CN217384525U

CN217384525U - Bridge dynamometry support

Info

Publication number: CN217384525U
Application number: CN202220430493.2U
Authority: CN
Inventors: 杨俊�; 吴志峰
Original assignee: Suzhou Haider New Material Technology Co ltd
Current assignee: Suzhou Haider New Material Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-09-06
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a bridge dynamometry support, it includes the upper base body, lower pedestal, the dynamometry part, the lower pedestal includes the bottom plate, form the annular slab on the bottom plate, the upper base body includes the panel, form in the panel bottom and can with the inner wall or the outer wall complex piston body of annular slab, bridge dynamometry support is still including being used for the connector link that is connected with the panel with the annular slab, the dynamometry part is spoke formula force cell sensor, and be located the cavity that piston body and annular slab formed, the terminal surface is contradicted respectively on piston body and bottom plate about the spoke formula force cell sensor. The utility model has the advantages that on one hand, the applicable temperature range is wide, the field calibration is not needed, and the practicability is strong through the spoke type force cell sensor which can directly read data; on the other hand, through structural design, the sensor is only acted by vertical pressure under the operating condition of the support, and cannot be acted by horizontal shearing force, rotation and bending moment, so that the measuring precision and the safe operation of the sensor are guaranteed.

Description

Bridge dynamometry support

Technical Field

The utility model belongs to the technical field of the bridge, concretely relates to bridge dynamometry support.

Background

In the bridge construction process, the accurate load of obtaining the bridge supporting position has extremely important meaning to the safe construction of the concrete continuous beam bridge jacking method. Through carrying out load survey to superstructure, can monitor the stress state of construction stage bridge structures, can in time adjust when the condition of unbalance loading or overload appears and rectify, guarantee construction safety and progress.

At present, a basin-type force measuring support is mainly used as a bridge force measuring support, lateral pressure of a rubber plate arranged in the support under different vertical pressures is measured, and then the pressure stress is converted into an electric signal by a pressure transmitter to be output. Such a force-measuring solution of the force-measuring mount causes problems in several respects;

(1) the same pressure-bearing rubber plate is pressed at different temperatures, and the lateral pressure stress of the same pressure-bearing rubber plate can be greatly different. The method is greatly influenced by temperature, and the measured force value is not always accurate.

(2) The method needs to carry out field calibration, and the difference between the laboratory environment and the project field environment is large, so that the error of the pot type force measuring support after the laboratory calibration is still large during field measurement.

(3) The support structure is complicated, and the cost is expensive. The force measuring support for monitoring the load during the construction of the concrete continuous beam bridge jacking method only needs to measure the vertical pressure without considering the functions of displacement, corner, horizontal shearing resistance, vertical tensile strength and the like of the support, is a temporary device and needs to be dismantled after the construction is completed. Therefore, the above-mentioned pot-type load cell is not economical for use in a load cell for load monitoring during the construction of a concrete continuous beam bridge by jacking.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art not enough, provide a force measurement support that modified simple structure, biography power are clear and definite, accurate dynamometry, cost saving type. Meanwhile, the method is particularly suitable for load monitoring during the pushing construction of the concrete continuous beam bridge.

For solving the technical problem, the utility model discloses take following technical scheme:

the bridge dynamometric support comprises an upper base body, a lower base body and a dynamometric part, wherein the dynamometric part is positioned between the upper base body and the lower base body, the lower base body comprises a bottom plate and an annular plate formed on the bottom plate, the upper base body comprises a panel and a piston body which is formed at the bottom of the panel and can be matched with the inner wall or the outer wall of the annular plate, the bridge dynamometric support further comprises a connecting buckle used for connecting the annular plate with the panel, the dynamometric part is a spoke type dynamometric sensor and is positioned in a cavity formed by the piston body and the annular plate, and the upper end surface and the lower end surface of the spoke type dynamometric sensor respectively abut against the piston body and the bottom plate.

Preferably, the annular plate comprises an annular plate body, an extension ear formed on the periphery of the annular plate body, and the connecting buckle is matched with the extension ear and connected to the bottom of the panel.

