Highway bridge precast beam maintenance device

Abstract

The invention relates to the technical field of highway bridge precast beams, and discloses a highway bridge precast beam maintenance device which comprises a water receiving tank, a beam bearing frame and a maintenance water tank, two symmetrically-arranged supporting seats are fixedly arranged at the bottom of the beam bearing frame, and the supporting seats are fixedly arranged at the top of the water receiving tank; a plurality of maintenance cavities which are symmetrically arranged in a surrounding mode are formed in the beam bearing frame, liquid leakage holes are formed in the tops of the multiple maintenance cavities, a liquid collecting pipe is arranged between the lower end of the maintenance water tank and the water receiving tank in a communicating mode, a supporting frame is fixedly arranged on the outer wall of the beam bearing frame, and a plurality of hollow plates which are symmetrically arranged in a triangular mode are fixedly arranged on the outer wall of the supporting frame; a flow guide pipe is arranged between every two adjacent hollow plates in a communicating mode. According to the highway bridge precast beam maintenance device, synchronous spraying maintenance can be conducted on a plurality of precast beams at the same time, it is guaranteed that the precast beams can be subjected to comprehensive spraying maintenance, meanwhile, the internal humidity and the water content of the precast beams can be detected, the spraying time of the precast beams is accurately controlled, and the precast beam maintenance effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated beams for highway bridges, and in particular to a maintenance device for prefabricated beams for highway bridges. Background Art

[0002] Precast beams for highway bridges are concrete beams or steel beams that are prefabricated in a prefabrication yard and then transported to the bridge construction site for installation. Concrete is a hydraulic material, and its strength growth needs to be carried out under certain humidity and temperature conditions. Therefore, the precast beams need to be cured. During the curing process, sufficient moisture is provided to the concrete through measures such as watering and covering with moisturizing materials, so that the cement can be fully hydrated.

[0003] After searching, the patent document with announcement number CN210651238U discloses a spray maintenance device for precast beams of highway bridges. The maintenance device places the precast beams neatly and orderly on the precast beam placement plate, and then pushes the slider to move to the bottom of the maintenance room to move the precast beam placement plate to the bottom of the nozzle. The water transported from the water tank is distributed through the hollow pipe and the water distribution plate, and is sprayed out by each nozzle. During the process of the nozzle spraying water, the control motor is started, and the motor drives the cam to rotate. The cam squeezes one side of the support plate, and the support plate generates a tilting force. Therefore, the water pipe, the water distribution plate and the nozzle will also be tilted, so that the direction of the nozzle spraying water can be changed, and the precast beams can be sprayed and maintained from multiple directions and angles without setting up multiple groups of nozzles.

[0004] However, the above-mentioned maintenance devices and the prior art maintenance devices all have certain defects: First, in the existing precast beam maintenance, a single fixed-position spray head is basically set inside the maintenance device. At this time, the water sprayed by the spray head can only contact the top of the precast beam, resulting in the side of the precast beam not being effectively and comprehensively sprayed, which also leads to the problem of uneven spray maintenance of the precast beam; Secondly, since there are certain limits on the spraying curing time and spraying amount of prefabricated beams, and the existing devices cannot effectively control the water spraying time and spraying amount, the prefabricated beams are easily exposed to water for a long time, which can easily cause excessive water content and affect the overall use strength of the prefabricated beams. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a maintenance device for precast beams of highway bridges, which is capable of performing synchronous spray maintenance on multiple precast beams at the same time, ensuring that the precast beams can receive comprehensive spray maintenance, while being able to detect the humidity and water content inside the precast beams, and accurately control the spray time of the precast beams to ensure the maintenance effect of the precast beams. It solves the problem that the water sprayed by the spray head can only contact the top of the precast beam, resulting in the side of the precast beam cannot be effectively and comprehensively sprayed, and also causes the spray maintenance of the precast beam to be uneven, and the spray maintenance time and spray amount of the precast beam are subject to certain limits, and the existing device cannot effectively control the spray time and spray amount of the water, resulting in the precast beam being in contact with the water for a long time, which easily causes excessive water content and affects the overall use strength of the precast beam.

