A handheld reinforcing bar embedding device

Abstract

This utility model provides a handheld rebar embedding device. A downward-extending guide cylinder is centrally located on the base, and the guide cylinder is vertically continuous. A foot pedal is located at the center of the rear end of the base. A handle is fixedly connected to the rear end of the base and extends obliquely upward. A movable pressure rod is axially slidingly engaged with the guide cylinder and circumferentially fixed. The lower end of the movable pressure rod has a laterally extending, downward-opening latch, the inner diameter of which matches the outer diameter of the rebar to be embedded. A vibrator housing is fixedly connected to the base, and the vibrating end is drivenly connected to the upper end of the movable pressure rod. A controller is connected to the vibrator for control. This handheld rebar embedding device, operated by a single person, precisely positions the rebar to be embedded through the latch and uses high-frequency vibration to quickly embed the rebar below the road surface. It maintains consistent height at both ends of the embedded rebar, avoiding uneven embedding and improving the quality and efficiency of rebar embedding. It is suitable for use on road construction sites.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and in particular provides a handheld rebar embedding device. Background Technology

[0002] Dowel bars are typically made of plain round steel bars, especially in the placement of transverse expansion joints. When the surface layer thickness reaches 220 mm, the diameter of the dowel bar should be 28 mm (φ28), the minimum length should be 400 mm, and the maximum spacing should be 300 mm. The placement of dowel bars is based on transverse contraction and expansion joints, rather than simply between slabs. Generally, one expansion joint is placed every 200 meters, or dowel bars must be installed at intersections of roads with other roads or connections to bridges.

[0003] Longitudinal joint treatment requires the installation of tie rods, allowing transverse reinforcement to penetrate the joint. Smooth reinforcement bars are used for contraction joints, and slurry plates and sliding dowel bars are required for transverse expansion joints with a width of 20mm. The vibration process must ensure that the reinforcing mesh does not shift, and the curing standards are the same as for ordinary concrete pavements. By properly setting tie rods and dowel bars, stress concentration and cracking problems caused by temperature changes and loads on the concrete pavement can be effectively addressed, thereby improving the overall performance of the pavement. Therefore, in actual construction, the installation must be strictly in accordance with the specifications to ensure project quality. Currently, there is no suitable rebar embedding device for single-person hand operation; generally, a handheld steel fork is used for rebar embedding, which not only makes accurate positioning difficult but also easily results in the embedded rebar being higher at one end and lower at the other, affecting construction quality and efficiency. Utility Model Content

[0004] Based on this, the present invention provides a handheld rebar embedding device, which can accurately locate the rebar to be embedded and quickly embed the rebar below the road surface, keeping the height of both ends of the embedded rebar consistent, thereby improving the quality and efficiency of rebar embedding construction.

[0005] To achieve the above objectives, this utility model provides a handheld rebar embedding device, including a base, a handle, a movable pressure rod, and a vibrator. A downwardly extending guide cylinder is centrally located on the base, and the guide cylinder is vertically continuous. A foot pedal is located at the center of the rear end of the base. The handle is fixedly connected to the rear end of the base and extends obliquely upward. The movable pressure rod is axially slidingly engaged with the guide cylinder and circumferentially fixed. The lower end of the movable pressure rod has a laterally extending, downward-opening latch, the inner diameter of which matches the outer diameter of the rebar to be embedded. The vibrator housing is fixedly connected to the base, the vibrating end is drivenly connected to the upper end of the movable pressure rod, and the controller is controlled by the vibrator.

[0006] Furthermore, the handle comprises two parts, with their front ends symmetrically connected to the rear ends of the frame. The rear ends of the handles are bent to be parallel to the plane of the base. This facilitates the worker's grip and helps maintain a horizontal position.

[0007] Furthermore, a crossbar is provided at the bottom of the movable pressure rod, and both ends of the crossbar are provided with downwardly extending bottom vertical plates of the same height. Each bottom vertical plate has a latch at its bottom, and the middle part of the crossbar is connected to the lower end of the movable pressure rod. The latch is a semi-circular arc or a downward-opening triangle.

[0008] Furthermore, a damping spring is provided between the movable pressure rod and the guide cylinder. One end of the damping spring is fixedly connected to the guide cylinder, and the other end is fixedly connected to the movable pressure rod and is in a compressed state.

[0009] Furthermore, the guide cylinder has a vertically extending guide groove inside, and the movable pressure rod has a guide block adapted to the guide groove on its outer surface; or, the guide cylinder has a vertically extending guide block inside, and the movable pressure rod has a guide groove adapted to the guide block on its outer surface; or, the inner cavity cross-section of the guide cylinder is a regular polygon, and the cross-section of the movable pressure rod is a regular polygon adapted to the inner cavity cross-section.

[0010] Furthermore, the vibrator is a high-frequency vibration cylinder, the movable rod of the high-frequency vibration cylinder extends downward, and the upper end of the movable pressure rod is provided with an axially extending recessed hole, and the movable rod of the high-frequency vibration cylinder is fixedly inserted into the recessed hole.

[0011] Furthermore, the high-frequency vibration cylinder is an electrically driven cylinder. The power supply to the electrically driven cylinder is separate from the base. The power supply is connected to the electric vibration cylinder via a power cord, and the controller is a power switch located on the handle. This facilitates switching operation. The power cord is a flexible, elastic cord, suitable for remote connection and movement.

[0012] Furthermore, the high-frequency vibration cylinder is a pneumatically driven cylinder. The air pump connected to the pneumatically driven cylinder is separately installed from the base. The air pump is connected to the pneumatically driven cylinder through an air supply line, and the controller is a pneumatic switch located on the handle. The air pump is an air compressor, installed on a hardened surface.

[0013] The beneficial effects of the handheld rebar embedding device provided by this utility model are as follows:

[0014] The handheld rebar embedding device provided by the single-person handheld unit uses a clamp to accurately position the rebar to be embedded, and uses a vibrator to vibrate at high frequency to quickly embed the rebar below the road surface. It keeps the height of both ends of the embedded rebar consistent, avoiding the problem of one end being higher than the other, thus improving the quality and efficiency of rebar embedding construction. It is suitable for use on road construction sites. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a three-dimensional structural diagram of a handheld rebar embedding device.

[0017] Figure 2 yes Figure 1 A diagram illustrating the split state.

[0018] Figure 3 This is a side view of a handheld rebar embedding device.

[0019] Figure 4 This is a three-dimensional structural diagram showing the connection between the base and the handle.

[0020] Figure 5 This is a three-dimensional structural diagram of the movable pressure bar.

[0021] In the picture,

[0022] 11—Base, 12—Guide cylinder, 13—Foot pedal;

[0023] 2-Handle;

[0024] 31-Modible pressure bar, 32-Horizontal bar, 33-Bottom vertical plate, 34-Clamping slot;

[0025] 4-Vibrator. Detailed Implementation

[0026] 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.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the present invention provides a handheld rebar embedding device, comprising a base 11, a handle 2, a movable pressure rod 31, and a vibrator 4. A downwardly extending guide cylinder 12 is centrally located on the base 11, the guide cylinder 12 being vertically continuous. A foot pedal 13 is located at the center of the rear end of the base 11. The handle 2 is fixedly connected to the rear end of the base 11 and extends obliquely upward. The movable pressure rod 31 is axially slidingly engaged with the guide cylinder 12 and circumferentially fixed. The lower end of the movable pressure rod 31 is provided with a laterally extending, downward-opening latch 34, the inner diameter of which is adapted to the outer diameter of the rebar to be embedded. The vibrator 4 housing is fixedly connected to the base 11, the vibrating end is drivenly connected to the upper end of the movable pressure rod 31, and the controller is controlled by the vibrator 4.

[0028] The present invention provides a method for using a handheld rebar embedding device: the construction worker holds the handle, aligns the clamp with the rebar placed on the concrete pavement, and then starts the vibrator. The vibrator transmits the vibration load to the clamp through the movable pressure rod, causing the rebar to vibrate at a high frequency. At the same time, under the action of the device's gravity, the rebar is quickly embedded into the concrete pavement. During the process, the construction worker holds the handle horizontally to keep the clamp horizontal, thereby keeping the rebar pressed into a horizontal state and avoiding one end being higher than the other. Then, the worker lifts the handle to make the clamp leave the pavement and proceeds to the next rebar embedding operation.

[0029] The beneficial effects of the handheld rebar embedding device provided by this utility model are as follows:

[0030] The handheld rebar embedding device provided by the single-person handheld unit uses a clamp to accurately position the rebar to be embedded, and uses a vibrator to vibrate at high frequency to quickly embed the rebar below the road surface. It keeps the height of both ends of the embedded rebar consistent, avoiding the problem of one end being higher than the other, thus improving the quality and efficiency of rebar embedding construction. It is suitable for use on road construction sites.

[0031] like Figure 4 As shown, the handle 2 includes two handles and the front ends are symmetrically connected to the rear ends of the frame. The rear ends of the handle 2 are bent and parallel to the plane where the base 11 is located, so that the construction personnel can grip it and keep it in a horizontal state.

[0032] like Figure 5 As shown, a crossbar 32 is provided at the bottom of the movable pressure rod 31. Both ends of the crossbar 32 are provided with downward-extending, uniformly sized bottom vertical plates 33. Each bottom vertical plate 33 has a latch 34 at its bottom. The middle part of the crossbeam is connected to the lower end of the movable pressure rod 31. The latch is either a semi-circular arc or a downward-opening triangle.

[0033] In a preferred embodiment, a vibration damping spring is provided between the movable pressure rod 31 and the guide cylinder 12. One end of the vibration damping spring is fixedly connected to the guide cylinder 12, and the other end is fixedly connected to the movable pressure rod 31 and is in a compressed state. This can mitigate vibration and make the pressing process of the reinforcing bar gentle.

