A mobile support device and a construction method for diaphragm wall steel box support.

Abstract

This invention relates to the field of diaphragm wall construction, specifically a mobile support device and a method for supporting diaphragm wall steel boxes. The device includes an erection system and a lifting base. The erection system includes a movable base with a frame mounted on it. A hoisting mechanism is located at the end of the frame away from the movable base. A lateral compression mechanism is also provided on the frame. A lateral limiting mechanism is located at the end of the frame away from the movable base. The mobile support device disclosed in this invention can provide rigid support for the steel box, improving the stability and safety of the steel box during the docking construction process. This allows the steel box construction to proceed safely even in windy weather, thereby ensuring construction progress and saving project construction costs.

Description

Technical Field

[0001] This invention relates to the field of diaphragm wall construction, specifically a mobile support device and a method for constructing diaphragm wall steel box support. Background Technology

[0002] Diaphragm walls, as a commonly used support structure for gravity anchorages in bridges, have advantages such as high wall stiffness and high load-bearing capacity.

[0003] Currently, the most advanced diaphragm wall construction project uses a steel box structure. Due to the large weight and long length of the steel box structure, construction techniques such as in-factory segmented manufacturing and on-site segmented assembly are adopted.

[0004] After the first section of the steel box is lowered into the trench, the second section of the steel box needs to be welded to the first section. Due to the high requirements for steel box welding in design and construction, full welding is required. However, the construction work area at the steel box welding point is small, which results in a long welding time.

[0005] During the welding process of the steel box, the second steel box needs to be lifted by a crawler crane and fixed by guy ropes throughout the process.

[0006] The limitations of existing technical solutions are as follows:

[0007] 1. Since the crawler crane hoisting and guy rope fixing scheme is a flexible hoisting and support scheme, it can be carried out well in light wind weather. However, for safety reasons, work needs to be stopped in moderate or above wind weather, and the steel box welding work cannot be carried out, resulting in a gap in the project. Since the bridge construction area is often located in a region where the weather changes rapidly and moderate or above wind weather is common, this disadvantage is even more obvious.

[0008] Second, existing technical solutions have high requirements for the safety and reliability of crawler cranes. If problems occur at the crawler crane hook or lifting device and are not detected in time, it will have a certain impact on the safety of construction.

[0009] Third, the crawler crane hoisting and guy rope fixing scheme has poor stability for the steel box support. The steel box needs to be fixed during the butt welding process. Therefore, the flexible hoisting and fixing scheme has a certain impact on the welding construction and can easily affect the welding quality of the steel box.

[0010] Fourth, since the crawler crane needs to lift the steel box throughout the entire process, it cannot perform other work during the steel box welding process, resulting in low equipment utilization of the crawler crane itself.

[0011] In order to improve or solve at least one of the above problems, a support device or apparatus is needed to support the construction of the steel box. Summary of the Invention

[0012] The purpose of this invention is to provide an automated support assembly that enables steel box construction even in windy weather conditions.

[0013] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0014] A mobile support device includes erection equipment and a lifting base;

[0015] The erection equipment includes a mobile base, a frame is provided on the mobile base, and a hoisting mechanism is provided at the end of the frame away from the mobile base;

[0016] The frame is also equipped with a lateral compression mechanism;

[0017] The frame is equipped with a lateral limiting mechanism at the end away from the movable base.

[0018] The mobile base includes walking legs, which are connected to a multi-functional wheel set.

[0019] The frame is connected to the mobile base via a connecting mechanism, the connecting mechanism including fixed legs mounted on the frame; the frame is connected to the walking legs in the mobile base via the fixed legs.

[0020] The lateral compression mechanism includes multiple support arms mounted on the frame; each support arm includes an outer support arm cylinder, a hydraulic cylinder, an inner support arm cylinder, and an electrically controlled permanent magnet chuck; the hydraulic cylinder is hinged to both the outer and inner support arm cylinders, and the inner support arm cylinder can move along the outer support arm cylinder.

