Anchor sealing device for anchor recess of prefabricated box girder

Abstract

The invention provides a prefabricated box girder anchor recess anchor sealing device which comprises a lifting platform, an anchor sealing machine is arranged on the lifting platform and comprises a pressure plate capable of moving linearly and a transition plate, a plurality of vibration rods are arranged on the transition plate in the circumferential direction, a plurality of through holes are formed in the pressure plate, the vibration rods penetrate through the through holes of the pressure plate, and the pressure plate and the transition plate can move relatively. The problem that the beam end sealing anchor pouring quality of the prefabricated box beam cannot be guaranteed is solved.

Description

Technical Field

[0001] The present invention relates to the field of sealing the anchor of precast box girders, and in particular to an anchor hole sealing device for precast box girders. Background Art

[0002] Most of the superstructures of high-speed railways adopt precast box girders. As the direct load-bearing part of high-speed trains, precast box girders are crucial in the entire project construction. At present, precast box girders are basically produced in a factory and intensive manner. After the tensioning is completed, the sealing of the anchor of the precast box girder is to bond the concrete with the exposed prestressed steel strands to prevent the steel strands from being eroded, so as to improve the overall mechanical properties of the box girder and ensure the overall quality of the beam body.

[0003] At present, the end sealing of the precast box girder mainly adopts the traditional manual operation method for construction. The main construction method is to first roughen the anchor hole, then place the steel mesh, install the formwork, manually fill the concrete, tap it with a rubber hammer, and finally finish with mortar. This method has low construction efficiency, and the pouring quality of the concrete cannot be guaranteed. The precast box girder cannot be erected in time, which affects the project progress. Summary of the Invention

[0004] The present invention provides an anchor hole sealing device for precast box girders, which solves the problem that the pouring quality of the end sealing of the precast box girder cannot be guaranteed.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: an anchor hole sealing device for precast box girders, including a lifting platform, on which a sealing machine is provided. The sealing machine includes a pressing plate and a transition plate that can move linearly. A plurality of vibrating rods are arranged circumferentially on the transition plate. A plurality of through holes are provided on the pressing plate, and each vibrating rod passes through each through hole of the pressing plate. The pressing plate and the transition plate can move relative to each other.

[0006] In a preferred solution, a concrete feeding port is provided on the pressing plate, and the concrete feeding port is communicated with the inside of the anchor hole.

[0007] In a preferred solution, the sealing machine is provided with a working box. At one end of the working box, a first actuator cylinder and a second actuator cylinder are provided. The second actuator cylinder drives the transition plate to move. There is also a buckling cover. One end of the buckling cover is open and buckles the port of the anchor hole. An inner cavity part is provided inside the buckling cover. The pressing plate is slidably sleeved with the inner wall of the inner cavity part. The first actuator cylinder passes through the buckling cover and drives the pressing plate to move. A concrete feeding port is provided at the upper end of the buckling cover, and the concrete feeding port is communicated with the inner cavity part.

[0008] In a preferred solution, a threaded sleeve is provided at the bottom end of the buckling cover. A guide rod is slidably sleeved inside the threaded sleeve. One end of the guide rod is connected to the pressing plate, and a stop end is provided at the other end of the guide rod. A spring is provided between the stop end and the threaded sleeve, and the end of the threaded sleeve abuts against the pressing plate.

[0009] In a preferred embodiment, the pressing plate comprises a base plate and a contact plate, and the fastening cover comprises a base cover and an orifice sleeve. The contact plate is slidably sleeved with the orifice sleeve. There are reserved spaces between the outer wall of the base plate and the inner wall of the orifice sleeve, and between the outer wall of the orifice sleeve and the inner wall of the base cover. A notch is provided at the upper end of the base cover, and the concrete feed inlet passes through the notch to be connected to the orifice sleeve. The concrete feed inlet communicates with the concave cavity. An arc-shaped baffle is provided at the upper end of the contact plate, and the arc-shaped baffle is used to block the communication port between the concrete feed inlet and the concave cavity.

[0010] In a preferred embodiment, the orifice sleeve is provided with a flange edge. A plurality of positioning columns are provided along the circumferential direction on the side of the flange edge close to the base cover. Each positioning column is provided with a ring groove. A plurality of positioning holes are provided along the circumferential direction at the end of the base cover. Each positioning column is inserted into each positioning hole, and a setscrew connected by thread is provided on the side wall of the positioning hole. The setscrew is stuck into the ring groove.

