CN219104227U - Remote force measuring device for intelligent support - Google Patents
Remote force measuring device for intelligent support Download PDFInfo
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- CN219104227U CN219104227U CN202223185617.4U CN202223185617U CN219104227U CN 219104227 U CN219104227 U CN 219104227U CN 202223185617 U CN202223185617 U CN 202223185617U CN 219104227 U CN219104227 U CN 219104227U
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Abstract
The utility model discloses an intelligent support remote force measuring device which comprises a steel bottom basin, data acquisition and wireless transmission equipment, a support body, a large elastomer and a data conversion transmission assembly, wherein the large elastomer is arranged in the basin cavity of the steel bottom basin and is propped against the support body; the data conversion and transmission components are at least one and all connected between the large elastic body and the data acquisition and wireless transmission equipment, each data conversion and transmission component comprises a force transducer, a small elastic body and a force transmission structure, and the force transmission structure is used for transmitting force by adopting different stress areas with the small elastic body and the large elastic body and performing data conversion; compared with the prior art, the utility model adopts different stress areas between the small elastic body and the large elastic body to transfer force and perform data conversion through the force transfer structure, thereby realizing that the area of the steel bottom basin is not increased or a special sensor with a larger range is not adopted, and realizing that the large-tonnage support adopts a universal force sensor to finish detection.
Description
Technical Field
The utility model relates to the field of bridge data detection equipment, in particular to an intelligent support remote force measuring device.
Background
Along with the continuous development of traffic construction in China, bridges play an irreplaceable role in modern highway construction. The working and stress state of the bridge structure directly influence the safety, the running speed, the load level and the normal operation of the line.
The bridge support is an important connecting mechanism for connecting the bridge upper structure and the bridge lower structure, can reliably transfer the counter force and deformation (rotation angle and displacement) of the bridge upper structure to the bridge lower structure, has no force measuring function, can only rely on the traditional detection method and equipment, has relatively high cost, and cannot monitor the bridge in real time at all. In order to monitor the health degree of the bridge and the stress condition of the support at any time, in order to ensure the safety of the bridge, the stress condition of the bridge support is monitored at any time, and the support with the intelligent force measuring function is in urgent need.
Patent document with application number of CN202220829775.X discloses an intelligent support force measuring module, which comprises a bottom basin, an elastomer, a bearing plate and a force measuring component, wherein the bottom basin is provided with a basin, the side wall of the bottom basin is provided with a hole A, and the hole A is communicated with the basin; the force measuring assembly comprises a force measuring head and a force measuring sensor, which are contacted, and the force measuring head is positioned in the hole A; the elastic body is arranged in the pelvic cavity, the bearing plate is positioned above the elastic body, one end of the force measuring head is abutted with the side face of the elastic body, the bottom basin is provided with a backstop device, and when the force measuring sensor needs to be replaced, the backstop device can be abutted on the conical surface of the force measuring head after being moved downwards, so that the force measuring head is prevented from backing.
The intelligent support force measuring module can complete replacement of the force measuring sensor in place when the force measuring module receives vertical load, the stress state of the bridge is not changed, the replacement is simple and convenient, and the force measuring precision is not affected after the replacement. However, the pressure value of the force transducer is measured by directly contacting the elastic body in the basin, the measuring range of the force transducer is directly related to the bearing area of the elastic body (in inverse relation), and when the vertical bearing capacity of the support is larger, the force measurement is realized, and two schemes exist. Scheme one: the area of the elastic body is increased, the pressure intensity of the elastic body is reduced, and the pressure intensity value is ensured to be in the range of the measuring range of the sensor; scheme II: the measurement is performed by using a larger range sensor without changing the elastomer area.
The first scheme has the defects that the area of the elastic body is increased, the area of the steel bottom basin is increased, the weight of the whole support is increased, and for the support with super tonnage, the areas of the bridge pier bent cap and the support bolster are possibly increased, so that the economy is poor.
