CN2321770Y - Semi-automatic steel cable jack - Google Patents

Abstract

The utility model relates to a semi-automatic steel cable jack used for producing prestressing concrete bridges. The utility model is composed of a steel cable prestressing telescope-feed jack, an oil passage system and an electrical apparatus control system. The semi-automatic control and automatic metering of the steel cable, the length of which is 68 m, can be realized, the expanding and pulling can be completed for once, the maximum expanding and pulling stroke is 530 mm, and the maximum expanding and pulling force is 230 KN. The utility model has the function of locking of shutdown and is suitable for medium and small sized concrete workshops.

Description

S. A. cable wire jack

The utility model relates to a kind of S. A. cable wire jack that the pre-stress concrete bridge is used of producing, and belongs to the vehicle for construction class.

Past produce give stress concrete bridge used give the level Four steel that the stress reinforcing bar is Φ 25mm, the jack model of using is YC-60 or YL-60, it is 25cm that the rising sharply most of this two kinds of jacks drawn stroke, pulling rate degree 8cm/ branch rises, but because the spike size is bigger, about reinforcing bar or cable wire, between left and right during distance 〉=8.5cm, above-mentioned two kinds of jacks still can use, in recent years, cable wire has substituted the level Four Steel Bar During gradually with its remarkable performance, and the length of giving stress beam when concrete is when 20m is following, and cable wire quantity is below 14, spacing 〉=8.5cm up and down, respectively rise with two YC-60 or YL-60 unit two ends and to draw once, can meet the demands substantially, but along with the concrete beam length increases, when it 〉=during 22m, the cable wire of every beam surpasses 18 more than, so about the cable wire, distance≤6.5cm between left and right, sometimes minor increment only is 5cm, and YC-60 or YL-60 jack just can't use at all.

The purpose of this utility model, design a semi-automatic cable wire jack, make rising of it draw stroke 〉=50cm, can realize once rising drawing for the 68m cable wire to length, and realize semiautomatic control, automatic gauge with assemblies such as button, relay, electromagnetic valve, sensor, electronic scales.

In order to achieve the above object, the utility model is achieved like this, whole utility model comprises three parts: the one, cable wire gives stress telescopic jack (hereinafter to be referred as jack); The 2nd, oil piping system; The 3rd, electrical apparatus control system.After its principle of work is the electrical appliance button switch starting, electrical motor work, and drive oil pump work, the high pressure oil that comes out by oil pump, behind by pass valve, power fluid has pressure stable, go to control the work of oil motor then through electromagnetic valve, Worm screw and worm-gear drive links in oil motor and the jack worm case, and the rotation of oil motor drives the rotation of Worm screw and worm-gear drive and screw rod, make the jack inner sleeve in outer cylinder body, stretch or contract, pay because of Worm screw and worm-gear drive and screw rod and all to be designed to the self-locking combination,, connecting the tension sensor at jack worm case end so jack has the parking auto-lock function, sensor output links with the electronic scale input, have breach on the overcoat cylindrical shell of jack, and two terminal limit switches are housed, wherein one is that lead limit switch is stretched out in control, and connect with the quantitative micro-switch of electronic scale, constitute the automatic gauge purpose of giving quantitative automatic cut-out, another is control retract stroke limit switch, and the utility model is described in further detail below in conjunction with accompanying drawing:

Accompanying drawing 1 is the utility model telescopic jack structural representation,

Accompanying drawing 2 is the utility model sleeve-type oil piping system schematic diagram,

Accompanying drawing 3 is the utility model sleeve-type electrical equipment control schematic diagram,

