An assembled prestressed steel support servo system

Abstract

This invention relates to a prefabricated prestressed steel support servo system. The prefabricated prestressed steel support servo system includes: a servo control cabinet and a prestressing device; the servo control cabinet is fixed to a concrete waler; one end of the prestressing device is connected to the steel support, and the other end rests on secondary grouting, which serves to level and fill gaps. Compared with existing technologies, the prefabricated prestressed steel support servo system of this invention integrates the jack and the steel support structure, with an adjustable and telescopic mechanism and a self-locking function, avoiding cumbersome and unsafe procedures such as manual pressurization and manual handling of the jack; the servo control cabinet is made assemblable, miniaturized and lightweight on construction sites, and convenient for manual handling.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a prefabricated prestressed steel support servo system. Background Technology

[0002] To ensure the safety of underground structure construction and the surrounding environment of the foundation pit, it is necessary to adopt support, reinforcement, and protection measures for the sidewalls and surrounding environment of the foundation pit. Whether it is a deep foundation pit project for high-rise buildings or subway construction, since most of them are excavated in urban areas, there are usually various structures such as traffic arteries, existing buildings, or pipelines around the foundation pit. In order to ensure the safety of the surrounding environment of the foundation pit, as well as to save construction time and costs, steel structure internal support systems are widely used.

[0003] In existing technologies, the application and re-application of prestressing for steel supports in foundation pits still require manual handling of jacks and manual pressure application. Manual operation is not only inefficient and inaccurate, but also poses certain safety hazards in the confined space at the edge of deep foundation pits. When prestress is lost, it is impossible to quickly replenish the prestress, resulting in poor timeliness. After the prestress is applied, it is necessary to use a conversion structure to maintain pressure, making it difficult to control the loss of prestress.

[0004] In addition, the existing prestressed servo system has a bulky control cabinet that requires mechanical handling, making construction inconvenient; it also requires connection to the mains power to ensure continuous power supply, which is unsafe, and there is a serious safety hazard if leakage occurs near the steel support. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a prefabricated prestressed steel support servo system. The jack and the steel support structure are integrated, the mechanism is telescopic and adjustable, and has a self-locking function, avoiding cumbersome and unsafe procedures such as manual pressurization and manual handling of the jack; the servo control cabinet is made assemblable, miniaturized and lightweight on the construction site, and convenient for manual handling.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] The purpose of this invention is to provide a prefabricated prestressed steel support servo system, comprising: a servo control cabinet and a prestressing device; the servo control cabinet is fixed to a concrete waler; one end of the prestressing device is connected to the steel support, and the other end rests on secondary grouting, which serves to level and fill gaps; the prestressing device includes a jack connector, a jack, a movable head, a pad, a base plate, and a self-locking steel wedge; the jack and the jack connector are connected by bolts; one end of the movable head is connected to the pad, and the other end is inserted into the opening of the jack connector; the self-locking steel wedge is located in the gap between the movable head and the jack connector; the pad and the base plate are connected by bolts.

[0008] Furthermore, the movable head has a beveled surface in the middle.

[0009] Furthermore, the jack connector includes a jack groove; the jack is placed into the jack groove of the jack connector; the upper part of the jack connector opening is provided with a leveling bolt, and by tightening the leveling bolt downwards, the level of the pad and the movable head can be adjusted to prevent the pad from falling.

[0010] Furthermore, the jack includes a connecting plate, threaded holes, countersunk holes, a telescopic rod, and a cylinder body; the jack head has a connecting plate, threaded holes are opened on both sides and the top of the connecting plate, a countersunk hole is opened in the middle of the connecting plate, and it is connected to the telescopic rod of the jack by bolts, and the telescopic rod of the jack is connected to the cylinder body.

[0011] Furthermore, the servo control cabinet is fixed to the concrete waler using expansion bolts.

[0012] Furthermore, the prestressing device also includes a filler plate; the filler plate is disposed in the gap between the pad block and the connecting plate of the jack.

[0013] Furthermore, the prestressing device also includes small plates; the pad and the connecting plate of the jack are connected through the small plates.