According to the utility model discloses a concrete implementation and preferred aspect, extend the ear and outwards extend and be the annular from annular plate body upper portion edge, the connector link is the annular knot, the lower part of annular knot with extend ear lock and laminate at the outer wall of annular plate, the upper portion that the annular was detained is connected with the panel. The purpose of the arrangement of the annular buckle (the anti-pulling ring) is to form a mutual buckling mode with the extending lug extending out of the upper side of the lower seat body, so as to resist the overturning moment generated in the pushing construction process of the bridge beam section.

Preferably, a plurality of countersunk holes distributed around the circumferential direction are formed in the panel, and the annular buckle is fixed on the bottom surface of the panel through countersunk bolts penetrating into the countersunk holes. The outer side of the upper surface of the upper seat body is provided with a counter bore type bolt through hole which is used for being connected with the tensile ring through a bolt.

Further, the panel and the piston body are integrally formed; the annular plate and the bottom plate are integrally formed. Therefore, the upper seat body and the lower seat body are convenient to form and process, and cast steel is adopted in the embodiment for production and processing.

According to another embodiment and preferred aspect of the present invention, the piston body includes a first extension extending downward from the middle of the panel, and a second extension extending downward from the bottom of the first extension, wherein the first extension and the second extension are concentric, and the outer diameter of the second extension is larger than the outer diameter of the first extension, and the piston body is attached to the outer wall of the second extension and the inner wall of the cavity. When the roof beam bridge construction is carried out to the top pushing method, the horizontal force transmitted to the support is transmitted to the lower seat body middle frame through the piston body and then transmitted to the lower structure. The force sensor arranged in the support cavity is only under the action of pressure, so that the force sensor is protected, and the measurement precision of the force sensor is guaranteed.

In this case, the bottom plane of the piston body is in vertical hard contact with the load cell, and the contact surfaces can be separated.

Meanwhile, the annular plate at the upper part of the lower seat body is used for resisting overturning moment generated in the pushing construction process. The lower surface of the lower base body is provided with a counter bore type bolt through hole for anchoring a force transducer inside the support, so that the force transducer is prevented from generating horizontal displacement or rotation inside the support in the bridge construction process.

Preferably, the spoke-type load cell is fixed to the base plate by a countersunk bolt.

Furthermore, one spoke type force measuring sensor is arranged, and the center of the spoke type force measuring sensor is aligned with the center of the cavity; or a plurality of spoke type force measuring sensors are uniformly distributed around the circumference of the cavity by taking the center of the cavity as a reference. That is to say, when vertical design load is great, can dispose 2, 3, 4 or even many more force cell sensors in support inside, even symmetrical arrangement lets each force cell sensor bear in coordination.

In addition, the bridge force measuring support also comprises a signal port and a data display instrument which are communicated with the spoke type force measuring sensor, wherein a wire hole is formed in the annular plate of the lower base body, the signal port is arranged in the wire hole, and meanwhile, a data transmission lead is adopted to communicate the signal port with the data display instrument.

Meanwhile, the vertical bearing capacity of the spoke type force measuring sensor is determined by construction design load, and the design load range of a single force measuring sensor is 500-10000 KN; the temperature range of the sensor is-30 to +70 ℃, and the comprehensive precision of the sensor is 0.5 percent FS; safety overload range 120% FS.

In this example, the lower side of the load cell is provided with a bolt hole for connecting with a lower seat body bolt, so that the load cell is prevented from generating horizontal displacement or rotation in the support during construction.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:

the utility model has the advantages that on one hand, the applicable temperature range is wide, the field calibration is not needed, and the practicability is strong through the spoke type force cell sensor which can directly read data; on the other hand, through the structural design, the sensor is only under the action of vertical pressure under the operating condition of the support and cannot be under the action of horizontal shearing force, rotation and bending moment, the measuring precision and the safe operation of the sensor are guaranteed, and meanwhile, the sensor is used as a force measuring support in the continuous beam bridge jacking method construction process, so that the purpose of measuring force is achieved, the construction safety is guaranteed, and the construction cost is saved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic front view of a bridge dynamometric support of the present invention;

FIG. 2 is a schematic top view of FIG. 1;

wherein: 1. an upper base body; 10. a panel; 10a, a counter bore; 11. a piston body; 111. a first extension body; 112. a second extension body; 2. a lower seat body; 20. a base plate; 21. an annular plate; 21a, a string hole; 210. an annular plate body; 211. an extension ear; 3. a force measuring component; 4. an annular buckle; 5. a countersunk bolt; 6. a countersunk head bolt; 7. a signal port; 8. and a data display instrument.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, the bridge dynamometric support of the present embodiment includes an upper seat body 1, a lower seat body 2, and a dynamometric component 3 located between the upper seat body 1 and the lower seat body 2.

