Axial force servo compensation all-in-one machine for engineering support

Abstract

The utility model discloses an axial force servo compensation all-in-one machine for engineering support, which consists of a casing, an industrial-grade integrated control box, a single hydraulic workstation, a storage battery and an oil cylinder with a self-locking module, wherein the industrial-grade integrated control box, the single hydraulic workstation, the storage battery and the oil cylinder are arranged in the casing; wherein a wireless networking communication module and a single chip microcomputer are arranged in the industrial-grade integrated control box, customized development software corresponding to engineering support axial force compensation is loaded in the industrial-grade integrated control box, and the industrial-grade integrated control box and the single-body type hydraulic work station are both connected to the storage battery and take electricity. The oil cylinder is connected with an oil path of the single hydraulic working station and is driven to output supporting axial force to the end part of the steel pipe; the all-in-one machine adopts a single external model of a zero wire and a zero oil pipe, and is controlled by a wireless networking communication module to exchange data with a servo data center of a construction site. The axial force servo compensation all-in-one machine is applied to deep foundation pit excavation and protection operation, peripheral connecting accessories of the all-in-one machine are simplified, the occupied space of an oil pump is saved, the reliability of engineering support axial force servo compensation is greatly improved, and the lateral deformation amplitude of a foundation pit is reduced.

Description

Technical Field

[0001] The utility model relates to an engineering support axial force servo compensation device applied to the diaphragm wall structure in foundation pit construction, and particularly to an axial force servo compensation integrated machine for simplifying the messy connection of electric wires and oil pipes at the construction site. Background Technique

[0002] With the strengthening of the development of urban underground space, especially the deep foundation pit projects of large commercial centers or various venue centers built beside subway lines. In order to strictly prevent and control the deformation of the foundation pit, most construction sites of such projects adopt a plate-type retaining wall (i.e., a collar) combined with a concrete support or a prestressed engineering support structure with multiple horizontal internal supports. However, due to the passive force-bearing characteristics of this support system, it can only provide sufficient support axial force after compressing the support when a certain deformation occurs in the collar structure, and there is even a failure result that the support axial force returns to zero due to the deformation of the collar. It is difficult to meet the control requirements for compensating the axial force distribution of the foundation pit deformation.

[0003] Since the concrete support beam needs to go through processes such as steel bar binding, formwork erection, pouring, and curing, the time required for the support system to form effective strength is relatively long and there is an adverse effect of shrinkage deformation of the concrete beam during curing. To ensure the construction progress and adapt to the cumulative deformation of the collar caused by the foundation pit excavation operation, therefore, a prestressed engineering support system combined with axial force servo compensation is preferably used. Not only can it be constructed quickly and form a support system with the required stiffness in a short time, but also this support system can actively adjust the output axial force to adapt to the deformation of the collar and control the deformation of the collar within a safe target range.

[0004] An existing axial force servo compensation system consists of a software management platform in the control room, a field control host, a servo oil pump, and several groups of assembled steel supports and support heads. Among them, the field control host is connected to several servo oil pumps through local communication, and each servo oil pump is associated with eight support heads through hydraulic oil pipes and operates independently under control to achieve the function of fixed-point axial force compensation. For large deep foundation pits, servo oil pumps are distributed on the ground at the edge of the foundation pit, and under the premise of pre-assembling and connecting the support heads and steel supports in groups, they are hoisted and placed between the collars at different depths of the foundation pit. After being initially fixed by bolt connection, the electric wires and oil pipes are respectively connected to the support heads, and the servo oil pump supplies oil to the support heads through the oil pipes to output adjustable support axial force. For the axial force maintenance and adjustment of multiple steel supports at different excavation depths and different spatial positions at the construction site, the software management platform, the field control host, and the servo oil pump perform step-by-step downward operations on each support head.