[0021] The frame includes a front frame and two side frames on either side of the front frame. The horizontal projection of the front frame and the two side frames forms a [ shape; the side frames and the side frames are all equipped with support arms.

[0022] The lateral limiting mechanism includes individual limiting components mounted on the frame. Each individual limiting component includes a rotating beam mounted on the frame, and the rotating beam is connected to a rotation drive unit. An individual limiting component is provided on each side of the frame. The two individual limiting components are distributed in parallel with relative intervals.

[0023] The hoisting mechanism includes a support frame mounted on a frame, and a hoisting hoist is mounted on the support frame; the support frame includes two lateral supports; the upper ends of the two lateral supports are connected by a traveling beam; each lateral support includes a column mounted on the frame, and a crossbeam is mounted on the column, and the traveling beam is connected to the crossbeam; the hoisting hoist is connected to the traveling beam.

[0024] The lifting base includes an anchor plate, an outer sleeve for the outriggers, a C-shaped connecting rod, a straight connecting rod, a lifting hydraulic cylinder, an inner sleeve for the outriggers, and a connecting plate; each inner sleeve for the outriggers corresponds to an outer sleeve for the outriggers, and the two ends of the lifting hydraulic cylinder are respectively hinged to the outer sleeve for the outriggers and the inner sleeve for the outriggers, so that the inner sleeve for the outriggers can move up and down along the outer sleeve for the outriggers; the connecting plate is fixed above the inner sleeve for the outriggers.

[0025] The frame is provided with a top platform at the end away from the mobile base, and the hoisting mechanism and the lateral limiting mechanism are both located on the top platform.

[0026] A construction method for diaphragm wall steel box support using mobile support equipment.

[0027] The construction method includes the following steps:

[0028] Step 1: After the lower steel box has been positioned in the channel section, install the lifting base on the construction site, and at the same time retract the inner sleeves of each outrigger in the lifting base to the lowest position.

[0029] Step 2: Drive the erection equipment from the side of the lifting base to directly above the lifting base, and then connect the erection equipment to the lifting base;

[0030] Step 3: By controlling the lifting base, the inner sleeves of each outrigger in the lifting base are raised to the highest position, thereby driving the erection equipment to rise synchronously, and then the corresponding rotating beam in the lateral compression mechanism is opened.

[0031] Step 4: In front of the equipment, use a crawler crane to lift the upper steel box directly above the lower steel box, and then rotate the opened rotating beam back to its original position.

[0032] Step 5: Use a crawler crane to gradually lower the upper steel box and adjust its position until the upper steel box is attached to the lateral extrusion mechanism;

[0033] Then, each support arm on the control frame extends to work, and the electric permanent magnet chuck is attached to the corresponding support position of the upper steel box. Then, the electric permanent magnet chuck is adjusted to the magnetic attraction state to support and magnetically attract the upper steel box.

[0034] Step Six: Release the crawler crane hook and move it away. Move the traveling beam and hoist to directly above the upper steel box. Use the hoist to make a preliminary connection for the upper steel box. Then, under the control of the lifting hydraulic cylinder, gradually lower the inner sleeves of each outrigger, so that the upper steel box will also be lowered until the lower end face of the upper steel box is close to the welding distance with the upper end face of the lower steel box.

[0035] Step 7: Weld the upper steel box to the lower steel box. The upper steel box is erected and supported by the erection equipment throughout the welding process.

[0036] Step 8: After the upper steel box and the lower steel box are welded together, adjust the electric permanent magnet chuck to the non-magnetic state, then retract each support arm to the initial state, and use the hoist to lift the upper steel box; so that the upper steel box is removed from the lateral compression mechanism.

[0037] Step 9: Then control the rotating drive unit to control the rotating beams, so that each rotating beam opens, and then the hoist works to lower the upper steel box into the construction trench section;

[0038] Step 10: Loosen the hoist hook, retract the inner sleeves of each outrigger to the lowest position using the lifting hydraulic cylinder, then remove the bolts connecting the erection equipment and the lifting base, separate the erection equipment from the lifting base, and drive the erection equipment away from the side of the lifting base to complete the support and erection work of the upper steel box.