[0034] To keep the movable pressure rod 31 circumferentially fixed, the guide cylinder 12 has a vertically extending guide groove inside, and the outer surface of the movable pressure rod 31 has a guide block adapted to the guide groove; alternatively, the guide cylinder 12 has a vertically extending guide block inside, and the outer surface of the movable pressure rod 31 has a guide groove adapted to the guide block; or, the inner cavity cross-section of the guide cylinder 12 is a regular polygon, and the cross-section of the movable pressure rod 31 is a regular polygon adapted to the shape of the inner cavity cross-section. All of the above structures can keep the movable pressure rod 31 circumferentially fixed and prevent the movable pressure rod 31 from rotating.

[0035] During implementation, the vibrator 4 is a high-frequency vibration cylinder. The movable rod of the high-frequency vibration cylinder extends downward, and the upper end of the movable pressure rod 31 is provided with an axially extending recessed hole. The movable rod of the high-frequency drive cylinder is fixedly inserted into the recessed hole and fixed by fastening bolts.

[0036] In some embodiments, the high-frequency vibration cylinder is an electrically driven cylinder. The power supply connected to the electrically driven cylinder is separately set from the base 11. The power supply is connected to the electrically vibrating cylinder through a power line. The controller is a power switch set on the handle 2 for easy switching operation. The power line is a flexible elastic line suitable for remote connection and movement.

[0037] In other embodiments, the high-frequency vibration cylinder is a pneumatically driven cylinder, and the air pump connected to the pneumatically driven cylinder is separate from the base 11. The air pump is connected to the pneumatically driven cylinder through an air supply line. The controller is a pneumatic switch set on the handle 2, and the air pump is an air compressor installed on a hardened road surface.

[0038] 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 handheld rebar embedding device, characterized in that, include: The base (11) has a downwardly extending guide cylinder (12) centrally located, and the guide cylinder (12) is vertically through; the base (11) has a foot pedal (13) at the middle of its rear end. The handle (2) is fixedly connected to the rear end of the base (11) and extends obliquely upward; The movable pressure rod (31) is axially slidingly fitted with the guide cylinder (12) and circumferentially fixed. The lower end of the movable pressure rod (31) is provided with a laterally extending, downward-opening latch (34), the inner diameter of which is adapted to the outer diameter of the reinforcing bar to be pressed in; and The vibrator (4) has its housing fixedly connected to the base (11), and its vibrating end is driven to the upper end of the movable pressure rod (31). The controller is connected to the vibrator (4) for control.

2. The handheld rebar embedding device according to claim 1, characterized in that, The handle (2) includes two handles and is symmetrically connected to the rear ends of the frame. The rear ends of the handles (2) are bent and parallel to the plane of the base (11).

3. The handheld rebar embedding device according to claim 1, characterized in that, The bottom of the movable pressure rod (31) is provided with a crossbar (32), and both ends of the crossbar (32) are provided with bottom vertical plates (33) that extend downward and are of the same height. Each bottom vertical plate (33) is provided with a slot (34) at the bottom. The middle part of the crossbar (32) is connected to the lower end of the movable pressure rod (31).

4. The handheld rebar embedding device according to claim 3, characterized in that, A damping spring is provided between the movable pressure rod (31) and the guide cylinder (12). One end of the damping spring is fixedly connected to the guide cylinder (12), and the other end is fixedly connected to the movable pressure rod (31) and is in a compressed state.

5. The handheld rebar embedding device according to claim 3 or 4, characterized in that, The guide cylinder (12) has a vertically extending guide groove inside, and the movable pressure rod (31) has a guide block on its outer surface that matches the guide groove; or, the guide cylinder (12) has a vertically extending guide block inside, and the movable pressure rod (31) has a guide groove on its outer surface that matches the guide block; or, the inner cavity cross-section of the guide cylinder (12) is a regular polygon, and the cross-section of the movable pressure rod (31) is a regular polygon that matches the shape of the inner cavity cross-section.

6. The handheld rebar embedding device according to claim 1, characterized in that, The vibrator (4) is a high-frequency vibration cylinder. The movable rod of the high-frequency vibration cylinder extends downward. The upper end of the movable pressure rod (31) is provided with an axially extending sinking hole. The movable rod of the high-frequency vibration cylinder is fixedly inserted into the sinking hole.

7. The handheld rebar embedding device according to claim 6, characterized in that, The high-frequency vibration cylinder is an electric drive cylinder. The power supply connected to the electric drive cylinder is set separately from the base (11). The power supply is connected to the electric vibration cylinder through a power line. The controller is a power switch set on the handle (2).

8. The handheld rebar embedding device according to claim 6, characterized in that, The high-frequency vibration cylinder is a pneumatic cylinder. The air pump connected to the pneumatic cylinder is set separately from the base (11). The air pump is connected to the pneumatic cylinder through the air supply pipe. The controller is a pneumatic switch set on the handle (2).

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