Concrete formwork construction device for stiff skeleton arch bridge

Abstract

The utility model relates to the technical field of stiff skeleton arch bridges, in particular to a stiff skeleton arch bridge concrete formwork construction device which comprises two fixing rods, one fixing rod is connected to the inner wall of the other fixing rod in a sliding mode, the top end of one fixing rod is hinged to a supporting rod, and the top end of the other fixing rod is hinged to a connecting rod. A mounting mechanism is arranged at the top end of the supporting rod; by arranging the mounting mechanism, the supporting rod and the first template at one ends of the two electric push rods can be spliced with the second template through matching of first clamping grooves and clamping blocks in the two sides, and then the supporting rod and the first template are fixed between the first template and the second template through matching of fixing bolts and the clamping blocks; the two reinforcing rods penetrate into the first formwork and the second formwork so that the strength of the formworks can be improved, the second clamping grooves in the two ends of the first formwork and the two ends of the second formwork can be used for splicing other formworks, adjustment can be conducted according to the size of the supporting position of the stiff skeleton arch bridge, and poured concrete can be stably supported.

Description

Technical Field

[0001] This utility model relates to the field of rigid frame arch bridge technology, and in particular to a concrete formwork construction device for rigid frame arch bridges. Background Technology

[0002] A rigid frame is mainly used in the construction of concrete arch bridges. Simply put, it refers to a reinforced concrete component (arch rib) that cannot bear its own weight during construction and needs to be supported by other components. When pouring concrete on a rigid frame arch bridge, construction equipment is required to support it.

[0003] A search of the Chinese patent "Anti-slip Structure for Outer Concrete Formwork of a Rigid Frame Arch Bridge" (publication number CN220035212U) reveals that this patent uses a positioning component on the bottom surface of the lower chord of the arch rib segment to push the formwork at the lowest position on the arch foot side, directly resisting the force that would cause the formwork to slide down along the arch bridge line. This improves the stability of the formwork installation without affecting the construction of the outer concrete on the arch. Furthermore, the positioning component is directly connected to the lower chord of the arch rib segment, ensuring stable positioning and allowing for precise placement according to the formwork's installation location, thus improving the accuracy of the formwork installation and ensuring the shape of the formed concrete. However, this device is not ideal in situations involving different sizes and angles, as the formwork is prone to loosening during concrete pouring. It also makes it inconvenient to quickly install and support the concrete formwork according to the arch bridge's installation location, reducing the device's effectiveness.

[0004] Therefore, a rigid frame arch bridge concrete formwork construction device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a rigid frame arch bridge concrete formwork construction device to solve the above problems, thereby improving the inconvenience of quickly installing and supporting the concrete formwork according to the installation position of the arch bridge.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a construction device for concrete formwork of a rigid frame arch bridge, comprising two fixed rods, one of which is slidably connected to the inner wall of the other fixed rod, and a support rod is hinged to the top of one of the fixed rods, the top of which is provided with an installation mechanism; wherein, the installation mechanism includes electric push rods hinged to both sides of the support rod, and a first template is hinged to one end of each of the electric push rods and the support rod, and an adjustment component is provided on the inner wall of the fixed rod.

[0007] Preferably, the installation mechanism further includes two second templates that are snapped between several first templates. Two first slots are provided on both sides of the first templates and the second templates. A locking block is snapped between the two first slots. Two fixing bolts are threaded to both sides of the bottom of the first templates and the second templates. One end of the fixing bolt is threaded to the locking block. The first templates and the second templates are spliced ​​together by the cooperation of the first slots and the locking block. The concrete templates can be installed and used according to construction requirements.

[0008] Preferably, two reinforcing rods are snapped onto both sides of the inner walls of the first template and the second template. One end of each reinforcing rod passes through several first templates and two second templates in sequence. The two reinforcing rods can reinforce the first template and the second template, thereby increasing the strength of the template.

[0009] Preferably, both ends of the first template and the second template are provided with second slots, which can be used to splice and install other templates.

