An automatic positioning and punching device for bridge concrete guardrails

Abstract

This utility model discloses an automatic positioning and drilling device for bridge concrete guardrails, relating to the field of bridge construction technology. Its purpose is to simultaneously position multiple bolt holes on a single bracket. The device includes: a guide component mounting frame; an electric drill positioning frame is installed inside the guide component mounting frame; the electric drill positioning frame can reciprocate in a direction perpendicular to the bridge concrete guardrail; the electric drill positioning frame is connected to a control component that controls its reciprocating movement; and multiple sets of electric drills are spaced apart on the electric drill positioning frame. This utility model achieves precise positioning and drilling operations on bridge concrete guardrails by combining mechanical positioning with manual control.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to an automatic positioning and drilling device for bridge concrete guardrails. Background Technology

[0002] After the construction of bridge concrete railings is completed, brackets for electromechanical pipelines are often installed on the outside of the railings. Each bracket is typically fixed with multiple expansion bolts. Since the brackets are custom-made products, their bolt holes are pre-drilled according to the design drawings; however, the bolt holes on the bridge concrete railings need to be drilled on-site. To ensure the brackets can be installed smoothly, the bolt holes on the brackets and railings must correspond one-to-one.

[0003] The current conventional construction method involves installing a suspended work platform on the concrete guardrail. Workers stand in the platform and measure the distance between each hole with a ruler; then they mark the distance on the guardrail with a marker; finally, they drill holes one by one using a handheld electric drill. The drilling accuracy is mainly limited by the accuracy of the markings and the skill level of the operators. Moreover, workers need to perform long-term high-altitude work outside the guardrail; if working on the median side of a highway bridge, the narrow median and limited working space will greatly increase the difficulty of drilling.

[0004] The utility model patent with announcement number CN222201130U discloses a drilling and positioning device for bridge concrete guardrails, which provides a solution for drilling and positioning a single bolt hole; however, each bracket has multiple bolts, and this utility model patent cannot simultaneously position multiple bolt holes on each bracket; and it fails to solve the risks of workers working at heights for long periods of time and the automation problem. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic positioning and drilling device for bridge concrete guardrails, which can simultaneously position multiple bolt holes on a single bracket.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] An automatic positioning and drilling device for bridge concrete guardrails includes: a guide component mounting frame, an electric drill positioning frame disposed on the inner side of the guide component mounting frame, the electric drill positioning frame being able to reciprocate along a direction perpendicular to the bridge concrete guardrail, the electric drill positioning frame being connected to a control component for controlling its reciprocating movement, and multiple sets of electric drills being disposed at intervals on the electric drill positioning frame.

[0008] Furthermore, the electric drill positioning frame includes a horizontal positioning frame and a vertical positioning frame vertically arranged on the horizontal positioning frame, with multiple sets of electric drills arranged on the vertical positioning frame.

[0009] Furthermore, the electric drill positioning frame also includes a guide rail fixed inside the guide component mounting bracket, and the transverse positioning frame is connected to the guide rail by a sliding sleeve.

[0010] Furthermore, the guide rail is cylindrical in shape.

[0011] Furthermore, the control assembly includes a joystick hinged to the top of the guide assembly mounting frame. The joystick is connected to the drill positioning frame via two steel wire ropes, which are respectively connected to both sides of the moving end of the drill positioning frame. Multiple guide pulleys are provided on the edge of the guide assembly mounting frame, and the steel wire ropes can move around the multiple guide pulleys.

[0012] Furthermore, a guardrail positioning bracket is provided on the top of the guide component mounting bracket.

[0013] Furthermore, the inner side of the guardrail positioning frame is equipped with multiple directional wheels.

[0014] Furthermore, the guardrail positioning frame is U-shaped.

[0015] This utility model has the following beneficial effects:

[0016] This invention achieves precise positioning of the electric drill perpendicular to the guardrail by coordinating the guide component mounting frame, the electric drill positioning frame, and the guide rail, ensuring accurate drilling positions and avoiding errors caused by manual operation. Multiple sets of electric drills spaced apart allow for simultaneous drilling of multiple holes, ensuring consistent hole spacing and meeting the standardized requirements of bridge guardrail construction. The close contact between the directional wheel and the guardrail surface, along with the guidance pulley's control over the wire rope, further reduces the device's skew during movement, improving the verticality and accuracy of the drilling.

[0017] The linkage design between the control lever and the wire rope allows the operator to quickly control the movement of the drill positioning frame, shortening the positioning time. The device can continuously complete drilling operations at multiple positions without frequent position adjustments, improving overall work efficiency.

