CN104452677A - Miter gate back drag rod prestress adjusting method and device - Google Patents
Miter gate back drag rod prestress adjusting method and device Download PDFInfo
- Publication number
- CN104452677A CN104452677A CN201410644107.XA CN201410644107A CN104452677A CN 104452677 A CN104452677 A CN 104452677A CN 201410644107 A CN201410644107 A CN 201410644107A CN 104452677 A CN104452677 A CN 104452677A
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- China
- Prior art keywords
- prestress
- stress
- augmentor
- back drag
- rod
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02C—SHIP-LIFTING DEVICES OR MECHANISMS
- E02C1/00—Locks or dry-docks; Shaft locks, i.e. locks of which one front side is formed by a solid wall with an opening in the lower part through which the ships pass
Abstract
Provided is a miter gate back drag rod prestress adjusting method and device. The device comprises a jacking cross beam, wherein a screw at the end of a back drag rod is sleeved with the jacking cross beam, a tool nut is arranged on the screw, a back drag rod nut is arranged at the screw section between the jacking cross beam and a back drag rod support, a stress application device is further arranged between the jacking cross beam and the back drag rod support and is composed of two jacks, and the jacks are respectively connected with a hydraulic pump source. The adjusting method comprises the steps of adding the stress application device, measuring pull force and stress of the back drag rod, adjusting prestress and the like. By means of the miter gate back drag rod prestress adjusting method and device, the defect that the back drag rod is completely loosened to determine a zero value, then the prestress of the back drag rod is adjusted to be a required value and accordingly a construction period is long when miter gate back drag rod prestress adjustment is performed in the prior art is overcome, the prestress of the back drag rod is not required to be loosened to be the zero value during measurement, adjustment is directly performed based on original prestress, and the construction period is shortened and operation is simplified while the adjusting effect is ensured.
Description
Technical field
The invention belongs to and relate to ship lock miter gate back rod adjustment technology field, specifically a kind of miter gate prestress of back drag rods method of adjustment and device.
Background technology
Miter gate is that more a kind of Service gate applied by ship lock, and be generally provided with prestressed back pull bar at its back side to increase the torsional rigidity of door body, prestressed size should in the scope of design code.The augmentor of current known miter gate back rod adjustment, mainly apply mode based on manpower, in afterburner process, the stress monitoring of back rod need use independent stress monitoring system, and miter gate back rod adjusts complex procedures, labour intensity is large, the construction period is longer.
Summary of the invention
For solving the problems such as miter gate prestress of back drag rods adjusts complex procedures, labour intensity is large, the construction period is long existed in known technology, the invention provides a kind of method and adjusting device without the need to lax back rod determination null value directly at the enterprising Row sum-equal matrix in original prestressing force basis.
The object of the present invention is achieved like this: a kind of miter gate prestress of back drag rods method of adjustment, comprises the following steps:
1) augmentor is installed additional: the augmentor arranging a cuff dynamometry on the back rod that will adjust;
2) back rod pulling force and stress determination: utilize the augmentor of step 1) to measure suffered pulling force and the stress of the miter gate prestressed back pull bar of back rod, need not by prestress of back drag rods pine to null value during mensuration, but adopt the augmentor with dynamometry to load back rod, detect pulling force and stress suffered by back rod by being with the augmentor of dynamometry; After back rod locking nut and back rod bearing have gap, the stress of augmentor display is prestress of back drag rods;
3) prestressing force adjustment: the adjusting process of finely tuning again after adopting twice circulation stress-application, first time, circulation stress-application was to 50%, and second time circulation stress-application, to 80%, is finally fine-tuning to the stress value of designing requirement;
When carrying out prestressing force adjustment, the process sequence of circulation stress-application is first up and then down, group order secondary after the former head adjusts back rod by root, according to the rule that increase mobile jib stress can make corresponding secondary stress in the bar increase, every circulation stress-application construction is first afterburning to mobile jib, then adjusts it according to secondary stress in the bar situation.
