An ironing device for assisting the anti-flow-around iron sheet to enter the groove and its usage method

Abstract

The present invention relates to the technical field of diaphragm wall construction, and specifically refers to an ironing device for assisting the anti-bypass iron sheet to enter the groove and its use method, including a frame, a mounting frame and ironing wheels. The frame is in an "L" shape, and the bottom of the open end of the frame abuts against the H-shaped steel; the mounting frame is an arc-shaped steel plate, which is fixed to the open end of the frame, and the top of the mounting frame extends outside the frame; at least one ironing wheel is provided, and the ironing wheel is fixed to the outer end of the mounting frame through a connecting rod, and it uses the kinetic energy of the cage falling into the groove during the hoisting process to automatically iron the anti-bypass iron sheet, reducing the time for the diaphragm wall cage to enter the groove, and improving the overall construction efficiency and safety performance of the diaphragm wall.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm wall construction, and specifically refers to an ironing device for assisting the anti-bypass iron sheet to enter the groove and its usage method. Background Art

[0002] The width and depth of each diaphragm wall are carefully designed separately by the design unit, and are poured into the groove successively and formed respectively, and the front and back lap joints form a closed underground retaining structure. To prevent bypass during the pouring of the diaphragm wall wall panel, galvanized thin iron sheets can be pre-welded on the outer side of the side plates of the H-shaped steel during the processing of the steel reinforcement cage. Because the thickness of the galvanized thin iron sheet is relatively thin, it cannot be welded and fixed well. The welding process is prone to welding through the iron sheet and damaging the integrity. Moreover, these galvanized thin iron sheets welded on both sides of the steel reinforcement cage are prone to deformation due to reasons such as hoisting, wind blowing, and scraping during slotting. The deformed iron sheet affects the smooth entry of the steel reinforcement cage into the groove.

[0003] Chinese invention patent with the publication number CN107687166A discloses an anti-bypass and anti-seepage I-beam joint structure and construction method for diaphragm walls. The joint structure consists of an I-beam formed by welding two wing plate steel sections and one web steel section, a grout stop iron sheet, a rubber water stop belt, a sealing vertical bar at the end corner of the subsequent groove section, and a cutting edge at the bottom of the I-beam joint, etc.; the inner side of the wing plate steel section of the I-beam joint is welded to the horizontal distribution bars of the previous groove section, and the grout stop iron sheet is welded to the outer side of the wing plate steel section; the rubber water stop belt is bonded to the inner side of the wing plate of the subsequent groove section I-beam using an adhesive; and a sealing vertical bar is welded at the end corner of the steel reinforcement cage of the later groove section.

[0004] For the above patent, the joint structure has good integrity and simple construction, effectively prevents the bypass of concrete and has good anti-seepage effect at the joint, and is suitable for the joint connection of ultra-deep diaphragm walls. However, its construction time is relatively long and the risk during the hoisting process is relatively high. Summary of the Invention

[0005] In order to overcome the above problems, the present invention proposes an ironing device for assisting the anti-bypass iron sheet to enter the groove and its usage method, which uses the kinetic energy during the hoisting process of the steel reinforcement cage to automatically iron the anti-bypass iron sheet, reduces the time for the steel reinforcement cage of the diaphragm wall to enter the groove, and improves the overall construction efficiency and safety performance of the diaphragm wall.

[0006] The technical solution of the present invention is as follows:

[0007] An ironing device for assisting the anti-bypass iron sheet to enter the groove includes a frame, a mounting frame, and ironing wheels. The frame is in an "L" shape, and the bottom of the open end of the frame abuts against the H-shaped steel; the mounting frame is an arc-shaped steel plate, the mounting frame is fixed to the open end of the frame, and the top of the mounting frame extends outside the frame; at least one ironing wheel is provided, and the ironing wheel is fixed to the outer end of the mounting frame through a connecting rod.

[0008] Further, a buffer bend and a spring are provided at the bottom of the mounting frame. The buffer bend is U-shaped and horizontally arranged below the mounting frame. The open end at the bottom of the buffer bend is fixed to the top of the hooked section of the frame, and the open end at the top of the buffer bend is fixed to the side wall at the bottom of the mounting frame. The top of the spring is fixed to the bottom of the mounting frame, and the bottom of the spring is fixed to the open end at the bottom of the buffer bend.