[0011] In a preferred embodiment, a swingable one-way baffle is provided in the concrete feed inlet. The upper end of the one-way baffle is hinged to the inner wall of the concrete feed inlet, and a stop neck for stopping the one-way baffle is provided on the concrete feed inlet.

[0012] In a preferred embodiment, the lifting platform comprises a base frame and a liftable lifting plate. A stop block is provided on the lifting plate. Universal wheels are provided at the lower end of the anchor sealing machine, and the universal wheels are abutted against the stop block. A flipable baffle is provided at the rear end of the anchor sealing machine. One side of the baffle is abutted against the stop block. A flip block is also provided on the lifting plate, and the lower end of the baffle is abutted against the end of the flip block.

[0013] In a preferred embodiment, the first actuating cylinder comprises a first-stage piston rod and a second-stage piston rod, and the second actuating cylinder comprises a first-stage telescopic arm and a second-stage telescopic arm.

[0014] The beneficial effects of the present invention are as follows: A vibrating rod is used to oscillate the concrete in the anchor recess, improving the uniformity of the concrete. At the same time, the bonding with the beam body is more dense and there are fewer appearance defects. Even without manually brushing fine mortar, the appearance requirements can be met; The concrete in the anchor recess is pressurized by a hydraulic or electric linear actuating cylinder, enabling the concrete to quickly reach a compliant density and improving the pouring quality; The orifice of the anchor recess is sealed with a fastening cover, and a pressing plate with an adjustable initial position is provided therein, ensuring that a single filling of concrete can meet the requirement that the compacted interface is flush with the orifice of the anchor recess, reducing the operation difficulty and labor intensity; The linear actuating cylinder can adopt a multi-stage structure and apply force in stages, reducing the single-time reaction force and improving the concrete density. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall anchor sealing machine.

[0017] Figure 2 It is the overall structure diagram of the anchor sealing machine during operation.

[0018] Figure 3 It is the internal structure diagram of the sealing anchor machine workbox.

[0019] Figure 4 It is the enlarged view of the structure at location A.

[0020] Figure 5 It is the schematic diagram at the rear baffle.

[0021] Figure 6 It is the schematic diagram of the sealing anchor machine and the lifting platform.

[0022] Figure 7 It is the reaction force structure diagram of the sealing anchor machine.

[0023] Figure 8 It is the structure diagram of the working end with an added buckle cover.

[0024] Figure 9 It is the schematic diagram of filling the anchor hole with concrete.

[0025] Figure 10 It is the schematic diagram of the one-way passing structure at the concrete feed inlet.

[0026] Figure 11 It is the schematic diagram of concrete compaction.

[0027] Figure 12 It is the structure diagram of the working end with an added aperture matching function.

[0028] Figure 13 It is the structure diagram of the quick positioning of the hole sleeve and the contact plate.

[0029] In the figure: the anchor sealing machine 1; the first actuator cylinder 101; the second actuator cylinder 102; the buckling cover 2; the concave cavity part 201; the screw sleeve 202; the guide rod 203; the stop end 204; the spring 205; the base cover 206; the orifice sleeve 207; the flange edge 208; the positioning column 209; the annular groove 210; the setscrew 211; the positioning hole 212; the notch part 213; the lifting platform 3; the base frame 301; the third actuator cylinder 302; the sliding sleeve 303; the guide rail 304; the lifting plate 305; the scissor hinge frame 306; the stop block 307; the flipping block 308; the working box 4; the pressure plate 5; the base plate 501; the contact plate 502; the reserved space 503; the arc-shaped baffle 504; the vibrating rod 6; the control box 7; the button 8; the display screen 9; the base frame 10; the concrete feeding port 11; the one-way baffle 1101; the stop neck 1102; the transition plate 12; the first-stage telescopic arm 13; the connecting seat 14; the pumping system box 15; the fuel tank 16; the small hydraulic tank 17; the large hydraulic tank 18; the oil pipe 19; the telescopic arm hydraulic system box 20; the first-stage piston rod 21; the anchor cave 22; the steel strand 2201; the structural mesh 2202; the second-stage telescopic arm 23; the second-stage piston rod 24; the connecting plate 25; the universal wheel 26; the handle ring 27; the buckle 28; the roller 29; the baffle 30. Detailed implementation mode

[0030] Embodiment 1: As Figures 1-13 shown in, a precast box girder anchor cave sealing device includes a lifting platform 3. There is an anchor sealing machine 1 on the lifting platform 3. The anchor sealing machine 1 includes a pressure plate 5 and a transition plate 12 that can move linearly. A plurality of vibrating rods 6 are arranged circumferentially on the transition plate 12. There are a plurality of through holes on the pressure plate 5. Each vibrating rod 6 passes through each through hole of the pressure plate 5. The pressure plate 5 and the transition plate 12 can move relative to each other.

