Multi-directional adjustable support auxiliary cast-in-place box girder cushion stone construction device and construction method

Abstract

The application relates to the field of bridge engineering construction, and relates to a multi-directional adjustable support auxiliary cast-in-place box girder cushion stone construction device and method. The multi-directional adjustable support auxiliary cast-in-place box girder cushion stone construction device comprises a formwork, a pay-off roller for winding a plastic film is rotatably arranged on the formwork, and a pull rod is slidably arranged on the side wall of the formwork; a fixing component is arranged on the pull rod and connected with one end of the plastic film away from the pay-off roller; and a driving component for driving the pull rod to move is arranged on the formwork. The multi-directional adjustable support auxiliary cast-in-place box girder cushion stone construction method comprises the following steps: on-site survey personnel accurately place the planar position and elevation of the support cushion stone according to design drawings; the cushion stone steel bars are subjected to rust removal treatment; a plurality of formworks are installed and fixed; a motor is started to coat the formwork with a film; a support is made; and the cushion stone concrete is poured. The application improves the low film coating efficiency of the staff.

Description

Construction device and construction method for multi-directional adjustable support for cast-in-place box girder pad stone Technical Field

[0001] This application relates to the field of bridge engineering construction, and in particular to a construction device and method for constructing cast-in-place box girder pad stones with multi-directional adjustable support. Background Technology

[0002] Currently, the pad stone is the most important connection for transferring loads between bridge components, the main carrier supporting the bridge deck, and an important component of the bridge. It is located at an important position at the connection point between the upper and lower structures of the bridge and can adjust for errors and deviations caused by construction between the piers and the bridge deck.

[0003] In related technologies, the construction steps for the foundation stone include: First, on-site surveyors need to accurately lay out the plane position and elevation of the foundation stone according to the design drawings, and use ink lines to mark the four sides of the foundation stone. Simultaneously, the longitudinal and transverse center axes of the pier body are measured and marked clearly and accurately on the pier body. Next, the reinforcement bars of the foundation stone are rust-removed, and the spacing and protective layer thickness are adjusted to ensure compliance with design and specification requirements. Then, the foundation stone formwork is installed and fixed. Next, concrete is poured and vibrated. Finally, the foundation stone is cured. Before pouring concrete, a layer of plastic film is attached to the foundation stone formwork to facilitate separation of the formwork from the foundation stone when it needs to be removed.

[0004] Regarding the aforementioned technologies, during the process of covering the stone pad templates with film, workers need to manually cover multiple stone pad templates with film, and after the stone pad templates are removed, they need to be re-covered with film, resulting in low film covering efficiency for workers. Summary of the Invention

[0005] To address the issue of low efficiency in film covering by workers, this application provides a construction device and method for constructing cast-in-place box girder pad stones with a multi-directional adjustable support.

[0006] Firstly, the construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone provided in this application adopts the following technical solution:

[0007] A construction device for cast-in-place box girder pad stones with a multi-directional adjustable support includes a template. A roll-up roller for winding plastic film is rotatably mounted on the template. A tie rod is slidably mounted on the side wall of the template. The length of the tie rod is the same as the length of the template and the tie rod slides along the width direction of the template. A fixing component is mounted on the tie rod and connected to the end of the plastic film away from the roll-up roller. A driving component for moving the tie rod is mounted on the template.

[0008] By adopting the above technical solution, when it is necessary to cover the template with film, it is only necessary to start the drive unit. The drive unit drives the pull rod to move, the pull rod drives the plastic film to move, and the unwinding roller unwinds the plastic film, so that the plastic film can cover the template. This reduces the occurrence of workers manually covering the template multiple times and improves the problem of low covering efficiency.

[0009] Preferably, the template has a cavity formed inside, and the unwinding roller is rotatably mounted on the inner wall of the cavity; a film unwinding port is horizontally opened on the side wall of the template on the same side as the pull rod, and the film unwinding port communicates with the cavity, so that the plastic film can extend to the outside of the template through the film unwinding port.

[0010] By adopting the above technical solution, the occurrence of pollution caused by placing plastic film rolls on the outside of the template is reduced, and the plastic film rolls are protected.

