A cast-in-place concrete guardrail construction device for bridges

Abstract

The present application relates to a cast-in-place concrete guardrail construction device for bridges, belonging to the field of bridge construction technology. It includes an inner mold, an outer mold and a frame. A first picking and placing mechanism and a second picking and placing mechanism are arranged on the frame, and a support rod is horizontally arranged on the frame; the first picking and placing mechanism includes a first electric gripper, a first moving component and a first placing rack. The first moving component is used to drive the first electric gripper to move along the support rod and to drive the first electric gripper to approach or move away from the inner mold. The first placing rack is arranged on the frame and is used to store the inner mold; the second picking and placing mechanism includes a second electric gripper, a second moving component and a second placing rack. The second moving component is arranged on the support rod. The second moving component is used to drive the second gripper to move along the support rod and to drive the second electric gripper to flip. The second placing rack is arranged on the frame and is used to store the outer mold. The present application can improve the problems of high labor intensity and high safety risk of construction workers.

Description

Technical Field

[0001] The present application relates to the field of bridge construction technology, and in particular to a bridge cast-in-situ concrete guardrail construction device. Background Art

[0002] Cast-in-place concrete guardrails for bridges refer to guardrails cast on bridges. Their main purpose is to prevent vehicles from going over the bridge. They have the function of preventing vehicles from breaking through, passing under, or climbing over the bridge, as well as beautifying the bridge structure.

[0003] In traditional bridge concrete cast-in-place guardrail construction, guardrail reinforcement is first tied to both sides of the bridge, formwork is then supported on both sides of the guardrail reinforcement, and finally concrete is poured into the formwork. The support and demolding operations on both sides of the guardrail require manual labor with a crane.

[0004] The formwork and demoulding on both sides of the guardrail are carried out by means of a crane in cooperation with manual work. The operation requires a large number of people. At the same time, the construction workers need to rely on a hanging basket to operate the formwork on the outer side of the guardrail. The labor intensity is high and the safety risks are high. Summary of the Invention

[0005] In order to improve the problems of high labor intensity and high safety risks for construction workers, the present application provides a bridge cast-in-place concrete guardrail construction device.

[0006] The present application provides a bridge cast-in-situ concrete guardrail construction device that adopts the following technical solution:

[0007] A bridge cast-in-situ concrete guardrail construction device includes an inner mold, an outer mold, and a frame arranged on the bridge deck, wherein the frame is provided with a first pick-up and placement mechanism for placing and removing the inner mold on the inner side of the guardrail, and a second pick-up and placement mechanism for placing and removing the outer mold on the outer side of the guardrail;

[0008] The tops of the inner mold and the outer mold are both provided with lifting ears; a support rod is horizontally provided on the frame, the support rod extends toward the guardrail, and rollers are provided at the bottom of the frame; the first picking and placing mechanism includes a first electric clamp, a first moving component and a first placement rack, the first moving component is provided on the support rod, the first moving component is used to drive the first electric clamp to move along the support rod and drive the first electric clamp to approach or move away from the inner mold, the first placement rack is provided on the frame and is located below the support rod, and the first placement rack is used to store the inner mold; the second picking and placing mechanism includes a second electric clamp, a second moving component and a second placement rack, the second moving component is provided on the support rod, the second moving component is used to drive the second clamp to move along the support rod and drive the second electric clamp to flip, the second placement rack is provided on the frame and is located above the support rod, and the second placement rack is used to store the outer mold.

[0009] By adopting the above technical solutions, when installing the inner mold and the outer mold on both sides of the guardrail, the first moving component drives the first electric gripper to move, and the first electric gripper is used to clamp the lifting lugs on the inner mold stored on the first placement rack, and then drives the inner mold to move to the inner side of the guardrail for installation; the second moving component drives the second electric gripper to move, the second electric gripper clamps and moves the outer mold stored on the second placement rack, and then the second moving component drives the second electric gripper to flip, and moves the outer mold to the outer side of the guardrail; when demolding the inner mold and the outer mold, reverse the above process to remove the inner mold and convey it to the first placement rack for storage, and remove the outer mold and convey it to the second placement rack for storage; thus, there is no need for construction workers to perform construction operations on the outer mold outside the bridge through a hanging basket, reducing the labor intensity of construction workers and the safety risks during the construction process; at the same time, the frame is driven to move on the bridge deck through rollers, facilitating continuous guardrail construction operations and improving construction efficiency.

[0010] Optionally, a plurality of through holes are oppositely arranged on the inner mold and the outer mold, a tie bolt is passed through the through holes between the inner mold and the outer mold, and a nut is fixed on the outer mold at the position of the through hole.

