A high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system

Abstract

The application provides a high-pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system and belongs to the technical field of bridge closure construction. The high-pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system comprises a base plate, vertical plates slidably arranged on the front and back sides of the upper end surface of the base plate, a pier, a fastening mechanism arranged on the left and right side walls of the base plate, a clamping mechanism arranged in the inner cavity of the base plate, a sealing mechanism, a pressure storage box fixedly arranged on the side wall of the vertical plate, a demolding oil filled in the pressure storage box and a demolding mechanism. The clamping mechanism and the sealing mechanism are cooperated to firmly fix the base plate and the vertical plate on the side bottom surface and the side wall of the pier, so that the concrete grout is prevented from flowing out from the gap between the vertical plate and the pier during pouring. The demolding mechanism is cooperated to spray the demolding oil in the pressure storage box on the surface of the base plate and the vertical plate, so that the adsorption force of the concrete on the mold is reduced, and the workers are facilitated to remove the entire mold.

Description

Technical Field

[0001] This invention relates to the field of bridge closure construction technology, and more specifically, to a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge. Background Technology

[0002] A rigid frame bridge is a structural system between beams and arches, consisting of a bending-resistant superstructure of beams (or slabs) and a bearing-load-bearing substructure of columns (or piers) integrally combined. The superstructure and substructure are rigidly connected, resembling a frame. It comprises a deck system, lintels, and columns. The deck system directly bears the load and transfers it to the lintels. The lintels and columns are rigidly connected, with the latter replacing piers (abutments) in transferring the load to the foundation. The deck system bears bending moments and shear forces, while the lintels and columns, in addition to bearing bending moments and shear forces, also bear axial forces. They are typically constructed using reinforced concrete or prestressed concrete. This type of bridge exhibits negative bending moments at the nodes, reducing the positive bending moment at mid-span of the lintels. It has a relatively small structural height, making it suitable for overpasses and elevated road bridges, and it saves on materials. The lintels and columns of reinforced concrete rigid frame bridges are generally required to be cast integrally in situ, resulting in a lower degree of prefabrication. Closure is the process of constructing a dam or bridge by starting construction from both ends and finally joining them in the middle. During the bridge joining process, when pouring the concrete segments, a grout-stopping device needs to be installed around the joint grouting area of ​​the poured concrete blocks to prevent grout leakage.

[0003] However, existing grout-stopping devices typically use fasteners to install and assemble templates, which generally undergo irreversible deformation after use. This means the entire grout-stopping plate can only be used once, resulting in wasted materials and labor. Furthermore, gaps inevitably exist between each grout-stopping plate and the bridge pier, leading to grout leakage during concrete pouring and poor sealing. Therefore, inventing a grout-stopping system for the closure construction of high-pier prestressed concrete continuous rigid frame bridges to address these problems has become a pressing issue for those skilled in the art. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, which aims to improve the problems of existing grout-stopping plates, which can only be used once due to the perforation of fasteners, and the poor sealing between the plates.

[0005] This invention is implemented as follows:

[0006] This invention provides a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, comprising a base plate, wherein vertical plates are slidably installed on both the front and rear sides of the upper end of the base plate, and further comprising:

[0007] Bridge piers, wherein the base plate is disposed at the center of the ground between the two bridge piers;

[0008] Fastening mechanism, which is disposed on the left and right side walls of the substrate, is used to fix the substrate on the substrate;

[0009] A clamping mechanism is disposed in the inner cavity of the substrate and is used to adjust the distance between the two upright plates.

[0010] The sealing mechanism is provided in the inner cavities on both the left and right sides of the upright plate. The sealing mechanism is used to improve the sealing between the upright plate and the bridge pier.

[0011] A pressure accumulator is fixedly installed on the side wall of the upright plate and filled with release oil.

[0012] A demolding mechanism is provided inside the accumulator box. The demolding mechanism is used to spray demolding oil from inside the accumulator box onto the surfaces of the substrate and the upright plate.