[0011] Preferably, the template has a vertical sliding groove that communicates with the receiving cavity on its side wall. The driving component includes a motor fixedly connected to the inner wall of the receiving cavity, a reciprocating screw rotatably mounted on the inner wall of the receiving cavity, and a driving rod sleeved on the reciprocating screw. The output shaft of the motor is fixedly connected to the reciprocating screw, the reciprocating screw is threadedly connected to the driving rod, the driving rod extends through the sliding groove to the outside of the template, and the driving rod is fixedly connected to the pull rod.

[0012] By adopting the above technical solution, the motor is started, which drives the reciprocating screw to rotate. The reciprocating screw drives the drive rod to move, and the drive rod drives the pull rod to move, thereby enabling the template to be covered with film, which is convenient for workers to operate.

[0013] Preferably, the template has a placement groove on its side wall, and the fixing component includes a fixing roller sleeved on the pull rod and rotatably connected to the pull rod, a gear sleeved on the fixing roller and fixedly connected to the fixing roller, and a rack placed in the placement groove; the rack can be moved to the outside of the placement groove, the rack can mesh with the gear, the template is equipped with a connecting component, and the drive rod can drive the rack to move through the connecting component.

[0014] By adopting the above technical solution, during the upward movement of the drive rod, the drive rod can drive the rack to move through the connecting component. When the rack meshes with the gear, the drive rod continues to move, driving the pull rod to move, which in turn drives the fixed roller to move. The fixed roller then drives the gear to move, causing the gear to rotate. The gear then drives the fixed roller to rotate, allowing the plastic film to wrap around the fixed roller. When the template needs to be re-coated, the drive rod moves downward, and the pull rod can then drive the plastic film to coat the template. This eliminates the need for manual fixing of the plastic film by workers, further improving the problem of low coating efficiency.

[0015] Preferably, the connecting component includes a push rod fixedly connected to the drive rod, a connecting rod passing through the inner wall of the placement groove, and a connecting spring fixedly connected to the inner wall of the placement groove; both the connecting rod and the connecting spring are fixedly connected to the rack; the connecting rod extends into the receiving cavity; a connecting inclined surface is formed on the end face of the connecting rod facing the push rod; the side of the push rod can contact the connecting inclined surface; a locking component for locking the connecting rod is installed on the inner wall of the receiving cavity.

[0016] By adopting the above technical solution, during the upward movement of the drive rod, the drive rod drives the push rod to move, the push rod pushes the connecting rod to move through the connecting inclined surface, and the connecting rod pushes the rack to move, so that the rack meshes with the gear. At this time, the connecting spring is stretched, and the locking component locks the connecting rod. When the drive rod moves downward, the rack can drive the gear to rotate, so that the rack and gear continue to mesh, and the plastic film is more firmly wrapped on the fixed roller.

[0017] Preferably, the locking component includes a locking block fixedly connected to the inner wall of the receiving cavity, a locking groove formed on the side wall of the locking block facing the connecting rod, a locking spring fixedly connected to the inner wall of the locking groove, a locking rod slidably placed in the locking groove, the locking rod being fixedly connected to the locking spring, and a positioning groove for inserting the locking rod formed on the side wall of the connecting rod; an unlocking component is installed on the inner wall of the receiving cavity, and the driving rod can drive the locking rod to disengage from the positioning groove through the unlocking component.

[0018] By adopting the above technical solution, during the movement of the connecting rod, the locking rod abuts against the connecting rod. At this time, the locking spring is compressed. When the locking rod is opposite to the positioning groove, the locking spring can pull the locking rod into the positioning groove, and the locking rod locks the connecting rod, which improves the stability of the meshing of the rack and gear.

[0019] Preferably, the unlocking component includes a first unlocking rod slidably mounted on the inner wall of the receiving cavity, a second unlocking rod rotatably mounted on the inner wall of the receiving cavity, and a third unlocking rod passing through the locking block; one end of the first unlocking rod is fixedly connected to a first pull plate, which can abut against the drive rod; the end of the first unlocking rod away from the first pull plate is fixedly connected to a second pull plate, which abuts against the second unlocking rod; the end of the second unlocking rod away from the second pull plate abuts against the third unlocking rod; the third unlocking rod extends into the locking groove; an unlocking groove for the third unlocking rod to be inserted is provided on the side wall of the locking rod; an unlocking inclined surface is formed on the inner wall of the unlocking groove near the locking spring, and the unlocking inclined surface can contact the side of the third unlocking rod.

