CN213925835U - Vertical force measuring support with replaceable force measuring element - Google Patents
Vertical force measuring support with replaceable force measuring element Download PDFInfo
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- CN213925835U CN213925835U CN202022341239.9U CN202022341239U CN213925835U CN 213925835 U CN213925835 U CN 213925835U CN 202022341239 U CN202022341239 U CN 202022341239U CN 213925835 U CN213925835 U CN 213925835U
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Abstract
A vertical force measuring support with replaceable force measuring elements is provided with a support main body, wherein multiple layers of base plates are matched with one another layer by layer, a bottommost base plate and a penultimate base plate are in a fixed state, the force measuring elements are arranged between the bottommost base plate and the penultimate base plate, an inner cavity which penetrates through the side face of the bottommost base plate and is used for replacement and installation of the side force elements is formed in the bottommost base plate, an installation opening communicated with the inner cavity is formed in the upper surface of the bottommost base plate, each force measuring element comprises a drawing plate, a baffle, a support plate, a force measuring sensor and a central pressing plate, the support plate and the baffle are arranged on the surface of the drawing plate, the force measuring sensors are fixed above the support plates, and the support force measurement is realized through the measurement of the local stress of the support and the integral static calibration; meanwhile, under the condition that the function of the force measuring element is lost, the force measuring element can be replaced without the need of top beam unloading and the replacement of the whole support, and a reliable monitoring technology with the whole life cycle is provided for bridges or buildings.
Description
Technical Field
The utility model relates to a bridge structures or building technical field, what specifically say so is a removable vertical dynamometry support of dynamometry element.
Background
Health monitoring plays an increasingly important role in the safe operation of bridges and buildings. The force-measuring support can realize the measurement of the vertical load borne by the support and is an important measurement carrier. The existing force measuring support is mostly carried out by adopting a strain gauge, a standard force measuring sensor and the like, but once a force measuring component is damaged, the force measuring function of the support is about to lose and is difficult to replace, and the cost is obviously increased unless the force measuring support is integrally replaced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a vertical force measuring support with a replaceable force measuring element, which realizes the support force measurement through the measurement of the local stress of the support and the overall static calibration; meanwhile, under the condition that the function of the force measuring element is lost, the force measuring element can be replaced without the need of top beam unloading and the replacement of the whole support, and a reliable monitoring technology with the whole life cycle is provided for bridges or buildings.
In order to realize the technical purpose, the adopted technical scheme is as follows: a vertical force measuring support with replaceable force measuring elements is provided with a support main body, wherein a plurality of layers of base plates are arranged in a layer-by-layer matched manner, a bottommost base plate and a penultimate base plate are in a fixed state, the force measuring elements are arranged between the bottommost base plate and the penultimate base plate, an inner cavity which penetrates through the side face of the bottommost base plate and is used for replacing and installing the side force elements is arranged in the bottommost base plate, an installation opening communicated with the inner cavity is formed in the upper surface of the bottommost base plate, each force measuring element comprises a drawing plate, a baffle, a support plate, a force measuring sensor and a central pressing plate, the support plate and the baffle are arranged on the surface of the drawing plate, the force measuring sensor is fixed above the support plate, a central pressing plate with a non-metal central sliding plate is arranged above the force measuring sensor, the drawing plate is pushed into the inner cavity and is detachably fixed on the bottommost base plate, so that the central non-metal plate of the central pressing plate is exposed out of the installation opening and forms a central friction pair with the metal sliding plate on the bottom face of the penultimate base plate, the force-measuring stress point of the force-measuring sensor is coincided with the axis of the support main body, and the baffle plate props against the support plate and is detachably fixed on the base plate at the lowest layer and does not bear vertical bearing force.
The bottom surface of the supporting plate is contacted with the top surface of the drawing plate through an inclined surface inclined towards the pushing-in direction.
The inner cavity consists of a semi-cylindrical cavity and a cuboid cavity which are communicated, the diameter of the semi-cylindrical cavity is equal to or less than the width of the cuboid cavity, and the semi-cylindrical cavity is used for placing a force measuring sensor.
The baffle is provided with a hole groove for leading out a lead of the force sensor.
The baffle is fixed on the bottom layer seat plate through bolts.