[0013] Preferably, the fastening mechanism includes mounting plates fixedly installed on the left and right sidewalls of the substrate, and fastening bolts fixedly installed on the lower end face of the substrate, with fastening nuts threaded onto the outer sidewall of the fastening bolts.

[0014] Preferably, the fastening nut is attached to the outer wall of the mounting plate, the fastening bolt is connected through the mounting plate, and a plurality of fastening mechanisms are provided.

[0015] By adopting the above technical solution, the substrate can be firmly fixed at the bottom of the bridge pier, achieving the effect of pre-fixing the entire device.

[0016] Preferably, the clamping mechanism includes a limiting rod rotatably mounted in the inner cavity on one side of the substrate, and a threaded rod rotatably mounted in the inner cavity on the other side of the substrate. Both ends of the limiting rod and the threaded rod are rotatably mounted with limiting plates, and a movable plate is threaded onto the outer wall of the threaded rod.

[0017] Preferably, the limiting rod is slidably connected to the moving plate, a dual-axis servo motor is fixedly installed in the inner cavity of one side of the base plate through a frame, the output shaft end of the dual-axis servo motor is fixedly connected to the threaded rod, a heat dissipation groove is provided on the lower end surface of the base plate at the position of the dual-axis servo motor, the moving plate is fixedly connected to the upright plate, and the thread directions at both ends of the threaded rod are opposite.

[0018] By adopting the above technical solution, the movable plates on both sides can drive the upright plates to move closer to each other, thereby clamping the bridge pier.

[0019] Preferably, the sealing mechanism includes a spiral rod fixedly installed on the side wall of the upright plate and a mounting base fixedly installed on the limiting plate. A top plate is fixedly installed on the outer wall of the mounting base, and a top rod is fixedly installed on the inner wall of the top plate.

[0020] Preferably, a sliding groove is provided in the middle of the inner cavity of the upright plate, and sealing cavities are provided on the left and right sides of the inner cavity of the upright plate. A piston plate is slidably installed in the inner cavity of the sliding groove, and the piston plate is fixedly connected to the top rod. A sealing airbag is slidably installed in the inner cavity of the sealing cavity. The sealing cavity is connected to the sealing airbag through the sliding groove via an air passage. The top rod is connected to the spiral rod, and the spiral rod is connected to the mounting base.

[0021] By adopting the above technical solution, the sealing airbag can be wrapped in the gap at the connection between the vertical plate and the pier, thus preventing the mud from flowing out during concrete pouring.

[0022] Preferably, the demolding mechanism includes a liquid storage tank fixedly installed on the side wall of the upright plate, a pressure accumulator plate slidably installed in the inner cavity of the pressure accumulator box, a connecting rod fixedly installed at the bottom of the pressure accumulator plate, a return spring wound and fixedly installed on the outer wall of the connecting rod, a base plate fixedly installed on the lower end face of the connecting rod, a cam rotatably installed in the inner cavity of the mounting base, a screw rod threadedly connected to the cam, and the screw helix angle of the screw rod being greater than the equivalent friction angle of the inner cavity of the cam.

[0023] By adopting the above technical solution, the release oil in the accumulator box can be sprayed out from the sprayer through the liquid outlet pipe to achieve a coating effect on the surface of the substrate and the upright plate.

[0024] Preferably, the two liquid storage tanks are located on the left and right sides of the accumulator box, respectively, and the two ends of the reset spring are fixedly connected to the end face of the accumulator plate and the bottom surface of the accumulator box, respectively. The cam is in contact with the bottom plate.

[0025] Preferably, the accumulator is connected to the storage tank via an inlet pipe, and a one-way water valve with an outlet to the inner cavity of the accumulator is provided at the inlet pipe. A sprayer is fixedly installed on the upper end face of the upright plate. The storage tank is connected to the sprayer via an outlet pipe, and a one-way water valve with an outlet to the inner cavity of the sprayer is provided at the outlet pipe.

