CN209974198U - Supporting and locking mechanism of foundation pit steel support axial force servo system - Google Patents
Supporting and locking mechanism of foundation pit steel support axial force servo system Download PDFInfo
- Publication number
- CN209974198U CN209974198U CN201920315108.8U CN201920315108U CN209974198U CN 209974198 U CN209974198 U CN 209974198U CN 201920315108 U CN201920315108 U CN 201920315108U CN 209974198 U CN209974198 U CN 209974198U
- Authority
- CN
- China
- Prior art keywords
- motor
- supporting
- jack
- locking gear
- plate
- 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.)
- Active
Links
Images
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The utility model discloses a foundation ditch steel shotcrete axle power servo's support locking mechanism, including shell body and roof support, the vertical one of them outside portion that sets up at the shell body of roof support, be provided with the jack in the shell body, the jack includes the cylinder, cylinder fixed mounting is in the shell body, can be provided with the piston rod around the activity in the cylinder, the one end and the roof support fixed connection of piston rod, coaxial spiro union has first locking gear on the piston rod, the meshing is connected with second locking gear on the first locking gear, be connected with a motor on the second locking gear, be provided with the mounting bracket that is used for installing the motor on the cylinder, motor movably sets up on the mounting bracket, still be provided with control system and power unit in the shell body, power unit and motor are connected with the control system electricity respectively, be provided with displacement sensor on the mounting bracket, be provided with pressure sensor on the jack. The pressure maintaining device has the advantage that the pressure maintaining problem after the jack loses pressure due to great reduction of temperature can be effectively solved.
Description
Technical Field
The utility model relates to a foundation ditch supports axial force servo, especially relates to a foundation ditch steel shotcrete axial force servo's support locking mechanism.
Background
With the acceleration of the urbanization process, the engineering construction of the deep foundation pit is frequent, a large number of existing building structures are usually present around the urban foundation pit, and the surrounding soil layer is deformed along with the deformation of the building structure caused by the excavation of the foundation pit, so that the safe use of the surrounding building structures is influenced. In order to reduce the influence, the excavation of the foundation pit needs to construct an enclosing structure such as an underground diaphragm wall and the like, and a supporting system is also required to be synchronously erected during excavation so as to reduce the deformation of the enclosing structure.
Present foundation ditch engineering braced system is except that the first way adopts the concrete support, all the other steel shotcrete that all adopt is taken the lead, steel shotcrete axle power is mainly applyed through setting up the hydraulic jack at the end, at present in order to realize the automatic compensation of supporting axle power, supporting axle power servo has been adopted in a large number, supporting axle power servo mostly maintains pressure through installation mechanical lock, the piston rod can not retract when guaranteeing the decompression, but the mechanical lock that adopts at present stage, though can realize the pressurize function under the normal use condition, but also there is obvious not enough: when great reduction appears in the temperature in the foundation ditch, the shrinkage can take place for the steel shotcrete, needs control the ejector pin extension that makes the jack this moment, can lead to mechanical locking plate and jack to have certain clearance like this, and the function of locking a position is inefficacy, and then makes the pressurize function inefficacy of mechanical lock.
