Multi-point force-intelligence force measuring device

Abstract

The utility model discloses a kind of multi-point force measuring intelligent force measuring devices, including support body, further include adjusting mechanism for adjusting support height, adjusting mechanism is equipped with multiple force measuring elements for feeling the stress of support body in each area in plane between support body.The utility model can monitor the stress uniformity of each area in support plane.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing force measurement technology, specifically to a multi-point intelligent force measuring device. Background Technology

[0002] As the main force-transmitting components directly connecting the superstructure and substructure of a bridge, the changes in the forces acting on the bridge bearings can largely reflect the overall operational status of the bridge. Collecting monitoring data on the vertical reaction forces of bridge bearings provides a technical basis for bridge health monitoring. With the increasing construction of highway and railway bridges in my country, monitoring the static and dynamic vertical loads on bridge bearings is of significant practical importance for bridge operation.

[0003] Support devices are typically installed between structural components to transfer loads from above. For the safety of the upper structural components, it is generally necessary to monitor the stress on the support devices. If the stress is abnormal, the height needs to be adjusted to achieve the requirement of stress balance. Traditional force-measuring supports measure a total vertical reaction force, which makes it difficult to monitor the uniformity of stress in different areas within the plane of the support. Utility Model Content

[0004] The purpose of this invention is to provide a multi-point intelligent force measuring device that can monitor the uniformity of force in different areas within the plane of the support.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] A multi-point force measuring intelligent force measuring device includes a support body and an adjustment mechanism for adjusting the height of the support. Multiple force measuring elements for sensing the force on the support body in different areas of the plane are provided between the adjustment mechanism and the support body.

[0007] This solution utilizes multiple force-measuring elements to achieve regionalized force sensing within the support plane. It can accurately acquire pressure distribution data (such as pressure values ​​and coordinates of the points of application) for each area of ​​the support body. Compared to traditional single-point force-measuring devices that measure a total vertical force, this solution enhances the dimensionality of mechanical data, enabling monitoring of the uniformity of force across different areas within the support plane. The sum of the force data from all elements represents the overall force on the support, while individual data from each element reflects the force situation in different areas. This allows for monitoring both the overall force situation and the force situation in individual areas. The adjustment mechanism is linked to the force-measuring elements, automatically adjusting the support height based on real-time force data to achieve dynamic balance. A failure of a single force-measuring element does not affect the overall monitoring, and the system maintains its functional integrity.

[0008] Optionally, the support body is positioned above the adjustment mechanism, and multiple force measuring elements are distributed between the support body and the adjustment mechanism.

[0009] Optionally, the force measuring element is a pressure sensor, and there are five force measuring elements, one of which is located in the middle, and the other four are arranged in a cross shape around the middle force measuring element.

[0010] Optionally, the adjustment mechanism includes a base plate, a top plate, adjustment blocks, and a limiting pad. Multiple force measuring elements are distributed between the top surface of the top plate and the bottom surface of the support body. The adjustment blocks are symmetrically distributed between the bottom surface of the top plate and the top surface of the base plate. The top surface of the adjustment block and the bottom surface of the top plate are in inclined straight-plane contact, and the bottom surface of the adjustment block and the top surface of the base plate are in flat straight-plane contact. The limiting pad is located between the two adjustment blocks.

[0011] Optionally, the top surface of the top plate has a basin, the lower end of the support body is located in the basin, and the side wall of the basin is provided with assembly through holes for loading and unloading force measuring elements, and the assembly through holes are distributed in a cross shape.

[0012] Optionally, it also includes a drive device, which includes a support plate and a hydraulic cylinder. The support plate is connected to the end of the adjusting block, and one end of the hydraulic cylinder is mounted on the support plate at the end of one of the adjusting blocks, while the other end abuts against the support plate at the end of the other adjusting block.

[0013] Optionally, the adjusting block is provided with a support plate at both ends, and the support plate is located outside the bottom plate and the top plate.

[0014] Optionally, a locking bolt is provided between the top plate and the bottom surface.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this utility model, multiple force-measuring elements are used to achieve regional force sensing within the support plane. This allows for precise acquisition of pressure distribution data in various regions of the support body. Compared to traditional single-point force-measuring devices that measure a total vertical force, this solution improves the dimensionality of mechanical data, enabling monitoring of the uniformity of force in different regions within the support plane. The sum of the force data from all force-measuring elements represents the overall force on the support, while individual data from each element reflects the force situation in different regions. This allows for monitoring both the overall force situation and the force situation in individual regions. The adjustment mechanism is linked to the force-measuring elements, automatically adjusting the support height based on real-time force data to achieve dynamic balance. The failure of a single force-measuring element does not affect the overall monitoring, and the system maintains its functional integrity.

