A smart sandbox for bridge construction

Abstract

This invention belongs to the field of construction technology, and particularly relates to an intelligent sand box for bridge construction, including an outer cylinder and a support cylinder. The top of the support cylinder is provided with a support plate that fits against the beam body, and the bottom of the outer cylinder is provided with a sand discharge port. A rotating rod is rotatably connected to the bottom of the outer cylinder. The bottom of the outer cylinder is provided with a sand discharge channel that communicates with the sand discharge port. The bottom of the cavity is provided with a sand discharge port that communicates with the sand discharge channel at an inclined surface. The beam body is placed on several support plates. When the beam body needs to be assembled, a fixed support is placed under the beam body. At this time, the main control motor switch is turned on, so that the motor starts and controls the drive component, so that the sand is pushed outward and discharged. This causes the internal sand to flow away and the height to decrease, thereby lowering the support cylinder as well, and lowering the beam body to the required height. The support cylinder continues to lower, so that the beam body fits against the permanent fixed support, thereby achieving rapid disassembly.

Description

Technical Field

[0001] This invention discloses an intelligent sand box, and more particularly relates to an intelligent sand box for bridge construction. Background Technology

[0002] The purpose of sand boxes in the construction of cast-in-place beams using steel pipe pile supports for bridges is to temporarily support the beam by filling the sand box with sand to the required height. Once the beam is formed and installation is complete, the sand box is replaced with a permanent support. Existing technology not only uses sand boxes but also employs staggered jack support. After completion, the bottom is set as a permanent support, and then the jacks are lowered to bring the beam into contact with the support, which is then fixed in place, thus completing the installation.

[0003] However, jacks have limited stroke and require continuous lifting of the beam to remove or replace pads, resulting in long lowering times and low efficiency. This method is also highly dangerous, as manual operation is difficult to control precisely, leading to uneven beam descent, affecting beam quality and construction safety. Sand box replacement involves opening the bottom drain port to allow sand to drain, thus lowering the support height and lowering the sand box to lower the beam. However, the sand in the sand box easily becomes dense under pressure, causing blockage at the drain port. This prevents automatic drainage, requiring manual removal with tools, resulting in low beam lowering efficiency. Furthermore, the internal moisture can clump together when compacted, making drainage difficult. Therefore, sand drainage and replacement of permanent supports are inconvenient. This application proposes a new solution to facilitate sand drainage. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent sandbox for bridge construction in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent sand box for bridge construction, comprising an outer cylinder and a support cylinder. The top of the support cylinder is provided with a support plate that fits against the beam. The outer cylinder is filled with sand, and the bottom of the outer cylinder is provided with a sand discharge port. The outer cylinder has a cavity for placing sand, and the bottom of the cavity is inclined. A rotating rod is rotatably connected to the bottom of the outer cylinder. The bottom of the outer cylinder has a sand discharge channel communicating with the sand discharge port. The bottom of the cavity has a sand discharge port communicating with the sand discharge channel at an inclined surface. A pushing component for pushing sand into the sand discharge port is fitted against the inclined surface of the bottom of the cavity. A rotating sleeve is rotatably connected to the bottom of the outer cylinder at the cavity. The pushing component is engaged with the rotating sleeve. A spiral rod for pushing sand in the sand discharge channel to the sand discharge port is rotatably connected inside the sand discharge channel. The rotating rod is engaged with the rotating sleeve. A motor for driving the spiral rod and the rotating sleeve to rotate is provided at the bottom of the outer cylinder. A driving component for pushing sand apart and promoting sand flow is provided between the outer cylinder and the rotating rod.

[0006] Preferably, the motor shaft is engaged with the screw rod, a bevel gear is engaged with the screw rod, a bevel gear is provided at the bottom of the rotating sleeve and meshes with the bevel gear, the rotating rod passes through the rotating sleeve and is rotatably connected to the outer cylinder, and the rotating rod is provided with a release device to release the engagement with the rotating sleeve.

[0007] Preferably, the drive assembly includes a second pusher member disposed at the top of the rotating rod, the inner ring of the second pusher member being rotatably connected to a sleeve, the outer ring of the rotating rod being provided with a thread that engages with the sleeve and pushes the sleeve downward, the rotating sleeve being provided with an insert for limiting the rotation of the sleeve and penetrating the sleeve, and the center of the support cylinder being provided with a groove for accommodating the rotating rod and the insert being embedded.

