CN104963514A - Control system with a plurality of prestress intelligent tensioning devices - Google Patents
Control system with a plurality of prestress intelligent tensioning devices Download PDFInfo
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- CN104963514A CN104963514A CN201510206898.2A CN201510206898A CN104963514A CN 104963514 A CN104963514 A CN 104963514A CN 201510206898 A CN201510206898 A CN 201510206898A CN 104963514 A CN104963514 A CN 104963514A
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Abstract
The invention provides a control system with a plurality of prestress intelligent tensioning devices. Each prestress intelligent tensioning device comprises a data processing unit, a jack driving unit, wireless network communication modules, and a remote real-time monitoring unit. The data processing unit is connected with the jack driving unit. The jack driving unit is also connected with a tensioning jack, so that the data processing unit sends commands to the jack driving unit to control operation of the tensioning jack. The wireless network communication modules are connected with the corresponding data processing unit, and one of the wireless network communication modules is connected with other wireless network communication modules. The remote real-time monitoring unit comprises a remote computer and a remote wireless network communication module connected with each other. The remote computer is connected with the data processing unit in a communication manner through the remote wireless network communication module. The system greatly improves prestress tensioning construction efficiency, and construction results are high in precision and low in cost, and engineering quality is effectively ensured.
Description
Technical field
The invention belongs to prestressed Construction Technology field, relate to a kind of prestress control system, especially there is the control system of multiple stage prestressing force intelligent tensioning equipment.
Background technology
Traditional prestress tensioning equipment controls the work of stretch-draw jack by Artificial Control high-voltage electric oil pump, synchronism when effectively cannot control stretch-draw, holds the uniformity of lotus time and control stress for prestressing and effective prestress.Meanwhile, in pre existing stress work progress, every platform tensioning equipment all wants independent engineers and technicians manipulation, and construction speed is slow, and multiple stage is constructed simultaneously and cannot be kept the uniformity of construction speed, and efficiency of construction receives serious restriction.
In addition, in prior art, the system of prestressing force being carried out to cable tensios control is before prestressed stretch-draw prepares, and stretch-draw target component all inputs by computer is on-the-spot temporarily, inefficiency and easily makeing mistakes.And in prestressed stretch-draw process, be auxiliaryly carry out dual control with control for steel strand elongation of advocating peace, when control arrives, all think that stretching construction is qualified, carry out next step process when steel strand elongation is not in acceptability limit, gained effective tension stress precision is lower.Simultaneously due in prestressed stretch-draw process, all tension data results are all be stored in on-the-spot computer to carry out record, constructor can amendment record table, if therefore there are abnormal conditions in stretch-draw, constructor only needs just can change related measurement data by rule of thumb, the data being finally delivered to higher level department are nearly all qualified, when a problem occurs, cannot find out real reason.In addition, strain-pull controlling of prestress system of the prior art cannot carry out remote maintenance, and system cannot be upgraded; Also be because this reason, in existing prestressed stretch-draw process, usually closely operate at the construction field (site), unexpected industrial accident cannot be avoided.In addition, in prestressed stretch-draw process, control method all cannot realize unlimited inverted engine.When realizing carrying out synchronous tension to the two ends of presstressed reinforcing steel, the problems referred to above are given prominence to especially.Just because of there are the problems referred to above, especially the multiple stage tensioning equipment technology of simultaneously constructing is intelligent not for existing prestressing stretching technique, and the prestressing force intelligent tensioning control system that can solve the problem has extremely strong Research Significance and very large using value.
Summary of the invention
Main purpose of the present invention is to provide a kind of structure simply to have the control system of multiple stage prestressing force intelligent tensioning equipment, effectively to improve operating efficiency and the constructing structure precision of stretching construction process, realizes stretching construction process full-automatic.
In order to achieve the above object, solution of the present invention is:
There is a control system for multiple stage prestressing force intelligent tensioning equipment, comprise more than three or three prestressing force intelligent tensioning equipment; Described in every platform, prestressing force intelligent tensioning equipment includes data processing unit, jack driver element, wireless network communication module and remote real-time monitoring unit; Described data processing unit is connected with described jack driver element, described jack driver element also connects with corresponding stretch-draw jack, sends instruction to control the work of described stretch-draw jack to allow described data processing unit to described jack driver element; Described wireless network communication module then connects with corresponding data processing unit; Wherein have the wireless network communication module of a described prestressing force intelligent tensioning equipment respectively the wireless network communication module of prestressing force intelligent tensioning equipment described in platform every with other be connected by wireless transmission method; Described remote real-time monitoring unit comprises interconnective remote computer and remote wireless network communication module, and described remote computer is communicated to connect by described remote wireless network communication module and described data processing unit.