Disclosure of Invention
The utility model aims to solve the technical problem that a foundation ditch steel shotcrete axle power servo system's support is locked a mechanism and is locked a method is provided, should support and lock a mechanism and lock a method and can be according to the pressure automatic adjustment of jack and lock the interval between the mechanism, can effectively solve the pressurize problem after the jack decompression when great reduction appears because of the temperature.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
a supporting and locking mechanism of a foundation pit steel supporting axial force servo system comprises an outer shell and a supporting top plate, wherein the supporting top plate is vertically arranged at one outer side of the outer shell, a jack used for enabling the supporting top plate to be ejected out to abut against a wall surface of a foundation pit is arranged in the outer shell, the jack comprises a cylinder barrel, the cylinder barrel is fixedly arranged in the outer shell, a piston rod is movably arranged in the cylinder barrel in a front-back mode, one end of the piston rod extends out of the cylinder barrel and is fixedly connected with the supporting top plate, a first locking gear is coaxially screwed on the piston rod and is positioned outside the cylinder barrel, a second locking gear is meshed and connected with the first locking gear, a motor is connected onto the second locking gear, and an output shaft of the motor is coaxially and fixedly connected with the second locking gear, the cylinder barrel is provided with a mounting rack for mounting the motor, the motor is movably arranged on the mounting rack, the moving direction of the motor is consistent with the moving direction of the supporting top plate, a control system and a power mechanism for driving the jack to eject are also arranged in the outer shell, the power mechanism and the motor are respectively electrically connected with the control system, the mounting frame is provided with a displacement sensor for monitoring the position of the first locking gear, the jack is provided with a pressure sensor for monitoring the ejection pressure in the jack, the displacement sensor and the pressure sensor are respectively electrically connected with the control system, the control system controls the power mechanism and the motor to act according to the displacement value and the pressure value monitored by the displacement sensor and the pressure sensor.
The mounting bracket comprises a horizontally arranged mounting plate, one end of the mounting plate is connected with a supporting plate which is vertical to the mounting plate, the lower end of the supporting plate is fixedly arranged on the cylinder barrel, the upper end of the supporting plate is connected to the side part of the mounting plate, and the motor can be movably arranged on the mounting plate along with the movement direction of the supporting top plate. The backup pad is used for making the mounting bracket steady mounting on the cylinder, and the mounting panel is used for providing supporting role for the installation of motor.
The mounting panel on the interval be provided with two linear bearing, linear bearing on but linear motion ground be provided with the guide bar, two the front end of guide bar be connected through a connecting plate, the connecting plate parallel interval set up the roof after, the motor install the rear end face of connecting plate, second lock position gear install the front end face of connecting plate, the output shaft of motor pass the connecting plate with second lock position gear fixed connection. The connecting plate is used for providing a stable installation location for the installation of motor, realizes through the cooperation of linear bearing and guide bar that the motor is linear motion with the roof that supports together, simple structure, and it is stable to use, and the guide bar plays the holding power that shares the output shaft of motor and bore simultaneously.
The power mechanism is a hydraulic station, the hydraulic station is electrically connected with the control system, an oil inlet and an oil outlet are arranged on the jack, and the oil inlet and the oil outlet are respectively connected with the hydraulic station through oil pipes. The power mechanism is simple and low in cost.
The control system comprises a data receiving module, a data comparing module and an action instruction sending module, wherein the data receiving module is used for receiving the displacement sensor and the displacement value and the pressure value monitored by the pressure sensor and sending the displacement value and the pressure value to the data comparing module, and the data comparing module outputs an action instruction signal for indicating the starting or stopping of the power mechanism and the motor according to a comparison result and is used for indicating the power mechanism and the motor to make corresponding actions through the action instruction sending module.
