Flexible roller limiting automatic deviation correction stop block device and working method thereof

Abstract

The present application relates to a kind of flexible roller limiting automatic deviation correction stop block device and its working method, the flexible roller limiting automatic deviation correction stop block device is used for the deviation correction when bridge girder deviates predetermined pushing route, the flexible roller limiting automatic deviation correction stop block device includes fixed mechanism and movable mechanism;The fixed mechanism is located in one side of movable mechanism;The fixed mechanism includes fixed block, roller, toothed track;The roller is arranged around fixed block;The toothed track is wrapped in roller outer;The movable mechanism includes sawtooth, spring support, movable block;The movable block is connected with spring support;The sawtooth is attached to movable block.Compared with prior art, the present application makes beam back by roller along the slope rolling, changes sliding friction into rolling friction, reduces the running phenomenon generated in pushing process, improves the safety of pushing construction.

Description

Technical Field

[0001] This invention relates to the field of bridge jacking technology, and in particular to a flexible roller limiting automatic correction block device and its working method. Background Technology

[0002] Corrective blocks are crucial devices for limiting beam displacement during bridge jacking construction. Traditional bridge jacking methods involve installing transverse jacks on the corrective blocks. When beam displacement occurs, jacking is stopped, the magnitude of the displacement is manually assessed, and the transverse jacks on the longitudinal jacking device are manually operated to push the beam out and correct its displacement. This series of operations reduces the jacking construction speed, increases labor and time costs, and places high demands on the operator's technical skills.

[0003] Currently, there is a lack of improvement and innovation in the design of correction blocks. Both domestically and internationally, correction blocks are still mainly rigid fixed blocks, typically made of high-strength steel blocks or cast concrete blocks. This rigid correction block design is suitable for situations where the beam's self-weight is light and the jacking offset is small. When the bridge offset is large, traditional rigid correction blocks are prone to severe deformation under the pressure of the beam, and may also cause the beam to shift during jacking, resulting in uneven jacking speed and abrupt changes in the beam's stress state, often leading to significant construction difficulties and safety hazards. Therefore, there is an urgent need to develop a new type of correction block that is low-cost, efficient, and safe, to achieve stable and automatic correction when the beam offset is large. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a flexible roller limit automatic correction block device and its working method. The flexible roller limit automatic correction block device, through the cooperation of a fixed mechanism and a movable mechanism, can not only meet the requirements of limiting the offset of the beam, but also complete the automatic correction through its own flexible movement without being squeezed and damaged by excessive offset of the beam, and has a certain range of movement deformation capability.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] The first objective of this invention is to provide a flexible roller limiting automatic correction block device for correcting deviations of bridge beams when they deviate from a predetermined jacking path. The flexible roller limiting automatic correction block device includes a fixed mechanism and a movable mechanism. The fixed mechanism is located on one side of the movable mechanism. The fixed mechanism includes a fixed block, a roller, and a toothed track. The roller is positioned around the fixed block, and the toothed track wraps around the roller. The movable mechanism includes saw teeth, a spring support, and a movable block. The movable block is connected to the spring support, and the saw teeth are attached to the movable block.

[0007] Furthermore, the fixed block has a groove on its outside; the roller is placed on the groove and can roll along the groove.

[0008] Furthermore, the movable mechanism also includes a rubber pad; the rubber pad is disposed on the side of the movable block near the beam.

[0009] Furthermore, the saw teeth are saw teeth that can engage with toothed tracks.

[0010] Furthermore, the fixed block has a triangular cross-section, and the movable block has a trapezoidal cross-section; one side of the fixed block is parallel to one side of the movable block.

[0011] Furthermore, the bottom of the movable block is fixed to the spring support.

[0012] Furthermore, the deformation adjustment capability (maximum support displacement distance) of the spring support is not less than the maximum distance between the fixed mechanism and the movable mechanism.

[0013] Furthermore, the height of the upper edge of the movable block should be able to cover the lower edge of the beam.

[0014] Furthermore, the surface of the spring support is lubricated; the surfaces of the toothed track and the saw teeth are ground smooth and dried.

[0015] The second objective of this invention is to provide a method for operating a flexible roller limit automatic correction stop device, comprising the following steps:

[0016] S1. The beam body shifts under external forces (wind load, equipment asynchrony error), the beam body contacts the movable mechanism, and enters the automatic correction capability range of the flexible roller limit automatic correction block device. The beam body and the movable mechanism start to move together.

[0017] S2. The beam continues to shift, the movable block is pushed by the beam and squeezed by the fixed mechanism. At this time, the serrations on the contact surface of the fixed mechanism and the movable mechanism begin to mesh with the toothed track, and the movable block begins to move along the contact surface.

[0018] S3. As the jacking continues, the rollers roll along the channel, causing the movable block to move along the contact surface direction, and the beam body also deflects back.