[0011] By adopting the above technical solutions, the inner mold and the outer mold are connected and fixed by tie bolts, and the nuts are fixedly installed on the outer mold. When installing the tie bolts, the tie bolts are inserted into the through holes and threadedly matched with the nuts on the outer mold. There is no need for construction workers to fix the tie bolts on the outer mold outside the guardrail through a hanging basket, reducing the safety risks during the construction process.

[0012] Optionally, the first moving component includes a first rodless electric cylinder and a hydraulic cylinder. The first rodless electric cylinder is arranged on the lower surface of the support rod, the hydraulic cylinder is arranged on the slide table of the first rodless electric cylinder, the piston rod of the hydraulic cylinder extends vertically downward, and the first electric gripper is arranged at the end of the piston rod of the hydraulic cylinder.

[0013] By adopting the above technical solutions, when the first rodless electric cylinder is started, the slide table of the first rodless electric cylinder moves along the cylinder body of the first rodless electric cylinder, thereby driving the first electric gripper to move along the length direction of the support rod. When the hydraulic cylinder is started, the piston rod of the hydraulic cylinder extends or retracts, thereby driving the first electric gripper to approach or move away from the support rod, so as to achieve the effect of facilitating the movement of the first electric gripper, and further facilitating the driving of the first electric gripper to clamp the inner mold and drive the inner mold to move.

[0014] Optionally, the first placement rack includes a plurality of first placement rods and a first limiting member. A plurality of first placement rods are horizontally arranged on the frame below the support rod, and the plurality of first placement rods are aligned with a plurality of through holes on the inner mold. The first limiting member is used to block and limit the inner mold passing through the plurality of first placement rods.

[0015] By adopting the above technical solution, multiple first placing rods are aligned with multiple through holes on the inner mold, and the inner mold is passed through the through holes and sleeved on the multiple first placing rods. Multiple inner molds can also be arranged side by side on the multiple first placing rods, facilitating the storage of the inner mold; the first limiting member blocks and limits the inner mold sleeved on the multiple first placing rods to prevent the inner mold from detaching from the first placing rods.

[0016] Optionally, the first limiting member includes an adjusting rod, a sleeve, and a contact plate. The adjusting rod is arranged on both sides of the multiple first placing rods on the frame. Multiple adjusting holes are provided on the adjusting rod. The sleeve is sleeved on the adjusting rod. A pin is inserted through the sleeve. The contact plate is rotatably arranged on the sleeve. A spring is arranged between the contact plate and the sleeve. An electromagnet is embedded on the side of the contact plate facing the adjusting rod.

[0017] By adopting the above technical solution, when the inner mold is placed on the multiple first placing rods, the first electric gripper drives the inner mold to move onto the first placing rods. The inner mold abuts against the contact plate. As the inner mold moves, the inner mold drives the contact plate to rotate towards the adjusting rod and compress the spring until the inner mold disengages from the spring. The contact plate rotates away from the adjusting rod under the action of the spring. At this time, when the inner mold tends to tilt and detach from the first placing rod, the contact plate can block the inner mold to prevent the inner mold from detaching from the first placing rod; when the number of inner molds on the first placing rods increases, adjust the position of the sleeve on the adjusting rod and fix the sleeve on the adjusting rod through the pin, so as to effectively block the inner mold when the number of inner molds on the first placing rods changes; when it is necessary to remove the inner mold from the multiple first placing rods, start the electromagnet. A suction force is generated between the electromagnet and the adjusting rod, and the adjusting rod rotates to be close to the adjusting rod. At this time, the inner mold on the first placing rod can be taken out.

[0018] Optionally, the second placing rack includes multiple horizontally arranged second placing rods and a second limiting member. The multiple second placing rods are arranged on the frame and above the support rods. The multiple second placing rods are aligned with multiple through holes on the outer mold. The second limiting member is arranged on both sides of the multiple second placing rods on the frame. The second limiting member is used to block and limit the outer mold sleeved on the multiple second placing rods.

[0019] By adopting the above technical solution, the second moving assembly drives the second electric gripper to clamp and flip the outer mold and move it to be sleeved on the multiple second placing rods. The second limiting member blocks and limits the multiple outer molds sleeved on the second placing rods, thus facilitating the storage of the outer mold.

[0020] Optionally, the second moving component includes a flipping rod, a second rodless electric cylinder, a horizontal moving component, and a flipping component. The second rodless electric cylinder is disposed on the upper surface of the support rod. The flipping rod is an L-shaped rod body. The second electric gripper is disposed at the end of the flipping rod. The flipping component is disposed on the slide table of the second rodless electric cylinder and is used to drive the flipping rod to rotate. The horizontal moving component is disposed on the flipping component. The horizontal moving component is connected to the flipping rod and is used to drive the second electric gripper to move to be directly opposite to the lifting lug on the outer mold.