[0005] However, this type of axial force servo compensation system has also exposed many objective problems in practical applications. For example, the pump stations are concentrated in large numbers, the hydraulic pipelines are long and inconvenient to install, and the pipelines are easily damaged under the harsh environmental conditions of the construction site. Damage to a single oil circuit or failure of the hydraulic power source of the pump station will affect other oil circuits, resulting in poor system reliability and frequent failures. On the other hand, the function realization of each support head also depends on the access of the electronic control signal. Therefore, similar to the hydraulic oil circuit, the cable part connected to each support head is also vulnerable to damage, and the length of such wiring is uncontrollable, which affects the hoisting and assembly of the steel support and support head between the purlins. Summary of the invention

[0006] The utility model aims to provide an integrated axial force servo compensation machine for engineering support, so as to solve the problems of improving the on-site environment and stabilizing the system operation of the axial force servo compensation of engineering support during deep foundation pit excavation.

[0007] The technical solution for achieving the above-mentioned purpose of the utility model is to provide an all-in-one axial force servo compensation machine for engineering support, which is assembled and connected with the end of a steel pipe and the side wall of a foundation pit, and is characterized in that: the all-in-one machine consists of a casing and an industrial-grade integrated control box, a single-body hydraulic workstation, a battery and an oil cylinder with a self-locking module assembled therein, wherein the industrial-grade integrated control box has a built-in wireless networking communication module and a single-chip microcomputer and is loaded with customized development software corresponding to the axial force compensation of the steel support, and the industrial-grade integrated control box and the single-body hydraulic workstation are both connected to the battery and draw power, the oil cylinder is connected to the oil circuit of the single-body hydraulic workstation and is driven to output the supporting axial force to the end of the steel pipe; the all-in-one machine has a single-body external shape with zero electric wires and zero oil pipes, and is controlled by a wireless networking communication module to exchange data with the servo data center at the construction site.

[0008] Furthermore, the casing is provided with a semi-enclosed box body, a plurality of lifting rings are formed on the top of the box body, a hole is opened on one side of the box body and a hydraulic telescopic shaft rod of the oil cylinder is freely passed through the hole, a shaft connecting plate facing the end of the steel pipe is provided on the side of the box body opposite to the opening, and mounting holes are distributed on the shaft connecting plate.

[0009] Furthermore, the side wall of the box body away from the hole is connected to the shaft connecting plate through a tube column body, and a cross reinforcing rib is formed on the inside of the tube column body, and a rectangular or trapezoidal reinforcing rib plate is distributed on the outside of the tube column body, so that the shaft connecting plate and the box body are strengthened as a whole and assembly space is reserved for the screws of each mounting hole.

[0010] Furthermore, a group of more than two supporting feet are formed on the outside of the bottom side wall of the box body, and the bottom ends of the supporting feet are coplanar with the bottom edges of the shaft connecting plates and keep the box body flat.

[0011] Further, an axial force output push plate is connected to the outer end of the hydraulic telescopic shaft rod of the oil cylinder, and a mechanical locking and retracting module is provided on the hydraulic telescopic shaft rod.

[0012] Further, the monolithic hydraulic workstation is miniaturized and integrated in the machine shell and operates independently to supply oil. It is formed by integrating a high-pressure gear pump, a permanent magnet DC motor, a booster pump, a central valve block, cartridge valves and a fuel tank into one body, and is connected to the oil cylinder to form a closed-loop oil circuit to drive the hydraulic telescopic shaft rod to advance and retreat.

[0013] Further, the industrial integrated control box is provided with a number of input signal interface sockets, output interface sockets and expansion interface sockets. Among them, the input information interface socket is connected to sensors for detecting the pressure and displacement of the oil cylinder to interact information, and the output interface socket is connected to the permanent magnet DC motor of the monolithic hydraulic workstation and interacts control instructions. All connection buses are built into the machine shell of the all-in-one machine.

[0014] Further, a set of common storage batteries is equipped in the machine shell of the all-in-one machine, or one or more sets of emergency storage batteries are additionally configured, and each set of storage batteries is connected to the industrial integrated control box to interact the remaining power and is controlled to switch the power supply.

[0015] Further, the wireless networking communication module is a 4G signal transceiver module, or a Wifi module based on an external switch for networking, or a Lora module, and the operation data of the all-in-one machine of the industrial integrated control box is interacted to the servo data center or a remote cloud terminal through the wireless networking communication module.