[0008] Preferably, the outer ring of the second pusher is provided with a protrusion embedded in the inner wall of the cavity, and the inner wall of the cavity is provided with an arc-shaped groove for guiding the movement of the protrusion and driving the second pusher to rotate.

[0009] Preferably, the release device includes a sleeve that is slidably connected to the bottom of the rotating rod, and the sleeve is pushed down by the ferrule after it is moved down. The sleeve is engaged with the rotating sleeve, and the rotating sleeve has a second groove for accommodating the sleeve. A spring is provided between the second groove and the sleeve, and the rotating rod is not threaded below the sleeve contact point. The bottom of the ferrule has an abutment part for embedding the rotating sleeve.

[0010] Preferably, a ratchet is rotatably connected inside the rotating sleeve, and a pawl that meshes with the ratchet is provided inside the rotating sleeve. The ratchet is provided with a push block that abuts against the abutting part and pushes the abutting part upward. The abutting surface between the push block and the abutting part is an arc surface.

[0011] Preferably, the bottom of the outer cylinder is provided with a support part, and a pressure sensor is provided between the support part and the outer cylinder. The support part is provided with a receiving part that communicates with the sand discharge port and is used to receive the discharged sand. The pressure sensor signal is output to the control terminal, and the motor is controlled by one key through the control terminal.

[0012] Preferably, the receiving component is slidably connected to the support component. The bottom of the receiving component is provided with a pulley that fits against the support component. Several receiving plates are arranged in a ring inside the receiving component. Springs are provided between the several receiving plates and the receiving component. A pin is provided on the receiving plate that extends out of the receiving component. Springs are sleeved on the outside of the pin. The support component is provided with a groove to accommodate the pin. A fixing block is fixedly connected in the groove to abut against the pin and push the pin to move. The abutment surface between the fixing block and the pin is inclined.

[0013] Preferably, the outer cylinder is rotatably connected to a baffle outside the sand discharge port, a torsion spring is provided between the baffle and the outer cylinder, an annular part is provided on the support part, a limiting block is provided on the annular part to prevent the receiving part from moving upward and separating from the support part, an annular groove is opened on the side of the receiving part to accommodate the insertion of the limiting block, and the limiting block is threadedly connected to the annular part.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Using this device, sand is filled into the outer cylinder according to the required height of the support cylinder. During filling, the second pusher is adjusted to the height the sand needs to reach, then stopped. Sand is then filled to this height, compacted, and placed into the support cylinder. The beam is then placed on several support plates. When the beam needs to be assembled, a fixed support is placed under the beam. The control unit is then activated to start the motor, driving the components and pushing the sand outwards. This causes the internal sand to flow away and the height to decrease, lowering the support cylinder and the beam to the required height. The support cylinder continues to lower until the beam is in contact with the permanent fixed support, allowing for quick disassembly. This design facilitates sand discharge and prevents internal blockage. The rotation of the first and second pushers loosens the sand, allowing it to flow out through the bottom discharge hole. Furthermore, the screw rod pushes the sand out of the outer cylinder, reducing the weight inside. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an intelligent sandbox used in bridge construction;

[0017] Figure 2 A schematic diagram of the internal structure of an intelligent sandbox used in bridge construction.

[0018] Figure 3 A schematic diagram of the outer cylinder of an intelligent sand box used in bridge construction;

[0019] Figure 4 This is a partial structural diagram of the outer cylinder of an intelligent sand box used in bridge construction.

[0020] Figure 5 A structural diagram of the disconnector and driver components;

[0021] Figure 6 A schematic diagram of the exploded structure of the component and the drive component;

[0022] Figure 7 for Figure 3 A magnified view of a portion at point A;

[0023] Figure 8This is a schematic diagram of the internal structure of the support and receiving parts.

