Installation equipment for large-span high-speed steel box girder

Abstract

The invention relates to installation equipment of a large-span high-speed steel box girder, and belongs to the technical field of steel box girder installation equipment.The installation equipment of the large-span high-speed steel box girder is provided with a pressing block and a deviation rectifying block, the pressing block extends out of a deviation rectifying shell in the initial state, and the deviation rectifying block retracts into the deviation rectifying shell in the initial state; the steel box girder presses the pressing block to move towards the interior of the deviation rectifying shell, along with movement of the pressing block, the pressing block controls hydraulic oil to drive the deviation rectifying block to slide, and then the deviation rectifying block extends out of the deviation rectifying shell. And the two deviation rectifying blocks also extend out of the deviation rectifying shell, and the two deviation rectifying blocks are jointly attached to the steel box girder at the same time to limit the position of the steel box girder, so that the actual position of the steel box girder placed on the pier and the position of the steel box girder preset to be placed on the pier are located on the same straight line.

Description

Technical Field

[0001] The invention belongs to the technical field of steel box girder installation equipment, and in particular relates to installation equipment for a large-span high-speed steel box girder. Background Art

[0002] Many existing bridges use steel box girder structures. During the construction process, the assembled steel box girders need to be pushed up to the designated position of the bridge piers. During the process of the steel box girder being pushed up, the position of the steel box girder may shift. Therefore, for the installation of the steel box girder, correction equipment is often required to ensure that the steel box girder will not shift during the process of being pushed up.

[0003] For example, the utility model patent with patent authorization announcement number: CN217149920U, which involves a lateral correction structure of a steel box girder. The steel box girder includes a plurality of transverse webs, and the correction structure includes: a movable support, including a fixed base, reaction columns respectively located at both ends of the fixed base and fixedly connected to the jacking support, hydraulic jacks respectively fixedly connected to the reaction columns, and a movable base; the fixed base is fixedly connected to the jacking support, and a movable groove extending along the longitudinal direction of the steel box girder is provided inside; the movable base is movably connected to the fixed base along the extending direction of the movable groove, and the two ends are respectively abutted against two hydraulic jacks; a plurality of correction supports are fixedly connected to the movable base, and each correction support is respectively abutted against the transverse web.

[0004] Based on the search of patent authorization announcement numbers and the shortcomings found therein: For bridge piers installed at sea, there are undercurrents on the seabed that impact the piers, causing the bottom of the piers to vibrate. As the vibration at the bottom of the piers is transmitted to the top of the piers, the amplitude of the vibration at the top of the piers increases. Due to the vibration at the top of the piers, there is a deviation between the position of the steel box girder placed on the pier and the pre-conceived position of the steel box girder placed on the pier. Summary of the invention

[0005] In order to solve the problem that for bridge piers set up at sea, there is a situation where undercurrents on the seabed impact the bridge piers, causing vibrations at the bottom of the piers, and as the vibrations at the bottom of the piers are transmitted to the top of the piers, the amplitude of the vibrations at the top of the piers increases; due to the vibrations at the top of the piers, there is a problem that the position of the steel box girder placed on the pier deviates from the pre-conceived position of the steel box girder placed on the piers, the present invention provides an installation device for a large-span high-speed steel box girder.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A device for installing a large-span high-speed steel box girder comprises two correcting devices, which are symmetrically and detachably arranged at the two ends of a bridge pier, and the correcting devices comprise a correcting shell, a pressing block, a correcting block and hydraulic oil. A pressing groove and a sliding groove are respectively provided on the top and side walls of the correcting shell, and the pressing groove and the sliding groove are communicated with each other. The pressing block can be slidably and sealedly arranged in the pressing groove, and the correcting block can be slidably and sealedly arranged in the sliding groove. A hydraulic space is formed between the pressing groove and the sliding groove, and the hydraulic oil is filled in the hydraulic space. The two correcting blocks can lock or release their abutting and fitting relationship with the steel box girder.

[0007] As a preferred technical solution of the present invention, the correction device further includes a reset spring, which is arranged in the sliding groove, and the two ends of the reset spring are respectively connected to the correction shell and the correction block.

