A precast beam formwork apparatus

Abstract

The application discloses a precast beam formwork device and belongs to the technical field of building construction, which comprises a bottom formwork structure and two side formwork structures symmetrically arranged on the left and right sides of the bottom formwork structure. The side formwork structure comprises a plurality of formwork assemblies which are spliced together, each formwork assembly comprises a rack and a formwork installed on one side of the rack, a stop strip is arranged between the formworks of two adjacent formwork assemblies, the formwork is provided with a stop groove, and the stop strip is detachably installed in the stop groove. A gas bag is arranged on the side of the stop strip away from a concrete pouring surface, the lower end of the gas bag is connected with an inflation pipe, the end of the inflation pipe is provided with a valve, and the valve is connected with an inflation connector. The application solves the problem of inconvenient disassembly of the stop strip in the existing precast beam formwork.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a prefabricated beam template device. Background Art

[0002] During bridge construction, prefabricated T-beams are often used to speed up on-site construction and improve efficiency. After the T-beam reinforcement skeleton is tied, a transfer trolley is used to transport the T-beam reinforcement skeleton to the precast beam formwork. The precast beam formwork is then closed with the transfer trolley to form a rigid mold, and concrete is poured into the precast beam formwork to form the T-beam.

[0003] Traditional precast beam formwork uses double-sided stop strips or foam adhesive to stop grout at joints. However, each time the formwork is reassembled, the previous stop strips and foam adhesive must be removed and then replaced with new double-sided stop strips and foam adhesive. This method not only increases workers' labor intensity, but also prevents the stop strips from being reused.

[0004] The existing technology also uses a groove and a rubber stopper to stop the grouting. However, the stopper is naturally larger than the groove. When the stopper needs to be pressed into the groove or removed or replaced, the stopper presses against the inner wall of the groove, making the removal and installation operation somewhat inconvenient. In particular, after the formwork is removed, if concrete is stuck between the stopper and the groove, it is difficult to remove the stopper. Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0005] The invention provides a prefabricated beam template device, which is used to solve the problem that the grouting strips of the existing prefabricated beam template are inconvenient to disassemble and assemble.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A precast beam formwork device comprises a bottom formwork structure and two side formwork structures symmetrically arranged on the left and right sides of the bottom formwork structure, the side formwork structure comprises a plurality of formwork assemblies spliced ​​together, the formwork assembly comprises a frame and a formwork installed on one side of the frame, a slurry-stop strip is arranged between the formworks of two adjacent formwork assemblies, the formwork is provided with a slurry-stop groove, and the slurry-stop strip is detachably installed in the slurry-stop groove; an air bag is provided on the side of the slurry-stop strip away from the concrete pouring surface, the lower end of the air bag is connected to an inflation tube, the end of the inflation tube is provided with a valve, and the valve is connected to an inflation joint.

[0008] Furthermore, the frame includes vertical channel steel, section steel and multiple transverse channel steels; one side of the section steel is connected to the vertical channel steel through multiple transverse channel steels, and the opposite side is connected to the template; the transverse channel steel located at the bottom is provided with a supporting channel steel, and the lower parts of the supporting channel steel and the vertical channel steel are both screwed with threaded steel for lifting the frame.

[0009] Furthermore, the material of the slurry-stopping strip and the airbag is silicone or rubber.

[0010] Furthermore, the left and right sides of the top surface of the bottom mold structure are provided with card slots, and sealing strips are detachably installed in the card slots, and the sealing strips are tightly connected to the templates of the two side mold structures respectively.

[0011] Furthermore, a slurry-stopping groove is provided on the splicing sides of two adjacent templates, and a slurry-stopping strip is detachably provided between the two slurry-stopping grooves.

[0012] Furthermore, the prefabricated beam formwork device also includes an auxiliary device, which includes a box and a handle; an inflator, an oil injector, a battery and a controller are provided in the box, and a setting panel is provided on the outside of the box; an air outlet, an oil nozzle, an air jet switch and an oil injection switch are provided on the handle; the air outlet is connected to the inflator through an air pipe, the oil nozzle is connected to the oil injector through an oil pipe, and the oil injector is connected to the oil storage tank; the air jet switch, inflator, oil injection switch, oil injector, setting panel and battery are all connected to the controller.

[0013] Furthermore, the air outlet and the oil nozzle are respectively arranged vertically on the left and right sides of the handle, a grinding head is provided on the front side of the handle, and the grinding head is rotatably connected to the handle through a rotating shaft. A driving motor is provided in the handle, and the driving motor is connected to the rotating shaft. A grinding switch is provided on the outside of the handle, and the grinding switch and the driving motor are both connected to the controller.

