CN202511931U

CN202511931U - Pre-stressed component tension measurement device

Info

Publication number: CN202511931U
Application number: CN2012200765936U
Authority: CN
Inventors: 侯文瑞
Original assignee: NINGXIA LIYUAN COMPUTER TECHNOLOGY Co Ltd
Current assignee: NINGXIA LIYUAN COMPUTER TECHNOLOGY Co Ltd
Priority date: 2012-03-02
Filing date: 2012-03-02
Publication date: 2012-10-31
Anticipated expiration: 2022-03-02

Abstract

A pre-stressed component tension measurement device comprises an outer casing and an inner casing, wherein a plurality of pre-stressed tendons axially penetrate the inner casing, a first end of the inner casing is combined with an anchor plate, the pre-stressed tendons are fixedly connected with the anchor plate through a clamping piece, a side surface and an end surface of the anchor plate are provided with pressure sensors, an end surface of the inner casing is provided with a pressure sensor, and the pre-stressed tendons are provided with a radio frequency identification (RFID) label. A sensor unit is fixedly connected with an outer casing of a lifting jack and comprises an outer shell, and a singlechip, a displacement sensor, an angle sensor, a display module, a battery module, and a wireless communication module are arranged inside the outer shell, wherein the displacement sensor, the angle sensor, the display module, the battery module and the wireless communication module are in electrical connection with the singlechip. A dragging part is fixedly connected with an inner casing of the lifting jack, an ejector pin is arranged on the dragging part and is connected with the displacement sensor and the angle sensor through a pulling rope, and the pulling rope is in axial parallel with the inner casing of the lifting jack.

Description

The stretching prestressed component measurement mechanism

Technical field

The utility model relates to a kind of prestress measurement mechanism, and particularly a kind of stretching prestressed component measurement mechanism that is applicable to the civil engineering work prestressed component belongs to technical field of automation.

Background technology

Prestressed concrete member is the primary structure form of present road and bridge construction.Present stage, prestressing force method construction method basically all is to adopt manually operated mode at home.The site operation personnel is in stretching process; Usually the stretching force and the stretching extension amount of three nodes of record stretch-draw initial stress point 1 (be generally 10～15% design stretching force), stretch-draw initial stress point 2 (being generally the some twice of 1 initial stress), complete stretch-draw point; If the stretching extension amount does not exceed the allowable value of pre-stress rib stretching force theoretical elongation, think that then stretch-draw is normal.The metering system of current stretching extension amount is most through instruments such as steel rulers, though this mode simple, intuitive be prone to the doping human factor, and this mode has hindered the informationization of stretching process.In the prior art, the patent No. is ZL03111812.7, and patent name is the utility model patent of " full-automatic pre-stress stretching device ", proposes to adopt the control assembly of lifting jack, oil pump power, sensor element, displacement transducer and tensioning equipment; The sensor that this utility model adopts all adopts electrical connection, and has increased force transducer and detect the control as stretching force, and this mode is not too suitable at precast beam or crane span structure scene at present, and beam spare peripheral element and tensioning equipment mobile is easy to destroy connecting line; The lifting jack pump housing is often carried, is collided with, and can't guarantee that fixed displacement transducer is not destroyed.The patent No. is ZL01129163.X; Patent name is the utility model patent of " integrated autocontrol tester for prestressed stretch-draw anchor "; The transmission of displacement transducer signal electric weight has been proposed; In structural drawing, provided displacement transducer in the form of piston, be installed in the lifting jack outer wall through affixed mode; Such affixed mode is damaged displacement transducer because of colliding with easily, causes the actual effect of subsequent control; Adopt the piston type displacement transducer in addition, can't reduce the volume of displacement transducer.

The utility model content

The purpose of the utility model is to provide a kind of novel pre-stressed member stretch-draw measurement mechanism, can accurately measure the stretching extension amount of civil engineering work prestressed component.

For solving the problems of the technologies described above; The utility model discloses a kind of stretching prestressed component measurement mechanism; Comprise: a lifting jack, said lifting jack comprise an outer shell and an inner casing, and a plurality of presstressed reinforcing steels run through said inner casing vertically; First end of the inner casing of said lifting jack is combined with an anchor slab; Said presstressed reinforcing steel is fixed on the said anchor slab through intermediate plate, and the side of said anchor slab is provided with one first pressure transducer and one second pressure transducer, and the fit end face of said inner casing first end of said anchor slab is provided with one the 3rd pressure transducer and one the 4th pressure transducer; The end face of second end of said inner casing is provided with one the 5th pressure transducer and one the 6th pressure transducer, and said presstressed reinforcing steel is provided with a RFID tag; One sensor unit is fixed on the outer shell of said lifting jack, and said sensor unit comprises a shell; The displacement transducer that in said shell, is provided with a single-chip microcomputer and is electrically connected on said single-chip microcomputer; Angular transducer, display module, battery module and wireless communication module; One traction element is fixed on the inner casing of said lifting jack, and said traction element is provided with a thimble, and said thimble connects said displacement transducer and angular transducer through a stay cord, and the inner casing of said stay cord and said lifting jack keeps axially parallel.

The utility model is reasonable in design, and is simple in structure, easy to loading and unloading, and can make the sensor volume less through rational sensor type selecting, is applicable to the accurate measurement of civil engineering work stretching prestressed component elongation.

The further improvement of the utility model is that said sensor unit is adsorbed in the outer shell of said lifting jack through a magnetic force gauge stand; Said traction element is adsorbed in the inner casing of said lifting jack through a magnetic force gauge stand.Sensor unit and traction element are adsorbed on the lifting jack through the magnetic force table, can make sensor unit and traction element dismounting more convenient, and sensor unit and traction element are applicable on the lifting jack of multiple pattern.

Description of drawings

Fig. 1 is that the wireless Prestressed Stretching Elongation measurement mechanism of the utility model uses arrangenent diagram;

Fig. 2 is the structure diagram of traction element;

Fig. 3 is the vertical view of sensor unit;

Fig. 4 is the structural representation of A-A section among Fig. 3;

Fig. 5 is the sensor unit control module figure of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further description.

Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4; This stretching prestressed component measurement mechanism comprises lifting jack outer shell 1, lifting jack inner casing 2, anchor slab 3, intermediate plate 4 and presstressed reinforcing steel 5; Sensor element 6, single-chip microcomputer 7, draw-wire displacement sensor 8, angular transducer 9, lithium battery 10, Liquid Crystal Module 11, sensor element magnetic force gauge stand 12, sensor draw ring 13, sensor stay cord 14, traction element 15, traction element thimble 16, traction element magnetic force gauge stand 17, first pressure transducer 18, second pressure transducer 19, the 3rd pressure transducer 20, the 4th pressure transducer 21, the 5th pressure transducer 22, the 6th pressure transducer 23 and RFID tag 24; Liquid Crystal Module 11 and sensor element magnetic force gauge stand 12 are installed in the surface of sensor element 6; Traction element magnetic force gauge stand 17 is installed in the surface of traction element 15; Traction element 15 is connected with traction element thimble 16; Single-chip microcomputer 7, draw-wire displacement sensor 8, angular transducer 9 and lithium battery 10 are installed in the inside of sensor element 6; First pressure transducer 18 and second pressure transducer 19 are installed in the side of anchor slab 3; The 3rd pressure transducer 20 and the 4th pressure transducer 21 are installed in the end face of anchor slab 3; The 5th pressure transducer 22 and the 6th pressure transducer 23 are installed in the end face of lifting jack inner casing 2; RFID tag 24 is installed on the presstressed reinforcing steel 5, and the output pressure signal of first pressure transducer 18, second pressure transducer 19, the 3rd pressure transducer 20, the 4th pressure transducer 21, the 5th pressure transducer 22 and the 6th pressure transducer 23 all is connected with upper control machine.Output pressure signal through first pressure transducer 18, second pressure transducer 19, the 3rd pressure transducer 20 and the 4th pressure transducer 21; Can develop effective prestress under frictional resistance test function and the anchor and equal measuring abilities of degree, and the stretching extension amount is accurately controlled; Through the output pressure signal of the 5th pressure transducer 22 and the 6th pressure transducer 23, can accurately control the hydraulic pressure in the lifting jack cavity; Through upper control machine RFID tag 24 is discerned, can be positioned presstressed reinforcing steel 5.Because lifting jack is a hydraulic mechanism, along with the axial translation of lifting jack inner casing 2, lifting jack inner casing 2 self has certain rotation; Therefore angular transducer 9 has been installed specially in sensor element 6, has been used for measuring the anglec of rotation of lifting jack inner casing 2 in stretching process.In the Unit Installation process, at first make presstressed reinforcing steel 5 pass lifting jack inner casing 2, be fixed on presstressed reinforcing steel 5 on the instrument anchor slab 3 through instrument intermediate plate 4; Then be adsorbed on sensor element 6 on the lifting jack outer shell 1, be adsorbed on traction element 15 on the lifting jack inner casing 2 through traction element magnetic force gauge stand 17 through sensor element magnetic force gauge stand 12; Be enclosed within sensor draw ring 13 on the traction element thimble 16 at last, and make the stretching axially parallel of sensor stay cord 14 and lifting jack inner casing 2.

Cooperate shown in Figure 5, after this device installs, opening power, single-chip microcomputer 7 is accomplished communication and is connected promptly through the upper control machine around the wireless module search, and sends " sensor is ready " status word.In stretching process; Along with moving of lifting jack inner casing 2 and anchor slab 3; Traction element thimble 16 drives stay cord 14 and then triggers displacement sensor 8 and angular transducer 9; Displacement transducer 8 will feed back to sensor master control borad 7 with the displacement information of stay cord 14 and the rotation angle information of lifting jack inner casing 2 through the mode of pulse or aanalogvoltage with angular transducer 9; Then single-chip microcomputer sensor master control borad 7 obtains the initial value of presstressed reinforcing steel 5 stretching extension amounts according to the displacement information of stay cord 14, and according to the rotation angle information of lifting jack inner casing 2 initial value is revised, and obtains the exact value of presstressed reinforcing steel 5 stretching extension amounts; Last sensor master control borad 7 passes through the exact value digitizing of the mode of counting or A/D conversion with presstressed reinforcing steel 5 stretching extension amounts, and is sent to upper control machine through wireless module.

Wireless Prestressed Stretching Elongation measurement mechanism provides zero clearing simultaneously, owes electric prompt facility, and the single charge stream time surpasses 100 hours at present, has characteristics easy to use.

Present embodiment provided detailed embodiment and concrete operating process, but the protection domain of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.

Claims

1. stretching prestressed component measurement mechanism is characterized in that comprising:

One lifting jack; Said lifting jack comprises an outer shell and an inner casing; A plurality of presstressed reinforcing steels run through said inner casing vertically, and first end of the inner casing of said lifting jack is combined with an anchor slab, and said presstressed reinforcing steel is fixed on the said anchor slab through intermediate plate; The side of said anchor slab is provided with one first pressure transducer and one second pressure transducer; The fit end face of said inner casing first end of said anchor slab is provided with one the 3rd pressure transducer and one the 4th pressure transducer, and the end face of second end of said inner casing is provided with one the 5th pressure transducer and one the 6th pressure transducer, and said presstressed reinforcing steel is provided with a RFID tag;

One sensor unit is fixed on the outer shell of said lifting jack, and said sensor unit comprises a shell; The displacement transducer that in said shell, is provided with a single-chip microcomputer and is electrically connected on said single-chip microcomputer; Angular transducer, display module, battery module and wireless communication module;

One traction element is fixed on the inner casing of said lifting jack, and said traction element is provided with a thimble, and said thimble connects said displacement transducer and angular transducer through a stay cord, and the inner casing of said stay cord and said lifting jack keeps axially parallel.

2. device as claimed in claim 1 is characterized in that said sensor unit is adsorbed in the outer shell of said lifting jack through a magnetic force gauge stand.

3. device as claimed in claim 1 is characterized in that said traction element is adsorbed in the inner casing of said lifting jack through a magnetic force gauge stand.