[0016] Furthermore, the servo data center receives the operation data fed back by the industrial integrated control boxes of each networked all-in-one machine, and presents the internal oil pressure, battery voltage, support stability state and displacement information of each all-in-one machine in real time in the form of parameter tables and curve graphs through a custom system interface, and runs programs to execute the applied axial force control value, the working pressure of the oil cylinder, the working stroke of the oil cylinder, or receives operation instructions for manual intervention to remotely control the all-in-one machine to output real-time compensation for the axial force of the engineering support.

[0017] The axial force servo compensation integrated machine applying the present utility model has prominent substantial features and remarkable progressiveness compared with the traditional support head mechanism. Its technical effects are manifested as follows: The integrated machine and the servo data center perform data interaction through a wireless networking communication module. At the same time, the oil pump is miniaturized while retaining necessary functional designs and integrated into the housing of the integrated machine, so that it is directly connected to the oil cylinder to achieve single-body oil supply and control the magnitude of axial force output. This greatly simplifies the peripheral connection accessories of the integrated machine, saves the large floor area occupied by multiple oil pumps, and at the same time eliminates on-site accidents such as hydraulic pipeline or cable breakage and quick connector rupture caused by the environment and human misoperation, greatly reducing the shutdown faults caused by hydraulic oil leakage and wire breakage, improving the reliability of steel support axial force servo compensation, and being beneficial to reducing the lateral deformation amplitude of the foundation pit.

[0018] At the same time, the integrated machine combines modern mechatronics integrated automatic control technology, computer information processing technology, and a visualization monitoring system, etc., to continuously monitor the support axial force all-weather, and automatically compensate the support axial force in a timely manner according to the parameter values measured by high-precision sensors to achieve the purpose of controlling the foundation pit deformation. By using the adaptive support system, the real-time monitoring and control of the steel support axial force are realized, solving the technical problems that conventional construction cannot control the demanding deformation requirements, and keeping the project in a controllable and knowable state all the time. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the architecture of an existing axial force servo compensation system for engineering support.

[0020] Figure 2 is a schematic diagram of the architecture of the axial force servo compensation system for engineering support of the present utility model.

[0021] Figure 3 is a schematic diagram of the single-body structure of the axial force servo compensation integrated machine for engineering support of the present utility model.

[0022] Figure 4 is Figure 3 a schematic diagram of the detailed structure of the single-body hydraulic workstation in Detailed Embodiment

[0023] The following will further detail the specific embodiments of the present utility model in conjunction with the accompanying drawings of the embodiments, so that the technical solutions of the present utility model are easier to understand and master, thereby making a clearer definition of the protection scope of the present utility model.

[0024] In view of the many deficiencies of the existing axial force servo compensation system for engineering support, such as messy wiring, easy hydraulic support failure due to pipeline rupture, and poor on-site environment, the designer of the present utility model innovatively proposed an axial force servo compensation integrated machine, which realizes the rapid and safe access of engineering support equipment on the foundation pit excavation site and the high-precision and stable output of axial force compensation through multi-functional integration and without the need for complex connections of pipelines such as oil and electricity.

[0025] As Figure 3 shown, the axial force servo compensation integrated machine for this kind of engineering support of the present utility model is assembled and connected with the end B of the steel pipe and the side wall A of the foundation pit. The general structure of the integrated machine consists of a machine shell 1 and an industrial-grade integrated control box 2, a monolithic hydraulic workstation 3, a storage battery 4, and an oil cylinder 5 with a self-locking module assembled therein. The industrial-grade integrated control box is internally provided with a wireless networking communication module 21 and a single-chip microcomputer 22 and is loaded with customized development software for the axial force compensation of steel supports. The industrial-grade integrated control box 2 and the monolithic hydraulic workstation 3 are both connected to the storage battery 4 to obtain power, and the oil cylinder 5 is connected to the oil circuit of the monolithic hydraulic workstation 3 and is driven to output a support axial force to the end of the steel pipe. The integrated machine has a single-body external shape without any wires and oil pipes, and interacts with the servo data center at the construction site through the wireless networking communication module 21, as Figure 2 shown.

