reciprocating sliding of the sliding element into reciprocating oscillation of the first and second spray elements, thereby achieving sufficient spray curing of the prefabricated box girder flanks. This solves the problems of prefabricated box girder spray curing devices, such as cracks in the flanks caused by spraying at the four corners, and the excessive water consumption and severe waste of water resources.

[0004] It is undeniable that the prefabricated box girder maintenance device and its spray maintenance method disclosed in this patent can indeed achieve the above-mentioned effects, but it still has certain shortcomings. When realizing the spray maintenance of the side of the prefabricated box girder, it has many parts and a complex structure, which is not convenient for installation and daily maintenance.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to provide a fully automatic spray curing device for prefabricated box girders, so as to solve the problems existing in the curing device for prefabricated box girders in the background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A fully automatic spray curing device for prefabricated box beams, comprising:

[0009] A support portion provided on the outer side of the prefabricated box beam;

[0010] A walking portion connected to the supporting portion and driving the supporting portion to move along the length direction of the prefabricated box girder;

[0011] A plurality of first spray heads fixed on both sides of the support portion and spraying toward the side surfaces of the prefabricated box beam;

[0012] a plurality of second spray heads fixed to the top of the support portion and spraying toward the top of the prefabricated box girder;

[0013] Among them, water tanks are symmetrically fixed on both sides of the support part, and booster pumps are respectively provided in the water tanks. The water outlet of the booster pump in one water tank is connected to the first spray head through a pipe, and the water outlet of the booster pump in the other water tank is connected to the second spray head through a pipe.

[0014] Preferably, the support portion includes pedestals symmetrically arranged on both sides of the prefabricated box beam and a support frame with its bottom ends fixed to the pedestals on both sides; the water tank is fixed on the pedestals.

[0015] Preferably, the walking part includes guide rails symmetrically laid on both sides of the prefabricated box beam, a drive motor fixed to one side of the pedestal, and a driven wheel and a driving wheel symmetrically arranged at both ends of the pedestal and rotatably connected to the pedestal; wherein, the driving wheel is fixedly connected to the output shaft of the drive motor; and the driven wheel and the driving wheel are both guided by the guide rails.

[0016] Preferably, baffles are fixed at both ends of the guide rail; travel switches corresponding to the baffles and connected to the drive motor are fixed at both ends of the base; when the travel switch touches the baffle, the travel switch is triggered and the drive motor reverses.

[0017] Preferably, infrared anti-collision devices connected to the driving motor are fixed on both ends of the pedestal.

[0018] Preferably, a water supply pipe connected to an external water source is fixed on the outer side of the support portion, and the water supply pipe is vertically upward and the top water outlet portion is bent downward to form a U shape.

[0019] Preferably, a water supply switch corresponding to the base is fixed on the water supply pipe, and a liquid level gauge is fixed near the top of the water tank; a controller connected to the drive motor, booster pump, water supply switch and liquid level gauge is fixed on the support part.

[0020] Preferably, water collecting troughs extending along the length direction of the prefabricated box beam are dug on the ground on both sides of the prefabricated box beam.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model comprises a support unit, a running unit, and a spray head. The running unit drives the support unit along the length of the prefabricated box girder, and utilizes a travel switch and a stop plate to achieve automatic reciprocating movement of the support unit along the prefabricated box girder. During this process, the spray head provides comprehensive spray curing on the top and sides of the prefabricated box girder, preventing shrinkage cracks and thereby ensuring the durability and aesthetics of the prefabricated box girder. The entire device is simple in structure and easy to implement, and compared to manual curing, it offers a degree of full automation. Furthermore, a water collection trough is provided to recycle water used for spray curing, conserving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the support portion of the utility model;

[0025] Figure 3 for Figure 1 a top view of the middle support portion;

[0026] Figure 4 This is a structural diagram of the water supply pipe of the utility model.

[0027] Description of main reference numerals:

[0028] 1. Prefabricated box beam;

[0029] 2. Support unit; 21. Base; 211. Travel switch; 212. Infrared anti-collision device; 213. Wire winding reel; 22. Support frame; 23. Water tank; 231. Liquid level gauge; 24. Booster pump;

[0030] 3. Traveling unit; 31. Guide rail; 311. Car stopper; 32. Driving motor; 33. Driven wheel; 34. Driving wheel;

[0031] 4. The first sprinkler head;

[0032] 5. Second sprinkler head;

[0033] 6. Water supply pipe; 61. Water supply switch;

[0034] 7. Controller;

[0035] 8. Water collection tank. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solution of this utility model. Obviously, the embodiments described are part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of this utility model.