The disadvantage of scheme two is: the sensor with a larger measuring range is selected, the sensor may need special customization, the cost is higher, the replacement and maintenance are inconvenient later, and the sensor with a proper measuring range may not exist for a support with a super-tonnage.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide an intelligent support remote force measuring device so as to solve the problem of higher economic cost caused by increasing the area of an elastic body or selecting a sensor with a larger measuring range to adapt to a support with ultra-large tonnage in the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an intelligent support remote force measuring device, includes that steel end basin, data acquisition and wireless transmission equipment and bottom inlay the support body of establishing in the pelvic cavity of steel end basin, still includes:
the large elastic body is arranged in the basin cavity of the steel bottom basin and is propped against the support body;
the data conversion and transmission assembly is at least one and all connected between the large elastic body and the data acquisition and wireless transmission equipment, and each data conversion and transmission assembly comprises a force transducer connected with the data acquisition and wireless transmission equipment in a communication mode, a small elastic body connected with the force transducer and a force transmission structure connected between the small elastic body and the large elastic body, and the force transmission structure is used for transmitting force and performing data conversion by adopting different stress areas between the force transmission structure and the small elastic body and the large elastic body.
Working principle: when the support body is loaded on the upper part of the bridge, the large elastic body is extruded and equal pressure is generated in the elastic body. The large elastic body re-presses the force transmission structure and transmits the load to the small elastic body, and the small elastic body is compressed to press the force sensor contacted with the small elastic body, so that the load is transmitted to the force sensor.
Assuming that the stress area of the force transmission structure in matched contact with the large elastic body is S 1 The stress area of the force transmission structure contacted with the small elastic body in a matching way is S 2 The stress area of the large elastomer and the support body is S 3 The method comprises the steps of carrying out a first treatment on the surface of the When the load transmitted to the support body by the bridge is W, the detection pressure of the force transducer is P 2 At this time, the pressure P of the steel bottom basin 1 ＝W/S 3 Pressure F transmitted to the small elastomer 1 ＝P 1 S 1 ＝S 1 W/S 3 Pressure P transmitted to data conversion transmission assembly 2 ＝F 1 /S 2 ＝S 1 W/(S 3 S 2 ) Due to S 1 ，S 2 ，S 3 And P 2 All are known, whereby the W value can be equivalently calculated.
The formula is: p (P) 2 ＝S 1 W/(S 3 S 2 ) The load transmitted by the force sensor is related to the stress area between the force transmission structure and the small elastic body and the stress area between the force transmission structure and the large elastic body, so that the output data of the force sensor can be changed by utilizing the mathematical function relation through the two stress areas; either a large tonnage support or a small tonnage support can be detected by using a universal load cell.
Compared with the prior art, the utility model has the following beneficial effects:
the intelligent support remote force measuring device transmits force through different stress areas between the force transmission structure and the small elastic body and between the force transmission structure and the large elastic body and performs data conversion, so that the detection of the large-tonnage support by adopting a general force measuring sensor can be realized without increasing the area of a steel bottom basin or adopting a special sensor with a large range.
Drawings
FIG. 1 is a schematic illustration in semi-section of an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another embodiment of the present utility model in semi-section;
FIG. 3 is a schematic view in semi-section of another embodiment of the present utility model;
FIG. 4 is a schematic view of the force transfer pin of FIG. 2;
fig. 5 is a schematic structural view of the connection base in fig. 2.
Reference numerals in the drawings of the specification include: the device comprises a force transducer 1, a pressure-bearing cover plate 2, a small elastic body 3, a locking screw 4, a force transmission pin 5, a support body 6, a large elastic body 7, a steel bottom basin 8, a sealing ring 9, a calibration hole 10, a compression bolt 11, a data acquisition and wireless transmission device 12, an axial locking screw 13, a middle force transmission structure 14, a middle elastic body 15 and a connecting base 16.
Detailed Description
The utility model is described in further detail below by way of specific embodiments:
as shown in fig. 1, the embodiment of the utility model provides an intelligent support remote force measuring device, which comprises a steel bottom basin 8, data acquisition and wireless transmission equipment 12, a support body 6, a large elastomer 7 and a data conversion and transmission assembly, wherein the bottom of the support body 6 is embedded in the basin cavity of the steel bottom basin 8;
wherein the large elastic body 7 is arranged in the basin cavity of the steel bottom basin 8 and is propped against the support body 6;
the data conversion and transmission assembly is at least one and all connects between big elastomer 7 and data acquisition and wireless transmission equipment 12, and every data conversion and transmission assembly all includes the force transducer 1 with data acquisition and wireless transmission equipment 12 line connection or communication connection, the little elastomer 3 that links to each other with force transducer 1 and connect the force transmission structure between little elastomer 3 and big elastomer 7, and force transmission structure is in order to adopt different atress areas to transmit the power and carry out data conversion with little elastomer 3 and big elastomer 7 between.
