CN103058092A - Hydraulic follow-up supporting device - Google Patents
Hydraulic follow-up supporting device Download PDFInfo
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- CN103058092A CN103058092A CN201310038243XA CN201310038243A CN103058092A CN 103058092 A CN103058092 A CN 103058092A CN 201310038243X A CN201310038243X A CN 201310038243XA CN 201310038243 A CN201310038243 A CN 201310038243A CN 103058092 A CN103058092 A CN 103058092A
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- oil
- nut
- hydraulic follow
- screw rod
- supporting device
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Abstract
The invention relates to the field of building lifting engineering and specifically relates to a hydraulic follow-up supporting device. The hydraulic follow-up supporting device comprises an oil motor, a small gear, a nut and a screw rod, wherein the lower end of the nut is fixedly connected with a big gear; the centre of circle of the big gear is coaxial to that of the nut; the small gear is engaged with the big gear; and the big gear is in threaded fit with the screw rod. The hydraulic follow-up supporting device is characterized in that an oil cylinder is added in the screw rod; the oil cylinder is partitioned into two independent spaces consisting of an upper oil cavity and a lower oil cavity by a piston; two openings are arranged on an oil pipelines; one opening is communicated with the upper oil cavity and the other opening is communicated with the lower oil cavity; and the piston rod and the nut are coaxially and fixedly connected with each other. The hydraulic follow-up supporting device has the following beneficial effects that the lean-against gap between pads can be eliminated, the non-clearance synchronism between the hydraulic follow-up supporting device and a lifting oil cylinder is ensured, a pad can be exchanged conveniently, and the hydraulic follow-up supporting device is high in security.
Description
Technical field
The present invention relates to buildings or structures jacking engineering field, be specifically related to a kind of hydraulic follow-up bracing or strutting arrangement.
Background technology
The mechanical servo device of prior art is to rise to drive the nut spiral by the motor driven wheel, and power is very little, and when servo-actuated jacking, mechanical screws just is pressed on the cushion block gently.Therefore in the Practical Project work progress, cushion block can not be done very accurately, exists and presses the gap, presses the gap and can reach several millimeters and do not wait to tens millimeters, and may fill up several cushion blocks below the follow-up mechanism, adds up, and presses the gap and differs just larger.Because each follow-up mechanism presses the gap and do not wait, when jacking cylinder was transferred to bearing capacity on the mechanical servo device, each follow-up mechanism was difficult to all carry.
Summary of the invention
The object of the invention is to, provide a kind of and can overcome the prior art defects, eliminate the hydraulic follow-up bracing or strutting arrangement that presses the gap between cushion block.
Technical scheme of the present invention is specific as follows: a kind of hydraulic follow-up bracing or strutting arrangement, comprise oil motor, miniature gears, nut, screw rod, and the lower end of nut is fixedly connected with the coaxial big gear wheel in a center of circle, miniature gears and big gear wheel engagement, big gear wheel cooperates with screw flight; Set up an oil cylinder in the screw rod, oil cylinder is separated into upper oil cavitie, two relatively independent spaces of lower oil cavitie by piston; Oil line pipe has two openings, and opening and upper oil cavitie connect, another opening and lower oil cavitie perforation; Piston rod is captiveed joint with nut is coaxial.
In the practical application, the hydraulic follow-up bracing or strutting arrangement can be just use, namely nut is upper, screw rod is lower; Also can turn use around, namely nut is lower, and screw rod is upper.The description of leading portion technical scheme all be with the hydraulic follow-up bracing or strutting arrangement just place and to be as the criterion, the upper-lower position relation between each constituent elements is described.
Set up an oil cylinder in screw rod, utilize the low pressure oil sources to drive oil motor, it is poor with drive nut to make upper and lower oil pocket form oil pressure.Its know-why is: by valve control oil-feed direction, during jacking, need screw rod to screw out nut, at this moment just allow the lower oil cavitie oil-feed, the upper oil cavitie oil return, take the low pressure oil sources as 2.5Mpa, high 360mm, the hydraulic follow-up bracing or strutting arrangement of external diameter 275mm is example, can make the hydraulic follow-up bracing or strutting arrangement produce nearly 10 tons pressure and be pressed on the cushion block, like this elimination cushion block press the gap, can keep between hydraulic follow-up bracing or strutting arrangement and the jacking cylinder zero-lash synchronously; When needs are changed cushion block, as long as with the commutation of oil-feed direction, allow the upper oil cavitie oil-feed, the lower oil cavitie oil return just can make screw rod cycle nut, and follow-up supporting device is packed up.Equally take the low pressure oil sources as 2.5Mpa, high 360mm, the hydraulic follow-up bracing or strutting arrangement of external diameter 275mm is example, because the hoisting force of oil cylinder is arranged, this hydraulic follow-up bracing or strutting arrangement can be mentioned the cushion block of three or four tons of weights completely, and the replacing cushion block can be carried out in bottom position, has improved operating efficiency.