[0017] 2. By retracting the drive device, the support body falls to its height under load, allowing the temporary support mechanism to take over the load, so that the force measuring element under the support body can be replaced. There is no need to lift the beam with large displacement, and the stress distribution of the beam will not be changed. This ensures the safety of the beam when replacing the force measuring element. The replacement of the force measuring element is simple, quick and efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a side view semi-sectional structural schematic diagram of the present invention;

[0020] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of AA.

[0021] Reference numerals: 1-Support body, 2-Force measuring element, 3-Pelvic sidewall, 4-Top plate, 5-Bottom plate, 6-Adjusting block, 7-Limiting pad, 8-Support plate, 9-Locking bolt, 10-Control system, 11-Hydraulic cylinder, 12-Pelvic cavity, 13-Assembly through hole. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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 limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0025] A multi-point force measuring intelligent force measuring device includes a support body 1 and an adjustment mechanism for adjusting the height of the support. Multiple force measuring elements 2 are provided between the adjustment mechanism and the support body 1 for sensing the force on the support body 1 in different areas of the plane.

[0026] In this embodiment, as Figure 1 and Figure 2As shown, the support body 1 can be a pot bearing, spherical bearing, hyperboloid vibration isolation bearing, friction pendulum bearing, or rubber bearing. Multiple force measuring elements 2 enable regional force sensing within the support plane, accurately acquiring pressure distribution data (such as pressure values ​​and coordinates of the point of application) for each region within the plane of the support body 1. Compared to traditional single-point force measuring devices that measure a total vertical force, this scheme improves the dimensionality of mechanical data, monitoring whether the force is uniform across different regions within the support plane. The sum of the force data from all force measuring elements 2 represents the overall force on the support, while individual data from each force measuring element 2 reflects the force situation in different regions. This allows for monitoring both the overall force situation and the force situation in individual regions. The adjustment mechanism is linked to the force measuring elements 2, automatically adjusting the support height based on real-time force data to achieve dynamic balance. A failure of a single force measuring element 2 does not affect the overall monitoring, and the system maintains its functional integrity.

[0027] Furthermore, the support body 1 is positioned above the adjustment mechanism, and multiple force measuring elements 2 are distributed between the support body 1 and the adjustment mechanism.

[0028] Specifically, multiple force measuring elements 2 can communicate with the external control system 10, so that real-time mechanical data can be fed back to the control system 10 in real time. This allows the control system 10 to analyze the stress conditions of each area of ​​the support body 1 and determine the uniformity of stress in each area within the support plane, thereby evaluating the overall state of the support and the beam. Based on the evaluation results, the control adjustment mechanism is then used to automatically adjust the height of the support body 1.

[0029] Furthermore, the force measuring element 2 is a pressure sensor, and there are five force measuring elements 2, one of which is located in the middle, and the other four force measuring elements 2 are arranged in a cross shape around the middle force measuring element 2.

[0030] Specifically, such as Figure 3 As shown, in this embodiment, a total of five pressure sensors are arranged on the bottom surface of the support body 1. One is set in the middle position, and the other four are distributed in a cross shape around the middle pressure sensor. In this way, the five pressure sensors can monitor the force on the middle part of the support body 1 and the force on the four surrounding areas. Then, based on the force data of the five areas, the uniformity of the force on the support body 1 in the plane is determined. The sum of the forces of the five pressure sensors is the magnitude of the vertical force borne by the support body 1.

[0031] Furthermore, the adjustment mechanism includes a base plate 5, a top plate 4, an adjustment block 6, and a limiting pad 7. Multiple force measuring elements 2 are distributed between the top surface of the top plate 4 and the bottom surface of the support body 1. The adjustment blocks 6 are symmetrically distributed between the bottom surface of the top plate 4 and the top surface of the base plate 5. The top surface of the adjustment block 6 and the bottom surface of the top plate 4 are in oblique straight-plane contact, and the bottom surface of the adjustment block 6 and the top surface of the base plate 5 are in flat straight-plane contact. The limiting pad 7 is located between two adjustment blocks 6.