[0014] Furthermore, an air pressure sensor is provided at the outlet of the inflator, which is connected to the controller. In the inflation mode, when the airbag pressure reaches the set value, the controller controls the inflator to stop automatically; the setting panel includes a display screen and a button module, and the display screen and the button module are both connected to the controller.

[0015] Furthermore, a storage box for storing the handle is provided on one side of the box body.

[0016] Furthermore, the box is installed on a mobile trolley.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0018] 1. The present invention provides an air bag on the side of the stopper strip away from the concrete pouring surface. During assembly and disassembly, the air bag is deflated, the thickness of the stopper strip is smaller than the width of the stopper groove, and a gap exists between the stopper strip and the stopper groove, facilitating assembly and disassembly of the stopper strip, thereby improving the efficiency of formwork removal and splicing. After two adjacent formworks are spliced, an appropriate amount of gas is inflated into the air bag, allowing the stopper strip and the stopper groove to be tightly connected, ensuring a sealed joint and, in turn, a grout-stopping effect.

[0019] 2. The present invention also provides an auxiliary device to facilitate inflation of the airbag. Furthermore, the auxiliary device has an oil spraying function. Before installing the stop bar in the stop groove, lubricating oil can be sprayed through the auxiliary device's oil nozzle onto the stop groove and / or the side of the stop bar facing the concrete casting surface. The lubricating oil forms an isolation surface on the inside of the stop groove and / or the surface of the stop bar, facilitating removal of the stop bar during demolding and reducing the risk of damage to the stop bar during removal.

[0020] 3. The auxiliary device proposed in this invention also has a grinding function. When concrete sticks to the grouting groove, the grinding head of the auxiliary device can be used to smooth the concrete bond before installing the grouting strip. In addition, the inflator not only inflates the airbag but also blows high-pressure air into the grouting groove to remove dust inside, further improving the sealing effect of the grouting strip. The auxiliary device achieves multiple functions in one machine, is suitable for precast beam formwork construction, and brings convenience to construction personnel.

[0021] 4. The auxiliary device proposed in the present invention integrates the air outlet, oil nozzle and grinding head on the handle, which is convenient for the operator to operate with one hand and select the corresponding function switch to start according to needs, which is very convenient.

[0022] 5. The present invention can effectively reduce the overall weight of the stop bar by combining the stop bar with the air bag. When a large number of stop bars are needed, the efficiency of carrying the stop bars can be effectively improved and the workload of the operators can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic structural diagram of a prefabricated beam formwork device provided in Example 1 of the present invention;

[0024] Figure 2 This is a schematic structural diagram of a template assembly provided in Example 1 of the present invention;

[0025] Figure 3 This is a schematic diagram of the coordination between the stop strip and the template provided in Example 1 of the present invention;

[0026] Figure 4 is a schematic structural diagram of an auxiliary device provided in Example 2 of the present invention;

[0027] The marks in the accompanying drawings are: 1-bottom mold structure, 2-sealing strip, 3-side mold structure, 4-frame, 5-vertical channel steel, 6-section steel, 7-horizontal channel steel, 8-threaded steel, 9-formwork, 10-stop slurry strip, 11-air bag, 12-concrete pouring surface, 13-stop slurry groove, 14-box, 15-setting panel, 16-storage box, 17-handle, 18-air outlet, 19-oil nozzle, 20-grinding head, 21-jet switch, 22-oil spray switch, 23-grinding switch, 24-mobile trolley. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1-3 As shown, a precast beam formwork device includes a bottom formwork structure 1 and two side formwork structures 3 symmetrically arranged on the left and right sides of the bottom formwork structure 1. The side formwork structure 3 includes a plurality of formwork assemblies spliced ​​together, and the formwork assembly includes a frame 4 and a formwork 9 installed on one side of the frame 4.

[0031] The frame 4 comprises vertical channel steel 5, section steel 6, and multiple transverse channel steels 7. One side of the section steel 6 is connected to the vertical channel steel 5 via multiple transverse channel steels 7, and the opposite side is connected to the formwork 9. The lowest transverse channel steel 7 is equipped with a support channel steel. Threaded steel bars 8, used to raise and lower the frame 4, are screwed onto the lower portions of the support channel steel and the vertical channel steels 5. Rotating the threaded steel bars 8 allows the entire formwork assembly to be raised, lowered, and leveled.

