Construction devices and methods for preventing cracks in ultra-high concrete bridge towers

Abstract

This invention discloses a construction device and method for preventing cracks in ultra-high concrete bridge towers, relating to the field of concrete crack prevention technology. The construction device for preventing cracks in ultra-high concrete bridge towers includes a grout pump and a fixing plate. A transport pipe is fixedly connected to the top of the grout pump, and a handle is fixedly connected to the top of the fixing plate. A metering mechanism is movably connected to the bottom of the handle, and a leveling mechanism is fixedly connected to the bottom of the metering mechanism. In this construction device and method for preventing cracks in ultra-high concrete bridge towers, the grout pump delivers filling grout into the crack through a rotating pipe. Simultaneously, a rubber airbag seals the concrete surrounding the crack. After the crack is filled with filling grout, the rotating pipe is pushed upwards, causing the blocking plate to stop the output of filling grout. This ensures that filling grout is stopped immediately after the crack is filled, preventing overflow and saving time spent on processing excess filling grout.

Description

Technical Field

[0001] This invention relates to the field of concrete crack prevention technology, specifically to a construction device and method for preventing cracks in ultra-high concrete bridge towers. Background Technology

[0002] Crack prevention in concrete bridge towers is crucial, as it effectively ensures the overall safety and stability of the bridge structure, prevents cracks from weakening the load-bearing capacity and causing safety accidents, significantly extends the service life of bridge towers, reduces the intrusion of moisture and corrosive substances into the reinforcing steel, thereby improving structural durability and helping to significantly reduce the maintenance costs of the bridge throughout its entire life cycle.

[0003] The patent application number 202222705608.7 in China discloses an automatic filling device for cracks in the concrete raft slab of a mobile high-rise building, which includes a base and an automatic filling structure installed on the top of the base. The automatic filling structure includes: a support frame, a fixing frame, a pattern acquisition component, a feeding hopper, a tank, a hydraulic push rod, a moving plug, an assembly frame, an electric push rod, and a rotating extrusion head.

[0004] When filling grout is injected into the crack, in order to ensure that the grout is fully injected into the crack, the injected grout will usually overflow from the crack. Due to the capillary effect formed by the overflowing grout and the substrate, water can easily seep in along the interface, which will increase the rate of steel corrosion. The overflowing grout needs to be treated. When there are multiple cracks that need to be treated, it will seriously affect the filling speed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a construction device and method for preventing cracks in ultra-high concrete bridge towers, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a construction device for preventing cracks in ultra-high concrete bridge towers, comprising a grout pump and a fixing plate, wherein a transport pipe is fixedly connected to the top of the grout pump, a handle is fixedly connected to the top of the fixing plate, a metering mechanism is movably connected to the bottom of the handle, and a leveling mechanism is fixedly connected to the bottom of the metering mechanism.

[0007] Quantitative mechanisms include:

[0008] A blocking sleeve is fixedly connected to the end of the transport pipe away from the slurry pump.

[0009] A rotating tube, wherein the rotating tube is disposed at the bottom of the blocking sleeve;

[0010] A movable tube, which is movably connected to the bottom of a rotating tube.

[0011] Preferably, a fixing sleeve is movably connected to the top of the fixing plate, a fixing platform is fixedly connected to the bottom of the fixing sleeve, a connecting pipe is fixedly connected inside the fixing sleeve, the connecting pipe is fixedly connected to the bottom of the blocking sleeve, the outer wall of the rotating pipe is movably connected to the connecting pipe through a bearing, and a contact platform is fixedly connected to the bottom of the fixing platform.

[0012] Preferably, a blocking plate is movably connected inside the blocking sleeve, a second connecting rod is fixedly connected to the right side of the blocking plate, a first spring is fixedly connected to the right side of the second connecting rod, the first spring is fixedly connected to the top of the fixed platform, a first connecting rod is fixedly connected to the left side of the blocking sleeve, a standby magnet is fixedly connected to the left side of the first connecting rod, a trigger rod is fixedly connected to the outer wall of the moving tube, and a trigger magnet is fixedly connected to the top of the trigger rod at the corresponding position of the standby magnet.

[0013] Preferably, the leveling mechanism includes a rubber airbag, which is fixedly connected to the bottom of the contact platform, and three support blocks are fixedly connected to the bottom of the contact platform inside the rubber airbag.