Described data processing unit is data processing circuit; Described jack driver element is jack drive circuit; Described data processing circuit is connected by I/O interface with described jack drive circuit; Described wireless network communication module is wireless communication assembly, is connected by RS485 interface with corresponding data processing circuit; Described data processing unit is level signal instruction to the instruction that described jack driver element sends.
Described remote real-time monitoring unit is remote real-time monitoring assembly, comprise be connected by Ethernet interface with described remote computer Internet/3G/4G server, to be surfed the Net client by the wireless 3G/4G that wireless transmission method is connected with described Internet/3G/4G server; Described equipment also comprises switch, and described switch connects described wireless 3G/4G online client and described data processing unit respectively by Ethernet interface.
The jack running parameter that prestressing force intelligent tensioning equipment described in every platform all also comprises the operating parameter information connected to detect stretch-draw jack in real time with corresponding stretch-draw jack detects and transmission unit; Described jack running parameter detects and is also connected with described data processing unit with transmission unit, with the operating parameter information allowing described data processing unit to obtain described stretch-draw jack.
In prestressing force intelligent tensioning equipment described in every platform, described jack running parameter detects and comprises oil pressure sensor, displacement transducer and analog input/output circuit with transmission unit; The test side of described oil pressure sensor connects the oil circuit of stretch-draw jack, and signal output part then connects described analog input/output circuit, delivers to described analog input/output circuit with the operating oil pressure Data Concurrent detecting stretch-draw jack; The test side of institute's displacement sensors connects stretch-draw jack, and signal output part connects described analog input/output circuit, to detect the stretch-draw displacement data of stretch-draw jack and to be sent to described analog input/output circuit; Described analog input/output circuit also connection data processing unit, to realize the process of described oil pressure data and described stretch-draw displacement data and to be sent to described data processing unit.
Preferably, the signal output part of described oil pressure sensor connects described analog input/output circuit by analog quantity interface.
Preferably, the signal output part of institute's displacement sensors connects described analog input/output circuit by analog quantity interface.
Preferably, described analog input/output circuit connects described data processing circuit by analog quantity interface.
Preferably, described jack running parameter detects and also comprises antiarch displacement transducer with transmission unit, and the test side of described antiarch displacement transducer connects prestressed girder, to detect the antiarch value of prestressed girder; The output of described antiarch displacement transducer connects described analog input/output circuit by analog quantity interface.
The single-ended intelligent tensioning device of prestressing force described in every platform also includes the memory cell storing target tension data; Described memory cell is connected with described data processing unit, the target tension data stored is obtained to allow described data processing unit, and analyze and contrast the operating parameter information of described target tension data and described stretch-draw jack, and send the instruction of stretch-draw jack corresponding to operation to described jack driver element.
Described memory cell comprises USB storage and man-machine operation and control interface device, and described USB storage connects described man-machine operation and control interface device by USB interface, to allow staff by man-machine operation and control interface device to described memory input target tension data; Described man-machine operation and control interface device connects described switch by Ethernet interface, transmits with auxiliary data between described USB storage and described data processing unit.
Described in every platform, prestressing force intelligent tensioning equipment also comprises remote control unit; Described remote control unit comprises hand-held set wireless network communication module and hand-held set remote controller; Wherein, described hand-held set wireless network communication module is connected by I/O interface with described data processing unit, described hand-held set remote controller and described hand-held set wireless network communication module are by wireless transmission method wireless connections, to allow staff to send instruction by described hand-held set wireless network communication module to described data processing unit by described hand-held remote controller, realize the artificial Long-distance Control of described prestressing force intelligent tensioning equipment.