[0020] By adopting the above technical solution, during the downward movement of the drive rod, when the drive rod contacts the first pull plate, the drive rod drives the first pull plate to move, the first pull plate drives the first unlocking rod to move, the first unlocking rod drives the second pull plate to move, the second pull plate drives the second unlocking rod to rotate, the second unlocking rod drives the third unlocking rod to move, and the third unlocking rod pushes the locking rod to move through the unlocking ramp, so that the locking rod disengages from the positioning groove. The connecting spring can then drive the rack to return to the initial position, making it convenient for the staff to continue using it next time.

[0021] Preferably, a cutting groove is provided on the side wall of the template, a cutter is placed in the cutting groove, the cutter can be moved to the outside of the template, and a transmission component is installed on the template, so that the first unlocking rod can drive the cutter to move through the transmission component.

[0022] By adopting the above technical solution, during the movement of the first unlocking rod, the first unlocking rod drives the cutter to move through the transmission component. The cutter can cut the plastic film, reducing the occurrence of manual cutting of the plastic film by the staff, and further improving the problem of low film covering efficiency of the staff.

[0023] Preferably, the transmission component includes a first transmission rod passing through the inner wall of the cutting groove, a transmission spring fixedly connected to the inner wall of the cutting groove, and a second transmission rod fixedly connected to the first unlocking rod; the first transmission rod and the transmission spring are both fixedly connected to the cutter, the first transmission rod extends into the receiving cavity, and a transmission inclined surface is formed on the end face of the first transmission rod facing the second transmission rod, the transmission inclined surface contacting the side of the second transmission rod.

[0024] By adopting the above technical solution, during the movement of the first unlocking rod, the first unlocking rod drives the second transmission rod to move, and the second transmission rod drives the first transmission rod to move by driving the transmission inclined plane. The first transmission rod can then drive the cutter to move. At this time, the transmission spring is stretched, which can cut the plastic film.

[0025] Secondly, the construction method for the cast-in-place box girder pad stone assisted by the multi-directional adjustable support provided in this application adopts the following technical solution.

[0026] The construction method for cast-in-place box girder pad stones assisted by multi-directional adjustable supports includes the following steps:

[0027] On-site surveyors accurately laid out the plan position and elevation of the supporting pad stones according to the design drawings;

[0028] Rust removal treatment was performed on the reinforcing bars of the foundation stone, and the spacing between the reinforcing bars and the thickness of the protective layer were adjusted.

[0029] Install multiple of the templates and fix the templates in place;

[0030] Start the motor to cover the template with film;

[0031] Fabricate the support frame and install the spherical support;

[0032] The foundation stone concrete is poured, and the concrete is vibrated and cured.

[0033] Remove the scaffolding and formwork.

[0034] By adopting the above technical solution, the number of operating steps for staff has been reduced, and the problem of low efficiency in film coating has been improved.

[0035] In summary, this application includes at least the following beneficial technical effects:

[0036] 1. By setting up a drive unit, a pull rod and an unwinding roller, when it is necessary to cover the template with film, only the drive unit needs to be activated. The drive unit drives the pull rod to move, the pull rod drives the plastic film to move, and the unwinding roller unwinds the plastic film, so that the plastic film can cover the template. This reduces the occurrence of workers manually covering the template multiple times and improves the problem of low covering efficiency of workers.

[0037] 2. This application reduces the occurrence of contamination caused by placing the plastic film roll outside the template by setting up a receiving cavity and a film dispensing port, thus protecting the plastic film roll;

[0038] 3. This application uses a motor, a reciprocating screw, and a drive rod. When the motor is started, it drives the reciprocating screw to rotate, which in turn drives the drive rod to move. The drive rod then drives the pull rod to move, thereby enabling the template to be covered with film, which is convenient for operators. Attached Figure Description

[0039] Figure 1 is a schematic diagram of the overall structure of the construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone according to an embodiment of this application.