[0026] Generally, dozens (or even hundreds) of axial force servo compensation integrated machines are required to be used at a construction site. From the above general scheme of the integrated machine, it can be seen that the power required to achieve axial force servo compensation is mainly provided by the hydraulic system. Therefore, a set of axial force output hardware devices including components such as an oil tank, an oil pump, an oil circuit, and an oil cylinder is needed. At the same time, in order to achieve refined axial force servo compensation control, the hydraulic system also needs to be electrically controlled; therefore, high-response fine-tuning needs to be carried out in combination with the real-time displacement amplitude of the oil cylinder, the magnitude of the output axial force, and the balance and stability indicators of the entire support system. Both of these parts are miniaturized and integrated into the machine shell, without the need for external oil pipes, large-footprint hydraulic power cabinets and integrated control cabinets, and without external cables, so that the construction site does not become a spider web world.

[0027] From the perspective of further refined structural design, the machine shell 1 is provided with a semi-closed box body. Several lifting rings are formed on the top of the box body, including a three-hole lifting ring 11a and a single-hole lifting ring 11b, which are freely distributed as required. One side of the box body is provided with an opening 12, and the hydraulic telescopic shaft rod 51 of the oil cylinder is adapted to freely pass through it. On the side of the box body opposite to the opening, there is an axial connection plate 13 facing the butt joint of the end B of the steel pipe, and mounting holes 131 are distributed on the axial connection plate 13.

[0028] The side wall of the box body far away from the opening 12 is connected to the shaft connecting plate 13 through a pipe column body 14. A cross-shaped reinforcing rib (not shown) is formed inside the pipe column body 14, and rectangular or trapezoidal reinforcing rib plates 15 are distributively formed on the outside of the pipe column body, so that the shaft connecting plate and the box body are integrally strengthened and an assembly space for passing through screws for each mounting hole is left. On-site construction personnel can use an electric screwdriver with a bent head to conveniently install screws in this assembly space, so that the all-in-one machine and the end of the steel pipe are firmly butted.

[0029] Moreover, a group of more than two support feet 16 are formed on the outside of the bottom side wall of the box body, and the bottom ends of the support feet 16 are coplanar with the bottom edge of the shaft connecting plate 13 to keep the box body placed flat, so as to facilitate the coincidence of the central axes of the steel pipe and the hydraulic telescopic shaft rod when the all-in-one machine and the end of the steel pipe are installed and fixed.

[0030] The outer end of the hydraulic telescopic shaft rod 51 of the above-mentioned oil cylinder 5 is connected with an axial force output push plate 52, and an external thread is provided on the outer wall of the hydraulic telescopic shaft rod and a mechanical locking and retracting module meshing with the external thread is sleeved. When the all-in-one machine is installed and put into use, under hydraulic drive, the axial force output push plate will push outwards to increase the pressure between the end of the steel pipe and the side wall of the foundation pit, realizing the output of axial force servo compensation. In order to prevent accidents of axial force compensation caused by hydraulic failure, using the above-mentioned mechanical locking and retracting module to block and limit the non-movable part of the oil cylinder during the retracting stroke, the axial immediate positioning of the hydraulic telescopic shaft rod can be realized, and the retracting distance is less than 10 mm, so as to cope with the small deformation of the foundation pit wall, and once again clamp the steel pipe and the all-in-one machine and provide a reverse support axial force, thereby curbing the expansion of the accident crisis.

[0031] As Figure 4 shown, the above-mentioned monolithic hydraulic workstation 3 is micro-integrated in the machine shell and operates independently to supply oil. The functions realized refer to the traditional hydraulic workstation, but only the hydraulic oil storage capacity and the overall volume are greatly reduced. It is formed by an electromagnetic valve 31, a permanent magnet DC motor 32, a high-pressure gear pump, a booster pump 33, a central valve block 34, an inserted valve 35 and a fuel tank 36 into one body, and is connected to the oil cylinder 5 to form a closed-loop oil circuit, driving the hydraulic telescopic shaft rod 51 to realize the forward and backward movement. The mounting structure and function realization in terms of hydraulic power can be realized by most existing finished tools, so the detailed illustration and the principle description of the system operation are omitted.

