CN214141306U - Steel hanging box lifting system for bridge pier construction - Google Patents

Abstract

The utility model provides a steel hanging box operating system that pier was built and is used for the construction of pier, include: two sides of the bridge pier are respectively provided with a bearing platform; the gantry crane is arranged on the bearing platform; a lifting system; the upper end of the steel hanging box is connected with the gantry crane through a lifting system; and the control system is electrically connected with the lifting system to control the lifting of the steel hanging box. The problem of the steel hanging box transfer the degree of difficulty big is solved. The steel suspension box lifting system for pier construction realizes the synchronous descending of the steel suspension box through the mutual matching of the gantry crane, the lifting system and the control system, thereby being convenient for the construction of the pier; the unbalance phenomenon of the steel hanging box in the lowering process is avoided.

Description

Steel hanging box lifting system for bridge pier construction

Technical Field

The utility model belongs to the technical field of jacking equipment, concretely relates to steel hanging box operating system of pier construction usefulness.

Background

The cofferdam is a temporary enclosure structure constructed for constructing permanent water conservancy facilities in the water conservancy project construction. The cofferdam has the functions of preventing water and soil from entering the building position of the building so as to drain water in the cofferdam, excavate a foundation pit and build the building.

In the construction process of the pier, a cofferdam needs to be built, as an option, a steel suspension box can be used as the cofferdam, and the steel suspension box can be removed after the deepwater high pile cap is built.

The steel hanging box is large in size, heavy and large in transfer difficulty, and meanwhile, in the transfer process, the steel hanging box needs to be kept balanced, stable and evenly stressed, so that the steel hanging box is ensured to descend synchronously, and the safety is ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel hanging box operating system of pier construction usefulness has solved the steel hanging box and has transferred the problem that the degree of difficulty is big.

The utility model discloses the technical scheme who adopts does:

the utility model provides a steel hanging box operating system of pier construction usefulness for the construction of pier, includes:

two sides of the bridge pier are respectively provided with a bearing platform;

the gantry crane is arranged on the bearing platform;

a lifting system;

the upper end of the steel hanging box is connected with the gantry crane through a lifting system;

and the control system is electrically connected with the lifting system to control the lifting of the steel hanging box.

The steel suspension box lifting system for bridge pier construction realizes synchronous descending of the steel suspension box through mutual matching of the gantry crane, the lifting system and the control system, so that the construction of the bridge pier is facilitated; the unbalance phenomenon of the steel hanging box in the lowering process is avoided.

Optionally, the lifting system comprises a plurality of hydraulic jacks, a plurality of lifting rods and a support frame, wherein the hydraulic jacks and the lifting rods are arranged in one-to-one correspondence, and are uniformly distributed on the orthographic projection of the cross section of the steel hanging box;

the support frame comprises an upper frame plate and a plurality of upright columns, the hydraulic jack is fixed on the upper frame plate, the upper ends of the upright columns are connected with the upper frame plate, and the lower ends of the upright columns penetrate through the steel hanging box and extend to the bottom of the river;

the upper end of the lifting rod is connected to the gantry crane, and the lower end of the lifting rod is connected to the steel hanging box.

Optionally, the steel suspension box comprises a box body with an upper opening and a lower opening, a plurality of plate bodies positioned in the steel suspension box and a sealing bottom plate positioned at the lower opening of the box body, wherein the plate bodies are sequentially arranged from top to bottom, and the lifting rod is connected to the sealing bottom plate;

the plate body is provided with a plurality of first hole bodies, the sealing bottom plate is provided with a plurality of second hole bodies, and the first hole bodies and the second hole bodies are arranged in a one-to-one correspondence mode.

Optionally, the box body is divided into a number of first sections, the first sections comprising two oppositely arranged side panels and an intermediate panel connecting adjacent side panels.