[0031] Install the structural mesh 2202 in the anchor cave 22. Lift the anchor sealing machine 1 to the corresponding height through the lifting platform 3, and adjust the pressure plate 5 to align with the anchor cave 22. The transition plate 12 extends forward to insert the vibrating rods 6 into the concrete filled in the anchor cave 22. The pressure plate 5 moves to seal the orifice of the anchor cave 22. After vibration, the transition plate 12 retracts and pulls out the vibrating rods 6 until the ends are flush with the side of the pressure plate 5 close to the anchor cave 22. At this time, the vibrating rods 6 block the through holes of the pressure plate 5, and the pressure plate 5 moves forward to compact the concrete.

[0032] There is a vibration motor inside the vibrating rod 6, and the circuit is led out from the rear end.

[0033] In a preferred solution, there is a concrete feeding port 11 on the pressure plate 5, and the concrete feeding port 11 is communicated with the inside of the anchor cave 22.

[0034] A small notch can be opened at the outer edge of the upper end of the pressure plate 5 and a funnel-shaped structure can be welded to form the concrete feeding port 11, which is convenient for connecting the feeding pipeline or manually pouring concrete.

[0035] Since the anchor hole 22 has a lateral opening, in order to prevent the concrete from overflowing, it is necessary to first block the pressure plate 5 at the port of the anchor hole 22. A notch is opened at the upper end of the pressure plate 5 and the concrete feed inlet 11 is installed or welded to fill the anchor hole 22 with concrete. However, since part of the edge of the pressure plate 5 needs to be embedded into the anchor hole 22, and the filled concrete is not dense, after compaction, the concrete interface shrinks inwards and is shallower than the port of the anchor hole 22. Therefore, it is necessary to fill the concrete multiple times and repeat the compaction. When the concrete interface is close to the port surface of the anchor hole 22, a layer of fine mortar is manually applied and leveled with the port surface of the anchor hole 22 to improve the aesthetics.

[0036] In a preferred embodiment, the anchor sealing machine 1 is provided with a working box 4. One end of the working box 4 is provided with a first actuator cylinder 101 and a second actuator cylinder 102. The second actuator cylinder 102 drives the transition plate 12 to move. There is also a buckle cover 2. One end of the buckle cover 2 is open and buckles on the port of the anchor hole 22. An inner cavity portion 201 is provided inside the buckle cover 2. The pressure plate 5 is slidably sleeved on the inner wall of the inner cavity portion 201. The first actuator cylinder 101 passes through the buckle cover 2 and drives the pressure plate 5 to move. A concrete feed inlet 11 is provided at the upper end of the buckle cover 2, and the concrete feed inlet 11 communicates with the inner cavity portion 201.

[0037] The buckle cover 2 is provided with a process hole for avoiding the vibrating rod 6.

[0038] The buckle cover 2 is buckled outside the anchor hole 22, and the concrete will not leak out during filling. The depth of the inner cavity portion 201 is greater than the thickness of the pressure plate 5. Therefore, when pouring concrete into the anchor hole 22 from the concrete feed inlet 11, a part of the concrete in the inner cavity portion 201 will be stored in the inner cavity portion 201. When the pressure plate 5 compresses the concrete, the volume of the concrete decreases and can be closer to the port surface of the anchor hole 22, eliminating the need for secondary or tertiary concrete filling.

[0039] In a preferred embodiment, the bottom end of the buckle cover 2 is provided with a threaded sleeve 202. A guide rod 203 is slidably sleeved inside the threaded sleeve 202. One end of the guide rod 203 is connected to the pressure plate 5, and the other end of the guide rod 203 is provided with a stop end 204. A spring 205 is provided between the stop end 204 and the threaded sleeve 202, and the end of the threaded sleeve 202 abuts against the pressure plate 5.

[0040] The spring 205 is sleeved on the tail end of the guide rod 203 and uses the guide rod 203 as a base to stop the stop end 204, so that the pressure plate 5 has a tendency to approach the bottom end of the buckle cover 2, and the pressure plate 5 is stopped at the end of the threaded sleeve 202. The threaded sleeve 202 passes through the bottom plate of the buckle cover 2. Therefore, the threaded sleeve 202 can be rotated from the outside to adjust the distance that the threaded sleeve 202 protrudes from the bottom end of the buckle cover 2, that is, to adjust the volume of the remaining space in the inner cavity portion 201 when the pressure plate 5 is in the deepest position. According to different concretes, the volume of the remaining space in the inner cavity portion 201 is specifically adjusted so that after the pressure plate 5 compresses the concrete, the concrete interface is exactly close to the port surface of the anchor hole 22, leaving a position for the final application of fine mortar.

[0041] When the requirement for the aesthetics of the end face is not high, there is no need to apply fine mortar again, and the adjusting sleeve 202 can be adjusted so that when compacting for the first time, the concrete interface is exactly flush with the end face of the anchor hole 22.

[0042] Due to slight dimensional differences in the anchor holes 22 of precast box girders of different specifications, which are mainly in the inner diameter and depth of the anchor holes 22, it is difficult to replace the buckles 2 and the pressure plates 5 if they are directly connected to the actuator cylinders.

[0043] In a preferred solution, the pressure plate 5 includes a base plate 501 and a contact plate 502, the buckle 2 includes a base cover 206 and an orifice sleeve 207, the contact plate 502 is slidably sleeved with the orifice sleeve 207, a reserved space 503 is provided between the outer wall of the base plate 501 and the inner wall of the orifice sleeve 207 and between the outer wall of the orifice sleeve 207 and the inner wall of the base cover 206, a notch portion 213 is provided at the upper end of the base cover 206, the concrete inlet 11 passes through the notch portion 213 to be connected to the orifice sleeve 207, the concrete inlet 11 is communicated with the concave cavity portion 201, an arc-shaped baffle 504 is provided at the upper end of the contact plate 502, and the arc-shaped baffle 504 is used to block the communication port between the concrete inlet 11 and the concave cavity portion 201.

[0044] The contact plate 502, the orifice sleeve 207 and the adjusting sleeve 202 are coaxially arranged. The contact plate 502 is a structure for compacting concrete. The orifice sleeve 207 just matches the contact plate 502 and serves as a guiding structure for the contact plate 502. At the same time, it prevents concrete from entering the space behind the contact plate 502.

[0045] The orifice sleeve 207 and the contact plate 502 are selected to match the aperture specifications of the anchor holes 22, and a relatively large space can be reserved in the reserved space 503 to adapt to various anchor holes 22 with different apertures.

[0046] When the base plate 501 moves forward, the arc-shaped baffle 504 gradually blocks the communication port between the concrete inlet 11 and the concave cavity portion 201 to prevent the pressure from pressing the concrete into the concrete inlet 11.

[0047] The first actuator cylinder 101 and the second actuator cylinder 102 can adopt servo electric cylinders or hydraulic cylinders with electro-hydraulic proportional control, and can flexibly adjust the depths of the pressure plate 5 and the vibrating rod 6.

[0048] In a preferred solution, the orifice sleeve 207 is provided with a flange edge 208. A plurality of positioning columns 209 are provided along the circumferential direction on the side of the flange edge 208 close to the base cover 206. Each positioning column 209 is provided with a ring groove 210. A plurality of positioning holes 212 are provided along the circumferential direction at the end of the base cover 206. Each positioning column 209 is inserted into each positioning hole 212, and a setscrew 211 with a threaded connection is provided on the side wall of the positioning hole 212, and the setscrew 211 is clamped into the ring groove 210.

[0049] The connection structure between the contact plate 502 and the base plate 501 is the same as that between the orifice sleeve 207 and the base cover 206. When disassembling, first loosen the setscrew 211 inside the side wall of the base cover 206, remove the orifice sleeve 207, and then the first actuator cylinder 101 pushes out the pressure plate 5. Loosen the locking setscrew on the side wall of the base plate 501 to remove the contact plate 502.

[0050] In a preferred solution, a swingable one-way baffle 1101 is provided inside the concrete feed inlet 11. The upper end of the one-way baffle 1101 is hinged to the inner wall of the concrete feed inlet 11, and the concrete feed inlet 11 is provided with a stop neck 1102 for stopping the one-way baffle 1101.

[0051] For the solution where the concrete feed inlet 11 is arranged at the notch of the pressure plate 5, when the pressure plate 5 compresses the concrete, the concrete has a tendency to overflow reversely from the concrete feed inlet 11, causing the one-way baffle 1101 to reverse and abut against the stop neck 1102, blocking the outlet.

[0052] For the solution where the concrete feed inlet 11 is arranged on the buckle cover 2, if the overall thickness or the edge thickness of the pressure plate 5 is sufficient, it can block the connection port of the concrete feed inlet 11 on the side wall during the process of squeezing the concrete, preventing the concrete in the concrete feed inlet 11 from entering the back side of the pressure plate 5.

[0053] If the concrete feed inlet 11 is arranged on the side wall of the orifice sleeve 207 of the buckle cover 2, in this solution, the contact plate 502 is relatively thin, and an arc-shaped baffle 504 with the same curvature as the inner wall of the orifice sleeve 207 needs to be welded to the contact plate 502 to fit and block the connection port of the concrete feed inlet 11 when the contact plate 502 moves, preventing the concrete from entering the back side of the contact plate 502.

[0054] In a preferred solution, the lifting platform 3 includes a base frame 301 and a liftable lifting plate 305. A stop block 307 is provided on the lifting plate 305. A universal wheel 26 is provided at the lower end of the anchor sealing machine 1, and the universal wheel 26 abuts against the stop block 307. A flip-up baffle 30 is provided at the rear end of the anchor sealing machine 1. One side of the baffle 30 abuts against the stop block 307. A flip block 308 is also provided on the lifting plate 305, and the lower end of the baffle 30 abuts against the end of the flip block 308.

[0055] Guide rails 304 are provided at the upper end of the base frame 301 and the lower end of the lifting plate 305. A slidable sliding sleeve 303 is sleeved on the guide rails 304. A third actuator cylinder 302 is provided at one end of the base frame 301, and the rod end of the third actuator cylinder 302 is connected to the sliding sleeve 303 on the base frame 301. A scissor hinge frame 306 is provided between the base frame 301 and the lifting plate 305. Both the upper and lower ends of the scissor hinge frame 306 are provided with two connecting rod ends. One connecting rod end is hinged to the sliding sleeve 303, and the other is hinged to the base frame 301 and the lifting plate 305.

[0056] Push the anchor sealing machine 1 until the universal wheels 26 abut against the stop block 307. At this time, the baffle 30 can be flipped down from the anchor sealing machine 1 and abut against the stop block 307. The flipping block 308 flips to abut against the lower end of the baffle 30, clamping the baffle 30 in the middle. Thus, the anchor sealing machine 1 has two reverse support points, namely the universal wheels 26 and the baffle 30.

[0057] The lower end of the lifting platform 3 is also equipped with relatively large-sized universal wheels. However, due to their relatively large size, Fuma wheels with built-in telescopic feet can be used, which are sufficient to counteract the reaction force during the operation of the anchor sealing machine 1.

[0058] Embodiment 2: A rapid anchor sealing device and method for precast box girders, including a bottom frame 10, a working box 4 fixedly installed on the surface of the bottom frame body, a foldable bracket 30 installed on one side of the working box, and a control box 7 installed on the top of the working box.

[0059] Pulley frames are installed at the four feet of the bottom frame, and movable universal wheels are installed at the bottom of the pulley frames. Locking devices are provided for all the universal wheels, and the material of the universal wheels is striped rubber material.

[0060] A hydraulic transmission system is installed inside the working box, which includes a large hydraulic tank 18 and a small hydraulic tank 17. The two hydraulic tanks are connected to the fuel tank 16 through two oil pipes 19 to form a circuit. The pumping system box 15 is connected to the hydraulic transmission system and the control box 7. A first-stage piston rod 21 is arranged inside the large hydraulic tank 18, a second-stage piston rod 24 is arranged inside the first-stage piston rod 21, the surface of the second-stage piston rod 24 is a connecting plate 25, and three mounting holes at different positions are arranged on the connecting plate. The connecting plate 25 is bolted to the pressure plate 5 through the mounting holes. Above the first-stage piston rod 21 is a telescopic arm hydraulic system box 20, and the telescopic arm hydraulic system box, the large hydraulic tank, and the small hydraulic tank are on the same axis. Three telescopic first-stage telescopic arms 13 are arranged in front of the telescopic arm hydraulic system box 20, a second-stage telescopic arm 23 is arranged inside the first-stage telescopic arm 13, and the second-stage telescopic arm 23 is connected to the transition plate 12 through a connecting seat 14. Six mounting holes at different positions are respectively arranged on the transition plate and the pressure plate, and each mounting hole is on the same axis. Six vibrating rods 6 are arranged inside the telescopic arm hydraulic system box 20, and the vibrating rods 6 pass through the transition plate 12 and are fixed on the pressure plate 5. A concrete feeding port is arranged above the pressure plate.

[0061] The control box 7 includes start, stop, pressurize, unload, and vibration amplitude adjustment buttons 8, and a display screen 9 is provided, which can display the pressure value, vibration time, and the operating status of the hydraulic transmission system.

[0062] The folding bracket is composed of two baffles 30, which are connected by a roller shaft 29. One side of the baffle 30 is connected to the working box by welding. Two buckles 28 are arranged at the middle positions on both sides of the baffle 30 for fixing the baffle 30. A handle ring 27 is arranged above the baffle. The bottom of the other baffle 30 is serrated for stabilizing the whole device.

[0063] The construction method for rapid sealing of the precast box girder anchor includes the following steps: S1. Open the lock, and use the handle ring 27 to move the anchor sealing device to the anchor sealing position. Loosen the buckle 28, open the folding bracket, and the serrated opening of the bottom baffle 30 is stuck on the lifting frame, so that the pressing plate 4 and the anchor hole are on the same horizontal line, and lock the universal wheels.

[0064] S2. Connect the power supply, click the start button 8 to start the pumping system box 15, and perform step-by-step pressurization. The piston rod in the small hydraulic tank 17 sends oil through the oil pipe to push the first-stage piston rod 21 and the second-stage piston rod 24 in the large hydraulic tank 18 to move. The connecting plate 25 on the surface of the second-stage piston rod 24 is connected to the pressing plate 5, driving the pressing plate 5 to move to the anchor hole, and the inner surface of the pressing plate is flush with the surface of the anchor hole.

[0065] S3. Click the button 8 to start the telescopic arm hydraulic system. The first-stage telescopic arm 13 and the second-stage telescopic arm 23 start to move. The second-stage telescopic arm 23 is connected to the transition plate 12 through the connecting seat 14 and moves forward to the middle position between the first-stage piston rod 24 and the pressing plate for fixing the vibrating rod.

[0066] S4. Pour concrete through the concrete feeding port 11 on the upper part of the pressing plate 5, turn on the vibration button 8, rotate the vibration button 8 to adjust the vibration amplitude, and the vibration time is 15 - 20 s. Pressurization is carried out simultaneously during the vibration process, and the pressure gauge is pressurized to 0.8 - 1.0 MPa to make the outer surface of the sealing plate and the anchor hole on the same horizontal line.

[0067] S5. After the vibration is completed, click the unloading button 8, and the first-stage piston rod 21, the second-stage piston rod 24, the first-stage telescopic arm 13 and the second-stage telescopic arm 23 return to their original positions, retract the folding bracket, and open the universal wheel lock.

[0068] The pressure plate and the concrete can be closely attached together through a hydraulic transmission system. Compared with the traditional method of using wooden formwork and tie rods for fixation, the construction speed is fast, the reuse rate of the pressure plate is high, and the pressure plate can be directly disassembled after construction, which is applicable to anchor holes of different shapes. A telescopic arm hydraulic system is set up, and vibrating rods are arranged at different positions of the pressure plate through a transition plate. The vibration amplitude and time are adjusted according to the state of the concrete. During the vibration process, the pressure plate is pressurized in stages at the same time, so that the concrete is uniform and dense. Compared with the traditional method of using a single vibrating rod inserted from the feeding port to vibrate the concrete, the construction speed is fast, the damage to the prestressed tendons is small, the vibration range is wide, the bonding with the beam body is dense, the appearance defects are few, the surface flatness is high, and the quality of the concrete is more guaranteed.

[0069] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A precast box girder anchor recess sealing and anchoring device, characterized in that: It includes a lifting platform (3), on which there is an anchor sealing machine (1). The anchor sealing machine (1) includes a pressure plate (5) and a transition plate (12) that can move linearly. Along the circumferential direction of the transition plate (12), there are multiple vibrating rods (6). The pressure plate (5) is provided with multiple through holes, and each vibrating rod (6) passes through each through hole of the pressure plate (5). The pressure plate (5) and the transition plate (12) can move relative to each other.