[0032] Specifically, such as Figure 1 As shown, the force measuring element 2 is pressed between the bottom surface of the support body 1 and the top surface of the top plate 4. This allows for accurate measurement of the vertical force in each area within the plane of the support body 1. The top plate 4 and the bottom surface form an adjustment cavity. Two wedge-shaped adjustment blocks 6 are symmetrically distributed within the adjustment cavity. The two ends of the adjustment blocks 6 extend to the outside of the top plate 4. The adjustment blocks 6 make oblique straight contact with the bottom surface of the top plate 4 and flat contact with the top surface of the bottom plate 5. The top surfaces of the two adjustment blocks 6 together form an inverted V-shaped surface. When the two adjustment blocks 6 are relatively close, the height of the top plate 4 increases; conversely, when they are relatively far apart, the height of the top plate 4 decreases. The change in the height of the top plate 4 causes a change in the height of the support body 1. A limiting pad 7 is set between the opposite end faces of the two adjustment blocks 6 to limit the relative closeness of the two adjustment blocks 6 after the height adjustment is completed, ensuring the stability after the height adjustment. The top and bottom surfaces of the adjustment blocks 6 are provided with wear-resistant polytetrafluoroethylene plates, which extend the service life of the adjustment blocks 6 and reduce the coefficient of friction of the sliding adjustment blocks 6, making the height change of the top plate 4 more flexible.

[0033] Furthermore, the top surface of the top plate 4 has a basin 12, the lower end of the support body 1 is located inside the basin 12, and the side wall 3 of the basin is provided with an assembly through hole 13 for loading and unloading the force measuring element 2. The assembly through holes 13 are distributed in a cross shape.

[0034] Specifically, such as Figure 3 As shown, a basin 12 is located on the top surface of the top plate 4. The lower part of the support body 1 is located inside the basin 12, and the force measuring element 2 is also located inside the basin 12. The basin 12 can limit the support body in the horizontal plane, preventing the support body 1 from detaching from the top plate 4 and causing a beam fall accident. At the same time, a cross-shaped assembly through hole 13 is provided on the side wall 3 of the basin. There are three pressure sensors between the opposite assembly through holes 13. The assembly through holes 13 are channels for the later replacement of pressure sensors.

[0035] Furthermore, it also includes a drive device, which includes a support plate 8 and a hydraulic cylinder 11. The support plate 8 is connected to the end of the adjusting block 6. One end of the hydraulic cylinder 11 is mounted on the support plate 8 at the end of one of the adjusting blocks 6, and the other end abuts against the support plate 8 at the end of the other adjusting block 6.

[0036] Furthermore, both ends of the adjusting block 6 are provided with support plates 8, which are located outside the bottom plate 5 and the top plate 4.

[0037] Specifically, the drive device consists of a hydraulic cylinder 11 and a support plate 8. The support plate 8 is fixed to both ends of the adjusting block 6 by bolts. The ends of both adjusting blocks 6 are connected to the support plate 8. The hydraulic cylinder 11 is distributed on both sides of the transverse axis. One end of the hydraulic cylinder 11 is installed on the support plate 8 at the end of one of the adjusting blocks 6, and the other end (telescopic end) abuts against the support plate 8 at the end of the other adjusting block 6. The hydraulic cylinder 11 is controlled to extend and retract by the control system 10. When the telescopic end of the hydraulic cylinder 11 extends, it pushes the two adjusting blocks 6 away from each other, causing the height of the top plate 4 to rise. When the telescopic end of the hydraulic cylinder 11 retracts, it releases the abutment against the support plate 8. Then, under the action of the upper load (the weight of the beam), the two adjusting blocks 6 move closer to each other, causing the height of the top plate 4 to drop. The control system 10 can accurately control the extension and retraction length of the hydraulic cylinder 11, thereby accurately controlling the adjustment of the support height.

[0038] Furthermore, a locking bolt 9 is provided between the top plate 4 and the bottom surface.

[0039] Specifically, the locking bolt 9 is used to lock the top plate 4 and the bottom plate 5. When the height of the support body 1 needs to be adjusted, the locking bolt 9 is unscrewed. After the height adjustment is completed, the locking bolt 9 is reinstalled to restrict the movement of the adjusting block 6, thereby ensuring that the height does not change after adjustment.