[0014] Preferably, a drive motor is fixedly connected to the bottom of the fixed platform, a transmission belt is movably connected to the top of the drive motor, the transmission belt is movably connected to the outer wall of the rotating tube, and an eccentric block is fixedly connected to the outer wall of the rotating tube.

[0015] Preferably, a spiral plate is fixedly connected inside the moving tube, and a second spring is fixedly connected to the top of the moving tube. The top of the second spring is movably connected to the outer wall of the rotating tube through a bearing.

[0016] Preferably, a connecting sleeve is fixedly connected to the inner wall of the rotating tube, and an insertion block is fixedly connected to the inner wall of the moving tube at the corresponding position of the connecting sleeve.

[0017] Construction method of construction device for preventing cracks in ultra-high concrete bridge towers:

[0018] S1. Use a soft cleaning brush to reach into the gaps of the bridge tower and brush, then use a vacuum cleaner to suck out the dust from the gaps;

[0019] S2. After cleaning the inside of the gap, prepare the filling grout.

[0020] S3. Place the feeding structure of the grout pump into the prepared filling grout. The operator holds the handle, inserts the moving pipe into the gap, and pushes the handle towards the bridge tower until the support block is pressed against the concrete by the rubber airbag. Start the grout pump to transport the filling grout and fill it into the crack. When the grout pump stops working, the operator pulls the handle outward to remove the device.

[0021] S4. Inspect the filled gaps.

[0022] This invention provides a construction device and method for preventing cracks in ultra-high concrete bridge towers. It has the following beneficial effects:

[0023] 1. The construction device and method for preventing cracks in ultra-high concrete bridge towers involves using a grout pump to deliver filling grout into the cracks through a rotating pipe. Simultaneously, rubber airbags seal the concrete around the cracks. After the filling grout fills the cracks, the rotating pipe is pushed upwards, causing a blocking plate to stop the output of the filling grout. This ensures that the filling grout is stopped immediately after the cracks are filled, preventing the filling grout from overflowing and saving time spent on processing excess filling grout, thus increasing the filling speed.

[0024] 2. The construction device and method for preventing cracks in ultra-high concrete bridge towers: When injecting filling grout, the eccentric block causes the rotating pipe to rotate in a shaking manner, so that the filling grout is filled into the crack in a shaking state. Since the filling grout is relatively viscous, it can also pull the filling grout inside the crack, which can enhance the fluidity of the filling grout inside the crack, promote the filling grout to quickly fill the crack, and thus improve the filling speed.

[0025] 3. The construction device and method for preventing cracks in ultra-high concrete bridge towers utilizes a second spring to push the upward-moving tube downwards, thereby increasing the pressure of the filling grout inside the crack and promoting its spread and filling within the crack. This further enhances the filling speed of the grout within the crack, thus increasing the filling rate.

[0026] 4. The construction device and method for preventing cracks in ultra-high concrete bridge towers uses a rotating pipe to synchronously drive a moving pipe. The rotating spiral plate pushes the filling grout into the moving pipe, thereby cutting off the filling grout inside the rotating pipe and the crack. At the same time, the shaking of the moving pipe can make the filling grout flat on the crack, so that a flat surface is left after the equipment completes the filling, saving time on the filling surface treatment and thus increasing the filling speed. Attached Figure Description

[0027] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0028] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0029] Figure 3 for Figure 2 Enlarged structural diagram of section F in the middle;

[0030] Figure 4 This is a schematic diagram of the rubber airbag structure of the present invention;

[0031] Figure 5 This is a schematic cross-sectional view of the movable tube structure of the present invention;

[0032] Figure 6 for Figure 5 Enlarged structural diagram of section A in the middle;

[0033] Figure 7 for Figure 4 Enlarged structural diagram of section D in the middle;

[0034] Figure 8 for Figure 5 Enlarged structural diagram of section C;

[0035] Figure 9 for Figure 5 Enlarged structural diagram of section B;

[0036] Figure 10 for Figure 4 Enlarged structural diagram of section E in the middle;

[0037] Figure 11 for Figure 4 Schematic diagram of cross-section structure;

[0038] Figure 12 This is a schematic diagram of the insertion block structure of the present invention;

[0039] Figure 13 This is a schematic diagram of the drive motor structure of the present invention.

