CN112031379A - Intelligent control method for stepping type bolt lifting of tower lifting platform - Google Patents
Intelligent control method for stepping type bolt lifting of tower lifting platform Download PDFInfo
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- CN112031379A CN112031379A CN202010730387.1A CN202010730387A CN112031379A CN 112031379 A CN112031379 A CN 112031379A CN 202010730387 A CN202010730387 A CN 202010730387A CN 112031379 A CN112031379 A CN 112031379A
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- oil cylinder
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/18—Scaffolds primarily resting on the ground adjustable in height
- E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G2005/008—Hoisting devices specially adapted as part of a scaffold system
Abstract
The invention discloses an intelligent control method for stepping type bolt lifting of a tower lifting platform, belonging to the technical field of lifting platforms, wherein an intelligent control device based on the method comprises the following steps: the control module, and an operation display module, a detection module and an output valve group which are connected with the control module; the method can realize automatic pin feeding and pin withdrawing of the stepping type bolt tower lifting platform, can effectively adapt to the development of an automatic technology, and is low in labor intensity.
Description
Technical Field
The invention relates to the technical field of lifting platforms, in particular to an intelligent control method for stepping type bolt lifting of a tower lifting platform.
Background
Bolt lift platform is a common lift platform, and among the prior art, the pylon mostly is the hydraulic pump and provides lift cylinder power, and the cooperation is artifical advances the round pin, moves back the round pin and realize lift platform's lift.
As shown in fig. 1, in the prior art, the manual lifting process of the lifting platform includes the following steps:
the first step is as follows: manually pulling out the upper inserted pin assembly (comprising a left upper inserted pin 2 and a right upper inserted pin 5) from the corresponding pin hole 1;
the second step is that: the piston ends of the left lifting oil cylinder 3 and the right lifting oil cylinder 6 are extended upwards by the power provided by the manual hydraulic pump (at this time, because of the action of the lower bolt component, namely the left lower bolt 4 and the right lower bolt 7 are still in the insertion state, the upper bolt component moves upwards along with the left piston rod connecting mechanism 31 of the left lifting oil cylinder 3 and the right piston rod connecting mechanism 32 of the right lifting oil cylinder 6);
the third step: after the piston ends of the left lifting oil cylinder 3 and the right lifting oil cylinder 6 move upwards to reach the maximum stroke, manually inserting the upper plug pin assembly into the corresponding pin hole 1, and simultaneously pulling the lower plug pin assembly out of the corresponding pin hole 1;
the fourth step: the piston ends of the left lifting cylinder 3 and the right lifting cylinder 6 are retracted towards the cylinder body end by the power provided by the manual hydraulic pump (at this time, because the upper bolt component is in an inserting state, the lower bolt component moves upwards together with the left piston rod connecting mechanism 31, the right piston rod connecting mechanism 32 and the platform plate 8).
Therefore, the stepping type bolt tower lifting platform in the prior art needs to manually pull out the bolt, and is high in labor intensity and low in efficiency. The lifting oil cylinder needs a hand-operated hydraulic pump, physical energy consumption of operators is high, and lifting speed is low. In a word, the stepping type bolt tower lifting platform in the prior art is old and backward in technology, cannot adapt to the lifting of the automation technology level, and cannot meet the innovation and development of the current tower technology. Therefore, how to provide a control method for a tower lifting platform which has low labor intensity and can realize automatic pin feeding and pin withdrawing is a problem to be solved at present.
Disclosure of Invention
In view of the above, the invention provides an intelligent control method for stepping type bolt lifting of a tower lifting platform, which can realize automatic bolt feeding and bolt withdrawing of the stepping type bolt tower lifting platform.