[0014] Furthermore, the servo control cabinet includes a solar panel, a circuit control cabinet, a hydraulic control cabinet, and a hydraulic power cabinet; the solar panel is a flexible panel and is attached to the top of the circuit control cabinet; the circuit control cabinet, the hydraulic control cabinet, and the hydraulic power cabinet are connected by simple bolts; the circuit control cabinet contains a circuit control module; the hydraulic control cabinet contains a hydraulic control module; the hydraulic power cabinet contains a hydraulic power module; the circuit control module, the hydraulic control module, and the hydraulic power module are connected by simple circuit connectors and quick-connect oil pipes.

[0015] Furthermore, the circuit control module within the circuit control cabinet includes: a battery, a data acquisition and transmission device, a contactor, a relay, and a switch. The battery is connected to a solar panel to power the entire system. The data acquisition and transmission device is mainly connected to the pressure transmitter of the hydraulic control module within the hydraulic control cabinet to read pressure data and send it to the server. The device has low power consumption and can be configured to acquire and transmit data at set time intervals. The contactor connects to the mechanical pressure gauge with electrical contacts of the hydraulic control module within the hydraulic control cabinet and the hydraulic pump of the hydraulic power module within the hydraulic power cabinet, enabling low-power equipment to control high-power equipment. The relay connects to the mechanical pressure gauge with electrical contacts of the hydraulic control module within the hydraulic control cabinet, controlling the hydraulic pump switch of the hydraulic power module within the hydraulic power cabinet based on the pressure range, thus achieving automatic pressure compensation. The switch components are used for automatic pressure compensation and pressurization functions.

[0016] Furthermore, the hydraulic control module within the hydraulic control cabinet includes a pressure holding valve, an electrical contact mechanical pressure gauge, a pressure transmitter, and a quick-connect fitting for the pressure holding valve. The electrical contact mechanical pressure gauge can be set with upper and lower pressure limits to achieve automatic compensation. The pressure transmitter measures the jack pressure and converts it into an electrical signal, which is then transmitted to the data acquisition and transmission equipment of the circuit control module within the circuit control cabinet. The pressure holding valve can lock the pressure in one direction and can be pressurized at any time. The pressure holding valve is equipped with a quick-connect fitting, which is connected to the hydraulic pump and jack of the hydraulic power module within the hydraulic power cabinet via an oil pipe. The pressure holding valve switch can open or close the one-way pressure holding function.

[0017] Furthermore, the hydraulic power module installed in the hydraulic power cabinet includes a hydraulic pump and a solenoid valve; the solenoid valve is equipped with a number of quick-connect interfaces, which are connected to the pressure holding valve of the hydraulic control module installed in the hydraulic control cabinet through oil pipes to pressurize the jack, and the opening and closing of each oil outlet of the solenoid valve is controlled by the circuit control cabinet; the hydraulic pump adopts a low-voltage DC motor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The prefabricated prestressed steel support servo system provided by the present invention integrates the jack and the steel support structure. The mechanism is telescopic and adjustable and has a self-locking function, avoiding cumbersome and unsafe procedures such as manual pressurization and manual handling of the jack.

[0020] 2. The prefabricated prestressed steel support servo system provided by this invention adopts a prefabricated servo control cabinet. Each module is independent of each other, making installation and transportation convenient. The servo control cabinet is divided into a circuit control cabinet, a hydraulic control cabinet, and a hydraulic power cabinet. The three are made assemblable and can be connected by simple bolts. It is miniaturized and lightweight on the construction site, and is convenient for manual handling. The servo control cabinet uses low-power components, mechanical pressure compensation, and low power consumption. It is powered by solar batteries to ensure power safety and power sustainability.

[0021] 3. The prefabricated prestressed steel support servo system provided by the present invention adopts a retained jack, which integrates the jack and the support rod into one unit, making prestressing application and unloading convenient and avoiding frequent manual handling during pressurization / depressurization.

[0022] 4. The prefabricated prestressed steel support servo system provided by this invention uses a low-voltage DC motor as its power unit and is powered by solar energy, which is environmentally friendly and economical, and can ensure the safety of electricity use on the construction site. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the prefabricated prestressed steel support servo system provided in this technical solution.

[0024] Figure 2 A schematic diagram of the prestressing device of the prefabricated prestressed steel support servo system provided in this technical solution.

[0025] Figure 3 for Figure 2 Section 1-1.

[0026] Figure 4 for Figure 2 Section 2-2.

[0027] Figure 5 The front view of the filler plate of the prefabricated prestressed steel support servo system provided in this technical solution.