[0026] By adopting the above technical solution, the release oil in the storage tank can be replenished by entering the accumulator box through the inlet pipe, so that the entire device can be used for a long time.

[0027] The beneficial effects of this invention are:

[0028] 1. When closing two sections of a rigid frame bridge pier, fastening bolts are pre-fixed at the bottom of both piers. With the cooperation of the fastening mechanism, the base plate can be firmly attached to the bottom of the two pier sections, preventing grout leakage from the bottom during concrete pouring. After the base plate is fixed and installed, the clamping mechanism allows the moving plates on both sides to move the vertical plates closer together to clamp the pier. Since both the base plate and the vertical plate are flat, the sealing between the base plate and the vertical plate is sufficient to ensure that the concrete grout will not leak. At the same time, with the cooperation of the sealing mechanism, the sealing airbag can completely cover the uneven areas on the side wall of the pier, further improving the sealing between the vertical plate and the side wall of the pier, and ensuring the quality of concrete pouring when the pier is closed.

[0029] 2. When the two upright plates approach each other, the cam mounted on the mounting base will rotate continuously. Under the elastic force of the return spring, it can reciprocate to press the bottom plate that is attached to the side wall of the cam. At this time, the bottom plate will drive the connecting rod to make the accumulator plate move back and forth in the inner cavity of the accumulator box, thereby increasing the pressure of the release oil in the accumulator box. Finally, it will be sprayed out from the sprayer through the liquid outlet pipe to achieve the function of coating the surface of the base plate and the upright plate. This reduces the adhesion force on the base plate and the upright plate when the concrete solidifies later, which facilitates the demolding of the bridge pier by the workers and greatly improves the work efficiency of the workers. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a front view schematic diagram of the overall structure of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge provided by an embodiment of the present invention.

[0032] Figure 2 This is a bottom view of the overall structure of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, provided by an embodiment of the present invention.

[0033] Figure 3 This is a top view partial structural schematic diagram of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge provided by an embodiment of the present invention.

[0034] Figure 4 This is a bottom sectional view of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, provided by an embodiment of the present invention.

[0035] Figure 5 This is a partial sectional view of the side view structure of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge provided by an embodiment of the present invention.

[0036] Figure 6 This is a cross-sectional structural diagram of the vertical slab of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, provided by an embodiment of the present invention.

[0037] Figure 7 This is a schematic diagram of the two vertical plates of the grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge provided by an embodiment of the present invention, when they are squeezed against the side wall of the bridge pier.

[0038] Figure 8 This is a cross-sectional structural diagram of the accumulator box of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge, provided by an embodiment of the present invention.

[0039] In the diagram: 1. Base plate; 2. Vertical plate; 21. Sliding groove; 22. Air passage; 23. Sealing cavity; 3. Fastening mechanism; 31. Mounting plate; 32. Fastening bolt; 33. Fastening nut; 4. Clamping mechanism; 41. Limiting rod; 42. Threaded rod; 43. Limiting plate; 44. Moving plate; 45. Dual-axis servo motor; 5. Sealing mechanism; 51. Helical rod; 52. Mounting base; 53. Top plate; 54. Top rod; 55. Piston plate; 56. Sealing airbag; 6. Accumulator box; 7. Demolding mechanism; 71. Liquid storage tank; 72. Power storage plate; 73. Connecting rod; 74. Return spring; 75. Base plate; 76. Cam; 77. Liquid inlet pipe; 78. Sprayer; 79. Liquid outlet pipe. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. 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.

[0041] Example

[0042] Reference Figure 1-8 A grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge includes a base plate 1, with vertical plates 2 slidably installed on both the front and rear sides of the upper end of the base plate 1, and further includes:

[0043] The bridge piers, with base plate 1 set at the center of the ground between the two bridge piers;

[0044] Fastening mechanism 3 is provided on the left and right side walls of substrate 1. Fastening mechanism 3 is used to fix substrate 1 on substrate 1.