After twice circulation stress-application completes, according to the requirement of door body miter post side direction straightness accuracy, the sag of cross member in miter post one end, each prestress of back drag rods value etc., each prestress of back drag rods is finely tuned.
A kind of miter gate prestress of back drag rods adjustment augmentor, augmentor comprises a jacking cross beam, jacking cross beam is sleeved on the screw rod of back rod termination, screw rod is provided with frock nut, spiro rod section between lifting beam and back rod bearing is provided with back rod nut, between lifting beam and back rod bearing, be also provided with augmentor, described augmentor is made up of two jack, and jack is connected with hydraulic pump source respectively.
In said apparatus, described jack is slim jack.
In said apparatus, described hydraulic pump source comprises variable-frequency motor, and variable-frequency motor is connected with output mouth oil pump, and two delivery outlets of output mouth oil pump are connected with two jack respectively by flexible pipe; Hydraulic pump source also comprises a control cabinet, programmable logic controller is provided with in control cabinet, programmable logic controller is connected by holding wire with operation touch-screen and frequency converter, and Frequency Converter Control variable-frequency motor works, and the signal acquisition module of programmable logic controller is connected with pressure sensor.
Miter gate prestress of back drag rods method of adjustment provided by the invention and device, have following beneficial effect:
1, instant invention overcomes in prior art when adjusting miter gate prestress of back drag rods be first by completely lax for back rod with after determining null value, again its prestressing force is transferred to required value, cause the defect that the construction period is longer, need not by prestress of back drag rods pine to null value during mensuration, directly at the enterprising Row sum-equal matrix in original prestressing force basis, while guarantee Adjustment effect, shorten the duration, simplify operation.
2, hydraulic pump source is fuel-displaced by output mouth oil pump, connects respectively with two jack, can realize 2 synchronous, steady, balance reinforcings.
3, hydraulic pump adopts variable-frequency motor to drive, and loading velocity can flexible modulation.
4, adopt Controlled by Programmable Controller, automatic driving-force adding can be realized to the force that adds of two jack.
5, data acquisition and display comprehensively complete, comprise jack pressure, back rod pulling force, back rod stress etc.
6, make system have the multiple protection functions such as overload, superpressure by programmable logic controller, safety is high.
7, the man-machine interaction mode of touch-screen and graphical interfaces is adopted, easy to operate, friendly interface.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the layout of equipment of the present invention.
Fig. 2 is electric control system controls block diagram of the present invention.
Fig. 3 is the hydraulic pump source layout of equipment of the present invention.
Fig. 4 is the miter gate back rod arrangement diagram of the embodiment of the present invention.
Detailed description of the invention
Structure of the present invention is as shown in Figure 1,3: a kind of miter gate prestressed back pull bar adjusting device, adjusting device comprises a jacking cross beam 2, jacking cross beam 2 is sleeved on the screw rod 7 of back rod 6 termination, screw rod 7 is provided with frock nut 1, screw rod between lifting beam 2 and back rod bearing 57 sections is provided with back rod nut 3, between lifting beam 2 and back rod bearing 5, be also provided with augmentor, described augmentor is made up of two jack 4, and jack 4 is connected with hydraulic pump source respectively.
Jack 4 used in the present invention is slim jack.
Hydraulic pump source of the present invention comprises variable-frequency motor 9, and variable-frequency motor 9 is connected with output mouth oil pump 8, and two delivery outlets of output mouth oil pump 8 are connected with two jack 4 respectively by flexible pipe 10; Hydraulic pump source also comprises a control cabinet 11, programmable logic controller 12 is provided with in control cabinet 11, programmable logic controller 12 is connected by holding wire with operation touch-screen 13 and frequency converter 14, frequency converter 14 controls variable-frequency motor 9 and works, and the signal acquisition module of programmable logic controller 12 is connected with pressure sensor.