[0009] Further, when multiple ironing wheels are provided, the distances between the multiple ironing wheels from top to bottom and the H-shaped steel decrease in sequence, and the distance between the lowermost ironing wheel and the H-shaped steel is equal to the thickness of the iron sheet.

[0010] Further, at least one anchoring bolt is fixed to the side wall of the mounting frame, and a steel wire rope is fixed between the anchoring bolts corresponding to the two ironing devices.

[0011] Further, an auxiliary moving device is further included. The auxiliary moving device includes a hand-pushing handrail, a rail clamping roller, and a moving wheel. The hand-pushing handrail is fixed to the outside of the frame. The rail clamping roller is rotatably connected to the inside of the frame and is in rolling connection with the H-shaped steel. The moving wheel is rotatably connected to the bottom of the frame and is in rolling connection with the lower plane.

[0012] Further, a counterweight cavity is further included. The counterweight cavity is a semi-closed structure formed by the inner wall of the frame and the bottom of the buffer bend. Water is filled in the counterweight cavity, and at least one retaining rib is fixed to the inner wall of the counterweight cavity.

[0013] Further, rubber pads are fixed to both the bottom of the frame and the bottom of the spring.

[0014] A using method of an ironing device for an ironing device that uses auxiliary anti-flow-around iron sheets to enter the groove includes the following steps:

[0015] Step S10: Hoist the diaphragm wall reinforcement cage into place and lower the diaphragm wall reinforcement cage into the groove.

[0016] Step S20: Install and adjust the ironing device.

[0017] Step S30: Inject water into the counterweight cavity.

[0018] Step S40: Continue to lower the diaphragm wall reinforcement cage. During the lowering process, the ironing device ensures the smooth entry of the diaphragm wall reinforcement cage into the groove on the outside of the diaphragm wall reinforcement cage.

[0019] Further, the step S20 includes the following steps:

[0020] Step S21: Position the ironing device so that the rail clamping rollers are aligned with the rails of the H-shaped steels on both sides of the diaphragm wall.

[0021] Step S22: Lay the rubber pads.

[0022] Step S23: Adjust the position of the ironing device to ensure that the lowermost ironing wheel fits the galvanized iron sheet of the diaphragm wall reinforcement cage.

[0023] Step S24: Use steel wire ropes to cross-fix the anchor bolts of the two ironing devices.

[0024] Furthermore, step S40 includes the following steps:

[0025] Step S41: Develop a plan for the crawler crane to translate the reinforcement cage. When the influence range of the reinforcement cage being inserted into the groove is small, the crawler crane uses the method of single-sided translation and positioning; when the influence range is large, the crawler crane uses the method of translating from both sides to the middle for positioning.

[0026] Step S42: Calculate the insertion depth.

[0027] Step S43: Carry out the translation construction.

[0028] Step S44: Fix the reinforcement cage that has been inserted into the groove in advance, remove the ironing device, remove the hoisting equipment of the crawler crane, and switch to the gantry crane for force-bearing hoisting.

[0029] Step S45: The gantry crane carries the reinforcement cage and translates it into position.

[0030] Step S46: Install the ironing device and slowly lower the reinforcement cage to the designated position.

[0031] The present invention has the following beneficial effects:

[0032] 1. The present invention utilizes the kinetic energy of the reinforcement cage falling into the groove during the hoisting process to automatically iron the anti-flow-around iron sheet, reducing the time for the diaphragm wall reinforcement cage to be inserted into the groove, and improving the overall construction efficiency and safety performance of the diaphragm wall.

[0033] 2. When hoisting the reinforcement cage of the diaphragm wall, it successively passes through the ironing wheel shafts of the upper, middle, and lower layers. The uppermost row of ironing wheel shafts serves to gather the iron sheet, making the unfolded galvanized iron sheet return to the vicinity of the reinforcement cage; the middle layer of ironing wheel shafts extends the already gathered iron sheet towards the middle of the diaphragm wall reinforcement cage to prevent the iron sheet from bending; the lower row of ironing wheel shafts irons and presses the iron sheet onto the diaphragm wall reinforcement cage.