[0032] It should be further noted that the above industrial integrated control box is provided with a number of input signal interface sockets, output interface sockets and expansion interface sockets. Among them, the input information interface socket interacts with sensors for detecting the pressure and displacement of the oil cylinder to exchange information, and the output interface socket is connected to the permanent magnet DC motor of the monolithic hydraulic workstation and exchanges control instructions. All connection buses are built into the casing of the all-in-one machine. Here, each functional sensor is a mature product and is widely used in various existing axial force servo compensation devices to obtain actual parameters of various reaction conditions. Therefore, the description of its model, installation location and detection process is also omitted.

[0033] The above all-in-one machine is equipped with a set of common storage batteries 4 inside the casing. When the battery products are strictly selected and reliably integrated, it can basically meet the power supply requirements for the monolithic hydraulic workstation, the industrial integrated control box and their external communication and interaction. Of course, one or more sets of emergency storage batteries can also be added, and each set of storage batteries is connected to the industrial integrated control box to exchange the remaining power and is controlled to switch the power supply to ensure the continuous stability and reliability of the axial force servo compensation under a long construction period.

[0034] The above wireless networking communication module is a 4G signal transceiver module, or a Wifi module based on an external switch networking, or a Lora module. And the operation data of the all-in-one machine of the industrial integrated control box is interacted to the servo data center or a remote cloud terminal through the wireless networking communication module. The servo data center receives the operation data fed back by the industrial integrated control boxes of each networked all-in-one machine, and presents the internal oil and electricity consumption information, the applied axial force control value, the working pressure of the oil cylinder, and the working stroke of the oil cylinder of each all-in-one machine in real time in the form of parameter tables and curve graphs through a customized system interface, and receives operation instructions for manual intervention to remotely control the all-in-one machine to output axial force compensation for the steel pipe used for support. The actual networked control is relatively mature in software joint control under the current popular implementation of external connection of oil pipes and cables, and it is not the key point protected by this application. Therefore, the description of its functional principle is omitted. However, each of the on-site discretely distributed axial force servo compensation all-in-one machines is wirelessly locally networked and connected to the servo data center upwards, without the additional concerns of complex wiring and protecting the integrity of the lines.

[0035] In summary, as described above for the structure of the axial force servo compensation integrated machine for engineering support, its assembly and function realization in the scenario application, compared with the traditional support head mechanism, it has outstanding substantial features and remarkable progressiveness. The specific technical effects are as follows: The integrated machine and the servo data center perform data interaction through a wireless networking communication module. At the same time, the oil pump is miniaturized while retaining the necessary functional design and integrated into the machine shell of the integrated machine, so that it is directly connected to the oil cylinder and realizes single-body oil supply and controls the magnitude of the axial force output. This greatly simplifies the peripheral connection accessories of the integrated machine, saves the large floor area of multiple oil pumps, and at the same time eliminates on-site accidents such as hydraulic pipeline or cable breakage and quick connector rupture caused by the environment and human misoperation, greatly reducing the shutdown faults caused by hydraulic oil leakage and wire breakage, improving the reliability of the steel support axial force servo compensation, and being beneficial to reducing the lateral deformation amplitude of the foundation pit.

[0036] At the same time, the integrated machine combines modern mechatronics automatic control technology, computer information processing technology, and visual monitoring system, etc., to continuously monitor the support axial force all-weather, and automatically compensate the support axial force in a timely manner according to the parameter values measured by high-precision sensors to achieve the purpose of controlling the foundation pit deformation. The use of an adaptive support system realizes the real-time monitoring and control of the steel support axial force, solves the technical problem that conventional construction cannot control the demanding deformation requirements, and keeps the project in a controllable and knowable state at all times. And it is easy to realize the networked management of axial force and displacement data based on the Internet of Things technology, unify the management of the axial force and displacement data of the steel support, systematically analyze the safety of the construction project, provide all-round all-weather management, ensure the rapid display of project risks, and conduct timely emergency treatment to prevent problems before they occur.