[0032] A stopper strip 10 is installed between the templates 9 of two adjacent template assemblies. Each template 9 has a stopper groove 13, into which the stopper strip 10 is removably mounted. Specifically, a stopper groove 13 is provided on the joining side of each adjacent template 9, with a removable stopper strip 10 located between the two stopper grooves 13. This arrangement improves the seal between the stopper strip 10 and the template 9, thereby providing a more effective stopper.

[0033] An airbag 11 is installed on the side of the stopper strip 10 facing away from the concrete pouring surface 12. The lower end of the airbag 11 is connected to an inflation tube, which is terminated by a valve connected to an inflation connector. The stopper strip 10 and the airbag 11 are made of silicone or rubber. In this embodiment, the stopper strip 10 and the airbag 11 are made of rubber. When the valve is open, the airbag 11 can be inflated; when the valve is closed, the airbag 11 can be deflated.

[0034] The present invention provides an air bag 11 on the side of the stop grouting strip 10 away from the concrete pouring surface 12. During assembly and disassembly, the air bag 11 is in a deflated state, the thickness of the stop grouting strip 10 is less than the width of the stop grouting groove 13, and a gap exists between the stop grouting strip 10 and the stop grouting groove 13, which facilitates assembly and disassembly of the stop grouting strip 10, thereby improving the efficiency of removing and splicing the formwork 9. After the splicing of two adjacent formworks 9 is completed, an appropriate amount of gas is filled into the air bag 11, so that the stop grouting strip 10 and the stop grouting groove 13 are tightly connected, ensuring the sealing effect of the splicing seam and thus ensuring the grouting effect.

[0035] The present invention can effectively reduce the overall weight of the stop bar 10 by combining the stop bar 10 with the air bag 11. When a large number of stop bars 10 are needed, the efficiency of carrying the stop bars 10 can be effectively improved and the workload of operators can be reduced.

[0036] In addition, there are card slots on both sides of the top surface of the bottom mold structure 1, and sealing strips 2 are detachably installed in the card slots. The sealing strips 2 are tightly connected to the templates 9 of the two side mold structures 3 respectively, thereby improving the sealing between the bottom mold structure 1 and the two side mold structures 3 and having a better slurry-stopping effect.

[0037] Example 2

[0038] like Figure 4 As shown, based on Example 1, the precast beam formwork device in this embodiment further includes an auxiliary device, comprising a housing 14 and a handle 17. Housing 14 houses an inflator, an oil sprayer, a battery, and a controller, while a setup panel 15 is located outside housing 14. Handle 17 is equipped with an air outlet 18, an oil nozzle 19, an air jet switch 21, and an oil spray switch 22. Air outlet 18 is connected to the inflator via an air pipe, while oil nozzle 19 is connected to the oil sprayer via an oil pipe, and the oil sprayer is connected to an oil storage tank. The air jet switch 21, inflator, oil spray switch 22, oil sprayer, setup panel 15, and battery are all connected to the controller. When air jet switch 21 is activated, the controller controls the inflator, generating a high-pressure airflow that is delivered to air outlet 18. When oil spray switch 22 is activated, the controller controls the oil sprayer, drawing lubricating oil from the oil storage tank and delivering it to oil nozzle 19 for atomized spray. The operating parameters of the inflator and fuel injector are set on the setting panel.

[0039] Specifically, an air outlet 18 and an oil nozzle 19 are vertically positioned on the left and right sides of the handle 17, respectively. A grinding head 20 is positioned on the front side of the handle 17 and is rotatably connected to the handle 17 via a rotating shaft. A drive motor is positioned within the handle 17 and is connected to the rotating shaft. A grinding switch 23 is positioned on the outside of the handle 17. Both the grinding switch 23 and the drive motor are connected to a controller. When the grinding switch 23 is activated, the controller controls the rotation of the drive motor, which in turn drives the grinding head 20 to perform the grinding operation. The rotation speed of the drive motor can be set using a settings panel.

[0040] The inflator's outlet is equipped with a pressure sensor, which is connected to a controller. In inflation mode, when the air pressure in the airbag 11 reaches a set value, the controller automatically stops the inflator. The setup panel 15 includes a display and a button module, both of which are connected to the controller. These display and button modules are used to set and display the operating parameters of the inflator, fuel injector, and drive motor.

[0041] In addition, a storage box 16 for storing the handle 17 is provided on one side of the box body 14, which is convenient for storing the handle 17. The box body 14 is installed on a mobile trolley 24 to facilitate the movement of the auxiliary device.