[0019] S4. As the beam deflects back due to inertia, it separates from the movable block. The spring on the spring support resets the movable mechanism, and the flexible roller limit automatic correction block device returns to its initial state, completing the self-correction process.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The present invention provides a flexible roller limit automatic correction block device, which moves the beam back by the roller rolling along the inclined plane, transforming sliding friction into rolling friction, making the jacking speed more uniform, and the force on the beam does not change significantly. This can effectively reduce the swaying phenomenon generated during the jacking process and improve the safety of jacking construction.

[0022] 2) The flexible roller limit automatic correction block device provided by the present invention realizes the automatic correction process through the return movement of the movable block. It has strong deformation ability and large correction range, avoiding the engineering problem of frequent stopping of the jacking and active correction caused by the extrusion deformation of the traditional rigid fixed block.

[0023] 3) The flexible roller limit automatic correction block device provided by the present invention does not consume energy, is green and pollution-free, and can be reused. This new idea of ​​using a moving device to correct deviation is an effective improvement on the previous correction method of using a fixed device to block deviation. It has great development potential in engineering practice. At the same time, it realizes automatic correction, which is in line with the future prospect of unmanned and intelligent bridge construction.

[0024] 4) The present invention provides a flexible roller limit automatic correction block device, which uses mechanical force to correct deviation. It is low in cost, efficient and safe, and can achieve stable and automatic correction when the beam has a large deviation. Attached Figure Description

[0025] Figure 1 This is a top view schematic diagram of a flexible roller limit automatic correction stop device according to the present invention.

[0026] Figure 2 This is a side view of the fixing mechanism of the present invention.

[0027] Figure 3 This is a side view of the active mechanism of the present invention.

[0028] Figures 4 to 8 A schematic diagram of the operation of the flexible roller limit automatic correction stop device.

[0029] The numbers in the diagram are as follows:

[0030] 1-Fixed block, 2-Roller, 3-Toothed track, 4-Sawtooth, 5-Slot, 6-Rubber pad, 7-Spring support, 8-Moving block, 9-Beam. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0032] Example

[0033] like Figures 1-3 As shown, this embodiment provides a flexible roller limit automatic correction block device for correcting the deviation of the bridge beam 9 from the predetermined jacking path. The flexible roller limit automatic correction block device includes a fixed mechanism and a movable mechanism; the fixed mechanism is located on one side of the movable mechanism.

[0034] The flexible roller limit automatic correction block device is installed on one side of the jacking platform jacking route beam 9, and the fixed mechanism and the movable mechanism are installed with bolts respectively.

[0035] The fixing mechanism includes a fixing block 1, a roller 2, a toothed track 3, and a channel 5; the roller 2 is arranged around the fixing block 1; the toothed track 3 is wrapped around the roller 2; the channel 5 is located outside the fixing block 1; and the roller 2 is placed on the channel 5.

[0036] The movable mechanism includes a saw tooth 4, a rubber pad 6, a spring support 7, and a movable block 8; the movable block 8 is connected to the spring support 7, and the bottom of the movable block 8 is fixed to the spring support 7; the saw tooth 4 is attached to the movable block 8; the rubber pad 6 is located on the side of the movable block 8 near the beam 9.

[0037] The saw tooth 4 is a saw tooth that can engage with the toothed track 3.

[0038] The fixed block 1 has a triangular cross-section, and the movable block 8 has a trapezoidal cross-section; one side of the fixed block 1 is set parallel to one side of the movable block 8.

[0039] The maximum support displacement distance of the spring support 7 is not less than the maximum distance between the fixed mechanism and the moving mechanism.

[0040] The upper edge of the movable block 8 should be high enough to cover the lower edge of the beam 9.

[0041] The surface of the spring support 7 is lubricated; the dust, sand, debris, burrs, and protrusions on the surfaces of the toothed track 3 and the saw teeth 4 are ground smooth and kept dry.

[0042] Before the jacking operation, a dedicated person should be assigned to check whether the device is working properly. When the flexible roller limit automatic correction block device is not in use, the device should be covered with a plastic film and firmly glued to prevent it from being contaminated by water, sand, dust and other contaminants.

[0043] In this embodiment, the size and spacing of the flexible roller limit automatic correction stop device are determined by the allowable deviation range of the correction.

[0044] The working method of the above-mentioned flexible roller limit automatic correction stop device includes the following steps:

[0045] S1. Under external forces, the beam 9 is deflected by wind load and asynchronous error of equipment. The beam 9 comes into contact with the moving mechanism. The rubber pad 6 ensures that the beam 9 and the moving mechanism have full and good contact. The beam enters the correction capability range of the flexible roller limit automatic correction block device. The beam 9 and the moving mechanism start to move together.

[0046] S2. The beam 9 continues to shift, and the movable block 8 is pushed by the beam 9, which squeezes the fixed mechanism. At this time, the serrations 4 on the contact surface of the fixed mechanism and the movable mechanism begin to engage with the toothed track 3, and the movable block 8 begins to move along the contact surface.