[0010] Preferably, both sides of the support rod are hinged with connecting blocks, one end of the connecting block is rotatably connected to a threaded cylinder, the inner wall of the threaded cylinder is threaded with a threaded rod, one end of the threaded rod is hinged to one side of the electric push rod, the threaded rod is connected to the support rod through the connecting block, and one end of the threaded rod is connected to the electric push rod. When the threaded rod rotates through the connecting block and is threadedly connected to the threaded rod, one end of the threaded rod can drive the electric push rod to rotate to one side to open, thereby adjusting the splicing range of the first template and the second template.

[0011] Preferably, the adjustment assembly includes a limiting bolt rotatably connected to one of the first templates and one side of the fixing rod. One end of each of the two limiting bolts passes through one of the first templates and the fixing rod and is threaded to both ends of the support rod. A washer is fitted onto one end of each limiting bolt. Rotating the limiting bolt and cooperating with the washer can fix both ends of the support rod. The limiting bolt can also release the restriction on the support rod and adjust the support angle of the support rod.

[0012] Preferably, a lead screw is rotatably connected to the inner wall of the other fixed rod. One end of the lead screw is threaded to one of the fixed rods, and a worm gear is fixedly connected to the bottom end of the lead screw. A rotating rod is rotatably connected to one side of the other fixed rod. One end of the rotating rod passes through the other fixed rod and is fixedly connected to a worm. The worm meshes with the worm gear. By rotating the rod, the worm and worm gear engage, allowing the lead screw to move one of the fixed rods upward. One of the fixed rods moves the first and second templates on the support rod, adjusting the support height of the device.

[0013] The beneficial effects of this utility model are:

[0014] 1. By setting up an installation mechanism, when supporting the formwork of the rigid frame arch bridge, the first template at one end of the support rod and two electric push rods can be spliced ​​with the second template. The first template and the second template can be spliced ​​by the first slots and the locking blocks on both sides. The locking blocks are I-shaped and can fix the first template and the second template. Then, the fixing bolts are used to fix the first template and the second template between the first template and the second template. Two reinforcing rods penetrate into the first template and the second template to improve the strength of the template. The second slots at both ends of the first template and the second template can be used to splice other templates. The rigid frame arch bridge can be supported according to the size of the support position. The threaded cylinder and the threaded rod cooperate to move the threaded rod to one side to adjust the rotation angle of the electric push rod. The installation angle and number of the first template and the second template can be adjusted according to the size of the support position of the rigid frame arch bridge, which can provide stable support for the concrete.

[0015] 2. By setting up an adjustment component, when supporting the rigid frame arch bridge, the two ends of the support rod are connected to the limit bolts, which drive the shims to move to one side to clamp and fix the position of the support rod, preventing displacement during use. The rotation angle of the support rod can also be adjusted by the limit bolts. The shims are made of rubber, which has high friction and can also improve the service life of the limit bolts. When the rotating rod is rotated, the worm gear and worm wheel cooperate, and the lead screw drives the support rod at one end of one of the fixed rods to move upward, adjusting the support height of the formwork. The support height and support angle of the concrete formwork can be adjusted, improving the effectiveness of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;

[0018] Figure 3 This is a partial structural diagram of the installation mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of A in the middle.

[0021] In the diagram: 1. Fixed rod; 2. Support rod; 3. Installation mechanism; 301. Electric push rod; 302. First template; 303. Second template; 304. First slot; 305. Locking block; 306. Fixed bolt; 307. Reinforcing rod; 308. Second slot; 309. Connecting block; 310. Threaded cylinder; 311. Threaded rod; 312. Adjusting component; 3121. Limit bolt; 3122. Washer; 3123. Lead screw; 3124. Worm gear; 3125. Rotating rod; 3126. Worm gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figure 1-5 As shown, a rigid frame arch bridge concrete formwork construction device includes two fixed rods 1, one of which is slidably connected to the inner wall of the other fixed rod 1. A support rod 2 is hinged to the top of one of the fixed rods 1, and an installation mechanism 3 is provided at the top of the support rod 2. The installation mechanism 3 includes electric push rods 301 hinged to both sides of the support rod 2. A first template 302 is hinged to one end of both the electric push rod 301 and the support rod 2. An adjustment component 312 is provided on the inner wall of the fixed rod 1.