Optionally, the curb plate includes the wallboard and connects in the perpendicular rib of wallboard, and the intermediate lamella includes interior ring plate and the fagging of centre gripping interior ring plate, and wherein, interior ring plate one end is pegged graft in the fagging, and the interior ring plate other end passes perpendicular rib and wallboard in proper order and extends outside the curb plate.

Optionally, the plate body comprises a frame portion and an opening portion located in the frame portion, and the first hole body is located on the opening portion;

the frame portion includes straight section and arc section, and the arc section sets up on the four corners of frame portion, links to each other through at least one straight section between the adjacent arc section.

Optionally, the straight section comprises a plurality of first straight plates, and the first straight plates are divided into two groups which are connected through inclined struts and are oppositely arranged.

Optionally, the arc segment comprises a plurality of second straight plates positioned at two sides of the arc plate, and the second straight plates are connected to the first straight plates; the arc plate and the second straight plate are divided into two groups which are connected through the inclined strut and are oppositely arranged.

Optionally, the control system comprises a controller, a pump body and a plurality of distributors, wherein the pump body is communicated with the distributors through a first oil pipe, and the distributors are connected to the hydraulic jacks through a second oil pipe;

the first oil pipe is provided with a quick connector, and the second oil pipe is provided with a one-way valve and a shutoff valve;

the controller controls the pump body to start and stop, and when the pump body is started, the hydraulic jack is synchronously lifted and lowered through the distributor.

Optionally, the control system further comprises a sensor group electrically connected to the controller to feed back whether the hydraulic jacks are lifted synchronously.

The utility model has the advantages that:

the steel suspension box lifting system for bridge pier construction realizes synchronous descending of the steel suspension box through mutual matching of the gantry crane, the lifting system and the control system, so that the construction of the bridge pier is facilitated; the unbalance phenomenon of the steel hanging box in the transfer process is avoided, the possibility that the steel hanging box shakes is reduced, the construction safety is improved, meanwhile, the steel hanging box is prevented from shaking to drive the bearing platform to shake, and the service life of the bearing platform is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a steel suspension box lifting system for bridge pier construction from a first view angle;

fig. 2 is a schematic structural view of the steel suspension box lifting system for bridge pier construction at a second view angle;

fig. 3 is a schematic structural view of a plate body;

FIG. 4 is a schematic structural view of a first segment;

FIG. 5 is a schematic structural view of a straight segment;

FIG. 6 is a schematic structural view of an arc segment;

fig. 7 is a wiring schematic of the control system.

In the figure: 1. a bearing platform; 2. a gantry crane; 3. a lifting system; 31. a hydraulic jack; 32. a lifting rod; 33. a support frame; 331. an upper frame plate; 332. a column; 4. a steel suspension box; 41. a box body; 42. a plate body; 43. sealing the bottom plate; 411. a first segment; 421. a frame portion; 422. an opening part; 421a, straight segment; 421b, arc segment; 51. a pump body; 52. a dispenser; 53. a first oil pipe; 54. a second oil pipe; 55. a quick coupling; 56. a one-way valve; 57. a shut-off valve.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 7, the steel suspension box lifting system for constructing a bridge pier according to the present embodiment is used for constructing a bridge pier, and includes: the bridge pier comprises at least two bearing platforms 1, wherein two sides of the bridge pier are respectively provided with one bearing platform 1; the bearing platform 1 provides a mounting position for the gantry crane 2 so as to facilitate the arrangement of the lifting system 3.

The gantry crane 2 is arranged on the bearing platform 1; a lifting system 3; the gantry crane 2 and the lifting system 3 are used in a matching way, are connected to the steel hanging box 4 and fix the steel hanging box 4 at a certain height.

The upper end of the steel hanging box 4 is connected to the gantry crane 2 through the lifting system 3; the steel suspension boxes 4 form a cofferdam to facilitate construction of the pier.

And the control system is electrically connected with the lifting system 3 to control the lifting of the steel hanging box 4.

