Constant-humidity maintenance device for concrete pipeline

Abstract

The invention discloses a concrete pipeline constant-humidity curing device, and relates to the field of concrete curing, the concrete pipeline constant-humidity curing device comprises a door-shaped frame, a driving motor is fixedly connected to the side face of the door-shaped frame, a driving shaft is fixedly connected to a rotor of the driving motor, and a one-way transmission mechanism is fixedly connected to the middle of the driving shaft; the tail end of the driving shaft is fixedly connected with a moving assembly used for driving the door-shaped frame to move, the door-shaped frame is rotationally connected with a spraying shaft parallel to the driving shaft, the spraying shaft is in transmission connection with the driving shaft, and a movable spraying assembly is arranged on the outer side of the spraying shaft. Intermittent movement of the device can be realized through driving of a driving motor, so that the arranged pipelines can be fully soaked by utilizing a spraying assembly in each stopping process, and the maintenance effect is ensured; the spraying assembly is driven by the driving motor and can rotate while moving, water is evenly sprayed, spraying dead angles are effectively avoided, and the problem of pipeline quality caused by poor maintenance is avoided.

Description

Technical Field

[0001] The present invention relates to the field of concrete maintenance, and specifically to a constant humidity maintenance device for concrete pipes. Background Art

[0002] In the modern field of pipe production and manufacturing, pipe maintenance is a key link to ensure its quality and service life. At present, the commonly used pipe maintenance methods mostly use fixed spraying devices or simply moving spraying equipment to maintain the arranged pipes.

[0003] However, there are many drawbacks in the existing technologies. Some maintenance devices have complex structures and cumbersome operations, which not only increase the manufacturing cost and maintenance difficulty of the equipment, but also reduce the work efficiency. In addition, when spraying, it cannot be evenly sprayed. Especially when spraying and maintaining the arranged pipes, there are easily spraying dead angles, resulting in poor pipe maintenance effects, which in turn affect the pipe quality and easily cause problems such as insufficient pipe strength and poor durability. These defects seriously restrict the quality and efficiency of pipe maintenance and urgently need to be improved.

[0004] Therefore, technical personnel in this field have proposed a constant humidity maintenance device for concrete pipes to solve the problems raised in the above background. Summary of the Invention

[0005] The purpose of the present invention is to provide a constant humidity maintenance device for concrete pipes to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A constant humidity maintenance device for concrete pipes includes a gantry. A driving motor is fixedly connected to the side of the gantry. A driving shaft is fixedly connected to the rotor of the driving motor. A one-way transmission mechanism is fixedly connected to the middle of the driving shaft. A moving component for driving the gantry to move is fixedly connected to the end of the driving shaft. A spraying shaft parallel to the driving shaft is rotatably connected to the gantry. The spraying shaft is in transmission connection with the driving shaft. A movable spraying component is arranged outside the spraying shaft.

[0008] As a further solution of the present invention: A plurality of moving wheels are fixedly connected to the bottom of the gantry.

[0009] As a further solution of the present invention: A driving gear is fixedly connected to the outside of the driving shaft, and a driven gear is fixedly connected to the outside of the spraying shaft. The driving gear is meshed with the driven gear.

[0010] As a further solution of the present invention: The one-way transmission mechanism includes driving disks and chucks respectively connected to both ends of the driving shaft. The driving disk is connected with a locking tooth through a torsion spring. Slots are evenly arranged inside the chuck. The locking tooth is in one-way transmission cooperation with the chuck.

[0011] As a further solution of the present invention: the moving component includes a positioning shaft rotatably connected to the portal frame, the positioning shaft is transmission-connected to the drive shaft, the end of the positioning shaft is fixedly connected to an active dial, the portal frame is rotatably connected to an axle, the axle is located below the positioning shaft, the outer side of the axle is fixedly connected to a driven sheave, the active dial cooperates with the driven sheave, and the outer end of the axle is fixedly connected to the drive wheel.