[0037] Example

[0038] See attached Figure 1-4 , a fully automatic spray curing device for prefabricated box beams, comprising:

[0039] The support part 2 is arranged on the outside of the prefabricated box beam 1, and the support part 2 includes pedestals 21 symmetrically arranged on both sides of the prefabricated box beam 1 and support frames 22 with their bottom ends fixed on the pedestals 21 on both sides;

[0040] The travel part 3 that connects the support part 2 and drives the support part 2 to travel along the length direction of the precast box beam 1 includes guide rails 31 symmetrically laid on both sides of the precast box beam 1, a driving motor 32 fixed to one side of the pedestal 21, and a driven wheel 33 and a driving wheel 34 symmetrically arranged at the bottom of both ends of the pedestal 21 and rotatably connected to the pedestal 21; wherein the driving wheel 34 is fixedly connected to the output shaft of the driving motor 32; the driven wheel 33 and the driving wheel 34 are both guided and matched with the guide rail 31; it should be supplemented here that the contact surfaces of the driven wheel 33 and the driving wheel 34 with the guide rail 31 are concave inwardly, so as to prevent the driven wheel 33 and the driving wheel 34 from detaching from the guide rail 31; in addition, two driven wheels 33 are arranged at a distance at the bottom of one end of the pedestal 21, and two driving wheels 34 are arranged at a distance at the bottom of the other end of the pedestal 21; the guide rails 31 are laid at a distance of two on both sides of the precast box beam 1 and correspond to the driven wheels 33 and the driving wheels 34 at corresponding positions;

[0041] A plurality of first spray heads 4 are fixed on both sides of the support portion 2 and directed toward the side surfaces of the prefabricated box girder 1. It should be noted that the first spray heads 4 are fixed to the support frame 22, and during the fixing process, the spraying direction of the first spray heads 4 can be fixed according to actual needs so as to better spray the side surfaces of the prefabricated box girder 1.

[0042] A plurality of second spray heads 5 fixed to the top of the support portion 2 and spraying toward the top of the prefabricated box girder 1;

[0043] Among them, water tanks 23 are symmetrically fixed on the pedestals 21 on both sides of the support part 2, and booster pumps 24 are respectively provided in the water tanks 23. The water outlet of the booster pump 24 in one water tank 23 is connected to the first sprinkler head 4 through a pipe, and the water outlet of the booster pump 24 in the other water tank 23 is connected to the second sprinkler head 5 through a pipe.

[0044] In this embodiment, a baffle 311 is fixed to each end of the guide rail 31; a limit switch 211 corresponding to the baffle 311 and connected to the drive motor 32 is fixed to each end of the pedestal 21; when the limit switch 211 touches the baffle 311, the limit switch 211 is triggered, and the drive motor 32 reverses; secondly, an infrared anti-collision device 212 connected to the drive motor 32 is fixed to each end of the pedestal 21; when the infrared anti-collision device 212 detects an on-site worker, the infrared anti-collision device 212 is triggered, and the drive motor 32 stops. The provision of the infrared anti-collision device 212 can prevent the pedestal 21 from colliding with on-site workers during movement in this embodiment, thereby ensuring construction safety.

[0045] Secondly, in this embodiment, a water supply pipe 6 connected to an external water source is fixed to the outside of the support portion 2. The water supply pipe 6 extends vertically upward, with the top outlet curved downward into a U-shape. A water supply switch 61 corresponding to the base 21 is fixed to the water supply pipe 6, and a liquid level gauge 231 is fixed near the top of the water tank 23. A controller 7 connected to the drive motor 32, booster pump 24, water supply switch 61, and liquid level gauge 231 is fixed to the support frame 22 of the support portion 2. It should be noted that the controller 7 uses a Siemens PLC controller, which is relatively mature in the prior art.

[0046] Finally, in this embodiment, water collection troughs 8 are excavated on the ground on both sides of the prefabricated box girder 1, extending along its length. Furthermore, a winding drum 213 is installed atop the pedestals 21 on either side of the support portion 2. Specifically, a circular shaft is positioned at the center of the winding drum 213, rotating therewith, with both ends secured to the pedestal 21 via mounting brackets. The drive motor 32 is connected to an external power source via a cable, which is wound around the winding drum 213, allowing the cable to expand and contract.

[0047] The working principle of the device in this embodiment is briefly described below, specifically as follows:

[0048] During the spray maintenance operation, the support unit 2 begins at one end near the water supply pipe 6. The drive motor 32 is activated by the controller 7, which drives the driving wheel 34 to rotate. The driving wheel 34, through the friction between its guide rails 31, drives the entire support unit 2 to move along the length of the precast box girder 1. During the movement, the booster pump 24 is activated by the controller 7. Clean water in the water tank 23 is pumped into the pipeline through the booster pump 24 and sprayed out from the corresponding first and second spray heads 4 and 5. In this way, as the support unit 2 moves along the length of the precast box girder 1, the first and second spray heads 4 and 5 spray the sides and top of the precast box girder 1 at corresponding positions. When the support unit 2 moves to the other end, the limit switch 211 on the support unit 2 base 21 touches the vehicle stop 311 at that end position, triggering the limit switch 211, causing the drive motor 32 to reverse, and the walking unit 3 drives the support unit 2 to move to its initial position. During this process, the first and second spray heads 4 and 5 continue to spray.