[0045] Clamping mechanism 4 is disposed in the inner cavity of substrate 1 and is used to adjust the distance between the two upright plates 2.

[0046] The sealing mechanism 5 is provided in the inner cavities on both the left and right sides of the upright plate 2. The sealing mechanism 5 is used to improve the sealing between the upright plate 2 and the bridge pier.

[0047] Accumulator 6 is fixedly installed on the side wall of the upright plate 2, and the accumulator 6 is filled with release oil.

[0048] Demolding mechanism 7 is located inside the accumulator box 6. Demolding mechanism 7 is used to spray demolding oil inside the accumulator box 6 onto the surfaces of the substrate 1 and the upright plate 2.

[0049] Reference Figure 1-2 Furthermore, the fastening mechanism 3 includes a mounting plate 31 fixedly installed on the left and right side walls of the substrate 1, and a fastening bolt 32 fixedly installed on the lower end face of the substrate 1. A fastening nut 33 is threadedly installed on the outer side wall of the fastening bolt 32. The fastening nut 33 is attached to the outer wall of the mounting plate 31. The fastening bolt 32 is connected to the mounting plate 31 through. A total of several fastening mechanisms 3 are provided.

[0050] It should be noted that when closing the two sections of the rigid frame bridge piers, fastening bolts 32 are fixed at the bottom of the two piers in advance. Then, a crane is used to hoist the base plate 1 and the upright plate 2 under the pier. After the mounting plate 31 fixedly connected on the upright plate 2 is connected by the fastening bolts 32, the fastening nuts 33 are tightened onto the fastening bolts 32. In this way, the entire base plate 1 can be firmly attached to the bottom of the two sections of the pier, avoiding the leakage of grout during concrete pouring.

[0051] Reference Figure 1-4 Furthermore, the clamping mechanism 4 includes a limiting rod 41 rotatably mounted in the inner cavity of one side of the substrate 1, and a threaded rod 42 rotatably mounted in the inner cavity of the other side of the substrate 1. Both ends of the limiting rod 41 and the threaded rod 42 are rotatably mounted with limiting plates 43. A movable plate 44 is threadedly mounted on the outer wall of the threaded rod 42. The limiting rod 41 and the movable plate 44 are slidably connected. A dual-axis servo motor 45 is fixedly mounted in the inner cavity of one side of the substrate 1 through a frame. The output shaft end of the dual-axis servo motor 45 is fixedly connected to the threaded rod 42. A heat dissipation groove is provided on the lower end surface of the substrate 1 at the position of the dual-axis servo motor 45. The movable plate 44 is fixedly connected to the upright plate 2. The threads at both ends of the threaded rod 42 are in opposite directions.

[0052] It should be noted that after the base plate 1 is fixedly installed, the threaded rod 42 is rotated by starting the dual-axis servo motor 45. Since the moving plate 44 is threadedly connected to the threaded rod 42 and the threads at both ends of the threaded rod 42 are in opposite directions, under the limiting action of the limiting rod 41, when the threaded rod 42 rotates, it can drive the moving plates 44 on both sides to move closer to each other at the same time. Then, the upright plate 2 fixedly installed on the moving plate 44 can clamp the side walls on both sides of the pier. Since both the base plate 1 and the upright plate 2 are flat, the sealing between the base plate 1 and the upright plate 2 is sufficient to ensure that the concrete slurry will not leak. At the same time, heat dissipation grooves are provided to ensure that the dual-axis servo motor 45 has a good heat dissipation effect when it is working, and to ensure that it works normally in a suitable environment.