[0008] As a preferred technical solution of the present invention, the correction device also includes an expansion spring and an expansion block. The correction shell is provided with an expansion groove, and the expansion groove is communicated with the hydraulic space. The expansion block is slidably and sealedly arranged in the expansion groove. The expansion spring is arranged in the expansion groove. Both ends of the expansion spring are respectively connected to the correction shell and the expansion block. The expansion block can lock or release its fitting relationship with the bottom surface of the correction block.

[0009] As a preferred technical solution of the present invention, when the correction block is fitted to the steel box girder, the top surface of the pressing block is spaced a certain distance from the top surface of the correction shell, and viewed from top to bottom, the correction block and the expansion block do not overlap each other.

[0010] As a preferred technical solution of the present invention, the pressing block includes a pressing shell and an expansion shell, the pressing shell and the expansion shell are arranged in close contact with each other, the tops of the pressing shell and the expansion shell are both inclined, the vertical height of the pressing shell and the vertical height of the expansion shell increase along the sliding direction of the steel box girder, the lowest point of the vertical height of the pressing shell is flush with the top surface of the correcting shell, the lowest point of the vertical height of the expansion shell and the highest point of the vertical height of the pressing shell are at the same height, and when the correcting block is in close contact with the steel box girder, the pressing shell shrinks into the correcting shell.

[0011] As a preferred technical solution of the present invention, the inclination angle of the top of the expansion shell gradually increases along the sliding direction of the steel box girder.

[0012] As a preferred technical solution of the present invention, the elastic modulus of the expansion spring is greater than the elastic modulus of the return spring.

[0013] As a preferred technical solution of the present invention, the correction block includes an internally hollow fitting shell, a sliding assembly and a sliding spring. The fitting shell can be slidably and sealedly arranged in the sliding groove, and the two ends of the reset spring are respectively connected to the correction shell and the fitting shell. The sliding assembly is slidably arranged in the fitting shell, and the two ends of the sliding spring are respectively connected to the sliding assembly and the fitting shell. The sliding assembly can lock or release its fitting relationship with the steel box girder.

[0014] As a preferred technical solution of the present invention, the sliding assembly includes a sliding block and a plurality of sliding balls. The sliding block can be slidably arranged in the fitting shell. The side wall of the sliding block is provided with a sliding groove. The ends of the sliding groove are connected to each other. The plurality of sliding balls can be slidably arranged in the sliding groove. Two adjacent sliding balls are arranged to fit each other. The common cross-section of the plurality of sliding balls located on the sliding block close to the end face of the steel box girder can lock or release the matching relationship between them and the end face of the fitting shell close to the steel box girder in the same vertical plane.

[0015] As a preferred technical solution of the present invention, the two correcting devices form a group of correcting units, and the correcting units are arranged in several groups. The several groups of correcting units are arranged on the piers at equal intervals along the setting direction of the piers, and the last group of correcting units is arranged at the end of the pier along the sliding direction of the steel bridge.

[0016] The beneficial effects of the present invention are: The scheme is provided with a pressing block and a correcting block. The pressing block is initially extended out of the correcting shell, and the correcting block is initially retracted in the correcting shell. When the steel box girder is placed on the bridge pier from top to bottom, the steel box girder presses the pressing block to move toward the inside of the correcting shell. With the movement of the pressing block, the pressing block controls the hydraulic oil to drive the correcting block to slide, thereby realizing the correcting block extending out of the correcting shell. It should be noted that when the pressing block of the steel box girder is completely immersed in the interior of the correcting shell, the two correcting blocks are also extended out of the correcting shell, and the two correcting blocks are simultaneously and jointly with the steel box girder. The beam fitting setting limits the position of the steel box girder, so that the actual position of the steel box girder placed on the pier is in the same straight line as the preset position of the steel box girder placed on the pier, which solves the problem that for piers set at sea, undercurrents on the seabed impact the piers, causing vibrations at the bottom of the piers. As the vibrations at the bottom of the piers are transmitted to the top of the piers, the amplitude of vibrations at the top of the piers increases. Due to the vibrations at the top of the piers, there is a problem of deviation between the position of the steel box girder placed on the pier and the pre-conceived position of the steel box girder placed on the piers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is an overall diagram of an installation device for a large-span high-speed steel box girder of the present invention; Figure 2 A schematic diagram of a pressing block of a large-span high-speed steel box girder installation device of the present invention; Figure 3 It is a cross-sectional view of a deviation-correcting shell of an installation device for a large-span high-speed steel box girder of the present invention; Figure 4 The present invention is a schematic diagram of a sliding assembly of a large-span high-speed steel box girder installation device.