[0047] S3. As the jacking continues, the movable block 8 tends to move forward. At this time, the roller 2 rolls along the channel 5, causing the movable block 8 to move along the contact surface direction. At this time, the beam 9 also deflects back.

[0048] S4. As the beam 9 deflects back due to inertia, it separates from the movable block 8. The spring on the spring support 7 resets the movable mechanism, and the flexible roller limit automatic correction block device returns to its initial state, completing the self-correction process.

[0049] Figure 4 The initial condition a is that the flexible roller limit automatic correction block device is in place and the beam 9 has no offset.

[0050] Figure 5 Case b represents the initial offset of beam 9. Beam 9 comes into contact with the movable mechanism and enters the correction range of the flexible roller limit automatic correction block device. Beam 9 and the movable mechanism then begin to move together.

[0051] Figure 6 Case c represents the situation where the movable mechanism moves away from its original position. The beam 9 continues to shift, and the movable block 8 is pushed by the beam 9, causing it to be squeezed by the fixed mechanism. At this time, the serrations 4 on the contact surface between the fixed mechanism and the movable mechanism begin to engage with the toothed track 3, and the movable block 8 can begin to move along the contact surface.

[0052] Figure 7 As the jacking continues, the roller 2 rolls along the channel 5, causing the movable block 8 to move along the contact surface direction, at which point the beam 9 also deflects back.

[0053] Figure 8 Case e represents the situation where beam 9 and the movable mechanism push back along the inclined plane. As beam 9 deflects back due to inertia, it separates from the movable block 8. The spring on the spring support 7 resets the movable mechanism, and the flexible roller limit automatic correction block device returns to its initial state, completing the self-correction process.

[0054] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A method for operating a flexible roller limiting automatic correction stop device, wherein the flexible roller limiting automatic correction stop device is used to correct the deviation of a bridge beam (9) from a predetermined jacking path, characterized in that, The flexible roller limit automatic correction stop device includes a fixed mechanism and a movable mechanism; The fixed mechanism is located on one side of the movable mechanism; The fixing mechanism includes a fixing block (1), a roller (2), and a toothed track (3); The roller (2) is disposed around the fixed block (1); The toothed track (3) is wrapped around the roller (2); The movable mechanism includes a sawtooth (4), a spring support (7), and a movable block (8); The movable block (8) is connected to the spring support (7); The serrations (4) are attached to the movable block (8); The working method includes the following steps: S1. The beam (9) shifts under external action, and the beam (9) contacts the movable mechanism and enters the correction capability range of the flexible roller limit automatic correction block device. The beam (9) and the movable mechanism start to move together. S2, the beam (9) continues to shift, the movable block (8) is pushed by the beam (9) and squeezed by the fixed mechanism. At this time, the serrations (4) on the contact surface of the fixed mechanism and the movable mechanism begin to mesh with the toothed track (3); S3. As the jacking proceeds, the roller (2) rolls, causing the movable block (8) to move along the contact surface direction, and the beam (9) also deflects back. S4. As the beam (9) deflects back due to inertia, it separates from the movable block (8). The spring on the spring support (7) resets the movable mechanism, and the flexible roller limit automatic correction block device returns to its initial state, completing the self-correction process.

2. The working method of the flexible roller limiting automatic correction block device according to claim 1, characterized in that, The fixing block (1) has a channel (5) on its outside; The roller (2) is placed on the channel (5).

3. The working method of the flexible roller limiting automatic correction stop device according to claim 1, characterized in that, The active mechanism also includes a rubber pad (6); The rubber pad (6) is located on the side of the movable block (8) near the beam (9).

4. The working method of the flexible roller limiting automatic correction stop device according to claim 1, characterized in that, The serrations (4) can engage with the toothed track (3).

5. The working method of the flexible roller limiting automatic correction block device according to claim 1, characterized in that, The fixed block (1) has a triangular cross-section, and the movable block (8) has a trapezoidal cross-section; One side of the fixed block (1) is arranged parallel to one side of the movable block (8).

6. The working method of the flexible roller limiting automatic correction stop device according to claim 1, characterized in that, The bottom of the movable block (8) is fixed to the spring support (7).

7. The working method of the flexible roller limiting automatic correction stop device according to claim 1, characterized in that, The maximum support displacement distance of the spring support (7) is not less than the maximum distance between the fixed mechanism and the movable mechanism.

8. The working method of the flexible roller limiting automatic correction block device according to claim 1, characterized in that, The upper edge of the movable block (8) covers the lower edge of the beam (9).

9. The working method of the flexible roller limiting automatic correction stop device according to claim 1, characterized in that, The surface of the spring support (7) is lubricated; The surfaces of the toothed track (3) and the saw teeth (4) are ground smooth and dried.

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