[0040] In the diagram: 1. Slurry pump; 2. Transport pipe; 3. Fixed plate; 4. Metering mechanism; 401. Fixed sleeve; 402. Connecting pipe; 403. Trigger magnet; 404. Blocking sleeve; 405. Blocking plate; 406. First connecting rod; 407. Second connecting rod; 408. First spring; 409. Standby magnet; 410. Rotating pipe; 411. Fixed platform; 412. Contact platform; 413. Moving pipe; 414. Trigger rod; 5. Leveling mechanism; 501. Rubber airbag; 502. Support block; 503. Drive motor; 504. Transmission belt; 505. Connecting sleeve; 506. Insertion block; 507. Second spring; 508. Eccentric block; 509. Spiral plate; 6. Handle. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0042] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0043] Example 1: Please refer to Figure 1-6 The present invention provides a technical solution: a construction device for preventing cracks in ultra-high concrete bridge towers, including a grout pump 1 and a fixing plate 3. The top of the grout pump 1 is fixedly connected to a transport pipe 2, the top of the fixing plate 3 is fixedly connected to a handle 6, the bottom of the handle 6 is movably connected to a metering mechanism 4, the bottom of the metering mechanism 4 is fixedly connected to a leveling mechanism 5, and the grout pump 1 is a self-sensing pump that stops working when the pressure in the output pipe is too high.

[0044] The quantitative mechanism 4 includes:

[0045] Blocking sleeve 404 is fixedly connected to the end of transport pipe 2 away from slurry pump 1;

[0046] Rotating tube 410, the rotating tube 410 is set at the bottom of the blocking sleeve 404;

[0047] The movable tube 413 is movably connected to the bottom of the rotating tube 410.

[0048] The operator holds handle 6, inserts the moving pipe 413 into the gap, and then puts the feeding structure of the grout pump 1 into the filling grout to fill the gap. The grout pump 1 then sends the filling grout out through the transport pipe 2, and the filling grout is discharged into the gap through the rotating pipe 410 and the moving pipe 413 to fill the gap.

[0049] When filling the gap, the blocking sleeve 404 cuts off the conveyed filling grout, which can prevent the filling grout from being filled in too much. The top of the fixed plate 3 is movably connected to the fixed sleeve 401, the bottom of the fixed sleeve 401 is fixedly connected to the fixed platform 411, the inside of the fixed sleeve 401 is fixedly connected to the connecting pipe 402, the connecting pipe 402 is fixedly connected to the bottom of the blocking sleeve 404, the outer wall of the rotating pipe 410 is movably connected to the connecting pipe 402 through the bearing, and the bottom of the fixed platform 411 is fixedly connected to the contact platform 412.

[0050] The filling grout is fed into the rotating pipe 410 through the transport pipe 2 via the blocking sleeve 404 and the connecting pipe 402. After filling the crack, the inside of the blocking sleeve 404 is cut off, which can cut off the transport pipe 2 from delivering the filling grout into the crack.

[0051] The pressure is increased after the crack is filled with filling grout to check whether the crack is filled with filling grout. A blocking plate 405 is movably connected inside the blocking sleeve 404. A second connecting rod 407 is fixedly connected to the right side of the blocking plate 405. A first spring 408 is fixedly connected to the right side of the second connecting rod 407. The first spring 408 is fixedly connected to the top of the fixed platform 411. A first connecting rod 406 is fixedly connected to the left side of the blocking sleeve 404. A standby magnet 409 is fixedly connected to the left side of the first connecting rod 406. A trigger rod 414 is fixedly connected to the outer wall of the moving tube 413. A trigger magnet 403 is fixedly connected to the top of the trigger rod 414 at the corresponding position of the standby magnet 409.

[0052] Once the gap is filled with grout, the bottom of the moving tube 413 continues to inject grout, increasing the pressure of the grout inside the gap. This pushes the moving tube 413 upwards, causing the trigger rod 414 to move upwards in sync. When the moving tube 413 is pushed out of the gap, the trigger rod 414 pushes the trigger magnet 403 to the corresponding position of the standby magnet 409. Subsequently, the standby magnet 409 and the trigger magnet 403 attract each other through magnetic force, causing the standby magnet 409 to be pulled towards the trigger magnet 403. This pulls the blocking plate 405 and simultaneously extends the first spring 408. The blocking plate 405 seals the section connecting the transport tube 2 and the connecting tube 402, preventing the grout from overflowing from the gap.

[0053] Using a highly elastic inflatable extension to contact the concrete surface of the bridge tower can effectively fill the gaps at the top of the concrete and prevent the filling grout from leaking out. The leveling mechanism 5 includes a rubber airbag 501, which is fixedly connected to the bottom of the contact platform 412. The bottom of the contact platform 412 is located inside the rubber airbag 501 and is fixedly connected to three support blocks 502. The bottom of the support blocks 502 is rounded, and the inner wall of the rubber airbag 501 is a smooth rubber surface. This reduces friction and prevents the support blocks 502 from damaging the rubber airbag 501.