[0040] Figure 2 is a schematic diagram of the structure of the driving component according to an embodiment of this application.

[0041] Figure 3 is a structural schematic diagram of the fixing component according to an embodiment of this application.

[0042] Figure 4 is a schematic diagram of the structure of the connecting component according to an embodiment of this application.

[0043] Figure 5 is a structural schematic diagram of the unlocking component according to an embodiment of this application.

[0044] Explanation of reference numerals in the attached drawings: 1. Template; 11. Unwinding roller; 12. Tie rod; 13. Receiving cavity; 14. Film feeding port; 141. Guide roller; 15. Sliding groove; 16. Placement groove; 17. Cutting groove; 18. Picking port; 2. Fixing component; 21. Fixing roller; 22. Gear; 23. Rack; 3. Driving component; 31. Motor; 32. Reciprocating screw; 33. Driving rod; 4. Connecting component; 41. Push rod; 42. Connecting rod; 421. Connecting inclined plane; 422. Fixed... 43. Position groove; 5. Connecting spring; 6. Locking component; 51. Locking block; 511. Locking groove; 52. Locking spring; 53. Locking rod; 531. Unlocking groove; 532. Unlocking ramp; 6. Unlocking component; 61. First unlocking rod; 611. First pull plate; 612. Second pull plate; 62. Second unlocking rod; 63. Third unlocking rod; 7. Cutter; 8. Transmission component; 81. First transmission rod; 811. Transmission ramp; 82. Transmission spring; 83. Second transmission rod. Detailed Implementation

[0045] The present application will be further described in detail below with reference to Figures 1-5.

[0046] This application discloses a construction device and method for a multi-directional adjustable support-assisted cast-in-place box girder pad stone. Referring to Figures 1 and 2, the construction device for a multi-directional adjustable support-assisted cast-in-place box girder pad stone includes a template 1, a fixing component 2, and a driving component 3. The template 1 is vertically arranged, and a receiving cavity 13 is formed inside the template 1. A horizontally arranged unwinding roller 11 is rotatably installed in the receiving cavity 13, and a plastic film is wound around the unwinding roller 11. A film unwinding port 14 is horizontally opened on the side wall of the template 1, and the film unwinding port 14 communicates with the receiving cavity 13. The plastic film can extend to the outside of the template 1 through the film unwinding port 14. A guide roller 141 is rotatably installed in the film unwinding port 14. The template 1 and the film unwinding port 14 are connected. A horizontally mounted pull rod 12 is slidably installed on the side wall of the template 1. The pull rod 12 is located below the film feeding port 14. The length of the pull rod 12 is the same as the length of the template 1. The driving component 3 is installed on the template 1 and can drive the pull rod 12 to move vertically. The fixing component 2 is installed on the pull rod 12 and is connected to the plastic film. The pull rod 12 drives the plastic film to move, so that the plastic film covers the template 1, thereby improving the problem of low film covering efficiency of workers. A pick-up port 18 is opened on the side wall of the template 1 away from the film feeding port 14, which can replace the unwinding roller 11.

[0047] Referring to Figures 2 and 3, a sliding groove 15 is vertically formed on the side wall of the template 1, and the sliding groove 15 communicates with the receiving cavity 13. The driving component 3 includes a motor 31, a reciprocating screw 32, and a driving rod 33. The motor 31 is fixedly connected to the inner wall of the receiving cavity 13, and the output shaft of the motor 31 is vertically downward. The reciprocating screw 32 is rotatably mounted on the inner bottom surface of the receiving cavity 13 and is vertically arranged. The top of the reciprocating screw 32 is fixedly connected to the output shaft of the motor 31. When the motor 31 is started, the motor 31 drives the reciprocating screw 32 to rotate. The driving rod 33 is sleeved on the reciprocating screw 32 and is threadedly connected to the reciprocating screw 32. The driving rod 33 is horizontally placed in the sliding groove 15 and fits against the inner wall of the sliding groove 15. The reciprocating screw 32 drives the driving rod 33 to move vertically. The driving rod 33 is fixedly connected to the pull rod 12, and the driving rod 33 drives the pull rod 12 to move, which is convenient for the operator to operate.