The drawing plate is fixed on the bottom layer seat plate through bolts.
The drawing plate is provided with a threaded hole for applying an external force tool.
The utility model has the advantages that:
1) the force sensor is placed and fixed in the center of the base plate at the lowest layer of the support, part of vertical force of the support is transmitted to the force sensor through the central non-metal sliding plate, the vertical pressure borne by the central non-metal sliding plate is measured, then the relation between the stress of the force sensor and the integral vertical stress of the support is determined through vertical calibration, and the integral vertical stress of the support is obtained through the stress of the sensor.
2) By utilizing the holy-vern principle, the specific distribution of the load only influences the stress distribution near the load action area, and basically only relates to the resultant force and resultant moment of the load at a place slightly far away from the load action area. Therefore, above-mentioned utility model discloses lean on the bottom position with force cell sensor setting at the center of support body, bedplate central cavity puts promptly, force cell sensor's top center clamp plate, the nonmetal slide in center, second floor bedplate and the bottom bedplate are in the stationary state all the time, and keep away from the plane slip and the vertical rotational position of support, consequently, the change of support motion state, force cell sensor a little far away from superstructure load action area is only relevant with whole load promptly support superstructure load, show the influence that reduces the dynamometry deviation that the change of support motion state leads to.
3) The fixed plane friction pair including the central non-metal sliding plate at the top of the force measuring sensor is always fixed, so that the central non-metal sliding plate is prevented from being abraded, and the stability of force measurement is ensured.
4) When the force sensor fails, the connecting bolt of the drawing plate and the base plate at the lowest layer is screwed out, external force is applied to the drawing plate to take out the drawing plate, the force of the force sensor is small, and the drawing plate is in contact with the supporting plate through the inclined surface, so that the force sensor can be unloaded by applying small external force of the drawing plate without a top beam. And then screwing out the connecting bolt of the baffle and the base plate at the lowest layer, and sequentially taking out the baffle, the supporting plate, the force cell, the central pressing plate and the central non-metal sliding plate. And replacing the new force measuring sensor, assembling in situ, applying thrust outside the drawing plate through the inclined surface, fixing the drawing plate to the original central position, and then sequentially screwing the connecting bolts of the drawing plate, the baffle and the base plate at the lowest layer to finish the replacement of the force measuring sensor.
5) In the whole replacement process, only the force measuring sensors are replaced, the specification and the model of the two force measuring sensors are completely consistent, other parts are not replaced, and the positions of the other parts are unchanged, so that the force measuring calibration of the support before and after replacement is consistent, and the force measuring function of the support in the whole life cycle is realized.
Drawings
Fig. 1 is a C-C sectional view of fig. 3 in embodiment 1 of the present invention;
fig. 2 is a sectional view taken along line a-a of fig. 1 according to embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view of a detail of the embodiment of the present invention taken along line B-B of FIG. 2;
in the figure: 1. the device comprises a base plate, 2, a drawing plate, 3, a baffle, 4, a supporting plate, 5, a force measuring sensor, 5-1, a force measuring sensor lead, 6, a central pressing plate, 7, a central non-metal sliding plate, 8, a C-shaped non-metal sliding plate, 9, a lower base plate, 10, a lower spherical surface rotating friction pair, 11, a middle base plate, 12, an upper plane sliding friction pair, 13, an upper base plate, 14, a sealing ring, 15, a drawing plate bolt, 16 and a baffle bolt.