[0006] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a maintenance device for precast beams of highway bridges, comprising a water receiving box, a beam support frame and a maintenance water tank, the bottom of the beam support frame is fixedly provided with two symmetrically arranged support seats, the support seats are fixedly arranged on the top of the water receiving box, the interior of the beam support frame is provided with a plurality of maintenance cavities which are arranged symmetrically around, the tops of the plurality of maintenance cavities are all provided with leakage holes, a liquid collecting pipe is connected between the lower end of the maintenance water tank and the water receiving box, a support frame is fixedly provided on the outer wall of the beam support frame, a plurality of hollow plates which are arranged symmetrically in a triangular pattern are fixedly provided on the outer wall of the support frame, a flow guide pipe is connected between two adjacent hollow plates, a liquid outlet pipe is provided between the top hollow plate and the top of the water receiving box, a liquid supply pump is fixedly provided on the pipe wall of the liquid outlet pipe, and a plurality of nozzles which are arranged at intervals are connected to the bottom of the hollow plate; A plurality of the curing chambers are rotatably provided with support cylinders, and a rotation curing mechanism for supporting the rotation of the support cylinders is provided between the rear end of the support cylinders and the back side of the beam support frame; A through hole is provided inside the beam support frame, a support plate is fixedly provided at the bottom of the inner wall of the through hole, and a synchronous rotation mechanism is provided between the support plate and the plurality of support tubes for driving the plurality of support tubes to rotate synchronously; The inner walls of the plurality of support tubes are each provided with a humidity detection component for monitoring the humidity inside the prefabricated beam.

[0007] Preferably, the rotating maintenance mechanism includes a support ring frame, which is fixed on the back side of the beam support frame and rotatably sleeved on the outside of the support tube, and the outer walls of the multiple support tubes are provided with clamping components for limiting the position of the precast beam.

[0008] Preferably, the clamping assembly includes a plurality of clamping bolts which are symmetrically arranged around the support tube, and the threaded ends of the clamping bolts are threadedly arranged on the side of the support tube.

[0009] Preferably, the synchronous rotation mechanism includes a plurality of transmission gears, a plurality of fixing bars arranged in a symmetrical manner are fixedly provided on the outer wall of the support tube, the transmission gear is sleeved on the outer side of the support tube and fixedly connected to the plurality of fixing bars, a rotating rod is rotatably penetrated inside the support plate, a driving gear is fixedly sleeved on the rear end of the rotating rod, a transmission hole is opened between each of the maintenance cavities and the through hole, and the side of the transmission gear penetrates the transmission hole and is arranged in cooperation with the driving gear; A worm gear is fixedly mounted on the front end of the rotating rod, a control motor is fixedly mounted on the lower end of the outer wall of the support plate, a worm is fixedly mounted on the output shaft of the control motor, and the worm is matched with the worm gear.

[0010] Preferably, the humidity detection assembly comprises a plurality of support covers arranged in a symmetrical manner, the support covers are fixedly arranged on the inner wall of the support tube, and the inner wall of the support cover is rotatably provided with a plurality of guide wheels arranged at intervals; The side wall of the guide wheel is provided with an annular groove, and the inner wall of the annular groove is fixed with a plurality of clamping springs arranged in a symmetrical manner. A humidity sensor is fixedly provided at the end of the clamping spring. A PLC controller is fixedly embedded at the lower end of the outer wall of the maintenance water tank, and the PLC controller is electrically connected to the control motor and the liquid supply pump.

[0011] Preferably, the inner walls of the plurality of support tubes are each provided with a plurality of strip-shaped water leakage holes which are symmetrically arranged around the inner wall, and the bottom of the inner wall of the through hole is provided with a plurality of drainage holes which are arranged at intervals.

[0012] Preferably, a water receiving filter is fixedly embedded on the upper end of the inner wall of the water receiving box, and the water receiving filter is arranged below the supporting beam frame.

[0013] Preferably, the control motor is fixedly connected to the outer wall of the support plate through its outer motor mounting seat.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a maintenance device for prefabricated beams of highway bridges, which has the following beneficial effects: 1. Through the provided beam support frame, support tube, rotating maintenance mechanism and clamping assembly, the prefabricated beam can be set in the support tube and then clamped and positioned. At the same time, under the support of the support ring frame, the support tube can drive the prefabricated beam to rotate, so that the hollow plate and nozzle above the support tube can evenly spray the water in the maintenance water tank to all parts of the surface of the prefabricated beam to ensure comprehensive spraying.

[0015] 2. Through the synchronous rotation mechanism, a driving gear can be set inside the beam support frame and meshed with the transmission gears on the outer sides of multiple support tubes. When the driving gear rotates, multiple transmission gears drive the support tubes to rotate at the same time, and multiple prefabricated beams can be quickly sprayed and maintained at the same time, thereby improving the overall use effect of the device.