The technical scheme of the invention is as follows: an intelligent control method for stepping type bolt lifting of a tower lifting platform comprises the following steps:
the first step is as follows: when the tower lifting platform stops at any position, the control module judges the insertion states of the upper bolt and the lower bolt and the extension amount of the lifting oil cylinder, and ensures that the upper bolt and the lower bolt are both in the insertion states;
the second step is that: when a lifting button on the operation panel is pressed, the control module receives a lifting signal and judges the current extension x of the lifting oil cylinder;
if x is M1, the bolt is stressed at the moment; wherein, M1 is the distance between the pinhole that the lower bolt was inserted and the last bolt, the value range of M1 is 0.5M + (k-1) (M + n) < M1< M + (k-1) (M + n), the pinhole is kidney-shaped hole, M is the length of pinhole major axis, n is the distance between the adjacent pinholes, k is the pinhole number, k 1 is the first pinhole from top to bottom of lower part, the upper end of first pinhole is the position that the lower bolt was inserted when the piston end of lift cylinder was fully retracted relative to the cylinder end, the second pinhole and other pinholes arrange downwards in proper order;
if the M1 does not have a value corresponding to the lower end pin hole, the control module controls the lifting oil cylinder to extend to the corresponding M2; the lower plug pin is in an inserted and stressed state, and the upper plug pin can be directly pulled out; if M1 is the value corresponding to the pin hole at the lower end, turning to the fifth step;
if x is M2, the lower plug pin is stressed at the moment; wherein M2 is the distance between the pinhole that the upper bolt was inserted and the lower bolt, the range of taking value of M2 is km + (k-1) n < M2< (k +0.5) M + (k-1) n, k equals 1 and is the first pinhole from top to bottom, the lower extreme of first pinhole is the position that the upper bolt was inserted when the cylinder body end of lift cylinder was totally retracted relative to the piston end, second pinhole and other pinholes were arranged upwards in proper order;
if the M2 does not have a value corresponding to the pin hole at the top end of the upper part, the upper plug pin can be directly pulled out; if M2 is the value corresponding to the pin hole at the top end of the upper part, turning to the third step;
the third step: after the upper bolt is withdrawn in place, the control module controls the lifting oil cylinder to extend until M2 corresponding to the pin hole at the top end of the upper part stops;
the fourth step: the control module controls the upper plug pin to be inserted into the corresponding pin hole;
the fifth step: after the upper bolt enters the pin in place, the lifting oil cylinder recovers M1 corresponding to the pin hole at the tail end of the lower part, and the control module controls the lower bolt to retreat;
and a sixth step: after the lower bolt is inserted in place, the lifting oil cylinder recovers the set value, and the tower lifting platform rises along with the set value;
the seventh step: when a descending button on the operation panel is pressed, the control module receives a descending signal and judges the current extension x of the lifting oil cylinder;
if x is M1, the upper bolt is stressed at the moment, and the eighth step is carried out;
eighth step: if the M1 does not have the value corresponding to the pin hole at the top end of the lower part, the control module controls the lifting oil cylinder to extend to the corresponding M2; the lower plug pin is in an inserted and stressed state, and the upper plug pin can be directly pulled out;
the ninth step: after the upper bolt is withdrawn in place, the control module controls the lifting oil cylinder to withdraw until M2 corresponding to the pin hole at the top end of the upper part stops, and the upper bolt is inserted;
the tenth step: after the upper bolt is inserted in place, the lifting oil cylinder is recovered to M1 corresponding to the pin hole at the top end of the lower part and stops; at the moment, the upper bolt is stressed, and the lower bolt can be directly pulled out;
the eleventh step: after the lower latch pin is withdrawn to the position, the lifting oil cylinder extends out of a set value, and the tower lifting platform descends accordingly.
Preferably, when the upper bolt is in the inserting state and the lower bolt is in the withdrawing state, the control module compares the extension amount x of the lift cylinder with M1;
if x is larger than or equal to M1, stopping when the cylinder body end of the lifting oil cylinder moves to M1, and coinciding the situation that x is smaller than M1 corresponding to the situation that the lower bolt is stressed, and after the lifting oil cylinder stops, controlling the lower bolt to be inserted into the corresponding pin hole by the control module to achieve that the upper bolt and the lower bolt are both in an inserted state;
when the upper bolt is in a withdrawing state and the lower bolt is in an inserting state, the control module compares the extension amount x of the lifting oil cylinder with M2;
if x is larger than M2, the cylinder body end of the lifting oil cylinder stops when moving to M2, the situation that x is smaller than or equal to M2 corresponds to the situation that the upper bolt is stressed is overlapped, and after the lifting oil cylinder stops, the control module controls the upper bolt to be inserted into the corresponding pin hole, so that the upper bolt and the lower bolt are both in an inserted state.
Preferably, the third step detects that the upper latch is in place by the upper left proximity switch group and the upper right proximity switch group.
Preferably, in the fifth step, the upper bolt is detected to be inserted into the position through the upper left proximity switch group and the upper right proximity switch group.
Preferably, the sixth step detects that the lower plug pin is withdrawn to the right through the left lower proximity switch group and the right lower proximity switch group.
