CN113649799A - Portable intelligent bolt stretching device - Google Patents
Portable intelligent bolt stretching device Download PDFInfo
- Publication number
- CN113649799A CN113649799A CN202110823038.9A CN202110823038A CN113649799A CN 113649799 A CN113649799 A CN 113649799A CN 202110823038 A CN202110823038 A CN 202110823038A CN 113649799 A CN113649799 A CN 113649799A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- nut
- chip
- main control
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 92
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a portable intelligent bolt stretching device which comprises a stretcher and a hydraulic control box, wherein a hydraulic module and a control module are integrated in the hydraulic control box; the stretcher comprises a stretching head, a hydraulic cylinder, a supporting seat, a nut driving motor, a gear and a nut sleeve; the hydraulic module comprises a hydraulic oil tank, an oil pump driving motor, an unloading valve and a quick connector; the control module comprises a main control chip, and an oil pump motor driving chip, a nut motor driving chip and a pressure sensor which are respectively connected with the main control chip, wherein the pressure sensor monitors the pressure value in the oil pipe in real time and feeds the real-time pressure value back to the main control chip, and the main control chip respectively controls the two motors to work through the oil pump motor driving chip and the nut motor driving chip. According to the invention, through the integrated design of mechanical transmission, a motor power supply, hydraulic transmission and intelligent control, a set of professional and scientific bolt stretching device design scheme is formed, and a method is provided for the design standardization of an intelligent bolt stretching device.
Description
Technical Field
The invention belongs to the technical field of major equipment installation, and particularly relates to a portable intelligent bolt stretching device.
Background
The bolt connection is widely applied to the fields of petrochemical industry, nuclear power, wind power, ships and the like, and particularly in pressure vessels and equipment of systems of petrochemical industry, nuclear power, new energy and the like, the quality of the bolt connection effect is directly related to the service life of the equipment and the production safety of enterprises. With the increasing importance of major engineering and advanced equipment, the requirements of large diameter, large torque and large pretightening force of the equipment fastening bolt are particularly outstanding. Therefore, the reasonable control of the bolt pretightening force is a necessary guarantee for the reliable connection of the bolt and is also the focus of the current research.
The hydraulic bolt stretching device is a tool specially used for fastening and disassembling bolts, and a hydraulic system is used for stretching a tightened bolt to reach a preset load and then mechanically locking the tightened bolt on a fastening piece, so that the aim of pre-tightening is fulfilled. The traditional bolt stretching device complete equipment consists of a high-pressure oil pump, a high-pressure hose, a pressure gauge and a stretching device body. The high-pressure pump is used as a power source, the pressure gauge reflects the output pressure of the pump, and the high-pressure hose is connected with the high-pressure pump and the stretching device. The working principle of the traditional hydraulic stretching device is as follows: high-pressure oil enters the working cavity of the oil cylinder through the high-pressure quick connector, the piston is jacked upwards along with the increase of the pressure in the cavity, the bolt is driven to move together when the piston rises, and the stretched bolt is screwed in the threaded sleeve, so that the bolt is stretched in the elastic deformation range along with the rise of the nut, the nut can be separated from the contact surface, and at the moment, an operator rotates the nut at the opening at the lower end of the stretching device by using a hand rod; the high-pressure oil in the oil cylinder is removed, the bolt is locked by the elasticity of the bolt to deform axially, and therefore the purpose of pre-tightening the bolt is achieved.
