CN203096618U - Intelligent prestress tensioning system - Google Patents
Intelligent prestress tensioning system Download PDFInfo
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- CN203096618U CN203096618U CN 201320070028 CN201320070028U CN203096618U CN 203096618 U CN203096618 U CN 203096618U CN 201320070028 CN201320070028 CN 201320070028 CN 201320070028 U CN201320070028 U CN 201320070028U CN 203096618 U CN203096618 U CN 203096618U
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- tensioning
- stretch
- draw
- jack
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Abstract
The utility model discloses an intelligent prestress tensioning system, and relates to the technical field of prestress beam tensioning equipment in engineering construction such as railways, highways and municipal administration bridges. The intelligent prestress tensioning system comprises an intelligent tensioning jack and tensioning pump stations, wherein the number of the tensioning pump stations is at least two, the tensioning pump stations are respectively connected with an oil inlet and an oil return port of the intelligent tensioning jack through high-pressure oil pipes, a data line of a control system of each tensioning pump station is connected with a displacement sensor of the intelligent tensioning jack, and an electromagnetic proportional valve is arranged on an oil way of a valve body of each tensioning pump station. Compared with the prior art, the pump stations are variable oil pumps, the variable of each oil pump is small flow when the pressure intensity is close to tensioning control pressure intensity, the precision when a preset tensioning pressure intensity value is reached is effectively guaranteed, the control precision of a tensioning control pressure intensity MPa value is smaller than or equal to 0.5%, the control precision of a tensioning extension value is smaller than or equal to 0.5%, the tensioning control pressure intensity MPa value and the tensioning extension value are both controlled by a computer automatically and accurately, a result is obtained by automatically calculating the tensioning extension value, and the error range is reduced to +/-1% from +/-15% of traditional tensioning.
Description
Technical field
The utility model relates to prestressed girder tensioning equipment technical field in the engineering constructions such as railway, highway, municipal bridge, particularly a kind of prestressing force intelligence tensioning system.
Background technology
In the prestress engineering construction, the anchoring of all presstressed reinforcing steels all needs tensioning equipment to give to answer muscle to apply prestressing force in advance, at present, the tradition tensioning equipment all is a plurality of handles of operating each control valve with manually mode, the stretch value of manual measurement presstressed reinforcing steel and read the pressure meter pressure values, and it is numerous and diverse to exist operational sequence, error in reading is big, measuring process is slow, and it is generally not enough to be subjected to human factor to influence the prestressed stretch-draw value, the misuse rate height occurs; Not according to actual stretch-draw outcome record, write down a series of problems such as untrue, these variety of problems will directly have influence on the stretch-draw quality, influence the application life and the safety assurance of construction works such as bridge.
The utility model content
The utility model provides a kind of prestressing force intelligence tensioning system, and it can solve, and existing tensioning equipment operational sequence is numerous and diverse, and error in reading is big, and measuring process is slow, the high problem of misuse rate occurs.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: comprise that the described stretch-draw pumping plant of intelligent stretch-draw jack and stretch-draw pumping plant has two at least, this stretch-draw pumping plant is connected with oil return opening with the oil-in of described intelligent stretch-draw jack respectively by high-pressure oil pipe, the data wire of the control system in the described stretch-draw pumping plant is electrically connected with the displacement transducer of described intelligent stretch-draw jack, on the oil circuit of the valve body in the described stretch-draw pumping plant electromagnetic proportional valve that is used for Flow-rate adjustment is installed.
In the technique scheme, scheme can also be more specifically: described intelligent stretch-draw jack includes the vertically-displacable jack, described displacement transducer is contained in the linear guide on the described vertically-displacable jack, one end of described displacement transducer pull bar is connected with whirligig, and described whirligig is installed on the jack piston end face.
Further: described linear guide is made of fairlead and support tube, described support tube is installed on the end face of described jack cylinder, described fairlead is slidably mounted in the described support tube along axis direction, and the protruded tube of this fairlead is fixed by nut and described whirligig; Described displacement transducer is contained in the described fairlead along axis direction, and described displacement transducer pull bar stretches in the protruded tube of described fairlead.
Further: described whirligig includes sliding sleeve, and this sliding sleeve its underpart is with slide bar, and this slide bar bottom is plugged in the T type slipping ring, and the bottom of this slipping ring is contained in the pit between slide plate and the fixed cover, on this pit two side steel ball is housed.
Further: described stretch-draw pumping plant includes cabinet, be provided with the pump housing, control valve group and control system case in this cabinet, described control valve is assembled on the support that described cabinet one side is provided with, this control valve group includes valve body, the unloader oil circuit of described valve body is provided with the electromagnetic switch ball valve, the reversing oil circuit of described valve body is provided with the solenoid operated directional valve that changes the oil circuit direction, on the oil circuit that the oil outlet of described valve body and fuel feed hole communicate pressure sensor is housed; Described control system case is located at a side of described control valve group, and described pressure sensor is connected with the input of described control system case.Further: one of them pumping plant of described stretch-draw pumping plant is provided with display screen, and this display screen is the man-machine interface touch-screen.