With reference to figure 1,2,3, the utility model is made up of three parts: first is cable wire Give the telescopic jack of stress; It is by control retract stroke limit switch (1), and control is stretched out Lead limit switch (2), outer cylinder body (3), inner sleeve (4), ground tackle seat (5), Ground tackle (6), screw rod (7), nut (8), worm gear case (9), sensor (10) Form, two finishing limit switches are housed, wherein one at the outer cylinder body (3) of jack Be control retract stroke limit switch (1); Another stretches out lead limit switch (2) for control, And connect with the quantitative microswitch of electronic scale, consist of the automatic gauge order of quantitative automatic cut-out , have the cylinder of a breach on the outer sleeve (3), make lead limit switch (2) Pulley stretches to inner sleeve (4) by breach, in order to strengthen outer cylinder body intensity, is cooperating ground tackle One end of seat (5) strengthens wall thickness and shrinks bore, and travel switch (1) just is installed in heavy wall On the outer sleeve, inner sleeve (4) one ends connect with ground tackle seat (5), the other end and nut (8) One side is joined, and nut (8) is by screw thread and screw rod engagement, and screw rod (7) center is split into circle The hole, the interior coaxial one that is connected into of worm gear of screw rod (7) and worm gear case (9) simultaneously, worm gear Oil motor (11) is housed on the case (9), and with worm gear case in worm screw link, form oily horse Reach that worm screw, worm-drive that (11) drive are paid and screw rod, nut transmission are paid two covers of combination The tube jack is paid because of Worm screw and worm-gear drive and screw rod and all to be designed to self-locking combination, stops so jack has The car AutoLock feature, worm gear case (9) opposite side is equipped with sensor (10), sensor (10) Output and electronic scale (17) join, convenient cable wire (18) passes very heavy in order to work The top centre bore is in ground tackle seat (5), ground tackle (6), screw rod (7), the sensor (10) The hole needs with one heart, and second portion is oil piping system, and it is by oil motor (11), magnetic valve (12), Overflow valve (13), motor (14), oil pump (15), fuel tank (16) form, electricity When motivation is rotated, drive oil pump (15) work, make oil pump (15) output high-pressure work oil, Behind the working oil process overflow valve (13), have stable pressure, deliver to then magnetic valve (12), Go to control suitable, the backwards rotation of oil motor (11) by magnetic valve (12), each is organized between the body Connect with oil pipe. Third part is electrical apparatus control system, by 7 press button AN1-7, Contactor J1, auxiliary reclay J2 and J3 form, and major loop 380V power supply passes through contactor J1 normally opened contact and motor (14) join, and the work of control loop is supplied by the 220V power supply Electricity, it is by 7 press button AN1-7, contactor J1, auxiliary reclay J2, J3 etc. Form, when button AN2 presses, the J1 energising, four normally opened contacts of J1 are connected electricity Motivation (14) work drives oil pump (15) work, and when pressing the button AN3, J1 loses Electricity, motor stops, button AN4, AN5, AN6 and auxiliary reclay J2 coil, OK Degree bit switch (2) output line and electronic scale (17) quantitatively microswitch output line are connected on Together, and button AN6, AN4, AN7 and auxiliary reclay J3 coil, stroke limit leave Close (1) output line and be cascaded, and with after above-mentioned three groups of parallel connections, with press button AN1 Be connected in series on the 220V power supply. The normally opened contact of auxiliary reclay J2 is with magnetic valve (12) The Y1 coil tandem that makes inner sleeve jacking function, and the normally opened contact of J3 and magnetic valve (12) Another group make the Y2 coil tandem of inner sleeve retraction, these two groups with above-mentioned three groups also Be connected to behind the connection on the 220V power supply. AN4 and AN6 are the block push button switch, when pressing AN4 The time AN6 tripping, the J2 energising, J2 normally opened contact closure, magnetic valve is connected, the working oil warp Magnetic valve (12) makes oil motor (11) work, and by Worm screw and worm-gear drive in the worm gear case, drives Jack inner screw (7) rotation, and by nut (8) interlock inner sleeve (4) and ground tackle seat (5) stretch out, when protruding into certain position, travel switch or give and decide the electronic scale microswitch Tripping is to stop position. Otherwise when pressing the button AN6, AN4 tripping, auxiliary reclay J3 moves back electricity, J3 normally opened contact closure, and another group coil of magnetic valve Y2 gets electric, and magnetic valve is cut To the other end, the working oil that passes through makes the oil motor counter-rotating, orders about the inner sleeve retrude, when falling back on During certain position, lead limit switch (1) tripping and stopping. Thereby composition Semi-automatic cable Give the stress jack.