This steel hanging box operating system of pier construction usefulness builds cushion cap 1 when buildding, and wherein, the position of cushion cap 1 is adjusted according to the position of pier, and cushion cap 1 builds the completion back, installs portal crane 2 to cushion cap 1 on, and portal crane 2 provides the fulcrum for operating system 3, helps building of operating system 3.

Optionally, a trestle is built from a river bank to a river, and the bearing platform 1 is connected to the trestle, so that material transfer, the passage of constructors and the like are performed through the trestle, and the construction efficiency is improved.

When the lifting system of the steel suspension box for building the pier works, the steel suspension box 4 is transported between the two bearing platforms 1 and is connected to the lifting system 3, the lifting system 3 is remotely controlled through the control system, so that the steel suspension box 4 descends, the steel suspension box 4 enters water and forms a cofferdam, and the pier is built after the water in the steel suspension box 4 is discharged.

The steel suspension box lifting system for building the pier realizes synchronous descending of the steel suspension box 4 through mutual matching of the gantry crane 2, the lifting system 3 and the control system, so that the construction of the pier is facilitated; the phenomenon of unbalance of the steel hanging box 4 in the transfer process is avoided, the possibility of shaking of the steel hanging box 4 is reduced, the construction safety is improved, meanwhile, the steel hanging box 4 is prevented from shaking to drive the bearing platform 1 to shake, and the bearing platform 1 is guaranteed to reach the service life.

In the specific embodiment provided by the present invention, as an option, the lifting system 3 includes a plurality of hydraulic jacks 31, a plurality of lifting rods 32 and a supporting frame 33, wherein the hydraulic jacks 31 and the lifting rods 32 are arranged in a one-to-one correspondence, and the hydraulic jacks 31 and the lifting rods 32 are uniformly distributed on the cross-sectional orthographic projection of the steel hanging box 4; the support frame 33 is a frame structure with stable structure, so as to fix the hydraulic jack 31 and help to keep the hydraulic jack 31 stable in position. The hydraulic jack 31 drives the lifting rod 32 to slide up and down in a reciprocating manner, so that the steel hanging box 4 is driven to slide up and down in a reciprocating manner.

When the lifting system 3 works, the hydraulic jacks 31 are fixed on the support frame 33, the lifting rod 32 is connected to the steel hanging box 4, the plurality of hydraulic jacks 31 simultaneously descend under the control of the control system, and the lifting rod 32 and the steel hanging box 4 slide downwards along with the descending rod. Meanwhile, the control system detects the descending distance of each of the lifting rods 32, so that the adaptability adjustment is performed, and the synchronous descending is ensured.

In one possible design, the hydraulic jacks 31 and the lifting rods 32 are respectively provided in 36 numbers and arranged in a 3 × 12 pattern. Or, the number of the hydraulic jacks 31 and the lifting rods 32 is adaptively increased or decreased, and the present invention does not limit this.

In one possible design, the supporting frame 33 includes an upper frame plate 331 and a plurality of columns 332, the hydraulic jack 31 is fixed on the upper frame plate 331, the upper ends of the columns 332 are connected to the upper frame plate 331, and the lower ends of the columns 332 pass through the steel suspension box 4 and extend to the river bottom; ribs are also provided between the uprights 332 and the upper shelf 331 to enhance the structural rigidity.

Optionally, the height of the columns 332 and the number of columns 332 are both adapted to the construction requirements, and the present invention is not limited thereto.

In one possible design, the upper end of the lifting rod 32 is connected to the gantry crane 2, and the lower end of the lifting rod 32 is connected to the steel suspension box 4. The connected mode of lifter 32 and portal crane 2 and the connected mode of lifter 32 and steel hanging box 4 can set up to arbitrary suitable connected mode, the utility model discloses the contrast does not do any restriction.