The large elastic body 7 is pressed when the support body 6 is loaded on the upper part of the bridge and generates equal pressures in all directions inside the elastic body. The large elastic body 7 presses the force transmission structure again and transmits the load to the small elastic body 3, and the small elastic body 3 is compressed to press the load cell 1 in contact with the small elastic body, so that the load is transmitted to the load cell 1.
Assuming that the stress area of the force transmission structure in matched contact with the large elastic body 7 is S 1 The stress area of the force transmission structure contacted with the small elastic body 3 in a matching way is S 2 The stress area of the large elastic body 7 and the support body 6 is S 3 The method comprises the steps of carrying out a first treatment on the surface of the When the load transmitted to the support body 6 by the bridge is W, the detection pressure of the force transducer 1 is P 2 At this time, the pressure P of the steel bottom basin 8 1 ＝W/S 3 The pressure F transmitted to the small elastic body 3 1 ＝P 1 S 1 ＝S 1 W/S 3 Pressure P transmitted to data conversion transmission assembly 2 ＝F 1 /S 2 ＝S 1 W/(S 3 S 2 ) Due to S 1 ，S 2 ，S 3 And P 2 All are known, whereby the W value can be equivalently calculated.
The formula is: p (P) 2 ＝S 1 W/(S 3 S 2 ) The load transmitted by the force transducer 1 is related to the stress area between the force transmission structure and the small elastic body 3 and the stress area between the force transmission structure and the large elastic body 7, so that the output data of the force transducer 1 can be changed by utilizing the mathematical function relation through the two stress areas; either a large tonnage support or a small tonnage support can be detected by using the universal load cell 1.
The intelligent support remote force measuring device transmits force through a force transmission structure by adopting different stress areas with the small elastic body 3 and the large elastic body 7 and performs data conversion, so that the detection of the large-tonnage support by adopting the universal force measuring sensor 1 can be realized without increasing the area of the steel bottom basin 8 or adopting a special sensor with a large range.
The data acquisition and wireless transmission device 12 can transmit data to a remote server or configuration software to realize remote monitoring of the support.
According to another embodiment of the present utility model, as shown in fig. 1, the intelligent support remote force measuring device has a plurality of data conversion and transmission components, which are circumferentially arranged along the steel bottom basin 8, each data conversion and transmission component is provided with a mounting hole in a matching manner, wherein the mounting hole is formed on the side wall of the steel bottom basin 8 and is communicated with the basin cavity, and the small elastic body 3 and the force transmission structure are in clearance fit in the mounting hole.
In this embodiment: the number of the adopted load cells 1 is 4-8; the steel bottom basin 8 can be circular or other polygons in shape, and when the steel bottom basin 8 is circular, the plurality of force transducers 1 are arranged in a radial symmetrical way; when the steel bottom basin 8 is polygonal, the load cell 1 is arranged at the midpoint of the polygon; a plurality of force transducers 1 are adopted for simultaneous detection, which is beneficial to improving the accuracy of data detection; the force transducers 1 can be mutually corrected, and the average value of a plurality of force transducers 1 is selected as the measurement data, so that the measurement accuracy is high, and when an individual force transducer 1 is damaged, the load condition of a support can still be normally monitored, and the damaged force transducer 1 is only required to be unscrewed and replaced with a new force transducer 1 in time.
The mounting holes can be holes with the same diameters at two ends, stepped holes with different diameters at two ends, or holes with sections of any shape; specifically, the adjustment is performed according to the requirements.
As shown in fig. 1, according to another embodiment of the present utility model, each data conversion and transmission assembly further includes a pressure-bearing cover plate 2, the pressure-bearing cover plate 2 is fixedly connected to the outer wall of the steel basin bottom and has a jack communicated with the mounting hole, one end of the small elastic body 3 is embedded in the jack, and the pressure detection head of the force sensor 1 is connected in the jack.