[0024] Reference numerals: 1. Outer cylinder; 2. Support cylinder; 3. Sand discharge port; 4. Cavity; 5. Rotating rod; 6. Sand discharge channel; 7. Sand discharge hole; 8. Pushing component one; 9. Rotating sleeve; 10. Helical rod; 11. Motor; 12. Bevel gear one; 13. Bevel gear two; 14. Pushing component two; 15. Sleeve; 16. Insert; 17. Protrusion; 18. Groove one; 19. Arc groove; 20. Sleeve; 21. 21. Groove II; 22. Spring I; 23. Abutment part; 24. Ratchet; 25. Pad; 26. Push block; 27. Support part; 28. Receiving part; 29. ​​Pulley; 30. Receiving plate; 31. Spring II; 32. Pin; 33. Slide groove; 34. Fixing block; 35. Baffle; 36. Ring part; 37. Limiting block; 38. Annular groove; 39. Torsion spring; 40. Partition I; 41. Partition II. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] A smart sandbox for bridge construction, such as Figures 1-8As shown, the device includes an outer cylinder 1 and a support cylinder 2. Using this device, the base height is first determined based on the height of the outer cylinder 1, support cylinder 2, and the internal foundation sand. Then, the final required support height is added. Sand is poured into the cavity 4 of the outer cylinder 1, and the required support height is adjusted accordingly. Finally, the support cylinder 2 is embedded into the cavity 4 of the outer cylinder 1, and the beam to be formed is placed on the support plate. After forming, the beam needs to be lowered and connected to a fixed permanent support. The sand outlet of the outer cylinder 1 needs to be removed to lower the sand height, thus lowering the support cylinder 2. Once the beam height is lowered to fit against the permanent support, and the support plate is lower than the support height, the support cylinder 2 and outer cylinder 1 can be removed. However, due to the compaction and gravity of the sand support, the internal sand is tightly packed and cannot be removed. Furthermore, the multiple support cylinders 2 and outer cylinder 1 require multiple workers to operate simultaneously, which is inconvenient and makes it impossible to control the discharge volume simultaneously, potentially leading to deviations and potential dangers. The support cylinder 2 has a support plate at the top that fits against the beam. The outer cylinder 1 is filled with sand, and the bottom of the outer cylinder 1 has a sand discharge port 3. The outer cylinder 1 has a cavity 4 for placing sand, and the bottom of the cavity 4 is inclined. A rotating rod 5 is rotatably connected to the bottom of the outer cylinder 1. The bottom of the outer cylinder 1 has a sand discharge channel 6 that communicates with the sand discharge hole 7. The bottom of the cavity 4 has a sand discharge hole 7 that communicates with the sand discharge channel 6. A pushing component 8 for pushing sand into the sand discharge hole 7 is fitted against the inclined bottom of the cavity 4. A rotating sleeve 9 is rotatably connected to the bottom of the outer cylinder 1 at the cavity 4. The pushing component 8 is engaged with the rotating sleeve 9. A spiral rod 10 for pushing the sand in the sand discharge channel 6 to the sand discharge port 3 is rotatably connected inside the sand discharge channel 6. The rotating rod 5 is engaged with the rotating sleeve 9. A motor 11 for driving the spiral rod 10 and the rotating sleeve 9 is provided at the bottom of the outer cylinder 1. A space is provided between the outer cylinder 1 and the rotating rod 5 for pushing the sand apart and pushing the sand. The device of this application uses a flowing drive assembly. By setting the foundation height in advance and filling it with sand, when sand needs to be discharged and disassembled, all the motors 11 in the outer cylinder 1 and the support cylinder 2 are connected to the controller and signal receiver. Thus, the controller at the control center can start all motors 11 with one button. Then, the motors 11 start the control screw rod 10 and the rotating sleeve 9 to rotate synchronously. When the rotating sleeve 9 rotates, it will drive the locking pusher 8 to rotate, so that the pusher 8 pushes the sand at the bottom into the sand discharge hole 7, and then through the sand discharge hole 7 into the sand discharge channel 6. The screw rod 10 pushes the sand out to the sand discharge port 3 and discharges it to the outside of the outer cylinder 1. Thus, the internal sand discharge is automatic and no manual sand removal is required. Secondly, when the rotating sleeve 9 rotates, it will drive the rotating rod 5 to rotate synchronously, thereby opening the drive assembly, which will disperse the sand in the middle of the top and push it down.

