A reinforcing steel positioning frame for pavement expansion joint construction

Abstract

This utility model provides a rebar positioning frame for road expansion joint construction, including an elastic crossbeam, a support frame, a vibration assembly, and a controller. The elastic crossbeam includes a first crossbeam and a second crossbeam spaced at the same height, with handles at both ends of the first and second crossbeams. The support frame includes multiple supports spaced along the length of the elastic crossbeam, with a downward-facing slot at the bottom to accommodate the rebar. The vibration assembly includes a moving platform and a vibrator. The moving platform is centrally located between the first and second support beams, and a moving mechanism is provided between the moving platform and the elastic crossbeam. The vibrator is mounted on the moving platform. The controller is electrically connected to the moving mechanism and the vibrator. This design enables the dowel bars to be arrayed in a uniformly spaced pattern on the cement concrete road surface, pressing multiple dowel bars into the cement concrete, thus improving the positional accuracy and pressing efficiency of the dowel bars.

Description

Technical Field

[0001] This utility model relates to the field of road construction engineering technology, and in particular provides a steel bar positioning frame for road expansion joint construction. Background Technology

[0002] There are clear regulations governing the installation of tie bars and dowel bars in cement concrete pavements. Tie bars are primarily used longitudinally, while dowel bars are used transversely for contraction and expansion joints. Specifically, when pouring the left and right halves of the concrete pavement, longitudinal tie bars are installed in the middle, taking into account the panel thickness, width, and length. For example, for a 3-meter-wide slab with a surface layer thickness of 200 to 250 millimeters, the tie bars should be made of threaded steel bars with a diameter of 14 millimeters, a length of 700 millimeters, and a spacing of 900 millimeters, and the distance from the outermost transverse joint should not be less than 10 millimeters.

[0003] Currently, there is no specialized tool for arranging dowel bars side-by-side on cement concrete pavements in an array to form an evenly spaced arrangement and for pressing multiple dowel bars into the cement concrete. Instead, construction workers often use a measuring tape to position the dowel bars on the concrete surface and then use a steel fork to press them into the concrete individually. This method cannot guarantee the uniformity of the dowel bars' position on the pavement, and the pressing speed is slow and inefficient. Summary of the Invention

[0004] Based on this, the present invention provides a rebar positioning frame for road expansion joint construction, so as to realize the array arrangement of row-arranged dowel bars on cement concrete road surface, forming an evenly spaced arrangement, and pressing multiple dowel bars into cement concrete, thereby improving the positional accuracy and pressing efficiency of the dowel bars.

[0005] To achieve the above objectives, this utility model provides a rebar positioning frame for road expansion joint construction, comprising an elastic crossbeam, a support frame, a vibration assembly, and a controller. The elastic crossbeam includes a first crossbeam and a second crossbeam of equal length, spaced at intervals within the same height, with handles at both ends of the first and second crossbeams. The support frame comprises multiple supports spaced apart along the length of the elastic crossbeams, with a downward-facing opening at the bottom to accommodate the rebar to be pressed in. The vibration assembly includes a moving platform and a vibrator. The moving platform is centrally positioned between the first and second crossbeams, and a moving mechanism is provided between the moving platform and the elastic crossbeams. The vibrator is mounted on the moving platform. The controller is electrically connected to the moving mechanism and the vibrator.

[0006] The technical advantages of the provided steel bar positioning frame for road expansion joint construction are as follows:

[0007] After the concrete is poured but before it sets, two construction workers move the provided positioning frame to the concrete pavement, isolating it from the pavement. They then place reinforcing bars on the pavement, ensuring each bar is directly below its respective locking point. The positioning frame is then lowered, allowing the reinforcing bars to enter the locking points. A vibrator and a travel motor are then activated, vibrating the elastic beam at various points to transmit the vibration force to the locking points, driving the reinforcing bars into the concrete below the pavement. This allows for the arraying of dowel bars on the concrete pavement, forming an evenly spaced arrangement, and pressing multiple dowel bars into the concrete, improving the positional accuracy and pressing efficiency of the dowel bars.

[0008] Furthermore, the moving mechanism includes a set of traveling wheels disposed at the bottom of the moving platform. The set of traveling wheels includes clamping wheels that clamp and support the sides of the first support beam / second support beam. The moving platform is equipped with a traveling motor, which is drivenly connected to at least one of the clamping wheels. This enables the reciprocating motion of the moving platform, generating vibration force on each clamp.

[0009] Furthermore, slide rails are respectively provided on the horizontal outer sides of the first crossbeam / second crossbeam, and the rotating shafts of the clamping wheels are arranged vertically and respectively located on both sides of the moving platform, with each clamping wheel symmetrically pressing against the outer side of the slide rail. This enables flexible reciprocating motion of the moving platform.

[0010] Furthermore, the support frame includes longitudinally arranged legs extending downwards at both ends. The latch is located at the bottom of the legs, and the bottom of the latch has a semi-circular arc structure. The inner diameter of the semi-circular arc is adapted to the outer diameter of the reinforcing bar to be pressed in, thereby achieving accurate positioning of the reinforcing bar.