[0053] Reference Figure 5-7 Furthermore, the sealing mechanism 5 includes a spiral rod 51 fixedly installed on the side wall of the upright plate 2, and a mounting seat 52 fixedly installed on the limiting plate 43. A top plate 53 is fixedly installed on the outer wall of the mounting seat 52, and a top rod 54 is fixedly installed on the inner wall of the top plate 53. A sliding groove 21 is provided in the middle of the inner cavity of the upright plate 2, and sealing cavities 23 are provided on the left and right sides of the inner cavity of the upright plate 2. A piston plate 55 is slidably installed in the inner cavity of the sliding groove 21. The piston plate 55 is fixedly connected to the top rod 54. A sealing airbag 56 is slidably installed in the inner cavity of the sealing cavity 23. The sealing cavity 23 is connected to the sealing airbag 56 through the air passage 22 through the sliding groove 21. The top rod 54 is connected to the spiral rod 51 through the air passage 22. The spiral rod 51 is connected to the mounting seat 52 through the air passage 52.

[0054] It should be noted that when the two upright plates 2 approach each other, since the mounting base 52 is fixedly mounted on the limiting plate 43, the distance between the top plate 53 fixedly mounted on the mounting base 52 and the upright plate 2 will increase. The push rod 54 fixedly connected to the top plate 53 will drive the piston plate 55 to move towards the front of the inner cavity of the sliding groove 21, and compress the air in the front inner cavity of the sliding groove 21 so that it enters the sealing cavity 23 through the air passage 22, thereby compressing the sealing airbag 56. At this time, the sealing airbag 56 can deform, such as... Figure 7 The sealing airbag 56 can completely cover the uneven areas on the side wall of the pier, thereby further improving the sealing between the upright plate 2 and the side wall of the pier and ensuring the quality of concrete pouring when the pier is closed.

[0055] Reference Figure 8Furthermore, the demolding mechanism 7 includes a liquid storage tank 71 fixedly installed on the side wall of the upright plate 2; a pressure accumulator plate 72 is slidably installed in the inner cavity of the pressure accumulator box 6; a connecting rod 73 is fixedly installed at the bottom of the pressure accumulator plate 72; a return spring 74 is wound and fixedly installed on the outer wall of the connecting rod 73; a base plate 75 is fixedly installed on the lower end face of the connecting rod 73; a cam 76 is rotatably installed in the inner cavity of the mounting base 52; a screw rod 51 is threadedly connected to the cam 76; the thread helix angle of the screw rod 51 is greater than the equivalent friction angle of the inner cavity of the cam 76; and two liquid storage tanks 7... 1 is located on the left and right sides of the accumulator box 6 respectively. The two ends of the return spring 74 are fixedly connected to the end face of the accumulator plate 72 and the bottom surface of the accumulator box 6 respectively. The cam 76 is in contact with the bottom plate 75. The accumulator box 6 is connected to the storage tank 71 through the liquid inlet pipe 77. A one-way water valve with an outlet to the inner cavity of the accumulator box 6 is provided at the liquid inlet pipe 77. A sprayer 78 is fixedly installed on the upper end face of the vertical plate 2. The storage tank 71 is connected to the sprayer 78 through the liquid outlet pipe 79. A one-way water valve with an outlet to the inner cavity of the sprayer 78 is provided at the liquid outlet pipe 79.

[0056] It should be noted that when the two upright plates 2 approach each other, since the mounting base 52 is fixedly mounted on the limiting plate 43, the distance between the top plate 53 fixedly mounted on the mounting base 52 and the upright plate 2 will increase. The push rod 54 fixedly connected to the top plate 53 will drive the piston plate 55 to move towards the front of the inner cavity of the sliding groove 21, and compress the air in the front inner cavity of the sliding groove 21 so that it enters the sealing cavity 23 through the air passage 22, thereby compressing the sealing airbag 56. At this time, the sealing airbag 56 can deform, such as... Figure 7 The sealing airbag 56 can completely cover the uneven areas on the side wall of the pier, thereby further improving the sealing between the vertical plate 2 and the side wall of the pier and ensuring the quality of concrete pouring when the pier is closed.