[0037] In addition to the above embodiments, the present invention can also have other implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An integrated axial force servo compensation machine for engineering support, assembled and connected with the end of a steel pipe and the side wall of a foundation pit, characterized in that: The all-in-one machine consists of a casing and an industrial-grade integrated control box assembled therein, a single-body hydraulic workstation, a battery and a cylinder with a self-locking module, wherein the industrial-grade integrated control box has a built-in wireless networking communication module and a single-chip microcomputer and is loaded with customized development software corresponding to the steel support axial force compensation, and the industrial-grade integrated control box and the single-body hydraulic workstation are both connected to the battery and draw power, the cylinder is connected to the oil circuit of the single-body hydraulic workstation and is driven to output the supporting axial force to the end of the steel pipe; the all-in-one machine has a single-body external shape with zero wires and zero oil pipes, and is controlled by a wireless networking communication module to exchange data with the servo data center at the construction site.

2. The axial force servo compensation integrated machine for engineering support according to claim 1 is characterized in that: The casing is provided with a semi-enclosed box body, a plurality of lifting rings are formed on the top of the box body, a hole is opened on one side of the box body and a hydraulic telescopic shaft rod of the oil cylinder can freely pass through the hole, a shaft connecting plate facing the end of the steel pipe is provided on the side of the box body opposite to the opening, and mounting holes are distributed on the shaft connecting plate.

3. The axial force servo compensation integrated machine for engineering support according to claim 2 is characterized in that: The side wall of the box body away from the hole is connected to the shaft connecting plate through a tube column body, and a cross reinforcing rib is formed on the inner side of the tube column body, and a rectangular or trapezoidal reinforcing rib plate is distributed on the outer side of the tube column body, so that the shaft connecting plate and the box body are strengthened as a whole and assembly space is reserved for the screws of each mounting hole.

4. The axial force servo compensation integrated machine for engineering support according to claim 2 is characterized in that: A group of more than two supporting feet are formed on the outside of the bottom side wall of the box body, and the bottom ends of the supporting feet are coplanar with the bottom edges of the shaft connecting plates and keep the box body flat.

5. The axial force servo compensation integrated machine for engineering support according to claim 1, characterized in that: The outer end of the hydraulic telescopic shaft of the oil cylinder is connected to an axial force output push plate, and a mechanical locking and retreating module is arranged on the hydraulic telescopic shaft.

6. The axial force servo compensation integrated machine for engineering support according to claim 1, characterized in that: The single-body hydraulic workstation is micro-integrated in the casing and operates and supplies oil independently. It is formed into one body by a high-pressure gear pump, a permanent magnet DC motor, a booster pump, a central valve block, a cartridge valve and an oil tank, and is connected to the oil cylinder to form a closed-loop oil circuit to drive the hydraulic telescopic shaft to advance and retreat.

7. The axial force servo compensation integrated machine for engineering support according to claim 1 is characterized in that: The industrial-grade integrated control box is provided with a plurality of input signal interface sockets, output interface sockets and expansion interface sockets, wherein the input information interface socket is connected to the sensor for detecting the pressure and displacement of the oil cylinder to exchange information, and the output interface socket is connected to the permanent magnet DC motor of the single-body hydraulic workstation to exchange control instructions, and all connection buses are built into the casing of the all-in-one machine.

8. The axial force servo compensation integrated machine for engineering support according to claim 1, characterized in that: The all-in-one machine is equipped with a group of common batteries in the casing, or one or more emergency batteries are additionally equipped, and each group of batteries is connected to an industrial-grade integrated control box to exchange power surplus and switch energy supply in a controlled manner.

9. The axial force servo compensation integrated machine for engineering support according to claim 1, characterized in that: The wireless networking communication module is a 4G signal transceiver module, or a Wifi module based on an external switch network, or a Lora module, and the all-in-one operation data of the industrial-grade integrated control box is interacted with the server data center or the remote cloud terminal through the wireless networking communication module.

Images