In the specific embodiment provided by the present invention, as an option, the steel suspension box 4 includes a box body 41 with an upper opening and a lower opening, a plurality of plate bodies 42 located in the steel suspension box 4, and a sealing plate 43 located at the lower opening of the box body 41, wherein the plate bodies 42 are sequentially arranged from top to bottom, and the lifting rod 32 is connected to the sealing plate 43; thus, the box 41 is used as a cofferdam to block the water, thereby creating a waterless environment and facilitating the construction of a pier. The plate body 42 increases the upper limit value of the bearing acting force of the box body 41 on one hand, and on the other hand is matched with the construction of a pier, so that the construction difficulty is reduced, and the construction quality is ensured. The back cover plate 43 serves as a connecting function.

The plate body 42 is provided with a plurality of first hole bodies, the sealing bottom plate 43 is provided with a plurality of second hole bodies, and the first hole bodies and the second hole bodies are arranged in a one-to-one correspondence manner. First hole body and second hole body be convenient for stand 332, lifter 32 isotructure on the one hand and pass, help the transferring of steel hanging box 4, on the other hand is in the pier construction in-process, and the transfer such as tubular pile, steel reinforcement cage of being convenient for.

In the specific embodiment provided by the present invention, as an option, the box body 41 is divided into a plurality of first segments 411, and the first segments 411 include two side plates disposed oppositely and an intermediate plate connecting the adjacent side plates. Therefore, the difficulty of dismounting and transporting the steel hanging box 4 is simplified, the application range is enlarged, and the transferring cost is reduced.

In one possible design, as shown in fig. 4, the side plates include wall plates and vertical ribs connected to the wall plates, and the middle plate includes an inner ring plate and a supporting plate for clamping the inner ring plate, wherein one end of the inner ring plate is inserted into the supporting plate, and the other end of the inner ring plate sequentially penetrates through the vertical ribs and the wall plates to extend out of the side plates.

In one possible design, as shown in fig. 1-3 and 4-5, the plate body 42 includes a frame portion 421 and an opening portion 422 located in the frame portion 421, and the first hole body is located on the opening portion 422; the opening portion 422 is a frame structure with a first opening.

The frame portion 421 includes straight segments 421a and arc segments 421b, the arc segments 421b are disposed at four corners of the frame portion 421, and adjacent arc segments 421b are connected to each other by at least one straight segment 421 a.

Therefore, the plate body 42 is also designed according to the idea of modular design, which is convenient for maintenance and beneficial to reduce the cost. Meanwhile, the transfer difficulty is also reduced.

In one possible design, as shown in fig. 5, the straight section 421a includes a plurality of first straight plates divided into two groups connected by diagonal braces and oppositely disposed. The first straight plate is provided with a plurality of convex ribs so as to facilitate the connection of the inclined struts.

In one possible design, as shown in fig. 6, the arc segment 421b includes several second straight plates located at both sides of the arc plate, the second straight plates being connected to the first straight plates; the arc plate and the second straight plate are divided into two groups which are connected through the inclined strut and are oppositely arranged. The arc plate and the second straight plate are both provided with a plurality of convex ribs so as to facilitate the connection of the inclined strut.

Thereby to steel hanging box 4 carry out the fretwork design, on the basis of guaranteeing steel hanging box 4 intensity, alleviateed steel hanging box 4's weight.

In the specific embodiment provided by the present invention, as an option, the control system includes a controller, a pump body 51 and a plurality of distributors 52, the pump body 51 is communicated with the distributors 52 through a first oil pipe 53, and the distributors 52 are connected to the hydraulic jack 31 through a second oil pipe 54; the first oil pipe 53 is provided with a quick joint 55, and the second oil pipe 54 is provided with a check valve 56 and a shutoff valve 57; the controller controls the pump body 51 to start and stop, and when the pump body 51 is started, the distributor 52 enables the hydraulic jack 31 to synchronously lift.

In one possible design, the control system further includes a sensor group electrically connected to the controller to feed back whether the hydraulic jacks 31 are lifted synchronously; the sensor group comprises a displacement sensor and a pressure sensor.

