Multi-point force-measuring intelligent force-measuring device and force-measuring element in-situ replacement method

Abstract

The invention discloses a multipoint force-measuring intelligent force-measuring device and a force-measuring element in-situ replacement method, the multipoint force-measuring intelligent force-measuring device comprises a support body and further comprises an adjusting mechanism used for adjusting the height of the support, and a plurality of force-measuring elements used for sensing the stress of the support body in each area in a plane are arranged between the adjusting mechanism and the support body. According to the invention, the stress uniformity of each area in the plane of the support can be monitored, and the replacement of the force measuring element can be realized without jacking the beam body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge support force measurement, in particular to a multi-point force measurement intelligent force measurement device and a force measurement element in-situ replacement method. BACKGROUND

[0002] As the main force transmission component between the superstructure and the substructure of the bridge structure, the force change of the bridge support can reflect the overall operation of the bridge to a great extent, and the collection of the bridge support vertical reaction force monitoring data can provide a technical basis for the health monitoring of the bridge. With the increasing construction of highways and railway bridges in China, the monitoring of the vertical static load and dynamic load of the bridge support has important practical significance for the operation of the bridge.

[0003] Supporting devices are usually arranged between general structural members to transmit the load above. In order to ensure the safety of the structural members above, the force of the supporting device needs to be monitored, and the height needs to be adjusted to achieve force balance when the force is abnormal. The traditional force support measures only the total vertical reaction force, and it is difficult to monitor the uniformity of the force in each area of the support plane. At the same time, the force support needs a sensing element to measure the force. However, the sensing element is prone to aging and damage under long-term working conditions, and needs to be replaced manually. However, the sensing element is installed inside the force measurement device, and due to the small internal structure space, the upper beam body must be jacked to a certain height to replace the sensor, which makes the replacement inconvenient and low in efficiency. SUMMARY

[0004] The purpose of the present application is to provide a multi-point force measurement intelligent force measurement device and a force measurement element in-situ replacement method, which can monitor the force uniformity in each area of the support plane, and can replace the force measurement element without jacking the beam body.

[0005] To solve the above technical problems, the present application adopts the following scheme: A multi-point force measurement intelligent force measurement device, comprising a support body, further comprising an adjusting mechanism for adjusting the height of the support, and a plurality of force measurement elements for sensing the force of the support body in each area of the plane are arranged between the adjusting mechanism and the support body.

[0006] In the scheme, the regional force sensing in the plane of the support is realized by multiple force measuring elements, and the pressure distribution data (such as pressure value and action point coordinates) of each region of the support body can be accurately obtained. Compared with the traditional single-point force measuring device that measures a total vertical force, the mechanical data dimension of the scheme is improved, and the uniformity of the force of each region in the plane of the support can be monitored. The sum of the force data of each force measuring element is the overall force of the support, and the individual data of each force measuring element reflects the force condition of different regions, which can monitor the overall force condition and the force condition of individual regions. The adjusting mechanism is linked with the force measuring element, and the height of the support can be automatically adjusted based on the real-time force data to realize dynamic balance. The failure of a single force measuring element does not affect the overall monitoring, and the system can still maintain functional integrity.

[0007] Optionally, the support body is arranged above the adjusting mechanism, and the multiple force measuring elements are distributed between the support body and the adjusting mechanism.

[0008] Optionally, the force measuring element is a pressure sensor, and five force measuring elements are provided, one of which is distributed in the middle, and the other four are distributed in a cross shape around the middle force measuring element.

[0009] Optionally, the adjusting mechanism includes a bottom plate, a top plate, adjusting blocks, and a limiting pad plate, multiple force measuring elements are distributed between the top surface of the top plate and the bottom surface of the support body, the adjusting blocks are symmetrically distributed between the bottom surface of the top plate and the top surface of the bottom plate, the top surface of the adjusting block and the bottom surface of the top plate are in straight surface contact, the bottom surface of the adjusting block and the top surface of the bottom plate are in flat surface contact, and the limiting pad plate is located between the two adjusting blocks.

[0010] Optionally, the top surface of the top plate has a pelvic cavity, the lower end of the support body is located in the pelvic cavity, the side wall of the pelvic cavity is provided with assembly through holes for assembling and disassembling the force measuring elements, and the assembly through holes are distributed in a cross shape.

[0011] Optionally, it further includes a driving device, and the driving device includes a supporting plate and a hydraulic cylinder, the supporting plate is connected with the end of the adjusting block, one end of the hydraulic cylinder is installed on the supporting plate at one end of the adjusting block, and the other end abuts against the supporting plate at the other end of the adjusting block.

[0012] Optionally, the two ends of the adjusting block are provided with supporting plates, and the supporting plates are located outside the bottom plate and the top plate.

[0013] Optionally, a locking bolt is arranged between the top plate and the bottom plate.

[0014] A method for replacing a force measuring element in situ includes the following steps: S1: a temporary support mechanism is installed on the side of the intelligent force measuring device; S2: the adjusting mechanism adjusts the height of the support body until the temporary support mechanism is loaded, and the support is unloaded; S3: take out the force measuring element to be replaced, and install a new force measuring element; S4: the adjusting mechanism adjusts the height of the support body until the temporary support mechanism is unloaded, the temporary support mechanism is removed, and the adjusting mechanism adjusts the height of the support body to the original position again.

[0015] Optionally, driving devices are connected to the adjusting blocks of the adjusting mechanism, the driving devices are driven by a control system to move the two adjusting blocks away from each other, the limiting pad is taken out, and then the power output of the driving devices is gradually reduced, the two adjusting blocks move relative to each other under the action of the upper load, so that the height of the support body is lowered, and the temporary support mechanism bears the load; after the force measuring element is replaced, the driving devices drive the two adjusting blocks to move away from each other again, the limiting pad is installed between the two adjusting blocks, and then the power output of the driving devices is reduced, and the two adjusting blocks move relative to each other until the limiting pad is compressed.

[0016] The present application has the beneficial effects: 1、In the present application, the force measuring elements are used to realize regional force sensing in the plane of the support, and the pressure distribution data of each region of the support body can be accurately obtained. Compared with the traditional single-point force measuring device that measures a total vertical force, the mechanical data dimension of the present application is improved, the force of each region in the plane of the support can be monitored, the sum of the force data of each force measuring element is the overall force of the support, and the single data of each force measuring element reflects the force condition of different regions. The adjusting mechanism is linked with the force measuring elements, the height of the support can be automatically adjusted based on real-time force data, dynamic balance is realized, the failure of a single force measuring element does not affect the overall monitoring, and the system can still maintain functional integrity.

[0017] 2、The support body is lowered under the action of the load through the retraction of the driving devices, the temporary support mechanism is used to replace the load, so that the force measuring elements below the support body can be replaced, a large-displacement jacking beam body is not needed, the force distribution of the beam body is not changed, the safety of the beam body during replacement of the force measuring elements is ensured, the replacement of the force measuring elements is simple and fast, and the replacement efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the present application; Figure 2 is a side view half-sectional structural schematic view of the present application; Figure 3 is Figure 1 a cross-sectional structural schematic view of A-A in the present application; Figure 4 is a flowchart of replacement of the force measuring elements of the present application.

[0019] Mark No. : 1 - support body, 2 - force measuring element, 3 - pelvic side wall, 4 - top plate, 5 - bottom plate, 6 - adjusting block, 7 - limiting pad plate, 8 - supporting plate, 9 - locking bolt, 10 - control system, 11 - hydraulic cylinder, 12 - pelvic cavity, 13 - assembly through hole. DETAILED DESCRIPTION

[0020] The application will be further described below in conjunction with the embodiments and drawings, but the embodiments of the application are not limited thereto.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0022] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided", "opened", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. EMBODIMENT

[0023] A multi-point force measuring intelligent force measuring device, comprising a support body 1, further comprising an adjusting mechanism for adjusting the height of the support, a plurality of force measuring elements 2 for sensing the force of the support body 1 in each area in the plane are arranged between the adjusting mechanism and the support body 1.

[0024] In this embodiment, as shown in Figure 1 and Figure 2As shown, the support body 1 can be a basin support, a spherical support, a hyperbolic seismic isolation support, a friction pendulum support or a rubber support, and the regional force sensing in the support plane is realized through the plurality of force measuring elements 2, and the pressure distribution data (such as pressure value and action point coordinates) of each region in the support plane can be accurately obtained. Compared with the traditional single-point force measuring device which measures a total vertical force, the mechanical data dimension of the present scheme is improved, and the uniformity of the force of each region in the support plane can be monitored. The sum of the force data of each force measuring element 2 is the overall force of the support, and the individual data of each force measuring element 2 reflects the force condition of different regions, which can monitor the overall force condition and the force condition of individual regions. The adjusting mechanism is linked with the force measuring element 2, and the height of the support can be automatically adjusted based on the real-time force data to realize dynamic balance. The failure of a single force measuring element 2 does not affect the overall monitoring, and the system can still maintain functional integrity.

[0025] Further, the support body 1 is arranged above the adjusting mechanism, and the plurality of force measuring elements 2 are distributed between the support body 1 and the adjusting mechanism.

[0026] Specifically, the plurality of force measuring elements 2 can communicate with the external control system 10, so that the real-time mechanical data can be fed back to the control system 10 in real time, so that the control system 10 can analyze the force condition of each region of the support body 1 and judge the uniformity of the force of each region in the support plane, thereby evaluating the overall state of the support and the beam body, and then controlling the adjusting mechanism to automatically adjust the height of the support body 1 according to the evaluation result.

[0027] Further, the force measuring element 2 is a pressure sensor, and five force measuring elements 2 are provided, one of which is distributed in the middle, and the other four are distributed in the circumferential direction of the middle force measuring element 2 in a cross shape.

[0028] Specifically, as shown in Figure 3 In this embodiment, five pressure sensors are arranged on the bottom surface of the support body 1, one of which is arranged in the middle, and the other four are arranged in the circumferential direction of the middle sensor in a cross shape. In this way, the five pressure sensors can monitor the force condition of the middle of the support body 1 and the force condition of the surrounding four regions, and then judge the uniformity of the force of the support body 1 in the plane according to the force data of the five regions. The sum of the forces of the five pressure sensors is the size of the vertical force borne by the support body 1.

[0029] Further, the adjusting mechanism includes a bottom plate 5, a top plate 4, adjusting blocks 6 and limiting pads 7. The plurality of 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 adjusting blocks 6 are symmetrically distributed between the bottom surface of the top plate 4 and the top surface of the bottom plate 5. The top surface of the adjusting block 6 and the bottom surface of the top plate 4 are in straight surface contact. The bottom surface of the adjusting block 6 and the top surface of the bottom plate 5 are in flat surface contact. The limiting pads 7 are located between the two adjusting blocks 6.

[0030] Specifically, as shown in Figure 1 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, so that the vertical force of each area in the plane of the support body 1 can be accurately measured. The top plate 4 and the bottom surface form an adjusting cavity, and two wedge-shaped adjusting blocks 6 are symmetrically arranged in the adjusting cavity. The two ends of the adjusting block 6 extend to the outside of the top plate 4. The adjusting block 6 is in oblique straight surface contact with the bottom surface of the top plate 4 and in flat surface contact with the top surface of the bottom plate 5. The top surfaces of the two adjusting blocks 6 together form an inverted V-shaped surface. When the two adjusting blocks 6 are relatively close to each other, the height of the top plate 4 rises, and vice versa. The change in the height of the top plate 4 causes the height of the support body 1 to change. The limiting pad plate 7 is arranged between the opposite end surfaces of the two adjusting blocks 6 to limit the relative approach of the two adjusting blocks 6 after the height adjustment is completed, thereby ensuring the stability after the height adjustment. The top surface and the bottom surface of the adjusting block 6 are provided with polytetrafluoroethylene wear plates to prolong the service life of the adjusting block 6 and reduce the friction coefficient of the sliding of the adjusting block 6, so that the height change of the top plate 4 is more flexible.

[0031] Further, the top surface of the top plate 4 has a basin cavity 12, and the lower end of the support body 1 is located in the basin cavity 12. The basin cavity side wall 3 is provided with assembly through holes 13 for assembling and disassembling the force measuring element 2. The assembly through holes 13 are cross-shaped.

[0032] Specifically, as shown in Figure 3 The top surface of the top plate 4 has a basin cavity 12, and the lower end of the support body 1 is located in the basin cavity 12. The basin cavity 12 can limit the support body 1 in the horizontal plane, thereby avoiding the disengagement of the support body 1 from the top plate 4 and causing the beam to fall. Cross-shaped assembly through holes 13 are formed in the basin cavity side wall 3. There are three pressure sensors between the opposite assembly through holes 13. The assembly through holes 13 are channels for replacing the pressure sensors later.

[0033] Further, the driving device includes a supporting plate 8 and a hydraulic cylinder 11. The supporting plate 8 is connected to the end of the adjusting block 6. One end of the hydraulic cylinder 11 is installed on the supporting plate 8 at the end of one of the adjusting blocks 6, and the other end is in abutment with the supporting plate 8 at the end of the other adjusting block 6.

[0034] Further, the two ends of the adjusting block 6 are provided with the supporting plate 8. The supporting plate 8 is located outside the bottom plate 5 and the top plate 4.

[0035] Specifically, the driving device is composed of a hydraulic cylinder 11 and a supporting plate 8, the supporting plate 8 is fixed on the two ends of the adjusting block 6 through bolts, the two ends of each of the two adjusting blocks 6 are connected with the supporting 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 supporting plate 8 at the end of one of the adjusting blocks 6, the other end (the telescopic end) is in abutment with the supporting plate 8 at the end of the other adjusting block 6, the hydraulic cylinder 11 is controlled to extend and retract through the control system 10, when the telescopic end of the hydraulic cylinder 11 is extended, the two adjusting blocks 6 are pushed away from each other, so that the height of the top plate 4 is raised, when the telescopic end of the hydraulic cylinder 11 is retracted, the abutment with the supporting plate 8 is released, then under the action of the upper load (the gravity of the beam body), the two adjusting blocks 6 are relatively close to each other, so that the height of the top plate 4 is lowered, the control system 10 can accurately control the extension length of the hydraulic cylinder 11, and then accurately control the adjustment of the height of the support.

[0036] Further, the top plate 4 is provided with a locking bolt 9 between the top plate 4 and the bottom surface.

[0037] Specifically, the locking bolt 9 is used for locking 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 installed again, which is used for limiting the movement of the adjusting block 6, and then ensures that the height after adjustment does not change.

[0038] A method for replacing a force measuring element 2 in situ, comprising the following steps: S1: installing a temporary support mechanism on the side of the intelligent force measuring device; S2: adjusting the height of the support body 1 by the adjusting mechanism until the temporary support mechanism is loaded, and the support is unloaded; S3: removing the force measuring element 2 to be replaced, and installing a new force measuring element 2; S4: adjusting the height of the support body 1 by the adjusting mechanism until the temporary support mechanism is unloaded, removing the temporary support mechanism, and adjusting the height of the support body 1 to the original position by the adjusting mechanism again.

[0039] Further, the adjusting block 6 of the adjusting mechanism is connected with a driving device, the driving device is driven by the control system 10 to drive the two adjusting blocks 6 to move backward, the limiting pad plate 7 is removed, and then the power output of the driving device is gradually reduced, the two adjusting blocks 6 are relatively moved under the action of the upper load, so that the height of the support body 1 is lowered, and the temporary support mechanism is loaded; after the force measuring element 2 is replaced, the driving device drives the two adjusting blocks 6 to move backward again, the limiting pad plate 7 is installed between the two adjusting blocks 6, and then the power output of the driving device is reduced, the two adjusting blocks 6 are relatively moved until the limiting pad plate 7 is compressed.

[0040] In the embodiment, as Figure 1 and Figure 4When the force measuring element 2 is damaged due to long-term use, the force measuring element 2 needs to be replaced, and the replacement of the transmission is to lift the beam body by a certain distance, then take out the support, and replace the internal sensor, which changes the stress of the beam body and cannot guarantee the safety, and the lifting of the beam body is also a relatively complex project. In the scheme, when the force measuring element 2 needs to be replaced, first, a temporary support mechanism is installed on both sides of the support body 1, the temporary support mechanism can be a jack, the top of the temporary support mechanism is close to the beam bottom, and then the control system 10 precisely controls the two hydraulic cylinders 11 outside the support body 1 to extend a small displacement (millimeter level), so that the two adjusting blocks 6 are relatively far away, the millimeter level displacement will not affect the superstructure, until the limiting pad 7 that restricts the position of the two adjusting blocks 6 is unloaded, then the limiting pad 7 is taken out, the movement space of the two adjusting blocks 6 is released, then the power of the hydraulic cylinder 11 is gradually reduced, under the action of the upper load (beam body gravity), the two adjusting blocks 6 will automatically slide to the middle, the height of the support body 1 is reduced, and self-falling is realized, until the load is borne by the temporary support, the support body 1 is unloaded, then the force measuring element 2 to be replaced is taken out from the assembly hole 13, a new force measuring element 2 is installed, after the installation is completed, the hydraulic cylinder 11 is controlled to extend by the control system 10, the two adjusting blocks 6 are moved to the position before the replacement limiting pad 7, then the limiting pad 7 is inserted between the two adjusting blocks 6, the power of the hydraulic cylinder 11 is slowly reduced until the two adjusting blocks 6 are completely restricted by the limiting pad 7, the temporary support is taken out, and the replacement of the force measuring element 2 is completed.