[0039] The advantages of this invention are:

[0040] This invention discloses a mobile support device and a construction method for diaphragm wall steel box support.

[0041] The mobile support equipment disclosed in this invention can provide rigid support for steel boxes, improve the stability and safety of the steel boxes during the docking construction process, and enable the steel box construction to be carried out safely even in windy weather conditions, thereby ensuring the construction progress and saving project construction costs. Attached Figure Description

[0042] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0043] Figure 1 This is an isometric view of the equipment erected in this invention.

[0044] Figure 2 This is a side view of the equipment being installed in this invention.

[0045] Figure 3 This is a front view of the device being installed in this invention.

[0046] Figure 4 This is a top view of the equipment being installed in this invention.

[0047] Figure 5 This is an isometric view of the lateral support arm in this invention.

[0048] Figure 6 This is an isometric view of the positive support arm in this invention.

[0049] Figure 7 This is an isometric drawing of the lifting base in this invention.

[0050] Figure 8 This is an isometric view of the upper steel box in this invention.

[0051] Figure 9 This is a schematic diagram of step one in the present invention.

[0052] Figure 10 This is a schematic diagram of step two in this invention.

[0053] Figure 11 This is a schematic diagram of step three in this invention.

[0054] Figure 12 This is a schematic diagram of step four in this invention.

[0055] Figure 13 This is a schematic diagram of step five in this invention.

[0056] Figure 14 This is a schematic diagram of step six in the present invention.

[0057] Figure 15 This is a schematic diagram of step eight in this invention.

[0058] Figure 16 This is a schematic diagram of step nine in the present invention.

[0059] Figure 17 This is a schematic diagram of step ten in the present invention.

[0060] The markings in the above figures are all

[0061] 1. Multi-functional wheel set; 2. Traveling outriggers; 3. Fixed flange; 4. Fixed outriggers; 5. Frame; 6. Lateral support arm; 7. Forward support arm; 8. Outer rotary motor; 9. Outer rotary beam; 10. Inner rotary motor; 11. Inner rotary beam; 12. Column; 13. Crossbeam; 14. Traveling beam; 15. Hoist; 16. Top platform; 1701. Anchor plate; 1702. Outrigger sleeve; 1703. C-type connecting rod; 1704. Straight connecting rod. 1705, Lifting hydraulic cylinder, 1706, Outrigger inner sleeve, 1707, Connecting plate; 601, Outrigger outer cylinder, 602, Outrigger hydraulic cylinder, 603, Outrigger inner cylinder, 604, Electro-controlled permanent magnet chuck; 701, Outrigger outer cylinder, 702, Outrigger hydraulic cylinder, 703, Outrigger inner cylinder, 704, Electro-controlled permanent magnet chuck; 1901, Steel box body, 1902, Bracket, 1903, Lifting lug; 18, Lower steel box; 20, Crawler crane. Detailed Implementation

[0062] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0063] A mobile support device includes an erection device and a lifting base; the erection device includes a movable base, a frame is mounted on the movable base, and a hoisting mechanism is provided at the end of the frame away from the movable base; a lateral compression mechanism is also provided on the frame; a lateral limiting mechanism is provided at the end of the frame away from the movable base; the mobile support device disclosed in this invention can provide rigid support for steel boxes, improve the stability and safety of the steel boxes during the docking construction process, and enable the steel box construction to be carried out safely even in windy weather conditions, thereby ensuring the construction progress and saving project construction costs.

[0064] Furthermore, the mobile base described in this invention includes walking legs, which are connected to a multi-functional wheel set; the walking legs provide excellent lower support, while the multi-functional wheel set allows for easy repositioning of the support equipment as needed during subsequent use.

[0065] Furthermore, in this invention, the frame is connected to the mobile base via a connecting mechanism, the connecting mechanism including fixed legs mounted on the frame; the frame is connected to the traveling legs in the mobile base via the fixed legs; the connecting mechanism facilitates the installation and connection of the frame on the mobile base.