[0028] Figure 6 A top view of the filler plate of the prefabricated prestressed steel support servo system provided in this technical solution.

[0029] Figure 7 A top view of the movable head of the prefabricated prestressed steel support servo system provided for this technical solution.

[0030] Figure 8 The front view of the movable head of the prefabricated prestressed steel support servo system provided in this technical solution.

[0031] Figure 9 Three views of the pad of the prefabricated prestressed steel support servo system provided in this technical solution.

[0032] Figure 10 A top view of the jack of the prefabricated prestressed steel support servo system provided in this technical solution.

[0033] Figure 11 for Figure 10 Section 1-1.

[0034] Figure 12 for Figure 10 Section 2-2.

[0035] Figure 13 Three views of the connecting plate of the prefabricated prestressed steel support servo system provided for this technical solution.

[0036] Figure 14 A schematic diagram of the jack joint of the prefabricated prestressed steel support servo system provided in this technical solution.

[0037] Figure 15 for Figure 14 Section 1-1.

[0038] Figure 16 for Figure 14 Section 2-2.

[0039] Figure 17 A schematic diagram of the servo control cabinet of the prefabricated prestressed steel support servo system provided in this technical solution.

[0040] Figure 18 A three-dimensional structural diagram of the circuit control cabinet of the prefabricated prestressed steel support servo system provided for this technical solution.

[0041] Figure 19 A three-dimensional structural diagram of the hydraulic control cabinet of the prefabricated prestressed steel support servo system provided for this technical solution.

[0042] Figure 20 A three-dimensional structural diagram of the hydraulic power cabinet of the prefabricated prestressed steel support servo system provided for this technical solution.

[0043] The numbers in the diagram are as follows:

[0044] 1. Servo control cabinet; 11. Solar panel; 12. Circuit control cabinet; 121. Battery; 122. Data acquisition and generation equipment; 123. Contactor; 124. Relay; 125. Switch; 13. Hydraulic control cabinet; 131. Pressure holding valve; 132. Electrical contact mechanical pressure gauge; 133. Pressure transmitter; 134. Pressure holding valve switch; 135. Pressure holding valve quick connector; 14. Hydraulic power cabinet; 141. Hydraulic pump; 142. Solenoid valve; 2. Prestressed 21. Jack connector; 211. Jack groove; 212. Leveling bolt; 22. Jack; 221. Connecting plate; 222. Threaded hole; 223. Countersunk hole; 224. Telescopic rod; 225. Cylinder body; 23. Moving head; 24. Pad block; 25. Pad plate; 251. Pad plate threaded hole; 252. Pad plate countersunk hole; 26. Filler plate; 27. Self-locking steel wedge block; 28. Small plate; 3. Concrete waler; 4. Steel support; 5. Secondary grouting. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0046] This technical solution provides a prefabricated prestressed steel support servo system, including a servo control cabinet and a prestressing device. The servo control cabinet is placed on the concrete waler and fixed to the concrete waler with expansion bolts; one end of the prestressing device is connected to the steel support, and the other end rests on the secondary grouting, which serves to level and fill gaps.

[0047] The prestressing device mainly includes a jack connector, a jack, a movable head, a pad, a backing plate, a filler plate, and a self-locking steel wedge. The jack is placed in the jack slot of the jack connector and connected to the jack connector by bolts. The jack head has a connecting plate with threaded holes on both sides and the top, and a countersunk hole in the center, which is bolted to the jack extension rod. One end of the movable head is connected to the pad, and the other end is inserted into the opening of the jack connector. The movable head has a beveled middle section. A self-locking steel wedge is placed in the gap between the movable head and the jack connector. A leveling bolt is located at the top of the jack connector opening; tightening the leveling bolt adjusts the level of the pad and movable head, preventing the pad from sagging. The pad and backing plate are bolted together. Gaps between the pad and the jack connecting plate can be filled with a filler plate. The backing plate and the jack connecting plate can be connected by small plates. Thus, the length of the jack connector and the pad can be adjusted and prestressing applied by extending and retracting the jack extension rod. During prestressing, the telescopic rod extends to its maximum length, and the movable head and jack joint separate. The self-locking steel wedges automatically fall under their own weight to fill the gap, ensuring that the steel support can continue to bear the load even if the jack leaks oil or fails, thus guaranteeing system safety. During unloading, the jack telescopic rod retracts, and the pads separate from the secondary grouting.