[0021] By adopting the above technical solution, when demolding the outer mold, the second rodless electric cylinder drives the flipping rod to move along the length direction of the support rod. When the flipping rod is located at the end of the support rod, the flipping component drives the flipping rod to flip. The second electric gripper at the end of the flipping rod faces the outer mold. Then, the horizontal moving component drives the flipping rod to move until the second electric gripper is directly opposite to the lifting lug on the outer mold, so as to clamp the outer mold; then, the flipping component rotates the flipping rod by 180°, so that the outer mold is inverted and drives the outer mold to move onto multiple second placing rods; when removing the outer mold from the multiple second placing rods, operate the above process in reverse, move the outer mold to the outside of the guardrail for installation; thus, the effect of facilitating the installation and removal of the outer mold is achieved.

[0022] Optionally, the flipping component includes a fixing plate, a mounting rod, and a first drive motor. The fixing plate is disposed on the slide table of the second rodless electric cylinder. The mounting rod is horizontally rotatably disposed on the fixing plate. The mounting rod is perpendicular to the support rod. The first drive motor is disposed on the fixing plate, and the output shaft of the first drive motor is coaxially connected to the mounting rod. The horizontal moving component is disposed on the mounting rod.

[0023] By adopting the above technical solution, when the first drive motor is started, the output shaft of the first drive motor drives the mounting rod to rotate, and thus the effect of facilitating the rotation of the horizontal moving component and the flipping rod on the mounting rod is achieved.

[0024] Optionally, the horizontal moving component includes a slider, a lead screw, and a second drive motor. A chute is formed on the mounting rod. The lead screw is rotatably disposed on the mounting rod and is located in the chute. The slider is slidably disposed in the chute and the slider is threadedly sleeved on the lead screw. The flipping rod is connected to the slider. The second drive motor is disposed on the mounting rod and is located at one end of the chute. The output shaft of the second drive motor is coaxially connected to the lead screw.

[0025] By adopting the above technical solution, the second driving motor is started, and the output shaft of the second driving motor drives the lead screw to rotate. The lead screw drives the slider to move along the chute on the mounting rod, and further drives the turning rod electrically mounted on the slider to move, facilitating the turning rod to move to a position directly opposite the lifting lug on the outer mold by the second electric gripper, achieving the effect of facilitating the clamping of the outer mold by the second electric gripper.

[0026] Optionally, the second limiting member includes a connecting rod, a pressing rod, and a third driving motor. The connecting rod is arranged on the frame on both sides of multiple second placing rods. The pressing rod is an L-shaped rod body. The third driving motor is arranged on the connecting rod, and the output shaft of the third driving motor is connected to one end of the pressing rod.

[0027] By adopting the above technical solution, the output shaft of the third driving motor drives the pressing rod to rotate. The pressing rod is an L-shaped rod body, so that the end of the pressing rod can resist and limit the outer mold on multiple second placing rods within a large range, achieving the effect of facilitating the blocking and limiting of the outer mold penetrating through multiple second placing rods.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When installing the inner mold and the outer mold on both sides of the guardrail, the first moving component drives the first electric gripper to move, and uses the first electric gripper to clamp the lifting lug on the inner mold stored on the first placing rack, and then drives the inner mold to move to the inner side of the guardrail for installation; the second moving component drives the second electric gripper to move, the second electric gripper clamps and moves the outer mold stored on the second placing rack, and then the second moving component drives the second electric gripper to turn over, and moves the outer mold to the outer side of the guardrail; it is convenient to install the inner mold and the outer mold.

[0030] 2. When demolding the inner mold and the outer mold, reverse the above process to remove the inner mold and convey it to the first placing rack for storage, and remove the outer mold and convey it to the second placing rack for storage; thus, there is no need for construction workers to perform construction operations on the outer mold outside the bridge through a hanging basket, reducing the labor intensity of construction workers and the safety risks during the construction process.

[0031] 3. Rollers are installed at the bottom of the frame to drive the frame to move on the bridge deck. When the frame is moving forward, it can continuously operate through the inner mold and the outer mold stored on the frame, and can also continuously demold the inner mold and the outer mold and store the removed inner mold and outer mold on the frame, greatly improving the construction efficiency.

[0032] 4. The inner mold and the outer mold are fixedly connected by tie bolts, and nuts are fixedly installed on the outer mold. When installing the tie bolts, the tie bolts are inserted into the through holes and threadedly engaged with the nuts on the outer mold, eliminating the need for construction workers to fix and install the tie bolts on the outer mold of the guardrail outside the basket through a hanging basket, reducing the safety risks during the construction process;

[0033] 5. The inner mold and the outer mold can be installed synchronously through the first picking and placing mechanism and the second picking and placing mechanism, and can also be demolded synchronously, improving the construction efficiency. Moreover, the inner mold and the outer mold are always in a facing state during installation, eliminating the need for alignment adjustment and improving the installation efficiency. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of an embodiment of the present application.

[0035] Figure 2 is a schematic structural diagram for showing the outer mold in an embodiment of the present application.

[0036] Figure 3 is a schematic structural diagram for showing the first limiting member in an embodiment of the present application.

[0037] Figure 4 is a schematic structural diagram for showing the second moving component in an embodiment of the present application.

[0038] Description of the Reference Numerals:

[0039] 1. Inner mold; 11. Lifting lug; 12. Tie bolt; 2. Outer mold; 21. Nut; 3. Frame; 31. Support rod; 32. Roller; 4. First electric gripper; 51. First rodless electric cylinder; 52. Hydraulic cylinder; 61. First placing rod; 62. First limiting member; 621. Adjusting rod; 622. Sleeve; 623. Abutting plate; 624. Adjusting hole; 625. Plug pin; 626. Spring; 627. Electromagnet; 7. Second electric gripper; 81. Flipping rod; 82. Second rodless electric cylinder; 83. Horizontal moving component; 831. Slide block; 832. Lead screw; 833. Second driving motor; 84. Flipping component; 841. Fixed plate; 842. Mounting rod; 843. First driving motor; 91. Second placing rod; 92. Second limiting member; 921. Connecting rod; 922. Tightening rod; 923. Third driving motor. Detailed Embodiment

[0040] The following further describes the present application in detail Figures 1-4 with reference to the attached drawings.

[0041] An embodiment of the present application discloses a construction device for cast-in-place concrete guardrails of bridges. Refer to Figure 1, a cast-in-situ concrete guardrail construction device for bridges includes an inner mold 1 installed inside the guardrail, an outer mold 2 installed outside the guardrail, and a frame 3 installed on the bridge deck. A first picking and placing mechanism for installing and removing the inner mold 1 and a second picking and placing mechanism for installing and removing the outer mold 2 are installed on the frame 3. Two lifting lugs 11 convenient for clamping are fixedly installed on the top of each inner mold 1 and outer mold 2. The frame 3 includes a bottom plate body and a mounting frame vertically installed on the plate body. A plurality of rollers 32 are installed at the bottom of the frame 3, and the plurality of rollers 32 are driven to rotate by a motor. Two support rods 31 are horizontally installed on the mounting frame of the frame 3. The two support rods 31 are parallel to each other and located on the same horizontal plane, and both support rods 31 extend towards the guardrail.

[0042] The first picking and placing mechanism includes a first electric gripper 4, a first moving assembly, and a first placing rack. The first moving assembly is installed on the lower plate surfaces of the two support rods 31. The first electric gripper 4 is installed on the first moving assembly. The first moving assembly drives the first electric gripper 4 to move along the length direction of the support rod 31. At the same time, the first moving assembly is used to drive the first electric gripper 4 to approach or move away from the inner mold 1. The first placing rack is installed on the frame 3 and is located below the support rod 31. The first placing rack is used for storing the inner mold 1.

[0043] The second picking and placing mechanism includes a second electric gripper 7, a second moving assembly, and a second placing rack. The second moving assembly is installed on the upper surface of the support rod 31. The second electric gripper 7 is installed on the second moving assembly. The second moving assembly drives the second electric gripper 7 to move along the length direction of the support rod 31, and the second moving assembly can drive the second electric gripper 7 to flip. The second placing rack is installed on the frame 3 and is located above the support rod 31. The second placing rack is used for storing the outer mold 2.

[0044] When installing the inner mold 1 and the outer mold 2, the first moving assembly drives the first electric gripper 4 to pick up the inner mold 1 on the first placing rack, and drives the inner mold 1 to move inside the guardrail. The first moving assembly drives the inner mold 1 to move to the installation position. The second moving assembly drives the second electric gripper 7 to pick up the outer mold 2 on the second placing rack. When the outer mold 2 is moved to the end of the support rod 31, the second moving assembly drives the second electric gripper 7 to flip, and flips the outer mold 2 on the second electric gripper 7 to the outside of the guardrail for installation. When demolding the inner mold 1 and the outer mold 2, reverse the above process, remove the inner mold 1 and convey it to the first placing rack for storage, and remove the outer mold 2 and convey it to the second placing rack for storage.