[0019] Description of main symbols In the figure: 1. Correction shell; 2. Pressing block; 201. Pressing shell; 202. Expansion shell; 3. Correction block; 301. Fitting shell; 4. Hydraulic oil; 5. Return spring; 6. Expansion spring; 7. Expansion block; 8. Sliding assembly; 801. Sliding block; 802. Sliding ball; 9. Sliding spring. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-4The present embodiment provides an installation device for a large-span high-speed steel box girder, comprising two correcting devices, which are symmetrically and detachably arranged at the two ends of the pier, respectively, and the correcting devices comprise a correcting shell 1, a pressing block 2, a correcting block 3 and hydraulic oil 4, and the top and side walls of the correcting shell 1 are respectively provided with a pressing groove and a sliding groove. It is worth noting that the top surface of the correcting shell 1 of the present scheme is in the same plane as the top surface of the pier; the pressing groove and the sliding groove are connected to each other, and the pressing block 2 can slide closely. The deflection-correcting block 3 is slidably and sealedly arranged in the pressing groove, and a hydraulic space is formed between the pressing groove and the sliding groove. The hydraulic oil 4 is filled in the hydraulic space, and the two deflection-correcting blocks 3 can lock or release their abutting and fitting relationship with the steel box girder; in this scheme, a pressing block 2 and a deflection-correcting block 3 are arranged, and the initial state of the pressing block 2 extends out of the deflection-correcting shell 1, and the initial state of the deflection-correcting block 3 is retracted in the deflection-correcting shell 1. When the steel box girder is placed on the bridge pier from top to bottom, the steel box girder presses the pressing block 2 moves toward the inside of the correction shell 1, and with the movement of the pressing block 2, the pressing block 2 controls the hydraulic oil 4 to drive the correction block 3 to slide, thereby realizing that the correction block 3 extends out of the correction shell 1. It should be noted that when the steel box girder compresses the pressing block 2 and is completely immersed in the interior of the correction shell 1, the two correction blocks 3 also complete extending out of the correction shell 1, and the two correction blocks 3 are simultaneously and jointly arranged in a fit with the steel box girder to limit the position of the steel box girder, so that the actual position of the steel box girder placed on the pier is in the same straight line as the position of the steel box girder preset on the pier, which solves the problem that for the piers set at sea, there is an undercurrent on the seabed impacting the piers, causing the bottom of the piers to vibrate, and as the vibration of the bottom of the piers is transmitted to the top of the piers, the amplitude of the vibration of the top of the piers increases; due to the vibration of the top of the piers, there is a problem that the position of the steel box girder placed on the piers deviates from the position of the steel box girder placed on the piers in advance.

[0022] Furthermore, the correction device of the present scheme also includes a reset spring 5, which is arranged in the sliding groove, and the two ends of the reset spring 5 are respectively connected to the correction shell 1 and the correction block 3. Such a setting can ensure that the correction device can actively return to its original position after being removed from the bridge pier.