Therefore, the bolt hydraulic stretching device directly stretches the bolt by using pure tension without torsional shear force and lateral force and friction damage to a connected contact surface, and the method is the optimal method for accurately controlling the pretightening force of the bolt. Compared with a hydraulic torque wrench, the hydraulic torque wrench has the advantages of quick and accurate reaction, no torsional stress and no friction damage, and can synchronously pre-tighten a plurality of bolts; therefore, the bolt stretching device is widely applied to occasions with strict requirements on pretightening force. Although the conventional hydraulic bolt tensioning device has many advantages, the following disadvantages still exist: 1. the piping is long and much, and the volume is large, so that the convenience of the device is not enough; 2. manual operation is needed, and the installation efficiency is not high; 3. the pre-tightening force is not accurately set, and the automation degree is not high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a portable intelligent bolt stretching device with a cooperative work of a mechanical-electrical-hydraulic-control module, aiming at the defects of poor convenience, low installation efficiency and low automation degree of the existing hydraulic bolt stretching device, wherein the device can adapt to automatic pre-tightening of nuts with large diameters and large torques, synchronous and accurate pressurization and pipeless of a plurality of groups of bolts in different industries, and realizes quick, accurate, portable, synchronous and intelligent dismounting of the bolts.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a portable intelligent bolt stretching device is characterized by comprising a stretcher and a hydraulic control box, wherein a hydraulic module and a control module are integrated in the hydraulic control box;
the stretcher comprises a stretching head, a hydraulic cylinder, a supporting seat, a nut driving motor, a gear and a nut sleeve; the cylinder sleeve of the hydraulic cylinder is fixedly arranged on the supporting seat, and the piston of the hydraulic cylinder is movably arranged in the cylinder sleeve; the lower end of the stretching head is connected with the upper end of the piston, the stretching head is provided with internal threads, and the stretching head is connected with the extending part of the bolt through threads; the nut driving motor is arranged on the supporting seat, and a gear is arranged at the power output end of the nut driving motor; the supporting seat is hollow inside so as to accommodate the nut sleeve; the nut sleeve is sleeved on the nut, the outer ring of the nut sleeve is meshed with the gear, and the gear is driven to rotate by the nut driving motor, so that the nut sleeve and the nut are driven to synchronously rotate to realize pre-tightening;
the hydraulic module comprises a hydraulic oil tank, an oil pump driving motor, an unloading valve and a quick connector; the hydraulic oil tank is connected with an oil pump, the oil pump is connected with a quick connector through an oil pipe, the quick connector is arranged outside the hydraulic control box and used for connecting the oil pump with the hydraulic cylinder of the stretcher, and an oil pump driving motor is connected with the oil pump and drives the oil pump to operate so as to pump hydraulic oil in the hydraulic oil tank into a high-pressure oil cavity of the hydraulic cylinder; one end of the unloading valve is connected with the stretcher through a quick connector, and the other end of the unloading valve is connected with the hydraulic oil tank and used for enabling high-pressure hydraulic oil to flow back into the hydraulic oil tank after the pre-tightening is finished;
the control module comprises a main control chip, and an oil pump motor driving chip, a nut motor driving chip and a pressure sensor which are connected with the main control chip respectively, wherein the pressure sensor is arranged in an oil pipe between an oil pump and a quick joint, the pressure value in the oil pipe is monitored in real time, the real-time pressure value is fed back to the main control chip, and the main control chip controls the oil pump driving motor and the nut driving motor to work respectively through the oil pump motor driving chip and the nut motor driving chip.
In the above scheme, the nut sleeve and the nut are installed in a matched manner, and the outer wall of the nut sleeve is provided with teeth matched with the gear.
In the above scheme, the unloading valve is connected with the main control chip, and the unloading valve is controlled to be opened or closed by the main control chip.
In the above scheme, the hydraulic module further comprises a one-way valve, and the one-way valve is arranged on the upstream of the unloading valve and used for preventing the backflow of hydraulic oil after pressurization is stopped.
In the above scheme, the hydraulic module further comprises a safety valve, the safety valve is arranged on a branch between the hydraulic oil tank and the oil pump, and when the pressure in the oil pipe exceeds a safety value, the safety valve is automatically opened, so that the hydraulic oil is recovered to normal pressure and flows back to the hydraulic oil tank.
In the above scheme, control module still includes a band LCD display screen's operating panel and a LCD driver chip, LCD driver chip is connected with main control chip, and LCD driver chip accepts main control chip's instruction control LCD display screen and shows the pressure value in the oil pressure intracavity.
In the above scheme, the operation panel further comprises two keys for controlling the hydraulic pressure and a start-stop key for controlling whether pressurization is performed.
In the above scheme, the control module further comprises a remote control module, the main control chip is connected with the remote control module through a bluetooth module or WIFI, and the execution action of the main control chip is controlled through the remote control module; the remote control module can simultaneously control a plurality of bolt stretching devices to synchronously operate.