Compared with the prior art, the utility model has the advantages of: through the mutual cooperation of the pressure sensor, the displacement sensor and the control system, the jack can be automatically controlled to be ejected out according to the real-time pressure of the jack, and meanwhile, the locking interval between the first locking gear and the cylinder barrel is automatically adjusted, so that the pressure maintaining problem after the jack is decompressed due to the fact that the temperature is greatly reduced is effectively solved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a front portion of the outer casing of the present invention with a portion removed;
FIG. 3 is a schematic structural view of the hydraulic station and the jack in a matching connection;
FIG. 4 is a schematic structural view of the present invention showing the cooperative connection between the jack and the top support plate;
FIG. 5 is a schematic structural view of the middle locking mechanism of the present invention installed on a jack;
fig. 6 is a schematic view of a partial cross-sectional structure of the jack of the present invention;
fig. 7 is a schematic cross-sectional structural view of the present invention in three states of initial, ejection unlocked and ejection locked;
fig. 8 is a schematic diagram of the control system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 8, a supporting and locking mechanism of a foundation pit steel supporting axial force servo system comprises an outer shell 1 and a supporting top plate 2, wherein the supporting top plate 2 is vertically arranged at one outer side part of the outer shell 1, a jack 3 for enabling the supporting top plate 2 to be ejected out to abut against a wall surface of a foundation pit is arranged in the outer shell 1, the jack 3 comprises a cylinder barrel 31, the cylinder barrel 31 is fixedly arranged in the outer shell 1, a piston rod 32 is movably arranged in the cylinder barrel 31 in a front-back manner, one end of the piston rod 32 extends out of the cylinder barrel 31 and is fixedly connected with the supporting top plate 2, a first locking gear 4 is coaxially screwed on the piston rod 32, the first locking gear 4 is positioned outside the cylinder barrel 31, a second locking gear 5 is engaged and connected on the first locking gear 4, a motor 6 is connected on the second locking gear 5, an output shaft of the motor 6 is coaxially and fixedly connected with the second locking gear 5, a mounting, the motor 6 is movably arranged on the mounting frame, the moving direction of the motor 6 is consistent with the moving direction of the supporting top plate 2, a control system (not shown in the figure) and a power mechanism used for driving the jack 3 to eject are further arranged in the outer shell 1, the power mechanism and the motor 6 are respectively electrically connected with the control system, a displacement sensor 41 used for monitoring the position of the first locking gear 4 is arranged on the mounting frame, a pressure sensor (not shown in the figure) used for monitoring the ejecting pressure in the jack 3 is arranged on the jack 3, the displacement sensor 41 and the pressure sensor are respectively electrically connected with the control system, and the control system controls the power mechanism and the motor 6 to act according to the displacement value and the pressure value monitored by the displacement sensor 41 and the pressure sensor.
In this embodiment, the mounting bracket includes a horizontally disposed mounting plate 71, a support plate 72 is connected to one end of the mounting plate 71 to be perpendicular to the mounting plate 71, the lower end of the support plate 72 is fixedly mounted on the cylinder 31, the upper end of the support plate 72 is connected to the side of the mounting plate 71, and the motor 6 is movably disposed on the mounting plate 71 along the moving direction of the top support plate 2. The support plate 72 is used to stabilize the mounting on the cylinder 31, and the mounting plate 71 is used to provide support for the mounting of the motor 6.
In this embodiment, two linear bearings 711 are disposed at intervals on the mounting plate 71, guide rods 712 are linearly movably disposed on the linear bearings 711, front ends of the two guide rods 712 are connected through a connecting plate 713, the connecting plate 713 is disposed in parallel and at intervals behind the supporting top plate 2, the motor 6 is mounted on a rear end face of the connecting plate 713, the second capture gear 5 is mounted on a front end face of the connecting plate 713, and an output shaft of the motor 6 passes through the connecting plate 713 and is fixedly connected with the first capture gear 4. The connecting plate 713 is used for providing stable installation and positioning for installation of the motor 6, the motor 6 and the supporting top plate 2 do linear motion through the matching of the linear bearing 711 and the guide rod 712, the structure is simple, the use is stable, and meanwhile the guide rod 712 shares the supporting force born by the output shaft of the motor 6.
In this embodiment, the power mechanism is a hydraulic station 8, the hydraulic station 8 is electrically connected to the control system, the jack 3 is provided with an oil inlet 301 and an oil outlet 302, and the oil inlet 301 and the oil outlet 302 are respectively connected to the hydraulic station 8 through an oil pipe 45. The power mechanism is simple and low in cost.
In this specific embodiment, the control system includes a data receiving module, a data comparing module, and an action instruction transmitting module, where the data receiving module is configured to receive the displacement value and the pressure value monitored by the displacement sensor 41 and the pressure sensor, and transmit the displacement value and the pressure value to the data comparing module, and the data comparing module outputs an action instruction signal for instructing the power mechanism and the motor 6 to start or stop according to the comparison result, and is configured to instruct the power mechanism and the motor 6 to perform corresponding actions through the action instruction transmitting module.