Preferably, the ninth step detects that the upper bolt is in the position of being withdrawn from the pin by the upper left proximity switch group and the upper right proximity switch group.
Preferably, in the tenth step, the upper bolt is detected to be inserted into the position through the upper left proximity switch group and the upper right proximity switch group.
Preferably, the tenth step detects that the lower latch pin is withdrawn to the right through the lower left proximity switch group and the lower right proximity switch group.
Has the advantages that:
the intelligent control method can realize automatic pin feeding and pin withdrawing of the stepping type bolt tower lifting platform, can effectively adapt to the development of an automation technology, and is low in labor intensity.
Drawings
Fig. 1 is a schematic structural diagram of a latch type lifting platform in the prior art.
Fig. 2 is a schematic diagram of the control of the lifting of the pin type lifting platform when the upper pin is stressed.
Fig. 3 is a schematic diagram of the control of the lifting of the pin type lifting platform when the lower pin is stressed.
The lifting mechanism comprises 1-pin hole, 2-upper left bolt, 3-left lifting cylinder, 31-left piston rod connecting mechanism, 32-right piston rod connecting mechanism, 33-left lifting cylinder base, 34-right lifting cylinder base, 4-lower left bolt, 5-upper right bolt, 6-right lifting cylinder, 7-lower right bolt and 8-platform plate.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides an intelligent control method for stepping type bolt lifting of a tower lifting platform, which can realize automatic bolt feeding and pin withdrawing of the stepping type bolt tower lifting platform.
The intelligent control method is used for controlling a stepping bolt tower lifting platform to carry out stepping bolt advancing or bolt retreating so as to realize the lifting of the lifting platform, and the intelligent control device based on the stepping bolt tower lifting platform comprises the following steps: the control module, and an operation display module, a detection module and an output valve group which are connected with the control module;
the manipulation display module includes: the control panel, and an ascending button, a descending button and a display screen which are arranged on the operation panel;
the detection module includes: the displacement detection module and the pin shaft detection module; the displacement detection module includes: the two absolute type stay wire displacement sensors are respectively a left side displacement sensor and a right side displacement sensor, are respectively and correspondingly arranged on the left lifting oil cylinder 3 and the right lifting oil cylinder 6 and are used for detecting the strokes of the left lifting oil cylinder 3 and the right lifting oil cylinder 6; the pin detection module includes: the upper left proximity switch group, the upper right proximity switch group, the lower left proximity switch group and the lower right proximity switch group are respectively and correspondingly arranged around the upper left bolt 2, the upper right bolt 5, the lower left bolt 4 and the lower right bolt 7, each group of proximity switches consists of two proximity switches, are respectively positioned on the front side and the back side of the guide rail of the tower lifting platform (namely the two proximity switches in each group of proximity switches correspond to the two axial ends of the corresponding bolts), and are respectively used for detecting the bolt in-place and the bolt out-of-place of the bolts;
the control module is composed of a programmable controller and is used for logical operation, so that intelligent control is realized;
the output valve group includes: three two-way proportional valves, namely a lifting oil cylinder control valve, an upper bolt oil cylinder control valve and a lower bolt oil cylinder control valve (the lifting oil cylinder control valve simultaneously controls the left lifting oil cylinder 3 and the right lifting oil cylinder 6 to move, the upper bolt control valve controls the upper bolt oil cylinder to move so as to simultaneously control the left upper bolt 2 and the right upper bolt 5 to move, and the lower bolt control valve controls the lower bolt oil cylinder to move so as to simultaneously control the left lower bolt 4 and the right lower bolt 7);
the control display module, the control module and the output valve group can be arranged at any position near the stepping bolt tower lifting platform and are respectively connected with the stepping bolt tower lifting platform;
the intelligent control method comprises the following steps:
the first step is as follows: when a lifting button or a descending button on the control panel is released, the control module receives a stop signal, and at the moment, the control module judges the insertion state of an upper bolt (a left upper bolt 2 and a right upper bolt 5) and a lower bolt (a left lower bolt 4 and a right lower bolt 7) and the extension amount of the lifting oil cylinder;