Here, the process is carried out; the pressure detection head of the force sensor 1 is stably installed by opening the pressure-bearing cover plate 2, so that the pressure detection head of the force sensor 1 stably props against one end of the small elastic body 3 to perform data transmission, and the pressure-bearing cover plate 2 also protects the installation of the small elastic body 3 and the force transmission structure.
Further, the jack comprises a large hole section and a small hole section, wherein the large hole section is used for clearance fit with one end of the small elastic body 3;
the small hole section is communicated with the large hole section and is coaxially arranged, and the small hole section is used for being in clearance fit with the pressure detection head of the force transducer 1. Reasonable design the shape of jack, can carry out spacingly to the installation of little elastomer 3 to can be stable connect between pressure detection head, little elastomer 3, the force transmission structure of messenger's force transducer 1 and the big elastomer 7.
As shown in fig. 1, according to another embodiment of the present utility model, the remote force measuring device for an intelligent support is provided with a calibration hole 10 arranged towards the small elastic body 3 on the pressure-bearing cover plate 2, wherein the calibration hole 10 comprises an internal threaded hole section and a through hole section connected with the internal threaded hole section, the through hole section is close to the small elastic body 3, and the internal threaded hole section is used for being in threaded connection with a positioning bolt or an external injection nozzle which is abutted against the small elastic body.
When the positioning bolt is used, the positioning bolt positions the small elastic body 3 and seals the calibration hole 10 at the same time, so that air is prevented from entering the calibration hole 10.
During calibration, the internal thread hole section is externally connected with a pressure injection nozzle.
The principle, the operation method and the steps of the specific in-situ calibration are as follows;
1. principle of in-situ calibration:
the pressure-bearing cover plate 2 is provided with the calibration hole 10 communicated with the small elastic body 3, when calibration is not needed, the calibration hole 10 is internally provided with the positioning bolt and the sealing gasket, adverse factors such as air are prevented from entering and affecting the service life of the small elastic body 3, when calibration is needed, the positioning bolt and the sealing gasket are removed, the small elastic body 3 can be extruded, part of the small elastic body 3 enters the calibration hole 10, and the calibration hole 10 is sealed. When the injection device is used for injecting pressure into the calibration hole 10 through the injection nozzle, when the pressure of the injection device is equal to the pressure of the small elastic body 3, the small elastic body 3 which is originally extruded into the calibration hole 10 is pushed out, the pressure of the injection device is not increased, after the reading of the pressure gauge on the injection device is relatively stable, the pressure on the injection device is equal to the pressure of the small elastic body 3, and the calibration of the force sensor 1 is completed by screwing the force sensor 1 to make the reading of the force sensor equal to the reading of the pressure gauge on the injection device.
2. The specific operation method and steps of the in-situ calibration are as follows:
step one: removing the positioning bolts and the sealing gaskets in the calibration holes 10, and then installing the injection nozzle in the calibration holes 10;
step two: the small elastic body 3 is deformed by using injection pressure equipment to carry out injection pressure into the calibration hole 10 through an injection pressure nozzle until the value of a pressure gauge on the injection pressure equipment is stable and unchanged, and the value of the pressure gauge shows the real pressure value of the small elastic body 3;
step three: screwing the force transducer 1 until the data on the force transducer 1 is the same as the pressure value on the pressure gauge of the injection equipment, namely completing the calibration of the force transducer 1;
step four: after the calibration of the force sensor 1 to be tested is completed, the injection nozzle is removed, and the force measuring device can be normally used after the positioning bolts and the sealing gaskets are reinstalled.
As shown in fig. 1, according to another embodiment of the present utility model, the force transmission structure includes a force transmission pin 5 connected between the small elastic body 3 and the large elastic body 7, the cross section of the force transmission pin 5 is identical to the cross section of the mounting hole, the force transmission pin 5 is mounted in the mounting hole, one end of the force transmission pin abuts against the small elastic body 3, the other end abuts against the large elastic body 7, and the force transmission pin 5 and the mounting hole adopt reasonable clearance fit to reduce friction resistance and force measurement errors.