[0016] 3. Through the support tube and humidity detection component, the guide wheel can not only guide the prefabricated beam stably when it is transported into the support tube, but also set a humidity sensor on the outside of the guide wheel. At the same time, the humidity sensor detects the humidity on the outside of the prefabricated beam, and cooperates with the PLC controller to control the spraying speed of the water and the rotation speed of the support tube, so as to ensure that the spraying water is accurately controlled and the maintenance effect of the prefabricated beam is moderate.

[0017] 4. Through the water receiving box, strip leakage holes and drainage holes, the water after spraying can be stably guided and filtered, and reused, reducing the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a highway bridge prefabricated beam maintenance device proposed by the present invention; Figure 2 for Figure 1 Rear view of Figure 3 for Figure 2 A schematic diagram of a three-dimensional structure of multiple support cylinders; Figure 4 for Figure 3 A magnified view of the structure of the local A part; Figure 5 for Figure 1 A schematic diagram of the three-dimensional structure of the middle support cover; Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the intermediate water tank; Figure 7 for Figure 5 Cross-sectional view of the middle guide wheel.

[0019] In the figure: 1 water receiving tank, 2 beam support frame, 3 maintenance water tank, 4 support seat, 5 liquid collecting pipe, 6 support frame, 7 hollow plate, 8 guide pipe, 9 liquid outlet pipe, 10 liquid supply pump, 11 nozzle, 12 support cylinder, 13 support plate, 14 support ring frame, 15 fastening bolt, 16 transmission gear, 17 rotating rod, 18 driving gear, 19 worm gear, 20 control motor, 21 worm, 22 support cover, 23 guide wheel, 24 fastening spring, 25 humidity sensor, 26 PLC controller, 27 strip leakage hole, 28 water receiving filter, 29 drainage hole, 30 transmission hole, 31 fixing strip. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-7 A maintenance device for prefabricated beams of a highway bridge comprises a water receiving box 1, a beam support frame 2 and a maintenance water tank 3. A water receiving filter screen 28 is fixedly embedded at the upper end of the inner wall of the water receiving box 1. The water receiving filter screen 28 is arranged below the beam support frame 2. Two symmetrically arranged support seats 4 are fixedly arranged at the bottom of the beam support frame 2. The support seats 4 are fixedly arranged at the top of the water receiving box 1. A plurality of maintenance cavities arranged symmetrically around the beam support frame 2 are arranged inside. Liquid leakage holes are opened on the tops of the plurality of maintenance cavities. A liquid collecting pipe 5 is arranged between the lower end of the maintenance water tank 3 and the water receiving box 1. The beam support frame 2 A support frame 6 is fixedly provided on the outer wall, and a plurality of hollow plates 7 arranged in triangular symmetry are fixedly provided on the outer wall of the support frame 6, a flow guide pipe 8 is connected between two adjacent hollow plates 7, a liquid outlet pipe 9 is provided between the top hollow plate 7 and the top of the water receiving box 1, a liquid supply pump 10 is fixedly sleeved on the pipe wall of the liquid outlet pipe 9, a plurality of nozzles 11 arranged at intervals are connected to the bottom of the hollow plate 7, a plurality of strip-shaped water leakage holes 27 arranged in a surrounding symmetry are opened on the inner walls of the plurality of support tubes 12, and a plurality of drainage holes 29 arranged at intervals are opened on the bottom of the inner wall of the through hole.

[0022] Before curing the precast beams, multiple precast beams are placed in multiple curing cavities in turn and located in the support tubes 12. The positions of the precast beams are then fixed, and the multiple support tubes 12 are then driven to rotate so that the multiple precast beams can rotate stably. While the support tubes 12 are rotating, the liquid supply pump 10 can be started to allow the water inside the curing water tank 3 to enter the top hollow plate 7 through the liquid outlet pipe 9, and to enter the hollow plates 7 at the lower ends of both sides with the help of two guide pipes 8. At this time, with the connection of multiple nozzles 11, the water can enter the curing cavity through the leakage hole, and contact the outer wall of the precast beam through the strip leakage hole 27, so that the precast beam can be subjected to comprehensive external spray curing, and the sprayed water can enter the water receiving box 3 through the drainage hole 29 to be collected, and enter the curing water tank 3 through the collecting pipe 5 for reuse.