The specific locking method of the supporting locking mechanism comprises the following steps:
(1) setting a P in the control systemCritical point of，PCritical point ofThe critical ejection pressure value of the jack 3;
(2) setting a delta in a control systemCritical point of，ΔCritical point ofThe critical distance between the rear end face of the first lock gear 4 and the front end face of the cylinder 31;
(3) the ejection pressure value P in the jack 3 is monitored in real time through a pressure sensor, and the ejection pressure value P is transmitted to a control system, and when the monitored pressure value P is less than PCritical point ofWhen the steel support retracts, the control system controls the power mechanism to drive the piston rod 32 of the jack 3 to eject outwards, and when the monitored P is larger than or equal to PCritical point ofWhen the jack 3 is pushed out, the distance delta between the rear end face of the first lock gear 4 and the front end face of the cylinder barrel 31 is monitored through the displacement sensor 41, and the distance delta is transmitted to the control system, so that delta is larger than deltaCritical point of；
(4) The control system controls the motor 6 to rotate, the second locking gear 5 rotates simultaneously and then, and drives the first locking gear 4 to lean againstThe direction close to the front end face of the cylinder barrel 31 makes linear movement, the distance delta between the rear end face of the first lock gear 4 and the front end face of the cylinder barrel 31 is monitored in real time through the displacement sensor 41, the distance delta is transmitted to the control system, and when the distance delta is detected to be deltaCritical point ofAnd when the locking is finished, the control system controls the motor 6 to stop rotating.
Critical ejection pressure value P of jack 3Critical point ofThe method can be obtained by calculation according to the characteristics of the whole foundation pit engineering.
Claims (5)
1. A supporting and locking mechanism of a foundation pit steel supporting axial force servo system is characterized by comprising an outer shell and a supporting top plate, wherein the supporting top plate is vertically arranged at one outer side of the outer shell, a jack used for enabling the supporting top plate to be ejected out to abut against a wall surface of a foundation pit is arranged in the outer shell, the jack comprises a cylinder barrel, the cylinder barrel is fixedly arranged in the outer shell, a piston rod is movably arranged in the cylinder barrel in a front-back mode, one end of the piston rod extends out of the cylinder barrel and is fixedly connected with the supporting top plate, a first locking gear is coaxially screwed on the piston rod and is positioned outside the cylinder barrel, a second locking gear is meshed and connected with the first locking gear, a motor is connected onto the second locking gear, and an output shaft of the motor is coaxially and fixedly connected with the second locking gear, the cylinder barrel is provided with a mounting rack for mounting the motor, the motor is movably arranged on the mounting rack, the moving direction of the motor is consistent with the moving direction of the supporting top plate, a control system and a power mechanism for driving the jack to eject are also arranged in the outer shell, the power mechanism and the motor are respectively electrically connected with the control system, the mounting frame is provided with a displacement sensor for monitoring the position of the first locking gear, the jack is provided with a pressure sensor for monitoring the ejection pressure in the jack, the displacement sensor and the pressure sensor are respectively electrically connected with the control system, the control system controls the power mechanism and the motor to act according to the displacement value and the pressure value monitored by the displacement sensor and the pressure sensor.
2. The supporting and locking mechanism of the foundation pit steel supporting axial force servo system as claimed in claim 1, wherein the mounting frame comprises a horizontally arranged mounting plate, one end of the mounting plate is connected with a supporting plate perpendicular to the mounting plate, the lower end of the supporting plate is fixedly mounted on the cylinder barrel, the upper end of the supporting plate is connected to the side of the mounting plate, and the motor is movably arranged on the mounting plate along with the movement direction of the supporting top plate.
3. The supporting and locking mechanism of an axial force servo system for a steel support of a foundation pit as claimed in claim 2, wherein two linear bearings are arranged on the mounting plate at intervals, guide rods are linearly movably arranged on the linear bearings, front ends of the two guide rods are connected through a connecting plate, the connecting plate is arranged behind the supporting top plate in parallel at intervals, the motor is arranged on a rear end face of the connecting plate, the second locking gear is arranged on a front end face of the connecting plate, and an output shaft of the motor passes through the connecting plate and is fixedly connected with the second locking gear.
