A monitoring and early warning system for bent cap construction

Abstract

The utility model discloses a kind of monitoring and early warning systems for bent cap construction, electric hoop, the top of the electric hoop is provided with several annularly distributed sliders, the slider is radially slid on the top of the electric hoop, inductive component is arranged on the slider, and the inductive component is used to induct the pier surface matched with the electric hoop. The utility model provides a kind of monitoring and early warning systems for bent cap construction, to solve the problem that the stability and safety of bent cap construction are disturbed due to uneven pier surface in the prior art, the purpose of monitoring and early warning to pier surface is realized in the construction process of bent cap hoop method.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction, specifically to a monitoring and early warning system for bridge cap construction. Background Technology

[0002] The bridge clamp method is a common method for bridge cap beam construction, applicable to cast-in-place support systems for cap beams of cylindrical piers. Its core is to bear the cap beam and construction load through the friction between the clamp and the pier column. Conventional cap beam clamp construction is less applicable in high-altitude and cold regions, mainly because: (1) The conventional cap beam clamp method requires a lot of manpower, and the work efficiency and health of personnel in high-altitude and cold regions are under great pressure, which is quite challenging. (2) Road traffic in high-altitude and cold regions remains unchanged, which is not conducive to the entry and operation of large machinery and equipment. (3) The oxygen content in high-altitude and cold regions is low, and the power of the diesel engine used in the traditional clamp construction is reduced by 30% to 40%, and the diesel combustion is incomplete, which causes greater environmental pollution.

[0003] Existing technologies include some automated cap beam construction equipment that uses two electric clamps working alternately to climb along the pier. However, in high-altitude and cold regions, due to extreme temperature differences between day and night, the pier is susceptible to continuous thermal expansion and contraction during the cast-in-place curing process. This results in lower surface smoothness after final setting, with some protrusions, depressions, or undulations. These protrusions or depressions are difficult to identify visually from the ground, which inevitably affects the subsequent clamp climbing operation. Especially during the jacking process with a large upper load, the presence of protrusions or depressions on the pier surface forces a reduction in the friction between the clamp and the pier, interfering with the clamp's clamping stability. Utility Model Content

[0004] This utility model provides a monitoring and early warning system for cap beam construction to solve the problem in the prior art where unevenness of the pier column surface interferes with the stability and safety of cap beam construction, and to achieve the purpose of monitoring and early warning of the pier column surface during the cap beam clamping method construction process.

[0005] This utility model is achieved through the following technical solution:

[0006] A monitoring and early warning system for cap beam construction includes an electric clamp. The top of the electric clamp is provided with several annularly distributed sliders. The sliders slide radially on the top of the electric clamp. The sliders are provided with sensing components for sensing the surface of the pier column that matches the electric clamp.

[0007] To address the problem in existing technologies where uneven pier surfaces interfere with the stability and safety of cap beam construction, this invention proposes a monitoring and early warning system for cap beam construction. This application features several evenly distributed, annular sliders on the top of the electric clamp, allowing all sliders to move in a controlled radial direction. Each slider is equipped with a sensing component to detect the flatness of the pier surface. Since the sliders and sensing components are located on top of the electric clamp, they can detect the flatness of the area above the electric clamp during its climbing process, providing a reference for the clamp's stopping position based on on-site measurements. This reduces the risk of the electric clamp clamping on uneven areas, significantly improves the climbing stability and operational safety of the clamp, and is more suitable for cap beam construction in high-altitude and cold regions.

[0008] Furthermore, the top of the electric clamp is provided with a slide rail, and the slider slides on the slide rail; it also includes a power device for driving the slider to slide.

[0009] This solution uses a power device to drive the slider to slide. After sliding to the designated position, the power device can temporarily position the slider. The power device can be implemented using any existing technology, such as a linear motion module, cylinder, electric push rod, etc.

[0010] Furthermore, a limiting part is provided at one radially inward end of the slide rail to prevent the slider from falling off.

[0011] Furthermore, the sensing component includes a metal sheet connected to the slider and a pressure monitoring component for monitoring the force on the metal sheet.