[0023] According to the above embodiment, the present solution only places the steel box girder on the bridge pier, which only ensures that the central axis of the steel box girder and the central axis of the bridge pier are on the same vertical plane, and does not ensure that the position of the steel box girder reaches the preset designated position of the bridge pier. In order to ensure that the steel box girder can be moved to the preset designated position of the bridge pier, a jacking device is usually used to push the steel box girder placed on the bridge pier to the designated position of the bridge pier. However, since the bridge pier of the present solution is set at sea, the undercurrent on the seabed will continuously impact the bridge pier, causing the bottom of the bridge pier to sway left and right. In the case of shaking, especially the vibration caused by the bottom of the pier is transmitted to the top of the pier, the vibration amplitude of the top of the pier will be increased. In this case, when the jacking device pushes the steel box girder, the position of the pier will continuously move relative to the position of the steel box girder. Since the correction device provided in this scheme will limit the position between the steel box girder and the pier, therefore, in actual situations, the correction device that limits the position of the pier and the steel box girder will be damaged due to the relative movement between the pier and the steel box girder. Based on this, in order to avoid this situation, the correction device of this scheme also includes Including expansion spring 6 and expansion block 7, the correction shell 1 is provided with an expansion groove, the expansion groove is communicated with the hydraulic space, the expansion block 7 can be slidably sealed and arranged in the expansion groove, the expansion spring 6 is arranged in the expansion groove, the two ends of the expansion spring 6 are respectively connected to the correction shell 1 and the expansion block 7, the expansion block 7 can lock or release its fitting relationship with the bottom surface of the correction block 3. Through such a setting, when the pressing block 2 of the present scheme descends, it will drive the correction block 3 to move in the direction close to the steel box beam until the correction block 3 extends to the specified position, so that the correction block 3 is pressed against the steel box beam. position adjustment; at this time, the pressing block 2 has not been completely immersed in the correcting shell 1. As the height of the pressing block 2 continues to drop, the hydraulic oil 4 in the hydraulic space will press the expansion block 7, so that the volume of the hydraulic space increases, and then the correcting block 3 extended to the specified position will retract a certain length into the correcting shell 1, so that there is a certain distance between the correcting block 3 and the steel box girder, and the distance is greater than the maximum relative displacement between the pier and the steel box girder. Through such a setting, it is ensured that the correcting device will not be damaged after the relative displacement between the pier and the steel box girder occurs.

[0024] It is worth explaining that, in the present scheme, when the deviation-correcting block 3 is fitted with the steel box girder, the top surface of the pressing block 2 is spaced a certain distance from the top surface of the deviation-correcting shell 1, and viewed from top to bottom, the deviation-correcting block 3 and the expansion block 7 do not overlap with each other; while in the initial state, that is, when the pressing block 2 has not been pressed, viewed from top to bottom, the deviation-correcting block 3 and the expansion block 7 overlap with each other. Therefore, when the pressing block 2 descends, only the deviation-correcting block 3 moves, while the expansion block 7 does not move because it has not yet been connected to the hydraulic space.

[0025] Specifically, the pressing block 2 of this solution includes a pressing shell 201 and an expansion shell 202, which are arranged to fit each other, and the tops of the pressing shell 201 and the expansion shell 202 are inclined, and the vertical heights of the pressing shell 201 and the expansion shell 202 increase along the sliding direction of the steel box girder, and the lowest point of the vertical height of the pressing shell 201 is flush with the top surface of the correction shell 1, and the lowest point of the vertical height of the expansion shell 202 is at the same height as the highest point of the vertical height of the pressing shell 201, and when the correction block 3 fits the steel box girder, the pressing shell 201 shrinks into the correction shell 1. Through such an arrangement, the pressing block 2 along the way can also be pressed during the sliding process of the steel box girder.