[0023] In order to enable the multiple support tubes 2 to drive the multiple prefabricated beams to rotate, Figure 1-3As shown, a support tube 12 is rotatably inserted into each of the multiple maintenance cavities, and a rotation maintenance mechanism for supporting the rotation of the support tube 12 is provided between the rear end of the support tube 12 and the back side of the beam support frame 2. The rotation maintenance mechanism includes a support ring frame 14, which is fixedly arranged on the back side of the beam support frame 2 and rotatably sleeved on the outer side of the support tube 12. The outer walls of the multiple support tubes 12 are provided with a clamping assembly for limiting the position of the precast beam, and the clamping assembly includes a plurality of tightening bolts 15 symmetrically arranged in a circumferential manner, and the threaded ends of the tightening bolts 15 are threadedly arranged on the side of the support tube 12.

[0024] When the prefabricated beam is located in the support tube 12, one end of the prefabricated beam is released from the multiple clamping bolts 15. At this time, the multiple clamping bolts 15 are rotated synchronously, so that the clamping bolts 15 tightly squeeze the prefabricated beam from the outside and stably set it in the support tube 2. At this time, the position of the prefabricated beam is fixed, and then under the rotation support of the support ring frame 14, the support tube 12 can drive the prefabricated beam to rotate stably.

[0025] In order to enable multiple support tubes 2 and prefabricated beams to rotate simultaneously and quickly complete the maintenance work, Figure 3-4 As shown, a through hole is provided inside the support frame 2, a support plate 13 is fixedly provided at the bottom of the inner wall of the through hole, a synchronous rotation mechanism for driving the multiple support tubes 12 to rotate synchronously is provided between the support plate 13 and the multiple support tubes 12, the synchronous rotation mechanism includes multiple transmission gears 16, multiple fixing bars 31 symmetrically arranged in a circle are fixedly provided on the outer wall of the support tube 12, the transmission gear 16 is sleeved on the outer side of the support tube 12 and fixedly connected to the multiple fixing bars 31, a rotating rod 17 is rotatably penetrated inside the support plate 13, a driving gear 18 is fixedly sleeved at the rear end of the rotating rod 17, a transmission hole 30 is provided between each maintenance cavity and the through hole, and the side of the transmission gear 16 passes through the transmission hole 30 and is arranged in cooperation with the driving gear 18; A worm gear 19 is fixedly mounted on the front end of the rotating rod 17, and a control motor 20 is fixedly mounted on the lower end of the outer wall of the support plate 13. The control motor 20 is fixedly connected to the outer wall of the support plate 13 through its outer motor mounting seat, and a worm 21 is fixedly mounted on the output shaft of the control motor 20. The worm 21 is matched with the worm gear 19.

[0026] When the precast beam is located in the support tube 12 and is clamped in place, the control motor 20 can be started so that the worm 21 is driven to rotate. At this time, with the rotation coordination of the worm 21 and the worm wheel 19, the worm wheel 19 drives the rotating rod 17 to rotate, and drives the driving gear 16 to rotate synchronously. Since the driving gear 16 cooperates with multiple transmission gears 16 at the same time, when the driving gear 18 rotates, with the support of multiple transmission holes 30, multiple transmission gears 16 drive the support tube 12 to rotate through the fixed bar 31. At this time, multiple precast beams rotate at the same time and receive stable spraying maintenance.

[0027] In order to control the spraying amount of curing water during the spray curing process and accurately control the spraying degree of the precast beam, Figure 1 and Figure 3-5 as well as Figure 7 As shown, the inner walls of the plurality of support tubes 12 are provided with a humidity detection assembly for monitoring the humidity inside the precast beam, and the humidity detection assembly includes a plurality of support covers 22 arranged symmetrically around the inner wall of the support tube 12, and the support covers 22 are fixedly arranged on the inner wall of the support tube 12, and the inner wall of the support covers 22 is rotatably provided with a plurality of guide wheels 23 arranged at intervals; The side wall of the guide wheel 23 is provided with an annular groove, and the inner wall of the annular groove is fixed with a plurality of clamping springs 24 arranged in a symmetrical manner. A humidity sensor 25 is fixedly provided at the end of the clamping spring 24. A PLC controller 26 is fixedly embedded at the lower end of the outer wall of the maintenance water tank 3, and the PLC controller 26 is electrically connected and cooperated with the control motor 20 and the liquid supply pump 10.

