CN104261290A - Control system for automatic jacking tank of electric hoists - Google Patents
Control system for automatic jacking tank of electric hoists Download PDFInfo
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- CN104261290A CN104261290A CN201410409633.8A CN201410409633A CN104261290A CN 104261290 A CN104261290 A CN 104261290A CN 201410409633 A CN201410409633 A CN 201410409633A CN 104261290 A CN104261290 A CN 104261290A
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- electric block
- cell body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/485—Control devices automatic electrical
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- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
The invention relates to a control system for an automatic jacking tank of electric hoists. The control system comprises n central supports, n electric hoists, a control device, a positioning device and a slideway, the central supports are fixedly arranged on the inner side of the tank, the electric hoists are fixed on the central supports, the electric hoists are divided into basic electric hoists and adjusting electric hoists, the positioning device is mounted on the lower portion of the tank, the slideway is arranged at positions on the central supports and corresponding to the positioning device and matched with the positioning devices, and the control device comprises a PLC (programmable logic controller), a weighted limiting switch and at least one inclination angle sensor. By the control system, the problems of positioning of the lower portion of the tank and inclination degree control of the tank or re-balancing of the tank after inclining when the jacking tank with the electric hoists invertedly mounted are solved.
Description
Technical field
The present invention relates to crane field, particularly relate to a kind of control system of electric block automatic lifting cell body, be mainly used in industrial cell body upside-down construction.
Background technology
Current, industry cell body upside-down construction mainly adopts electric block and hydraulic efficiency gear to carry out, electric block flip-clip is compared with hydraulic efficiency gear flip-clip, electric block jacking flip-clip has the advantages such as equipment is simple, easy and simple to handle, cheap, and do not use the consumable store such as hydraulic oil, pressure parts, make to occur without leakage of oil, pollution-free to working environment, also because commissure has leakage of oil to exist, harmful effect is not produced to cell body welding process.But electric block flip-clip exists two large problems to be needed to solve: one is the orientation problem of cell body in jacking process, another is exactly that cell body cell body control of gradient or cell body in jacking process tilt equilibrium problem again.
Concrete, the orientation problem of cell body in jacking process is, need lifting space between the pillar of center frame and cell body, generally electric block is stressed for tilting, and makes the cell body center of circle, the center frame center of circle and the cell body base plate center of circle there is dynamic deviation in cell body jacking process.The cell body center of circle and the deviation in the center frame center of circle not only have impact on the quality that top cell body docks with lower groove body, also add control difficulty, and the deviation in the cell body center of circle and the cell body base plate center of circle and then have impact on the alignment quality of final cell body and base plate.In addition, in cell body jacking process, the deviation in the cell body center of circle and the center frame center of circle also can cause the unbalance stress of the electric block of different azimuth under cell body state of equilibrium, and then be amplified in the dynamic deviation of electric block load of different azimuth in cell body jacking process, increase the difficulty of cell body control of gradient.
Secondly, cell body cell body control of gradient or cell body in jacking process tilt equilibrium problem again, deviation except the cell body center of circle and the center frame center of circle causes that electric block is stressed be there are differences, because the motor of electric block also inevitably there are differences at synchronization aspects, the electric block load that cell body tilts more to increase each orientation is inconsistent, namely cell body degree of dip is larger, and the electric block load difference in each orientation is also larger.Simultaneously, this situation also increases the difficulty adopting electric block to control the degree of dip of cell body, the safety factor that result also in separate unit electric block must obtain larger, guarantee separate unit electric block can meet the requirement of jacking process under limit load, and reason electric block overrun does not cause corresponding accident.
In addition, adopt electric block to carry out the adjustment of automatic lifting control ratio hydraulic efficiency gear and control there is larger difficulty, when adopting frequency converter to carry out adjustment control, needing the number of units of frequency converter more and causing financial cost larger; And Electronic control loop can only control in forward adjustment, and is not easy to realize oppositely adjusting control, makes in automatic lifting process, controls and balance difficulty comparatively large, generally to adopt manually or manpower regulates.
Summary of the invention
The object of the present invention is to provide a kind of control system of electric block automatic lifting cell body, to solve behind the location, cell body bottom and cell body control of gradient or cell body inclination adopting electric block flip-clip jacking cell body to exist equilibrium problem again.