[0026] It should also be noted that, in this solution, the inclined end of the top of the pressing shell 201 gradually increases along the sliding direction of the steel box girder; and the inclination angle of the top of the expansion shell 202 gradually increases along the sliding direction of the steel box girder. Through such a setting, when the pressing shell 201 is pressed into the correction shell 1, the correction block 3 extends to the specified position. At the same time, from top to bottom, the projection area of ​​the correction block 3 and the projection area of ​​the expansion block 7 do not overlap each other; and when the steel box girder continues to move, the steel box girder begins to press the expansion shell 202. Since the inclination angle of the top of the expansion shell 202 gradually increases along the sliding direction of the steel box girder, as the steel box girder moves, the oil pressure of the hydraulic oil 4 in the hydraulic space will increase, and the growth rate of the oil pressure of the hydraulic oil 4 will continue to increase, which will push the expansion block 7 to move toward the bottom of the expansion groove, and the movement speed of the expansion block 7 will continue to increase. Therefore, when When the expansion shell 202 is completely retracted into the correction shell 1, the hydraulic oil 4 oil pressure in the hydraulic space reaches the maximum, and the movement speed of the expansion block 7 reaches the fastest, that is, when the expansion shell 202 is retracted into the correction shell 1, the expansion block 7 continues to move toward the bottom of the expansion groove until the movement speed of the expansion block 7 is zero; therefore, there will be a situation where the volume of the hydraulic space becomes larger, and then the hydraulic oil 4 oil pressure in the hydraulic space will drop sharply, and then the expansion block 7 will move toward the top of the expansion groove again. At the same time, the correction block 3 will shrink a certain distance into the correction shell 1 due to the decrease in the hydraulic oil 4 oil pressure in the hydraulic space, until the volume of the hydraulic space returns to normal. It should be noted that although the elastic modulus of the expansion spring 6 of this scheme is greater than the elastic modulus of the reset spring 5, due to the friction resistance between the correction block 3 and the correction shell 1, the correction block 3 will remain in place after shrinking a certain distance into the correction shell 1, and will not be re-fitted with the steel box girder. Such an arrangement enables the correction block 3 to actively release its fitting relationship with the steel box girder after adjusting the position of the steel box girder, so that it maintains a certain distance from the steel box girder.

[0027] Furthermore, in order to ensure that the correction block 3 can still assist in limiting the sliding direction of the steel box girder after the fitting setting with the steel box girder is released, the correction block 3 of this scheme includes an internal hollow fitting shell 301, a sliding component 8 and a sliding spring 9. The fitting shell 301 can be slidably sealed in the sliding groove, and the two ends of the reset spring 5 are respectively connected to the correction shell 1 and the fitting shell 301. The sliding component 8 is slidably set in the fitting shell 301, and the two ends of the sliding spring 9 are respectively connected to the sliding component 8 and the fitting shell 301. The sliding component 8 can lock or release its fitting relationship with the steel box girder; after the sliding component 8 is fitted with the steel box girder, the sliding of the steel box girder is assisted, and due to the setting of the sliding spring 9, even if the bridge pier is displaced relative to the steel box girder, it can ensure that the sliding component 8 is fitted with the steel box girder without damaging the sliding component 8.

[0028] Specifically, the sliding assembly 8 of the present scheme includes a sliding block 801 and a plurality of sliding balls 802. The sliding block 801 can be slidably arranged in the fitting shell 301. The side wall of the sliding block 801 is provided with a sliding groove, and the ends of the sliding groove are connected to each other. The plurality of sliding balls 802 can be slidably arranged in the sliding groove. Two adjacent sliding balls 802 are arranged to fit each other. The common cross-section of the plurality of sliding balls 802 located on the sliding block 801 close to the end face of the steel box beam can lock or release the matching relationship between the plurality of sliding balls 802 and the end face of the fitting shell 301 close to the steel box beam, which are in the same vertical plane. It is worth noting that the present scheme reduces the friction loss between the sliding assembly 8 and the steel box beam by providing a plurality of sliding balls 802 to cooperate with the steel box beam, thereby further improving the service life of the sliding assembly 8.

[0029] It should also be noted that, as the steel box girder moves, the piers and the steel box girder will also vibrate relative to each other. In order to ensure that the central axis of the steel box girder is as flush as possible with the central axis of the pier during the movement of the steel box girder, and that after the steel box girder reaches the specified position of the pier, the central axis of the steel box girder and the central axis of the pier are in the same vertical plane, the two correction devices in this scheme are a group of correction units, and the correction units are arranged in several groups. Several groups of correction units are arranged on the piers at equal intervals along the setting direction of the piers, and the last group of correction units is arranged at the end of the pier along the sliding direction of the steel bridge.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An installation device for a large-span high-speed steel box girder, characterized in that: It includes two correcting devices, which are symmetrically and detachably arranged at the two ends of the pier, and the correcting devices include a correcting shell, a pressing block, a correcting block and hydraulic oil. The top and side walls of the correcting shell are respectively provided with a pressing groove and a sliding groove, and the pressing groove and the sliding groove are communicated with each other. The pressing block can be slidably and sealedly arranged in the pressing groove, and the correcting block can be slidably and sealedly arranged in the sliding groove. A hydraulic space is formed between the pressing groove and the sliding groove, and the hydraulic oil is filled in the hydraulic space. The two correcting blocks can lock or release their abutting relationship with the steel box girder.