[0066] Furthermore, the lateral compression mechanism in this invention includes multiple support arms mounted on the frame; each support arm includes an outer support arm cylinder, a hydraulic cylinder, an inner support arm cylinder, and an electrically controlled permanent magnet chuck; the hydraulic cylinder is hinged to both the outer and inner support arm cylinders, and the inner support arm cylinder can move along the outer support arm cylinder; the movement of the support arms facilitates lateral compression and fixation of the hoisted steel box.

[0067] Furthermore, in this invention, the frame includes a front frame and two side frames on either side of the front frame. The horizontal projection of the front frame and the two side frames forms a [-shape]. Each side frame and the side frames are equipped with a support arm. Based on this arrangement, the side of the frame is equivalent to having an opening, which facilitates the subsequent detachment of the frame from the steel box. This avoids the situation where the support equipment can smoothly detach from the steel box after the upper and lower steel boxes are connected.

[0068] Furthermore, the lateral limiting mechanism described in this invention includes individual limiting components mounted on the frame, each individual limiting component including a rotating beam mounted on the frame, the rotating beam being connected to a rotating drive unit; an individual limiting component is provided on each side of the frame; the two individual limiting components are distributed in parallel with relative intervals; based on this design, it is convenient to support and limit the steel box, and convenient to connect and limit the upper steel box with the lower steel box.

[0069] Furthermore, in this invention, a top platform is provided at the end of the frame away from the movable base, and the hoisting mechanism and the lateral limiting mechanism are both set on the top platform; the setting of the top platform facilitates the installation and arrangement of the hoisting mechanism and the lateral limiting mechanism on the frame.

[0070] A construction method for diaphragm wall steel box support using mobile support equipment.

[0071] The construction method includes the following steps:

[0072] Step 1: After the lower steel box has been positioned in the channel section, install the lifting base on the construction site, and at the same time retract the inner sleeves of each outrigger in the lifting base to the lowest position.

[0073] Step 2: Drive the erection equipment from the side of the lifting base to directly above the lifting base, and then connect the erection equipment to the lifting base;

[0074] Step 3: By controlling the lifting base, the inner sleeves of each outrigger in the lifting base are raised to the highest position, thereby driving the erection equipment to rise synchronously, and then the corresponding rotating beam in the lateral compression mechanism is opened.

[0075] Step 4: In front of the equipment, use a crawler crane to lift the upper steel box directly above the lower steel box, and then rotate the opened rotating beam back to its original position.

[0076] Step 5: Use a crawler crane to gradually lower the upper steel box and adjust its position until the upper steel box is attached to the lateral extrusion mechanism;

[0077] Then, each support arm on the control frame extends to work, and the electric permanent magnet chuck is attached to the corresponding support position of the upper steel box. Then, the electric permanent magnet chuck is adjusted to the magnetic attraction state to support and magnetically attract the upper steel box.

[0078] Step Six: Release the crawler crane hook and move it away. Move the traveling beam and hoist to directly above the upper steel box. Use the hoist to make a preliminary connection for the upper steel box. Then, under the control of the lifting hydraulic cylinder, gradually lower the inner sleeves of each outrigger, so that the upper steel box will also be lowered until the lower end face of the upper steel box is close to the welding distance with the upper end face of the lower steel box.

[0079] Step 7: Weld the upper steel box to the lower steel box. The upper steel box is erected and supported by the erection equipment throughout the welding process.

[0080] Step 8: After the upper steel box and the lower steel box are welded together, adjust the electric permanent magnet chuck to the non-magnetic state, then retract each support arm to the initial state, and use the hoist to lift the upper steel box; so that the upper steel box is removed from the lateral compression mechanism.

[0081] Step 9: Then control the rotating drive unit to control the rotating beams, so that each rotating beam opens, and then the hoist works to lower the upper steel box into the construction trench section;

[0082] Step 10: Loosen the hoist hook, retract the inner sleeves of each outrigger to the lowest position using the lifting hydraulic cylinder, then remove the bolts connecting the erection equipment and the lifting base, separate the erection equipment from the lifting base, and drive the erection equipment away from the side of the lifting base to complete the support and erection work of the upper steel box.