[0011] Furthermore, the support frame is a U-shaped structure with an opening facing downwards, and the latches are respectively arranged at both ends of the U-shaped structure. The latches are semi-circular structures with openings facing downwards, and the inner diameter of the latches is adapted to the outer diameter of the reinforcing bar that needs to be pressed down. Aluminum alloy castings can be used to reduce weight.

[0012] Furthermore, flexible pads are provided at the handles at both ends of the first crossbeam / second crossbeam, and the controller includes a first switch electrically connected to the travel motor and a second switch connected to the vibrator.

[0013] Furthermore, the first and second crossbeams are straight steel rods, and the support frame is a U-shaped bent steel rod with the opening facing downwards. The bent steel rod is welded or bound to the bottom of the straight steel rod, and the middle part of the bent steel rod is lower than the height of the first and second crossbeams.

[0014] Furthermore, the vibrator is an electric vibrator, and the power supply is connected to the electric vibrator via a power switch. The controller is located at the support handle and is connected to the vibrator via a flexible wire moving mechanism. The power supply is connected to the controller.

[0015] Furthermore, the vibrator is a pneumatic vibrator, and the air pump is connected to the pneumatic vibrator through a switching valve. The switching valve is located at the support handle, and one end of the switching valve is connected to the air pump, and the other end is connected to the pneumatic vibrator through a flexible air tube. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of this application, do not constitute an undue limitation of the present invention.

[0017] Figure 1 This is a three-dimensional structural diagram of a steel bar positioning frame for road expansion joint construction.

[0018] Figure 2 The provided diagram shows the front view of a three-dimensional structural schematic of a steel reinforcement positioning frame for road expansion joint construction.

[0019] Figure 3 This is a structural schematic diagram of the provided support frame.

[0020] Figure 4 This is a schematic diagram of the provided mobile station.

[0021] In the picture,

[0022] 11-First crossbeam, 12-Second crossbeam;

[0023] 21-Support frame, 22-Barrel;

[0024] 31-Moving table, 32-Vibrator, 33-Pressure roller, 34-Travel motor. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The description of exemplary embodiments is merely illustrative and is in no way intended to limit this disclosure or its application or use. This disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully express the scope of this disclosure to those skilled in the art.

[0026] like Figures 1 to 4As shown, this utility model provides a rebar positioning frame for road expansion joint construction, including an elastic crossbeam, a support frame, a vibration assembly, and a controller. The elastic crossbeam includes a first crossbeam 11 and a second crossbeam 12 of equal length and spaced at the same height, with support handles at both ends of the first crossbeam 11 and the second crossbeam 12; the support frame 21 includes multiple supports spaced along the length of the elastic crossbeam, and the bottom of the support frame 21 has a downward-facing slot 22 to accommodate the rebar to be pressed in; the vibration assembly includes a moving platform 31 and a vibrator 32, the moving platform 31 being centrally located between the first support beam and the second support beam, a moving mechanism being provided between the moving platform 31 and the elastic crossbeam, and the vibrator 32 being mounted on the moving platform 31; the controller is electrically connected to the moving mechanism and the vibrator 32.

[0027] Work process: After the concrete is poured but before it sets, two construction workers move the provided positioning frame to the concrete road surface and isolate it from the road surface. Then, they place steel bars on the road surface so that each steel bar is directly below each clamp 22. Then, they lower the positioning frame so that each steel bar enters the clamp 22, turn on the vibrator 32 and the travel motor 34 to vibrate the elastic beam at various points, transmit the vibration force to the clamps, and drive each steel bar into the concrete below the road surface.

[0028] The first crossbeam 11 and the second crossbeam 12 are straight steel rods, and the support frame 21 is a U-shaped bent steel rod with the opening facing downward. The bent steel rod is welded or bound to the bottom of the straight steel rod, and the middle part of the bent steel rod is lower than the height of the first crossbeam 11 and the second crossbeam 12.

[0029] The moving mechanism includes a set of traveling wheels disposed at the bottom of the moving platform 31. The set of traveling wheels includes clamping wheels 33 that clamp and support the sides of the first support beam / second support beam. The moving platform 31 is equipped with a traveling motor 34, which is driven by at least one of the clamping wheels 33. Furthermore, slide rails are respectively provided on the horizontal outer sides of the first crossbeam 11 / second crossbeam 12. The rotation shafts of the clamping wheels 33 are arranged vertically and respectively disposed on both sides of the moving platform 31, with each clamping wheel 33 symmetrically clamping against the outer side of the slide rails. The traveling motor 34 can be adjusted to rotate in both directions to realize the reciprocating motion of the moving platform 31.

[0030] The support frame 21 includes longitudinally arranged legs extending downwards at both ends. A latch 22 is located at the bottom of the legs, and the bottom of the latch 22 has a semi-circular arc structure. The inner diameter of the semi-circular arc is adapted to the outer diameter of the reinforcing bar to be pressed in. Preferably, the support frame 21 is a U-shaped structure with an opening facing downwards. The latches 22 are respectively arranged at both ends of the U-shaped structure, and the latches 22 are semi-circular structures with an opening facing downwards. The inner diameter of the latches 22 is adapted to the outer diameter of the reinforcing bar to be pressed down.