Specifically, in the present embodiment: the force transmission pin 5 comprises a big head section and a small head section; one end of the big head section is propped against the small elastic body 3; one end of the small head section is propped against the large elastic body 7, and the other end of the small head section is connected with the other end of the large head section.
The force transmission pin 5 is formed integrally from a large head section and a small head section, so that the force transmission pin 5 has a different bearing surface area from the small elastic body 3 and the large elastic body 7, and the transmitted data are converted while the force is transmitted.
Here: the big head section, the small elastic body 3 and the big elastic body 7 are all in cylindrical structures for analysis and explanation, and the diameters of the small elastic body 3 and the big head section are kept the same, when the diameter of the small elastic body 3 is changed, the big head section is correspondingly changed, so that the data transmission between the small elastic body 3 and the big head section is more stable.
The large elastic body 7 is pressed when the support body 6 is loaded on the upper part of the bridge and generates equal pressures in all directions inside the elastic body. The large elastic body 7 presses the force transmission pin 5 again and transmits the load to the small elastic body 3, and the small elastic body 3 is compressed to press the load cell 1 in contact with the small elastic body, so that the load is transmitted to the load cell 1. A step of
Let the diameter of the contact end of the force transmission pin 5 and the large elastic body 7 be phid 1 The stress area is s1=pi d 1 2 4, the diameter of the contact end with the small elastic body 3 is phid 2 The stress area is S 2 ＝πd 2 2 4; diameter phid of large elastic body 7 3 The stress area is S 3 ＝πd 3 2 And/4, when the load transmitted to the support body 6 by the bridge is W, the reading of the load cell 1 is P 2 At this time, the pressure P of the steel bottom basin 8 1 ＝W/S 3 The pressure F transmitted to the force transmission pin 5 1 ＝P 1 S 1 ＝S 1 W/S 3 Pressure P transmitted to load cell 1 2 ＝F 1 /S 2 ＝S 1 W/(S 3 S 2 )＝4d 1 2 W/(πd 2 2 d 3 2 ) Because of phid 1 ，φd 2 ，φd 3 And P 2 All are known, whereby the W value can be equivalently calculated.
W＝P 2 S 3 S 2 /S 1 ＝P 2 πd 3 2 d 2 2 /(4d 1 2 )＝(P 2 πd 3 2 /4)*(d 2 2 /d 1 2 )
The formula is: p (P) 2 ＝[4W/(πd 3 2 )]*(d 1 2 /d 2 2 )，The load of the force sensor 1 is related to the square ratio of the diameters of the two ends of the force transmission pin 5, so that the measurement data of the force sensor 1 can be changed by changing the ratio of the diameters of the two ends of the force transmission pin 5 by utilizing the mathematical function relation (namely, a general force sensor 1 can be adopted for a large-tonnage support or a small-tonnage support.)
When the force measuring pin adopts cylindrical pins with equal diameters at two ends, namely d 1 ＝d 2 At the time P 2 ＝4W/(πd 3 2 ) The pressure of the small elastic body 3 measured by the force transducer 1 is equal to the pressure generated by the large elastic body 7 when the load transmitted to the support body 6 by the bridge is W (namely, the measured data of the force transducer 1 are not scaled, which is equivalent to the pressure value of the large elastic body 7 measured by the force transducer 1 directly); when the diameter of one end of the force transmission pin 5, which is in contact with the large elastic body 7, is unchanged, the diameter of the other end of the force transmission pin 5 is changed, and the diameter of the small elastic body 3A is changed along with the change, so that the load transmitted to the force transducer 1 can be changed, and when the force measuring device is applied to a bridge support with larger load, the diameter of the small elastic body 3 is increased, the pressure transmitted to the force transducer 1 can be reduced, and thus, the load value transmitted to the force transducer 1 can be ensured to be always in a reasonable interval; on the contrary, when the force measuring device is used in a bridge support with smaller load, the diameter of the small elastic body 3 is reduced, so that the pressure transmitted to the force measuring sensor 1 can be increased, and the load value transmitted to the force measuring sensor 1 can be ensured to be always in a reasonable interval.