[0034] 3. The present invention combines the buffer bend, spring, counterweight cavity, and retaining sill to increase the overall shock absorption capacity of the ironing device, avoiding the situation of vibration or even jumping and dragging of the ironing device during the hoisting process of the reinforcement cage. Description of the Drawings

[0035] Figure 1 is the structural schematic diagram of the present invention;

[0036] Figure 2 is the schematic diagram of the installation state of the present invention;

[0037] Figure 3 is Figure 2 a partial enlarged view;

[0038] Figure 4 is a schematic diagram of the hoisting process of the steel reinforcement cage.

[0039] The labels in the drawings are:

[0040] 1. Frame; 101. Hook section; 2. Installation frame; 201. Buffer bend; 202. Spring; 3. Smoothing wheel; 301. Connecting rod; 4. Anchor bolt; 401. Steel wire rope; 5. Handrail for pushing; 6. Rail clamping roller; 7. Moving wheel; 8. H-shaped steel; 9. Rubber pad; 10. Counterweight cavity; 1001. Retaining ridge; 11. Crawler crane; 12. Gantry crane; 13. Gantry crane track; 14. Structure. Specific embodiments

[0041] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0042] As Figures 1-4 shown, the smoothing device for assisting the anti-flow-around iron sheet to enter the groove in this embodiment includes a frame 1, an installation frame 2 and a smoothing wheel 3. The frame 1 is in an "L" shape, and the bottom of the open end of the frame 1 abuts against the H-shaped steel 8; the installation frame 2 is an arc-shaped steel plate, the installation frame 2 is fixed to the open end of the frame 1, and the top of the installation frame 2 extends outside the frame 1; at least one smoothing wheel 3 is provided, and the smoothing wheel 3 is fixed to the outer end of the installation frame 2 through a connecting rod 301.

[0043] The present invention makes full use of the kinetic energy during the hoisting of the steel reinforcement cage into the groove, and automatically smooths the anti-flow-around iron sheet through the kinetic energy of the cage falling into the groove, so as to reduce the time for the steel reinforcement cage of the diaphragm wall to enter the groove and improve the overall construction efficiency of the diaphragm wall; it protects the integrity of the anti-flow-around iron sheet and ensures that the anti-flow-around effect meets the design requirements, guaranteeing the construction quality of the diaphragm wall.

[0044] Furthermore, a buffer bend 201 and a spring 202 are provided at the bottom of the installation frame 2. The buffer bend 201 is in a U shape, the buffer bend 201 is horizontally arranged below the installation frame 2, the open end at the bottom of the buffer bend 201 is fixed to the top of the hook section 101 of the frame 1, and the open end at the top of the buffer bend 201 is fixed to the side wall at the bottom of the installation frame 2; the top of the spring 202 is fixed to the bottom of the installation frame 2, and the bottom of the spring 202 is fixed to the open end at the bottom of the buffer bend 201.

[0045] The buffer bend 201 and the spring 202 can reduce the vibration generated by the installation frame 2 during construction and avoid the situation of vibration or even jumping and dragging of the smoothing device during the hoisting of the steel reinforcement cage.

[0046] Furthermore, when multiple ironing wheels 3 are provided, the distances between the multiple ironing wheels 3 from top to bottom and the H-shaped steel 8 decrease in sequence, and the distance between the lowermost ironing wheel 3 and the H-shaped steel 8 is equal to the thickness of the iron sheet.

[0047] The ironing wheel 3 can be a rubber wheel or a steel pipe with a smooth surface covered by steel bars. When hoisting the steel reinforcement cage of the diaphragm wall, it passes through the upper, middle, and lower three rows of ironing wheels 3 in sequence. The uppermost row of ironing wheels 3 serves to subdue the iron sheet and make the unfolded white iron sheet return to the vicinity of the steel reinforcement cage; the middle row of ironing wheels 3 is used to extend the already subdued iron sheet towards the middle of the diaphragm wall steel reinforcement cage to prevent the iron sheet from being bent; the lower row of ironing wheels 3 is used to iron and press the iron sheet tightly onto the steel reinforcement cage of the diaphragm wall. Since the iron sheet may warp after ironing, the distance between the two lowermost ironing wheels 3 cannot exceed 1 meter, and their positions can only be close to the iron sheet without pressing into the iron sheet, otherwise it will cause the iron sheet to deform and affect the overall hoisting of the steel reinforcement cage.