[0048] Referring to Figure 3, a placement groove 16 is vertically provided on the side wall of the template 1. The fixing component 2 includes a fixing roller 21, a gear 22, and a rack 23. The fixing roller 21 is sleeved on the pull rod 12 and is rotatably connected to the pull rod 12. The pull rod 12 drives the fixing roller 21 to move. The gear 22 is sleeved on the fixing roller 21 and is fixedly connected to the fixing roller 21. The fixing roller 21 drives the gear 22 to move. The rack 23 is vertically placed in the placement groove 16 and fits against the inner wall of the placement groove 16. A connecting component 4 is installed on the template 1. During the upward movement of the drive rod 33, the drive rod 33 can drive the rack 23 to move horizontally through the connecting component 4, so that the rack 23 can mesh with the gear 22. When the drive rod 33 moves downward, the rack 23 can make the gear 22 rotate. The gear 22 drives the fixing roller 21 to rotate, so that the plastic film can be wrapped around the fixing roller 21 without the need for manual fixing of the plastic film by the staff.

[0049] Referring to Figures 3 and 4, the connecting component 4 includes a push rod 41, a connecting rod 42, and a connecting spring 43. The push rod 41 is fixedly connected to the side wall of the drive rod 33 and is horizontally arranged. During the upward movement of the drive rod 33, the drive rod 33 drives the push rod 41 to move. The connecting rod 42 is horizontally inserted through the inner wall of the placement groove 16. The connecting rod 42 is fixedly connected to the rack 23. The connecting rod 42 is perpendicular to the push rod 41 and extends into the receiving cavity 13. A connecting inclined surface 421 is formed on the end face of the connecting rod 42 facing the push rod 41. The distance of the connecting inclined surface 421 from the push rod 41 gradually increases from top to bottom. 21 can contact the side of push rod 41. Push rod 41 pushes connecting rod 42 to move through connecting inclined surface 421. Connecting rod 42 pushes rack 23 to move, so that rack 23 meshes with gear 22. Locking component 5 is installed on the inner wall of receiving cavity 13. Locking component 5 can lock connecting rod 42. During the downward movement of drive rod 33, rack 23 can continuously mesh with gear 22, so that plastic film is more firmly wrapped on fixed roller 21. Connecting spring 43 is fixedly connected to the inner wall of placement groove 16. Connecting spring 43 is fixedly connected to rack 23. At this time, connecting spring 43 is in a stretched state.

[0050] Referring to Figures 4 and 5, the locking component 5 includes a locking block 51, a locking spring 52, and a locking rod 53. The locking block 51 is fixedly connected to the inner wall of the receiving cavity 13, and a locking groove 511 is horizontally opened on the side wall of the locking block 51 facing the connecting rod 42. The locking spring 52 is fixedly connected to the inner wall of the locking groove 511 away from the connecting rod 42, and the locking spring 52 is in a compressed state. The locking rod 53 is horizontally placed in the locking groove 511, and the locking rod 53 is fixedly connected to the locking spring 52. The locking rod 53 can slide horizontally along the locking groove 511 and abut against the connecting rod 42. A positioning groove 422 is opened on the side wall of the connecting rod 42. During the movement of the connecting rod 42, when the locking rod 53 is opposite to the positioning groove 422, the locking spring 52 can pull the locking rod 53 to insert into the positioning groove 422, and the locking rod 53 can lock the connecting rod 42.

[0051] Referring to Figures 2 and 4, an unlocking component 6 is installed on the inner wall of the receiving cavity 13. The unlocking component 6 includes a first unlocking rod 61, a second unlocking rod 62, and a third unlocking rod 63. The first unlocking rod 61 is slidably installed on the inner wall of the receiving cavity 13 and is vertically arranged. A dovetail block is fixedly connected to the first unlocking rod 61. A dovetail groove is vertically opened on the inner wall of the receiving cavity 13, and the dovetail block is placed in the dovetail groove. A horizontally arranged first pull plate 611 is fixedly connected to the bottom of the first unlocking rod 61. During the downward movement of the driving rod 33, the driving rod 33 can abut against the first pull plate 611. Subsequently, the driving rod 33 drives the first pull plate 611 to move, and the first pull plate 611 drives the first unlocking rod 61 to move. A horizontally arranged second pull plate 612 is fixedly connected to the top of the first unlocking rod 61, and the first unlocking rod 61 drives the second pull plate 612 to move. The second unlocking rod 62 is rotatably installed on the inner wall of the receiving cavity 13. One end of rod 62 is located below and abuts against the second pull plate 612. The second pull plate 612 drives the second unlocking rod 62 to rotate. The third unlocking rod 63 is vertically inserted through the bottom of the locking block 51. The bottom of the third unlocking rod 63 abuts against the second unlocking rod 62. The second unlocking rod 62 drives the third unlocking rod 63 to move. The top of the third unlocking rod 63 extends into the locking groove 511. The bottom of the locking rod 53 has an unlocking groove 531. The third unlocking rod 63 can be inserted into the unlocking groove 531. The unlocking groove 531 has an unlocking ramp 532 formed on the inner wall near the locking spring 52. The distance between the unlocking ramp 532 and the locking spring 52 decreases from top to bottom. The third unlocking rod 63 pushes the locking rod 53 to move through the unlocking ramp 532, so that the locking rod 53 disengages from the positioning groove 422. The connecting spring 43 can drive the rack 23 to return to the initial position, making it convenient for the staff to continue using it next time.

[0052] Referring to Figure 4, a cutting groove 17 is horizontally provided on the side wall of the template 1 on the same side as the placement groove 16. The cutting groove 17 is located below the placement groove 16. A cutter 7 is horizontally placed in the cutting groove 17. A transmission component 8 is installed on the template 1. The first unlocking rod 61 can drive the cutter 7 to move to the outside of the template 1 through the transmission component 8, so that the cutter 7 can cut the plastic film, reducing the occurrence of manual cutting of the plastic film by the workers.

[0053] The transmission component 8 includes a first transmission rod 81, a transmission spring 82, and a second transmission rod 83. The first transmission rod 81 is horizontally inserted through the inner wall of the cutting groove 17 and is fixedly connected to the cutter 7. The first transmission rod 81 extends into the receiving cavity 13. A transmission inclined surface 811 is formed on the end face of the first transmission rod 81 away from the cutter 7, and the distance of the transmission inclined surface 811 from the cutter 7 gradually increases from top to bottom. The transmission spring 82 is fixedly connected to the inner wall of the cutting groove 17 and is fixedly connected to the cutter 7. The transmission spring 82 is in a stretched state. The second transmission rod 83 is fixedly connected to the side wall of the first unlocking rod 61 and is horizontally arranged. During the movement of the first unlocking rod 61, the first unlocking rod 61 drives the second transmission rod 83 to move. When the second transmission rod 83 contacts the transmission inclined surface 811, the second transmission rod 83 pushes the first transmission rod 81 to move, and the first transmission rod 81 can then drive the cutter 7 to move.

[0054] The implementation principle of the construction device and method for the multi-directional adjustable support-assisted cast-in-place box girder pad stone in this application embodiment is as follows: When it is necessary to cover the template 1 with film, the motor 31 is started first. The motor 31 drives the reciprocating screw 32 to rotate. The reciprocating screw 32 drives the drive rod 33 to move upward. The drive rod 33 drives the pull rod 12 and the push rod 41 to move upward. The pull rod 12 drives the fixed roller 21 to move upward. The fixed roller 21 drives the gear 22 to move upward. When the push rod 41 abuts against the connecting inclined surface 421, the push rod 41 pushes the connecting rod 42 to move. The connecting rod 42 pushes the rack 23 to move, so that the rack 23 meshes with the gear 22. At this time, the connecting spring 43 is in a stretched state. When the locking rod... When 53 is aligned with the positioning groove 422, the locking spring 52 pulls the locking rod 53 into the positioning groove 422, locking the connecting rod 42. The driving rod 33 reaches the top. Then the driving rod 33 moves downward, driving the gear 22 downward. The gear 22 rotates, driving the fixed roller 21 to rotate. The plastic film can be wrapped around the fixed roller 21. The driving rod 33 continues to move. When the gear 22 separates from the rack 23, the driving rod 33 drives the fixed roller 21 to continue to descend. The fixed roller 21 stops rotating and drives the plastic film to move, covering the template 1 with film, thus improving the problem of low film covering efficiency for workers.