Embodiment of the present utility model, the outer cylinder body internal diameter is Φ 124mm, and external diameter is Φ 140mm, and length is 680mm, interior cover is with internal diameter Φ 96mm, external diameter is Φ 112mm, and length is 650mm, and screw rod T68 * 12 length are 620mm, internal diameter is Φ 9mm, oil motor adopts BM-C-125, and electronic scale DCZ-1, sensor are BLR-1, drawing stroke so rise sharply most is 535mm, maximum tension is 230KN, and during work, cable wire (18) penetrates from the jack centre hole, and make jack near stylobate, behind the break adrift tool (6), just can rise and draw, when pedestal length≤68m, can realize semiautomatic control to single cable wire, automatic gauge is once finished to rise and is drawn, and when pedestal length＞68m, need repeatedly rise and draw.

The utlity model has semiautomatic control, automatic gauge and shutdown lock function, operation Convenient, the characteristics such as with low cost are applicable to that middle-size and small-size concrete workshop uses.

Claims (3)

1. S. A. cable wire jack of being made up of jack, oil piping system and electric-control system is characterized in that:

1) telescopic jack is arranged, it is by lead limit switch (1), (2), outer cylinder body (3), inner sleeve (4), ground tackle seat (5), ground tackle (6), screw rod (7), nut (8), worm case (9), sensor (10) is formed, lead limit switch (1) is installed on the heavy wall outer cylinder body (3), lead limit switch (2) is installed in the outer cylinder body indentation, there, and make the pulley of travel switch (2) stretch to inner sleeve (4) by breach, inner sleeve (4) one ends connect with ground tackle seat (5), the other end and nut (8) outside joins, nut (8) is meshed with screw rod (7) by screw thread, while screw rod (7) and coaxial the joining together of the interior worm gear of worm case (9), oil motor (11) is housed on the worm case (9), and with worm case in worm screw link

2) oil piping system is made up of oil motor (11), electromagnetic valve (12), by pass valve (13), electrical motor (14), oil pump (15), fuel tank (16), link with oil pipe between them,

3) electrical apparatus control system is by 7 button switch AN1-7, contactless switch J1, intermediate relay J2, J3 forms, major loop 380V power supply joins by contactless switch J1 open contact and electrical motor (14), the controller loop is powered by 220V, button AN2, AN3 connects with J1, button AN4, AN5, AN6 and intermediate relay J2 coil, lead limit switch (2) output line and electronic scale (D) quantitatively micro-switch output line are cascaded, and AN6, AN4, AN7 and intermediate relay J3 coil, the output line of lead limit switch (1) is cascaded, and will be connected in series on the 220V power supply with button AN1 after above-mentioned three groups of parallel connections, the Y1 coil tandem of the open contact of intermediate relay J2 and electromagnetic valve (12), and another group Y2 coil of J3 open contact and electromagnetic valve (12) is connected, and these two groups are connected to the 220V power supply with above-mentioned three groups after in parallel.

2. S. A. cable wire jack according to claim 1, it is characterized in that paying by the transmission that transmission is paid and worm screw, worm gear are formed that a screw rod 7, nut 8 are formed, worm case one side is equipped with sensor (10), and sensor (10) connects with the electronic scale (17) of indication tension.

3. S. A. cable wire jack according to claim 1 is characterized in that outer cylinder body (3) is at the cylinder of an end that cooperates ground tackle (5) for increasing wall thickness and contraction bore.

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