[0048] The servo control cabinet mainly consists of a solar panel, a circuit control cabinet, a hydraulic control cabinet, and a hydraulic power cabinet. The three cabinets are connected by simple bolts, and the modules are connected by simple circuit connectors and quick-connect oil pipes, making assembly convenient. The solar panel is a flexible sheet that is directly attached to the top of the servo control cabinet for easy installation.

[0049] The circuit control cabinet mainly includes: a battery, a pressure data acquisition and transmission device, contactors, relays, and switches. The battery connects to solar panels to power the entire system. The pressure data acquisition and transmission device mainly connects to a pressure transmitter to read pressure data and send it to the server. This device has low power consumption and allows for set time intervals for data acquisition and transmission. The contactors connect to an electrical contact mechanical pressure gauge and a hydraulic pump, enabling low-power devices to control high-power devices. The relays connect to the electrical contact mechanical pressure gauge and control the hydraulic pump's on / off state based on the pressure range, achieving automatic pressure compensation. Switches are used for automatic pressure compensation and pressurization functions.

[0050] The hydraulic control cabinet mainly includes a pressure holding valve, an electric contact mechanical pressure gauge, and a pressure transmitter. The electric contact mechanical pressure gauge can be set with upper and lower pressure limits to achieve automatic compensation. The pressure transmitter can measure the pressure of the jack and convert it into an electrical signal for transmission to the mining and generating equipment. The pressure holding valve can lock the pressure in one direction and can be pressurized at any time. The quick connector of the pressure holding valve is connected to the hydraulic pump and jack of the hydraulic power cabinet through an oil pipe. The pressure holding valve switch can open or close the one-way pressure holding function.

[0051] The hydraulic power cabinet is equipped with a hydraulic pump, which has a solenoid valve and several quick-connect interfaces. It is connected to a pressure-holding valve via oil pipes to pressurize the jack. The opening and closing of each oil outlet of the solenoid valve is controlled by the circuit control cabinet. The hydraulic pump uses a low-voltage DC motor.

[0052] Example

[0053] like Figures 1-20 As shown, this embodiment provides a prefabricated prestressed steel support servo system, including: a servo control cabinet 1 and a prestressing device 2; the servo control cabinet 1 is placed on the concrete waler 3 and fixed to the concrete waler 3 by expansion bolts; one end of the prestressing device 2 is connected to the steel support 4, and the other end rests on the secondary grouting 5, which serves to level and fill gaps.

[0054] The prestressing device 2 includes a jack connector 21, a jack 22, a movable head 23, a pad 24, a pad plate 25, and a self-locking steel wedge 27. The jack 22 is connected to the jack connector 21 by bolts. One end of the movable head 23 is connected to the pad 24, and the other end is inserted into the opening of the jack connector 21. The self-locking steel wedge 27 is located in the gap between the movable head 23 and the jack connector 21. The pad 24 and the pad plate 25 are connected by bolts. The prestressing device 2 also includes a filler plate 26, which is located in the gap between the pad 24 and the connecting plate 221 of the jack 22. The prestressing device 2 also includes a small plate 28, which connects the pad plate 25 and the connecting plate 221 of the jack 22. The pad plate 25 has a countersunk hole 252 and a threaded hole 251.

[0055] The middle of the movable head 23 is made into a bevel.

[0056] The jack connector 21 includes a jack groove 211; the jack 22 is placed in the jack groove 211 of the jack connector 21; the upper part of the opening of the jack connector 21 is provided with a leveling bolt 212. By tightening the leveling bolt 212 downwards, the level of the pad 24 and the movable head 23 can be adjusted to prevent the pad 24 from falling.

[0057] The jack 22 includes a connecting plate 221, a threaded hole 222, a countersunk hole 223, a telescopic rod 224, and a cylinder body 225. The jack 22 has a connecting plate 221 at one end. The connecting plate 221 has threaded holes 222 on both sides and at the top. The connecting plate 221 has a countersunk hole 223 in the middle, which is connected to the telescopic rod 224 of the jack 22 by bolts. The telescopic rod 224 of the jack 22 is connected to the cylinder body 225.