[0027] The rotating shaft of motor 11 is engaged with the screw rod 10. A bevel gear 12 is engaged with the screw rod 10. A bevel gear 13 meshes with the bevel gear 12 at the bottom of the rotating sleeve 9. The rotating rod 5 passes through the rotating sleeve 9 and is rotatably connected to the outer cylinder 1. The rotating rod 5 is equipped with a release device to release the engagement with the rotating sleeve 9. When motor 11 is turned on, it drives the engaged screw rod 10 to rotate, and at the same time drives the bevel gear 12 on the screw rod 10 to rotate synchronously. The bevel gear 12 also drives the meshing bevel gear 13 to rotate synchronously. This drives the bevel gear 13 to drive the rotating sleeve 9 to rotate synchronously, driving the pusher 8 to move along the bottom of the cavity 4 and push the sand into the sand discharge hole 7. Secondly, the bottom of the cavity 4 is inclined, which can ensure that when the sand in the sand discharge channel 6 is pushed to flow, the sand at the bottom of the cavity 4 can automatically fall down the slope. Furthermore, when the rotating sleeve 9 rotates, it will also drive the rotating rod 5 to rotate synchronously through the engagement structure, so that the sand at the top driven by the rotating rod 5 can easily slide down.

[0028] The driving assembly includes a second pusher 14 located at the top of the rotating rod 5. A retaining sleeve 15 is rotatably connected to the inner ring of the second pusher 14. The outer ring of the rotating rod 5 has threads that engage with the retaining sleeve 15 and push it downwards. The rotating sleeve 9 has an insert 16 that restricts the rotation of the retaining sleeve 15 and passes through it. The center of the support cylinder 2 has a groove 18 for accommodating the rotating rod 5 and the insert 16. When the rotating rod 5 rotates, the external threads on its surface engage with the threads of the retaining sleeve 15 on the inner ring of the second pusher 14. Thus, the rotating rod 5 drives the retaining sleeve 15 to rotate, while the retaining sleeve 15 is restricted from rotating by the insert 16 on the rotating sleeve 9. The rotating rod 5 remains rotating, thus pushing the retaining sleeve 15 downwards through the meshing threads, causing it to lock. The sleeve 15 moves without rotating, thus the sleeve 15 moves down, which pulls the pusher 14 down synchronously. When the pusher 14 moves down, it pushes the sand it comes into contact with, making the sand flow easily and less likely to cause blockage. If it encounters sticky sand along the way, it will squeeze it and loosen the clumps of sand. After the sand is discharged and the height is reduced, the support cylinder 2 also descends. The groove of the support cylinder 2 accommodates the insertion plug 16 and the rotating rod 5, thus avoiding obstruction and preventing it from moving down. The insertion plug 16 and the rotating sleeve 9 have a partition 40 at the contact point to prevent sand from entering. The rotating sleeve 9 has an annular groove to accommodate the movement of the insertion plug 16 when it rotates. The partition 40 can block the sand from entering the groove and preventing the insertion plug 16 from moving. The outer ring of the second pusher 14 is provided with a protrusion 17 embedded in the inner wall of the cavity 4. The inner wall of the cavity 4 is provided with an arc-shaped groove 19 for guiding the movement of the protrusion 17 and driving the second pusher 14 to rotate. When the sleeve 15 moves down, it will simultaneously pull the second pusher 14 down. However, the protrusion 17 on the outer edge of the second pusher 14 is also pulled down simultaneously. At the same time, the protrusion 17 is located in the arc-shaped groove 19. Under the obstruction of the inner wall of the arc-shaped groove 19, the protrusion 17 moves along the inner wall of the arc-shaped groove 19. Under the pulling of the sleeve 15 and the force of the inner wall of the arc-shaped groove 19, the second pusher 14 moves down and rotates along the sleeve 15. This stirs the sand in the cavity 4, ensuring that the second pusher 14 can rotate along the sleeve 15 during the downward movement and is driven down by the sleeve 15. This breaks up the sand that comes into contact with it in the movement path and prevents the sand that is stuck together from moving to the sand discharge port 3 and blocking the sand discharge port 3. With this setup, by rotating the sleeve 9 and rotating the rod 5, the first pusher 8 and the second pusher 14 can agitate the sand in the cavity 4 and push the sand into the discharge port 3, where it is pushed out by the spiral rod 10, achieving the effect of automatic sand discharge. At the same time, it can also prevent the sand from clumping and becoming blocked due to gravity compaction.