[0083] The above operations facilitate the assembly and connection of the diaphragm wall steel box. Specific implementation examples:

[0085] This invention discloses a mobile support device; the support device disclosed in this invention mainly includes an erection device and a lifting base; this invention is mainly used for the assembly of steel boxes, which include an upper steel box and a lower steel box. In actual operation, this invention is also mainly used for the hoisting and docking of the upper steel box and the lower steel box.

[0086] Furthermore, the support equipment disclosed in this invention also needs to be used in conjunction with a crawler crane 20.

[0087] Meanwhile, support arms are called different support arms depending on their installation location. Support arms installed on the front frame are called front support arms, and support arms installed on the side frame are called side support arms.

[0088] The erection equipment structure disclosed in this invention is as follows: Figures 1-4 As shown, it mainly includes a multi-functional wheel set 1, a traveling outrigger 2, a fixed flange 3, a fixed outrigger 4, a frame 5, a lateral support arm 6, a forward support arm 7, an outer rotating motor 8, an outer rotating beam 9, an inner rotating motor 10, an inner rotating beam 11, a column 12, a crossbeam 13, a traveling beam 14, a hoist 15, and a top platform 16.

[0089] The frame 5 of this invention is a steel truss structure, which is the main steel structure of the device and has a U-shaped shape; four walking legs 2 are fixed to the bottom side of the frame 5 and are used to install multi-functional wheel sets 1; the multi-functional wheel sets 1 are installed at the lower end of the walking legs 2 and have steering, walking and lifting functions. They are active suspension structures used for moving the equipment.

[0090] The multi-functional wheel set 1 uses existing technology. In actual use, the multi-functional walking module 305 can also use existing technology; it can use a drive device similar to that disclosed in 201910368421.2 - A straddle-type rail beam transporter and its usage method, or of course, other walking mechanisms; it has independent steering and height adjustment functions, and is responsible for the steering, height adjustment and walking functions of the frame.

[0091] Four fixed support legs 4 are fixed to the bottom of the frame 5, and a fixed flange 3 is welded below. The fixed flange 3 can be assembled and connected with the lifting base 17, so that the entire erection equipment can be placed on the lifting base 16. The top platform 16 is arranged on the top of the frame 5 and is the top working area of ​​the device. When the top of the device needs to be repaired or the steel box needs to be hooked and hoisted, it can be used for manual construction.

[0092] An outer rotary motor 8 is located on the outer side of the top, with its stator fixed to the top platform 16 and its rotor fixed to the outer rotary beam 9, driving the outer rotary beam 9 to rotate. An inner rotary motor 10 is located on the inner side of the top, with its stator fixed to the top platform 16 and its rotor fixed to the inner rotary beam 11, driving the inner rotary beam 11 to rotate. Both the outer rotary beam 9 and the inner rotary beam 11 are used for the erection of the upper steel box 19. A column 12 is fixed to the top of the frame 5, and a crossbeam 13 is fixed to the top. A traveling beam 14 is assembled with the crossbeam 13 and can travel along the crossbeam 13. A hoist 15 is assembled with the traveling beam 14 and can travel along the traveling beam 14.

[0093] The hoist 15 and the traveling beam 14 are used for hoisting the upper steel box 19.

[0094] Lateral support arms 6 and forward support arms 7 are respectively arranged on the left, right, and front sides of the device, and their structures are identical. Figures 5-6 As shown, the structure of the lateral support arm 6 is described as an example: The lateral support arm 6 consists of an outer support arm cylinder 601, a hydraulic cylinder 602, an inner support arm cylinder 603, and an electrically controlled permanent magnet chuck 604. The hydraulic cylinder 602 is hinged to the outer support arm cylinder 601 and the inner support arm cylinder 603, respectively, and can drive the inner support arm cylinder 603 to extend and retract along the outer support arm cylinder 601. The electrically controlled permanent magnet chuck 604 is an electrically controlled permanent magnet, mainly used to support and magnetically attract the upper steel box 19.