The object of the invention is to realize by the following technical solutions.The invention provides a kind of control system of electric block automatic lifting cell body, comprise n center frame and n platform electric block, this n center frame arranges the inner side being fixed on cell body, and n platform electric block is fixed on center frame, the top sling point of electric block and lower lifting structure are o'clock on a plumb bob vertical; It also comprises control setup, registration device and slideway; Wherein, this electric block is divided into basic electric block and adjustment electric block; This registration device is arranged on the bottom of cell body, and this installation of slide track on center frame and the position corresponding with registration device, matches with registration device; Concrete, this control setup comprises PLC control cabinet, weight hammer type limit switch and at least one obliquity sensor; And this PLC control cabinet comprises PLC, basic electric block control loop and adjustment electric block control loop, described basic electric block control loop and adjustment electric block control loop respectively with basic electric block with adjust electric block and be connected; This weight hammer type limit switch is connected with this PLC, and the normal opened contact of weight hammer type limit switch access PLC, the normally closed contact of weight hammer type limit switch is linked into basic electric block control loop and adjustment electric block control loop; This obliquity sensor is arranged in the central water plane at cell body top, and is connected with PLC; Said n platform electric block is evenly divided into m the subregion A with identical electric block by orientation
1, A
2a
m-1, A
m, the electric block of each subregion is divided into n/m-(1 ~ 2) this electric block of stylobate and 1 ~ 2 adjustment electric block; And the middle part of each subregion arranges the radius of circle azimuth axis from cell body center of circle points toward edge, and 1 ~ 2 adjusts middle part or the both sides that electric block is arranged on the axis of each subregion.
Object of the present invention also can be applied to the following technical measures to achieve further.
The control system of aforesaid electric block automatic lifting cell body, wherein this obliquity sensor selects single-shaft inclination angle sensor or double-shaft tilt angle sensor.
The control system of aforesaid electric block automatic lifting cell body, wherein each center frame comprises pillar, column braces and center pull rod; This pillar is evenly arranged fixing inside cell body, and this column braces is arranged between two pillars, and this center pull rod is connected between pillar and cell body center; And this electric block is fixed in the upper bracket of pillar.
The control system of aforesaid electric block automatic lifting cell body, it also comprises piston ring, and this piston ring is fixed on the middle and lower part, inner side of cell body, and the relevant position of this piston ring bottom and pillar is provided with piston ring height arranges scale.
The control system of aforesaid electric block automatic lifting cell body, wherein this registration device comprises roller, recoil spring and strut member, this strut member is welded on cell body or piston ring, have spring strut, this recoil spring is arranged in the spring strut of strut member, and this roller is with the cylinder of the similar piston inserted in spring strut, and this cylinder in the spring strut of this strut member is while be connected with recoil spring, another side is connected with roller, this roller and ramps contact, can roll in slideway.
The control system of aforesaid electric block automatic lifting cell body, wherein this m selects 4 or 8; When m is 4, n platform electric block is evenly divided into 4 subregion A with identical electric block by orientation
1, A
2, A
3, A
4, this control setup adopts 4 zonal control modes, and 4 described zonal control modes refer to that electric block is divided into identical 4 regions A1, A2, A3, A4 along cell body, and arrange the radius of circle azimuth axis from cell body center of circle points toward edge in the middle part of described 4 regions; Described weight hammer type limit switch is 4, is evenly arranged on the axis of each subregion; And adopting 1 double-shaft tilt angle sensor, this double-shaft tilt angle sensor is arranged in the central water plane at cell body top, the axis of corresponding described 4 subregions of axis difference of this double-shaft tilt angle sensor, and corresponding with the adjustment electric block in each subregion; When m is 8, n platform electric block is evenly divided into 8 subregion A with identical electric block by orientation
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8, this control setup adopts 8 zonal control modes, and 8 described zonal control modes refer to that electric block is divided into identical 8 regions A1, A2, A3, A along cell body
4, A
5, A
6, A
7, A
8, and the radius of circle azimuth axis from cell body center of circle points toward edge is set in the middle part of described 8 regions; Described weight hammer type limit switch is 8, is evenly arranged on the axis of each subregion; And adopt 2 double-shaft tilt angle sensors, this double-shaft tilt angle sensor is arranged in the central water plane at cell body top, and arrange near cell body edge, two X of these 2 double-shaft tilt angle sensors, Y-axis difference+45 or-45 degree, the axis of corresponding described 8 subregions of axis difference of this double-shaft tilt angle sensor, and corresponding with the adjustment electric block in each subregion.