[0045] Rollers 32 are installed at the bottom of the frame 3 to drive the frame 3 to move along the guardrail direction on the bridge deck. Through the internal formwork 1 and the external formwork 2 stored on the frame 3, continuous formwork installation operations can be carried out, and the demolding operations of the internal formwork 1 and the external formwork 2 can also be continuously carried out, and the removed internal formwork 1 and external formwork 2 are stored on the frame 3, greatly improving the construction efficiency.

[0046] Refer to Figure 1 and Figure 2 A plurality of through holes are provided on both the internal formwork 1 and the external formwork 2. A tension bolt 12 is passed through the opposing through holes on the internal formwork 1 and the external formwork 2, and the internal formwork 1 and the external formwork 2 are fixed by the tension bolt 12. A plurality of nuts 21 are fixedly connected to the side of the external formwork 2 facing away from the internal formwork 1, and the plurality of nuts 21 correspond to the plurality of through holes one by one.

[0047] When fixing the internal formwork 1 and the external formwork 2, the tension bolt 12 is inserted through the through hole on the internal formwork 1 from the side of the internal formwork 1, passed through the through hole on the external formwork 2, and the tension bolt 12 is screwed so that the tension bolt 12 is in threaded engagement with the nut 21. Then, a nut is threadedly sleeved on the tension bolt 12 on the side of the internal formwork 1 to achieve the fixation of the internal formwork 1 and the external formwork 2. The nut 21 is fixed on the external formwork 2. When fixing the internal formwork 1 and the external formwork 2, there is no need for construction workers to carry out installation operations on the outside of the bridge through a hanging basket, reducing the safety risks during the construction process.

[0048] Refer to Figure 1 The first moving component includes a first rodless electric cylinder 51 and a hydraulic cylinder 52. The first rodless electric cylinder 51 is installed on the lower plate surface of the support rod 31 along the length direction of the support rod 31. The first rodless electric cylinder 51 is installed on the lower surfaces of the two support rods 31. The hydraulic cylinder 52 is installed on the slide table of the first rodless electric cylinder 51. The piston rod of the hydraulic cylinder 52 extends vertically downward, and the first electric gripper 4 is fixedly installed at the end of the piston rod of the hydraulic cylinder 52.

[0049] Refer to Figure 1 The first placement rack includes a plurality of first placement rods 61 and a first limiting member 62. A plurality of first placement rods 61 are horizontally installed on the installation frame of the frame 3. The plurality of first placement rods 61 correspond to the plurality of through holes on the internal formwork 1 one by one, and the plurality of first placement rods 61 all extend towards the guardrail. The internal formwork 1 is passed through the plurality of first placement rods 61 through the through holes. The first limiting member 62 is installed on the frame 3, and the first limiting member 62 is used to block and limit the internal formwork 1 passed through the plurality of first placement rods 61 to prevent the internal formwork 1 from detaching from the plurality of first placement rods 61.

[0050] When installing the inner mold 1, the first rodless electric cylinder 51 drives the first electric clamp 4 to move along the support rod 31. The hydraulic cylinder 52 drives the first electric clamp 4 to approach the inner mold 1 on the multiple first placement rods 61. The first electric clamp 4 clamps the lifting lug 11 on the inner mold 1. The first rodless electric cylinder 51 then drives the inner mold 1 to move along the support rod 31 toward the guardrail. The hydraulic cylinder 52 and the first rodless electric cylinder 51 install the inner mold 1 in place. When demolding the inner mold 1, the hydraulic cylinder 52 and the first rodless electric cylinder 51 drive the first electric clamp 4 to clamp the lifting lug 11 on the inner mold 1 and drive the inner mold 1 to move to the multiple first placement rods 61 for storage.

[0051] Reference Figure 1 and Figure 3 The first limiting member 62 includes an adjustment rod 621, a sleeve 622, and an abutment plate 623. The adjustment rod 621 is an L-shaped rod, mounted on both sides of the frame 3. The gap between the two adjustment rods 621 is greater than the length of the inner mold 1. The adjustment rod 621 is vertically provided with a plurality of adjustment holes 624 along its length. The sleeve 622 is sleeved on the adjustment rod 621 and is provided with a latch 625. The sleeve 622 moves along the adjustment rod 621 and is fixed by the latch 625. The abutment plate 623 is rotatably mounted on the sleeve 622. A spring 626 is installed between the abutment plate 623 and the sleeve 622. One end of the spring 626 is fixedly connected to the abutment plate 623, and the other end is fixedly connected to the sleeve 622. When the spring 626 is in its natural position, the angle between the abutment plate 623 and the adjustment rod 621 is acute, and the gap between the ends of the two abutment plates 623 is less than the length of the inner mold 1. An electromagnet 627 is embedded in the side of the abutment plate 623 facing the adjustment rod 621, which is made of magnetic metal.