[0029] The release device includes a sleeve 20 that slides vertically and vertically at the bottom of the rotating rod 5. The sleeve 20 is pushed downwards by the lowered clamping sleeve 15, engaging with the rotating sleeve 9. The rotating sleeve 9 has a second groove 21 to accommodate the sleeve 20. A spring 22 is provided between the groove 21 and the sleeve 20. The rotating rod 5 has no threads below the point where the sleeve 20 engages. The bottom of the clamping sleeve 15 has an abutment portion 23 that engages with the rotating sleeve 9. When the clamping sleeve 15 moves to near the bottom of the rotating rod 5, the threads of the clamping sleeve 15 and the rotating rod 5 separate, pushing the sleeve 20, which is slidably connected to the rotating rod 5, downwards. This causes the sleeve 20 to engage with the rotating sleeve 9, changing the connection from sliding to rotational, thus removing the restriction on the rotating rod 5. When the rotating rod engages with the sleeve 20... Five sections are unthreaded, thus freeing them from thread constraints and allowing the ferrule 15 to move linearly downwards. Its own weight presses down on the sleeve 20, compressing the spring 22 and severing the connection between the rotating rod 5 and the rotating sleeve 9. This prevents both the rotating rod 5 and the second pusher 14 from rotating further. Simultaneously, the external thread of the rotating rod 5 remains aligned with the internal thread of the ferrule 15, and the second pusher 14 moves to the end of the arc-shaped groove 19, which is vertical. This restricts the second pusher 14 from further rotation. In this state, the rotating sleeve 9 continues to rotate, and the first pusher 8 rotates, pushing the sand to the second pusher 14. The thrust of the first pusher 8 and the blocking force of the second pusher 14 create a clamping effect, breaking up any clumps of sand. This design enhances the pushing of the internal sand, ensuring its flow during internal sand discharge.

[0030] A ratchet 24 is rotatably connected inside the rotating sleeve 9. A pawl 25 engages with the ratchet 24 inside the rotating sleeve 9. A push block 26 abuts against and pushes the abutting part 23 upwards on the ratchet 24. The contact surface between the push block 26 and the abutting part 23 is an arc surface. After the retaining sleeve 15 disengages from the threaded constraint of the rotating rod 5, when the pusher 14 is inserted into the vertical position of the arc-shaped groove 19, the pusher 14 enters the vertical position of the arc-shaped groove 19. At this time, the abutting part 23 at the bottom of the pusher 14 abuts against the push of the ratchet 24. Because the arc surface of the pawl 25 of the rotating sleeve 9 moves along the arc surface of the ratchet 24 teeth, it is in a state of idle rotation and will not drive the ratchet 24. The pusher 1 8 and pusher 2 14 are staggered vertically to avoid blocking the pusher 1 8 and causing it to be unable to move. The rotating sleeve 9 is located on the upper surface of the pawl 25 and is equipped with a partition 2 41 with a closed ratchet 24 and pawl 25. This is used to close and prevent sand from entering and causing jamming. The ratchet 24 is located at the insertion point of the push block 26 and is slidably connected with several partitions 3. The partitions 2 41 are arranged in a circle, and the number of partitions 3 is the same as the number of push blocks 26. Thus, when the abutment 23 moves down and inserts into the ratchet 24, it first abuts against the partitions 3, pushes the partitions 3 backward, and compresses the internal spring, thereby opening the push block 26. This setting ensures that sand cannot enter.