[0049] When the base 21 of the support unit 2 moves to the position of the water supply pipe 6, the base 21 contacts the water supply switch 61 (which is a conventional travel switch). This triggers the water supply switch 61 and sends a signal to the controller 7, which then shuts down the drive motor 32 and the booster pump 24. At this point, the support unit 2 stops moving. The water supply pipe 6 then replenishes clean water from an external source into the water tank 23, causing the liquid level in the water tank 23 to rise. It should be noted that the water inlet end of the water supply pipe 6 is connected to the external water source via an external pump, which is also connected to the controller 7. When the liquid level in the water tank 23 rises to the position of the liquid level gauge 231, the liquid level gauge 231 sends a signal to the controller 7, which shuts down the external pump. The water supply pipe 6 no longer replenishes the water tank 23. Simultaneously, the controller 7 activates the drive motor 32 and the booster pump 24, causing the walking unit 3 to drive the support unit 2 to continue moving. Meanwhile, the first and second spray heads 4 and 5 continue spraying and curing. When the travel switch 211 on the pedestal 21 touches the baffle 311 near the end of the water supply pipe 6, the travel switch 211 is triggered and the drive motor 32 reverses again. This process is repeated to achieve continuous multiple spraying maintenance of the prefabricated box girder 1, and compared with manual maintenance, it has a certain degree of full automation.

[0050] Secondly, during the spray curing process, excess water from the spray curing drips onto the ground along the web and top flange of the prefabricated box girder 1. To ensure that a large amount of water does not accumulate in the curing ground area, and to collect the curing water for recycling, this embodiment has a water collecting trough 8 excavated on the ground on both sides of the prefabricated box girder 1, which extends along its length and is located on the inner side of the guide rail 31. The water collecting trough 8 is arranged parallel to the guide rail 31, and a certain slope is set from the center line of the base of the prefabricated box girder 1 to the guide rail 31 to facilitate the spray curing water to flow into the water collecting trough 8. At the same time, the water collecting trough 8 is also set with a certain slope. The curing water can flow to the water storage well according to the action of gravity, and can be recycled and reused after sedimentation and filtration.

[0051] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is apparent that many modifications and variations are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the present invention and their practical application, thereby enabling those skilled in the art to realize and utilize a variety of exemplary embodiments of the present invention and various options and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A fully automatic spray curing device for prefabricated box beams, characterized in that: include: A support portion provided on the outer side of the prefabricated box beam; A walking portion connected to the supporting portion and driving the supporting portion to move along the length direction of the prefabricated box girder; A plurality of first spray heads fixed on both sides of the support portion and spraying toward the side surfaces of the prefabricated box beam; a plurality of second spray heads fixed to the top of the support portion and spraying toward the top of the prefabricated box girder; Among them, water tanks are symmetrically fixed on both sides of the support part, and booster pumps are respectively provided in the water tanks. The water outlet of the booster pump in one water tank is connected to the first spray head through a pipe, and the water outlet of the booster pump in the other water tank is connected to the second spray head through a pipe.

2. The fully automatic spray curing device for prefabricated box beams according to claim 1 is characterized in that: The support part includes pedestals symmetrically arranged on both sides of the prefabricated box beam and a support frame with the bottom ends fixed on the pedestals on both sides; the water tank is fixed on the pedestals.

3. The fully automatic spray curing device for prefabricated box beams according to claim 2 is characterized in that: The walking part includes guide rails symmetrically laid on both sides of the prefabricated box beam, a driving motor fixed to one side of the pedestal, and driven wheels and driving wheels symmetrically arranged at both ends of the pedestal and rotatably connected to the pedestal; wherein, the driving wheel is fixedly connected to the output shaft of the driving motor; and the driven wheel and the driving wheel are both guided by the guide rails.

4. The fully automatic spray curing device for prefabricated box beams according to claim 3 is characterized in that: A baffle is fixed at both ends of the guide rail; a travel switch corresponding to the baffle and connected to the drive motor is fixed at both ends of the pedestal; when the travel switch touches the baffle, the travel switch is triggered and the drive motor reverses.

5. The fully automatic spray curing device for prefabricated box beams according to claim 4 is characterized in that: Infrared anti-collision devices connected to the driving motor are respectively fixed on both ends of the pedestal.

6. The fully automatic spray curing device for prefabricated box beams according to claim 4 is characterized in that: A water supply pipe connected to an external water source is fixed on the outer side of the support portion. The water supply pipe is vertically upward and the water outlet portion at the top is bent downward to form a U shape.

7. The fully automatic spray curing device for prefabricated box beams according to claim 6 is characterized in that: A water supply switch corresponding to the base is fixed on the water supply pipe, and a liquid level gauge is fixed near the top of the water tank; a controller connected to the drive motor, booster pump, water supply switch and liquid level gauge is fixed on the support part.

8. The fully automatic spray curing device for prefabricated box beams according to claim 1 is characterized in that: Water collecting troughs extending along the length direction of the prefabricated box beam are dug on the ground at both sides of the prefabricated box beam.

Images