[0052] When the removed inner mold 1 is moved onto the plurality of first placement rods 61 for storage, the first rodless electric cylinder 51 drives the inner mold 1 away from the guardrail. During this movement, the inner mold 1 contacts the abutment plate 623, driving the abutment plate 623 to rotate toward the adjustment rod 621, at which time the spring 626 is compressed. After the inner mold 1 has passed the abutment plate 623, the abutment plate 623 rotates away from the adjustment rod 621 under the action of the spring 626. At this time, when the inner mold 1 is about to separate from the first placement rod 61, the inner mold 1 contacts the end of the abutment plate 623, which blocks the inner mold 1. When the inner mold 1 is removed from the plurality of first placement rods 61, the electromagnet 627 is activated, generating an attractive force between the electromagnet 627 and the adjustment rod 621, which drives the abutment plate 623 to rotate toward the adjustment rod 621, allowing the inner mold 1 to be removed smoothly.

[0053] Reference Figure 1, the second placement rack includes a plurality of second placement rods 91 and a second limiting member 92. The plurality of second placement rods 91 are horizontally and fixedly installed on the installation frame of the machine frame 3. The plurality of second placement rods 91 are located above the support rod 31 and all extend towards the guardrail. When the outer mold 2 is clamped on the second electric gripper 7 and flipped to stand upside down above the support rod 31 through the second moving assembly, the plurality of second placement rods 91 correspond one by one to the plurality of through holes on the outer mold 2. The second limiting member 92 is installed on the machine frame 3 and is used to block and limit the outer mold 2 passing through the plurality of second placement rods 91.

[0054] Refer to Figure 1 , the second limiting member 92 includes a connecting rod 921, a pressing rod 922 and a third driving motor 923. There are two second limiting assemblies installed on the machine frame 3, and the two second limiting members 92 are respectively located on both sides of the plurality of second placement rods 91. The connecting rod 921 is an L-shaped rod body. One end of the connecting rod 921 is fixedly connected to the installation frame of the machine frame 3, and the other end extends horizontally towards the guardrail. The distance between the two connecting rods 921 is greater than the length of the outer mold 2. The third driving motor 923 is fixedly installed at the end of the connecting rod 921, and the output shaft of the third driving motor 923 rotates vertically through the connecting rod 921. The pressing rod 922 is an L-shaped rod, and one end of the pressing rod 922 is fixedly connected to the output shaft of the third driving motor 923. A ball head is processed at the end of the pressing rod 922 away from the third driving motor 923.

[0055] The second electric gripper 7 clamps the outer mold 2 outside the guardrail, flips the outer mold 2 by 180° through the second moving assembly, and then drives the outer mold 2 to move through the second moving assembly, so that the outer mold 2 is inverted and passed through the plurality of second placement rods 91, which is convenient for storing the outer mold 2. When multiple outer molds 2 are passed through the plurality of second placement rods 91 and the machine frame 3 moves, there is a risk that the multiple outer molds 2 will break away from the plurality of second placement rods 91 due to vibration. At this time, the third driving motor 923 drives the pressing rod 922 to rotate until the end of the pressing rod 922 abuts against the outermost outer mold 2, so as to block and limit the outer mold 2; when the outer mold 2 needs to be removed, drive the pressing rod 922 to rotate until the end of the pressing rod 922 is in the same straight line as the connecting rod 921, and then remove the outer mold 2. The pressing rod 922 is L-shaped, and the pressing rod 922 can block and limit the outer mold 2 on the plurality of second placement rods 91 within a large range.

[0056] Refer to Figure 1 and Figure 4, the second moving component includes a flipping rod 81, a second rodless cylinder 82, a horizontal moving component 83 and a flipping component 84. The second rodless cylinder 82 is fixedly installed on the upper surface of the support rod 31 along the length direction of the support rod 31. The second rodless cylinder 82 is installed on both support rods 31, and the sliders of the two second rodless cylinders 82 face each other. The flipping component 84 is installed between the sliders of the two second rodless cylinders 82, and the horizontal moving component 83 is installed on the flipping component 84. The flipping rod 81 is an L-shaped rod body. One end of the flipping rod 81 is connected to the horizontal moving component 83, and the other end is fixedly connected to the second electric gripper 7. The horizontal moving component 83 is used to drive the flipping rod 81 to move between the sliders of the two second rodless cylinders 82 until the second electric gripper 7 moves to face the lifting lug 11 on the outer mold 2. The flipping component 84 is used to drive the flipping rod 81 to rotate.