[0055] When the drive rod 33 contacts the first pull plate 611, the drive rod 33 drives the first pull plate 611 to move, the first pull plate 611 drives the first unlocking rod 61 to move, the first unlocking rod 61 drives the second pull plate 612 to move, the second pull plate 612 drives the second unlocking rod 62 to rotate, the second unlocking rod 62 drives the third unlocking rod 63 to move, the third unlocking rod 63 pushes the locking rod 53 to move through the unlocking inclined surface 532, so that the locking rod 53 disengages from the positioning groove 422, and the connecting spring 43 drives the rack 23 to return to the initial position, making it convenient for the staff to continue using it next time; at the same time, the first unlocking rod 61 drives the second transmission rod 83 to move, the second transmission rod 83 drives the first transmission rod 81 to move through the transmission inclined surface 811, the first transmission rod 81 drives the cutter 7 to move, at this time the transmission spring 82 is stretched, the cutter 7 can cut the plastic film, reducing the occurrence of manual cutting of the plastic film by the staff.

[0056] The construction method for cast-in-place box girder pad stones assisted by multi-directional adjustable supports includes the following steps:

[0057] S1. First, the on-site surveyors need to accurately lay out the plane position and elevation of the support pad stone according to the design drawings, and use ink lines to mark the four sides of the pad stone. At the same time, the longitudinal and transverse center axes of the pier body are measured and laid out, and clear and accurate fixed marks are made on the pier body.

[0058] S2. Then, the reinforcing bars of the pad stone are derusted, and the spacing of the reinforcing bars and the thickness of the protective layer are adjusted to ensure that they meet the design and specification requirements.

[0059] S3. Install multiple templates 1 and fix the templates 1 in place;

[0060] S4. Start motor 31 to cover template 1 with film, which reduces the number of operation steps for workers and improves the problem of low film covering efficiency.

[0061] S5. Fabricate the support frame and install the spherical support;

[0062] S6. Pour the foundation stone concrete, and then vibrate and cure the concrete.

[0063] S7. Remove the scaffolding and formwork 1.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction device for cast-in-place box girder pad stone assisted by a multi-directional adjustable support, including a formwork (1), characterized in that: A unwinding roller (11) for winding plastic film is rotatably mounted on the template (1). A pull rod (12) is slidably mounted on the side wall of the template (1). The length of the pull rod (12) is the same as the length of the template (1). The pull rod (12) slides along the width direction of the template (1). A fixing component (2) is mounted on the pull rod (12). The fixing component (2) is connected to the end of the plastic film away from the unwinding roller (11). A driving component (3) for driving the pull rod (12) to move is mounted on the template (1). A sliding section that communicates with the receiving cavity (13) is vertically opened on the side wall of the template (1). The sliding groove (15) includes a driving component (3) comprising a motor (31) fixedly connected to the inner wall of the receiving cavity (13), a reciprocating screw (32) rotatably mounted on the inner wall of the receiving cavity (13), and a driving rod (33) sleeved on the reciprocating screw (32); the output shaft of the motor (31) is fixedly connected to the reciprocating screw (32), the reciprocating screw (32) is threadedly connected to the driving rod (33), the driving rod (33) extends through the sliding groove (15) to the outside of the template (1), and the driving rod (33) is fixedly connected to the pull rod (12); a placement groove (16) is provided on the side wall of the template (1). The fixing component (2) includes a fixing roller (21) sleeved on the pull rod (12) and rotatably connected to the pull rod (12), a gear (22) sleeved on the fixing roller (21) and fixedly connected to the fixing roller (21), and a rack (23) placed in the placement groove (16); the rack (23) can be moved to the outside of the placement groove (16), the rack (23) can mesh with the gear (22), a connecting component (4) is installed on the template (1), and the drive rod (33) can drive the rack (23) to move through the connecting component (4); the connecting component (4) includes a fixed connection to the drive rod (3) 3) A push rod (41) on the push rod, a connecting rod (42) passing through the inner wall of the placement groove (16) and a connecting spring (43) fixedly connected to the inner wall of the placement groove (16); the connecting rod (42) and the connecting spring (43) are both fixedly connected to the rack (23), the connecting rod (42) extends into the receiving cavity (13), the end face of the connecting rod (42) facing the push rod (41) is formed with a connecting inclined surface (421), the side of the push rod (41) can contact the connecting inclined surface (421); a locking component (5) for locking the connecting rod (42) is installed on the inner wall of the receiving cavity (13);The locking component (5) includes a locking block (51) fixedly connected to the inner wall of the receiving cavity (13). A locking groove (511) is formed on the side wall of the locking block (51) facing the connecting rod (42). A locking spring (52) is fixedly connected to the inner wall of the locking groove (511). A locking rod (53) is slidably placed in the locking groove (511). The locking rod (53) is fixedly connected to the locking spring (52). A positioning groove (422) for inserting the locking rod (53) is formed on the side wall of the connecting rod (42). An unlocking component (6) is installed on the inner wall of the receiving cavity (13). The driving rod (33) can drive the locking rod (53) to disengage from the positioning groove (422) through the unlocking component (6).