Prestressing force intelligent tensioning equipment described in every platform also comprises the real-time monitoring unit in scene be connected with described switch; The real-time monitoring unit in described scene comprises on-the-spot computer and wireless WIFI module, and described wireless WIFI module connects described on-the-spot computer by wireless transmission method, and connects described switch by Ethernet interface.
In prestressing force intelligent tensioning equipment described in every platform, described jack driver element comprises the oil circuit valve be connected with the oil circuit of stretch-draw jack, and the variable-frequency motor be connected with described oil circuit valve; Described variable-frequency motor is also connected with described data processing unit, to control the action of described oil circuit valve under the instruction of described data processing unit, and then controls the work of described stretch-draw jack.
Owing to adopting such scheme, the invention has the beneficial effects as follows: the present invention has the control system of multiple stage prestressing force intelligent tensioning equipment by being connected by wireless network by multiple stage prestressing force intelligent tensioning equipment, achieve and control multiple stage prestressing force intelligent tensioning equipment by manipulating a wherein prestressing force intelligent tensioning equipment simultaneously, these prestressing force intelligent tensioning equipment are constructed simultaneously, improve construction speed, save cost of labor.In addition, every platform prestressing force intelligent tensioning equipment wherein can realize the Automatic Control to prestressed stretch-draw on the one hand, and efficiency of construction is high, and can realize time inverted engine arbitrarily, the effective prestress obtained accurately and reliably; The Long-distance Control to stretch-draw jack can be realized on the other hand, effectively can avoid the generation of unexpected industrial accident, the life security of safeguard work personnel.This system architecture is simple, user-friendly for operation, is easily understood; Meanwhile, in real time tension data can be transferred to remote computer database by surf the Net client and Internet/3G/4G server of 3G/4G in stretching process, data persistence is also published on network, can realize dates back, effectively guarantee workmanship.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control system in the embodiment of the present invention with multiple stage prestressing force intelligent tensioning equipment;
Fig. 2 is the structural representation of every platform prestressing force intelligent tensioning equipment in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is further illustrated.
The present invention proposes a kind of control system with multiple stage prestressing force intelligent tensioning equipment, Figure 1 shows that the structural representation of this equipment.As can be seen from Figure 1, this control system comprises more than three or three prestressing force intelligent tensioning equipment; Figure 2 shows that the structural representation of every platform prestressing force intelligent tensioning equipment.As can be seen from Fig. 1 and Fig. 2, every platform prestressing force intelligent tensioning equipment includes memory cell, data processing unit, jack running parameter detects and transmission unit, jack driver element, remote real-time monitoring unit, scene monitoring unit, switch and wireless network communication module in real time.
Above-mentioned data processing unit is connected with jack driver element, and jack driver element also connects with corresponding stretch-draw jack, to send instruction to control the work of stretch-draw jack by data processing unit to jack driver element.Wireless network communication module is then connected with data processing unit.
In the present embodiment, above-mentioned data processing unit is data processing circuit; Jack driver element is jack drive circuit; Data processing circuit is connected by I/O interface with jack drive circuit.Data processing circuit is level signal instruction to the instruction that jack drive circuit sends.Above-mentioned wireless network communication module is wireless communication assembly, is connected by RS485 interface with corresponding data processing circuit.
Above-mentioned remote real-time monitoring unit comprises interconnective remote computer and remote wireless network communication module, and this remote computer is communicated to connect by remote wireless network communication module and data processing unit; This remote wireless network communication module is remote wireless network communications component, comprise be connected by Ethernet interface with remote computer Internet/3G/4G server, to be surfed the Net client by the wireless 3G/4G that wireless transmission method is connected with Internet/3G/4G server.In the present embodiment, have the wireless network communication module of a prestressing force intelligent tensioning equipment respectively the wireless network communication module of prestressing force intelligent tensioning equipment described in platform every with other be connected by wireless transmission method.Thus, by the remote real-time monitoring unit of this prestressing force intelligent tensioning equipment, both can manipulate this prestressing force intelligent tensioning equipment, other each prestressing force intelligent tensioning equipment can have been manipulated again.Namely in the present embodiment, this prestressing force intelligent tensioning equipment is main tensioning equipment, and other every platform prestressing force intelligent tensioning equipment are secondary tensioning equipment; Secondary tensioning equipment can be controlled by controlling main tensioning equipment simultaneously, realize controlling while multiple stage prestressing force intelligent tensioning equipment, to communicate with the wireless network communication module of other each secondary tensioning equipments the manipulation realized other each secondary tensioning equipments specifically by the remote real-time monitoring unit of this main tensioning equipment, wireless network communication module.