as shown in fig. 2, the left upper bolt 2 and the right upper bolt 5 are controlled by the same upper bolt cylinder, so the movement is synchronous, and similarly, the left lower bolt 4 and the right lower bolt 7 are also controlled by the same lower bolt cylinder, so the overall control method is illustrated;
when the upper bolt is in an inserting state (namely the upper left bolt 2 and the upper right bolt 5 are both in a stressed state) and the lower bolt (the lower left bolt 4 and the lower right bolt 7) is in an exiting state, the extension amount of the lifting oil cylinder detected by the displacement sensors (the left displacement sensor and the right displacement sensor) is x, the control module compares x with M1, and in order to avoid mutual interference with the lower bolt when stressed, the value range of M1 is 0.5M + (k-1) (M + n) < M1< M + (k-1) (M + n);
wherein, M1 is the distance between the pin hole 1 into which the lower plug pin is to be inserted and the upper plug pin, the pin hole 1 is a kidney-shaped hole, M is the length of the major axis of the pin hole 1, n is the distance between adjacent pin holes 1, k is the number of the pin holes, k is 1 which is the first pin hole 1 from top to bottom on the lower part, the upper end of the first pin hole 1 defaults to the position where the lower plug pin is inserted when the piston end of the lift cylinder is completely retracted relative to the cylinder end, at this time, M1 is 0, and the second pin hole 1 and the other pin holes 1 are sequentially arranged downwards;
taking the example of three pin holes 1 in the lower part, if x is greater than or equal to M11Then the cylinder end of the lift cylinder moves to M11X is less than M11The corresponding situation is superposed with the lower bolt when stressed, wherein, the distance is 0.5m<M11<m; if x is greater than or equal to M12Then the cylinder end of the lift cylinder moves to M12X is less than M12The corresponding situation is superposed with the lower bolt when being stressed, wherein, 1.5m + n<M12<2m + n; if x is greater than or equal to M13Then the cylinder end of the lift cylinder moves to M13X is less than M13The corresponding situation is superposed with the lower bolt when being stressed, wherein, 2.5m +2n<M13<3m +2 n; after the lifting oil cylinder stops, the control module controls the lower inserted pins to be inserted into the corresponding pin holes 1, and the four inserted pins are in an inserted safety state;
as shown in fig. 3, when the upper plug is in the withdrawing state and the lower plug is in the inserting state, the extending amount of the lift cylinder is x, the control module compares x with M2, and in order to avoid mutual interference with the upper plug when stressed, the value range of M2 is km + (k-1) n < M2< (k +0.5) M + (k-1) n;
wherein, M2 is the distance between the pin hole 1 into which the upper pin is to be inserted and the lower pin, the pin hole 1 is a kidney-shaped hole, M is the length of the major axis of the pin hole 1, n is the distance between adjacent pin holes 1, k is the number of the pin holes, k is 1 is the first pin hole 1 from the bottom to the top, the lower end of the first pin hole 1 defaults to the position where the upper pin is inserted when the cylinder body end of the lift cylinder is completely retracted relative to the piston end, at this time, M2 is M, and the second pin hole 1 and the other pin holes 1 are sequentially arranged upwards;
taking the example of three pin holes 1 in the upper part, if x is larger than M21Then the cylinder end of the lift cylinder moves to M21X is less than or equal to M21The corresponding condition is coincident with the stress of the upper bolt, wherein m<M21<1.5 m; if x is greater than M22Then the cylinder end of the lift cylinder moves to M22X is less than or equal to M22The corresponding situation is superposed with the upper bolt when being stressed, wherein, 2m + n<M22<2.5m + n; if x is greater than M23Then the cylinder end of the lift cylinder moves to M23X is less than or equal to M23The corresponding situation is heavy when the upper bolt is stressedWherein, 3m +2n<M13<3.5m +2 n; after the lifting oil cylinder stops, the control module controls the upper bolts to be inserted into the corresponding pin holes 1, and the four bolts are in an inserted safe state;
the second step is that: when a lifting button on the operation panel is pressed, the control module receives a lifting signal, and because the four bolts are in an inserted safe state when the lifting button is stopped, the control module receives a signal of the displacement sensor and judges the current extension x of the lifting oil cylinder;
if M11、M12And M13Any one of the two bolts indicates that the upper bolt is stressed at the moment, namely the weight of the tower lifting platform is supported by the upper bolt;
if x is M11Then the control module controls the lift cylinder to extend to M21(ii) a If x is M12Then the control module controls the lift cylinder to extend to M22(ii) a The lower plug pin is in a plugged and stressed state, and the upper plug pin can be directly pulled out (because the upper plug pin is stressed and the lower plug pin is suspended, if the upper plug pin is directly pulled out, danger is easily caused); if x is M13Turning to the fifth step;
if M21、M22And M23Any one of the lower bolts is stressed at the moment, namely the weight of the tower lifting platform is supported by the lower bolts;