[0012] As a further solution of the present invention: a photoelectric switch bracket is fixedly connected to the portal frame, a photoelectric switch is connected to the photoelectric switch bracket, and the photoelectric switch realizes signal transmission and steering control of the drive motor through the slot shielding on the driven groove wheel.

[0013] As a further solution of the present invention: the spray shaft is a threaded shaft, and a sliding frame is threadedly connected to the outer side of the spray shaft. The sliding frame is slidably connected to the drive shaft. A positioning swing shaft is rotatably connected to the sliding frame, and the swing center of the positioning swing shaft is parallel to the axis of the spray shaft. The spray assembly includes a rotating nozzle, a spray disc, a hose and a water tank. The rotating nozzle is rotatably connected to the positioning swing shaft. The spray disc is fixedly connected to the bottom of the rotating nozzle, and the top of the rotating nozzle is connected to the water tank through a hose. The water tank is fixedly set on the top of the door frame.

[0014] As a further solution of the present invention: the outer side of the rotating nozzle is rotatably connected to a spring connecting tube, and a tension spring is fixedly connected to the spring connecting tube. The other end of the tension spring is connected to the sliding frame. The rotating nozzle is pressed against the door frame under the action of the tension spring. The edge position where the door frame and the rotating nozzle are in contact is wavy and a transmission tooth is fixedly connected to the contact surface. A follower gear is fixedly connected to the outer side of the rotating nozzle, and the follower gear cooperates with the transmission tooth.

[0015] As a further solution of the present invention: a contact switch is fixedly connected to a side of the sliding frame away from the moving component, and the motor is reversed when the contact switch contacts and cooperates with the door frame.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: ① The structural design is simple and exquisite, and the operation is convenient. Relying on the power of the driving motor, the intermittent movement of the device is realized, so that the spray component can deeply and fully soak the neatly arranged pipes during each pause, providing solid protection for pipeline maintenance. ② The spray component is also driven by the driving motor and rotates synchronously during the movement of the device, so that water is evenly sprinkled and the pipeline is covered in all directions, effectively eliminating the spray blind spot, and eliminating the pipeline quality hidden dangers caused by insufficient maintenance from the root, thereby greatly improving the quality and efficiency of pipeline maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a concrete pipe constant humidity maintenance device from the first perspective;

[0018] Figure 2 It is a schematic structural diagram of the second perspective of a constant humidity maintenance device for concrete pipes;

[0019] Figure 3 It is a schematic structural diagram of the third perspective of a constant humidity maintenance device for concrete pipes;

[0020] Figure 4 It is a schematic diagram of a driven sprocket wheel and its partial connection structure in a constant humidity maintenance device for concrete pipes;

[0021] Figure 5 It is a partial enlarged view of the position of the sliding frame in a constant humidity maintenance device for concrete pipes;

[0022] Figure 6 It is a schematic structural diagram of a one-way transmission mechanism in a constant humidity maintenance device for concrete pipes.

[0023] In the figure: 1, gantry; 2, drive motor; 3, drive shaft; 4, one-way transmission mechanism; 5, moving component; 6, spraying shaft; 7, spraying component; 8, moving wheel; 9, driving gear; 10, driven gear; 11, driving disc; 12, ferrule; 13, engaging tooth; 14, card slot; 15, positioning shaft; 16, driving dial; 17, wheel shaft; 18, driven sprocket wheel; 19, driving wheel; 20, photoelectric switch bracket; 21, sliding frame; 22, positioning pendulum shaft; 23, rotating spray pipe; 24, spraying disc; 25, hose; 26, water tank; 27, spring connecting pipe; 28, tension spring; 29, transmission tooth; 30, follower gear; 31, contact switch. Specific embodiments

[0024] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0028] Embodiment 1: Please refer to Figures 1 to 4 , a constant humidity maintenance device for concrete pipes, including a gantry 1, a driving motor 2 is fixedly connected to the side of the gantry 1, a driving shaft 3 is fixedly connected to the rotor of the driving motor 2, a one-way transmission mechanism 4 is fixedly connected to the middle of the driving shaft 3, a moving component 5 for driving the movement of the gantry 1 is fixedly connected to the end of the driving shaft 3, a spraying shaft 6 parallel to the driving shaft 3 is rotatably connected to the gantry 1, the spraying shaft 6 is in transmission connection with the driving shaft 3, and a movable spraying component 7 is arranged outside the spraying shaft 6.