In the above scheme, the control module further comprises an AD conversion chip, the AD conversion chip is connected with the pressure sensor, and converts the pressure signal collected by the pressure sensor into a digital signal and then sends the digital signal to the main control chip.
In the above scheme, still be equipped with the battery jar in the hydraulic control box, install detachable rechargeable battery in the battery jar for nut driving motor, oil pump driving motor power supply and main control chip power supply.
The invention has the beneficial effects that:
1. according to the invention, the nut driving motor, the gear and the nut sleeve are arranged on the stretcher, so that the nut can be automatically pre-tightened, and the problem of low installation efficiency caused by manual pre-tightening is solved. Through the double-motor collaborative stretching pre-tightening, the working efficiency is greatly improved.
2. The invention adopts the way of oil pump pressurization to replace the hand-operated pressurization structure of the traditional bolt hydraulic stretching device, thereby reducing the volume and the weight of the device and improving the portability of the device.
3. The stretcher is connected with the hydraulic control box through a quick joint, so that the stretching devices with different sizes can be quickly replaced conveniently; the pipeless is achieved by replacing the long hose of the conventional stretching unit with a very short length of hard tubing upstream of the quick connector.
4. The device can realize the man-machine interactive control beside the machine or in a remote way, the pressure is accurately sensed through the pressure sensor, the pretightening force is set more accurately, and the automation degree is high.
5. The invention can simultaneously control a plurality of groups of bolts to synchronously and accurately pressurize through a remote control module, thereby realizing quick, accurate, portable, synchronous and intelligent disassembly and assembly of the bolts.
6. According to the intelligent bolt stretching device, a set of professional and scientific bolt stretching device design scheme is formed through the integrated design of mechanical transmission, a motor power supply, hydraulic transmission and intelligent control, and a method is provided for the design standardization of the intelligent bolt stretching device; meanwhile, the intelligent bolt stretching device is designed, and the requirements of major engineering and key equipment on large-diameter and large-pretightening-force bolts are met.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a perspective view of the portable intelligent bolt tensioning device of the present invention;
FIG. 2 is a sectional view of the portable intelligent bolt tensioning device shown in FIG. 1;
FIG. 3 is a block diagram of the portable intelligent bolt tensioning device of the present invention;
FIG. 4 is a flow chart of HMI key control for the portable intelligent bolt tensioning device of the present invention;
fig. 5 is a schematic view of a plurality of portable intelligent bolt tensioning devices in use simultaneously.
In the figure: 10. a stretcher; 11. a stretching head; 12. a piston; 13. a cylinder liner; 14. a supporting seat; 15. the nut drives the motor; 16. a gear; 17. a nut socket;
20. a hydraulic control box; 21. a hydraulic module; 211. a hydraulic oil tank; 212. an oil pump; 213. an oil pump drive motor; 214. a one-way valve; 215. an unloading valve; 216. a safety valve; 217. a battery case; 218. a quick coupling; 22. a control module; 221. an LCD display screen; 222. an operation panel.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the portable intelligent bolt tensioning device provided for the embodiment of the present invention includes a tensioner 10 and a hydraulic control box 20, and a hydraulic module 21 and a control module 22 are integrally disposed in the hydraulic control box 20.
The stretcher 10 is a mechanical module of the device and is used for automatically stretching and pre-tightening bolts. The stretcher 10 includes a stretching head 11, a hydraulic cylinder, a support base 14, a nut drive motor 15, a gear 16, and a nut socket 17. The hydraulic cylinder comprises a cylinder sleeve 13 and a piston 12, the cylinder sleeve 13 is fixedly arranged on the supporting seat 14, the piston 12 is movably arranged in the cylinder sleeve 13, and a high-pressure oil cavity is formed between the cylinder sleeve 13 and the piston 12. The lower end of the stretching head 11 is in contact with the upper end of the piston 12, and the stretching head 11 is provided with an internal thread to which a bolt extension is connected by a thread. High-pressure oil from the hydraulic module 21 is continuously gathered in the high-pressure oil chamber, the piston 12 is pushed to move upwards, and meanwhile, the piston 12 pushes the stretching head 11 to stretch the bolt. The nut driving motor 15 is mounted on the supporting seat 14, and the power output end of the nut driving motor is provided with a gear 16. The bearing block 14 is hollow inside in order to accommodate the nut socket 17. The nut sleeve 17 is used for being sleeved on the nut, the outer ring of the nut sleeve 17 is meshed with the gear 16, and the gear 16 is driven to rotate through the nut driving motor 15, so that the nut sleeve 17 and the nut are driven to synchronously rotate to achieve automatic pre-tightening.