[0041] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. According to the technical essence of the present application, any simple modification, equivalent replacement and improvement of the above embodiment are still within the protection scope of the technical scheme of the present application.

Claims

1. A method for replacing a force measuring element in situ of a multi-point force measuring intelligent force measuring device, characterized in that: The following steps are involved: S1: Install a temporary support mechanism on the side of the intelligent force measuring device; S2: The adjusting mechanism adjusts the height of the support body (1) until the temporary support mechanism is loaded and the support is unloaded; S3: Take out the force measuring element (2) to be replaced and install a new force measuring element (2); S4: The adjusting mechanism adjusts the height of the support body (1) until the temporary support mechanism is unloaded, the temporary support mechanism is removed, and the adjusting mechanism adjusts the height of the support body (1) to the original position again.

2. The in-situ replacement method for a force measuring element of a multi-point force measuring intelligent force measuring device according to claim 1, characterized in that: A limiting pad (7) for limiting the height change of the support body (1) is provided in the adjustment mechanism. Before the temporary support mechanism is loaded, the limiting pad (7) needs to be removed first.

3. The in-situ replacement method for a force measuring element of a multi-point force measuring intelligent force measuring device according to claim 2, characterized in that: The adjustment mechanism is connected to a driving device, which is controlled by a control system (10) to increase power output, remove the limiting pad (7), and then gradually reduce power output of the driving device, so that the support body (1) is lowered in height to achieve self-falling, and the temporary support mechanism is loaded; after the force measuring element (2) is replaced, the driving device increases power output again, installs the limiting pad (7), and then reduces power output of the driving device, and the limiting pad (7) is pressed to achieve the limiting effect.

4. A multi-point force measurement intelligent force measurement device applied to the method for in-situ replacement of a force measuring element of the first multi-point force measurement intelligent force measurement device according to any one of claims 1 to 3, characterized in that: It comprises a support body (1) and an adjustment mechanism for adjusting the support height; a plurality of force measuring elements (2) for sensing the forces applied to various regions of the support body (1) within a plane are provided between the adjustment mechanism and the support body (1).

5. The multi-point force measurement intelligent force measurement device according to claim 4, characterized in that: The support body (1) is arranged above the adjustment mechanism, and a plurality of force measuring elements (2) are distributed between the support body (1) and the adjustment mechanism.

6. The multi-point force measurement intelligent force measurement device according to claim 4, characterized in that: The adjustment mechanism comprises a bottom plate (5), a top plate (4), an adjustment block (6), and a limiting pad (7); a plurality of 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 block (6) is symmetrically distributed between the bottom surface of the top plate (4) and the top surface of the bottom plate (5); the top surface of the adjustment block (6) and the bottom surface of the top plate (4) are in oblique straight surface contact; the bottom surface of the adjustment block (6) and the top surface of the bottom plate (5) are in flat straight surface contact; and the limiting pad (7) is located between the two adjustment blocks (6).

7. The multi-point force measurement intelligent force measurement device according to claim 6, characterized in that: The top surface of the top plate (4) has a pelvic cavity (12), the lower end of the support body (1) is located in the pelvic cavity (12), and the pelvic cavity side wall (3) is provided with assembly through holes (13) for loading and unloading the force measuring element (2), and the assembly through holes (13) are distributed in a cross shape.

8. The multi-point force measurement intelligent force measurement device according to claim 4, characterized in that: The invention also includes a driving device, which includes a supporting plate (8) and a hydraulic cylinder (11). The supporting plate (8) is connected to the end of the adjusting block (6). One end of the hydraulic cylinder (11) is installed on the supporting plate (8) at the end of one of the adjusting blocks (6), and the other end is in contact with the supporting plate (8) at the end of the other adjusting block (6).

9. The multi-point force measurement intelligent force measurement device according to claim 4, characterized in that: The force measuring element (2) is a pressure sensor. Five force measuring elements (2) are provided, one of which is located in the middle, and the remaining four force measuring elements (2) are distributed in a cross shape around the middle force measuring element (2).

10. The multi-point force measurement intelligent force measurement device according to claim 7, characterized in that: Both ends of the adjustment block (6) are provided with supporting plates (8), and the supporting plates (8) are located outside the bottom plate (5) and the top plate (4).

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