[0058] The servo control cabinet 1 includes a solar panel 11, a circuit control cabinet 12, a hydraulic control cabinet 13, and a hydraulic power cabinet 14. The solar panel 11 is a flexible panel and is attached to the top of the circuit control cabinet 12. The circuit control cabinet 12, hydraulic control cabinet 13, and hydraulic power cabinet 14 are arranged sequentially from top to bottom and are connected by simple bolts. The circuit control cabinet 12 contains a circuit control module; the hydraulic control cabinet 13 contains a hydraulic control module; and the hydraulic power cabinet 14 contains a hydraulic power module. The circuit control module, hydraulic control module, and hydraulic power module are connected by simple electrical connectors and quick-connect oil pipes. The hydraulic power cabinet 14 is fixed to the concrete waler 3 with expansion bolts.

[0059] The circuit control module housed in circuit control cabinet 12 includes: battery 121, data acquisition and transmission device 122, contactor 123, relay 124, and switch 125. Battery 121 is connected to solar panel 11 to power the entire system. Data acquisition and transmission device 122 is mainly connected to the pressure transmitter 133 of the hydraulic control module in hydraulic control cabinet 13 to read pressure data and send it to the server. The server can be a mainstream server available on the market; the device has low power consumption and can be configured to acquire and transmit data at set time intervals. Contactor 123 is connected to hydraulic control cabinet 13. The electrical contact mechanical pressure gauge 132 of the hydraulic control module and the hydraulic pump 141 of the hydraulic power module in the hydraulic power cabinet 14 enable the control of high-power equipment by low-power equipment. The relay 124 is connected to the electrical contact mechanical pressure gauge 132 of the hydraulic control module in the hydraulic control cabinet 13, and controls the switching of the hydraulic pump 141 of the hydraulic power module in the hydraulic power cabinet 14 through the upper and lower pressure range, so as to realize the automatic pressure compensation function. The switch 125 is used for switching operations such as automatic pressure compensation function and pressurization function.

[0060] The hydraulic control module housed in the hydraulic control cabinet 13 includes a pressure holding valve 131, an electric contact mechanical pressure gauge 132, a pressure transmitter 133, a pressure holding valve switch 134, and a pressure holding valve quick connector 135. The electric contact mechanical pressure gauge 132 can be set with upper and lower pressure limits to achieve automatic compensation. The pressure transmitter 133 can measure the pressure of the jack 22 and convert it into an electrical signal for transmission to the acquisition and transmission equipment 122 of the circuit control module in the circuit control cabinet 12. The pressure holding valve 131 can lock the pressure in one direction and can be pressurized at any time. The pressure holding valve 131 is equipped with a pressure holding valve quick connector 135, which is connected to the hydraulic pump 141 and the jack 22 of the hydraulic power module in the hydraulic power cabinet 14 via an oil pipe. The pressure holding valve switch 134 can open or close the one-way pressure holding function.

[0061] The hydraulic power module housed in the hydraulic power cabinet 14 includes a hydraulic pump 141 and a solenoid valve 142. The solenoid valve 142 is equipped with several quick-connect interfaces, which are connected to the pressure holding valve 131 of the hydraulic control module housed in the hydraulic control cabinet 13 via oil pipes to pressurize the jack 22. The opening and closing of each oil outlet of the solenoid valve 142 is controlled by the circuit control cabinet 12. The hydraulic pump 141 uses a low-voltage DC motor.

[0062] In the aforementioned prestressing device 2, the jack joint 21 and the pad 24 can be adjusted in length and prestress can be applied via the telescopic rod 224 of the jack 22. When applying prestress, the telescopic rod 224 extends, the movable head 23 and the jack joint 21 separate, and the self-locking steel wedge 27 automatically falls down under its own weight to fill the gap, ensuring that the steel support 4 can continue to bear the load if the jack 22 leaks oil or fails, thus ensuring the safety of the system; when unloading, the telescopic rod 224 of the jack 22 retracts, and the pad 24 separates from the secondary grouting 5.