[0054] When the operator holds handle 6 and inserts the moving tube 413 into the gap, and pushes handle 6, the support block 502 presses against the concrete wall through the outer skin of the rubber airbag 501. This causes the rubber airbag 501 to be squeezed by the contact platform 412 and the concrete, increasing the air pressure inside the rubber airbag 501. Under the action of the internal air pressure, the rubber airbag 501 adheres to the concrete surface, preventing excess filling grout from leaking out of the gap after it is injected into the gap. This also prevents the pressure of the filling grout in the gap from decreasing due to leakage when the rotating tube 410 is injected into the gap.

[0055] Example 2: Please refer to Figure 1-13 Based on Embodiment 1, the present invention provides the following technical solution:

[0056] The filling grout has poor fluidity and fills the gap slowly when injected into it. A drive motor 503 is fixedly connected to the bottom of the fixed platform 411, and a transmission belt 504 is movably connected to the top of the drive motor 503. The transmission belt 504 is movably connected to the outer wall of the rotating tube 410, and an eccentric block 508 is fixedly connected to the outer wall of the rotating tube 410.

[0057] When the rotating tube 410 injects filling grout into the gap, the drive motor 503 drives the rotating tube 410 to rotate via the transmission belt 504. The rotation of the rotating tube 410 drives the eccentric block 508 to rotate, causing the rotating tube 410 to rotate in a wobbling manner. At the same time, there is a gap between the fixed plate 3 and the fixed sleeve 401. Based on the space for the rotating tube 410 to move, the operator can hold the handle 6 to fix the fixed plate 3, which can make the rotating tube 410 vibrate. At the same time, the moving tube 413 that discharges the filling grout also vibrates, so that the filling grout is filled into the gap in a shaking state. Since the filling grout is relatively viscous, it can also be pulled inside the gap, which can enhance the fluidity of the filling grout inside the gap and promote the filling grout to quickly fill the gap.

[0058] When the rotating tube 410 is pushed upward by the filling grout inside the gap, the filling grout inside the moving tube 413 will connect with the filling grout inside the gap, and the connection will be cut off, so that the filling cross section is relatively flat. A spiral plate 509 is fixedly connected inside the moving tube 413, and a second spring 507 is fixedly connected to the top of the moving tube 413. The top of the second spring 507 is movably connected to the outer wall of the rotating tube 410 through a bearing.

[0059] A connecting sleeve 505 is fixedly connected to the inner wall of the rotating tube 410, and an insertion block 506 is fixedly connected to the inner wall of the moving tube 413 at the corresponding position of the connecting sleeve 505. The second spring 507 will push the rotating tube 410 downward, so that the connecting sleeve 505 and the insertion block 506 inside the rotating tube 410 remain separated during injection cut-off, so as to prevent the spiral plate 509 from being driven to rotate and obstructing the discharge of the filling slurry. At the same time, the second spring 507 will cause the moving tube 413 to be pushed upward by the filling slurry and then pushed downward, thereby increasing the pressure of the filling slurry inside the gap, promoting the filling slurry to spread and fill inside the gap, and further improving the filling speed of the filling slurry in the gap.

[0060] After the rotating tube 410 is pushed upward, the insertion block 506 inside the moving tube 413 is engaged with the connecting sleeve 505. Through the connection between the insertion block 506 and the connecting sleeve 505, the moving tube 413 and the rotating tube 410 can rotate synchronously. The rotation of the moving tube 413 will synchronously drive the spiral plate 509 inside the moving tube 413. The spiral plate 509 will push the filling grout into the moving tube 413, thereby cutting off the filling grout inside the rotating tube 410 and the gap. At the same time, the vibration will make the moving tube 413 sway back and forth, which can play a leveling role near the cut surface, making the filling grout flat on the gap.

[0061] Example 3: Please refer to Figure 1-13 Based on Embodiment 1 and Embodiment 2, the present invention provides the following technical solution:

[0062] Construction method of construction device for preventing cracks in ultra-high concrete bridge towers:

[0063] S1. Use a soft cleaning brush to reach into the gaps of the bridge tower and brush, then use a vacuum cleaner to suck out the dust from the gaps;

[0064] S2. After cleaning the inside of the gap, prepare the filling grout.