[0012] In existing technologies, the flatness of concrete component surfaces is generally determined by distance measurement. However, this method has several drawbacks when used in this application: First, in high-altitude and cold regions, thermal expansion and contraction are severe, and the surface of the pier is prone to loosening and peeling off. Distance measurement cannot directly contact the pier surface and is difficult to peel off the loose surface, which can easily lead to misjudgment. Second, distance measurement is a point measurement, and a large number of distance sensors need to be deployed in the annular space of the pier surface, which increases both cost and failure rate. In addition, the risk of damage to the exposed sensors is also significantly increased.

[0013] To overcome the above problems, this solution uses a combination of metal sheets and pressure monitoring components to achieve sensing of the pier surface. Specifically, during the process of the lower electric clamp tightening the pier, the upper electric clamp loosening the pier, and the lifting device extending, the position of the slider is adjusted to make the metal plate contact the outer wall of the pier. The metal plate experiences downward frictional resistance generated by the pier. When the pier surface is flat, this frictional resistance is relatively stable, and the real-time pressure monitored by the pressure monitoring component is also relatively stable without significant fluctuations. If the pier surface has protrusions, the real-time pressure monitored by the pressure monitoring component increases abnormally; if the pier surface has depressions, the real-time pressure monitored by the pressure monitoring component decreases abnormally. Both of these conditions can be effectively monitored. Compared with traditional ranging methods: First, for piers with loose surfaces, the sliding contact of the metal plate has the probability of peeling them off, and the surface depressions can be identified at the moment of peeling and after peeling, thereby reducing misjudgment and avoiding identifying loose areas as areas of good quality. Second, the metal plate can be set to a certain width, thereby achieving sensing of a larger area with a single metal plate, reducing the amount of sensing components used and lowering production and maintenance costs.

[0014] Furthermore, the metal sheet is strip-shaped, and the long axis of the metal sheet extends radially; the radially inward end of the metal sheet is a first concave arc surface; the first concave arc surfaces on all metal sheets are coaxial and have the same diameter.

[0015] In this design, the radially inward end of the metal sheet is used to contact the pier surface. Therefore, the curvature of the first concave arc surface matches that of the pier, allowing it to fully and completely adhere to the pier surface. The strip-shaped metal sheet has a certain deformation capacity, ensuring it can pass through the protruding areas of the pier surface.

[0016] Furthermore, the slider has a slot that matches the metal sheet at one end in the radial direction, and the metal sheet abuts against the bottom of the slot at one end in the radial direction.

[0017] In this design, the metal sheet is partially located inside the slot and partially extends outside the slot. The slot allows for quick assembly and positioning of the metal sheet, and it can also be easily replaced after the metal sheet is damaged by friction.

[0018] Furthermore, the bottom of the slot is a second concave arc surface, and the axis of the second concave arc surface is perpendicular to the axis of the electric clamp; the radially outward end of the metal sheet matches the second concave arc surface. The pressure monitoring component includes an upper pressure sensor, a middle pressure sensor, and a lower pressure sensor distributed sequentially from top to bottom on the wall of the second concave arc surface.

[0019] Considering the extremely high lifting load during operation, while mounting the pressure monitoring component on the top or outer end face of the metal plate would provide a direct view of the pier surface protrusions, it would also be highly susceptible to damage under the friction or impact of heavy loads. Therefore, this solution mounts the pressure monitoring component on the inner wall of the slot, effectively preventing easy damage due to wear or impact, and significantly extending the service life of this application.

[0020] In this solution, the pressure monitoring component includes three pressure sensors: upper, middle, and lower. During the upward movement of the upper electric clamp: if the pier surface is relatively flat, the pressure monitored by the three sensors remains relatively stable, with the upper pressure sensor monitoring the highest pressure; if the pier surface has protrusions, the metal plate will deform to pass through the corresponding protrusions. During this process, the monitoring pressure of the upper pressure sensor first increases, then the monitoring pressure of the middle pressure sensor increases, and finally the monitoring pressures of the upper and middle pressure sensors return to normal, while the lower pressure sensor experiences a momentary pressure increase; if the pier surface has depressions, the monitoring pressures of the upper and middle pressure sensors will both decrease significantly. Based on the above principles, the flatness of the pier surface can be sensed in real time according to the pressure monitoring data of the upper, middle, and lower pressure sensors, thus providing real-time reference for the entire clamp climbing assembly's climbing process, avoiding clamping at protruding or depressed areas, thereby improving climbing stability and operational safety.

[0021] Those skilled in the art should understand that the concave arc shape in this application refers to an arc surface with the concave surface facing radially inward.