The control system of aforesaid electric block automatic lifting cell body, wherein the angu-lar deviation θ of this cell body exceedes setting permissible value θ
1Stime dynamic conditioning mode comprise cell body jacking number of times percentum N%≤50% ~ 90% and N% > 66% ~ 100%; When this cell body start jacking and recorded jacking number of times percentum N%≤50% ~ 90% time, be only that all basic electric blocks start, all adjustment electric blocks wouldn't start; As the X-axis of double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Y>=-3 ~-15 when spending, and the adjustment electric block on described 4 subregions or the corresponding axis direction of 8 subregions starts; When this double-shaft tilt angle sensor angu-lar deviation θ>=+0 monitored on the adjustment electric block axis direction started is spent, the adjustment electric block started is out of service; When this cell body start jacking and recorded jacking number of times percentum N%>=66% ~ 90% time, all basic electric blocks and adjustment electric block start simultaneously; As the X-axis of double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ywhen>=+3 ~ 15 degree, the adjustment electric block on described 4 subregions or the corresponding axis direction of 8 subregions is out of service; When this double-shaft tilt angle sensor angu-lar deviation θ>=-0 monitored on adjustment electric block axis direction out of service is spent, adjustment electric block out of service is reset.
The control system of aforesaid electric block automatic lifting cell body, wherein the angu-lar deviation θ of this cell body exceedes setting limit θ
2Stime dynamic conditioning halt mode be, as the X-axis of this double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ywhen>=+10 ~ 20 degree, on the axis direction of described 4 subregions or 8 subregions, basic electric block and the adjustment electric block of whole subregion are out of service; Monitor angu-lar deviation θ>=+0 degree on the axis direction of other subregion when double-shaft tilt angle sensor, then the basic electric block in the subregion at respective axis place and adjustment electric block out of service; After whole electric block is out of service, judge whether any one normal opened contact in 4 or 8 weight hammer type limit switches closes by described PLC, appoint in normal opened contact and have one closedly then to terminate jacking process, then restart jacking process as neither one in normal opened contact is closed.
The control system of aforesaid electric block automatic lifting cell body, wherein when described PLC any one normal opened contact monitored in all weight hammer type limit switches closes, described PLC exceedes setting limit θ by the angu-lar deviation θ of cell body
2Stime dynamic stop adjustment mode carry out dynamic conditioning shutdown; And any one normally closed contact in all weight hammer type limit switches is when disconnecting, described 4 subregions or the corresponding electric block loop of 8 subregions disconnect, electric block in respective partition is out of service, until the normally closed contact of all weight hammer type limit switches disconnects, the electric block in respective partition is out of service.
By technique scheme, the control system of electric block automatic lifting cell body of the present invention at least has following advantages and beneficial effect: by the control system of electric block automatic lifting cell body of the present invention, to solve behind the location, cell body bottom and cell body control of gradient or cell body inclination adopting electric block flip-clip jacking cell body to exist equilibrium problem again, and the control system of entirety is relatively simple, control method is safe and reliable, less input, and economic effects is better.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1: be the birds-eye view of the control system of the electric block automatic lifting cell body of embodiments of the invention.
Fig. 2: be the section-drawing of the control system of the electric block automatic lifting cell body of embodiments of the invention.
Fig. 3: be the birds-eye view of the control system of the electric block automatic lifting cell body of another embodiment of the present invention.
Fig. 4: be the section-drawing of the control system of the electric block automatic lifting cell body of another embodiment of the present invention.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of control system of a kind of electric block automatic lifting cell body proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Consulting shown in Fig. 1 and Fig. 2, is birds-eye view and the section-drawing of the control system of the electric block automatic lifting cell body of embodiments of the invention; Consulting shown in Fig. 3 and Fig. 4, is birds-eye view and the section-drawing of the control system of the electric block automatic lifting cell body of another embodiment of the present invention; Wherein the control system of this electric block automatic lifting cell body comprises n center frame 1, piston ring 2, n platform electric block 3, control setup 4, registration device 5 and slideway 6 (not shown).
Concrete, each center frame 1 comprises pillar 1-1, column braces 1-2 and center pull rod 1-3; Wherein, the radical of this pillar 1-1 is n root, and n root pillar 1-1 is evenly arranged fixing inside cell body 8, becomes sub-circular; This piston ring 2 is fixed on the middle and lower part, inner side of cell body 8, and the relevant position of this piston ring 2 bottom and each pillar 1-1 is provided with piston ring height and arranges scale 13, for controlling height and the levelness of piston ring 2 installation; And n platform electric block 3 is separately fixed in the upper bracket of every root pillar 1-1, this column braces 1-2 is arranged between two pillar 1-1, plays the effect of support, and this center pull rod 1-3 is connected between pillar 1-1 and cell body 8 center; This registration device 5 is arranged on the bottom of cell body 8 and on the position that piston ring 2 is corresponding with every root pillar 1-1, this slideway 6 is arranged on position on every root pillar 1-1 and corresponding with piston ring 2, matches with registration device 5; Meanwhile, every platform electric block 3 lower end suspension hook is fixed on lower part positioning device 5 body of this piston ring 2, and the top sling point of every platform electric block 3 and lower lifting structure are o'clock on a plumb bob vertical; This electric block 3 is divided into basic electric block 3-1 and adjustment electric block 3-2.