[0048] Furthermore, at least one anchor bolt 4 is fixed to the side wall of the mounting frame 2, and a steel wire rope 401 is fixed between the anchor bolts 4 corresponding to the two ironing devices.

[0049] On each side of each mounting frame 2, a set of pull - type anchor bolts 4 is arranged up and down for fixing the pull - type steel wire rope 401. Two steel wire ropes 401 are cross - fixed between the two ironing devices on each side, so that the ironing wheels 3 in the lower row of the ironing device are firmly arranged outside the diaphragm wall, preventing the ironing device from bouncing open or toppling during the hoisting process of the diaphragm wall, and also playing a certain shock - absorbing role.

[0050] Furthermore, it further includes an auxiliary moving device. The auxiliary moving device includes a hand - push handrail 5, a rail - clamping roller 6, and a moving wheel 7. The hand - push handrail 5 is fixed to the outside of the frame 1; the rail - clamping roller 6 is rotatably connected to the inside of the frame 1, and the rail - clamping roller 6 is in rolling connection with the H - shaped steel 8; the moving wheel 7 is rotatably connected to the bottom of the frame 1, and the moving wheel 7 is in rolling connection with the lower plane.

[0051] The anchor bolt 4 is L - shaped. The upper anchor bolt 4 is arranged inward, and a rail - clamping roller 6 is fixed to the inward end of this anchor bolt 4. The lower anchor bolt 4 is arranged outward, and a hand - push handrail 5 is fixed to the outward end of this anchor bolt 4; on the inner side of each ironing device, a set of rail - clamping rollers 6 is arranged up and down. The rail - clamping rollers 6 are firmly fixed to the channel steels on both sides of the diaphragm wall, fixing the ironing device at the positions where the iron sheets on both ends of the diaphragm wall steel reinforcement cage need to be ironed, and preventing the ironing device from bouncing open or toppling; the moving wheel 7 is for facilitating the movement and adjustment of the ironing device. When moving and adjusting the ironing device, corresponding operations are carried out through the hand - push handrail 5.

[0052] Furthermore, it further includes a counterweight cavity 10. The counterweight cavity 10 is a semi - enclosed structure formed by the inner wall of the frame 1 and the bottom of the buffer bend 201, and water is filled in the counterweight cavity 10.

[0053] The counterweight cavity 10 can increase the overall weight of the ironing device to prevent the ironing device from vibrating or even jumping during the hoisting process of the steel cage, so as to ensure the stability of the hoisting operation.

[0054] Furthermore, at least one retaining rib 1001 is fixed to the inner wall of the counterweight cavity 10.

[0055] The retaining rib 1001 can not only play a role in shock absorption and energy dissipation, but also prevent excessive loss of water in the counterweight cavity 10 during the hoisting process of the steel cage, resulting in insufficient counterweight.

[0056] Furthermore, rubber pads 9 are fixed to the bottom of the frame 1 and the bottom of the spring 202 respectively.

[0057] The rubber pads 9 can further reduce the vibration of the ironing device during the hoisting process of the steel cage.

[0058] The usage method of the ironing device in this embodiment, which is used for the ironing device that assists in preventing the flow-around iron sheet from entering the groove, includes the following steps:

[0059] Step S10: Hoist the diaphragm wall steel cage into place and lower the diaphragm wall steel cage into the groove.

[0060] Step S20: Install and adjust the ironing device.

[0061] Step S21: Position the ironing device so that the clamping rail rollers 6 are aligned with the clamping rails of the H-shaped steel 8 on both sides of the diaphragm wall.

[0062] Step S22: Lay the rubber pads 9.

[0063] Step S23: Adjust the position of the ironing device to ensure that the lowermost ironing wheel 3 is in contact with the white iron sheet of the diaphragm wall steel cage.

[0064] Step S24: Use the steel wire rope 401 to cross-fix the anchor bolts 4 of the two ironing devices.

[0065] Step S30: Inject water into the counterweight cavity 10.