Because adopt technique scheme, the utility model compared with prior art has following beneficial effect:
1, owing on the oil circuit of the valve body in the stretch-draw pumping plant electromagnetic proportional valve that is used for Flow-rate adjustment is installed, pumping plant is a variable capacity oil pump, near stretch-draw control pressure variations per hour is low discharge, effectively guarantee to reach the precision when presetting the stretch-draw pressure values, stretch-draw control pressure MPa Numerical Control precision≤0.5%, elongation value of stretching control accuracy≤0.5%, stretch-draw control pressure MPa numerical value, the whole automatic electronic computers of elongation value of stretching are precisely controlled, elongation value of stretching calculates the result automatically, and with error range by traditional stretch-draw ± 15% narrow down to ± 1%.
2, employing power with draw two control simultaneous techniques of moving, two or many jack of computer control simultaneously, synchronous symmetrical stretch-draw, realize " many tops synchronous tension " technology, i.e. oil pump operating personnel operation is worked simultaneously with many table oils of monitoring pump, management, owner can get final product the remote monitoring overall process by computer network in office, realize that many stretch-draw of host computer control pumping plant and stretch-draw jack carry out stretching construction simultaneously.
3, realize the stressing sequence Based Intelligent Control, be not subjected to artificial, such environmental effects; Pause point, loading speed, hold stretching process key elements such as lotus time and meet bridge design and construction technique normalizing requirement fully.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model intelligence stretch-draw jack.
Fig. 3 is the structural representation of the utility model stretch-draw pumping plant.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is a hydraulic schematic diagram.
Fig. 6 is the structural representation of this valve body.
The specific embodiment
Below in conjunction with the accompanying drawing example, the utility model is described in further detail:
The utility model as shown in Figure 1, it comprises that intelligent stretch-draw jack 1 and an opinion draw pumping plant 2 and secondary stretch-draw pumping plant 3, advocate to draw pumping plant to be provided with display screen, this display screen is a man-machine interface touch-screen 27, advocates to draw pumping plant 2 to be connected with oil-in 7 with the oil return opening 6 of intelligent stretch-draw jack 1 respectively with 5 by high-pressure oil pipe 4 respectively with secondary stretch-draw pumping plant 3; Advocate to draw the data wire 9 of the control system in pumping plant 2 and the secondary stretch-draw pumping plant 3 to be electrically connected with the displacement transducer 8 of intelligent stretch-draw jack 1.
As shown in Figure 2, intelligent stretch-draw jack 1 includes the vertically-displacable jack, and displacement transducer 8 is contained in the linear guide on the vertically-displacable jack, and the end of displacement transducer pull bar 8-1 is connected with whirligig; Linear guide is made of fairlead 13 and support tube 12, and support tube 12 is installed on the end face of jack cylinder 14, and fairlead 13 is slidably mounted in the support tube 12 along axis direction, and the 13-1 pipe that stretches out of this fairlead is fixed by nut 15 and whirligig; Displacement transducer 8 is contained in the fairlead 13 along axis direction, and displacement transducer pull bar 8-1 stretches in the protruded tube 13-1 of fairlead 13; Whirligig includes sliding sleeve 17, this sliding sleeve its underpart is with slide bar 17, this slide bar bottom is plugged in the T type slipping ring 18, the bottom of this slipping ring is contained in the pit between slide plate 21 and the fixed cover 19, on this pit two side steel ball 20 is housed, fixed cover 19 is installed on the piston end surface, the shoulder of T type slipping ring 18 descends and O shape circle 22 is housed, when piston is flexible, pull bar and fairlead that whirligig drives displacement transducer move with piston, and when piston rotated, slipping ring rotated in whirligig under the effect of fairlead, make the displacement transducer pull bar constant, guaranteed the certainty of measurement of sensor measurement piston axial displacement in the jack radial displacement.
As Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the stretch-draw pumping plant includes cabinet 23, be provided with the pump housing 24, control valve group, control system case 25, motor 32 in this cabinet, control valve is assembled on the support 26 that cabinet 23 1 sides are provided with, this control valve group includes valve body 10, the electromagnetic proportional valve 11 that is used for Flow-rate adjustment is installed on the oil circuit of valve body 10, and electromagnetic proportional valve 11 is controlled instantaneous oil mass, reaches the purpose of indirect application valve body oil mass; Unloader 38 oil circuits of valve body 10 are provided with electromagnetic switch ball valve 28, the reversing oil circuit of valve body is provided with solenoid operated directional valve 33, be provided with safety valve 34, one way valve 35 in the valve body 10, on the oil circuit that the oil outlet 30 of valve body 10 and spill port 31 communicate pressure sensor 29 be housed; Control system case 25 is located at a side of control valve group, and pressure sensor 29 is connected with the input of control system case 25; Advocate to draw on the cabinet 23 of the cabinet 23 of pumping plant 2 and secondary stretch-draw pumping plant 3 to be equipped with operation control panel 37 and antenna 36, advocate to draw pumping plant 2 and secondary stretch-draw pumping plant 3 to communicate to connect transmission, reception data by the wireless transmission of antenna;
Advocate to draw the man-machine interface touch-screen of pumping plant, display screen is provided with data com, USB, Ethernet interface, built-in SD storage, the input of support Chinese interface, stretch-draw control software is installed in the display screen, displacement data and pressure data show on software interface after treatment, realize supervision and control to stretch-draw.After a stretching process is finished, stretch-draw control software meeting storing data automatically, and packing data, be sent to remote server by wireless mode, promptly can be anywhere when inserting the internet, administrative staff can check the stretch-draw data, thereby guarantee the authenticity of stretch-draw data.When the needs field print, can directly print directly into printer, or it is for future reference to deposit packing data in USB flash disk.