The hydraulic module 21 includes a hydraulic oil tank 211, an oil filter, an oil pump 212, an oil pump drive motor 213, an unloading valve 215, a check valve 214, a relief valve 216, and a quick coupling 218. The hydraulic oil tank 211, the oil filter and the oil pump 212 are sequentially connected, the oil pump 212 is connected with the quick coupling 218 through an oil pipe, and the quick coupling 218 is arranged outside the hydraulic control box 20 and used for connecting the oil pump 212 with the hydraulic cylinder of the tensioner 10. The oil pump driving motor 213 is connected to the oil pump 212, and the oil pump 212 is driven by the oil pump driving motor 213 to continuously suck the hydraulic oil in the hydraulic oil tank 211 into the high-pressure oil pipe and continuously pressurize the hydraulic oil until the hydraulic oil reaches a set pressure value, and then the hydraulic oil is pumped into the high-pressure oil chamber of the hydraulic cylinder. The unloading valve 215 is connected to the tensioner 10 at one end thereof through a quick coupling 218 and connected to the hydraulic oil tank 211 at the other end thereof, and is used for returning the high-pressure hydraulic oil to the hydraulic oil tank 211 after the pre-tightening is finished. The check valve 214 is provided upstream of the unload valve 215 to prevent the hydraulic oil from flowing back after the pressurization is stopped. A relief valve 216 is provided in a branch between the hydraulic oil tank 211 and the oil pump 212 to prevent a risk of an excessive oil pressure in the hydraulic oil line.
The control module 22 comprises a main control chip, and an oil pump 212 motor driving chip, a nut motor driving chip and a pressure sensor which are respectively connected with the main control chip. The pressure sensor is arranged in the oil pipe between the oil pump 212 and the quick connector 218, monitors the pressure value in the oil pipe in real time, transmits the real-time pressure value to the AD conversion chip for analog-to-digital conversion and then feeds back the real-time pressure value to the main control chip, and the main control chip controls the oil pump driving motor 213 and the nut driving motor 15 to work through the oil pump 212 motor driving chip and the nut motor driving chip respectively. The control module 22 further includes an operation panel 222 with an LCD display 221 and an LCD driver chip, the LCD driver chip is connected to the main control chip, and the LCD driver chip receives the instruction from the main control chip to control the LCD display 221 to display the pressure value in the oil pressure chamber. The operation panel 222 further includes two buttons for controlling the magnitude of the hydraulic pressure and a start/stop button for controlling whether to pressurize the hydraulic pressure. Control module 22 still includes remote control module, and main control chip passes through bluetooth module or WIFI and is connected with remote control module, and bluetooth module transmits demand data to remote control module, and remote control module also can issue information to main control chip simultaneously, analyzes the instruction and moves.
Further preferably, the nut sleeve 17 and the nut are installed in a matched mode, and the outer wall of the nut sleeve 17 is provided with teeth matched with the gear 16.
Further preferably, the unloading valve 215 is connected with a main control chip, and the unloading valve 215 is controlled to open or close by the main control chip.
Further optimization, the remote control module is a PC or mobile terminal equipment.
Further optimizing, still be equipped with battery jar 217 in the hydraulic control box 20, install detachable rechargeable battery in the battery jar 217 for supply power for nut pretension motor, oil pump driving motor and main control chip.
Further, in the embodiment, the bluetooth module adopts a bluetooth development platform with a blueNRG-1 chip developed by ST company as a core, has the advantages of low power consumption, good stability and the like, and is very suitable for the use environment of the design.