Optionally, displacement sensor and pressure sensor select arbitrary suitable sensor according to the construction requirement, the utility model discloses do not do any restriction to this.

For the control system, based on the theory of a closed-loop control system, a displacement signal of the movement of the steel suspension box 4 is used as a controlled parameter, and a pressure signal generated by the steel suspension box 4 in a stress cavity of the hydraulic jack 31 is used as a reference quantity. The signals are collected by the sensor group and transmitted to the controller. The controller receives and processes these signals. The controller compares these signals and compares them with the input tolerance value, and when it is found that there is a possibility of an out-of-tolerance in a controlled point, the controller sends a signal to actuate the check valve 56 and the cut-off valve 57 in the controlled point, so as to shut off the oil supply from the pump, thereby limiting the raising or lowering operation of the hydraulic jack 31 in the controlled point. Also when the signal feedback indicates that there is a hysteresis in the stopped point, the controller sends a signal to actuate the check valve 56 and the shut-off valve 57 at that point to open the pump supply and return the hydraulic jack 31 at that point to the raising or lowering motion. By these precisely controlled actions between the controlled points, the entire synchronous control system achieves a synchronization goal in motion.

Specifically, the lowering of the steel suspension box 4 is performed by using the hydraulic jack 31. When the hydraulic jack is lowered, marks are made to ensure that the strokes of the hydraulic jacks 31 are consistent. Meanwhile, a special person is required to uniformly command to ensure that each lifting point is uniformly stressed. The specific operation is as follows:

(1) set up steel hanging box 4 and transfer the command set, be responsible for transferring in-process technical information collection, analysis to assign operating instruction.

(2) And (3) screwing a screw nut of finish rolling deformed steel bars on the top surface of the hydraulic jack 31, jacking the hydraulic jack 31, lifting the hanging box for 0.1m, holding the force for 30min, checking whether the hanging box is abnormal, cutting off a protective cylinder bracket and a protective cylinder connecting steel pipe which are positioned below the steel hanging box 4, and emptying a cofferdam lowering space.

(3) The steel suspension box 4 is synchronously lowered by using a jack.

The upper end of the lifting rod 32 is connected to the hydraulic jack 31 through an upper nut, and the lower end of the lifting rod 32 is connected to the steel hanging box 4 through a lower nut. And controlling all the hydraulic jacks 31 to retract through the controller, screwing down the lower nuts after all the hydraulic jacks retract to the proper positions, and stressing the steel hanging box 4 through the lower nuts. At this time, the upper nut is loosened, and all the hydraulic jacks 31 are controlled to lift up to 10cm through the controller. And then the upper nut is screwed down and the lower nut is loosened.

And counting and measuring each hydraulic jack 31 after each downward movement for a stroke (10cm), so as to ensure the downward movement synchronism of all the hydraulic jacks 31.

The hanging box is transferring the in-process, if the asynchronous transfer that appears, should in time adjust hydraulic jack 31. When the hanging box is transferred, 6-level strong wind appears, and the transfer is immediately stopped, so that the safety is ensured.

(4) And (4) repeating the step (3) until the steel hanging box 4 is lowered to the designed position.

After the steel hanging box 4 is put down in place, the conditions of the lifting rods 32 are checked to ensure that all the lifting rods 32 participate in the work.

Optionally, the lifting rod 32 is made of fine-rolled deformed steel, and the PVC pipe sleeved on the lifting rod is protected for safety.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims (10)

1. The utility model provides a steel hanging box operating system of pier construction usefulness for the construction of pier, its characterized in that includes:

the bridge pier comprises at least two bearing platforms (1), wherein one bearing platform (1) is arranged on each of two sides of the bridge pier;

the gantry crane (2) is arranged on the bearing platform (1);

a lifting system (3);

the upper end of the steel hanging box (4) is connected with the gantry crane (2) through a lifting system (3);

and the control system is electrically connected with the lifting system (3) to control the lifting of the steel hanging box (4).