[0031] The bottom of the outer cylinder 1 is provided with a support part 27, and a pressure sensor is provided between the support part 27 and the outer cylinder 1. The support part 27 is provided with a receiving part 28 that communicates with the sand discharge port 3 and is used to receive the discharged sand. The pressure sensor signal is output to the control terminal. The motor 11 is controlled by one key through the control terminal. After the sand inside the outer cylinder 1 is pushed into the sand discharge hole 7 by the first pusher 8 and the second pusher 14, it is discharged out of the sand discharge port 3 by the screw rod 10 along the sand discharge channel 6 and falls directly into the receiving part 28, which reduces the weight of the outer cylinder 1. The weight of the sand that falls directly is applied to the support. On part 27, the pressure sensor can directly detect the decrease in weight of the outer cylinder 1 and output a signal to the control center, allowing the control center to directly observe the weight reduction. Simultaneously, it connects to the motors 11 installed on several outer cylinders 1, enabling one-button control without the need for multiple manual operations, ensuring synchronized start-up and reducing safety hazards. Furthermore, by observing the weight, it ensures consistent output and smooth, synchronized descent, preventing excessive deviations that could lead to installation misalignment. If there is a weight deviation, the control center will display it, allowing for adjustment and increasing the output power of the motors 11. This can be achieved using existing technology via PLC control and will not be discussed further here.

[0032] The receiving part 28 is slidably connected to the support part 27. The bottom of the receiving part 28 is provided with a pulley 29 that fits against the support part 27. Several receiving plates 30 are arranged in a ring inside the receiving part 28. A second spring 31 is provided between the receiving plates 30 and the receiving part 28. A pin 32 protrudes from the receiving part 28 on each receiving plate 30, and the second spring 31 is sleeved on the pin 32. The support part 27 is provided with a groove 33 to accommodate the pin 32. A device that abuts against and pushes against the pin 32 is fixedly connected within the groove 33. The fixed block 34 moves along the movable pin 32. The contact surface between the fixed block 34 and the pin 32 is inclined. The outer cylinder 1 is rotatably connected to the sand discharge port 3 by a baffle 35. A torsion spring 39 is provided between the baffle 35 and the outer cylinder 1. When sand is not being discharged, the torsion spring 39 automatically resets the cylinder to achieve a seal. Due to the obstruction of the spiral rod 10, sand is prevented from overflowing excessively. The baffle 35 is sufficient to achieve a sealing effect. During sand discharge, the pushing pressure causes the sand to accumulate at the sand discharge port 3. The baffle 35, propelled by the gravity of the sand, rotates, compressing the torsion spring 39 and opening the sand discharge port 3 to release sand. Sand can then enter the receiving plate 30 and accumulate there due to gravity. This causes the receiving plate 30 to compress the bottom spring 31, simultaneously pulling the pin 32 downwards. The pin 32 passes through the receiving member 28 and embeds into the groove 33 of the bottom support part 27. The groove 33 is circular, ensuring that the pin 32 moves downwards and abuts against the fixing block 34. As the fixed block 34 moves downwards along its inclined surface, the receiving part 28 can move, even though the fixed block 34 cannot move. Under the action of gravity and the push of the inclined surface of the fixed block 34, the receiving part 28 rotates. The bottom rollers reduce the force of movement, thus ensuring that the position can be changed after a lot of sand is discharged, avoiding excessive sand accumulation in one place and scattering everywhere. With this setting, the receiving part 28 can automatically rotate and switch according to the sand received by the receiving plate 30, increasing the amount of sand received. The support part 27 is provided with an annular part 36, and the annular part 36 is provided with a limiting block 37 for preventing the receiving part 28 from moving upward and separating from the support part 27. The receiving part 28 has an annular groove 38 on its side to accommodate the insertion of the limiting block 37, and the limiting block 37 is threadedly connected to the annular part 36. The limiting block 37 is inserted into the annular part 36 and passes through the annular part 36 and enters the annular groove 38 of the receiving part 28. This can restrict the vertical movement of the receiving part 28. Under this restriction, it can be ensured that when the pin 32 moves downward, gravity will not cause the entire receiving part 28 to be lifted due to the blocking force of the fixing block 34. This ensures that the receiving part 28 cannot move up and down, and the fixing block 34 cannot rotate. The interaction ensures that the receiving part 28 can rotate.