[0028] When the precast beam enters the support tube 12, the precast beam can be stably delivered into the support tube 12 through a plurality of rotatable guide wheels 23. When the precast beam contacts the outer wall of the guide wheel 23, a plurality of humidity sensors 25 can contact the outer wall of the precast beam under the push of the elastic force of the progressive spring 24. As the maintenance work continues, the humidity sensor 25 controls the surface and internal humidity of the precast beam. When the humidity of the precast beam is high, the liquid supply pump 10 can be controlled to run slowly to reduce the spraying amount of the maintenance water. At this time, the rotation speed of the support tube 12 is increased to reduce the contact time between the water and the surface of the precast beam to ensure that the humidity is reduced and controlled. When the water content is low, the liquid supply of the liquid supply pump 10 can be increased, and the rotation rate of the support tube 12 can be slowed down at the same time, so that the water can increase the contact time with the surface of the precast beam, so that the water can penetrate into the interior of the precast beam to complete sufficient maintenance.

[0029] In summary, when the highway bridge precast beam maintenance device is in use, multiple precast beams are placed in multiple maintenance cavities in sequence and located in the support tube 12. When the precast beams enter the support tube 12, the precast beams can be stably fed into the support tube 12 through multiple rotatable guide wheels 23, and then the multiple tightening bolts 15 are synchronously rotated so that the tightening bolts 15 tightly squeeze the precast beams from the outside and stably set in the support tube 2. At this time, the position of the precast beams is fixed, and then under the rotation support of the support ring frame 14, the support tube 12 can drive the precast beams to rotate stably, and then drive the multiple support tubes 12 to rotate. The plurality of precast beams can be stably rotated, and when the precast beam is located in the support tube 12 and is clamped and positioned, the control motor 20 can be started to drive the worm 21 to complete the rotation. At this time, under the rotation cooperation of the worm 21 and the worm wheel 19, the worm wheel 19 drives the rotating rod 17 to rotate, and drives the driving gear 16 to rotate synchronously. Since the driving gear 16 cooperates with the plurality of transmission gears 16 at the same time, when the driving gear 18 rotates, under the support of the plurality of transmission holes 30, the plurality of transmission gears 16 drive the support tube 12 to rotate through the fixing bar 31. At this time, the plurality of precast beams rotate at the same time and receive stable spraying maintenance, and in the support tube 12 While rotating, the liquid supply pump 10 can be started to allow the water inside the maintenance water tank 3 to enter the top hollow plate 7 through the liquid outlet pipe 9, and the water can enter the hollow plates 7 at the lower ends of both sides with the help of two guide pipes 8. At this time, under the connection of multiple nozzles 11, the water can enter the maintenance cavity through the leakage hole, and contact the outer wall of the prefabricated beam through the strip leakage hole 27, so that the prefabricated beam can be subjected to comprehensive external spray maintenance. When the prefabricated beam contacts the outer wall of the guide wheel 23, at this time, under the push of the elastic force of the clamping spring 24, multiple humidity sensors 25 can contact the outer wall of the prefabricated beam. As the maintenance work continues, the humidity sensors 25 The surface and internal humidity of the precast beam are controlled. When the humidity of the precast beam is high, the liquid supply pump 10 can be controlled to run slowly to reduce the spraying amount of the curing water. At this time, the rotation speed of the support cylinder 12 is increased to reduce the contact time between the water and the surface of the precast beam to ensure that the humidity is reduced and controlled. When the water content is low, the liquid supply of the liquid supply pump 10 can be increased, and the rotation rate of the support cylinder 12 can be slowed down at the same time, so that the water can increase the contact time with the surface of the precast beam, so that the water can penetrate into the interior of the precast beam to complete sufficient curing. The sprayed water can enter the water receiving box 3 through the drainage hole 29 to be collected, and enter the curing water tank 3 through the liquid collecting pipe 5 for reuse.