4. The supporting and locking mechanism of the foundation pit steel supporting axial force servo system according to claim 1, wherein the power mechanism is a hydraulic station, the hydraulic station is electrically connected with the control system, the jack is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively connected with the hydraulic station through an oil pipe.
5. The supporting and locking mechanism of the foundation pit steel supporting axial force servo system according to claim 1, wherein the control system comprises a data receiving module, a data comparing module and an action command transmitting module, the data receiving module is configured to receive displacement values and pressure values monitored by the displacement sensor and the pressure sensor and transmit the displacement values and the pressure values to the data comparing module, the data comparing module outputs an action command signal for instructing the power mechanism and the motor to start or stop according to a comparison result, and the action command transmitting module is configured to instruct the power mechanism and the motor to perform corresponding actions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315108.8U CN209974198U (en) | 2019-03-13 | 2019-03-13 | Supporting and locking mechanism of foundation pit steel support axial force servo system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315108.8U CN209974198U (en) | 2019-03-13 | 2019-03-13 | Supporting and locking mechanism of foundation pit steel support axial force servo system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209974198U true CN209974198U (en) | 2020-01-21 |
Family
ID=69254444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920315108.8U Active CN209974198U (en) | 2019-03-13 | 2019-03-13 | Supporting and locking mechanism of foundation pit steel support axial force servo system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209974198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879196A (en) * | 2019-03-13 | 2019-06-14 | 宁波寰禹智能科技有限公司 | A kind of the support locking mechanism and lock-bit method of axial force of foundation pit steel support servo-system |
-
2019
- 2019-03-13 CN CN201920315108.8U patent/CN209974198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879196A (en) * | 2019-03-13 | 2019-06-14 | 宁波寰禹智能科技有限公司 | A kind of the support locking mechanism and lock-bit method of axial force of foundation pit steel support servo-system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209974198U (en) | Supporting and locking mechanism of foundation pit steel support axial force servo system | |
| CN111458214B (en) | True triaxial loading test device for large-size frozen soil | |
| CN109879196A (en) | A kind of the support locking mechanism and lock-bit method of axial force of foundation pit steel support servo-system | |
| CN111677457B (en) | Drilling arm | |
| CN113653108A (en) | Foundation pit supporting structure internal force monitoring device | |
| CN110039650A (en) | A kind of nut locking device for tubular piles stretching | |
| CN114134900A (en) | Concrete support servo system and construction monitoring and control method thereof | |
| CN101817032A (en) | Spool material retractable feeder | |
| CN102444290B (en) | Automatic tension control system and method thereof | |
| CN114673180B (en) | Geotechnical engineering side slope support of high stability | |
| CN108194075B (en) | Coupling sensing device for operation under pressure | |
| CN116067803B (en) | True three-way dynamic and static combined shearing experimental equipment and method under high-temperature high-permeability chemical coupling | |
| CN111660277A (en) | Bolt mounting arm | |
| CN109898517A (en) | A kind of deep pit support support system and construction method | |
| CN109898518B (en) | Deep foundation pit supporting system | |
| CN214573989U (en) | Steel support shaft force self-locking device | |
| CN109896483A (en) | A kind of axial force of foundation pit steel support compensation device and its application method | |
| CN216207260U (en) | River bottom tunnel infiltration detection device | |
| WO2023109054A1 (en) | Shield tunnelling test platform suitable for multiple large mechanical occasions and use method of platform | |
| CN112252380A (en) | Novel automatic monitoring device and monitoring method for steel support axial force | |
| CN109899075B (en) | Temporary supporting structure for shield tunnel construction stage and construction method thereof | |
| CN209799971U (en) | temporary supporting structure for shield tunnel construction stage | |
| CN111577707A (en) | Follow-up self-locking hydraulic system | |
| CN115012819A (en) | Rubber bag hydraulic shock excitation direct-pushing type drilling detection device | |
| CN112761163A (en) | Steel support axial force self-locking device and automatic control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |