Bridge dismantling rotating hinge based on hydraulic lifting and bridge dismantling method

Abstract

The application discloses a bridge dismantling and turning hinge based on hydraulic lifting and a bridge dismantling method, which comprises a base, a hydraulic lifting system and a spherical hinge system; the hydraulic lifting system comprises a cylinder and a piston rod, and the spherical hinge system comprises an upper spherical hinge and a lower spherical hinge; the cylinder is arranged on the base, and the spherical hinge system is arranged above the piston rod; the cylinder is of a multilayer annular structure, and from inside to outside, layers are separated from each other through annular cylinder side walls, throttling holes are arranged below the annular cylinder side walls, the piston rod is an annular member and is arranged in the gap between the annular cylinder side walls, a positioning pin shaft hole is arranged in the center of the cylinder, through holes are arranged in the centers of the piston rod, the upper spherical hinge and the lower spherical hinge, and the positioning pin shaft passes through the through holes to fix the piston rod, the upper spherical hinge and the lower spherical hinge; the multilayer annular structure of the cylinder can still play a good explosion-proof role even when the structure is damaged or hydraulic oil leaks. The hydraulic lifting system is used to drive the main beam to rotate and lift, the locking time of the road under the bridge is greatly reduced, and the bridge dismantling and turning hinge can be recycled.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of bridge demolition, and particularly relates to a bridge demolition hinge based on hydraulic lifting and a bridge demolition method. BACKGROUND

[0002] In the field of bridge demolition, the traditional demolition method is manual chiseling or mechanical crushing, but the traditional bridge demolition method is time-consuming and labor-intensive, and has a large labor loss, and when there is other traffic line under the bridge, a protective shed needs to be erected for construction to ensure safety during the bridge demolition process, which causes a serious impact on the traffic under the bridge and the surrounding economic production and life.

[0003] The existing demolition technology adopts the static crushing or blasting demolition method to demolish the old bridge, which still has the above problems. A considerable part of the existing bridges have reached the service life or part of the bridges have not reached the service life, and due to various reasons, the bridges no longer meet the requirements of normal use and need to be demolished. Therefore, a new idea for bridge demolition is urgently needed to adapt to the functions of later bridge demolition. SUMMARY

[0004] The present application discloses a bridge demolition hinge based on hydraulic lifting and a bridge demolition method, which has the characteristics of lifting and horizontal rotation, can adapt to the height of most bridges, and is suitable for bridge demolition engineering.

[0005] A bridge demolition hinge based on hydraulic lifting, comprising a base, a hydraulic lifting system and a spherical hinge system; the hydraulic lifting system comprises a cylinder and a piston rod, and the spherical hinge system comprises an upper spherical hinge and a lower spherical hinge; the cylinder is arranged on the base, and the spherical hinge system is arranged above the piston rod;

[0006] The cylinder is a multi-layer annular structure, and from the inside to the outside, the layers are separated by annular cylinder side walls, the lower part of the annular cylinder side wall is provided with a throttle hole, and the hydraulic oil in the cylinder flows out through the throttle hole in the annular cylinder side wall; the piston rod is an annular member, which is divided into multiple parts from the inside to the outside and is arranged in the gap between the annular cylinder side walls; the center of the cylinder is provided with a positioning pin shaft hole, and a positioning pin shaft is vertically arranged in the center of the cylinder through the positioning pin shaft hole; the centers of the piston rod, the upper spherical hinge and the lower spherical hinge are provided with through holes, and the positioning pin shaft passes through the through holes to fix the piston rod, the upper spherical hinge and the lower spherical hinge, so that the spherical hinge rotates horizontally instead of obliquely; the lower spherical hinge is arranged at the top of the piston rod, the upper spherical hinge is placed on the lower spherical hinge and connected therewith, the positioning pin shaft fixes the upper spherical hinge and the lower spherical hinge through the through holes, and the upper spherical hinge and the lower spherical hinge can horizontally rotate around the positioning pin shaft.

[0007] Further, the base further comprises a base plate, a leveling screw and a leveling nut; the central part of the base plate is provided with a cylinder limiting hole, and the central part of the cylinder limiting hole is provided with a positioning hole; the positioning hole is a through hole; the periphery of the base plate is provided with evenly distributed leveling bolt holes; the cylinder is fixed in the cylinder limiting hole; the leveling screw passes through the leveling bolt hole and cooperates with the leveling nut to fix the base plate.