Said memory cells is connected with data processing unit by switch, to store target tension data and to allow data processing unit to obtain the target tension data stored.In the present embodiment, this memory cell is memory module, comprises USB storage and man-machine operation and control interface device; Wherein, USB storage connects this man-machine operation and control interface device by USB interface, passes through this man-machine operation and control interface device to this USB storage input target tension data to allow staff; This man-machine operation and control interface device connects switch by Ethernet interface, and switch, by Ethernet interface connection data processing unit, transmits with the data between auxiliary USB storage and data processing unit.In the present embodiment, above-mentioned target tension data comprises steel strand target control stretching force, theoretical elongation, and beam is numbered, Suo Hao, classification percentage, the classification dwell time, whether ultra stretching when elongation is inadequate, ultra stretching percentage, ultra stretching dwell time etc.
Above-mentioned jack running parameter detects and is connected stretch-draw jack with transmission unit, to detect the operating parameter information of stretch-draw jack in real time.This jack running parameter detects and transmission unit connection data processing unit again, with the operating parameter information allowing data processing unit to obtain stretch-draw jack.
In the present embodiment, it is that jack running parameter detects and transmission assembly that this jack running parameter detects with transmission unit, comprises oil pressure sensor, displacement transducer and analog input/output circuit.The test side of this oil pressure sensor connects the oil circuit of stretch-draw jack, signal output part then passes through analog quantity interface connection mode analog quantity input/output circuitry, to detect the operating oil pressure data of stretch-draw jack and to be sent to analog input/output circuit with level signal; The test side of this displacement transducer connects stretch-draw jack, and signal output part passes through analog quantity interface connection mode analog quantity input/output circuitry, to detect the stretch-draw displacement data of stretch-draw jack and to be sent to analog input/output circuit with level signal; This analog input/output circuit also passes through analog quantity interfacing data processing unit, to realize the process of oil pressure data and stretch-draw displacement data and to be sent to data processing unit with level signal.
Data processing unit connects jack running parameter and detects and transmission unit, memory cell and jack driver element, the target tension data obtained from memory cell with contrast and analysis and detect the operating parameter information of the stretch-draw jack obtained with transmission unit from jack running parameter, and the level signal instruction operating stretch-draw jack is sent to jack driver element.Jack driver element connects stretch-draw jack, according to the level signal command operating stretch-draw jack received from data processing unit.
In the present embodiment, jack driver element is jack drive circuit, comprises oil circuit valve and variable-frequency motor.The oil circuit of stretch-draw jack comprises inflow pipeline and oil returning tube, and oil circuit valve is communicated with and controls inflow pipeline and oil returning tube, and variable-frequency motor then connects this oil circuit valve on the one hand, on the other hand by I/O interfacing data processing unit.Variable-frequency motor according to the level signal instruction oil circuit control valve obtained from data processing unit, and then controls the work of stretch-draw jack.
The single-ended intelligent tensioning device of every platform prestressing force also comprises remote control unit.In the present embodiment, this remote control unit comprises remote control assembly, and this remote control assembly comprises hand-held set wireless network communication module and hand-held set remote controller; Wherein, hand-held set wireless network communication module is connected by I/O interface with data processing unit, hand-held set remote controller and hand-held set wireless network communication module are by wireless transmission method wireless connections, to allow staff to pass through hand-held set wireless network communication module to data processing unit transmission level signal instruction by hand-held remote controller, realize the artificial Long-distance Control of prestressing force single-ended intelligent tensioning device.In the present embodiment, this hand-held set wireless network communication module comprises hand-held set wireless communication assembly, the F21 Series Remote Controller device that this hand-held set remote controller adopts Taiwan Yu Ding company to produce.
Switch is on the one hand by Ethernet interface connection data processing unit, connect memory cell, the real-time monitoring unit of remote real-time monitoring unit and scene respectively by Ethernet interface on the other hand, transmit with the data of ASU auxiliary storage unit, the real-time monitoring unit of remote real-time monitoring unit and scene and data processing unit.