[0066] Fill the counterweight cavity 10 with water up to the vicinity of the retaining rib 1001. When reusing the ironing device, pay attention to observing and replenishing the water in the counterweight cavity 10. Under the combined action of the water level control and the splash-proof retaining rib 1001, the counterweight cavity 10 plays a role in shock absorption and energy dissipation for the ironing device.

[0067] Step S40: Continue to lower the diaphragm wall steel cage. During the lowering process, the ironing device is on the outside of the diaphragm wall steel cage to ensure the smooth lowering of the diaphragm wall steel cage into the groove.

[0068] During the lowering process, the ironing device comes into play. The ironing wheel 3 on the top layer subdues the iron sheet, the ironing wheel 3 on the middle layer or several middle layers extends the iron sheet, and the ironing wheel 3 on the bottom layer irons and adheres the iron sheet to the outside of the diaphragm wall reinforcement cage to ensure the smooth insertion of the diaphragm wall reinforcement cage into the trench.

[0069] Step S41: Develop a plan for the crawler crane 11 to translate the reinforcement cage. When the construction influence range of the reinforcement cage insertion into the trench is small, the crawler crane 11 uses the method of single-side translation and positioning; when the influence range is large, the crawler crane 11 uses the method of translating and positioning from both sides to the middle.

[0070] The method of the crawler crane 11 translating and positioning from both sides to the middle can avoid situations such as the collapse of the middle section of the diaphragm wall caused by the long-term non-construction of the middle section of the diaphragm wall.

[0071] Step S42: Calculate the insertion depth.

[0072] For example, for the diaphragm wall under the bridge structure, the insertion depth should ensure that the part exposed above the ground is more than 2m smaller than the bridge clearance to ensure the construction space and safety requirements of the gantry crane 12. The depth of the trench section that needs to be translated should be more than 2m greater than the insertion depth. Before translation, depth detection and necessary slag cleaning in the hole should be done to avoid translation obstacles such as scraping the bottom during the translation process.

[0073] Step S43: Carry out the translation construction.

[0074] The length of the reinforcement cage inserted into the trench in advance should not exceed three diaphragm walls to reduce the translation risk and avoid the situation of the diaphragm wall collapsing during the translation process or the encroachment caused by translation scraping. Before the translation is completed, the alignment and mud quality control of the trench section that needs to be translated should be done well to prevent the collapse of the hole and ensure smooth translation. The mud concentration in the forward direction of the diaphragm wall translation should be smaller than that at the back. By controlling the pressure difference between the front and back of the diaphragm wall, the anti-bypass iron sheet of the diaphragm wall is pressed on the reinforcement cage to prevent it from turning outwards during the translation process, which affects the smooth progress of the translation and also reduces the translation resistance. Because the weight of the diaphragm wall reinforcement cage plus the lifting equipment is usually about 50 tons, the gantry crane 12 for lifting and translation can be a large double-girder gantry crane or two qualified gantry cranes 12 can be used in cooperation. The rated load of the gantry crane 12 should not be less than 2 times the total weight of the reinforcement cage plus the lifting equipment.

[0075] Step S44: Fix the reinforcement cage inserted into the trench in advance, remove the ironing device, remove the lifting equipment of the crawler crane 11, and switch the force-bearing of the gantry crane 12 for lifting.

[0076] Step S45: The gantry crane 12 carries the reinforcement cage and translates it into position.

[0077] Step S46: Install the ironing device and slowly lower the reinforcement cage to the designated position.

[0078] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. An ironing device for assisting the smooth entry of anti-flow-around iron sheets into the groove, characterized in that, It includes a frame (1), a mounting bracket (2) and a leveling wheel (3). The frame (1) is in an "L" shape, and the bottom of the open end of the frame (1) abuts against the H-beam (8); the mounting bracket (2) is an arc-shaped steel plate, the mounting bracket (2) is fixed to the open end of the frame (1), and the top of the mounting bracket (2) extends outside the frame (1); at least one leveling wheel (3) is provided, and the leveling wheel (3) is fixed to the outer end of the mounting bracket (2) through a connecting rod (301). A buffer bend (201) and a spring (202) are provided at the bottom of the mounting bracket (2). The buffer bend (201) is in a U shape, the buffer bend (201) is horizontally arranged below the mounting bracket (2), the open end of the bottom of the buffer bend (201) is fixed to the top of the hooked section (101) of the frame (1), and the open end of the top of the buffer bend (201) is fixed to the bottom side wall of the mounting bracket (2); the top of the spring (202) is fixed to the bottom of the mounting bracket (2), and the bottom of the spring (202) is fixed to the open end of the bottom of the buffer bend (201). When multiple leveling wheels (3) are provided, the distances between the multiple leveling wheels (3) from top to bottom and the H-beam (8) decrease in sequence, and the distance between the lowermost leveling wheel (3) and the H-beam (8) is equal to the thickness of the iron sheet.