[0057] Since the screw rod 51 is fixedly installed on the vertical plate 2, and the thread helix angle of the screw rod 51 is greater than the equivalent friction angle of the inner cavity of the cam 76, when the two vertical plates 2 approach each other, the cam 76, which is rotated and installed on the mounting base 52, will rotate continuously. Under the elastic force of the return spring 74, it can reciprocately press the bottom plate 75 that is attached to the side wall of the cam 76. At this time, the bottom plate 75 will drive the connecting rod 73 to make the accumulator plate 72 reciprocate up and down in the inner cavity of the accumulator box 6. When the accumulator plate 72 moves to the upper part of the inner cavity of the accumulator box 6, the accumulator plate 72 can squeeze the upper cavity of the accumulator box 6, so that the effective volume of the upper part of the accumulator box 6 will continuously decrease. At this time, the pressure of the demolding oil inside will continuously increase, and finally break through the one-way valve set at the liquid outlet pipe 79 and spray out from the sprayer 78. At this time, the atomized demolding oil droplets can be scattered on the base plate 1 and the vertical plate 2. The surface of the concrete reduces the adhesion force on the base plate 1 and the upright plate 2 during the later concrete solidification, thus facilitating the demolding of the bridge piers and greatly improving the workers' work efficiency. When the accumulator plate 72 moves to the lower part of the inner cavity of the accumulator box 6, the accumulator plate 72 can squeeze the upper cavity of the accumulator box 6, so that the effective volume of the upper part of the accumulator box 6 continuously decreases. At this time, the pressure of the demolding oil inside will continuously decrease. Finally, under the pressure of the external atmospheric pressure, the demolding oil in the storage tank 71 can enter the upper part of the inner cavity of the accumulator box 6 through the inlet pipe 77 to replenish the demolding oil. Thus, with the cooperation of the demolding mechanism 7, the entire device can automatically spray demolding oil on the base plate 1 and the upright plate 2 without using a separate pump, saving costs and replacing manual spraying, greatly improving the workers' work efficiency, and is suitable for widespread promotion.

[0058] The working principle of a grout-stopping system for the closure construction of a high-pier prestressed concrete continuous rigid frame bridge:

[0059] When closing the two sections of the rigid frame bridge piers, fastening bolts 32 are fixed at the bottom of the two piers in advance. Then, a crane is used to hoist the base plate 1 and the upright plate 2 under the pier. After the mounting plate 31 fixed on the upright plate 2 is connected by the fastening bolts 32, the fastening nuts 33 are screwed onto the fastening bolts 32. In this way, the entire base plate 1 can be firmly attached to the bottom of the two sections of the pier, avoiding the leakage of grout when pouring concrete.

[0060] After the base plate 1 is fixedly installed, the threaded rod 42 is rotated by starting the dual-axis servo motor 45. Since the moving plate 44 is threadedly connected to the threaded rod 42 and the threads at both ends of the threaded rod 42 are opposite, under the limiting action of the limiting rod 41, when the threaded rod 42 rotates, it can drive the moving plates 44 on both sides to move closer to each other at the same time. Then, the vertical plate 2 fixedly installed on the moving plate 44 can clamp the side walls on both sides of the pier. Since both the base plate 1 and the vertical plate 2 are flat, the sealing between the base plate 1 and the vertical plate 2 is sufficient to ensure that the concrete slurry will not leak. At the same time, heat dissipation grooves are provided to ensure that the dual-axis servo motor 45 has a good heat dissipation effect when it works, and to ensure that it works normally in a suitable environment.