[0065] S3. Place the feeding structure of the grout pump 1 into the prepared filling grout. The operator holds the handle 6, inserts the moving pipe 413 into the gap, and pushes the handle 6 towards the bridge tower until the support block 502 pushes against the concrete through the rubber air bag 501. Start the grout pump 1 to push the filling grout for transportation, so that the filling grout fills into the crack. When the grout pump 1 stops working, the operator pulls the handle 6 outward to remove the device.

[0066] S4. Inspect the filled gaps.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A construction device for preventing cracks in ultra-high concrete bridge towers, comprising a grouting pump (1) and a fixing plate (3), characterized in that: The top of the slurry pump (1) is fixedly connected to a transport pipe (2), the top of the fixed plate (3) is fixedly connected to a handle (6), the bottom of the handle (6) is movably connected to a metering mechanism (4), and the bottom of the metering mechanism (4) is fixedly connected to a leveling mechanism (5). The quantitative mechanism (4) includes: A blocking sleeve (404) is fixedly connected to one end of the transport pipe (2) away from the slurry pump (1); Rotating tube (410), the rotating tube (410) is disposed at the bottom of the blocking sleeve (404); A movable tube (413) is movably connected to the bottom of a rotating tube (410); The top of the fixed plate (3) is movably connected to a fixed sleeve (401), the bottom of the fixed sleeve (401) is fixedly connected to a fixed platform (411), the inside of the fixed sleeve (401) is fixedly connected to a connecting pipe (402), the connecting pipe (402) is fixedly connected to the bottom of the blocking sleeve (404), the outer wall of the rotating pipe (410) is movably connected to the connecting pipe (402) through a bearing, and the bottom of the fixed platform (411) is fixedly connected to a contact platform (412). The blocking sleeve (404) is movably connected to a blocking plate (405). A second connecting rod (407) is fixedly connected to the right side of the blocking plate (405). A first spring (408) is fixedly connected to the right side of the second connecting rod (407). The first spring (408) is fixedly connected to the top of the fixed platform (411). A first connecting rod (406) is fixedly connected to the left side of the blocking sleeve (404). A standby magnet (409) is fixedly connected to the left side of the first connecting rod (406). A trigger rod (414) is fixedly connected to the outer wall of the moving tube (413). A trigger magnet (403) is fixedly connected to the top of the trigger rod (414) at the corresponding position of the standby magnet (409). The leveling mechanism (5) includes a rubber airbag (501), which is fixedly connected to the bottom of the contact platform (412). The bottom of the contact platform (412) is located inside the rubber airbag (501) and is fixedly connected to three support blocks (502).

2. The construction device for preventing cracks in ultra-high concrete bridge towers according to claim 1, characterized in that: The bottom of the fixed platform (411) is fixedly connected to a drive motor (503), the top of the drive motor (503) is movably connected to a transmission belt (504), the transmission belt (504) is movably connected to the outer wall of the rotating tube (410), and the outer wall of the rotating tube (410) is fixedly connected to an eccentric block (508).

3. The construction device for preventing cracks in ultra-high concrete bridge towers according to claim 2, characterized in that: A spiral plate (509) is fixedly connected inside the moving tube (413), and a second spring (507) is fixedly connected to the top of the moving tube (413). The top of the second spring (507) is movably connected to the outer wall of the rotating tube (410) through a bearing.

4. The construction device for preventing cracks in ultra-high concrete bridge towers according to claim 3, characterized in that: A connecting sleeve (505) is fixedly connected to the inner wall of the rotating tube (410), and an insertion block (506) is fixedly connected to the inner wall of the moving tube (413) at the corresponding position of the connecting sleeve (505).

5. A construction method for using the construction device for preventing cracks in ultra-high concrete bridge towers as described in claim 4, characterized in that: S1. Use a soft cleaning brush to reach into the gaps of the bridge tower and brush, then use a vacuum cleaner to suck out the dust from the gaps; S2. After cleaning the inside of the gap, prepare the filling grout. S3. Place the feeding structure of the grout pump (1) into the prepared filling grout. The operator holds the handle (6), inserts the moving pipe (413) into the gap, and pushes the handle (6) towards the bridge tower until the support block (502) pushes the concrete through the rubber air bag (501). Start the grout pump (1) to push the filling grout for transportation, so that the filling grout fills into the crack. When the grout pump (1) stops working, the operator pulls the handle (6) outward to remove the device. S4. Inspect the filled gaps.

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