As shown in fig. 1, according to another embodiment of the present utility model, the intelligent support remote force measuring device is provided with a sealing ring 9 that is sleeved on the top edge of the large elastic body 7 and contacts with the inner wall of the pelvis and the bottom of the support body 6; the large elastic body 7 is sealed in the closed steel bottom basin 8 to be isolated from air, so that the durability is good and the service life is long.
The steel bottom basin 8 is provided with a locking screw 4, the locking screw 4 is separated from the force transmission pin 5 under normal conditions, and when the load cell 1 needs to be replaced, the locking screw 4 can be abutted with the force transmission pin 5 after moving downwards and kept locked and fixed; and the pressure-bearing cover plate 2 and the steel bottom basin 8 are locked and fixed by adopting a compression screw.
The load cells 1 are arranged on the side face of the steel bottom basin 8, and the arrangement number is determined according to the bearing capacity of the support, and is generally 4-8. The steel bottom basin 8 may be circular or other polygonal in shape. When the steel bottom basin 8 is circular, a radial symmetrical arrangement mode is adopted, and when the steel bottom basin 8 is polygonal, the force transducer 1 is arranged at the midpoint of the polygon.
The force transducer 1 is connected with the data acquisition and wireless transmission equipment 12, and can transmit data to a remote server or configuration software to realize remote monitoring of the support.
The force measuring device provided by the utility model has the advantages that the installation, replacement and calibration of the force measuring sensor 1 are simple and convenient. The replacement and calibration of the force transducer 1 can be completely carried out under the normal operation state of the bridge, the beam body does not need to be jacked, and the force measuring precision is not affected after the replacement.
Aiming at the bridge support with ultra-large tonnage, the measuring range of the force measuring device required by the force measuring device is larger, no suitable force measuring sensor 1 exists at present, or the force measuring sensor 1 of the type has high price, needs customization, has long period, is difficult to replace and the like, the force measuring device is characterized in that the force measuring device is used for measuring the force by selecting the proper (d 1 2 /d 2 2 ) The ratio can perfectly solve the problem of the measuring range of the sensor.
According to the method for quickly replacing and calibrating the intelligent support force measuring device, under the normal operation state of the bridge support, the bridge is not jacked, and the force measuring sensor 1 and the small elastic body 3 are quickly replaced at the bridge position, and the method comprises the following steps:
step one: the locking screw 4 is adjusted to move downwards in the threaded hole, so that the end part of the locking screw is abutted with the force transmission pin 5 and locked and fixed;
step two: unscrewing the force transducer 1, releasing the threaded connection relation between the force transducer 1 and the pressure-bearing cover plate 2, and then removing the force transducer 1 from the pressure-bearing cover plate 2.
Step three: removing the compression screws of the pressure-bearing cover plate 2 and the steel bottom basin 8, removing the pressure-bearing cover plate 2, and then removing the small elastomer 3;
step four: after the new small elastic body 3 is replaced, the pressure-bearing cover plate 2 is reinstalled on the steel bottom basin 8;
step five: a new load cell 1 is replaced, and the new load cell 1 is installed on the pressure-transmitting cover plate 2;
step six: by screwing the threads of the force transducer 1, the force transducer 1 is tightly propped against the small elastic body 3, and the force transducer 1 is continuously screwed to ensure that the reading of the force transducer is equal to the reading before replacement or the reading of other sensors, namely the calibration of the force transducer 1 after replacement is completed.
Step seven: and adjusting the locking screw 4 to move upwards in the positioning hole, so as to complete the replacement of the load cell 1 and the small rubber body.
As shown in fig. 2, according to another embodiment of the present utility model, the intelligent remote force measuring device for support is provided, wherein the steel bottom basin 8 is not connected with the force transmission pin 5 by using a locking screw 4, and the pressure-bearing cover plate 2 is not connected with the steel bottom basin 8 by using a pressing screw; an axial locking screw 13 which passes through the side wall of the steel bottom basin 8 and then enters the mounting hole to be propped against the force transmission structure is connected to the pressure-bearing cover plate 2; specifically, one end of the axial locking screw 13 is left on the outer wall of the pressure-bearing cover plate 2, and the other end of the axial locking screw is propped against the end part of the large hole section of the force transmission pin 5 in the force transmission structure, which is far away from the small head section, so that the pressure-bearing cover plate 2 can be reinforced by only using one axial locking screw 13, and the purpose of locking the force transmission pin 5 can be achieved; because the big hole section and the small head section of the force transmission pin 5 are columnar, the axial locking screw 13 has better stability on the force transmission pin 5 when the locking position of the force transmission pin 5 is locked compared with the locking screw 4 in the previous embodiment.
