CN211846965U - Wireless portable screw rod jacking system - Google Patents
Wireless portable screw rod jacking system Download PDFInfo
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- CN211846965U CN211846965U CN201922367046.8U CN201922367046U CN211846965U CN 211846965 U CN211846965 U CN 211846965U CN 201922367046 U CN201922367046 U CN 201922367046U CN 211846965 U CN211846965 U CN 211846965U
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Abstract
The utility model relates to a device field for promote load in succession specifically is a wireless portable lead screw jacking system. The utility model provides a wireless portable lead screw jacking system, includes climbing mechanism (1), characterized by: the self-adaptive lifting device comprises a self-adaptive telescopic unit (2), a control unit (3), a displacement sensor (41), a force measuring sensor (42) and a power supply (5), wherein the lifting mechanism (1) comprises a lifting screw rod (11) and a lifting platform (12); the control unit (3) comprises a main control module (31), a wireless transmission module (32), a data acquisition module (33) and a power switch (34). The utility model discloses lay the convenience, convenient light and handy, control is accurate.
Description
Technical Field
The utility model relates to a device field for promote load in succession specifically is a wireless portable lead screw jacking system.
Background
In the new construction and reconstruction construction of civil engineering, some structural components are often required to be jacked or pushed, and jacking or pushing operation is widely required in the fields of large buildings, bridges, subways and the like, so that a proper jacking device is required to be selected for construction. The existing jacking device mostly adopts a large-scale hydraulic system, and can meet the requirements of large-tonnage jacking or jacking work. However, for some small tonnage applications, the large hydraulic system has a complex structure, a large volume and low efficiency, and needs a complex wiring system for power supply and data transmission, and these complex cable systems are easily damaged at a construction site, thereby causing the failure of the whole jacking system.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's defect, provide one kind and lay convenience, convenient light and handy, the accurate jacking scheme of control, satisfy the small-tonnage jacking of civil engineering or push away and use, the utility model discloses a wireless portable lead screw jacking system.
The utility model discloses a following technical scheme reaches the invention purpose:
the utility model provides a wireless portable lead screw jacking system, includes climbing mechanism, characterized by: also comprises a self-adaptive telescopic unit, a control unit, a displacement sensor, a force measuring sensor and a power supply,
the jacking mechanism comprises a jacking screw rod and a jacking platform, and the jacking platform is fixed at the top end of the jacking screw rod; the self-adaptive telescopic unit comprises a motor, a fixed support and a transmission mechanism, wherein the motor is fixed on the fixed support, an output shaft of the motor is connected with a jacking lead screw through the transmission mechanism, and the transmission mechanism converts the rotation of the output shaft of the motor into the translation of the jacking lead screw in the vertical direction;
the control unit comprises a main control module, a wireless transmission module, a data acquisition module and a power switch, wherein the main control module is respectively connected with the wireless transmission module and the data acquisition module through signal lines, and is also connected with the motor through a signal line connected with the power switch in series;
the jacking platform is provided with a displacement sensor and a force measuring sensor, and the displacement sensor and the force measuring sensor are connected with the data acquisition module through signal lines;
the power supply is respectively connected with the jacking mechanism, the self-adaptive telescopic unit and the control unit through leads.
Wireless portable lead screw jacking system, characterized by:
the motor is a variable frequency motor;
the transmission mechanism is selected according to the following steps:
firstly, when the central axes of an output shaft of a motor and a jacking screw rod coincide with each other, a screw rod-nut assembly is selected;
when the central axes of the output shaft of the motor and the jacking screw rod are parallel to each other, a parallel gear set is selected;
when the central axes of the output shaft of the motor and the jacking screw rod are mutually vertical, a bevel gear set or a worm gear-worm set is selected;
the power supply adopts a storage battery.