[0057] Referring to Figure 4 , the flipping component 84 includes a fixing plate 841, a mounting rod 842 and a first driving motor 843. The fixing plate 841 is installed on the sliders of the two second rodless cylinders 82. The two fixing plates 841 face each other. The mounting rod 842 is rotatably installed between the two fixing plates 841. The length direction of the mounting rod 842 is perpendicular to the length direction of the support rod 31. The first driving motor 843 is installed on one of the fixing plates 841. The output shaft of the first driving motor 843 passes through the fixing plate 841 and is fixedly connected to the mounting rod 842 coaxially. The horizontal moving component 83 is installed on the mounting rod 842.

[0058] Referring to Figure 4 , the horizontal moving component 83 includes a slider 831, a lead screw 832 and a second driving motor 833. A chute is formed in the mounting rod 842 along the length direction of the mounting rod 842. The lead screw 832 is rotatably installed in the mounting rod 842 and is located in the chute. The lead screw 832 is a bidirectional lead screw 832. Two sliders 831 are slidably installed in the chute, and the two sliders 831 are respectively thread sleeved on both ends of the lead screw 832. There are two flipping rods 81, and the two flipping rods 81 are respectively fixedly connected to the two sliders 831. The second driving motor 833 is installed on the mounting rod 842 and is located at one end of the chute. The output shaft of the second driving motor 833 is fixedly connected to the lead screw 832 coaxially.

[0059] When demolding the outer mold 2 outside the guardrail, the second drive motor 833 is activated, driving the lead screw 832 to rotate, thereby driving the two tilting rods 81 toward or away from each other. When the second electric clamps 7 at the ends of the two tilting rods 81 are aligned with the two lifting ears 11 on the outer mold 2, the second electric clamps 7 clamp the outer mold 2. The first drive motor 843 is activated, driving the installation rod 842 to rotate, thereby driving the tilting rod 81 to rotate. The tilting rod 81 rotates 180 degrees, and the outer mold 2 rotates until it is inverted above the support rod 31. The second rodless electric cylinder 82 drives the outer mold 2 to move onto the multiple second placement rods 91, completing the demolding of the outer mold 2. When installing the outer mold 2, the above process is reversed, and the outer mold 2 is removed from the multiple second placement rods 91 and transported to the ends of the support rods 31. The outer mold 2 is then flipped to the outside of the guardrail for installation.

[0060] The implementation principle of the cast-in-situ concrete guardrail construction device for a bridge in the embodiment of the present application is as follows: when installing the inner mold 1 and the outer mold 2, multiple inner molds 1 are inserted on multiple first placement rods 61, and multiple outer molds 2 are inserted on multiple second placement rods 91. The hydraulic cylinder 52 drives the first electric clamp 4 to approach the lifting ear 11 on the inner mold 1, and the first electric clamp 4 clamps the inner mold 1. The first rodless electric cylinder 51 drives the first electric clamp 4 to move to the guardrail to place the inner mold 1 in place; the second drive motor 833 drives the two flip rods 81 to move closer to or farther away from each other. The outer mold 2 is separated from the outer mold 2, so that the second electric clamping claw 7 on the flipping rod 81 is aligned with the lifting ear 11 on the outer mold 2, the second electric clamping claw 7 clamps the outer mold 2, the second rodless electric cylinder 82 drives the outer mold 2 to move toward the guardrail, and the first drive motor 843 drives the outer mold 2 to flip to the outside of the guardrail; the tension bolt 12 is inserted into the through hole of the inner mold 1 and exits from the through hole of the outer mold 2, and the tension bolt 12 is passed through the nut 21 on the outer mold 2, and then a nut is put on the end of the tension bolt 12 located on the inner mold 1 to complete the installation of the inner mold 1 and the outer mold 2;

[0061] When demolding the inner mold 1 and the outer mold 2, remove the tension bolts 12 and reverse the above process. First, remove the outer mold 2 and turn it 180°, and then transport it to multiple second placement rods 91 for storage; remove the inner mold 1 and move it to multiple first placement rods 61 for storage.