The operator and control module 22 may interact through two schemes:
1) setting through a remote control module;
2) the operation panel with an LCD display screen is arranged beside the machine (hereinafter referred to as HMI interaction).
An operator sets the required pretightening force through the remote control module or the operation panel 222, and after receiving the command through the serial port, the main control chip respectively sends instructions to the two motor driving chips and the LCD driving chip to control the two driving motors to work and control the LCD screen to display the current state. The specific process comprises the following steps: the oil pump driving motor 213 drives the oil pump 212 to pressurize the hydraulic oil, the pressure sensor monitors the pressure value in the oil pipe in real time, and feeds the real-time pressure value back to the main control chip, and further sends the real-time pressure value to the LCD display screen 221; when the pressure value in the oil pipe reaches a preset pressure value, the screw rod is stretched, and the nut is driven by the nut driving motor 15 to rotate for pre-tightening; after the pre-tightening is finished, the unloading valve 215 is opened, the pressure is unloaded, and the hydraulic oil in the oil pipe is recovered to the normal pressure and flows back to the oil tank. When the pressure in the oil pipe exceeds the safety value, the safety valve 216 is automatically opened at the moment, so that the hydraulic oil is restored to the normal pressure and flows back to the oil tank.
In this embodiment, the master control chip adopts STM32 series chip, and oil pump motor drive chip and nut motor drive chip all adopt L9110S chip, and the LCD drive chip adopts the PCF8566 chip. The buttons on the operation panel 222 are buttons with lamps, and two buttons UP and DOWN on the left side represent pressure control and can adjust the pressure in the oil cavity; the right button START/STOP is the START STOP button of the device, which is colored green in the START-up state of the apparatus, and red in the reverse.
FIG. 4 is a flow chart of HMI key control, power switch on, driver initialization and preparation including driver for L9110S, initialization of keys, driver for PCF8566, AD initialization and Bluetooth module initialization. The main function enters key scanning, and when the CPU detects that the key is pressed, corresponding action is taken. If the pressure UP button is pressed, the CPU drives a stepping motor to drive an oil pump 212 according to a self-defined increment standard, and the pressure in the cavity is increased; otherwise, if the DOWN button is pressed, the pressure in the cavity is reduced. When button adjustment pressure, the main control chip receives the status information that the button pressed, the pressure that needs to reach in the oil pressure intracavity this moment is confirmed according to the pressure precision of button adjustment, then the main control chip drives oil pump driving motor 213 through control L9110S step motor drive chip, thereby make oil pump 212 work reach required oil pocket pressure, pressure sensor converts pressure signal into the signal of telecommunication, through AD conversion chip output digital signal to main control chip, the main control chip can be according to the pressure display numerical value on this signal control LCD drive chip control adjustment LCD display screen 221 in real time.
The remote terminal reads the AD value from the Bluetooth module communication part and then sends the AD value to the terminal. Firstly, a Bluetooth module is initialized to work in a broadcast state, a CPU continuously sends an AD value acquired in the Bluetooth module, and the Bluetooth module sends data to a terminal through a radio frequency circuit.