Stretch-draw control running software step:
(1) bridge, facility information are imported by the touch display screen prompting in the energising back;
(2), calibrate as sensor, pressure meter to equipment;
(3) enter another interface, set the stretch-draw parameter, comprise safe stretch-draw oil pressure, safe backhaul oil pressure, operating oil pressure, dwell time etc., safety and running parameter that input stretch-draw needs.
(4) open bit motion by automatic stretch-draw knob by stretch-draw control software startup.
(5) if equipment is working properly, system can control stretching process and automatically finish, and generates form.
(6) if control command and detect data exception, software can alarm, gets rid of etc. fault.
Table 1 is that this intelligent tensioning system and traditional tensioning equipment technology compare:
Table 1:
Claims (6)
1. prestressing force intelligence tensioning system, comprise intelligent stretch-draw jack and stretch-draw pumping plant, it is characterized in that: described stretch-draw pumping plant has two at least, this stretch-draw pumping plant is connected with oil return opening with the oil-in of described intelligent stretch-draw jack respectively by high-pressure oil pipe, the data wire of the control system in the described stretch-draw pumping plant is electrically connected with the displacement transducer of described intelligent stretch-draw jack, on the oil circuit of the valve body in the described stretch-draw pumping plant electromagnetic proportional valve that is used for Flow-rate adjustment is installed.
2. prestressing force intelligence tensioning system according to claim 1, it is characterized in that: described intelligent stretch-draw jack includes the vertically-displacable jack, described displacement transducer is contained in the linear guide on the described vertically-displacable jack, one end of described displacement transducer pull bar is connected with whirligig, and described whirligig is installed on the jack piston end face.
3. prestressing force intelligence tensioning system according to claim 2, it is characterized in that: described linear guide is made of fairlead and support tube, described support tube is installed on the end face of described jack cylinder, described fairlead is slidably mounted in the described support tube along axis direction, and the protruded tube of this fairlead is fixed by nut and described whirligig; Described displacement transducer is contained in the described fairlead along axis direction, and described displacement transducer pull bar stretches in the protruded tube of described fairlead.
4. according to claim 2 or 3 described prestressing force intelligence tensioning systems, it is characterized in that: described whirligig includes sliding sleeve, this sliding sleeve its underpart is with slide bar, this slide bar bottom is plugged in the T type slipping ring, the bottom of this slipping ring is contained in the pit between slide plate and the fixed cover, on this pit two side steel ball is housed.
5. prestressing force intelligence tensioning system according to claim 1 and 2, it is characterized in that: described stretch-draw pumping plant includes cabinet, be provided with the pump housing, control valve group and control system case in this cabinet, described control valve is assembled on the support that described cabinet one side is provided with, this control valve group includes valve body, the unloader oil circuit of described valve body is provided with the electromagnetic switch ball valve, the reversing oil circuit of described valve body is provided with the solenoid operated directional valve that changes the oil circuit direction, on the oil circuit that the oil outlet of described valve body and fuel feed hole communicate pressure sensor is housed; Described control system case is located at a side of described control valve group, and described pressure sensor is connected with the input of described control system case.
6. prestressing force intelligence tensioning system according to claim 1, it is characterized in that: one of them pumping plant of described stretch-draw pumping plant is provided with display screen, and this display screen is the man-machine interface touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070028 CN203096618U (en) | 2013-02-07 | 2013-02-07 | Intelligent prestress tensioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320070028 CN203096618U (en) | 2013-02-07 | 2013-02-07 | Intelligent prestress tensioning system |
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| Publication Number | Publication Date |
|---|---|
| CN203096618U true CN203096618U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320070028 Expired - Fee Related CN203096618U (en) | 2013-02-07 | 2013-02-07 | Intelligent prestress tensioning system |
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| CN (1) | CN203096618U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN103711318A (en) * | 2013-12-17 | 2014-04-09 | 柳州黔桥工程材料有限公司 | Smart tensioning device calibrating method |
-
2013
- 2013-02-07 CN CN 201320070028 patent/CN203096618U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103526948A (en) * | 2013-10-24 | 2014-01-22 | 柳州黔桥工程材料有限公司 | Control method of intelligent tension system and intelligent tension system |
| CN103526948B (en) * | 2013-10-24 | 2015-12-02 | 柳州黔桥工程材料有限公司 | The control method of intelligent tensioning system and intelligent tensioning system |
| CN103711318A (en) * | 2013-12-17 | 2014-04-09 | 柳州黔桥工程材料有限公司 | Smart tensioning device calibrating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20210207 |