In the poor drive nut by oil pressure, the oil motor Drive pinion, and miniature gears is to be meshed with the big gear wheel of nut lower end, big gear wheel cooperates with screw flight again, thereby big gear wheel can be followed, and the nut spiral rises or decline.Just in case the unforeseen circumstances of oil pipe burst occurs in the work progress, and big gear wheel will be blocked, prevent that nut from gliding suddenly because oil pressure suddenly disappears, and guaranteed the safety of construction.
Preferably, the lower surface of screw rod is connected with a top, and the upper surface of top is cambered surface, and the lower surface of top is the plane.The top can be bolted with screw rod.During the engineering jack-up construction, the jacking bearing surface of building or structures (for example bridge) may not be abswolute level, pushing up first end face designs for cambered surface, can make the contact surface angle of hydraulic follow-up bracing or strutting arrangement and jacking bearing surface do among a small circle adjustment, such as ± 3 ~ 5 °, under this situation, the hydraulic follow-up bracing or strutting arrangement is to stand upside down to place to use.
Preferably, the following top cap that also is connected with of described top, the top cap is the round pie steel plate.The effect of top cap is the area of thrust surface that increase the top, is in fact the area of thrust surface that increase the hydraulic follow-up bracing or strutting arrangement.
The invention has the advantages that: can eliminate the gap of pressing between cushion block, keep zero-lash synchronous between hydraulic follow-up bracing or strutting arrangement and the jacking cylinder; The replacing cushion block is convenient; Safe.
Description of drawings
Fig. 1 is the structural representation of embodiment;
Fig. 2 is the construction application scheme drawing of embodiment.
Description of reference numerals: 1-beam body, 2-cushion cap, 3-jack, 4-hydraulic follow-up bracing or strutting arrangement, 5-furred ceiling steel plate, 6-cushion block, 41-oil motor, 42-miniature gears, the 43-big gear wheel, 44-nut, 45-screw rod, the 451-upper oil cavitie, 452-lower oil cavitie, 461-piston, the 462-piston rod, 47-oil line pipe, 471-check valve, the 472-change-over valve, 48-top, 49-top cap.
The specific embodiment
Below in conjunction with Figure of description and embodiment the present invention is described in further detail.
Embodiment
A kind of hydraulic follow-up bracing or strutting arrangement 4 comprises oil motor 41, miniature gears 42, nut 44, screw rod 45, and the lower end of nut 44 is fixedly connected with the coaxial big gear wheel in a center of circle 43, miniature gears 42 and big gear wheel 43 engagements, big gear wheel 43 and screw rod 45 screws thread fit; Set up an oil cylinder in the screw rod 45, oil cylinder is separated into upper oil cavitie 451,452 two relatively independent spaces of lower oil cavitie by piston 461; Oil line pipe 47 has two openings, and opening and upper oil cavitie 451 connect, another opening and lower oil cavitie 452 perforations; Piston rod 462 and nut 44 are coaxial captives joint.
The lower surface of screw rod 45 is connected with a top 48, and the upper surface of top 48 is cambered surface, and the lower surface of top 48 is the plane.Top 48 is bolted with screw rod 45.The following top cap 49 that also is connected with of top 48, top cap 49 is the round pie steel plate.
Be to be as the criterion with the upright placement of hydraulic follow-up bracing or strutting arrangement in the present embodiment, the upper-lower position relation between each constituent elements is described.
Hydraulic follow-up bracing or strutting arrangement 4 is to control the oil-feed direction by 4 check valves 471 and 1 change-over valve 472, during jacking, needs screw rod 45 to screw out nuts 44, at this moment just allows lower oil cavitie 452 oil-feeds, upper oil cavitie 451 oil returns; When needs are changed cushion block, as long as with the commutation of oil-feed direction, allow upper oil cavitie 451 oil-feeds, lower oil cavitie 452 oil returns just can make screw rod 45 cycle nuts 44, and hydraulic follow-up bracing or strutting arrangement 4 is packed up.
The hydraulic follow-up bracing or strutting arrangement is the chief component of servo-actuated support system.Construction application in the bridge jacking engineering, referring to accompanying drawing 2, is fixed on the beam body jacking face with furred ceiling steel plate 5 and the bolt upper end with hydraulic follow-up bracing or strutting arrangement 4, is lined with several cushion blocks 6 on the cushion cap 2, and cushion block 6 pads are below follow-up supporting device 4.The effect of servo-actuated support system is to guarantee the safety of hydraulic lifting, and during jacking being provides top lift by jack 3.
The hydraulic follow-up bracing or strutting arrangement that the present invention protects is not limited to the above embodiments.Those skilled in the art make the change of unsubstantiality, all fall into protection scope of the present invention.