[0062] Finally, it should be noted that in the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0063] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A cast-in-place concrete guardrail construction device for bridges, characterized in that: It includes an inner mold (1), an outer mold (2), and a frame (3) arranged on the bridge deck. A first picking and placing mechanism for placing and removing the inner mold (1) inside the guardrail and a second picking and placing mechanism for placing and removing the outer mold (2) outside the guardrail are arranged on the frame (3). Lifting lugs (11) are arranged on the tops of both the inner mold (1) and the outer mold (2). A support rod (31) is horizontally arranged on the frame (3), the support rod (31) extends towards the guardrail, and rollers (32) are arranged at the bottom of the frame (3). The first picking and placing mechanism includes a first electric gripper (4), a first moving component, and a first placement rack. The first moving component is arranged on the support rod (31), and the first moving component is used to drive the first electric gripper (4) to move along the support rod (31) and to drive the first electric gripper (4) to approach or move away from the inner mold (1). The first placement rack is arranged on the frame (3) and is located below the support rod (31), and the first placement rack is used to store the inner mold (1). The second picking and placing mechanism includes a second electric gripper (7), a second moving component, and a second placement rack. The second moving component is arranged on the support rod (31), and the second moving component is used to drive the second gripper to move along the support rod (31) and to drive the second electric gripper (7) to flip. The second placement rack is arranged on the frame (3) and is located above the support rod (31), and the second placement rack is used to store the outer mold (2). A plurality of through holes are oppositely arranged on the inner mold (1) and the outer mold (2), and a tension bolt (12) is passed through the through holes between the inner mold (1) and the outer mold (2), and a nut (21) is fixed on the outer mold (2) at the position of the through hole. The first placement rack includes a plurality of first placement rods (61) and a first limiting member (62). A plurality of first placement rods (61) are horizontally arranged on the frame (3) and are located below the support rod (31), and the plurality of first placement rods (61) are aligned with the plurality of through holes on the inner mold (1). The first limiting member (62) is used to block and limit the inner mold (1) passing through the plurality of first placement rods (61). The second placement rack includes a plurality of horizontally arranged second placement rods (91) and a second limiting member (92). The plurality of second placement rods (91) are arranged on the frame (3) and are located above the support rod (31), and the plurality of second placement rods (91) are aligned with the plurality of through holes on the outer mold (2). The second limiting member (92) is arranged on both sides of the plurality of second placement rods (91) on the frame (3), and the second limiting member (92) is used to block and limit the outer mold (2) passing through the plurality of second placement rods (91).

2. The construction device for cast-in-place concrete guardrail of a bridge according to claim 1, characterized in that: The first moving component includes a first rodless electric cylinder (51) and a hydraulic cylinder (52). The first rodless electric cylinder (51) is arranged on the lower surface of the support rod (31). The hydraulic cylinder (52) is arranged on the slide table of the first rodless electric cylinder (51). The piston rod of the hydraulic cylinder (52) extends vertically downward. The first electric gripper (4) is arranged at the end of the piston rod of the hydraulic cylinder (52).

3. The construction device for cast-in-place concrete guardrail of a bridge according to claim 1, wherein: The first limiting member (62) includes an adjusting rod (621), a sleeve (622) and a contact plate (623). The adjusting rod (621) is arranged on both sides of multiple first placing rods (61) on the frame (3). Multiple adjusting holes (624) are formed in the adjusting rod (621). The sleeve (622) is sleeved on the adjusting rod (621). A pin (625) is inserted through the sleeve (622). The contact plate (623) is rotatably arranged on the sleeve (622). A spring (626) is arranged between the contact plate (623) and the sleeve (622). An electromagnet (627) is embedded on the side of the contact plate (623) facing the adjusting rod (621).

4. The construction device for cast-in-place concrete guardrail of a bridge according to claim 1, wherein: The second moving component includes a turning rod (81), a second rodless electric cylinder (82), a horizontal moving component (83) and a turning component (84). The second rodless electric cylinder (82) is arranged on the upper surface of the support rod (31). The turning rod (81) is an L-shaped rod body. The second electric gripper (7) is arranged at the end of the turning rod (81). The turning component (84) is arranged on the slide table of the second rodless electric cylinder (82) and is used to drive the turning rod (81) to rotate. The horizontal moving component ( 5. The construction device for cast-in-place concrete guardrail of a bridge according to claim 4, characterized in that: ​ 6. The construction device for cast-in-place concrete bridge guardrail according to claim 5, characterized in that: The horizontal movement component (83) includes a slider (831), a lead screw (832), and a second drive motor (833). A chute is formed on the mounting rod (842). The lead screw (832) is rotatably arranged on the mounting rod (842) and is located within the chute. The slider (831) is slidably arranged within the chute, and the slider (831) is threadedly sleeved on the lead screw (832). The flipping rod (81) is connected to the slider (831). The second drive motor (833) is arranged on the mounting rod (842) and is located at one end of the chute. The output shaft of the second drive motor (833) is coaxially connected to the lead screw (832).

7. The construction device for cast-in-situ concrete guardrail of a bridge according to claim 1, characterized in that: The second limiting member (92) includes a connecting rod (921), a pressing rod (922), and a third drive motor (923). The connecting rod (921) is arranged on the frame (3) and is provided on both sides of multiple second placing rods (91). The pressing rod (922) is an L-shaped rod body. The third drive motor (923) is arranged on the connecting rod (921), and the output shaft of the third drive motor (923) is connected to one end of the pressing rod (922).

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