The course of work of augmentor of the present invention is as follows: two 75t Thin type hydraulic jack 4 of augmentor are put between jacking cross beam and 2 back rod bearings 5, screw frock nut 1 and compress jacking cross beam, starting augmentor synchronously drives two Thin type hydraulic jack afterburning to back rod, augmentor detects and the pulling force of display applying in real time and stress automatically, when prestress of back drag rods value reaches adjusting process required value, stop jacking, fastening back rod nut 3, then ultra-thin hydraulic jack return, this prestress of back drag rods adjustment construction completes.
Electric control system of the present invention is as shown in Figure 2: send instruction by touch-screen 13 initialization system operational factor, programmable logic controller 12 receives and sends corresponding control signal after processing to hydraulic pump source, pressurization and the pressure release of slim jack 4 is controlled by electromagnetic valve 15, programmable logic controller 12 adds the pressure signal in force from pressure sensor 16 Real-time Collection two by its signal acquisition module, and in real time computing show the stressed and stress value of back rod 6, when the prestressing force suffered by back rod 4 is to setting value, system stops automatically.
Adjustment process of the present invention is as follows: with Three Gorges Ship Lock miter gate prestress of back drag rods adjustment example: as shown in Figure 4:
Three Gorges Ship Lock is often fanned miter gate and is arranged 14 back rods, wherein goes up main back rod a, each 4 of lower main back rod b, upper secondary back rod c, each 3 of lower secondary back rod d.
The scope of Three Gorges Ship Lock miter gate prestress of back drag rods design code is:
(1) main prestress of back drag rods value is 60 ~ 120MPa, and secondary prestress of back drag rods value is 50 ~ 120MPa.
(2) with organizing interior every root prestress of back drag rods difference within 3 ~ 5%.
This method is implemented as follows in the adjustment of Three Gorges Ship Lock miter gate prestress of back drag rods:
1, every circulation stress-application is according to first up and then down, and group order secondary after the former head is carried out, and first carries out reinforcing to upper main back rod a, then carries out reinforcing to upper secondary back rod c, then carry out reinforcing to lower main back rod b, finally carry out reinforcing to lower secondary back rod d.
2, on the back rod that will adjust, arrange the miter gate prestressed back pull bar adjusting device of the augmentor of a cuff dynamometry.
3, start augmentor afterburning to back rod, the augmentor of band dynamometry is by showing the stress of augmentor applying in real time, and after back rod locking nut and back rod bearing have gap, the stress of augmentor display is prestress of back drag rods.
4, by adjusting process requirement, carry out twice circulation adjustment to back rod stress, first time, circulation stress-application was to 50%, and second time circulation stress-application is to 80%.
5, after twice circulation stress-application completes, according to the requirement of door body miter post side direction straightness accuracy, the sag of cross member in miter post one end, each prestress of back drag rods value etc., each prestress of back drag rods is finely tuned.
Claims (5)
1. a miter gate prestress of back drag rods method of adjustment, is characterized in that: comprise the following steps:
1) augmentor is installed additional: the augmentor arranging a cuff dynamometry on the back rod that will adjust;
2) back rod pulling force and stress determination: utilize the augmentor of step 1) to measure suffered pulling force and the stress of the miter gate prestressed back pull bar of back rod, need not by prestress of back drag rods pine to null value during mensuration, but adopt the augmentor with dynamometry to load back rod, detect pulling force and stress suffered by back rod by being with the augmentor of dynamometry; After back rod locking nut and back rod bearing have gap, the stress of augmentor display is prestress of back drag rods;
3) prestressing force adjustment: the adjusting process of finely tuning again after adopting twice circulation stress-application, first time, circulation stress-application was to 50%, and second time circulation stress-application, to 80%, is finally fine-tuning to the stress value of designing requirement;
Miter gate prestress of back drag rods method of adjustment according to claim 1, it is characterized in that: when carrying out prestressing force adjustment, the process sequence of circulation stress-application is first up and then down, group order secondary after the former head adjusts back rod by root, according to the rule that increase mobile jib stress can make corresponding secondary stress in the bar increase, every circulation stress-application construction is first afterburning to mobile jib, then adjusts it according to secondary stress in the bar situation.