As shown in fig. 5, a plurality of bolt stretching devices are connected to the same remote control module through bluetooth or WIFI, and after the preparation is ready, after control terminal sent the pressurization instruction, each stretching device was pressurized simultaneously to real-time feedback pressure sensor gathered the pressure value, after reaching the set pressure, the device automatic stop pressurization.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A portable intelligent bolt stretching device is characterized by comprising a stretcher and a hydraulic control box, wherein a hydraulic module and a control module are integrated in the hydraulic control box;
the stretcher comprises a stretching head, a hydraulic cylinder, a supporting seat, a nut driving motor, a gear and a nut sleeve; the cylinder sleeve of the hydraulic cylinder is fixedly arranged on the supporting seat, and the piston of the hydraulic cylinder is movably arranged in the cylinder sleeve; the lower end of the stretching head is connected with the upper end of the piston, the stretching head is provided with internal threads, and the stretching head is connected with the extending part of the bolt through threads; the nut driving motor is arranged on the supporting seat, and a gear is arranged at the power output end of the nut driving motor; the supporting seat is hollow inside so as to accommodate the nut sleeve; the nut sleeve is sleeved on the nut, the outer ring of the nut sleeve is meshed with the gear, and the gear is driven to rotate by the nut driving motor, so that the nut sleeve and the nut are driven to synchronously rotate to realize pre-tightening;
the hydraulic module comprises a hydraulic oil tank, an oil pump driving motor, an unloading valve and a quick connector; the hydraulic oil tank is connected with an oil pump, the oil pump is connected with a quick connector through an oil pipe, the quick connector is arranged outside the hydraulic control box and used for connecting the oil pump with the hydraulic cylinder of the stretcher, and an oil pump driving motor is connected with the oil pump and drives the oil pump to operate so as to pump hydraulic oil in the hydraulic oil tank into a high-pressure oil cavity of the hydraulic cylinder; one end of the unloading valve is connected with the stretcher through a quick connector, and the other end of the unloading valve is connected with the hydraulic oil tank and used for enabling high-pressure hydraulic oil to flow back into the hydraulic oil tank after the pre-tightening is finished;
the control module comprises a main control chip, and an oil pump motor driving chip, a nut motor driving chip and a pressure sensor which are connected with the main control chip respectively, wherein the pressure sensor is arranged in an oil pipe between an oil pump and a quick joint, the pressure value in the oil pipe is monitored in real time, the real-time pressure value is fed back to the main control chip, and the main control chip controls the oil pump driving motor and the nut driving motor to work respectively through the oil pump motor driving chip and the nut motor driving chip.
2. The portable intelligent bolt tensioning device according to claim 1, wherein the nut sleeve is mounted in cooperation with the nut, and the outer wall of the nut sleeve is provided with teeth adapted to the gear.
3. The portable intelligent bolt stretching device of claim 1, wherein the unloading valve is connected with the main control chip, and the opening or closing of the unloading valve is controlled by the main control chip.
4. The portable intelligent bolt tensioning device of claim 1, wherein the hydraulic module further comprises a check valve disposed upstream of the unloader valve to prevent backflow of hydraulic oil after the pressurization is stopped.
5. The portable intelligent bolt tensioning device according to claim 1, wherein the hydraulic module further comprises a safety valve, the safety valve is disposed on a branch between the hydraulic oil tank and the oil pump, and when the pressure in the oil pipe exceeds a safety value, the safety valve automatically opens, so that the hydraulic oil returns to a normal pressure and flows back into the hydraulic oil tank.
6. The portable intelligent bolt stretching device according to claim 1, wherein the control module further comprises an operation panel with an LCD display screen and an LCD driving chip, the LCD driving chip is connected with the main control chip, and the LCD driving chip receives an instruction from the main control chip to control the LCD display screen to display a pressure value in the oil pressure chamber.
7. The portable intelligent bolt stretching device as claimed in claim 6, wherein the operation panel further comprises two buttons for controlling the magnitude of the hydraulic pressure and a start-stop button for controlling whether to pressurize.
8. The portable intelligent bolt stretching device according to claim 1, wherein the control module further comprises a remote control module, the main control chip is connected with the remote control module through a Bluetooth module or WIFI, and the execution action of the main control chip is controlled through the remote control module; the remote control module can simultaneously control a plurality of bolt stretching devices to synchronously operate.
9. The portable intelligent bolt stretching device as claimed in claim 1, wherein the control module further comprises an AD conversion chip, and the AD conversion chip is connected with the pressure sensor, converts the pressure signal collected by the pressure sensor into a digital signal, and sends the digital signal to the main control chip.