[0008] Further, the base plate is selected from a circular steel plate to ensure the working strength.

[0009] Further, the periphery of the base plate is further provided with concrete pouring holes; the concrete is poured and vibrated through the concrete pouring holes on the base plate to fill the gap between the bottom surface of the base plate and the top surface of the pier or the top surface of the rotating body platform, so that the concrete and the leveling screw jointly bear the weight of the upper structure and instability is avoided.

[0010] Preferably, the number of the leveling screws, the leveling bolt holes and the concrete pouring holes is multiple; the leveling bolt holes and the concrete pouring holes are evenly arranged around the cylinder limiting hole of the base plate.

[0011] Preferably, the bottom part of the piston rod is provided with a sealing ring to prevent hydraulic oil from flowing out of the gap between the piston rod and the side wall of the cylinder.

[0012] Further, the lower spherical hinge is arranged at the top of the piston rod, and the upper spherical hinge is arranged above the lower spherical hinge; the upper spherical hinge and the lower spherical hinge can be pivoted with the positioning pin shaft as the center.

[0013] Preferably, the outer side of the lower spherical hinge and the upper spherical hinge away from the center of the circle is provided with an annular plane to prevent instability.

[0014] Preferably, the lower spherical hinge and the piston rod are integrally formed by casting; the top surface of the lower spherical hinge is accurately controlled during the casting process, and the piston rod is ensured to be perpendicular to the bottom surface of the lower spherical hinge in the vertical state, so that the spherical hinge is horizontally rotated.

[0015] Further, in order to avoid the shear force shearing the positioning pin shaft caused by the inclined rotation of the spherical hinge during the working process, an annular plane is arranged on the outer side of the lower spherical hinge and the upper spherical hinge away from the center of the circle to prevent instability.

[0016] Preferably, the bottom part of the piston rod and the top part of the cylinder adopt a concentric circular ring structure; the piston rod is tightly matched with the annular side wall of the cylinder; the cylinder is divided into multiple layers from the inside to the outside, and a throttling hole is arranged between the layers; the preventive function of this structure is that when the cylinder at a certain position bursts or the sealing ring at the bottom part of the piston rod fails to cause hydraulic oil leakage, the remaining part still has good working ability; even if the hydraulic lifting system cannot support the bridge rotating body alone, the piston rod will not instantaneously have a large displacement but will be slowly lowered to prevent the rotating body structure from falling to cause collision damage or even overturning.

[0017] Further, due to the different heights of each bridge, the height of the bridge dismantling hinge can be designed to be lower, and the extension area of the piston rod bottom and the oil cylinder top is lengthened, so that the bridge dismantling hinge is more universal.

[0018] A bridge dismantling method using the above-mentioned bridge dismantling hinge based on hydraulic lifting, comprising the following steps:

[0019] S1: Mark the rotation center of the main beam on the rotation platform under the main beam, confirm that the center of the base plate coincides with the rotation center of the main beam through the base plate positioning hole, vertically bury the leveling screw in the rotation platform of the main beam according to the leveling screw hole of the base plate, and screw on the leveling nut; install the oil cylinder, piston rod, lower spherical hinge and upper spherical hinge components, after installation, adjust the leveling nut to the appropriate position, support the formwork around the base plate, pour and vibrate the concrete through the concrete pouring hole, and fill the gap between the bottom surface of the base plate and the top surface of the pier or the rotation platform;

[0020] S2: Control the hydraulic lifting system, adjust the pressure of the hydraulic lifting system, and support the upper spherical hinge, the upper spherical hinge is in contact with the main beam rotation, when the bridge dismantling hinge can bear the weight of the main beam rotation, remove the original support of the main beam rotation, and rotate the main beam to the appropriate position;

[0021] S3: After the main beam rotation is dismantled, the structure except the base plate of the bridge dismantling hinge can be dismantled and reused.

[0022] The beneficial effects of the present application are:

[0023] 1. The hydraulic lifting system is used to control the lifting of the main beam rotation, and then the main beam rotation is dismantled, which greatly reduces the blocking time of the road under the bridge, and the bridge dismantling hinge can be reused after the main beam rotation is dismantled;

[0024] 2. The piston rod and the oil cylinder adopt a multi-layer concentric ring structure that cooperates with each other, so that even if the oil cylinder is damaged or the hydraulic oil leaks at a certain position, the lifting function for dismantling the bridge can still be achieved, even if the hydraulic lifting system cannot support the bridge rotation alone, the piston rod will not instantaneously displace greatly but will slowly decrease, preventing the rotation structure from falling and causing collision damage or even overturning;

[0025] 3. By adjusting the matching length of the piston rod bottom and the oil cylinder top of the bridge dismantling hinge, the adaptation range of the bridge dismantling hinge is expanded;

[0026] 4. The components of the bridge dismantling hinge except the base plate can be dismantled and reused repeatedly, so that the economy of the device is maximized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The schematic diagram of the overall arrangement of the bridge dismantling rotating hinge device;

[0028] Figure 2 The schematic diagram of the rotating hinge cross-sectional structure of the bridge;

[0029] Figure 3 The schematic diagram of the base plate structure;

[0030] Figure 4 The schematic diagram of the oil cylinder structure from the top.

[0031] In the figure: 1, base plate; 2, leveling screw; 3, leveling nut; 4, leveling bolt hole; 5, concrete pouring hole; 6, oil cylinder; 7, piston rod; 8, lower spherical hinge; 9, upper spherical hinge; 10, positioning pin shaft; 11, throttle hole; 12, annular oil cylinder side wall; 13, positioning hole; 14, hydraulic oil inlet; 15, hydraulic oil outlet; 16, sealing ring; 17, oil cylinder limiting hole. DETAILED DESCRIPTION

[0032] The present application will be described below in conjunction with the accompanying drawings:

[0033] The present application provides a kind of bridge rotating hinge based on hydraulic lifting, as Figure 1 The schematic diagram of the rotating hinge cross-sectional structure of the bridge; The schematic diagram of the base plate structure; The schematic diagram of the oil cylinder structure from the top. In the figure: 1, base plate; 2, leveling screw; 3, leveling nut; 4, leveling bolt hole; 5, concrete pouring hole; 6, oil cylinder; 7, piston rod; 8, lower spherical hinge; 9, upper spherical hinge; 10, positioning pin shaft; 11, throttle hole; 12, annular oil cylinder side wall; 13, positioning hole; 14, hydraulic oil inlet; 15, hydraulic oil outlet; 16, sealing ring; 17, oil cylinder limiting hole. The present application provides a kind of bridge rotating hinge based on hydraulic lifting, as shown in a kind of bridge rotating hinge based on hydraulic lifting, including base, hydraulic lifting system and spherical hinge system;The hydraulic lifting system includes oil cylinder 6, piston rod 7, the oil cylinder 6 is provided with four annular oil cylinder side wall 12, the annular oil cylinder side wall 12 below is equipped with throttle hole 11, the oil cylinder 6 inside hydraulic oil passes through the throttle hole 11 on annular oil cylinder side wall 12 and flows out, control piston rod 7 lift, the piston rod 7 central is equipped with through-hole, and the bottom of piston rod 7 is annular structure and is closely matched with oil cylinder 6 and is connected, controls the movement of bridge vertical direction;The spherical hinge system includes upper spherical hinge 9 and lower spherical hinge 8, the lower spherical hinge 8 is arranged in the top of piston rod 7 and can be integrally cast with piston rod, and upper spherical hinge 9 is placed on lower spherical hinge 8 and is matched with it and is connected, the upper spherical hinge 9 and lower spherical hinge 8 central are equipped with through-hole, the positioning pin shaft 10 is fixed piston rod 7, upper spherical hinge 9 and lower spherical hinge 8 by through-hole, and the upper spherical hinge 9 and lower spherical hinge 8 can be with positioning pin shaft 10 as center and carry out flat rotation.

[0034] Wherein base plate 1 selects circular steel plate to ensure working strength;Between lower spherical hinge 8 and upper spherical hinge 9, the outer side of far direction from the center of circle is provided with annular plane to prevent instability in the process of rotation.

[0035] The technical effect of the above scheme is: the main girder rotating body is lifted by using hydraulic control, and then the main girder rotating body is destroyed and dismantled, which greatly reduces the blocking time of the road under the bridge, and after the main girder rotating body is destroyed and dismantled, the bridge rotating hinge can be recycled again.

[0036] As Figure 2 AndFigure 4 As shown, the piston rod 7 and the oil cylinder 6 adopt a concentric ring structure, the piston rod 7 is integrally cast with the lower spherical hinge 8, the bottom of the piston rod 7 and the bottom of the recess of the oil cylinder 6 can be reserved a certain distance for setting the throttle hole 11, the bottom of the piston rod 7 is provided with a sealing ring 16 to prevent hydraulic oil from flowing out from the gap between the piston rod 7 and the annular oil cylinder side wall 12;

[0037] The outer side of the oil cylinder 6 is provided with a hydraulic oil inlet 14 and a hydraulic oil outlet 15, which can be freely opened or closed; the oil cylinder 6 is divided into multiple layers from inside to outside, and the layers are provided with throttle holes 11, and the preventive function of this structure is that when the oil cylinder 6 at a certain position bursts or the bottom sealing ring 16 of the piston rod 7 fails to cause hydraulic oil leakage, it still has good working ability.

[0038] As shown in Figure 1 and Figure 3 As shown, it is a schematic diagram of the installation structure of the base plate 1, the base includes the base plate 1, the leveling screw rod 2 and the leveling nut, the leveling screw rod 2 passes through the leveling bolt hole 4 on the base plate 1, and cooperates with the leveling nut to fix the base plate 1; the center of the base plate 1 is provided with an oil cylinder limiting hole 17 and a positioning hole 13, wherein the oil cylinder limiting hole 17 has a certain depth, the positioning hole 13 is a through hole, the oil cylinder 6 can be fixed in the oil cylinder limiting hole 17 by bolt connection, and the base plate 1 is provided with a concrete pouring hole 5 in addition to the leveling bolt hole 4, the number of the leveling bolt hole 4 and the concrete pouring hole 5 is four, and they are uniformly distributed around the base plate.

[0039] By aligning the positioning hole 13 in the base plate 1 with the center of rotation of the main beam, the base plate 1 is adjusted to the horizontal position by adjusting the leveling nut, the formwork is supported around the base plate 1, the concrete is poured and vibrated through the concrete pouring hole 5 on the base plate 1, and the gap between the bottom surface of the base plate 1 and the top surface of the pier or the platform of the rotating body is filled, so that the concrete and the leveling screw rod 2 jointly bear the weight of the upper structure to avoid instability. After the structure is installed under the main beam, the hydraulic lifting system is started to adjust the pressure, the height of the upper spherical hinge is lifted until the rotating hinge can bear the weight of the main beam, and then the original support or support is removed, and then the rotating body and the related work are carried out. After the main beam is rotated and removed, the parts of the removal rotating hinge except the base plate 1 can be removed and reused, so that the economy of the device is maximized.

[0040] According to the above embodiment, the bridge removal method provided by the application is:

[0041] The rotation center of the main beam is marked on the swivel platform under the main beam, the center of the base plate is confirmed to coincide with the rotation center of the main beam through the positioning hole of the base plate, the leveling screw is vertically buried in the swivel platform of the main beam according to the reserved hole pattern of the base plate, the leveling screw 2 is screwed with the leveling nut 3, the components of the oil cylinder 6, the piston rod 7, the lower spherical hinge 8 and the upper spherical hinge 9 are installed according to the positioning pin shaft 10, after the installation is completed, the leveling nut 3 is adjusted to make the base plate 1 horizontal, the formwork is supported around the base plate 1, the concrete is poured and vibrated through the concrete pouring hole 5, and the gap between the bottom surface of the base plate 1 and the top surface of the pier or the swivel platform is filled; the hydraulic lifting system is controlled, the pressure of the hydraulic lifting system is adjusted, the oil cylinder hydraulic oil inlet 14 is opened, at this time the hydraulic oil outlet 15 is in a closed state, the hydraulic oil in the oil cylinder 6 flows into the space at the bottom of the piston rod 7 and the recessed part of the oil cylinder 6 through the throttle hole 11 on the annular oil cylinder side wall 12; the hydraulic oil props up the piston rod 7, the piston rod 7 drives the upper spherical hinge 9 to move vertically upward along the positioning pin shaft 10 until the main beam swivel is propped up, when the bridge dismantling swivel can bear the weight of the main beam swivel, the original support of the main beam swivel is removed, and the main beam is rotated to a suitable position; after the main beam swivel is rotated and the construction is completed, the hydraulic oil outlet 15 is opened, when the hydraulic oil flows out completely, the hydraulic lifting system is closed, and after the main beam swivel is removed, the structures of the bridge dismantling swivel except the base plate can be removed and reused.