This registration device 5 comprises roller 5-1, recoil spring 5-2 and strut member 5-3; This strut member 5-3 is welded on piston ring 2, there is spring strut, this recoil spring 5-2 is arranged in the spring strut of strut member 5-3, this roller 5-1 inserts the cylinder of the similar piston in spring strut with one, and this cylinder in the spring strut of this strut member 5-3 is while be connected with recoil spring 5-2, another side is connected with roller 5-1, and in fact, the relation of this cylinder and spring strut is equal to the relation of hydraulic actuating cylinder and piston.This slideway 6 is arranged on every root pillar 1-1, and roller 5-1 can roll in slideway 6.This registration device 5 is mainly used in the control of cell body 8 concentricity, and in cell body 8 jacking process, the adjustment of the buffering between cell body 8 and slideway 6 and between the two spacing.When requiring higher, this registration device 5 can adopt the cylinder in hydraulic efficiency gear replacement recoil spring 5-2, spring strut and spring strut.The location of this registration device 5 is in fact control the distance between cell body and every root pillar 1-1 in the horizontal plane, indirectly controls the concentricity between multilayer cell body plate.
In fact, in the present invention, this piston ring 2 is not essential, is associated with the intensity of cell body itself.When not having piston ring 2, the strut member 5-3 of this registration device 5 is directly welded on cell body, is beneficial to the control of the concentricity of cell body 8.
This control setup 4 comprises PLC control cabinet 7, weight hammer type limit switch 9 and at least one obliquity sensor 10; And this PLC control cabinet 7 comprises PLC, basic electric block control loop and adjustment electric block control loop, described basic electric block control loop or adjustment electric block control loop adopt capacitor switching formula AC contactor, and respectively with basic electric block with adjust electric block and be connected; This weight hammer type limit switch 9 is connected with this PLC, concrete connects by control cables, and the normal opened contact of weight hammer type limit switch 9 access PLC, as the switch input contact of PLC, and the normally closed contact of weight hammer type limit switch 9 is linked into basic electric block control loop and adjustment electric block control loop, it is on-off signal; This obliquity sensor 10 is arranged in the central water plane at cell body 8 top, on the steel structure at concrete is cell body 8 top, and is such as connected with this PLC by twisted-pair feeder, exports signal to PLC.
In actual applications, this obliquity sensor 10 can select single-shaft inclination angle sensor or double-shaft tilt angle sensor, determines, play respective action according to actual demand.Certainly, when adopting single-shaft inclination angle sensor, corresponding circuit can be more complex, when basic connection is the same.
In addition, in order to control cell body degree of dip better, said n platform electric block is evenly divided into m the subregion A with identical electric block by orientation
1, A
2a
m-1, A
m, the electric block of each subregion is divided into n/m-(1 ~ 2) this electric block of stylobate and 1 ~ 2 adjustment electric block; And the middle part of each subregion arranges the radius of circle azimuth axis from cell body center of circle points toward edge, and 1 ~ 2 adjusts middle part or the both sides that electric block is arranged on the axis of each subregion.Generally, n is the integral multiple of m, is beneficial to operation.
Concrete again see Fig. 1 ~ Fig. 4, arrange below for two example two, carry out more detailed introduction to the present invention, in the present embodiment, this m is chosen as 4 or 8.
Concrete, n platform electric block 3 is evenly divided into 4 subregion A with identical electric block 3 by the present invention by orientation
1, A
2, A
3, A
4or 8 subregion A
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8; Detailed, the electric block 3 of each subregion is divided into n/4-(1 ~ 2) or n/8-(1 ~ 2) this electric block of stylobate 3-1 and 1 ~ 2 adjustment electric block 3-2.Described 4 subregions or 8 subregion dynamic conditioning restart jacking process again until limit switch SQ action after shutting down, more described 4 subregions or the 8 subregion jackings mode that dynamic conditioning shuts down that puts in place of carrying out controls.
This control setup 4 adopts 4 subregions or 8 zonal control modes, 4 described zonal control modes refer to that electric block is divided into identical 4 regions A1, A2, A3, A4 along cell body 8, and arrange the radius of circle azimuth axis B from cell body 8 center of circle points toward edge in the middle part of described 4 regions
x11, B
x12, B
y11, B
y12be provided with 4 groups of loops of corresponding electric block 3 by 4 described subregions in described PLC control cabinet 7, often organize loop and comprise the individual basic electric block control loop of n/4-(1 ~ 2) and 1 ~ 2 adjustment electric block control loop, 1 ~ 2 described adjustment electric block 32 is arranged on the axis B of each subregion
x11, B
x12, B
y11or B
y12middle part or both sides.In the present embodiment, this weight hammer type limit switch 9 comprises 4 weight hammer type limit switches 9-1,9-2,9-3 and 9-4; Described weight hammer type limit switch 9-1,9-2,9-3 and 9-4 are evenly arranged in the axis B of each subregion
x11, B
x12, B
y11or B
y12on, or the top of pillar 1-1 in respective axis.
In addition, a normally closed contact SQ of 4 weight hammer type limit switches 9-1,9-2,9-3 and 9-4
1-1, SQ
1-2, SQ
1-3, SQ
1-4be connected to the basic electric block control loop of place subregion and adjust in electric block control loop, and an one normal opened contact SQ
2-1, SQ
2-2, SQ
2-3, SQ
2-4be connected on I1 ~ I4 terminal of described PLC.
In the present embodiment, and select 1 double-shaft tilt angle sensor, this double-shaft tilt angle sensor 10 is arranged in the central water plane at cell body 8 top, the axis X of this double-shaft tilt angle sensor 10
11, X
12, Y
11, Y
12the axis B of corresponding described 4 subregions respectively
x11, B
x12, B
y11, BY
12, and corresponding with the adjustment electric block 3-2 in each subregion; The X of this double-shaft tilt angle sensor 10, Y-axis analog signal output adopt twisted pair line connection on I7 ~ I8 terminal of described PLC.
8 described zonal control modes refer to that electric block is divided into 8 identical region A along cell body 8
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8, and the radius of circle azimuth axis B from cell body 8 center of circle points toward edge is set in the middle part of described 8 regions
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21, B
y22be provided with 8 groups of loops of corresponding electric block 3 by 8 described subregions in described PLC control cabinet 7, often organize loop and comprise the individual basic electric block control loop of n/8-(1 ~ 2) and 1 ~ 2 adjustment electric block control loop, 1 ~ 2 described adjustment electric block 3-2 is arranged on the axis B of each subregion
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22middle part or both sides.
In addition, this weight hammer type limit switch 9 comprises 8 weight hammer type limit switches 9-1,9-2,9-3,9-4,9-5,9-6,9-7 and 9-8, and described weight hammer type limit switch is evenly arranged in the axis B of each subregion
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22on, or the top of pillar 1-1 in respective axis.
Wherein, a normally closed contact SQ of 8 weight hammer type limit switches 9-1,9-2,9-3,9-4,9-5,9-6,9-7 and 9-8
1-1, SQ
1-2, SQ
1-3, SQ
1-4, SQ
1-5, SQ
1-6, SQ
1-7, SQ
1-8be connected to the basic electric block control loop of place subregion and adjust in electric block control loop, and an one normal opened contact SQ
2-1, SQ
2-2, SQ
2-3, SQ
2-4, SQ
2-5, SQ
2-6, SQ
2-7, SQ
2-8be connected on I1 ~ I8 terminal of described PLC.
In the present embodiment, this 8 zonal control mode adopts 2 double-shaft tilt angle sensors 10, i.e. double-shaft tilt angle sensor 10-1 and double-shaft tilt angle sensor 10-2, and this double-shaft tilt angle sensor 10-1,10-2 are arranged on cell body 8 top, axis B
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22horizontal surface on, and near cell body 8 edge arrange; Wherein, two X of 2 double-shaft tilt angle sensors 10-1,10-2, Y-axis difference+45 or-45 degree, and with the axis B of 8 subregions
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22parallel, corresponding with the adjustment electric block 32 in each subregion; The X of this double-shaft tilt angle sensor 10-1,10-2, Y-axis analog signal output adopt twisted pair line connection on I9 ~ I12 terminal of PLC.