[0061] When the two upright plates 2 approach each other, since the mounting base 52 is fixedly mounted on the limiting plate 43, the distance between the top plate 53 fixedly mounted on the mounting base 52 and the upright plate 2 will increase. The push rod 54 fixedly connected to the top plate 53 will drive the piston plate 55 to move towards the front of the inner cavity of the sliding groove 21, and squeeze the air in the inner cavity of the front side of the sliding groove 21 so that it enters the sealing cavity 23 through the air passage 22, thereby squeezing the sealing airbag 56. At this time, the sealing airbag 56 can deform, such as Figure 7 The sealing airbag 56 can completely cover the uneven areas on the side wall of the pier, thereby further improving the sealing between the vertical plate 2 and the side wall of the pier and ensuring the quality of concrete pouring when the pier is closed.

[0062] Since the screw rod 51 is fixedly installed on the vertical plate 2, and the screw rod 51 has a thread helix angle greater than the equivalent friction angle of the inner cavity of the cam 76, when the two vertical plates 2 approach each other, the cam 76, which is rotatably installed on the mounting base 52, will rotate continuously. Under the elastic force of the return spring 74, it can reciprocate to press the bottom plate 75 that is attached to the side wall of the cam 76. At this time, the bottom plate 75 will drive the connecting rod 73 to make the energy storage plate 72 reciprocate up and down in the inner cavity of the pressure storage box 6.

[0063] When the accumulator plate 72 moves to the upper part of the inner cavity of the accumulator box 6, it can squeeze the upper cavity of the accumulator box 6, causing the effective volume of the upper part of the accumulator box 6 to continuously decrease. At this time, the pressure of the release oil inside will continuously increase, eventually breaking through the one-way valve set at the liquid outlet pipe 79 and spraying out from the sprayer 78. At this time, the mist-like release oil droplets can be scattered on the surface of the base plate 1 and the vertical plate 2, reducing the adsorption force on the base plate 1 and the vertical plate 2 when the concrete solidifies later, thus facilitating the workers to demold the bridge pier later and greatly improving the workers' work efficiency. When the accumulator plate 72 moves to the lower part of the inner cavity of the accumulator box 6, it can squeeze the upper cavity of the accumulator box 6, causing the effective volume of the upper part of the accumulator box 6 to continuously decrease. At this time, the pressure of the release oil inside will continuously decrease. Finally, under the pressure of the external atmospheric pressure, the release oil in the liquid storage tank 71 can enter the upper part of the inner cavity of the accumulator box 6 through the liquid inlet pipe 77 to replenish the release oil.

[0064] Thus, through the above-described process, with the cooperation of the demolding mechanism 7, the entire device can automatically spray demolding oil onto the substrate 1 and the upright plate 2 without the need for a separate pump. This saves costs and replaces manual spraying, greatly improving worker efficiency and making it suitable for widespread application.

[0065] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A high pier prestressed concrete continuous rigid frame bridge closure construction grouting stopping system, comprising a base plate (1), the upper end face of the base plate (1) is slidably installed with a vertical plate (2) on both sides, characterized in that, Also include: Piers, the base plate (1) is set in the middle of the bottom of two piers; Fastening mechanism (3), the fastening mechanism (3) is set on the left and right side wall of base plate (1), fastening mechanism (3) is used for fixing installation of base plate (1) on the pier; Clamping mechanism (4), the clamping mechanism (4) is set in the inner chamber of base plate (1), clamping mechanism (4) is used for adjusting the interval between two vertical plate (2); Sealing mechanism (5), the left and right two side inner cavity of vertical plate (2) is provided with sealing mechanism (5), sealing mechanism (5) is used for improving the sealing between vertical plate (2) and pier; Pressure storage box (6), the pressure storage box (6) is fixedly installed on the side wall of vertical plate (2), the pressure storage box (6) is filled with demolding oil; Demolding mechanism (7), the demolding mechanism (7) is set in the inner chamber of pressure storage box (6), the demolding mechanism (7) is used for making the demolding oil in pressure storage box (6) spray on the surface of base plate (1) and vertical plate (2); The clamping mechanism (4) includes a limiting rod (41) rotatably installed in the inner chamber of one side of the base plate (1), and a threaded rod (42) rotatably installed in the inner chamber of the other side of the base plate (1), both ends of the limiting rod (41) and the threaded rod (42) are rotatably installed with a limiting plate (43), a moving plate (44) is threadedly installed on the outer side wall of the threaded rod (42), the sealing mechanism (5) includes a screw rod (51) fixedly installed on the side wall of the vertical plate (2), and a mounting seat (52) fixedly installed on the limiting plate (43), a top plate (53) is fixedly installed on the outer wall of the mounting seat (52), a top rod (54) is fixedly installed on the inner wall of the top plate (53), a sliding groove (21) is arranged in the middle of the inner chamber of the vertical plate (2), sealing cavities (23) are arranged on the left and right sides of the inner chamber of the vertical plate (2), a piston plate (55) is slidably installed in the inner chamber of the sliding groove (21), the piston plate (55) is fixedly connected with the top rod (54), a sealing air bag (56) is slidably installed in the inner chamber of the sealing cavity (23), the sealing cavity (23) is connected with the sealing air bag (56) through an air duct (22) penetrating the sliding groove (21), the top rod (54) and the screw rod (51) are penetratingly connected, and the screw rod (51) and the mounting seat (52) are penetratingly connected.

2. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 1, characterized in that, The fastening mechanism (3) includes a mounting plate (31) fixedly installed on the left and right side walls of the base plate (1), and a fastening bolt (32) fixedly installed on the lower end face of the base plate (1), a fastening nut (33) is threadedly installed on the outer side wall of the fastening bolt (32).

3. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 2, characterized in that, The fastening nut (33) is attached to the outer wall of the mounting plate (31), the fastening bolt (32) and the mounting plate (31) are penetratingly connected, and the fastening mechanism (3) is provided with a plurality of fastening nuts (33).

4. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 1, characterized in that, The limiting rod (41) is in sliding connection with the moving plate (44), one side inner cavity of the base plate (1) is fixedly installed with a double-shaft servo motor (45) through a rack, the output shaft end of the double-shaft servo motor (45) is fixedly connected with the threaded rod (42), the lower end surface of the base plate (1) is provided with a heat dissipation groove at the position of the double-shaft servo motor (45), the moving plate (44) is fixedly connected with the vertical plate (2), and the threaded directions of the two ends of the threaded rod (42) are opposite.

5. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 1, characterized in that, The demolding mechanism (7) comprises a liquid storage pool (71) fixedly installed on the side wall of the vertical plate (2), the inner cavity of the pressure storage box (6) is slidably installed with a force storage plate (72), the bottom of the force storage plate (72) is fixedly installed with a connecting rod (73), the outer wall of the connecting rod (73) is woundly fixedly installed with a return spring (74), the lower end surface of the connecting rod (73) is fixedly installed with a bottom plate (75), the inner cavity of the mounting seat (52) is rotatably installed with a cam (76), the screw rod (51) is in threaded connection with the cam (76), and the thread rise angle of the screw rod (51) is greater than the equivalent friction angle of the inner cavity of the cam (76).

6. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 5, characterized in that, The two liquid storage pools (71) are located on the left and right sides of the pressure storage box (6) respectively, the two ends of the return spring (74) are fixedly connected with the end surface of the force storage plate (72) and the bottom surface of the pressure storage box (6) respectively, and the cam (76) is in close contact with the bottom plate (75).

7. The high pier prestressed concrete continuous rigid frame bridge closure construction grout stopping system according to claim 5, characterized in that, The pressure storage box (6) is in communication with the liquid storage pool (71) through a liquid inlet pipe (77), a one-way water valve with an outlet to the inner cavity of the pressure storage box (6) is arranged at the liquid inlet pipe (77), the upper end surface of the vertical plate (2) is fixedly installed with a sprayer (78), the liquid storage pool (71) is in communication with the sprayer (78) through a liquid outlet pipe (79), and a one-way water valve with an outlet to the inner cavity of the sprayer (78) is arranged at the liquid outlet pipe (79).

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