A connecting base 16 (the structure of the connecting base 16 is shown in fig. 4) can be additionally arranged between the steel bottom basin 8 and the pressure-bearing cover plate 2, the steel bottom basin 8 and the pressure-bearing cover plate 2 are connected through the connecting base 16, a through hole for accommodating the small elastomer 3 and embedding the large head section of the force transmission pin 5 is arranged in the connecting base 16, and a threaded hole for allowing the axial locking screw 13 to pass through is further formed in the connecting base 16.
With reference to fig. 5, a disc section with larger diameter can be additionally arranged between the big head section and the small head section of the force transmission pin 5, the big head section and the small head section of the force transmission pin 5 are connected through the disc section, the small head section is propped against the big elastic body 7, the big head section is arranged in the through hole of the connecting base 16, the disc section is positioned between the inner end surface of the mounting hole of the steel bottom basin 8 and the connecting base 16, and a certain gap is reserved between the force transmission pin 5 and the connecting base for providing reasonable locking space; meanwhile, the small elastic body 3 is also arranged in the connecting base 16, one end of the small elastic body 3 is propped against the big head section of the force transmission pin 5, and the other end of the small elastic body is flush with the outer end face of the connecting base 16.
The pressure-bearing cover plate 2 is preferably circular and is connected with the connecting base 16 by a compression screw.
The through-hole of the alignment hole 10 runs here through the connection base 16; when the force measuring device is used normally, the calibration holes 10 are provided with positioning bolts, and the positioning bolts can position the connecting base 16 and prevent air from entering the small elastic body 3.
As shown in fig. 3, according to another embodiment of the present utility model, at least one middle force conversion assembly may be further disposed between the force transmission structure and the large elastic body 7, and the middle force conversion assemblies are sequentially and linearly disposed between the force transmission structure and the large elastic body 7 when the number of the middle force conversion assemblies is greater than one, and the middle force conversion assemblies are used to perform multi-stage force conversion in cooperation with the small elastic body 3 and the large elastic body 7.
The multi-stage force conversion is carried out through the cooperation of the small elastic body 3, the plurality of middle force conversion assemblies, the force transmission structure and the large elastic body 7, so that the intelligent support remote force measuring device can adopt the universal force measuring sensor 1 to detect a support with larger tonnage.
Wherein, the middle force conversion assembly all includes middle elastomer 15 and middle force transmission structure 14 that links to each other with middle elastomer 15, and middle elastomer 15 and force transmission structure in the middle force conversion assembly of head end are located, and middle force transmission structure 14 and big elastomer 7 in the middle force conversion assembly of terminal link to each other.
In this embodiment: the middle force transmission structure 14 is specifically the same structure as the force transmission structure, except that the size thereof is adjusted according to actual requirements; the middle elastic body 15 can have the same structure as the small elastic body 3, and the size thereof can be adjusted according to the actual requirements. The number of the middle force conversion components is one, three-level force conversion is carried out through the cooperation of the small elastic body 3, the middle force transmission structure 14, the middle elastic body 15, the force transmission structure and the large elastic body 7, wherein the stress area between the large elastic body 7 and the force transmission structure is smaller than that between the force transmission structure and the middle elastic body 15, the stress area between the force transmission structure and the middle elastic body 15 is equal to that between the middle elastic body 15 and the middle force transmission structure 14, and the stress area between the middle elastic body 15 and the middle force transmission structure 14 is smaller than that between the middle force transmission structure 14 and the small elastic body 3, so that the intelligent support remote force measuring device can adopt the universal force sensor 1 for a support with larger tonnage to detect.