Certainly, in the present invention, this m can select 3,5,6 or 7 etc., but such subregion will be incompatible with the axis of double-shaft tilt angle sensor, at this moment just can select single-shaft inclination angle sensor, determines according to actual demand, and the present invention is not limited.
This registration device 5 is for the upper angle deviate θ of the azimuth deviation and described cell body 8 that limit described cell body 8, and θ>=θ
1S, θ
1Sfor setting permissible value; Meanwhile, the adjustment that this registration device 5 carries out above-mentioned 4 subregions or 8 subregions controls, and makes the upper angle deviate θ > θ of cell body 8
2S, θ
2Sfor setting limit deviation value.
The angu-lar deviation θ of this cell body 8 exceedes setting permissible value θ
1Stime dynamic conditioning mode comprise cell body 8 jacking number of times percentum N%≤50% ~ 90% and N% > 66% ~ 100%; When this cell body 8 start jacking and recorded jacking number of times percentum N%≤50% ~ 90% (setting value) time, be only that all basic electric block 3-1 start, all adjustment electric block 3-2 wouldn't start; When the X-axis of double-shaft tilt angle sensor 10 or the angle negative bias difference of Y direction (detailed, this angle negative bias difference compares with the axis by cell body horizontal surface center, angle higher than this horizontal axis is just, angle lower than this horizontal axis is negative, namely by the axis of this horizontal axis at cell body horizontal surface center and the X-axis of double-shaft tilt angle sensor 10 or Y direction comparing in different directions) θ
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Yduring>=-3 ~-15 degree (setting permissible value), the adjustment electric block 3-2 on described 4 subregions or the corresponding axis direction of 8 subregions starts; When this double-shaft tilt angle sensor 10 angu-lar deviation θ>=+0 monitored on the adjustment electric block 3-2 axis direction started is spent, the adjustment electric block 3-2 started is out of service; When this cell body 8 start jacking and recorded jacking number of times percentum N%>=66% ~ 90% (setting value) time, all basic electric block 3-1 and adjustment electric block 3-2 start simultaneously; As the X-axis of double-shaft tilt angle sensor 10 or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ytime>=+3 ~ 15 degree (setting permissible value), the adjustment electric block 3-2 on described 4 subregions or the corresponding axis direction of 8 subregions is out of service; When this double-shaft tilt angle sensor 10 angu-lar deviation θ>=-0 monitored on adjustment electric block 3-2 axis direction out of service is spent, adjustment electric block 3-2 out of service resets.
The angu-lar deviation θ of this cell body 8 exceedes setting limit θ
2Stime dynamic conditioning halt mode be, as the X-axis of this double-shaft tilt angle sensor 10 or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ytime>=+10 ~ 20 degree (setting limit), the axis B of described 4 subregions or 8 subregions
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22on direction, basic electric block 3-1 and the adjustment electric block 3-2 of whole subregion are out of service; When double-shaft tilt angle sensor 10 monitors the axis B of other subregion
x11, B
x12, B
y11, B
y12, B
x21, B
x22, B
y21or B
y22angu-lar deviation θ>=+0 degree on direction, then the basic electric block 3-1 in the subregion at respective axis place and adjustment electric block 3-2 is out of service; After whole electric block 3 is out of service, judge whether any one normal opened contact in 4 or 8 weight hammer type limit switches 9-1,9-2,9-3,9-4,9-5,9-6,9-7,9-8 closes by described PLC, appoint in normal opened contact and have one closedly then to terminate jacking process, then restart jacking process as neither one in normal opened contact is closed, or restart jacking process after time delay 5 ~ 15S.
Wherein, when 9 action of weight hammer type limit switch, its normal opened contact closes, and normally closed contact is opened; When normal opened contact closes, be just connected with PLC, and tell PLC, the cell body jacking on an orientation or axis direction puts in place, and PLC carries out dynamic conditioning jacking and shutdown by blas.When normally closed contact is opened; just show that the cell body jacking on an orientation or axis direction puts in place; normally closed contact disconnects the control loop of the electric block of corresponding orientation; the electric block of corresponding orientation is shut down; the electric block control loop action of this process simultaneously in PLC and corresponding orientation, can increase the safety of system.If the reliability of PLC is high, this process can only action in PLC, and not action on electric block control loop; When degree of automation is low, also can only action on electric block control loop.
So when described PLC any one normal opened contact monitored in all weight hammer type limit switches 9 closes, described PLC exceedes setting limit θ by the angu-lar deviation θ of cell body 8
2Stime dynamic stop adjustment mode carry out dynamic conditioning shutdown.And any one normally closed contact in all weight hammer type limit switches 9 is when disconnecting, described 4 subregions or corresponding electric block 3 loop of 8 subregions disconnect, electric block 3 in respective partition is out of service, until the normally closed contact of all weight hammer type limit switches 9 disconnects, the electric block 3 in respective partition is out of service.