[0024] like Figure 2 and Figure 3As shown, the installation mechanism 3 also includes two second templates 303 that are snapped between several first templates 302. Two first slots 304 are provided on both sides of the first templates 302 and the second templates 303, and a locking block 305 is snapped between the two first slots 304. Two fixing bolts 306 are threaded to both sides of the bottom of the first templates 302 and the second templates 303, with one end of each fixing bolt threaded to the locking block 305. Two reinforcing rods 307 are snapped to both sides of the inner walls of the first templates 302 and the second templates 303, with one end of each reinforcing rod 307 passing through several first templates 302 and two second templates 303 in sequence. Both ends of the first templates 302 and the second templates 303 are open... A second slot 308 is provided. When supporting the rigid frame arch bridge, the first slots 304 on both sides of the first template 302 and the second template 303 are aligned. Then, the locking block 305 is inserted between the two first slots 304 to splice the first template 302 and the second template 303. The locking block 305 is reinforced by rotating the two fixing bolts 306. The support rod 2 and the two electric push rods 301 cooperate to provide stable support on both sides and the middle of the template formed by splicing the first template 302 and the second template 303. The two reinforcing rods 307 can improve the strength of the first template 302 and the second template 303 and can be adjusted according to the size of the support position of the rigid frame arch bridge to support the concrete.

[0025] like Figure 3 As shown, both sides of the support rod 2 are hinged with connecting blocks 309. One end of the connecting block 309 is rotatably connected to a threaded cylinder 310. The inner wall of the threaded cylinder 310 is threadedly connected to a threaded rod 311. One end of the threaded rod 311 is hinged to one side of the electric push rod 301. When supporting the concrete formwork, the threaded cylinder 310 rotates through the connecting block 309. The threaded connection between the threaded cylinder 310 and the threaded rod 311 allows the threaded rod 311 to drive the electric push rod 301 to move to one side. When the threaded cylinder 310 rotates, the threaded rod 311 will not rotate with the threaded cylinder 310 because it is hinged to the electric push rod 301. This allows for adjustment and control of the tilt angle and range of the spliced ​​concrete formwork, improving the effectiveness of the device.

[0026] like Figure 4 and Figure 5As shown, the adjusting assembly 312 includes limiting bolts 3121 rotatably connected to one of the first templates 302 and one side of the fixed rod 1. One end of each limiting bolt 3121 passes through one of the first templates 302 and the fixed rod 1 and is threaded to both ends of the support rod 2. A washer 3122 is fitted onto one end of each limiting bolt 3121. A lead screw 3123 is rotatably connected to the inner wall of the other fixed rod 1. One end of the lead screw 3123 is threaded to one of the fixed rods 1. A worm gear 3124 is fixedly connected to the bottom end of the lead screw 3123. A rotating rod 3125 is rotatably connected to one side of the other fixed rod 1. One end of the rotating rod 3125 passes through the other fixed rod 1 and is fixedly connected to a worm gear 3126. 126 engages with worm gear 3124. When supporting the rigid frame arch bridge, rotating the two limit bolts 3121 and threadedly connecting them to both ends of the support rod 2 causes the washer 3122 to move to one side and clamp it to one side of the first template 302 and one of the fixed rods 1. The support rod 2 is reinforced by force. Rotating the rotating rod 3125 causes the worm gear 3126 to engage with worm gear 3124, causing the lead screw 3123 to rotate. The lead screw 3123 is threadedly connected to one of the fixed rods 1, causing the support rod 2 at its top and the template to move upward. Worm gear 3124 and worm gear 3126 have a certain self-locking property, which can stably support the device and adjust the support height and support angle of the concrete template.