[0030] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A maintenance device for prefabricated beams of a highway bridge, comprising a water receiving tank (1), a beam support frame (2) and a maintenance water tank (3), characterized in that: Two symmetrically arranged support seats (4) are fixedly provided at the bottom of the beam support frame (2), and the support seats (4) are fixedly provided at the top of the water receiving box (1). A plurality of curing cavities arranged in a circumferential and symmetrical manner are provided inside the beam support frame (2), and a plurality of liquid leakage holes are provided at the tops of the curing cavities. A liquid collecting pipe (5) is provided between the lower end of the curing water tank (3) and the water receiving box (1). A support frame (6) is fixedly provided on the outer wall of the beam support frame (2), and a plurality of triangularly symmetrically arranged hollow plates (7) are fixedly provided on the outer wall of the support frame (6). A flow guide pipe (8) is provided between two adjacent hollow plates (7). A liquid outlet pipe (9) is provided between the top hollow plate (7) and the top of the water receiving box (1), and a liquid supply pump (10) is fixedly provided on the pipe wall of the liquid outlet pipe (9). A plurality of nozzles (11) arranged at intervals are provided at the bottom of the hollow plate (7). A plurality of the curing chambers are each provided with a support tube (12) rotatably inserted therein, and a rotation curing mechanism for supporting the rotation of the support tube (12) is provided between the rear end of the support tube (12) and the back side of the beam support frame (2); A through hole is provided inside the beam support frame (2), a support plate (13) is fixedly provided at the bottom of the inner wall of the through hole, and a synchronous rotation mechanism for driving the multiple support cylinders (12) to rotate synchronously is provided between the support plate (13) and the multiple support cylinders (12); The inner walls of the plurality of support tubes (12) are each provided with a humidity detection component for monitoring the humidity inside the prefabricated beam.

2. A highway bridge precast beam maintenance device according to claim 1, characterized in that: The rotating maintenance mechanism comprises a support ring frame (14), wherein the support ring frame (14) is fixedly arranged on the back side of the beam support frame (2) and is rotatably sleeved on the outside of the support tube (12), and the outer walls of the plurality of support tubes (12) are provided with clamping components for limiting the position of the precast beam.

3. A highway bridge precast beam maintenance device according to claim 2, characterized in that: The clamping assembly comprises a plurality of clamping bolts (15) which are arranged in a circumferentially symmetrical manner, wherein the threaded ends of the clamping bolts (15) are threadedly arranged on the side of the support tube (12).

4. A highway bridge precast beam maintenance device according to claim 1, characterized in that: The synchronous rotation mechanism comprises a plurality of transmission gears (16); the outer wall of the support tube (12) is fixedly provided with a plurality of fixing bars (31) arranged in a symmetrical manner; the transmission gear (16) is sleeved on the outer side of the support tube (12) and fixedly connected to the plurality of fixing bars (31); a rotating rod (17) is rotatably penetrated inside the support plate (13); a driving gear (18) is fixedly sleeved on the rear end of the rotating rod (17); a transmission hole (30) is provided between each of the curing cavities and the through hole; a side portion of the transmission gear (16) penetrates the transmission hole (30) and is arranged in cooperation with the driving gear (18); A worm gear (19) is fixedly mounted on the front end of the rotating rod (17), a control motor (20) is fixedly mounted on the lower end of the outer wall of the support plate (13), a worm (21) is fixedly mounted on the output shaft of the control motor (20), and the worm (21) is arranged in coordination with the worm gear (19).

5. The highway bridge precast beam maintenance device according to claim 1, characterized in that: The humidity detection assembly comprises a plurality of support covers (22) arranged in a symmetrical manner around the support tube (12), the support covers (22) being fixedly arranged on the inner wall of the support tube (12), and the inner wall of the support cover (22) being rotatably provided with a plurality of guide wheels (23) arranged at intervals; The side wall of the guide wheel (23) is provided with an annular groove, the inner wall of the annular groove is fixedly provided with a plurality of symmetrically arranged holding springs (24), the ends of the holding springs (24) are fixedly provided with humidity sensors (25), and the lower end of the outer wall of the maintenance water tank (3) is fixedly embedded with a PLC controller (26), the PLC controller (26) being electrically connected to the control motor (20) and the liquid supply pump (10).

6. A highway bridge precast beam maintenance device according to claim 1, characterized in that: The inner walls of the plurality of support tubes (12) are each provided with a plurality of strip-shaped water leakage holes (27) arranged in a symmetrical manner around the support tubes, and the bottom of the inner wall of the through hole is provided with a plurality of drainage holes (29) arranged at intervals.

7. A highway bridge precast beam maintenance device according to claim 1, characterized in that: A water receiving filter screen (28) is fixedly embedded on the upper end of the inner wall of the water receiving box (1), and the water receiving filter screen (28) is arranged below the supporting beam frame (2).

8. A highway bridge precast beam maintenance device according to claim 4, characterized in that: The control motor (20) is fixedly connected to the outer wall of the support plate (13) via its outer motor mounting seat.

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