In sum, by the control system of electric block automatic lifting cell body of the present invention, to solve behind the location, cell body bottom and cell body control of gradient or cell body inclination adopting electric block flip-clip jacking cell body to exist equilibrium problem again, and the control system of entirety is relatively simple, control method is safe and reliable, less input, and economic effects is better.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. the control system of an electric block automatic lifting cell body, comprise n center frame and n platform electric block, this n center frame arranges the inner side being fixed on cell body, and n platform electric block is fixed on center frame, and the top sling point of electric block and lower lifting structure are o'clock on a plumb bob vertical;
It is characterized in that it also comprises control setup, registration device and slideway; Wherein, this electric block is divided into basic electric block and adjustment electric block; This registration device is arranged on the bottom of cell body, and this installation of slide track on center frame and the position corresponding with registration device, matches with registration device;
Concrete, this control setup comprises PLC control cabinet, weight hammer type limit switch and at least one obliquity sensor; And this PLC control cabinet comprises PLC, basic electric block control loop and adjustment electric block control loop, described basic electric block control loop and adjustment electric block control loop respectively with basic electric block with adjust electric block and be connected; This weight hammer type limit switch is connected with this PLC, and the normal opened contact of weight hammer type limit switch access PLC, the normally closed contact of weight hammer type limit switch is linked into basic electric block control loop and adjustment electric block control loop; This obliquity sensor is arranged in the central water plane at cell body top, and is connected with PLC;
Said n platform electric block is evenly divided into m the subregion A with identical electric block by orientation
1, A
2a
m-1, A
m, the electric block of each subregion is divided into n/m-(1 ~ 2) this electric block of stylobate and 1 ~ 2 adjustment electric block; And the middle part of each subregion arranges the radius of circle azimuth axis from cell body center of circle points toward edge, and 1 ~ 2 adjusts middle part or the both sides that electric block is arranged on the axis of each subregion.
2. the control system of electric block automatic lifting cell body according to claim 1, is characterized in that wherein this obliquity sensor selects single-shaft inclination angle sensor or double-shaft tilt angle sensor.
3. the control system of electric block automatic lifting cell body according to claim 1, is characterized in that wherein each center frame comprises pillar, column braces and center pull rod; This pillar is evenly arranged fixing inside cell body, and this column braces is arranged between two pillars, and this center pull rod is connected between pillar and cell body center; And this electric block is fixed in the upper bracket of pillar.
4. the control system of electric block automatic lifting cell body according to claim 1, is characterized in that it also comprises piston ring, and this piston ring is fixed on the middle and lower part, inner side of cell body, and the relevant position of this piston ring bottom and pillar is provided with piston ring height arranges scale.
5. the control system of the electric block automatic lifting cell body according to claim 1 or 3, it is characterized in that wherein this registration device comprises roller, recoil spring and strut member, this strut member is welded on cell body, there is spring strut, this recoil spring is arranged in the spring strut of strut member, this roller is with the cylinder of the similar piston inserted in spring strut, and this cylinder in the spring strut of this strut member is while be connected with recoil spring, another side is connected with roller, this roller and ramps contact, can roll in slideway.
6. the control system of electric block automatic lifting cell body according to claim 4, it is characterized in that wherein this registration device comprises roller, recoil spring and strut member, this strut member is welded on piston ring, there is spring strut, this recoil spring is arranged in the spring strut of strut member, this roller is with the cylinder of the similar piston inserted in spring strut, and this cylinder in the spring strut of this strut member is while be connected with recoil spring, another side is connected with roller, this roller and ramps contact, can roll in slideway.