[0027] In use, the threaded cylinder 310 is manually rotated to connect with the threaded rod 311, causing the electric push rod 301 to rotate to one side and open to the desired position. The electric push rod 301 is then manually activated, causing one end to move one of the first templates 302 to one side. Several first templates 302 are aligned with the first slots 304 on both sides of the second template 303. The locking block 305 is then engaged between the two first slots 304. The fixing bolt 306 is manually rotated to connect with the locking block 305 to secure the first template 302 and the second template 303. Finally, two reinforcing rods 307 are inserted into the first template 302 and the second template 303. The inner wall of 3 is reinforced. A hex wrench is used in conjunction with two limiting bolts 3121 to open the threaded connection between the first template 302 and the support rod 2. One of the limiting bolts 3121 can be used to adjust the support angle of the first template 302, and the other limiting bolt 3121 can be used to adjust the angle of the support rod 2. Rotating the threaded connection between the limiting bolt 3121 and the support rod 2 causes the washer 3122 to move to one side to limit the support rod 2. Manually rotating the rotating rod 3125 causes the worm gear 3126 to mesh with the worm wheel 3124, which in turn causes the lead screw 3123 to be threadedly connected to one of the fixed rods 1, so that it drives the support rod 2 to move upward to adjust the height of the device.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A construction device for concrete formwork of a rigid frame arch bridge, characterized in that, include: Two fixed rods (1), one of the fixed rods (1) is slidably connected to the inner wall of the other fixed rod (1), and a support rod (2) is hinged to the top of one of the fixed rods (1), and an installation mechanism (3) is provided at the top of the support rod (2); The installation mechanism (3) includes an electric push rod (301) hinged to both sides of the support rod (2). The electric push rod (301) and the support rod (2) are both hinged to a first template (302). The inner wall of the fixing rod (1) is provided with an adjustment component (312).

2. The rigid frame arch bridge concrete formwork construction device according to claim 1, characterized in that: The installation mechanism (3) further includes two second templates (303) that are snapped between several first templates (302). Two first slots (304) are provided on both sides of the first templates (302) and the second templates (303). A locking block (305) is snapped between the two first slots (304). Two fixing bolts (306) are threaded to both sides of the bottom of the first templates (302) and the second templates (303). One end of the fixing bolt (306) is threaded to the locking block (305).

3. The rigid frame arch bridge concrete formwork construction device according to claim 2, characterized in that: Two reinforcing rods (307) are snapped onto both sides of the inner wall of the first template (302) and the second template (303), and one end of the two reinforcing rods (307) passes through several first templates (302) and two second templates (303) in sequence.

4. The concrete formwork construction device for a rigid frame arch bridge according to claim 2, characterized in that: The first template (302) and the second template (303) are provided with second slots (308) at both ends.

5. The construction device for concrete formwork of a rigid frame arch bridge according to claim 1, characterized in that: Both sides of the support rod (2) are hinged with connecting blocks (309). One end of the connecting block (309) is rotatably connected to a threaded cylinder (310). The inner wall of the threaded cylinder (310) is threaded with a threaded rod (311). One end of the threaded rod (311) is hinged to one side of the electric push rod (301).

6. The concrete formwork construction device for a rigid frame arch bridge according to claim 1, characterized in that: The adjustment assembly (312) includes a limiting bolt (3121) rotatably connected to one of the first templates (302) and one side of the fixing rod (1). One end of each of the two limiting bolts (3121) passes through one of the first templates (302) and the fixing rod (1) and is threaded to both ends of the support rod (2). A washer (3122) is fitted onto one end of each limiting bolt (3121).

7. The construction device for concrete formwork of a rigid frame arch bridge according to claim 1, characterized in that: A lead screw (3123) is rotatably connected to the inner wall of the other fixed rod (1). One end of the lead screw (3123) is threadedly connected to one of the fixed rods (1). A worm gear (3124) is fixedly connected to the bottom end of the lead screw (3123). A rotating rod (3125) is rotatably connected to one side of the other fixed rod (1). One end of the rotating rod (3125) passes through the other fixed rod (1) and is fixedly connected to a worm (3126). The worm (3126) meshes with the worm gear (3124).

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