[0033] With the above settings, after installation and when the beam needs to be lowered for shaping, manual disassembly is unnecessary. All motors 11 can be activated with a single button press at the control center to discharge sand. Real-time monitoring is performed based on the weight of the discharged sand, and the discharge rate can be stopped immediately if it exceeds the limit, achieving precise control, ensuring uniform discharge, and eliminating the need for manual operation. This ensures a smooth and unbiased descent, with timely adjustments made if any deviation occurs. Internal pushing also automatically discharges sand, preventing clumping and blockages. Conversely, after sand discharge and disassembly, for reuse, the limiting block 37 can be rotated along the annular part 36 and pulled out, disengaging from the annular part 36 and annular groove 38. This removes the obstruction to the receiving part 28, allowing the receiving part 28 to be pushed upwards to the top of the outer cylinder 1, sweeping the sand back into the cavity 4 of the outer cylinder 1 for reuse. After the sand is poured in, the drive motor 11 is reversed first. The motor 11 operates in both forward and reverse directions. This causes the motor 11 to reverse, which in turn reverses the bevel gear 12 and drives the bevel gear 13 to reverse as well. This causes the pawl 25 to engage the ratchet 24, which rotates. When the ratchet 24 rotates, the push block 26 contacts the abutment part 23 and pushes the abutment part 23 upward along the arc surface of the abutment. This allows the ferrule 15 to rise, releasing the pressure on the sleeve 20. The ferrule 15 then re-engages with the thread of the rotating rod 5. As the ferrule 15 moves upward, the sleeve 20 is pushed back to its original position by the spring 22, allowing the rotating rod 5 to reconnect with the rotating sleeve 9. During the separation and reconnection, the spring 22 pushes the sleeve 20. If the groove of the sleeve 20 and the protruding block of the rotating rod 5 are misaligned, a strong magnet will magnetically attract the sleeve 20 to align it. Furthermore, before setting the motor 11, it can be pre-set that each drive movement is a full revolution to ensure that the motor 11 stops after a full revolution. The rotation stops only after the circle has finished rotating, thus ensuring that the sleeve 20 and the rotating sleeve 9 are reset. This allows the sleeve 20 to remain in a relatively lockable position with the rotating rod 5 and the rotating sleeve 9, ensuring accurate reset when reconnection is required after the rotating rod 5 and the rotating sleeve 9 have separated. After reversing, the clamping sleeve 15 is moved upward, and the second pusher 14 is moved upward synchronously. This setting ensures automatic reset and subsequent use. At the same time, the rotating sleeve 9 and the rotating rod 5 can be disconnected to ensure that after the second pusher 14 is driven down to the bottom, it will not obstruct the rotation of the first pusher 8 due to the continuous downward movement and rotation of the thread. Secondly, it also avoids the downward movement being too fast and stopping, which would cause the first pusher 8 to stop before the sand is discharged and thus be unable to continue rotating. Furthermore, by switching off, it is ensured that after the first pusher 8 continues to rotate, it can form a clamping state with the second pusher 14 to crush the clumps of sand near the sand discharge hole 7.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. An intelligent sand box for bridge construction, comprising an outer cylinder (1) and a support cylinder (2), wherein the top of the support cylinder (2) is provided with a support plate that fits against the beam body, the outer cylinder (1) is filled with sand, the bottom of the outer cylinder (1) is provided with a sand discharge port (3), and the outer cylinder (1) is provided with a cavity (4) for placing sand, characterized in that: The bottom of the cavity (4) is inclined. A rotating rod (5) is rotatably connected to the bottom of the outer cylinder (1). The outer cylinder (1) has a sand discharge channel (6) at the bottom that communicates with the sand discharge port (3). The bottom of the cavity (4) has a sand discharge hole (7) at the inclined surface that communicates with the sand discharge channel (6). A pushing component (8) for pushing sand into the sand discharge hole (7) is fitted to the inclined surface of the bottom of the cavity (4). A rotating sleeve is rotatably connected to the bottom of the outer cylinder (1) at the bottom of the cavity (4). (9) The pusher (8) is engaged with the rotating sleeve (9). The sand discharge channel (6) is rotatably connected to a screw rod (10) for pushing the sand in the sand discharge channel (6) to the sand discharge port (3). The rotating rod (5) is engaged with the rotating sleeve (9). The bottom of the outer cylinder (1) is provided with a motor (11) for driving the screw rod (10) and the rotating sleeve (9) to rotate. A drive assembly for pushing the sand to separate and pushing the sand to flow is provided between the outer cylinder (1) and the rotating rod (5).