[0063] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A prefabricated prestressed steel support servo system, characterized in that, The assembled prestressed steel support servo system includes: a servo control cabinet (1) and a prestressing device (2); The servo control cabinet (1) is fixed to the concrete waler (3); One end of the prestressed device (2) is connected to the steel support (4), and the other end rests on the secondary grouting (5); The prestressing device (2) includes a jack connector (21), a jack (22), a movable head (23), a pad (24), a pad plate (25), and a self-locking steel wedge (27); The jack (22) is connected to the jack connector (21); One end of the movable head (23) is connected to the pad block (24), and the other end is inserted into the jack connector (21); The self-locking steel wedge (27) is located in the gap between the movable head (23) and the jack connector (21); The pad (24) is connected to the pad plate (25); The jack (22) includes a connecting plate (221), a threaded hole (222), a countersunk hole (223), a telescopic rod (224), and a cylinder (225); The jack (22) has a connecting plate (221) at its end. The connecting plate (221) has threaded holes (222) on both sides and at the top. The connecting plate (221) has a countersunk hole (223) in the middle. The connecting plate (221) is connected to the telescopic rod (224) of the jack (22) by bolts. The telescopic rod (224) of the jack (22) is connected to the cylinder body (225). The prestressing device (2) also includes a small plate (28); The pad (25) and the jack (22) are connected by a small plate (28).

2. The prefabricated prestressed steel support servo system according to claim 1, characterized in that, The jack connector (21) includes a jack groove (211); The jack (22) is placed into the jack groove (211) of the jack connector (21); The jack connector (21) has a leveling bolt (212) at the top of the opening.

3. The prefabricated prestressed steel support servo system according to claim 1, characterized in that, The servo control cabinet (1) is fixed to the concrete waler (3) by expansion bolts.

4. The prefabricated prestressed steel support servo system according to claim 1, characterized in that, The prestressing device (2) also includes a filler plate (26); The filler plate (26) is located in the gap between the pad (24) and the jack (22).

5. The prefabricated prestressed steel support servo system according to claim 1, characterized in that, The servo control cabinet (1) includes a solar panel (11), a circuit control cabinet (12), a hydraulic control cabinet (13), and a hydraulic power cabinet (14); The solar panel (11) is attached to the top of the circuit control cabinet (12); The circuit control cabinet (12), hydraulic control cabinet (13), and hydraulic power cabinet (14) are connected by bolts; The circuit control cabinet (12) is equipped with a circuit control module; The hydraulic control cabinet (13) is equipped with a hydraulic control module; The hydraulic power cabinet (14) is equipped with a hydraulic power module; The circuit control module, hydraulic control module, and hydraulic power module are connected via circuit connectors and quick-connect oil pipes.

6. The prefabricated prestressed steel support servo system according to claim 5, characterized in that, The circuit control module in the circuit control cabinet (12) includes: a storage battery (121), a data acquisition and transmission device (122), a contactor (123), and a relay (124); The battery (121) is connected to the solar panel (11) to supply power to the entire system; The data acquisition and distribution equipment (122) is connected to the hydraulic control module in the hydraulic control cabinet (13) to read pressure data; The contactor (123) connects the hydraulic control module in the hydraulic control cabinet (13) and the hydraulic power module in the hydraulic power cabinet (14) to achieve the purpose of controlling high-power equipment with low-power equipment; The relay (124) is connected to the hydraulic control module in the hydraulic control cabinet (13), and controls the hydraulic power module in the hydraulic power cabinet (14) through the upper and lower pressure range to realize the automatic pressure compensation function.

7. The prefabricated prestressed steel support servo system according to claim 6, characterized in that, The hydraulic control module inside the hydraulic control cabinet (13) includes a pressure holding valve (131), an electric contact mechanical pressure gauge (132), a pressure transmitter (133), and a pressure holding valve quick connector (135); The electric contact mechanical pressure gauge (132) can be set with upper and lower pressure limits to achieve automatic compensation function; The pressure transmitter (133) can measure the pressure of the jack (22) and convert it into an electrical signal to be transmitted to the circuit control module in the circuit control cabinet (12); The pressure holding valve (131) can lock the pressure in one direction and can be pressurized at any time. The pressure holding valve (131) is equipped with a pressure holding valve quick connector (135), which is connected to the hydraulic power module and jack (22) in the hydraulic power cabinet (14) through an oil pipe.

8. The prefabricated prestressed steel support servo system according to claim 5, characterized in that, The hydraulic power module inside the hydraulic power cabinet (14) includes a hydraulic pump (141) and a solenoid valve (142); The solenoid valve (142) is equipped with a quick interface, which is connected to the hydraulic control module in the hydraulic control cabinet (13) through an oil pipe to pressurize the jack (22) and control the opening and closing of each oil outlet of the solenoid valve (142) through the circuit control cabinet (12).

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