In this embodiment, the axial locking screw 13 and the locking screw 4 may be used in combination, where the axial locking screw 13 is used to reinforce the pressure-bearing cover plate 2 and lock and fix the force transmission structure, and the remaining middle force transmission structure 14 is locked and fixed by using the locking screw 4.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (9)
1. The utility model provides an intelligent support remote force measuring device, includes that steel end basin, data acquisition and wireless transmission equipment and bottom inlay the support body of establishing in the pelvic cavity of steel end basin, its characterized in that still includes:
the large elastic body is arranged in the basin cavity of the steel bottom basin and is propped against the support body;
the data conversion and transmission assembly is at least one and all connected between the large elastic body and the data acquisition and wireless transmission equipment, and each data conversion and transmission assembly comprises a force transducer connected with the data acquisition and wireless transmission equipment in a communication mode, a small elastic body connected with the force transducer and a force transmission structure connected between the small elastic body and the large elastic body, and the force transmission structure is used for transmitting force and performing data conversion by adopting different stress areas between the force transmission structure and the small elastic body and the large elastic body.
2. An intelligent stand remote force measuring apparatus as claimed in claim 1, wherein: the data conversion and transmission components are arranged in a plurality of ways along the circumferential direction of the steel bottom basin, each data conversion and transmission component is provided with a mounting hole which is formed in the side wall of the steel bottom basin and communicated with the basin cavity in a matched mode, and the small elastic body and the force transmission structure are in clearance fit in the mounting hole.
3. The intelligent stand remote force measurement apparatus of claim 2 wherein each data conversion transfer assembly further comprises:
the pressure-bearing cover plate is fixedly connected to the outer wall of the steel basin bottom and provided with a jack communicated with the mounting hole, one end of the small elastic body is embedded in the jack, and the pressure detection head of the force sensor is connected in the jack.
4. The intelligent stand remote force measurement device of claim 1, wherein the force transfer structure comprises a force transfer pin coupled between the small elastomer and the large elastomer, the force transfer pin comprising:
a large head section, one end of which is propped against the small elastomer;
and one end of the small head section is propped against the large elastic body, and the other end of the small head section is connected with the other end of the large head section.
5. The intelligent support remote force measuring device according to claim 3, wherein the pressure-bearing cover plate is provided with a calibration hole arranged towards the small elastic body, the calibration hole comprises an internal threaded hole section and a through hole section connected with the internal threaded hole section, the through hole section is close to the small elastic body, and the internal threaded hole section is used for being in threaded connection with a positioning bolt or an external injection nozzle which is abutted against the small elastic body.
6. A smart stand remote force measurement device according to claim 3, wherein the receptacle comprises:
a large hole section for clearance fitting with one end of the small elastomer;
and the small hole section is communicated with the large hole section and is coaxially arranged, and the small hole section is used for being in clearance fit with a pressure detection head of the force transducer.
7. The intelligent support remote force measuring apparatus of claim 1, wherein at least one middle force conversion assembly can be further arranged between the force transmission structure and the large elastic body, the middle force conversion assemblies are sequentially and linearly arranged between the force transmission structure and the large elastic body when the number of the middle force conversion assemblies is larger than one, and the plurality of middle force conversion assemblies are matched with the small elastic body and the large elastic body to perform multistage force conversion.
8. The intelligent support remote force measuring apparatus of claim 7, wherein the central force conversion assemblies each comprise a central elastic body and a central force transfer structure connected with the central elastic body, the central elastic body and the force transfer structure in the central force conversion assembly at the head end, and the central force transfer structure in the central force conversion assembly at the tail end is connected with the large elastic body.
9. The intelligent support remote force measuring device according to claim 3, wherein the pressure-bearing cover plate is connected with an axial locking screw which penetrates through the side wall of the steel bottom basin and then enters the mounting hole to be abutted against the force transmission structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223185617.4U CN219104227U (en) | 2022-11-30 | 2022-11-30 | Remote force measuring device for intelligent support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223185617.4U CN219104227U (en) | 2022-11-30 | 2022-11-30 | Remote force measuring device for intelligent support |
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| CN219104227U true CN219104227U (en) | 2023-05-30 |
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| CN202223185617.4U Active CN219104227U (en) | 2022-11-30 | 2022-11-30 | Remote force measuring device for intelligent support |
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