10. The portable intelligent bolt stretching device as claimed in claim 1, wherein a battery jar is further arranged in the hydraulic control box, and a detachable rechargeable battery is mounted in the battery jar and used for supplying power to the nut driving motor, the oil pump driving motor and the main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823038.9A CN113649799A (en) | 2021-07-21 | 2021-07-21 | Portable intelligent bolt stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110823038.9A CN113649799A (en) | 2021-07-21 | 2021-07-21 | Portable intelligent bolt stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113649799A true CN113649799A (en) | 2021-11-16 |
Family
ID=78477590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110823038.9A Pending CN113649799A (en) | 2021-07-21 | 2021-07-21 | Portable intelligent bolt stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113649799A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110048176A1 (en) * | 2009-08-31 | 2011-03-03 | Frank Hohmann | Hydraulic Bolt Tensioning Device and Method for Tightening Large Bolts by Means of a Hydraulic Bolt Tensioning Device |
| CN202448105U (en) * | 2012-02-22 | 2012-09-26 | 杨照珩 | Bolt stretcher |
| US20150314431A1 (en) * | 2014-05-05 | 2015-11-05 | Frank Hohmann | Tensioning Device for Expanding a Threaded Bolt |
| WO2020120959A1 (en) * | 2018-12-11 | 2020-06-18 | Tentec Limited | Hydraulic tensioning apparatus |
| CN211761253U (en) * | 2020-02-17 | 2020-10-27 | 北京博思伟业机电贸易有限公司 | Intelligent hydraulic bolt stretcher |
| CN213053617U (en) * | 2020-09-11 | 2021-04-27 | 惠州市鑫湖自动化设备有限公司 | Nut aircraft nose for automatic nut machine of angularly adjustable |
-
2021
- 2021-07-21 CN CN202110823038.9A patent/CN113649799A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110048176A1 (en) * | 2009-08-31 | 2011-03-03 | Frank Hohmann | Hydraulic Bolt Tensioning Device and Method for Tightening Large Bolts by Means of a Hydraulic Bolt Tensioning Device |
| CN202448105U (en) * | 2012-02-22 | 2012-09-26 | 杨照珩 | Bolt stretcher |
| US20150314431A1 (en) * | 2014-05-05 | 2015-11-05 | Frank Hohmann | Tensioning Device for Expanding a Threaded Bolt |
| WO2020120959A1 (en) * | 2018-12-11 | 2020-06-18 | Tentec Limited | Hydraulic tensioning apparatus |
| CN211761253U (en) * | 2020-02-17 | 2020-10-27 | 北京博思伟业机电贸易有限公司 | Intelligent hydraulic bolt stretcher |
| CN213053617U (en) * | 2020-09-11 | 2021-04-27 | 惠州市鑫湖自动化设备有限公司 | Nut aircraft nose for automatic nut machine of angularly adjustable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210081589U (en) | Bolt dismounting device | |
| CN113338834A (en) | Automatic pressure regulating polish rod sealing device | |
| CN112720324A (en) | Electro-hydraulic hybrid open spanner | |
| CN110142718A (en) | Bolt disassembly device | |
| CN204754856U (en) | Manual -automatic preventer locking device | |
| CN113649799A (en) | Portable intelligent bolt stretching device | |
| CN217434257U (en) | Bolt tightening device | |
| CN211193673U (en) | Portable hydraulic wrench with adjustable torque | |
| CN2881286Y (en) | High pressure remote control automatic oil ejector | |
| CN2802126Y (en) | Automatic/hand pressure regulator for high pressur pump | |
| CN202348610U (en) | Pump station for hydraulic wrench | |
| CN201867279U (en) | Torque detection and calibration device for wireless telemetering hydraulic power tongs with fast assembly and switchover combination | |
| CN212653360U (en) | Torque wrench | |
| CN2331484Y (en) | Automatic control device for hydraulic power wrench | |
| CN216381332U (en) | Digital protection device of oil pumping unit | |
| CN212131461U (en) | Flow valve with intelligent locator | |
| CN2651742Y (en) | Water supplying pipeline pressure tester | |
| CN201198084Y (en) | Control system for rotating part of torque machine | |
| CN201273432Y (en) | Smooth belt adjustment device for electric motor of pumping unit | |
| CN2267121Y (en) | Torque type hydraulic machine for disassembly- and-assembly of screw nut | |
| CN216447635U (en) | Broken end dismounting device for high-pressure rubber pipe | |
| CN219673196U (en) | Motor dragging compensator | |
| CN220890268U (en) | Clamping mechanism and turbine cylinder fastening force monitoring system | |
| CN108591190A (en) | Convenient for the Full automatic bus lift frame hydraulic system of control mode | |
| CN203670127U (en) | Mechanical mortar pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211116 |