[0040] In this embodiment, as Figure 1 As shown, when the force measuring element 2 ages and becomes damaged after prolonged use, it needs to be replaced. The traditional replacement involves lifting the beam a certain distance, removing the support, and replacing the internal sensor. This causes changes in the beam's stress, compromising safety, and lifting the beam is a complex process. In this solution, when replacing the force measuring element 2, temporary support mechanisms (such as jacks) are first installed on both sides of the support body 1. The top of the temporary support mechanism is close to the bottom of the beam. Then, the control system 10 precisely controls the two hydraulic cylinders 11 on the outside of the support body 1 to extend by a small displacement (millimeter level), causing the two adjusting blocks 6 to move relatively away. This millimeter-level displacement will not affect the upper structure until the limiting pads 7 that constrain the positions of the two adjusting blocks 6 are unloaded. Then, the limiting pads 7 are removed, releasing the movement space of the two adjusting blocks 6. Next, the power of the hydraulic cylinders 11 is gradually reduced, and the upper load (beam weight) is gradually decreased. Under the action of the two adjusting blocks 6, they will automatically slide towards the middle, the height of the support body 1 will decrease, and it will fall by itself until the load is borne by the temporary support. The support body 1 will be unloaded, and then the force measuring element 2 to be replaced will be taken out from the assembly through hole 13. The new force measuring element 2 will be installed. After the installation is completed, the hydraulic cylinder 11 will be extended by the control system 10 to move the two adjusting blocks 6 to the position before the replacement of the limiting pad 7. Then the limiting pad 7 will be inserted between the two adjusting blocks 6, and the power of the hydraulic cylinder 11 will be slowly reduced until the two adjusting blocks 6 are completely constrained by the limiting pad 7. The temporary support will be removed, and the replacement of the force measuring element 2 will be completed.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A multipoint force-intelligent force measuring device comprising a support body (1), characterized in that, It also includes an adjustment mechanism for adjusting the height of the support, and multiple force measuring elements (2) are provided between the adjustment mechanism and the support body (1) for sensing the force on the support body (1) in different areas of the plane.

2. A multi-point force smart force measuring device according to claim 1, wherein, The support body (1) is positioned above the adjustment mechanism, and multiple force measuring elements (2) are distributed between the support body (1) and the adjustment mechanism.

3. A multi-point force smart force measuring device according to claim 2, wherein, The force measuring element (2) is a pressure sensor. There are five force measuring elements (2), one of which is located in the middle and the other four are arranged in a cross shape around the middle force measuring element (2).

4. The multi-point force smart force gauge of claim 2, wherein, The adjustment mechanism includes a base plate (5), a top plate (4), an adjustment block (6), and a limiting pad (7). Multiple force measuring elements (2) are distributed between the top surface of the top plate (4) and the bottom surface of the support body (1). The adjustment blocks (6) are symmetrically distributed between the bottom surface of the top plate (4) and the top surface of the base plate (5). The top surface of the adjustment block (6) and the bottom surface of the top plate (4) are in oblique straight-plane contact, and the bottom surface of the adjustment block (6) and the top surface of the base plate (5) are in flat straight-plane contact. The limiting pad (7) is located between the two adjustment blocks (6).

5. A multi-point force smart force measuring device according to claim 4, wherein, The top plate (4) has a basin (12) on its top surface. The lower end of the support body (1) is located inside the basin (12). The side wall (3) of the basin is provided with an assembly through hole (13) for loading and unloading the force measuring element (2). The assembly through hole (13) is distributed in a cross shape.

6. A multi-point force smart force measuring device according to claim 4, wherein, It also includes a drive device, which includes a support plate (8) and a hydraulic cylinder (11). The support plate (8) is connected to the end of the adjusting block (6). One end of the hydraulic cylinder (11) is mounted on the support plate (8) at the end of one of the adjusting blocks (6), and the other end abuts against the support plate (8) at the end of the other adjusting block (6).

7. A multi-point force smart force measuring device according to claim 6, wherein, The adjusting block (6) is provided with a support plate (8) at both ends, and the support plate (8) is located outside the bottom plate (5) and the top plate (4).

8. The multi-point force smart force gauge of claim 4, wherein, A locking bolt (9) is provided between the top plate (4) and the bottom surface.

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