[0022] Furthermore, the central pressure sensor passes through the long axis of the metal sheet, and the upper pressure sensor and the lower pressure sensor are symmetrically distributed on both sides of the central pressure sensor.

[0023] Furthermore, arched spring pieces are provided on opposite sides of the metal sheet, and positioning grooves matching the arched spring pieces are provided on the inner walls of opposite sides of the slot. When the two arched spring pieces are respectively located in the two positioning grooves, the metal sheet contacts the pressure monitoring component. By compressing and deforming the arched spring pieces into the corresponding positioning grooves, temporary positioning and installation of the metal sheet in the slot are achieved. When the metal sheet is excessively worn, it can be simply removed and replaced, effectively protecting the internal pressure monitoring component and reducing maintenance and usage costs.

[0024] Compared with the prior art, this utility model has at least the following advantages and beneficial effects:

[0025] 1. This utility model provides a monitoring and early warning system for cap beam construction, which can provide on-site measurement reference for the stopping position of electric clamps, thereby reducing the risk of electric clamps clamping in uneven areas, significantly improving the climbing stability and operational safety of the clamps, and making it more suitable for cap beam construction operations in high-altitude and cold regions.

[0026] 2. This utility model discloses a monitoring and early warning system for cap beam construction. It uses a combination of a metal sheet and a pressure monitoring component to sense the surface of the pier column. For pier columns with loose surfaces, the sliding contact of the metal sheet may peel it off. The surface depression can be identified at the moment of peeling and after peeling, thereby reducing misjudgment and avoiding the identification of loose areas as areas with good quality. Secondly, the metal sheet can be set to a certain width, so that a larger area can be sensed with a single metal sheet, reducing the amount of sensing components used and lowering production and maintenance costs. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a partial top view of the electric clamp in a specific embodiment of the present invention;

[0029] Figure 2 for Figure 1 A cross-sectional view of the AA plane;

[0030] Figure 3 for Figure 2 A magnified view of a section at point B in the middle;

[0031] Figure 4 This is a schematic diagram of the slider structure in a specific embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the metal sheet in a specific embodiment of the present invention.

[0033] The attached diagram shows the markings and corresponding component names:

[0034] 1-Electric clamp, 4-Slider, 401-Limiting part, 5-Metal sheet, 501-First concave arc surface, 502-Arch-shaped spring sheet, 6-Slot, 601-Positioning groove, 7-Upper pressure sensor, 8-Middle pressure sensor, 9-Lower pressure sensor, 10-Slide rail. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model. In the description of this application, it should be understood that terms such as "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "high," "low," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application. Example

[0036] like Figures 1 to 5 The system shown is a monitoring and early warning system for the construction of a cap beam, including an electric clamp 1. The top of the upper electric clamp 1 is provided with several annularly distributed sliders 4. The sliders 4 slide radially on the top of the upper electric clamp 1. The sliders 4 are provided with sensing components, which are used to sense the flatness of the pier surface.

[0037] The sensing component includes a metal sheet 5 connected to the slider 4 and a pressure monitoring component for monitoring the force on the metal sheet 5. In this embodiment, the metal sheet 5 is strip-shaped, and the long axis of the metal sheet 5 extends radially; the radially inward end of the metal sheet 5 is a first concave arc surface 501 that matches the surface of the pier column; the first concave arc surfaces 501 on all metal sheets 5 are coaxial and have the same diameter.

[0038] The slider 4 has a slot 6 that matches the metal sheet 5 at one end in the radial direction, and the metal sheet 5 abuts against the bottom of the slot 6 at one end in the radial direction.

[0039] The bottom of the slot 6 is a second concave arc surface, and the axis of the second concave arc surface is perpendicular to the axis of the upper electric clamp 1. The pressure monitoring component includes an upper pressure sensor 7, a middle pressure sensor 8, and a lower pressure sensor 9 distributed sequentially from top to bottom on the wall surface of the second concave arc surface. The middle pressure sensor 8 passes through the long axis of the metal sheet 5, and the upper pressure sensor 7 and the lower pressure sensor 9 are symmetrically distributed on both sides of the middle pressure sensor 8. Arched spring pieces 502 are provided on opposite sides of the metal sheet 5, and positioning grooves 601 matching the arched spring pieces 502 are provided on the inner walls of opposite sides of the slot 6. When the two arched spring pieces 502 are respectively located in the two positioning grooves 601, the metal sheet 5 contacts the pressure monitoring component.