Specifically, the lower housing 2 includes a bottom plate 20, and an annular plate 21 formed on the bottom plate 20.

The upper housing 1 includes a face plate 10, a piston body 11 formed at the bottom of the face plate 10 and capable of being engaged with the inner wall of the ring plate 21.

In this example, the bridge load cell is illustrated as having a circular cross-section.

Meanwhile, the upper seat body 1 and the lower seat body 2 are both produced and processed in a cast steel mode. The bridge load cell further comprises a connection clasp 4 for connecting the annular plate 21 with the face plate 10.

The ring plate 21 includes a ring plate body 210, an extension ear 211 formed at the outer circumference of the ring plate body 210, and the connector link 4 is engaged with the extension ear 211 and connected to the bottom of the panel 10.

The extension ear 211 extends outward from the upper edge of the annular plate body 210 and has an annular shape.

The connecting buckle 4 is an annular buckle, the lower part of the annular buckle is buckled with the extending lug 211 and is attached to the outer wall of the annular plate 21, and the upper part of the annular buckle is connected with the panel 10. The purpose of the arrangement of the annular buckle (anti-pulling ring) is to form a mutual buckling mode with the extending lug extending out of the upper side of the lower seat body so as to resist the overturning moment generated in the pushing construction process of the bridge beam section.

In this example, a plurality of countersunk holes 10a are provided in the face plate 10 so as to be distributed around the circumferential direction, and the ring button 4 is fixed to the bottom surface of the face plate 10 by means of countersunk bolts 5 inserted into the countersunk holes 10 a. The outer side of the upper surface of the upper seat body is provided with a counter bore type bolt through hole for carrying out bolt connection with the tensile ring.

The piston body 11 includes a first extension 111 extending downward from the middle of the panel, and a second extension 112 extending downward from the bottom of the first extension 111, wherein the first extension 111 and the second extension 112 are concentric, the outer diameter of the second extension 112 is larger than the outer diameter of the first extension 111, and the outer wall of the piston body 11 from the second extension 112 is attached to the inner wall of the cavity. When the roof beam bridge construction is carried out to the top pushing method, the horizontal force transmitted to the support is transmitted to the lower seat body middle frame through the piston body and then transmitted to the lower structure. The force sensor arranged in the support cavity is only under the action of pressure, so that the force sensor is protected, and the measurement precision of the force sensor is guaranteed.

In this example, the load cell 3 is a spoke-type load cell, and is located in a cavity formed by the piston body 11 and the annular plate 21, and the upper and lower end surfaces of the spoke-type load cell respectively abut against the piston body 11 and the bottom plate 20.

In particular, the bottom plane of the piston body 11 is in vertical hard contact with the force measuring part 3, and the contact surfaces can be separated.

Specifically, the bottom plate 20 is also provided with a counter bore type bolt through hole for anchoring the force measuring component 3 inside the support, so as to prevent the sensor from generating horizontal displacement or rotation inside the support in the bridge construction process.

In this example, the spoke load cell is secured to the base plate 20 by a countersunk head 6.

Specifically, the bolt hole is arranged on the lower side of the spoke type force measuring sensor and used for being connected with the lower seat body through a bolt, and horizontal displacement or rotation of the sensor in the support is prevented in the construction process.

One spoke type force measuring sensor is arranged, and the center of the spoke type force measuring sensor is aligned with the center of the cavity.

Of course, there may be a plurality of spoke-type load cells, and the spoke-type load cells are uniformly distributed around the circumference of the cavity with the center of the cavity as a reference. That is to say, when vertical design load is great, can dispose 2, 3, 4 or even many more force cell sensors in support inside, even symmetrical arrangement lets each force cell sensor bear in coordination.

Meanwhile, the vertical bearing capacity of the spoke type force measuring sensor is determined by construction design load, and the design load range of a single force measuring sensor is 500 KN-10000 KN; the temperature range of the sensor is-30 to +70 ℃, and the comprehensive precision of the sensor is 0.5 percent FS; safety overload range 120% FS.