2. The precast box girder anchor recess grouting device according to claim 1, characterized in that: The pressure plate (5) is provided with a concrete feeding port (11), and the concrete feeding port (11) is in internal communication with the anchor hole (22).

3. The precast box girder anchor recess sealing device according to claim 1, characterized in that: the seal The anchor machine (1) is provided with a working box (4). At one end of the working box (4), there is a first actuator cylinder (101) and a second actuator cylinder (102). The second actuator cylinder (102) drives the transition plate (12) to move. There is also a buckle cover (2). One end of the buckle cover (2) is open and buckles the port of the anchor hole (22). Inside the buckle cover (2), there is a concave cavity part (201). The pressure plate (5) is slidably sleeved on the inner wall of the concave cavity part (201). The first actuator cylinder (101) passes through the buckle cover (2) and drives the pressure plate (5) to move. At the upper end of the buckle cover (2), there is a concrete feeding port (11), and the concrete feeding port (11) is in communication with the concave cavity part (201).

4. The precast box girder anchor hole sealing device according to claim 3, characterized in that: At the bottom end of the buckle cover (2), there is a screw sleeve (202) connected by threads. Inside the screw sleeve (202), there is a guide rod (203) slidably sleeved. One end of the guide rod (203) is connected to the pressure plate (5), and at the other end of the guide rod (203), there is a stop end (204). Between the stop end (204) and the screw sleeve (202), there is a spring (205), and the end of the screw sleeve (202) abuts against the pressure plate (5).

5. The precast box girder anchor recess sealing device according to claim 4, characterized in that: The pressure plate (5) includes a base plate (501) and a contact plate (502). The buckle cover (2) includes a base cover (206) and an orifice sleeve (207). The contact plate (502) is slidably sleeved on the orifice sleeve (207). There are reserved spaces (503) between the outer wall of the base plate (501) and the inner wall of the orifice sleeve (207), and between the outer wall of the orifice sleeve (207) and the inner wall of the base cover (206). At the upper end of the base cover (the buckle cover) (206), there is a notch part (213). The concrete feeding port (11) passes through the notch part (213) to be connected to the orifice sleeve (207), and the concrete feeding port (11) is in communication with the concave cavity part (201). At the upper end of the contact plate (502), there is an arc-shaped baffle (504), and the arc-shaped baffle (504) is used to block the communication port between the concrete feeding port (11) and the concave cavity part (201).

6. The precast box girder anchor recess grouting device according to claim 5, wherein: The orifice sleeve (207) is provided with a flange edge (208). Along the circumferential direction on the side of the flange edge (208) close to the base cover (206), there are multiple positioning columns (209). Each positioning column (209) is provided with an annular groove (210). Along the circumferential direction at the end of the base cover (206), there are multiple positioning holes (212). Each positioning column (209) is inserted into each positioning hole (212), and on the side wall of the positioning hole (212), there is a setscrew (211) connected by threads, and the setscrew (211) is stuck into the annular groove (210).

7. The precast box girder anchor recess sealing device according to claim 2 or 3, characterized in that: A swingable one-way baffle (1101) is provided inside the concrete feed inlet (11). The upper end of the one-way baffle (1101) is hinged to the inner wall of the concrete feed inlet (11), and the concrete feed inlet (11) is provided with a stop neck (1102) for stopping the one-way baffle (1101).

8. The precast box girder anchor recess sealing device according to claim 1, characterized in that: The lifting platform (3) includes a base frame (301) and a liftable lifting plate (305). A stop block (307) is provided on the lifting plate (305). Universal wheels (26) are provided at the lower end of the anchor sealing machine (1), and the universal wheels (26) abut against the stop block (307). A flip-up baffle (30) is provided at the rear end of the anchor sealing machine (1), and one side of the baffle (30) abuts against the stop block (307). A flip block (308) is also provided on the lifting plate (305), and the lower end of the baffle (30) abuts against the end of the flip block (308).

9. The precast box girder anchor recess sealing device according to claim 3, wherein: The first actuator cylinder (101) includes a first-stage piston rod (21) and a second-stage piston rod (24). The second actuator cylinder (102) includes a first-stage telescopic arm (13) and a second-stage telescopic arm (23).

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