The use method of the wireless portable screw rod jacking system is characterized by comprising the following steps: the method is implemented in sequence according to the following steps:
a. installation: each wireless portable screw rod jacking system is arranged below a structural component needing jacking, so that each jacking platform is tightly connected with the structural component;
b. and (3) value input: each wireless portable screw rod jacking system is wirelessly connected with a master control computer of a jacking operation site through a respective wireless transmission module, and a jacking control value or a control sequence is input into the master control computer;
c. starting: the wireless portable screw jacking system comprises a main control computer, a power switch, a power supply and a self-adaptive telescopic unit, wherein the main control computer sends a jacking starting instruction and a jacking control value to a main control module of each wireless portable screw jacking system, the main control computer records the initial displacement of each wireless portable screw jacking system at the moment, the main control module converts the jacking control value into the rotating speed of a motor after receiving the jacking starting instruction, the power switch is closed, the power supply supplies power to the motor, and the motor runs according to the rotating speed converted from the jacking control value under the control of the main control module so as to control the work of the self-;
d. jacking: the transmission mechanism converts the rotation of the motor output shaft into the translation of the jacking screw rod in the vertical direction, and the jacking screw rod jacks the structural component through the jacking platform to enable the structural component to generate lifting displacement;
e. collecting: the main control module controls the displacement sensor and the force measuring sensor to sample displacement data and force measuring data according to a set frequency, the data acquisition module collects the displacement data and the pressure data and inputs the collected data and the pressure data into the main control module, and the main control module uploads the displacement data and the pressure data to the main control computer and the cloud end through the wireless transmission module;
f. controlling: the main control module analyzes the displacement data and the pressure data in real time, calculates the jacking displacement change value of the structural member through an embedded software program, and controls the rotating speed of the variable frequency motor by utilizing a program algorithm based on the displacement rate, so that the self-adaptive telescopic unit is accurately controlled to carry out jacking work, and the main control module analyzes the rotating speed of the motor in real time and corrects the rotating speed of the motor in real time;
g. stopping the machine: and when the jacking displacement of the structural member is close to the control value, the main control module controls the motor to slowly stop.
The utility model discloses a variable frequency motor drive self-adaptation drive unit carries out the jacking and pushes away the action to the adoption carries out accurate control to the displacement of structure based on the frequency conversion control method of PID theory, the utility model discloses a battery powered to have wireless transmission data's function, need not to add power supply and signal line in addition at the job site. Particularly, the utility model discloses following beneficial effect has:
1. the variable frequency motor controls the transmission unit to form a self-adaptive telescopic system:
the utility model discloses a frequency conversion control method based on PID theory controls the flexible unit of self-adaptation to drive the jacking or the top of lead screw completion superstructure and push away the action, the unlimited level and smooth approach control value of the expansion value of lead screw can not take place the phenomenon of overshooting.
The utility model discloses still add the flexible volume of having established displacement sensor and being used for the real-time measurement lead screw in addition, add and establish force cell and be used for measuring the pressure of superstructure to the platform, as the safety redundancy that the system checked.
Compare with hydraulic system driven mode, the utility model discloses it is convenient more light and handy to can control the displacement of structure more accurately.
2. The power supply is carried out by a battery:
the utility model discloses a from taking battery powered, a whole set of jacking device need not to lay the power supply cable in addition, can improve the convenience of site operation.
3. Data wireless transmission:
the utility model discloses a data transmission passes through wireless communication technologies such as loRa, realizes on-the-spot wireless ad hoc network control to by on-the-spot master control computer, carry out independent control to every jacking system, promote data transmission's reliability by a wide margin.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of a middle jacking mechanism and an adaptive telescopic unit of the present invention;
fig. 3 is a schematic connection diagram of the control unit of the present invention;
fig. 4 is a schematic diagram of the program algorithm based on displacement rate in use of the present invention.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The utility model provides a wireless portable lead screw jacking system, includes climbing mechanism 1, self-adaptation telescoping unit 2, the control unit 3, displacement sensor 41, force cell 42 and power 5, as shown in fig. 1-3, concrete structure is:
the jacking mechanism 1 comprises a jacking screw rod 11 and a jacking platform 12, and the jacking platform 12 is fixed at the top end of the jacking screw rod 11; the self-adaptive telescopic unit 2 comprises a motor 21, a fixed support 22 and a transmission mechanism 23, wherein the motor 21 is fixed on the fixed support 22, an output shaft of the motor 21 is connected with the jacking screw rod 11 through the transmission mechanism 23, and the transmission mechanism 23 converts the rotation of the output shaft of the motor 21 into the translation of the jacking screw rod 11 in the vertical direction;
the control unit 3 comprises a main control module 31, a wireless transmission module 32, a data acquisition module 33 and a power switch 34, wherein the main control module 31 is respectively connected with the wireless transmission module 32 and the data acquisition module 33 through signal lines, and the main control module 31 is also connected with the motor 21 through a signal line which is connected with the power switch 34 in series;
the jacking platform 12 is provided with a displacement sensor 41 and a force measuring sensor 42, and the displacement sensor 41 and the force measuring sensor 42 are both connected with the data acquisition module 33 through signal lines;
the power supply 5 is respectively connected with the jacking mechanism 1, the self-adaptive telescopic unit 2 and the control unit 3 through leads.
In this embodiment:
the motor 21 is a variable frequency motor;
the transmission mechanism 23 is selected as follows:
firstly, when the central axes of the output shaft of the motor 21 and the jacking screw rod 11 are coincident with each other, a screw rod-nut assembly is selected;
when the central axes of the output shaft of the motor 21 and the jacking screw rod 11 are parallel to each other, a parallel gear set is selected;
thirdly, when the central axes of the output shaft of the motor 21 and the jacking screw rod 11 are mutually vertical, a bevel gear set or a worm gear-worm set is selected;
the power supply 5 adopts a storage battery.
When the method is used, the steps are implemented in sequence as follows:
a. installation: each wireless portable screw rod jacking system is arranged below a structural component needing jacking, so that each jacking platform 12 is tightly connected with the structural component;
b. and (3) value input: each wireless portable screw rod jacking system is wirelessly connected with a main control computer of a jacking operation site through a respective wireless transmission module 32, and a jacking control value or a control sequence is input into the main control computer;
c. starting: the main control computer sends a jacking starting instruction and a jacking control value to the main control module 31 of each wireless portable screw jacking system, the main control computer records the initial displacement of each wireless portable screw jacking system at the moment, after receiving the jacking starting instruction, the main control module 31 converts the jacking control value into the rotating speed of the motor 21 and closes the power switch 34, the power supply 5 supplies power to the motor 21, and the motor 21 operates according to the rotating speed converted from the jacking control value under the control of the main control module 31 so as to control the work of the self-adaptive telescopic unit 2;
d. jacking: the transmission mechanism 23 converts the rotation of the output shaft of the motor 21 into the translation of the jacking screw rod 11 in the vertical direction, and the jacking screw rod 11 jacks the structural member through the jacking platform 12 to enable the structural member to generate lifting displacement;
e. collecting: the main control module 31 controls the displacement sensor 41 and the force measuring sensor 42 to sample displacement data and force measuring data according to a set frequency, the data acquisition module 33 collects the displacement data and the pressure data and inputs the collected data into the main control module 31, and the main control module 31 uploads the displacement data and the pressure data to the main control computer and the cloud end through the wireless transmission module 32;
f. controlling: the main control module 31 analyzes the displacement data and the pressure data in real time, calculates the jacking displacement change value of the structural member through an embedded software program, and controls the rotating speed of the variable frequency motor by using a program algorithm based on the displacement rate, so that the self-adaptive telescopic unit 2 is accurately controlled to carry out jacking work, and the main control module 31 analyzes the rotating speed of the timely correction motor 21 in real time;
the program algorithm based on displacement rate is as follows:
setting: t is t0-a start time of the start-up time,
tp-for calculating the start time of the load rate period,
tc-for calculating the end time of the load rate period,
t1-the end time of the control phase 1,
t2-the end time of the control phase 2,
t3-the end time of the control phase 3,
units sec of t above;
d is the actual displacement value at any moment,
Dt-preset purposeThe value of the index shift is set to be,
D0-a displacement value at the starting moment,
Dp—tpthe value of the displacement at the moment of time,
Dc—tcthe value of the displacement at the moment of time,
D1control phase 1, t0～t1The value of the displacement at the end of the phase,
D2control stage 2, i.e. t1～t2The value of the displacement at the end of the phase,
D3control stage 3, i.e. t2～t3The value of the displacement at the end of the phase,
unit mm of D above;
load rate period-T = Tc-tpThe unit of the number of seconds,
loading rate-Vp=Dc-DpThe unit of the thickness of the film is mm,
△P=(Dt-D) being the difference between the target value and the current value,
△P1=(Dt-D1)，
△P2=(Dt-D2)，
△P3 =(Dt-D3)，
in units of Δ P above;
as shown in fig. 4, the loading rate is selected differently according to the magnitude of the difference between the control target value and the actual value. When the difference between the actual value and the target value is larger, the loading is carried out at a larger loading rate so as to obtain higher efficiency; when the difference between the actual value and the target displacement value is smaller, the actual value is loaded at a smaller loading rate, and the actual value slowly approaches to the target value, so that higher control precision is obtained; when the actual value is equal to the target value, stopping the machine, the loading rate is zero, the loading process is finished, and table 1 is an example of a control parameter:
table 1:
the control method based on the displacement rate has the characteristics of higher efficiency and perfect compatibility with the control precision, and is an ideal intelligent loading method;
g. stopping the machine: when the jacking displacement of the structural member is close to a control value, the main control module 31 controls the motor 21 to stop slowly.