In addition, the bridge dynamometric support also comprises a signal port 7 communicated with the spoke type dynamometric sensor and a data display instrument 8.

Specifically, a wire hole 21a is formed in the annular plate 21 of the lower seat body 2, the signal port 7 is installed in the wire hole 21a, and meanwhile, the signal port 7 is communicated with the data display instrument 8 by using a data transmission wire.

In this example, the data display 8 is used to visually feed back the measured load data. The data display instrument 8 can be designed into a battery power supply form by adopting a direct current power supply form, so that field operation is facilitated.

In summary, the present embodiment has the following advantages:

1. compared with the traditional basin-type force measuring support, the structure is simple and the force transmission is direct.

2. Through structural design, the sensor is only acted by vertical pressure under the support operation condition, and can not be acted by horizontal shear force, rotation and bending moment, so that the measurement accuracy and the safe operation of the sensor are guaranteed.

3. The temperature range is wide, the on-site calibration is not needed, and the accurate force measurement can be realized on the construction site after the calibration is finished when the sensor leaves the factory.

4. The manufacturing cost is relatively low, and the bearing is used as a force measuring support in the continuous beam bridge jacking construction process, so that the purpose of measuring force is achieved, the construction safety is guaranteed, and the construction cost is saved.

The present invention has been described in detail, but the present invention is not limited to the above-described embodiments. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A bridge dynamometry support comprises an upper base body, a lower base body and a dynamometry part positioned between the upper base body and the lower base body, and is characterized in that: the lower seat body comprises a bottom plate and an annular plate formed on the bottom plate, the upper seat body comprises a panel and a piston body formed at the bottom of the panel and capable of being matched with the inner wall or the outer wall of the annular plate, the bridge force measuring support further comprises a connecting buckle used for connecting the annular plate with the panel, the force measuring part is a spoke type force measuring sensor and is located in a cavity formed by the piston body and the annular plate, and the upper end face and the lower end face of the spoke type force measuring sensor are respectively abutted to the piston body and the bottom plate.

2. The bridge load cell of claim 1, wherein: the annular plate comprises an annular plate body and extension ears formed on the periphery of the annular plate body, and the connecting buckle is matched with the extension ears and connected to the bottom of the panel.

3. The bridge load cell of claim 2, wherein: extend the ear certainly annular plate body upper portion edge outwards extends and is the annular, the connector link detain for the annular, the annular detain the lower part with extend ear lock and laminating and be in the outer wall of annular plate, the upper portion that the annular was detained with the panel is connected.

4. A bridge load cell abutment according to claim 3, wherein: the panel is provided with a plurality of countersunk holes distributed around the circumferential direction, and the annular buckle is fixed on the bottom surface of the panel through countersunk bolts penetrating into the countersunk holes.

5. The bridge load cell mount of claim 1, wherein: the panel and the piston body are integrally formed; the annular plate and the bottom plate are integrally formed.

6. The bridge load cell of claim 1, wherein: the piston body comprises a first extension body and a second extension body, wherein the first extension body extends downwards from the middle of the panel, the second extension body continues to extend downwards from the bottom of the first extension body, the first extension body and the second extension body are concentric, the outer diameter of the second extension body is larger than that of the first extension body, and the outer wall of the piston body from the second extension body is relatively attached to the inner wall of the cavity.

7. The bridge load cell of claim 1, wherein: the spoke type force measuring sensor is fixed on the bottom plate through a countersunk head bolt.

8. The bridge load cell of claim 7, wherein: one spoke type force measuring sensor is arranged, and the center of the spoke type force measuring sensor is aligned with the center of the cavity; or the spoke type load cells are multiple and are uniformly distributed around the circumference of the cavity by taking the center of the cavity as a reference.

9. The bridge load cell of claim 1, wherein: the bridge force measuring support also comprises a data display instrument communicated with the spoke type force measuring sensor.

10. The bridge load cell of claim 9, wherein: the bridge force measurement support is characterized in that the annular plate is provided with a wire hole, the bridge force measurement support further comprises a signal port which is installed in the wire hole and communicated with the spoke type force measurement sensor, and the data display instrument is communicated with the data display instrument in a wired or wireless mode through the signal port.