2. The construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone as described in claim 1, characterized in that: The template (1) has a cavity (13) formed inside, and the unwinding roller (11) is rotatably mounted on the inner wall of the cavity (13). A film feeding port (14) is horizontally opened on the side wall of the template (1) on the same side as the pull rod (12). The film feeding port (14) is connected to the cavity (13), and the plastic film can extend to the outside of the template (1) through the film feeding port (14).

3. The construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone according to claim 1, characterized in that: The unlocking component (6) includes a first unlocking rod (61) slidably mounted on the inner wall of the receiving cavity (13), a second unlocking rod (62) rotatably mounted on the inner wall of the receiving cavity (13), and a third unlocking rod (63) passing through the locking block (51); one end of the first unlocking rod (61) is fixedly connected to a first pull plate (611), which can abut against the drive rod (33); the end of the first unlocking rod (61) away from the first pull plate (611) is fixedly connected to a second pull plate (612), which... The plate (612) abuts against the second unlocking rod (62); the end of the second unlocking rod (62) away from the second pull plate (612) abuts against the third unlocking rod (63), the third unlocking rod (63) extends into the locking groove (511), the side wall of the locking rod (53) is provided with an unlocking groove (531) for the third unlocking rod (63) to be inserted, the inner wall of the unlocking groove (531) near the locking spring (52) is formed with an unlocking slope (532), the unlocking slope (532) can contact the side of the third unlocking rod (63).

4. The construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone as described in claim 3, characterized in that: A cutting groove (17) is provided on the side wall of the template (1), and a cutter (7) is placed in the cutting groove (17). The cutter (7) can be moved to the outside of the template (1). A transmission component (8) is installed on the template (1), and the first unlocking rod (61) can drive the cutter (7) to move through the transmission component (8).

5. The construction device for the multi-directional adjustable support-assisted cast-in-place box girder pad stone according to claim 4, characterized in that: The transmission component (8) includes a first transmission rod (81) passing through the inner wall of the cutting groove (17), a transmission spring (82) fixedly connected to the inner wall of the cutting groove (17), and a second transmission rod (83) fixedly connected to the first unlocking rod (61). The first transmission rod (81) and the transmission spring (82) are both fixedly connected to the cutter (7). The first transmission rod (81) extends into the receiving cavity (13). A transmission inclined surface (811) is formed on the end face of the first transmission rod (81) facing the second transmission rod (83). The transmission inclined surface (811) contacts the side of the second transmission rod (83).

6. A construction method for cast-in-place box girder pad stone assisted by a multi-directional adjustable support, using the construction device for cast-in-place box girder pad stone assisted by the multi-directional adjustable support as described in claim 1, characterized in that... Includes the following steps: On-site surveyors accurately laid out the plane position and elevation of the supporting pad stone according to the design drawings; rust removal treatment was carried out on the pad stone reinforcement, and the spacing of the reinforcement and the thickness of the protective layer were adjusted; multiple templates (1) were installed and the templates (1) were fixed; the motor (31) was started and the templates (1) were covered with film; a support was made and the spherical support was installed; the pad stone concrete was poured and the concrete was vibrated and cured; the support and templates (1) were removed.

Images