2. The intelligent sand box for bridge construction according to claim 1, characterized in that: The rotating shaft of the motor (11) is engaged with the screw rod (10), and a bevel gear (12) is engaged on the screw rod (10). The bottom of the rotating sleeve (9) is provided with a bevel gear (13) that meshes with the bevel gear (12). The rotating rod (5) passes through the rotating sleeve (9) and is rotatably connected to the outer cylinder (1). The rotating rod (5) is provided with a release device to release the engagement with the rotating sleeve (9).

3. The intelligent sand box for bridge construction according to claim 2, characterized in that: The drive assembly includes a second pusher (14) provided on the top of the rotating rod (5), the inner ring of the second pusher (14) is rotatably connected to a sleeve (15), the outer ring of the rotating rod (5) is provided with a thread that engages with the sleeve (15) and pushes the sleeve (15) downward, the rotating sleeve (9) is provided with a plug (16) for restricting the rotation of the sleeve (15) and penetrating the sleeve (15), and the center of the support cylinder (2) is provided with a groove (18) for accommodating the rotating rod (5) and the insertion (16) being embedded.

4. The intelligent sand box for bridge construction according to claim 3, characterized in that: The outer ring of the pusher (14) is provided with a protrusion (17) embedded in the inner wall of the cavity (4), and the inner wall of the cavity (4) is provided with an arc groove (19) for guiding the protrusion (17) to move and driving the pusher (14) to rotate.

5. The intelligent sand box for bridge construction according to claim 3, characterized in that: The release device includes a sleeve (20) that is slidably connected to the bottom of the rotating rod (5), and the sleeve (20) is pushed down by the lowered clamp (15). The sleeve (20) is engaged with the rotating sleeve (9), and the rotating sleeve (9) has a second groove (21) for accommodating the sleeve (20). A spring (22) is provided between the second groove (21) and the sleeve (20). The rotating rod (5) is not threaded below the sleeve (20) where it is in contact. The bottom of the clamp (15) has an abutment part (23) for embedding the rotating sleeve (9).

6. The intelligent sand box for bridge construction according to claim 5, characterized in that: A ratchet (24) is rotatably connected inside the rotating sleeve (9). A pawl (25) that meshes with the ratchet (24) is provided inside the rotating sleeve (9). A push block (26) is provided on the ratchet (24) that abuts against the abutting part (23) and pushes the abutting part (23) upward. The abutting surfaces of the push block (26) and the abutting part (23) are arc surfaces.

7. The intelligent sand box for bridge construction according to claim 1, characterized in that: The bottom of the outer cylinder (1) is provided with a support part (27), and a pressure sensor is provided between the support part (27) and the outer cylinder (1). The support part (27) is provided with a receiving part (28) that is connected to the sand discharge port (3) and is used to receive the discharged sand. The pressure sensor signal is output to the control terminal, and the motor (11) is controlled by one key through the control terminal.

8. The intelligent sand box for bridge construction according to claim 7, characterized in that: The receiving part (28) is slidably connected to the support part (27). The bottom of the receiving part (28) is provided with a pulley (29) that fits against the support part (27). The receiving part (28) is provided with a plurality of receiving plates (30) in a ring. A spring (31) is provided between the plurality of receiving plates (30) and the receiving part (28). A pin (32) is provided on the receiving plate (30) that protrudes out of the receiving part (28). The spring (31) is sleeved on the pin (32). The support part (27) is provided with a groove (33) that accommodates the pin (32). A fixing block (34) is fixedly connected in the groove (33) that abuts against the pin (32) and pushes the pin (32) to move. The contact surface between the fixing block (34) and the pin (32) is inclined.

9. The intelligent sand box for bridge construction according to claim 8, characterized in that: The outer cylinder (1) is rotatably connected to the sand discharge port (3) with a baffle (35). A torsion spring (39) is provided between the baffle (35) and the outer cylinder (1). An annular part (36) is provided on the support part (27). A limiting block (37) is provided on the annular part (36) to prevent the receiving part (28) from moving upward and separating from the support part (27). An annular groove (38) for accommodating the embedding of the limiting block (37) is opened on the side of the receiving part (28), and the limiting block (37) is threadedly connected to the annular part (36).

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