Claims (2)
1. The utility model provides a wireless portable lead screw jacking system, includes climbing mechanism (1), characterized by: also comprises a self-adaptive telescopic unit (2), a control unit (3), a displacement sensor (41), a force measuring sensor (42) and a power supply (5),
the jacking mechanism (1) comprises a jacking screw rod (11) and a jacking platform (12), and the jacking platform (12) is fixed at the top end of the jacking screw rod (11); the self-adaptive telescopic unit (2) comprises a motor (21), a fixed support (22) and a transmission mechanism (23), the motor (21) is fixed on the fixed support (22), an output shaft of the motor (21) is connected with the jacking screw rod (11) through the transmission mechanism (23), and the transmission mechanism (23) converts the rotation of the output shaft of the motor (21) into the translation of the jacking screw rod (11) in the vertical direction;
the control unit (3) comprises a main control module (31), a wireless transmission module (32), a data acquisition module (33) and a power switch (34), the main control module (31) is respectively connected with the wireless transmission module (32) and the data acquisition module (33) through signal lines, and the main control module (31) is also connected with the motor (21) through the signal line which is connected with the power switch (34) in series;
a displacement sensor (41) and a force measuring sensor (42) are arranged on the jacking platform (12), and the displacement sensor (41) and the force measuring sensor (42) are connected with the data acquisition module (33) through signal lines;
the power supply (5) is respectively connected with the jacking mechanism (1), the self-adaptive telescopic unit (2) and the control unit (3) through leads.
2. The wireless portable screw jacking system of claim 1, wherein:
the motor (21) is a variable frequency motor;
the transmission mechanism (23) is selected as follows:
when the central axes of an output shaft of a motor (21) and a jacking screw rod (11) are coincident with each other, a screw rod-nut assembly is selected;
when the central axes of the output shaft of the motor (21) and the central axes of the jacking screw rod (11) are parallel to each other, a parallel gear set is selected;
thirdly, when the central axes of the output shaft of the motor (21) and the jacking screw rod (11) are mutually vertical, a bevel gear set or a worm gear-worm set is selected;
the power supply (5) adopts a storage battery.
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| CN201922367046.8U CN211846965U (en) | 2019-12-25 | 2019-12-25 | Wireless portable screw rod jacking system |
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| CN201922367046.8U CN211846965U (en) | 2019-12-25 | 2019-12-25 | Wireless portable screw rod jacking system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137801A (en) * | 2019-12-25 | 2020-05-12 | 上海同禾工程科技股份有限公司 | Wireless portable screw rod jacking system and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111137801A (en) * | 2019-12-25 | 2020-05-12 | 上海同禾工程科技股份有限公司 | Wireless portable screw rod jacking system and using method thereof |
| CN111137801B (en) * | 2019-12-25 | 2024-02-20 | 上海同禾工程科技股份有限公司 | Wireless portable screw rod jacking system and using method thereof |
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