7. the control system of electric block automatic lifting cell body according to claim 2, is characterized in that wherein this m selects 4 or 8;
When m is 4, n platform electric block is evenly divided into 4 subregion A with identical electric block by orientation
1, A
2, A
3, A
4, this control setup adopts 4 zonal control modes, and 4 described zonal control modes refer to that electric block is divided into identical 4 regions A1, A2, A3, A4 along cell body, and arrange the radius of circle azimuth axis from cell body center of circle points toward edge in the middle part of described 4 regions; Described weight hammer type limit switch is 4, is evenly arranged on the axis of each subregion; And adopting 1 double-shaft tilt angle sensor, this double-shaft tilt angle sensor is arranged in the central water plane at cell body top, the axis of corresponding described 4 subregions of axis difference of this double-shaft tilt angle sensor, and corresponding with the adjustment electric block in each subregion;
When m is 8, n platform electric block is evenly divided into 8 subregion A with identical electric block by orientation
1, A
2, A
3, A
4, A
5, A
6, A
7, A
8, this control setup adopts 8 zonal control modes, and 8 described zonal control modes refer to that electric block is divided into identical 8 regions A1, A2, A3, A along cell body
4, A
5, A
6, A
7, A
8, and the radius of circle azimuth axis from cell body center of circle points toward edge is set in the middle part of described 8 regions; Described weight hammer type limit switch is 8, is evenly arranged on the axis of each subregion; And adopt 2 double-shaft tilt angle sensors, this double-shaft tilt angle sensor is arranged in the central water plane at cell body top, and arrange near cell body edge, two X of these 2 double-shaft tilt angle sensors, Y-axis difference+45 or-45 degree, the axis of corresponding described 8 subregions of axis difference of this double-shaft tilt angle sensor, and corresponding with the adjustment electric block in each subregion.
8. the control system of electric block automatic lifting cell body according to claim 7, is characterized in that the angu-lar deviation θ of wherein this cell body exceedes setting permissible value θ
1Stime dynamic conditioning mode comprise cell body jacking number of times percentum N%≤50% ~ 90% and N% > 66% ~ 100%;
When this cell body start jacking and recorded jacking number of times percentum N%≤50% ~ 90% time, be only that all basic electric blocks start, all adjustment electric blocks wouldn't start; As the X-axis of double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Y>=-3 ~-15 when spending, and the adjustment electric block on described 4 subregions or the corresponding axis direction of 8 subregions starts; When this double-shaft tilt angle sensor angu-lar deviation θ>=+0 monitored on the adjustment electric block axis direction started is spent, the adjustment electric block started is out of service;
When this cell body start jacking and recorded jacking number of times percentum N%>=66% ~ 90% time, all basic electric blocks and adjustment electric block start simultaneously; As the X-axis of double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ywhen>=+3 ~ 15 degree, the adjustment electric block on described 4 subregions or the corresponding axis direction of 8 subregions is out of service; When this double-shaft tilt angle sensor angu-lar deviation θ>=-0 monitored on adjustment electric block axis direction out of service is spent, adjustment electric block out of service is reset.
9. the control system of electric block automatic lifting cell body according to claim 7, is characterized in that the angu-lar deviation θ of wherein this cell body exceedes setting limit θ
2Stime dynamic conditioning halt mode be, as the X-axis of this double-shaft tilt angle sensor or the angle negative bias difference θ of Y direction
11X, θ
12X, θ
11Y, θ
12Y, θ
21X, θ
22X, θ
21Yor θ
22Ywhen>=+10 ~ 20 degree, on the axis direction of described 4 subregions or 8 subregions, basic electric block and the adjustment electric block of whole subregion are out of service; Monitor angu-lar deviation θ>=+0 degree on the axis direction of other subregion when double-shaft tilt angle sensor, then the basic electric block in the subregion at respective axis place and adjustment electric block out of service; After whole electric block is out of service, judge whether any one normal opened contact in 4 or 8 weight hammer type limit switches closes by described PLC, appoint in normal opened contact and have one closedly then to terminate jacking process, then restart jacking process as neither one in normal opened contact is closed.
10. the control system of electric block automatic lifting cell body according to claim 9, it is characterized in that wherein when described PLC any one normal opened contact monitored in all weight hammer type limit switches closes, described PLC exceedes setting limit θ by the angu-lar deviation θ of cell body
2Stime dynamic stop adjustment mode carry out dynamic conditioning shutdown; And any one normally closed contact in all weight hammer type limit switches is when disconnecting, described 4 subregions or the corresponding electric block loop of 8 subregions disconnect, electric block in respective partition is out of service, until the normally closed contact of all weight hammer type limit switches disconnects, the electric block in respective partition is out of service.
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| CN201410409633.8A CN104261290B (en) | 2014-08-19 | 2014-08-19 | Control system for automatic jacking tank of electric hoists |
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|---|---|---|---|
| CN201410409633.8A CN104261290B (en) | 2014-08-19 | 2014-08-19 | Control system for automatic jacking tank of electric hoists |
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| CN104261290B CN104261290B (en) | 2017-01-25 |
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Cited By (1)
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| CN104261290B (en) | 2017-01-25 |
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