[0031] In one embodiment, flexible padding layers are respectively provided at the handles at both ends of the first crossbeam 11 / second crossbeam 12. The controller includes a first switch electrically connected to the travel motor 34 and a second switch connected to the vibrator 32. The vibrator 32 is an electric vibrator 32, and the power supply is controlled by the electric vibrator 32 through the power switch. The controller is located at the support handle and is connected to the vibrator 32 via a flexible wire moving mechanism and electrical signals. The power supply is connected to the controller.

[0032] In another embodiment, the vibrator 32 is a pneumatic vibrator 32. An air pump is connected to the pneumatic vibrator 32 via a switching valve located at the support handle. One end of the switching valve is connected to the air pump, and the other end is connected to the pneumatic vibrator 32 via a flexible air tube. During implementation, the air pump is placed separately from the provided device on a hardened surface and connected to the switching valve via the flexible air tube. Only the provided frame needs to be moved, and the air pump needs to be moved during the rebar pressing process.

[0033] The provided positioning tool enables the arraying of dowel bars on cement concrete pavement, forming an evenly spaced arrangement, and presses multiple dowel bars into the cement concrete, improving the positional accuracy and pressing efficiency of the dowel bars.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A steel reinforcement positioning frame for road expansion joint construction, characterized in that, include: The elastic crossbeam includes a first crossbeam (11) and a second crossbeam (12) of equal length and spaced at the same height, with support handles provided at both ends of the first crossbeam (11) and the second crossbeam (12); The support frame (21) includes multiple supports spaced apart along the length of the elastic crossbeam. The bottom of the support frame (21) is provided with a downward-facing slot (22) to accommodate the reinforcing bars that need to be pressed in. The vibration assembly includes a movable platform (31) and a vibrator (32). The movable platform (31) is centrally located between the first crossbeam (11) and the second crossbeam (12). A moving mechanism is provided between the movable platform (31) and the elastic crossbeam. The vibrator (32) is mounted on the movable platform (31). The controller is electrically connected to the moving mechanism and the vibrator (32).

2. The rebar positioning frame for road expansion joint construction according to claim 1, characterized in that, The moving mechanism includes a set of traveling wheels at the bottom of the moving platform (31), the set of traveling wheels includes a clamping wheel (33) that clamps and supports the side of the first support beam / second support beam, the moving platform (31) is provided with a traveling motor (34), the traveling motor (34) is driven connected to at least one of the clamping wheels (33).

3. The rebar positioning frame for road expansion joint construction according to claim 2, characterized in that, The first crossbeam (11) and the second crossbeam (12) are respectively provided with slide rails on their horizontal outer sides. The shafts of the pressing wheels (33) are arranged vertically and respectively on both sides of the moving platform (31). Each pressing wheel (33) is symmetrically pressed against the outer side of the slide rail.

4. The rebar positioning frame for road expansion joint construction according to claim 1, characterized in that, The support frame (21) includes a longitudinally arranged support leg with downwardly extending support legs at both ends. The latch (22) is located at the bottom of the support leg. The bottom of the latch (22) has a semi-circular arc structure, and the inner diameter of the semi-circular arc is adapted to the outer diameter of the reinforcing bar to be pressed in.

5. The rebar positioning frame for road expansion joint construction according to claim 4, characterized in that, The support frame (21) is a U-shaped structure with the opening facing downwards. The slots (22) are respectively arranged at both ends of the U-shaped structure. The slots (22) are semi-circular structures with the opening facing downwards. The inner diameter of the slots (22) is adapted to the outer diameter of the steel bar that needs to be pressed down.

6. The rebar positioning frame for road expansion joint construction according to claim 1, characterized in that, Flexible pads are provided at the handles at both ends of the first crossbeam (11) / the second crossbeam (12). The controller includes a first switch electrically connected to the travel motor (34) and a second switch connected to the vibrator (32).

7. The rebar positioning frame for road expansion joint construction according to claim 6, characterized in that, The first crossbeam (11) and the second crossbeam (12) are straight steel rods, and the support frame (21) is a U-shaped bent steel rod with the opening facing downward. The bent steel rod is welded or bound to the bottom of the straight steel rod, and the middle part of the bent steel rod is lower than the height of the first crossbeam (11) and the second crossbeam (12).

8. The rebar positioning frame for road expansion joint construction according to claim 1, characterized in that, The vibrator (32) is an electric vibrator (32). The power supply is connected to the electric vibrator (32) through a power switch. The controller is located at the support handle. The controller is connected to the vibrator (32) through a flexible wire moving mechanism. The power supply is connected to the controller.

9. The rebar positioning frame for road expansion joint construction according to claim 1, characterized in that, The vibrator (32) is a pneumatic vibrator (32). The air pump is connected to the pneumatic vibrator (32) through a switch valve. The switch valve is located at the support handle. The switch valve is connected to the air pump at one end through a flexible air tube and to the pneumatic vibrator (32) at the other end.

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