In the present embodiment, the real-time monitoring unit in above-mentioned scene comprises on-the-spot monitor component in real time, and this scene in real time monitor component comprises on-the-spot computer and wireless WIFI module, is communicated to connect between this on-the-spot computer and wireless WIFI module by wireless transmission method.This is wireless, and WIFI module is connected with switch by Ethernet interface, thus on-the-spot computer can obtain the real-time working parameter of stretch-draw jack for field personnel's reference by wireless WIFI module and switch from data processing unit, and staff can operation site computer by the jack of wireless WIFI module, switch, data processing unit and then manipulation correspondence.In the present embodiment, wireless WIFI module comprises wireless WIFI assembly.
In the present invention, remote real-time monitoring unit also has the function of Real-time Collection jack running parameter, be specially remote computer by Internet/3G/4G server, wireless 3G/4G online client and switch, obtain the real-time working parameter of stretch-draw jack for remote worker's reference from data processing unit.In the present embodiment, remote real-time monitoring unit comprises remote real-time monitoring assembly.
In addition, above-mentioned jack running parameter detects and also comprises antiarch displacement transducer with transmission unit, and the test side of this antiarch displacement transducer connects prestressed girder, to detect the antiarch value of prestressed girder; Its output is by analog quantity interface connection mode analog quantity input/output circuitry, thus measured antiarch value can be transferred to data processing circuit by analog input/output circuit, reference during to make a policy as data processing circuit to jack drive circuit.
The present invention has the control system of multiple stage prestressing force intelligent tensioning equipment by being connected with computer by wireless network by multiple stage prestressing force intelligent tensioning equipment, achieve a computer and control multiple stage prestressing force intelligent tensioning equipment simultaneously, multiple stage prestressing force intelligent tensioning equipment is constructed simultaneously, improve construction speed, save cost of labor.In addition, prestressing force intelligent tensioning equipment wherein can realize the Automatic Control to prestressed stretch-draw on the one hand, and efficiency of construction is high, and can realize time inverted engine arbitrarily, the effective prestress obtained accurately and reliably; The Long-distance Control to stretch-draw jack can be realized on the other hand, effectively can avoid the generation of unexpected industrial accident, the life security of safeguard work personnel.This system architecture is simple, user-friendly for operation, is easily understood; Meanwhile, in real time tension data can be transferred to remote computer database by surf the Net client and Internet/3G/4G server of 3G/4G in stretching process, data persistence is also published on network, can realize dates back, effectively guarantee workmanship.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. there is a control system for multiple stage prestressing force intelligent tensioning equipment, it is characterized in that: comprise more than three or three prestressing force intelligent tensioning equipment; Described in every platform, prestressing force intelligent tensioning equipment includes data processing unit, jack driver element, wireless network communication module and remote real-time monitoring unit;
Described data processing unit is connected with described jack driver element, described jack driver element also connects with corresponding stretch-draw jack, sends instruction to control the work of described stretch-draw jack to allow described data processing unit to described jack driver element;
Described wireless network communication module then connects with corresponding data processing unit; Wherein have the wireless network communication module of a described prestressing force intelligent tensioning equipment respectively the wireless network communication module of prestressing force intelligent tensioning equipment described in platform every with other be connected by wireless transmission method;
Described remote real-time monitoring unit comprises interconnective remote computer and remote wireless network communication module, and described remote computer is communicated to connect by described remote wireless network communication module and described data processing unit.
2. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 1, is characterized in that: described data processing unit is data processing circuit; Described jack driver element is jack drive circuit; Described data processing circuit is connected by I/O interface with described jack drive circuit;
Described wireless network communication module is wireless communication assembly, is connected by RS485 interface with corresponding data processing circuit;
Described data processing unit is level signal instruction to the instruction that described jack driver element sends.
3. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 1, it is characterized in that: described remote real-time monitoring unit is remote real-time monitoring assembly, comprise be connected by Ethernet interface with described remote computer Internet/3G/4G server, to be surfed the Net client by the wireless 3G/4G that wireless transmission method is connected with described Internet/3G/4G server;
Described equipment also comprises switch, and described switch connects described wireless 3G/4G online client and described data processing unit respectively by Ethernet interface.
4. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 3, is characterized in that: the jack running parameter that prestressing force intelligent tensioning equipment described in every platform all also comprises the operating parameter information connected to detect stretch-draw jack in real time with corresponding stretch-draw jack detects and transmission unit;
Described jack running parameter detects and is also connected with described data processing unit with transmission unit, with the operating parameter information allowing described data processing unit to obtain described stretch-draw jack.
5. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 4, it is characterized in that: in prestressing force intelligent tensioning equipment described in every platform, described jack running parameter detects and comprises oil pressure sensor, displacement transducer and analog input/output circuit with transmission unit;
The test side of described oil pressure sensor connects the oil circuit of stretch-draw jack, and signal output part then connects described analog input/output circuit, delivers to described analog input/output circuit with the operating oil pressure Data Concurrent detecting stretch-draw jack;
The test side of institute's displacement sensors connects stretch-draw jack, and signal output part connects described analog input/output circuit, to detect the stretch-draw displacement data of stretch-draw jack and to be sent to described analog input/output circuit;
Described analog input/output circuit also connection data processing unit, to realize the process of described oil pressure data and described stretch-draw displacement data and to be sent to described data processing unit;
Preferably, the signal output part of described oil pressure sensor connects described analog input/output circuit by analog quantity interface;
Preferably, the signal output part of institute's displacement sensors connects described analog input/output circuit by analog quantity interface;
Preferably, described analog input/output circuit connects described data processing circuit by analog quantity interface;
Preferably, described jack running parameter detects and also comprises antiarch displacement transducer with transmission unit, and the test side of described antiarch displacement transducer connects prestressed girder, to detect the antiarch value of prestressed girder; The output of described antiarch displacement transducer connects described analog input/output circuit by analog quantity interface.
6. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 4, is characterized in that: described in every platform, the single-ended intelligent tensioning device of prestressing force also includes the memory cell storing target tension data; Described memory cell is connected with described data processing unit, the target tension data stored is obtained to allow described data processing unit, and analyze and contrast the operating parameter information of described target tension data and described stretch-draw jack, and send the instruction of stretch-draw jack corresponding to operation to described jack driver element.
7. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 6, it is characterized in that: described memory cell comprises USB storage and man-machine operation and control interface device, described USB storage connects described man-machine operation and control interface device by USB interface, to allow staff by man-machine operation and control interface device to described memory input target tension data;
Described man-machine operation and control interface device connects described switch by Ethernet interface, transmits with auxiliary data between described USB storage and described data processing unit.
8. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 1, is characterized in that: described in every platform, prestressing force intelligent tensioning equipment also comprises remote control unit; Described remote control unit comprises hand-held set wireless network communication module and hand-held set remote controller; Wherein, described hand-held set wireless network communication module is connected by I/O interface with described data processing unit, described hand-held set remote controller and described hand-held set wireless network communication module are by wireless transmission method wireless connections, to allow staff to send instruction by described hand-held set wireless network communication module to described data processing unit by described hand-held remote controller, realize the artificial Long-distance Control of described prestressing force intelligent tensioning equipment.
9. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 3, is characterized in that: described in every platform, prestressing force intelligent tensioning equipment also comprises the real-time monitoring unit in scene be connected with described switch; The real-time monitoring unit in described scene comprises on-the-spot computer and wireless WIFI module, and described wireless WIFI module connects described on-the-spot computer by wireless transmission method, and connects described switch by Ethernet interface.
10. the control system with multiple stage prestressing force intelligent tensioning equipment according to claim 1, it is characterized in that: in prestressing force intelligent tensioning equipment described in every platform, described jack driver element comprises the oil circuit valve be connected with the oil circuit of stretch-draw jack, and the variable-frequency motor be connected with described oil circuit valve; Described variable-frequency motor is also connected with described data processing unit, to control the action of described oil circuit valve under the instruction of described data processing unit, and then controls the work of described stretch-draw jack.
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| CN201510206898.2A CN104963514A (en) | 2015-04-27 | 2015-04-27 | Control system with a plurality of prestress intelligent tensioning devices |
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| CN201510206898.2A CN104963514A (en) | 2015-04-27 | 2015-04-27 | Control system with a plurality of prestress intelligent tensioning devices |
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Application publication date: 20151007 |
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