[0018] By adjusting the position of the guardrail positioning frame and the spacing of the directional wheels, the device can adapt to bridge concrete guardrails of different sizes and shapes. The installation position of the electric drill on the longitudinal positioning frame is adjustable, and the hole spacing can be adjusted according to actual needs, improving the applicability of the device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the automatic positioning and drilling device for bridge concrete guardrails according to this utility model;

[0020] Figure 2 This is the front view of the automatic positioning and drilling device for bridge concrete guardrails according to this utility model.

[0021] Figure 3 This is a structural schematic diagram of the guardrail positioning frame;

[0022] Figures 1 to 3 The reference numerals in the attached drawings are respectively: 1-guide component mounting bracket, 2-electric drill positioning bracket, 21-lateral positioning bracket, 22-longitudinal positioning bracket, 23-guide rail, 24-sliding sleeve, 3-control component, 31-operating lever, 32-guide pulley, 33-wire rope, 4-guardrail positioning bracket, 41-directional wheel. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] In this utility model, the terms "longitudinal," "lateral," "vertical," "upper," "lower," "front," "rear," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the appendix. Figure 2 The orientation or positional relationship shown is for the purpose of describing the present invention only, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0025] Example 1

[0026] Please refer to Figure 1-3 This embodiment describes in detail the specific structure and working process of the automatic positioning and drilling device for bridge concrete guardrails. This device achieves precise positioning and drilling operations on the bridge concrete guardrails using a combination of mechanical positioning and manual control.

[0027] The main structure of this device includes a guide component mounting frame 1. An electric drill positioning frame 2 is provided on the inner side of the guide component mounting frame 1. The electric drill positioning frame 2 can reciprocate in a direction perpendicular to the concrete guardrail of the bridge. The electric drill positioning frame 2 is connected to a control component 3 that controls its reciprocating motion. Multiple sets of electric drills are arranged at intervals on the electric drill positioning frame 2.

[0028] The guide component mounting frame 1, serving as the support frame for the entire device, is welded from high-strength steel. Its inner side forms an installation space for mounting the electric drill positioning frame 2 and other auxiliary components. The bottom of the guide component mounting frame 1 is designed with a support structure that contacts the bridge railing foundation surface, ensuring the stability of the device during operation.

[0029] The electric drill positioning frame 2 includes a horizontal positioning frame 21 and a vertical positioning frame 22 vertically arranged on the horizontal positioning frame 21, and multiple sets of electric drills are arranged on the vertical positioning frame 22.

[0030] The transverse positioning frame 21 is welded from rectangular steel pipes, with its length perpendicular to the extension direction of the bridge's concrete guardrail. The longitudinal positioning frame 22, also made of rectangular steel pipes, is welded perpendicularly to the middle of the transverse positioning frame 21, forming a T-shaped structure. Alternatively, two transverse positioning frames 21 and two longitudinal positioning frames 22 can be welded end-to-end to form a rectangular frame structure. Multiple mounting holes can be provided on the longitudinal positioning frame 22 at equal or unequal intervals as needed for mounting an electric drill. The electric drill is fixedly connected to the longitudinal positioning frame 22 via steel clamps, which are adjustable to allow for easy adjustment of the drill's installation position as required.

[0031] The electric drill positioning frame 2 also includes a guide rail 23 fixed inside the guide component mounting frame 1, and the transverse positioning frame 21 is engaged with the guide rail 23 through a sliding sleeve 24.

[0032] To achieve the reciprocating motion of the electric drill positioning frame 2, in this embodiment, two cylindrical guide rails 23 are fixedly installed on the inner side of the guide component mounting frame 1. The guide rails 23 are made of high-precision cold-drawn steel pipe with a chrome-plated surface to improve wear resistance and corrosion resistance. The axial direction of the guide rails 23 is perpendicular to the extension direction of the bridge concrete guardrail, ensuring that the movement direction of the electric drill positioning frame 2 is consistent with the drilling direction. The upper and lower ends of the transverse positioning frame 21 are respectively engaged with the guide rails 23 via sliding sleeves 24. The sliding sleeves 24 are made of self-lubricating bearing material, and their inner holes form a precise fit with the outer diameter of the guide rails 23, ensuring that the electric drill positioning frame 2 moves smoothly and without jamming during operation.

[0033] To prevent the drill positioning frame 2 from detaching from the guide rail 23 during movement, rail stops are installed at both ends of the guide rail 23. The rail stops are detachable for easy installation and maintenance. When the drill positioning frame 2 moves to the end of the guide rail 23, the rail stops effectively prevent it from continuing to move, thus avoiding safety accidents.

[0034] The control component 3 includes a lever 31 hinged to the top of the guide component mounting frame 1. The lever 31 is connected to the drill positioning frame 2 via two steel wire ropes 33, which are respectively connected to both sides of the moving end of the drill positioning frame 2. Multiple guide pulleys 32 are provided on the edge of the guide component mounting frame 1, and the steel wire ropes 33 can move around the multiple guide pulleys 32.