if x is M21、M22The upper plug pin can be directly pulled out; if x is M23And going to the third step;
the third step: when the upper left proximity switch group and the upper right proximity switch group detect that the upper bolt is withdrawn and the pin is in place, the control module controls the lifting oil cylinder to extend until x is M23Stop (let M23The maximum stroke of the lifting oil cylinder is set, so that the lifting oil cylinder can reach the maximum stroke in each period, and accumulated errors in the movement process of the lifting oil cylinder are eliminated);
the fourth step: the control module controls the upper inserted pin to be inserted into the corresponding pin hole 1;
the fifth step: after the upper left proximity switch group and the upper right proximity switch group detect that the upper bolt is inserted in place, the oil is liftedCylinder recovery to x-M13The control module controls the lower plug pin to withdraw;
and a sixth step: when the left lower approach switch group and the right lower approach switch group detect that the lower bolt is inserted in place, the lifting oil cylinder recovers a set value, and the tower lifting platform rises along with the set value;
the seventh step: when a descending button on the operation panel is pressed, the control module receives a descending signal, and because the four bolts are in an inserted safety state when the operation panel stops, the control module receives a signal of the displacement sensor and judges the current extension x of the lifting oil cylinder;
if M11、M12And M13Any one of the two bolts indicates that the upper bolt is stressed at the moment, namely the weight of the tower lifting platform is supported by the upper bolt;
eighth step: if x is M12Then the control module controls the lift cylinder to extend to M22(ii) a If x is M13Then the control module controls the lift cylinder to extend to M23(ii) a The lower plug pin is in a plugged and stressed state, and the upper plug pin can be directly pulled out (because the upper plug pin is stressed and the lower plug pin is suspended, if the upper plug pin is directly pulled out, danger is easily caused);
the ninth step: when the upper left proximity switch group and the upper right proximity switch group detect that the upper bolt is withdrawn in place, the control module controls the lifting oil cylinder to withdraw until x is M21Stopping and inserting an upper plug;
the tenth step: when the upper left proximity switch group and the upper right proximity switch group detect that the upper bolt is inserted in place, the lifting oil cylinder is recovered to x which is M11(ii) a At the moment, the upper bolt is stressed, and the lower bolt can be directly pulled out;
the eleventh step: when the left lower approach switch group and the right lower approach switch group detect that the lower bolt is withdrawn to the position, the lifting oil cylinder extends out of a set value, and the tower lifting platform descends accordingly.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An intelligent control method for stepping type bolt lifting of a tower lifting platform is characterized by comprising the following steps:
the first step is as follows: when the tower lifting platform stops at any position, the control module judges the insertion states of the upper bolt and the lower bolt and the extension amount of the lifting oil cylinder, and ensures that the upper bolt and the lower bolt are both in the insertion states;
the second step is that: when a lifting button on the operation panel is pressed, the control module receives a lifting signal and judges the current extension x of the lifting oil cylinder;
if x is M1, the bolt is stressed at the moment; wherein, M1 is the distance between the pinhole that the lower bolt was inserted and the last bolt, the value range of M1 is 0.5M + (k-1) (M + n) < M1< M + (k-1) (M + n), the pinhole is kidney-shaped hole, M is the length of pinhole major axis, n is the distance between the adjacent pinholes, k is the pinhole number, k 1 is the first pinhole from top to bottom of lower part, the upper end of first pinhole is the position that the lower bolt was inserted when the piston end of lift cylinder was fully retracted relative to the cylinder end, the second pinhole and other pinholes arrange downwards in proper order;
if the M1 does not have a value corresponding to the lower end pin hole, the control module controls the lifting oil cylinder to extend to the corresponding M2; the lower plug pin is in an inserted and stressed state, and the upper plug pin can be directly pulled out; if M1 is the value corresponding to the pin hole at the lower end, turning to the fifth step;
if x is M2, the lower plug pin is stressed at the moment; wherein M2 is the distance between the pinhole that the upper bolt was inserted and the lower bolt, the range of taking value of M2 is km + (k-1) n < M2< (k +0.5) M + (k-1) n, k equals 1 and is the first pinhole from top to bottom, the lower extreme of first pinhole is the position that the upper bolt was inserted when the cylinder body end of lift cylinder was totally retracted relative to the piston end, second pinhole and other pinholes were arranged upwards in proper order;