[0040] In this embodiment, the radially outward end of the metal sheet 5 has a shape that matches the second concave arc surface, i.e., as shown in the figure. Figure 5 The structure shown is an outward-protruding structure.

[0041] In this embodiment, a slide rail 10 is provided on the top of the upper electric clamp 1, and the slider 4 is slidably engaged on the slide rail 10. A limiting part 401 for preventing the slider 4 from falling off is provided at one radially inward end of the slide rail 10; it also includes a power device for driving the slider 4 to slide. The power device can be implemented using a linear module or electric push rod that are widely used in the prior art; when the slider 4 slides to the designated position, the power device is turned off, and the position of the slider 4 can be locked by the power device.

[0042] In this embodiment, all sliders 4 move in tandem and synchronously along the radial direction, while always maintaining the same diameter.

[0043] Furthermore, those skilled in the art should understand that the appendix Figure 1 The diagram shows the structure of half of an electric clamp; the other half, which is not shown, can be arranged symmetrically.

[0044] In a more preferred embodiment, a control module connected to all sensing components is also included. This control module controls the movement of the electric clamp and its corresponding lifting device. The control module can be implemented using existing, mature microcontrollers, PLCs, etc.

[0045] In a more preferred embodiment, a warning module is further included, which is connected to the output signal of the control module. The warning module can use any existing mature method such as sound, light, electricity, or electricity to provide warnings.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Additionally, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

Claims

1. A monitoring and early warning system for cap beam construction, comprising an electric clamp (1), characterized in that, The top of the electric clamp (1) is provided with several annularly distributed sliders (4). The sliders (4) slide radially on the top of the electric clamp (1). The sliders (4) are provided with sensing components, which are used to sense the pier surface that matches the electric clamp (1).

2. The monitoring and early warning system for cap beam construction according to claim 1, characterized in that, The electric clamp (1) is provided with a slide rail (10) at the top, and the slider (4) slides on the slide rail (10); it also includes a power device for driving the slider (4) to slide.

3. The monitoring and early warning system for cap beam construction according to claim 2, characterized in that, The slide rail (10) is provided with a limiting part (401) at one end radially inward to prevent the slider (4) from falling off.

4. The monitoring and early warning system for cap beam construction according to claim 1, characterized in that, The sensing component includes a metal sheet (5) connected to the slider (4) and a pressure monitoring component for monitoring the force on the metal sheet (5).

5. A monitoring and early warning system for cap beam construction according to claim 4, characterized in that, The metal sheet (5) is strip-shaped, and the long axis of the metal sheet (5) extends radially; the radially inward end of the metal sheet (5) is a first concave arc surface (501); the first concave arc surfaces (501) on all metal sheets (5) are coaxial and have the same diameter.

6. The monitoring and early warning system for cap beam construction according to claim 4, characterized in that, The slider (4) has a slot (6) that matches the metal sheet (5) from one end in the radial direction inward, and the other end of the metal sheet (5) abuts against the bottom of the slot (6).

7. A monitoring and early warning system for cap beam construction according to claim 6, characterized in that, The bottom of the slot (6) is a second concave arc surface, and the axis of the second concave arc surface is perpendicular to the axis of the electric clamp (1); the radially outward end of the metal sheet (5) matches the second concave arc surface.

8. A monitoring and early warning system for cap beam construction according to claim 7, characterized in that, The pressure monitoring assembly includes an upper pressure sensor (7), a middle pressure sensor (8), and a lower pressure sensor (9) distributed sequentially from top to bottom on the wall of the second concave arc surface.

9. A monitoring and early warning system for cap beam construction according to claim 8, characterized in that, The middle pressure sensor (8) passes through the long axis of the metal sheet (5), and the upper pressure sensor (7) and the lower pressure sensor (9) are symmetrically distributed on both sides of the middle pressure sensor (8).

10. A monitoring and early warning system for cap beam construction according to claim 6, characterized in that, Arched springs (502) are provided on opposite sides of the metal sheet (5), and positioning grooves (601) matching the arched springs (502) are provided on the inner walls of opposite sides of the slot (6); when the two arched springs (502) are respectively located in the two positioning grooves (601), the metal sheet (5) contacts the pressure monitoring component.

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