[0042] The auxiliary device provided by the present invention is provided with an inflator to facilitate the inflation of the airbag 11. In addition, the auxiliary device also has an oil spraying function. Before installing the stop grouting strip 10 in the stop grouting groove 13, lubricating oil can be sprayed onto the stop grouting groove 13 and / or the stop grouting strip 10 on the side facing the concrete casting surface 12 through the oil nozzle 19 of the auxiliary device. The lubricating oil forms an isolation surface on the inner side of the stop grouting groove 13 and / or the surface of the stop grouting strip 10, which facilitates the removal of the stop grouting strip 10 during demolding and reduces the damage rate of the stop grouting strip 10 during removal.

[0043] The auxiliary device proposed in the present invention also has a grinding function. When concrete adhesion occurs in the grouting groove 13, the grinding head 20 of the auxiliary device can be used to grind the concrete adhesion area smooth before installing the grouting strip 10. In addition, in addition to inflating the airbag 11, the inflator can also blow high-pressure air into the grouting groove 13 to remove dust in the groove, which can further improve the sealing effect of the grouting strip 10. The auxiliary device realizes multiple uses in one machine and is suitable for the construction of precast beam formwork 9, bringing convenience to construction personnel.

[0044] The auxiliary device proposed in the present invention integrates the air outlet 18, the oil nozzle 19, and the grinding head 20 on the handle 17, which is convenient for the operator to operate with one hand and to select and start the corresponding function switch as needed, thereby having good convenience.

[0045] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A precast beam formwork device, comprising a bottom formwork structure and two side formwork structures symmetrically arranged on the left and right sides of the bottom formwork structure, wherein the side formwork structure comprises a plurality of mutually spliced ​​formwork assemblies, wherein the formwork assembly comprises a frame and a formwork mounted on one side of the frame, and a slurry stopper is provided between the formworks of two adjacent formwork assemblies, characterized in that: The template is provided with a grout-stop groove, and the grout-stop strip is detachably mounted in the grout-stop groove; an air bag is provided on the side of the grout-stop strip away from the concrete pouring surface, the lower end of the air bag is connected to an inflation tube, the end of the inflation tube is provided with a valve, and the valve is connected to an inflation joint; Among them, the splicing sides of two adjacent templates are each provided with a slurry stop groove, and a detachable slurry stop strip is provided between the two slurry stop grooves; The invention also includes an auxiliary device, which includes a box and a handle; the box is provided with an inflator, a fuel injector, a battery and a controller, and the outside of the box is provided with a setting panel; the handle is provided with an air outlet, a fuel nozzle, an air jet switch and a fuel injection switch; the air outlet is connected to the inflator through an air pipe, the fuel nozzle is connected to the fuel injector through an oil pipe, and the fuel injector is connected to the fuel storage tank; the air jet switch, inflator, fuel injection switch, fuel injector, setting panel and battery are all connected to the controller; The air outlet and the oil nozzle are respectively arranged vertically on the left and right sides of the handle; a grinding head is arranged on the front side of the handle, and the grinding head is rotatably connected to the handle through a rotating shaft; a driving motor is arranged inside the handle, and the driving motor is connected to the rotating shaft; a grinding switch is arranged on the outside of the handle, and the grinding switch and the driving motor are both connected to the controller.

2. A precast beam formwork device according to claim 1, characterized in that: The frame includes vertical channel steel, section steel and multiple transverse channel steels; one side of the section steel is connected to the vertical channel steel through multiple transverse channel steels, and the opposite side is connected to the template; the transverse channel steel located at the bottom is provided with a supporting channel steel, and the lower parts of the supporting channel steel and the vertical channel steel are both screwed with threaded steel for lifting the frame.

3. The precast beam formwork device according to claim 1, characterized in that: The materials of the slurry-stopping strip and the airbag are silicone or rubber.

4. The precast beam formwork device according to claim 1, characterized in that: The left and right sides of the top surface of the bottom mold structure are both provided with card slots, and sealing strips are detachably installed in the card slots, and the sealing strips are tightly connected to the templates of the two side mold structures respectively.

5. The precast beam formwork device according to claim 1, characterized in that: The outlet of the inflator is provided with an air pressure sensor, which is connected to the controller. In the inflation mode, when the airbag pressure reaches the set value, the controller controls the inflator to stop automatically; the setting panel includes a display screen and a button module, and the display screen and the button module are both connected to the controller.

6. The precast beam formwork device according to claim 1, characterized in that: A storage box for storing the handle is provided on one side of the box body.

7. The precast beam formwork device according to claim 1, characterized in that: The box is installed on a mobile trolley.

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