2. miter gate prestress of back drag rods method of adjustment according to claim 1, it is characterized in that: after twice circulation stress-application completes, according to the requirement of door body miter post side direction straightness accuracy, the sag of cross member in miter post one end, each prestress of back drag rods value etc., each prestress of back drag rods is finely tuned.
3. a miter gate prestress of back drag rods adjustment augmentor, it is characterized in that: augmentor comprises a jacking cross beam (2), jacking cross beam (2) is sleeved on the screw rod (7) of back rod (6) termination, screw rod (7) is provided with frock nut (1), screw rod (7) section between lifting beam (2) and back rod bearing (5) is provided with back rod nut (3), also augmentor is provided with between lifting beam (2) and back rod bearing (5), described augmentor is made up of two jack (4), jack (4) is connected with hydraulic pump source respectively.
4. device according to claim 4, is characterized in that: described jack (4) is slim jack.
5. device according to claim 4, it is characterized in that: described hydraulic pump source comprises variable-frequency motor (9), variable-frequency motor (9) is connected with output mouth oil pump (8), and two delivery outlets of output mouth oil pump (8) are connected with two jack (4) respectively by flexible pipe (10); Hydraulic pump source also comprises a control cabinet (11), programmable logic controller (12) is provided with in control cabinet (11), programmable logic controller (12) is connected by holding wire with operation touch-screen (13) and frequency converter (14), frequency converter (14) controls variable-frequency motor (9) work, and the signal acquisition module of programmable logic controller (12) is connected with pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644107.XA CN104452677A (en) | 2014-11-14 | 2014-11-14 | Miter gate back drag rod prestress adjusting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410644107.XA CN104452677A (en) | 2014-11-14 | 2014-11-14 | Miter gate back drag rod prestress adjusting method and device |
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| Publication Number | Publication Date |
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| CN104452677A true CN104452677A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410644107.XA Pending CN104452677A (en) | 2014-11-14 | 2014-11-14 | Miter gate back drag rod prestress adjusting method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017572A (en) * | 2016-07-20 | 2016-10-12 | 大连海事大学 | Sensor arranging method for on-line monitoring healthy state of ship lock gate |
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| JP2000282443A (en) * | 1999-03-31 | 2000-10-10 | Nkk Corp | Master and slave gate and method for driving the same |
| CN102966070A (en) * | 2012-11-19 | 2013-03-13 | 三峡大学 | Hydraulic miter gate bottom pivot destruction and simulation laboratory device |
| CN203053622U (en) * | 2013-01-14 | 2013-07-10 | 昆明理工大学 | Testing device for tension stress of large dam steel gate back tie bar |
-
2014
- 2014-11-14 CN CN201410644107.XA patent/CN104452677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282443A (en) * | 1999-03-31 | 2000-10-10 | Nkk Corp | Master and slave gate and method for driving the same |
| CN102966070A (en) * | 2012-11-19 | 2013-03-13 | 三峡大学 | Hydraulic miter gate bottom pivot destruction and simulation laboratory device |
| CN203053622U (en) * | 2013-01-14 | 2013-07-10 | 昆明理工大学 | Testing device for tension stress of large dam steel gate back tie bar |
Non-Patent Citations (3)
| Title |
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| 张勤超等: "长洲水利枢纽船闸检修关键技术研究", 《水力发电》 * |
| 耿希明: "三峡船闸检修人字门背拉杆调整工艺及装备的应用", 《中国水运》 * |
| 胡新民等: "浅谈三峡永久船闸人字门背拉杆及其预应力张拉", 《水利电力机械》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017572A (en) * | 2016-07-20 | 2016-10-12 | 大连海事大学 | Sensor arranging method for on-line monitoring healthy state of ship lock gate |
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Application publication date: 20150325 |