[0042] The above description is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A hydraulic lift based bridge demolition swivel characterized in that, The base, the hydraulic lifting system and the ball hinge system; the hydraulic lifting system comprises a cylinder and a piston rod, and the ball hinge system comprises an upper ball hinge and a lower ball hinge; the cylinder is arranged on the base, and the ball hinge system is arranged above the piston rod; The cylinder is a multi-layer annular structure, and from inside to outside, the layers are separated by annular cylinder side walls, the lower part of the annular cylinder side wall is provided with a throttle hole, and the hydraulic oil in the cylinder flows out through the throttle hole on the annular cylinder side wall; the piston rod is an annular member, which is divided into multiple parts from inside to outside and is arranged in the gap between the annular cylinder side walls; The center of the cylinder is provided with a positioning pin shaft hole, and the positioning pin shaft is vertically arranged in the center of the cylinder through the positioning pin shaft hole; the centers of the piston rod, the upper ball hinge and the lower ball hinge are provided with through holes, and the positioning pin shaft passes through the through holes to fix the piston rod, the upper ball hinge and the lower ball hinge, so that the ball hinge rotates horizontally instead of obliquely.

2. A hydraulic lift based bridge demolition swivel according to claim 1, characterized in that, The base further comprises a base plate, leveling screws and leveling nuts; the center of the base plate is provided with a cylinder limiting hole, and the center of the cylinder limiting hole is provided with a positioning hole; the positioning hole is a through hole; the cylinder is fixed in the cylinder limiting hole; the periphery of the base plate is provided with evenly distributed leveling bolt holes; the leveling screws pass through the leveling bolt holes and cooperate with the leveling nuts to fix the base plate.

3. A hydraulic lift based bridge demolition swivel according to claim 2, characterized in that, The base plate is a circular steel plate.

4. A hydraulic lift based bridge demolition swivel according to claim 3, characterized in that, The periphery of the base plate is further provided with concrete pouring holes.

5. A hydraulic lift based bridge demolition swivel according to claim 4, characterized in that, The number of the leveling screws, the leveling bolt holes and the concrete pouring holes is multiple; the leveling bolt holes and the concrete pouring holes are evenly arranged around the cylinder limiting hole.

6. A hydraulic lift based bridge demolition swivel according to claim 1, characterized in that, The bottom of the piston rod is provided with a sealing ring to prevent hydraulic oil from flowing out from the gap between the piston rod and the annular cylinder side wall.

7. A hydraulic lift based bridge demolition swivel according to claim 1, characterized in that, The lower ball hinge is arranged at the top of the piston rod, and the upper ball hinge is placed on the lower ball hinge; the upper ball hinge and the lower ball hinge rotate horizontally around the positioning pin shaft.

8. A hydraulic lift based bridge demolition swivel according to claim 7, characterized in that, The lower ball hinge and the piston rod are integrally formed by casting.

9. A hydraulic lift based bridge demolition swivel according to claim 1, characterized in that, The outer side of the lower ball hinge and the upper ball hinge away from the center of the circle is provided with an annular plane to prevent instability.

10. A method of bridge demolition using the hydraulic lift based bridge demolition swivel according to any one of claims 2-5, characterized in that, The method comprises the following steps: S1: mark the rotation center of the main beam on the rotation platform under the main beam; confirm that the center of the base plate coincides with the rotation center of the main beam through the base plate positioning hole; vertically bury the leveling screws in the leveling bolt holes of the base plate on the rotation platform of the main beam, and screw on the leveling nuts; install the cylinder, the piston rod, the lower ball hinge and the upper ball hinge; after the installation is completed, adjust the leveling nuts to the appropriate position, support the mold around the base plate, pour and vibrate the concrete through the concrete pouring holes, and fill the gap between the bottom surface of the base plate and the top surface of the pier or the rotation platform; S2: control the hydraulic lifting system, adjust the pressure of the hydraulic lifting system, and support the upper ball hinge; when the bridge demolition hinge can bear the weight of the main beam rotation, remove the original support of the main beam rotation, and rotate the main beam to the appropriate position; S3: after the completion of the main beam rotation demolition, remove the structure except the base plate of the bridge demolition hinge and utilize it again.

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