[0095] The structure of the lifting base 17 is as follows Figure 7As shown, it mainly consists of anchor plate 1701, outrigger sleeve 1702, C-shaped connecting rod 1703, straight connecting rod 1704, lifting hydraulic cylinder 1705, outrigger inner sleeve 1706, and connecting plate 1707. Anchor plate 1701 is used to anchor the lifting base 17 to the ground. C-shaped connecting rod 1703 and straight connecting rod 1704 are used to connect the four outrigger sleeves 1702. The four outrigger inner sleeves 1706 are correspondingly assembled with the four outrigger sleeves 1702. The two ends of the lifting hydraulic cylinder 1705 are respectively... Hinged to the outrigger outer sleeve 1702 and the outrigger inner sleeve 1706, the outrigger inner sleeve 1706 can move up and down along the outrigger outer sleeve 1702 under the drive of the lifting hydraulic cylinder 1705; the connecting plate 1707 is fixed above the outrigger inner sleeve 1706 and can be connected to the fixing flange 3 by bolts, thereby fixing the entire erection equipment and the lifting base 17; after the erection equipment and the lifting base 17 are fixedly connected, the erection equipment can move up and down synchronously under the drive of the lifting hydraulic cylinder 1705.

[0096] The upper steel box 19 structure is as follows Figure 8 As shown, it is mainly composed of a steel box body 1901, brackets 1902, and lifting lugs 1903. The brackets 1902 and lifting lugs 1903 are welded to the left and right sides of the top of the steel box body 1901, with two on each side. The brackets 1902 are used to support and erect the steel box, and the lifting lugs 1903 are used to lift the steel box.

[0097] A method for supporting and erecting diaphragm wall steel box girder based on mobile erection equipment is as follows:

[0098] Step 1: After the lower steel box 18 is in place within the trench section, install the lifting base 17 on the construction site, anchor the anchor plate 1701 to the pre-set anchor bolts, and fix the lifting base 17. Then, retract the inner sleeves 1706 of each outrigger to their lowest position. Figure 9 As shown;

[0099] Step Two: Drive the erection equipment from the side of the lifting base 17 to directly above it. Use the lifting function of the multi-functional wheel set 1 to adjust the four fixing flanges 3 to be aligned with the corresponding connecting plates 1707. Then, connect them with bolts to fix the erection equipment to the lifting base 17 as a whole. Figure 10 As shown;

[0100] Step 3: Using the lifting hydraulic cylinder 1705, raise the inner sleeves 1706 of each outrigger to their highest position, thereby simultaneously raising the erection equipment. Then, rotate the outer rotating beam 9 to face forward. Figure 11 As shown;

[0101] Step 4: In front of the erected equipment, use the crawler crane 20 to lift the upper steel box 19 directly above the lower steel box 18, and then rotate the outer rotating beam 9 back to its original position. Figure 12 As shown, at this time, the lower surface of the corbel 1902 is higher than the upper surfaces of the outer rotating beam 9 and the inner rotating beam 11;

[0102] Step 5: Using the crawler crane 20, gradually lower and adjust the position of the upper steel box 19 until the bracket 1902 is placed on the outer rotating beam 9 and the inner rotating beam 11. At this point, the weight of the upper steel box 19 is entirely borne by the outer rotating beam 9 and the inner rotating beam 11. Then, the lateral support arm 6 and the forward support arm 7 extend to attach the electrically controlled permanent magnet chuck 604 and electrically controlled permanent magnet chuck 704 to their corresponding support positions on the upper steel box 19. Next, adjust the electrically controlled permanent magnet chuck 604 and electrically controlled permanent magnet chuck 704 to their magnetic attraction state to support and magnetically attract the upper steel box 19, thereby forming a stable support for the upper steel box 19. Figure 13 As shown;

[0103] Step Six: Release the hook of the crawler crane 17 and move it away. Move the traveling beam 14 and hoist 15 to directly above the upper steel box 19. Use the hoist 15 to perform initial hoisting and connection of the upper steel box 19. Then, under the control of the lifting hydraulic cylinder 1705, gradually lower the inner sleeves 1706 of each outrigger, thereby lowering the upper steel box 19 together until the lower end face of the upper steel box 19 is close to the welding distance with the upper end face of the lower steel box 18. Figure 14 As shown;

[0104] Step 7: Weld the upper steel box 19 and the lower steel box 18 together. The upper steel box 19 is erected and supported by the erection equipment throughout the welding process.