2. The installation device for a large-span high-speed steel box girder according to claim 1 is characterized in that: The deviation-correcting device further comprises a return spring, which is arranged in the sliding groove, and two ends of the return spring are respectively connected to the deviation-correcting housing and the deviation-correcting block.

3. The installation device for a large-span high-speed steel box girder according to claim 2 is characterized in that: The correction device also includes an expansion spring and an expansion block. The correction shell is provided with an expansion groove, which is communicated with the hydraulic space. The expansion block is slidably and sealedly arranged in the expansion groove. The expansion spring is arranged in the expansion groove. Both ends of the expansion spring are respectively connected to the correction shell and the expansion block. The expansion block can lock or release its fitting relationship with the bottom surface of the correction block.

4. The installation device for a large-span high-speed steel box girder according to claim 3 is characterized in that: When the deflection-correcting block is fitted to the steel box girder, the top surface of the pressing block is spaced a certain distance from the top surface of the deflection-correcting shell, and viewed from top to bottom, the deflection-correcting block and the expansion block do not overlap each other.

5. The installation device for a large-span high-speed steel box girder according to claim 3 is characterized in that: The pressing block includes a pressing shell and an expansion shell, the pressing shell and the expansion shell are arranged in close contact with each other, the tops of the pressing shell and the expansion shell are both inclined, the vertical heights of the pressing shell and the vertical heights of the expansion shell increase along the sliding direction of the steel box girder, the lowest point of the vertical height of the pressing shell is flush with the top surface of the correcting shell, and the lowest point of the vertical height of the expansion shell is at the same height as the highest point of the vertical height of the pressing shell, and when the correcting block is in close contact with the steel box girder, the pressing shell shrinks into the correcting shell.

6. The installation device for a large-span high-speed steel box girder according to claim 5, characterized in that: The inclination angle of the top of the expansion shell gradually increases along the sliding direction of the steel box girder.

7. The installation device for a large-span high-speed steel box girder according to claim 3, characterized in that: The elastic modulus of the expansion spring is greater than the elastic modulus of the return spring.

8. The installation device for a large-span high-speed steel box girder according to claim 2, characterized in that: The correction block includes an internally hollow fitting shell, a sliding assembly and a sliding spring. The fitting shell can be slidably and sealedly arranged in the sliding groove, and the two ends of the reset spring are respectively connected to the correction shell and the fitting shell. The sliding assembly is slidably arranged in the fitting shell, and the two ends of the sliding spring are respectively connected to the sliding assembly and the fitting shell. The sliding assembly can lock or release its fitting relationship with the steel box girder.

9. The installation device for a large-span high-speed steel box girder according to claim 8, characterized in that: The sliding assembly includes a sliding block and a plurality of sliding balls. The sliding block can be slidably arranged in the fitting shell. The side wall of the sliding block is provided with a sliding groove. The ends of the sliding groove are connected to each other. The plurality of sliding balls can be slidably arranged in the sliding groove. Two adjacent sliding balls are arranged to fit each other. The common section of the plurality of sliding balls located on the sliding block close to the end face of the steel box beam can lock or release the matching relationship between the sliding balls and the end face of the fitting shell close to the steel box beam in the same vertical plane.

10. The installation device for a large-span high-speed steel box girder according to claim 1, characterized in that: The two correcting devices form a group of correcting units, and the correcting units are arranged in several groups. Several groups of correcting units are arranged on the piers at equal intervals along the setting direction of the piers, and the last group of correcting units is arranged at the end of the pier along the sliding direction of the steel bridge.

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