2. The ironing device for assisting the anti-flow-around iron sheet to enter the groove according to claim 1, characterized in that, At least one anchor bolt (4) is fixed to the side wall of the mounting bracket (2), and a steel wire rope (401) is fixed between the anchor bolts (4) corresponding to the two leveling devices.

3. The ironing device for assisting the anti-flow-around iron sheet to enter the groove according to claim 1, characterized in that, It further includes an auxiliary moving device, and the auxiliary moving device includes a handrail (5), a rail clamping roller (6) and a moving wheel (7). The handrail (5) is fixed to the outside of the frame (1); the rail clamping roller (6) is rotatably connected to the inside of the frame (1), and the rail clamping roller (6) is in rolling connection with the H-beam (8); the moving wheel (7) is rotatably connected to the bottom of the frame (1), and the moving wheel (7) is in rolling connection with the lower plane.

4. The ironing device for assisting the anti-flow-around iron sheet to enter the groove according to claim 1, characterized in that, It further includes a counterweight cavity (10), and the counterweight cavity (10) is a semi-closed structure formed by the inner wall of the frame (1) and the bottom of the buffer bend (201). Water is filled in the counterweight cavity (10), and at least one retaining rib (1001) is fixed to the inner wall of the counterweight cavity (10).

5. The ironing device for assisting the anti-flow-around iron sheet to enter the groove according to claim 1, characterized in that, Rubber pads (9) are fixed to both the bottom of the frame (1) and the bottom of the spring (202).

6. A method for using an ironing device, characterized in that, For using a leveling device for assisting in preventing the iron sheet from bypassing and flowing into the groove according to any one of claims 1-5, it includes the following steps: Step S10, hoist the diaphragm wall reinforcement cage into place and insert the diaphragm wall reinforcement cage into the groove. Step S20, install and adjust the leveling device. Step S30, inject water into the counterweight cavity (10). Step S40, continue to lower the diaphragm wall reinforcement cage. During the lowering process, the leveling device is on the outside of the diaphragm wall reinforcement cage to ensure that the diaphragm wall reinforcement cage smoothly enters the groove.

7. The usage method of an ironing device according to claim 6, characterized in that, The step S20 includes the following steps: Step S21, position the leveling device so that the rail clamping roller (6) aligns with the rail clamping of the H-beams (8) on both sides of the diaphragm wall. Step S22, lay the rubber pad (9). Step S23, adjust the position of the leveling device, and it is necessary to ensure that the lowermost leveling wheel (3) is in contact with the white iron sheet of the diaphragm wall reinforcement cage. Step S24, cross-fix the anchor bolts (4) of the two ironing devices using a wire rope (401).

8. The usage method of an ironing device as claimed in claim 6, characterized in that, The said step S40 includes the following steps: Step S41, formulate a plan for the crawler crane (11) to translate the steel reinforcement cage. When the influence range of the steel reinforcement cage entering the groove construction is small, the crawler crane (11) uses the method of single-sided translation and positioning; when the influence range is large, the crawler crane (11) uses the method of translating and positioning from both sides to the middle; Step S42, calculate the depth of entering the groove; Step S43, carry out the translation construction; Step S44, fix the steel reinforcement cage that has entered the groove in advance, remove the ironing device, remove the hoisting equipment of the crawler crane (11), and switch the force-bearing hoisting of the gantry crane (12); Step S45, the gantry crane (12) carries the steel reinforcement cage and translates it into position; Step S46, install the ironing device, and slowly lower the steel reinforcement cage to the designated position.

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