[0105] Step 8: After the upper steel box 19 and the lower steel box 18 are welded together, adjust the electrically controlled permanent magnet chuck 604 and 704 to a non-magnetic state. Then, retract the lateral support arm 6 and the forward support arm 7 to their initial state. Use the hoist 15 to lift the upper steel box 19 (at this time, the upper steel box 19 has been welded to the lower steel box 18), so that the bracket 1902 is detached from the outer rotating beam 9 and the inner rotating beam 11. The weight of the steel box is entirely borne by the hoist 15. Figure 15 As shown;

[0106] Step Nine: The outer rotary motor 8 and the inner rotary motor 10 operate, turning the outer rotary beam 9 and the inner rotary beam 11 to the front and rear of the erecting equipment, respectively. Then, the hoist 15 operates to lower the upper steel box 19 into the construction trench. Figure 16 As shown;

[0107] Step 10: Release the hook of hoist 15, retract the inner sleeves 1706 of each outrigger to their lowest position using the lifting hydraulic cylinder 1705, then remove the bolts connecting the erection equipment to the lifting base 17, disassemble the erection equipment from the lifting base 17, and drive the erection equipment away from the side of the lifting base 17, completing the support and erection work of the upper steel box 19. Figure 17 As shown.

[0108] The mobile support equipment disclosed in this invention is mainly used to solve the problems of poor adaptability, low safety, impact on construction quality, and low utilization rate of lifting equipment in existing diaphragm wall steel box support and erection schemes. Through the above-mentioned support equipment, this invention can effectively ensure the safety, reliability, and adaptability of steel box construction, thereby improving construction quality and efficiency.

[0109] The erection equipment adopts a dual operation mode of mobile and fixed operation. It uses multi-functional wheel sets for flexible relocation of the equipment and fixed outriggers for support and erection work, which increases the flexibility of the equipment movement and the reliability of the erection operation. It uses a rotatable erection beam, which can replace the crawler crane in the erection function during the steel box welding process. It uses a mobile overhead crane, which can replace the crawler crane in the lifting function during the lowering of the steel box, which not only improves the equipment utilization rate of the crawler crane, but also increases the functionality of the erection equipment.

[0110] A telescopic arm with an electrically controlled permanent magnet chuck is used as the support actuator for the steel box, providing support or attraction force to the steel box as needed, thus providing rigid support for the steel box;

[0111] The erection equipment can provide effective rigid support for the steel box, improve the weather adaptability, safety and reliability of the steel box docking construction, and effectively ensure the construction progress.

[0112] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A mobile support device, characterized in that, This includes the erection equipment and the lifting base; The erection equipment includes a mobile base, a frame is provided on the mobile base, and a hoisting mechanism is provided at the end of the frame away from the mobile base; The frame is also equipped with a lateral compression mechanism; The frame is equipped with a lateral limiting mechanism at the end away from the movable base; The lateral compression mechanism includes multiple support arms mounted on the frame; each support arm includes an outer support arm cylinder, a hydraulic cylinder, an inner support arm cylinder, and an electrically controlled permanent magnet chuck; the hydraulic cylinder is hinged to both the outer and inner support arm cylinders, and the inner support arm cylinder can move along the outer support arm cylinder. The lateral limiting mechanism includes individual limiting components mounted on the frame, each individual limiting component including a rotating beam mounted on the frame, the rotating beam being connected to a rotation drive unit; an individual limiting component is provided on each side of the frame; the two individual limiting components are distributed in parallel with relative intervals. The hoisting mechanism includes a support frame mounted on a frame, and a hoisting hoist is mounted on the support frame; the support frame includes two lateral supports; the upper ends of the two lateral supports are connected by a traveling beam; each lateral support includes a column mounted on the frame, and a crossbeam is mounted on the column, and the traveling beam is connected to the crossbeam; the hoisting hoist is connected to the traveling beam.