Claims (3)
1. hydraulic follow-up bracing or strutting arrangement, comprise oil motor, miniature gears, nut, screw rod, the lower end of nut is fixedly connected with the coaxial big gear wheel in a center of circle, miniature gears and big gear wheel engagement, big gear wheel cooperates with screw flight, it is characterized in that: set up an oil cylinder in the screw rod, oil cylinder is separated into upper oil cavitie, two relatively independent spaces of lower oil cavitie by piston; Oil line pipe has two openings, and opening and upper oil cavitie connect, another opening and lower oil cavitie perforation; Piston rod is captiveed joint with nut is coaxial.
2. hydraulic follow-up bracing or strutting arrangement according to claim 1, it is characterized in that: the lower surface of screw rod is connected with a top, and the upper surface of top is cambered surface, and the lower surface of top is the plane.
3. hydraulic follow-up bracing or strutting arrangement according to claim 2, it is characterized in that: the following top cap that also is connected with of described top, the top cap is the round pie steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038243.XA CN103058092B (en) | 2013-01-31 | 2013-01-31 | Hydraulic follow-up bracing or strutting arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038243.XA CN103058092B (en) | 2013-01-31 | 2013-01-31 | Hydraulic follow-up bracing or strutting arrangement |
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| Publication Number | Publication Date |
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| CN103058092A true CN103058092A (en) | 2013-04-24 |
| CN103058092B CN103058092B (en) | 2015-09-30 |
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| CN201310038243.XA Active CN103058092B (en) | 2013-01-31 | 2013-01-31 | Hydraulic follow-up bracing or strutting arrangement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253609A (en) * | 2013-04-27 | 2013-08-21 | 中国长江三峡集团公司 | Jacking fixing system |
| CN104988854A (en) * | 2015-05-26 | 2015-10-21 | 上海同罡建筑工程有限公司 | Method for replacing bridge support |
| CN107630857A (en) * | 2017-11-09 | 2018-01-26 | 北京公联洁达公路养护工程有限公司 | Double action strip is servo-actuated mechanical lock oil cylinder |
| CN109264613A (en) * | 2018-11-29 | 2019-01-25 | 上海同罡建筑工程有限公司 | A kind of continuous jack-up system of building and its jacking method |
| CN113683002A (en) * | 2021-08-24 | 2021-11-23 | 上海先为土木工程有限公司 | Synchronous falling protection system following jack and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07315775A (en) * | 1994-05-26 | 1995-12-05 | Kanji Tomidokoro | Speed changing ball screw jack device |
| CN101423184A (en) * | 2008-11-20 | 2009-05-06 | 无锡市三信传动控制有限公司 | Screw rod follow-up supporting mechanism of lifting device |
| CN101806152A (en) * | 2009-02-12 | 2010-08-18 | 上海天演建筑物移位工程有限公司 | Automatic following support system and method |
| CN203034829U (en) * | 2013-01-31 | 2013-07-03 | 上海同罡建筑工程有限公司 | Hydraulic following support device |
-
2013
- 2013-01-31 CN CN201310038243.XA patent/CN103058092B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07315775A (en) * | 1994-05-26 | 1995-12-05 | Kanji Tomidokoro | Speed changing ball screw jack device |
| CN101423184A (en) * | 2008-11-20 | 2009-05-06 | 无锡市三信传动控制有限公司 | Screw rod follow-up supporting mechanism of lifting device |
| CN101806152A (en) * | 2009-02-12 | 2010-08-18 | 上海天演建筑物移位工程有限公司 | Automatic following support system and method |
| CN203034829U (en) * | 2013-01-31 | 2013-07-03 | 上海同罡建筑工程有限公司 | Hydraulic following support device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253609A (en) * | 2013-04-27 | 2013-08-21 | 中国长江三峡集团公司 | Jacking fixing system |
| CN103253609B (en) * | 2013-04-27 | 2015-09-30 | 中国长江三峡集团公司 | Top jacking system |
| CN104988854A (en) * | 2015-05-26 | 2015-10-21 | 上海同罡建筑工程有限公司 | Method for replacing bridge support |
| CN104988854B (en) * | 2015-05-26 | 2017-02-01 | 上海同罡建筑工程有限公司 | Method for replacing bridge support |
| CN107630857A (en) * | 2017-11-09 | 2018-01-26 | 北京公联洁达公路养护工程有限公司 | Double action strip is servo-actuated mechanical lock oil cylinder |
| CN109264613A (en) * | 2018-11-29 | 2019-01-25 | 上海同罡建筑工程有限公司 | A kind of continuous jack-up system of building and its jacking method |
| CN113683002A (en) * | 2021-08-24 | 2021-11-23 | 上海先为土木工程有限公司 | Synchronous falling protection system following jack and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103058092B (en) | 2015-09-30 |
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