Detailed Description
As shown in the figure, the vertical force measuring support with the replaceable force measuring element is provided with a support main body, wherein a plurality of layers of base plates are arranged in a matched manner layer by layer, a base plate at the lowest layer (a base plate 1) and a base plate at the penultimate layer (a lower base plate 9) are in a fixed state, the fixed state means that the base plate at the lowest layer and the base plate at the penultimate layer cannot rotate or slide, the force measuring element is arranged between the base plate at the lowest layer and the base plate at the penultimate layer, an inner cavity which penetrates through the side face of the base plate at the lowest layer and is used for replacing and installing the side force element is arranged in the base plate at the lowest layer, an installing port communicated with the inner cavity is arranged on the upper surface of the base plate at the lowest layer, the optimal shape of the installing port is consistent with the longitudinal section shape of the inner cavity, the central pressing plate can conveniently generate obstruction when the central pressing plate moves towards the center of the base plate at the lowest layer, the force measuring element comprises a drawing plate 2, a baffle plate 3, a supporting plate 4, a force measuring sensor 5 and a central pressing plate 6, the surface of the drawing plate 2 is provided with a supporting plate 4 and a baffle 3, a force measuring sensor 5 is fixed above the supporting plate 4, a central pressing plate 6 with a central non-metal sliding plate 7 is arranged above the force measuring sensor 5, the drawing plate 2 is pushed into an inner cavity and detachably fixed on the lowest layer seat plate, the central non-metal plate 7 of the central pressing plate 6 is exposed out of an installation opening and forms a central friction pair with a metal sliding plate on the bottom surface of the penultimate seat plate, the force measuring stress point of the force measuring sensor is coincided with the axis of the support main body, and the baffle 3 is propped against the supporting plate 4 and detachably fixed on the lowest layer seat plate and does not bear vertical bearing force, namely the top surface of the baffle 3 is slightly lower than the bottom surface of the metal sliding plate of the penultimate seat plate and does not contact with the metal sliding plate.
After the mounting opening is arranged on the upper surface of the bottom layer seat plate, the non-metal sliding plate on the bottom layer seat plate adopts a C-shaped non-metal sliding plate 8, and the C-shaped non-metal sliding plate and a stainless steel sliding plate pasted on the bottom surface of the penultimate seat plate form a fixed plane friction pair.
The bottom surface of the support plate 4 is in contact with the top surface of the drawer plate by an inclined surface inclined in the pushing direction.
The inner cavity is composed of a semi-cylindrical cavity and a rectangular cavity which are communicated, the diameter of the semi-cylindrical cavity is equal to or less than the width of the rectangular cavity, the force measuring sensor is circular, the inner cavity with the shape is convenient for installation and replacement of the force measuring element, the semi-cylindrical cavity is used for placing the force measuring sensor, and the width of the inner cavity is slightly larger than the outline size of the force measuring sensor and the width of the pulling plate and the baffle plate.
The baffle 3 is provided with a hole groove for leading out a force sensor lead 5-1, so that the force sensor lead 5-1 can be conveniently led out to be connected with an external display element or a power supply element.
The baffle 3 is fixed on the bottom layer base plate through bolts, and the baffle 3 is taken down from the bottom layer base plate by removing the bolts.
The drawing plate 2 is fixed on the bottom layer seat plate through bolts, and the drawing plate 2 can be drawn out of the inner cavity by removing the bolts.
The drawing plate 2 is provided with a threaded hole for applying an external force tool, so that the drawing plate 2 can be drawn out conveniently by using the external force tool.
The support body can adopt a steel support, a ball support or a rubber support.
The depth of the inner cavity is consistent from outside to inside, the bottom of the inner cavity is a plane, the bottom surface of the drawing plate 2 is also a plane, the size of the inner cavity and the size of the baffle are designed, so that the force-measuring stress point of the force-measuring sensor is coincided with the axis of the support main body after the baffle is completely pushed in, and matched boss structures can be arranged on the baffle and the drawing plate, so that the position of the force-measuring sensor after replacement can be ensured to be unchanged.
Example 1
A vertical loadball mount with replaceable load cells is given, as shown in figures 1, 2, 3. The device mainly comprises a base plate 1, a drawing plate 2, a baffle 3, a supporting plate 4, a force measuring sensor 5, a force measuring sensor lead 5-1, a central pressing plate 6, a central non-metal sliding plate 7, a C-shaped non-metal sliding plate 8, a lower base plate 9, a lower spherical surface rotating friction pair 10, a middle base plate 11, an upper plane sliding friction pair 12, an upper base plate 13, a sealing ring 14, a drawing plate bolt 15, a baffle bolt 16 and the like.
Go up bedplate 13, well bedplate 11, lower seat is anti-9 and bedplate 11 from last to the axial symmetry setting down, go up bedplate 13 and well bedplate 11 between be equipped with the vice 12 of plane sliding friction, well bedplate 11 and lower bedplate 9 between be equipped with down sphere rotational friction vice 10, go up the vice 12 of plane sliding friction and the vice vertical pressure-bearing friction of constituteing the support jointly of sphere rotational friction pair 10 down, possess vertical bearing, the longitudinal bridge is to the slip, vertical rotation function, every friction is vice all including non-metallic slide and stainless steel slide. The fixed plane friction pair consists of a fixed plane stainless steel sliding plate attached to the bottom of the lower seat plate 9, a central non-metal sliding plate 7 and a C-shaped non-metal sliding plate 8, wherein the central non-metal sliding plate 7 and the C-shaped non-metal sliding plate are positioned on the same plane and are respectively embedded on the central pressing plate 6, and the C-shaped non-metal sliding plate 8 is embedded on the base plate 1 (see figure 2).
A semi-cylinder and rectangular inner cavity is formed in one side direction of the center of the support base plate 1, and a force measuring sensor 5, a central pressing plate 6 and a central non-metal sliding plate 7 which are vertically arranged are arranged in the center of the semi-cylinder inner cavity and the center of the fixed plane friction pair; the base plate 1 is provided with a drawing plate 2 and a baffle plate 3 in the inner cavity of the rectangular body along one side direction, and is fixed with the base plate 1 by a drawing plate bolt 15 and a baffle plate bolt 16. The force measuring sensor 5 is fixed on the support plate 4, and the bottom surface of the support plate 4 is in inclined surface contact with the top surface of the drawing plate 2.
The central non-metal sliding plate 7 embedded in the central pressing plate 6 and the C-shaped non-metal sliding plate 8 embedded in the base plate 1 are positioned on the same plane and bear the vertical load of the support together, and one part of the vertical load of the support is transmitted to the force transducer 5 through the central non-metal sliding plate 7 and the central pressing plate 6, so that the vertical force borne by the central non-metal sliding plate 7 is measured. Through a vertical calibration test, the relation between the stress of the central non-metal sliding plate 7 (namely the force value measured by the force sensor 5) and the integral vertical stress of the support is determined, and finally the integral vertical stress condition of the support is obtained through the stress reverse thrust of the force sensor 5, so that the support has a vertical force measuring function.
By utilizing the holy-vern principle, the specific distribution of the load only influences the stress distribution near the load action area, and basically only relates to the resultant force and resultant moment of the load at a place slightly far away from the load action area. The force measuring sensor 5 is arranged and fixed in the central inner cavity of the base plate 1, the top fixed plane friction pair of the force measuring sensor 5 is always in a fixed state, the problem of abrasion of a non-metal sliding plate caused by sliding or rotating is solved, and the plane sliding and vertical rotating positions of the support are far away from, so that the change of the motion state of the support is realized, the force measuring sensor 5 which is slightly far away from the upper structure load acting area is only related to the whole load, namely the upper structure load of the support, and the influence of force measuring deviation caused by the change of the motion state of the support is obviously reduced.
When the force sensor 5 fails, the draw plate bolt 15 between the draw plate 2 and the base plate 1 is screwed out, external force is applied to the draw plate 2 to take out the draw plate 2, and the force sensor 5 is applied with small external force to unload the force sensor 5 without a top beam because the force of the force sensor 5 is small and the draw plate 2 is in contact with the support plate 4 through an inclined surface. And screwing out the baffle bolt 16 of the baffle 3 and the base plate 1, and sequentially taking out the baffle 3, the support plate 4, the force measuring sensor 5, the central pressing plate 6 and the central non-metal sliding plate 7. And replacing the new load cell 5, assembling in situ, applying thrust outside the drawing plate 2 through the inclined surface, fixing the drawing plate 2, the baffle plate 3 and the drawing plate bolt 15 and the baffle plate bolt 16 of the base plate 1 to the original central position, and screwing the drawing plate 2, the baffle plate 3 and the base plate 1 in sequence to finish the replacement of the load cell 5.
In the whole replacement process, only the force measuring sensor 5 is replaced, the specification and the model of the two force measuring sensors 5 are completely consistent, other parts are not replaced, and the positions are unchanged, so that the force measuring calibration of the support before and after replacement is consistent, and the force measuring function of the support in the whole life cycle is realized.
The vertical dynamometry ball-shaped support with the replaceable dynamometry element can realize vertical bearing, sliding in the moving direction and vertical rotation of the support under normal conditions, and meanwhile, when the dynamometry element fails, the replacement of the dynamometry element can be realized without a top beam, so that the support has a vertical dynamometry function all the time in the whole life cycle.
Claims (7)
1. The utility model provides a removable vertical dynamometry support of dynamometry element, is equipped with the support main part that multilayer bedplate successive layer cooperateed the setting, and lower floor's bedplate is in the fixed state with second layer bedplate from last, is equipped with dynamometry element, its characterized in that at lower floor's bedplate and from being equipped with between the second layer bedplate from last: an inner cavity which runs through the side surface of the base plate at the lowest layer and is used for replacing and installing a side force element is arranged in the base plate at the lowest layer, an installation opening communicated with the inner cavity is arranged on the upper surface of the base plate at the lowest layer, the force element comprises a drawing plate, a baffle plate, a supporting plate, a force sensor and a central pressing plate, a support plate and a baffle plate are arranged on the surface of the drawing plate, a force measuring sensor is fixed above the support plate, a central pressure plate with a central non-metal sliding plate is arranged above the force measuring sensor, the drawing plate is pushed into the inner cavity and is detachably fixed on the base plate at the lowest layer, the central non-metal plate of the central pressure plate is exposed out of the mounting hole and forms a central friction pair with the metal sliding plate on the bottom surface of the base plate at the second layer from the lowest to the lowest, the force-measuring stress point of the force-measuring sensor is coincided with the axis of the support main body, and the baffle plate props against the support plate and is detachably fixed on the base plate at the lowest layer and does not bear vertical bearing force.
2. A vertical load cell holder, as claimed in claim 1, wherein: the bottom surface of the supporting plate is contacted with the top surface of the drawing plate through an inclined surface inclined towards the pushing-in direction.
3. A vertical load cell holder, as claimed in claim 1, wherein: the inner cavity consists of a semi-cylindrical cavity and a cuboid cavity which are communicated, the diameter of the semi-cylindrical cavity is equal to or less than the width of the cuboid cavity, and the semi-cylindrical cavity is used for placing a force measuring sensor.
4. A vertical load cell holder, as claimed in claim 1, wherein: the baffle is provided with a hole groove for leading out a lead of the force sensor.
5. A vertical load cell holder, as claimed in claim 1, wherein: the baffle is fixed on the bottom layer seat plate through bolts.
6. A vertical load cell holder, as claimed in claim 1, wherein: the drawing plate is fixed on the bottom layer seat plate through bolts.
7. A vertical load cell holder, as claimed in claim 1, wherein: the drawing plate is provided with a threaded hole for applying an external force tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022341239.9U CN213925835U (en) | 2020-10-20 | 2020-10-20 | Vertical force measuring support with replaceable force measuring element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022341239.9U CN213925835U (en) | 2020-10-20 | 2020-10-20 | Vertical force measuring support with replaceable force measuring element |
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| CN213925835U true CN213925835U (en) | 2021-08-10 |
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| CN202022341239.9U Active CN213925835U (en) | 2020-10-20 | 2020-10-20 | Vertical force measuring support with replaceable force measuring element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088273A (en) * | 2021-11-11 | 2022-02-25 | 株洲时代新材料科技股份有限公司 | Force measuring support and using method thereof |
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2020
- 2020-10-20 CN CN202022341239.9U patent/CN213925835U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088273A (en) * | 2021-11-11 | 2022-02-25 | 株洲时代新材料科技股份有限公司 | Force measuring support and using method thereof |
| CN114088273B (en) * | 2021-11-11 | 2024-03-12 | 株洲时代新材料科技股份有限公司 | Force measuring support and use method thereof |
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| GR01 | Patent grant | ||
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Address after: 201 Ligang building, 82 West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone), 300450 Patentee after: CHINA RAILWAY DESIGN Corp. Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 201 Ligang building, 82 West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone), 300450 Patentee before: CHINA RAILWAY DESIGN Corp. Patentee before: Luoyang Shuangrui special equipment Co., Ltd |
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| CP01 | Change in the name or title of a patent holder |