2. The steel suspension box lifting system for pier construction according to claim 1, wherein: the lifting system (3) comprises a plurality of hydraulic jacks (31), a plurality of lifting rods (32) and a support frame (33), wherein the hydraulic jacks (31) and the lifting rods (32) are arranged in a one-to-one correspondence manner, and the hydraulic jacks (31) and the lifting rods (32) are uniformly distributed on the orthographic projection of the cross section of the steel hanging box (4);

the support frame (33) comprises an upper frame plate (331) and a plurality of upright columns (332), the hydraulic jack (31) is fixed on the upper frame plate (331), the upper ends of the upright columns (332) are connected to the upper frame plate (331), and the lower ends of the upright columns (332) penetrate through the steel hanging box (4) and extend to the river bottom;

the upper end of the lifting rod (32) is connected to the gantry crane (2), and the lower end of the lifting rod (32) is connected to the steel hanging box (4).

3. The steel suspension box lifting system for pier construction according to claim 1, wherein: the steel hanging box (4) comprises a box body (41) with an upper opening and a lower opening, a plurality of plate bodies (42) positioned in the steel hanging box (4) and a sealing bottom plate (43) positioned at the lower opening of the box body (41), wherein the plate bodies (42) are sequentially arranged from top to bottom, and the lifting rod (32) is connected to the sealing bottom plate (43);

a plurality of first hole bodies are arranged on the plate body (42), a plurality of second hole bodies are arranged on the sealing bottom plate (43), and the first hole bodies and the second hole bodies are arranged in a one-to-one correspondence mode.

4. The steel suspension box lifting system for pier construction according to claim 3, wherein: the box body (41) is divided into a plurality of first sections (411), and each first section (411) comprises two oppositely arranged side plates and a middle plate for connecting the adjacent side plates.

5. The steel suspension box lifting system for pier construction according to claim 4, wherein: the curb plate includes the wallboard and connects in the perpendicular rib of wallboard, and the intermediate lamella includes the fagging of interior annular slab and centre gripping inner ring board, and wherein, inner ring board one end is pegged graft in the fagging, and the inner ring board other end passes in proper order and erects rib and wallboard and extend to outside the curb plate.

6. The steel suspension box lifting system for pier construction according to claim 3, wherein: the plate body (42) comprises a frame portion (421) and an opening portion (422) located in the frame portion (421), and the first hole body is located on the opening portion (422);

the frame portion (421) comprises straight sections (421a) and arc sections (421b), the arc sections (421b) are arranged on four corners of the frame portion (421), and adjacent arc sections (421b) are connected through at least one straight section (421 a).

7. The steel suspension box lifting system for pier construction according to claim 6, wherein: the straight section (421a) comprises a plurality of first straight plates which are divided into two groups which are connected through inclined struts and are oppositely arranged.

8. The steel suspension box lifting system for pier construction according to claim 6, wherein: the arc segment (421b) comprises a plurality of second straight plates which are positioned at two sides of the arc plate and are at least two arc plates, and the second straight plates are connected with the first straight plates; the arc plate and the second straight plate are divided into two groups which are connected through the inclined strut and are oppositely arranged.

9. The steel suspension box lifting system for pier construction according to claim 1, wherein: the control system comprises a controller, a pump body (51) and a plurality of distributors (52), wherein the pump body (51) is communicated with the distributors (52) through first oil pipes (53), and the distributors (52) are connected to the hydraulic jacks (31) through second oil pipes (54);

a quick joint (55) is arranged on the first oil pipe (53), and a one-way valve (56) and a shutoff valve (57) are arranged on the second oil pipe (54);

the controller controls the pump body (51) to start and stop, and when the pump body (51) is started, the hydraulic jack (31) is synchronously lifted and lowered through the distributor (52).

10. The steel suspension box lifting system for pier construction according to claim 9, wherein: the control system also comprises a sensor group electrically connected with the controller to feed back whether the hydraulic jack (31) is lifted synchronously.

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