[0029] During use, install and debug the equipment, move the device to the arranged concrete pipes, add water to the spraying component 7, turn on the driving motor 2, the driving motor 2 rotates to drive the driving shaft 3 to rotate, the driving shaft 3 drives the moving component 5 to act through the one-way transmission mechanism 4, so that the device moves forward along the direction of the pipe arrangement. After the spraying component 7 arranged outside the spraying shaft 6 starts to work, water is sprayed onto the concrete pipes to achieve maintenance. The setting of the one-way transmission mechanism 4 makes the driving motor 2 only able to drive the moving component 5 to move forward when rotating forward or backward during rotation, and reverse rotation will not drive the moving component 5 to move.

[0030] A plurality of moving wheels 8 are fixedly connected to the bottom of the gantry 1. The moving wheels 8 facilitate the movement of the gantry 1 and can move along the direction of the arrangement of the concrete pipes during the driving of the driving wheel 19. A driving gear 9 is fixedly connected to the outside of the driving shaft 3, a driven gear 10 is fixedly connected to the outside of the spraying shaft 6, and the driving gear 9 and the driven gear 10 are meshed with each other. The gear set composed of the driving gear 9 and the driven gear 10 achieves the purpose of driving the spraying shaft 6 to move synchronously with the driving shaft 3. Belt drive or chain drive can also be used, and a gearbox can be set during the transmission process to change the transmission ratio.

[0031] Please refer to Figure 6, the one-way transmission mechanism 4 includes a driving disk 11 and a clamping sleeve 12 respectively connected to both ends of the driving shaft 3. The driving disk 11 is connected with a clamping tooth 13 through a torsion spring. The inner side of the clamping sleeve 12 is evenly provided with clamping grooves 14, and the clamping tooth 13 is in one-way transmission cooperation with the clamping sleeve 12. The above content specifically discloses an implementation manner of the one-way transmission mechanism 4, whose structure is similar to that of a bicycle flywheel mechanism, so as to achieve the purpose of one-way transmission. In addition, other one-way transmission structures can also be used to achieve the purpose of one-way driving.

[0032] Please refer to Figure 3 and Figure 4 , the moving component 5 includes a positioning shaft 15 rotatably connected to the gantry 1. The positioning shaft 15 is in transmission connection with the driving shaft 3. The end of the positioning shaft 15 is fixedly connected with a driving dial 16. A wheel shaft 17 is rotatably connected to the gantry 1. The wheel shaft 17 is located below the positioning shaft 15. A driven sprocket wheel 18 is fixedly connected to the outer side of the wheel shaft 17. The driving dial 16 is in cooperation with the driven sprocket wheel 18. The outer end of the wheel shaft 17 is fixedly connected with a driving wheel 19.

[0033] During the process of the driving shaft 3 driving the moving component 5 to move, it will first drive the positioning shaft 15 to rotate. The rotation of the positioning shaft 15 drives the driving dial 16 to rotate. When the driving dial 16 rotates one week, it can drive the driven sprocket wheel 18 to rotate an angle of one slot. With the corresponding number of slots and the diameter of the driving wheel 19, the spraying component 7 of the forward moving device can just move from one row of concrete pipes to the position of another row of concrete pipes each time. The number of slots determines the rotation angle. The number of slots of the sprocket wheel mechanism is generally between 3 and 8, that is, the rotation angle corresponds to between 45° and 120°. And the appropriate diameter of the driving wheel 19 and the corresponding rotation angle setting can set the corresponding arc length, that is, the distance of one-time rotation and forward movement. This distance exactly conforms to the distance between two rows of the concrete pipe arrangement. The above conditions enable the spraying component 7 to exactly carry out maintenance row by row during work. However, if the above parameters are designed randomly, although it cannot exactly carry out maintenance row by row, when the moving distance is less than the row spacing, maintenance can also be achieved.

[0034] A photoelectric switch bracket 20 is fixedly connected to the gantry 1. A photoelectric switch is connected to the photoelectric switch bracket 20. The photoelectric switch realizes signal transmission and the steering control of the driving motor 2 through the occlusion of the slots on the driven sprocket wheel 18.

[0035] The photoelectric switch is installed on the photoelectric switch bracket 20. The photoelectric switch has a transmitting part, a receiving part and a detecting part. The transmitting part and the receiving part are respectively installed on both sides of the driven sprocket wheel 18, and the driven sprocket wheel 18 acts as the detecting part to detect the position of the slot, so that the driving motor 2 reverses after the moving component 5 moves forward once. At this time, the driving motor 2 drives the spraying component 7 to reciprocate and spray.

[0036] Example 2: On the basis of the previous example, the following improvements are also made. Please refer to Figure 5 : The spray shaft 6 is a threaded shaft. A sliding frame 21 is threadedly connected to the outside of the spray shaft 6. The sliding frame 21 is slidably connected to the drive shaft 3. A positioning swing shaft 22 is rotatably connected to the sliding frame 21. The swing center of the positioning swing shaft 22 is parallel to the axis of the spray shaft 6. The spray assembly 7 includes a rotating spray pipe 23, a spray disc 24, a hose 25 and a water tank 26. The rotating spray pipe 23 is rotatably connected to the positioning swing shaft 22. The spray disc 24 is fixedly connected to the bottom of the rotating spray pipe 23. The top of the rotating spray pipe 23 is connected to the water tank 26 through the hose 25. The water tank 26 is fixedly arranged on the top of the gantry 1.

[0037] The spray shaft 6 rotates reciprocally under the drive of the drive shaft 3, thereby driving the sliding frame 21 to move reciprocally. During the movement, the rotating spray pipe 23 is driven to move reciprocally, and the spray disc 24 changes its position reciprocally for spraying. The hose 25 guides the water inside the water tank 26 into the spray disc 24. A water pump can be arranged at the end of the hose 25 located in the water tank 26 to improve the spraying efficiency and uniformity. Spraying by using the self-weight of water will affect the spraying effect after the water level drops.

[0038] A spring connecting pipe 27 is rotatably connected to the outside of the rotating spray pipe 23. A tension spring 28 is fixedly connected to the spring connecting pipe 27. The other end of the tension spring 28 is connected to the sliding frame 21. The rotating spray pipe 23 abuts against the gantry 1 under the action of the tension spring 28. The edge position of the gantry 1 that abuts against the rotating spray pipe 23 is wavy and a transmission tooth 29 is fixedly connected to the abutting surface. A follower gear 30 is fixedly connected to the outside of the rotating spray pipe 23. The follower gear 30 is engaged with the transmission tooth 29. The surface of the rotating spray pipe 23 that abuts against the gantry 1 can be the side surface of the gantry 1, or a wavy groove can be opened on the top of the gantry 1, and passing the rotating spray pipe 23 through the groove can also achieve the corresponding purpose.

[0039] Due to the follower gear 30 being arranged on the outside of the rotating spray pipe 23, it will rotate during the engagement with the transmission tooth 29, thereby driving the spray disc 24 to rotate, greatly improving the spraying uniformity. The follower gear 30 is generally a non-standard gear in order to cooperate with the wavy transmission tooth 29, and the transmission tooth 29 can also be set as required. Since the arrangement shape between pipelines is not strip-shaped but circularly arranged in multiple, the setting of the transmission tooth 29 at the corresponding position can be changed according to the spraying effect, so that the spray disc 24 does not rotate at this position to achieve a better spraying effect. When the contact switch 31 is triggered, the drive motor 2 reverses again, and the device moves forward to perform the maintenance of the next row of pipelines. The maintenance process of the whole device is highly automated and the use effect is better.

[0040] One side of the sliding frame 21 away from the moving component 5 is fixedly connected with a contact switch 31. When the contact switch 31 abuts against the gantry 1, the motor reverses. It should be noted that controlling the forward and reverse rotation of the motor through the photoelectric switch and the contact switch is a well-known technology in the technical field, and will not be elaborated in this text.

[0041] Working principle: When in use, install and debug the equipment, move the device to the arranged concrete pipes, add water to the spray component 7, and start the driving motor 2. The driving motor 2 rotates to drive the driving shaft 3 to rotate. The driving shaft 3 drives the moving component 5 to act through the one-way transmission mechanism 4, so that the device moves forward along the pipe arrangement direction. After the spray component 7 arranged outside the spray shaft 6 starts to work, water is sprayed onto the concrete pipes to achieve maintenance. The setting of the one-way transmission mechanism 4 enables the driving motor 2 to drive the moving component 5 to move forward only when rotating forward or backward during the rotation process, and reverse rotation will not drive the moving component 5 to move. During the process of the driving shaft 3 driving the moving component 5 to move, it will first drive the positioning shaft 15 to rotate. The positioning shaft 15 rotates to drive the active dial 16 to rotate. When the active dial 16 rotates one week, it can drive the driven sprocket 18 to rotate by the angle of one slot. With the corresponding number of slots and the diameter of the driving wheel 19, each time the spray component 7 of the device moves forward, it can just move from one row of concrete pipes to the position of another row of concrete pipes. The number of slots determines the rotation angle. The number of slots of the sprocket mechanism is generally between 3 and 8, that is, the rotation angle corresponds to between 45° and 120°. And the appropriate diameter of the driving wheel 19 and the corresponding rotation angle setting can set the corresponding arc length, that is, the distance moved forward by one rotation, and this distance exactly conforms to the distance between two rows in the concrete pipe arrangement. The above conditions enable the spray component 7 to exactly maintain row by row during work. However, if the above parameters are set randomly, although it cannot exactly maintain row by row, when the moving distance is less than the row spacing, maintenance can also be achieved. The photoelectric switch is installed on the photoelectric switch bracket 20. The photoelectric switch has a transmitting part, a receiving part and a detecting part. The transmitting part and the receiving part are respectively installed on both sides of the driven sprocket 18, and the driven sprocket 18 acts as the detecting part to detect the position of the slot, so that the driving motor 2 reverses after the moving component 5 moves forward once. At this time, the driving motor 2 drives the spray component 7 to reciprocate and spray.

[0042] The spraying shaft 6 rotates reciprocally under the drive of the drive shaft 3, thereby driving the sliding carriage 21 to move reciprocally. During the movement, the rotating spray pipe 23 is driven to move reciprocally, and the spraying disc 24 changes its position reciprocally for spraying. The hose 25 conducts the water inside the water tank 26 into the spraying disc 24. A water pump can be provided at the end of the hose 25 located in the water tank 26 to improve the spraying efficiency and uniformity. Spraying by relying on the self-weight of water will affect the spraying effect after the water level drops. Since a follower gear 30 is provided on the outer side of the rotating spray pipe 23, it will rotate during the cooperation with the transmission gear 29, thereby driving the spraying disc 24 to rotate, greatly improving the spraying uniformity. The follower gear 30 generally adopts a non-standard gear in order to cooperate with the wavy transmission gear 29, and the transmission gear 29 can also be set as required. Since the arrangement shape between the pipes is not strip-shaped but multiple circles arranged, the setting of the transmission gear 29 at the corresponding position can be changed according to the spraying effect, so that the spraying disc 24 does not rotate at this position to achieve a better spraying effect. When the contact switch 31 is triggered, the drive motor 2 reverses again, and the device moves forward to perform the maintenance of the next row of pipes. The maintenance process of the entire device is highly automated and has a better use effect.

[0043] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A constant humidity maintenance device for concrete pipes, comprising a door frame (1), a drive motor (2) fixedly connected to the side of the door frame (1), characterized in that: A driving shaft (3) is fixedly connected to the rotor of the driving motor (2), a one-way transmission mechanism (4) is fixedly connected to the middle of the driving shaft (3), a moving assembly (5) for driving the portal frame (1) to move is fixedly connected to the end of the driving shaft (3), a spray shaft (6) parallel to the driving shaft (3) is rotatably connected to the portal frame (1), the spray shaft (6) is in transmission connection with the driving shaft (3), and a movable spray assembly (7) is provided on the outside of the spray shaft (6).

2. The constant humidity curing device for concrete pipes according to claim 1, characterized in that: A plurality of moving wheels (8) are fixedly connected to the bottom of the portal frame (1).

3. The constant humidity curing device for concrete pipes according to claim 1, characterized in that: The outer side of the driving shaft (3) is fixedly connected to a driving gear (9), and the outer side of the spraying shaft (6) is fixedly connected to a driven gear (10), and the driving gear (9) and the driven gear (10) are meshed.

4. The constant humidity curing device for concrete pipes according to any one of claims 1 to 3, characterized in that: The one-way transmission mechanism (4) comprises a driving disc (11) and a clamping sleeve (12) respectively connected to both ends of the driving shaft (3); the driving disc (11) is connected to a clamping tooth (13) via a torsion spring; clamping grooves (14) are evenly distributed on the inner side of the clamping sleeve (12); the clamping teeth (13) cooperate with the clamping sleeve (12) for one-way transmission.

5. The constant humidity curing device for concrete pipes according to claim 4, characterized in that: The moving assembly (5) comprises a positioning shaft (15) rotatably connected to the portal frame (1), the positioning shaft (15) being transmission-connected to the driving shaft (3), a driving dial (16) being fixedly connected to the end of the positioning shaft (15), a wheel shaft (17) being rotatably connected to the portal frame (1), the wheel shaft (17) being located below the positioning shaft (15), a driven sheave (18) being fixedly connected to the outer side of the wheel shaft (17), the driving dial (16) being matched with the driven sheave (18), and a driving wheel (19) being fixedly connected to the outer end of the wheel shaft (17).

6. The constant humidity curing device for concrete pipes according to claim 5, characterized in that: A photoelectric switch bracket (20) is fixedly connected to the door frame (1), and a photoelectric switch is connected to the photoelectric switch bracket (20). The photoelectric switch transmits signals through the slot shielding on the driven groove wheel (18) and realizes the steering control of the drive motor (2).

7. The constant humidity curing device for concrete pipes according to claim 6, characterized in that: The spray shaft (6) is a threaded shaft. The outer side of the spray shaft (6) is threadedly connected to a sliding frame (21). The sliding frame (21) is slidably connected to the drive shaft (3). A positioning swing shaft (22) is rotatably connected to the sliding frame (21). The swing center of the positioning swing shaft (22) is parallel to the axis of the spray shaft (6). The spray assembly (7) comprises a rotating nozzle (23), a spray disc (24), a hose (25) and a water tank (26). The rotating nozzle (23) is rotatably connected to the positioning swing shaft (22). The spray disc (24) is fixedly connected to the bottom of the rotating nozzle (23). The top of the rotating nozzle (23) is connected to the water tank (26) through the hose (25). The water tank (26) is fixedly arranged on the top of the portal frame (1).

8. The constant humidity curing device for concrete pipes according to claim 7, characterized in that: The outer side of the rotating nozzle (23) is rotatably connected to a spring connecting tube (27), a tension spring (28) is fixedly connected to the spring connecting tube (27), the other end of the tension spring (28) is connected to the sliding frame (21), the rotating nozzle (23) is pressed against the door frame (1) under the action of the tension spring (28), the edge position where the door frame (1) and the rotating nozzle (23) abut against each other is wavy, and a transmission tooth (29) is fixedly connected to the abutting surface, the outer side of the rotating nozzle (23) is fixedly connected to a follower gear (30), and the follower gear (30) cooperates with the transmission tooth (29).

9. The constant humidity curing device for concrete pipes according to claim 8, characterized in that: A contact switch (31) is fixedly connected to the side of the sliding frame (21) away from the moving assembly (5), and the motor reverses when the contact switch (31) contacts and cooperates with the door frame (1).

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