2. The mobile support equipment according to claim 1, characterized in that, The mobile base includes walking legs, which are connected to a multi-functional wheel set.

3. The mobile support equipment according to claim 1, characterized in that, The frame is connected to the mobile base via a connecting mechanism, the connecting mechanism including fixed legs mounted on the frame; the frame is connected to the walking legs in the mobile base via the fixed legs.

4. A mobile support device according to claim 1, characterized in that, The frame includes a front frame and two side frames on either side of the front frame. The horizontal projection of the front frame and the two side frames forms a [ shape; both the front frame and the side frames are equipped with support arms.] 5. A mobile support device according to claim 1, characterized in that, The lifting base includes an anchor plate, an outer sleeve for the outriggers, a C-shaped connecting rod, a straight connecting rod, a lifting hydraulic cylinder, an inner sleeve for the outriggers, and a connecting plate; each inner sleeve for the outriggers corresponds to an outer sleeve for the outriggers, and the two ends of the lifting hydraulic cylinder are respectively hinged to the outer sleeve for the outriggers and the inner sleeve for the outriggers, so that the inner sleeve for the outriggers can move up and down along the outer sleeve for the outriggers; the connecting plate is fixed above the inner sleeve for the outriggers.

6. A mobile support device according to claim 1, characterized in that, The frame is provided with a top platform at the end away from the mobile base, and the hoisting mechanism and the lateral limiting mechanism are both located on the top platform.

7. A construction method for diaphragm wall steel box support using the mobile support equipment as described in any one of claims 1-6, characterized in that... ； The construction method includes the following steps: Step 1: After the lower steel box has been positioned in the channel section, install the lifting base on the construction site, and at the same time retract the inner sleeves of each outrigger in the lifting base to the lowest position. Step 2: Drive the erection equipment from the side of the lifting base to directly above the lifting base, and then connect the erection equipment to the lifting base; Step 3: By controlling the lifting base, the inner sleeves of each outrigger in the lifting base are raised to the highest position, thereby driving the erection equipment to rise synchronously, and then the corresponding rotating beam in the lateral compression mechanism is opened. Step 4: In front of the equipment, use a crawler crane to lift the upper steel box directly above the lower steel box, and then rotate the opened rotating beam back to its original position. Step 5: Use a crawler crane to gradually lower the upper steel box and adjust its position until the upper steel box is attached to the lateral extrusion mechanism; Then, each support arm on the control frame extends to work, and the electric permanent magnet chuck is attached to the corresponding support position of the upper steel box. Then, the electric permanent magnet chuck is adjusted to the magnetic attraction state to support and magnetically attract the upper steel box. Step Six: Release the crawler crane hook and move it away. Move the traveling beam and hoist to directly above the upper steel box. Use the hoist to make a preliminary connection for the upper steel box. Then, under the control of the lifting hydraulic cylinder, gradually lower the inner sleeves of each outrigger, so that the upper steel box will also be lowered until the lower end face of the upper steel box is close to the welding distance with the upper end face of the lower steel box. Step 7: Weld the upper steel box to the lower steel box. The upper steel box is erected and supported by the erection equipment throughout the welding process. Step 8: After the upper steel box and the lower steel box are welded together, adjust the electric permanent magnet chuck to the non-magnetic state, then retract each support arm to the initial state, and use the hoist to lift the upper steel box; so that the upper steel box is removed from the lateral compression mechanism. Step 9: Then control the rotating drive unit to control the rotating beams, so that each rotating beam opens, and then the hoist works to lower the upper steel box into the construction trench section; Step 10: Loosen the hoist hook, retract the inner sleeves of each outrigger to the lowest position using the lifting hydraulic cylinder, then remove the bolts connecting the erection equipment and the lifting base, separate the erection equipment from the lifting base, and drive the erection equipment away from the side of the lifting base to complete the support and erection work of the upper steel box.

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