if the M2 does not have a value corresponding to the pin hole at the top end of the upper part, the upper plug pin can be directly pulled out; if M2 is the value corresponding to the pin hole at the top end of the upper part, turning to the third step;
the third step: after the upper bolt is withdrawn in place, the control module controls the lifting oil cylinder to extend until M2 corresponding to the pin hole at the top end of the upper part stops;
the fourth step: the control module controls the upper plug pin to be inserted into the corresponding pin hole;
the fifth step: after the upper bolt enters the pin in place, the lifting oil cylinder recovers M1 corresponding to the pin hole at the tail end of the lower part, and the control module controls the lower bolt to retreat;
and a sixth step: after the lower bolt is inserted in place, the lifting oil cylinder recovers the set value, and the tower lifting platform rises along with the set value;
the seventh step: when a descending button on the operation panel is pressed, the control module receives a descending signal and judges the current extension x of the lifting oil cylinder;
if x is M1, the upper bolt is stressed at the moment, and the eighth step is carried out;
eighth step: if the M1 does not have the value corresponding to the pin hole at the top end of the lower part, the control module controls the lifting oil cylinder to extend to the corresponding M2; the lower plug pin is in an inserted and stressed state, and the upper plug pin can be directly pulled out;
the ninth step: after the upper bolt is withdrawn in place, the control module controls the lifting oil cylinder to withdraw until M2 corresponding to the pin hole at the top end of the upper part stops, and the upper bolt is inserted;
the tenth step: after the upper bolt is inserted in place, the lifting oil cylinder is recovered to M1 corresponding to the pin hole at the top end of the lower part and stops; at the moment, the upper bolt is stressed, and the lower bolt can be directly pulled out;
the eleventh step: after the lower latch pin is withdrawn to the position, the lifting oil cylinder extends out of a set value, and the tower lifting platform descends accordingly.
2. The intelligent control method for stepping bolt lifting of tower lifting platform according to claim 1, wherein when the upper bolt is in the inserting state and the lower bolt is in the withdrawing state, the control module compares the extension amount x of the lifting cylinder with M1;
if x is larger than or equal to M1, stopping when the cylinder body end of the lifting oil cylinder moves to M1, and coinciding the situation that x is smaller than M1 corresponding to the situation that the lower bolt is stressed, and after the lifting oil cylinder stops, controlling the lower bolt to be inserted into the corresponding pin hole by the control module to achieve that the upper bolt and the lower bolt are both in an inserted state;
when the upper bolt is in a withdrawing state and the lower bolt is in an inserting state, the control module compares the extension amount x of the lifting oil cylinder with M2;
if x is larger than M2, the cylinder body end of the lifting oil cylinder stops when moving to M2, the situation that x is smaller than or equal to M2 corresponds to the situation that the upper bolt is stressed is overlapped, and after the lifting oil cylinder stops, the control module controls the upper bolt to be inserted into the corresponding pin hole, so that the upper bolt and the lower bolt are both in an inserted state.
3. An intelligent control method for stepped plug lifting of a tower lifting platform according to claim 1, wherein in the third step the upper plug pin is detected to be out of position by the upper left proximity switch group and the upper right proximity switch group.
4. The intelligent control method for stepping bolt lifting of a tower lifting platform as claimed in claim 1, wherein in the fifth step, the bolt is detected to be inserted in place by an upper left proximity switch group and an upper right proximity switch group.
5. The intelligent control method for stepping plug pin lifting of tower lifting platform according to claim 1, wherein in the sixth step, the lower plug pin is detected to be out of position by the lower left proximity switch group and the lower right proximity switch group.
6. The intelligent control method for stepping bolt lifting of tower lifting platform according to claim 1, wherein in the ninth step, the upper bolt is detected to be out of position by the upper left proximity switch group and the upper right proximity switch group.
7. The intelligent control method for stepping bolt lifting of tower lifting platform according to claim 1, wherein in the tenth step, the bolt is detected to be inserted in place by the upper left proximity switch group and the upper right proximity switch group.
8. The intelligent control method for stepping plug pin lifting of tower lifting platform according to claim 1, wherein in the tenth step, the lower plug pin is detected to be out of position by the lower left proximity switch group and the lower right proximity switch group.
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