[0035] The control component 3 is used to control the reciprocating motion of the drill positioning frame 2. In this embodiment, the control lever 31 is hinged to the top of the guide assembly mounting frame 1. The gripping end of the control lever 31 is designed with anti-slip texture for easy handling by the operator. Seven guide pulleys 32 are provided and installed at the positions requiring guidance on the guide assembly mounting frame 1. The guide pulleys 32 use deep groove ball bearings, and the outer ring is equipped with a nylon pulley to reduce the frictional resistance of the wire rope 33 during movement.

[0036] There are two steel wire ropes 33. One end of each steel wire rope 33 is fixedly connected to the drill positioning frame 2, and the other end of each steel wire rope 33 passes over the guide pulley 32 and is connected to the control lever 31. When the operator moves the control lever 31, the steel wire ropes 33, guided by the guide pulley 32, drive the drill positioning frame 2 to reciprocate along the guide rail 23. To ensure the stability of the drill positioning frame 2 during movement, the lengths of the two steel wire ropes 33 are precisely calculated to ensure that the force on both sides of the drill positioning frame 2 is even during the movement of the control lever 31.

[0037] To facilitate the positioning and installation of the device on the bridge concrete guardrail, a guardrail positioning frame 4 is installed on the top of the guide component mounting frame 1. Multiple directional wheels 41 are provided on the inner side of the guardrail positioning frame 4.

[0038] The guardrail positioning frame 4 is used to position the entire device on the bridge concrete guardrail. In this embodiment, the guardrail positioning frame 4 is fixedly connected to the top of the guide assembly mounting frame 1 by bolts, forming a stable overall structure. To reduce the movement resistance of the device on the guardrail, multiple directional wheels 41 are installed on the inner side of the guardrail positioning frame 4. The directional wheels 41 are made of high-strength nylon material, and their axial direction is parallel to the extension direction of the bridge concrete guardrail. The directional wheels 41 are connected to the guardrail positioning frame 4 by bearings, ensuring that the directional wheels 41 can rotate flexibly during the movement of the device.

[0039] The guardrail positioning bracket 4 adopts a U-shaped structure design, and its inner dimensions match the cross-sectional dimensions of the bridge concrete guardrail, making it easy to fit on top of the bridge concrete guardrail.

[0040] In actual operation, the operator first places the device on the bridge concrete railing and adjusts the position of the railing positioning frame 4 to ensure that the directional wheel 41 is in close contact with the railing surface. Then, the operator adjusts the installation position of the electric drill on the longitudinal positioning frame 22 according to the drilling position requirements. After adjustment, the operator starts the electric drill and moves the control lever 31 to move the electric drill positioning frame 2 along the guide rail 23 towards the railing. When the electric drill reaches the predetermined drilling position, the operator keeps the control lever 31 in the same position to allow the electric drill to continue working and complete the drilling operation. After drilling is completed, the operator reverses the control lever 31 to return the electric drill positioning frame 2 to the initial position, preparing for the next drilling operation.

[0041] To ensure the safety of the device during operation, this embodiment also incorporates several safety protection measures. First, a protective cover is installed within the movement range of the drill positioning frame 2 to prevent injury to the operator during drill movement. Second, a safety lock is installed at the gripping end of the control lever 31, which can lock the control lever 31 in its initial position when the device is not in use, preventing accidental operation. Furthermore, anti-loosening devices are installed at all connection points of the device to ensure stable operation even under vibration. To prevent the drill from falling off due to excessive vibration during operation, a drill reinforcement device, such as a locking clip, can be installed between the longitudinal positioning frame 22 and the drill after installation.

[0042] During the fabrication of the device, the electric drill positioning frame 2 is welded from multiple ordinary steel sections. To ensure welding quality, the weld leg size is no less than 6mm, and the weld surface is smooth, free of defects such as porosity and slag inclusions. After welding, the electric drill positioning frame 2 undergoes overall heat treatment to eliminate welding stress and improve its overall strength.

[0043] During the installation of the electric drill, the installation position is first marked on the longitudinal positioning frame 22 according to the required drilling spacing. Then, the electric drill is fixed to the longitudinal positioning frame 22 using steel clamps. The steel clamps are adjustable to accommodate adjustments based on the actual size of the electric drill. After installation, the electric drill is powered on for testing to ensure normal operation. Simultaneously, the connection between the electric drill and the longitudinal positioning frame 22 is checked for secureness to prevent loosening during operation. Two cylindrical guide rail sleeves 24 are installed at the upper and lower parts of the electric drill positioning frame 23, respectively. The sleeves 24 are precision machined to ensure accurate fit with the guide rails 23. After installation, the sleeves 24 are lubricated to reduce frictional resistance during movement. During the installation of the guide rails 23, the straightness of the guide rails 23 is first checked to ensure the straightness error is within the allowable range. Then, the guide rails 23 are fixed to the inner side of the guide assembly mounting frame 1 using bolts. After fixing, the guide rail 23 is adjusted for levelness to ensure that its axis is perpendicular to the extension direction of the bridge concrete guardrail. Finally, rail stops are installed at both ends of the guide rail 23 and a functional test is performed to ensure that they can effectively stop the movement of the electric drill positioning frame 2.

[0044] During the overall commissioning of the device, the control component 3 was first functionally tested. The operator moved the control lever 31 and observed the movement of the drill positioning frame 2. This ensured that the drill positioning frame 2 could reciprocate smoothly and without jamming along the guide rail 23. Simultaneously, the tension of the wire rope 33 was checked for uniformity to prevent the drill positioning frame 2 from tilting during movement due to uneven tension. Next, the positioning accuracy of the device was tested. Multiple drilling positions were marked on the bridge concrete railing, and the device's position was adjusted to ensure the drill accurately reached these positions. The deviation between the actual drilling position and the predetermined position was recorded for each drilling operation to ensure the device's positioning accuracy met design requirements.

[0045] To improve the applicability and flexibility of the device, this embodiment also considers a modular design. The guide component mounting bracket 1, the electric drill positioning bracket 2, the control component 3, and the guardrail positioning bracket 4 can all be designed as independent modules, facilitating combination and replacement according to actual needs. For example, when it is necessary to replace the electric drill with a different specification, only the steel clamp on the electric drill positioning bracket 2 and the electric drill need to be replaced, without requiring a large-scale modification of the entire device. This modular design not only improves the applicability of the device but also reduces maintenance costs.

[0046] Appropriate protective measures must be taken during the transportation and storage of the device. First, the device should be disassembled into individual modules, each packaged and secured separately. During packaging, shock-absorbing materials should be used to wrap each module to prevent collisions and damage during transport. Second, during storage, the device should be placed in a dry, well-ventilated environment to avoid moisture and corrosion. Simultaneously, the stored device should be regularly inspected and maintained to ensure it remains in good working order.

[0047] In summary, this embodiment details the specific structure and working process of the automatic positioning and drilling device for bridge concrete guardrails. By combining mechanical positioning with manual control, it achieves precise positioning and drilling operations of multiple sets of electric drills on the bridge concrete guardrails. Simultaneously, the device's safety and applicability are improved through the implementation of multiple safety protection measures and a modular design. In practical applications, operators only need to follow the description of this embodiment for operation and maintenance to ensure the device's normal operation.

[0048] Example 2

[0049] The automatic positioning and drilling device for bridge concrete guardrails in this embodiment is basically the same as that in Embodiment 1, with the main difference being that the control component 3 adopts an electric push rod control method. The control component 3 specifically includes an electric push rod, a motor, a reducer, a limit switch, and a control circuit. The motor drives the lead screw of the electric push rod to rotate through the reducer, causing the push rod to perform linear reciprocating motion. The push rod is connected to the side end of the electric drill positioning frame 2, driving the electric drill positioning frame 2 to perform reciprocating motion. The limit switch is used to limit the stroke of the push rod. When the push rod moves to the set position, the limit switch sends a signal to stop the motor. The control circuit can control the forward and reverse rotation of the motor as needed, thereby controlling the extension and retraction of the push rod.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning and drilling device for bridge concrete guardrails, characterized in that, include: A guide component mounting frame (1) is provided with an electric drill positioning frame (2) on its inner side. The electric drill positioning frame (2) can reciprocate along a direction perpendicular to the concrete guardrail of the bridge. The electric drill positioning frame (2) is connected to a control component (3) that controls its reciprocating motion. Multiple sets of electric drills are spaced apart on the electric drill positioning frame (2).

2. The automatic positioning and punching device for bridge concrete guardrails according to claim 1, characterized in that, The electric drill positioning frame (2) includes a horizontal positioning frame (21) and a vertical positioning frame (22) vertically arranged on the horizontal positioning frame (21), and multiple sets of electric drills are arranged on the vertical positioning frame (22).

3. The automatic positioning and punching device for bridge concrete guardrails according to claim 2, characterized in that, The electric drill positioning frame (2) also includes a guide rail (23) fixed inside the guide component mounting frame (1), and the transverse positioning frame (21) is engaged with the guide rail (23) through a sliding sleeve (24).

4. The automatic positioning and punching device for bridge concrete guardrails according to claim 3, characterized in that, The guide rail (23) is cylindrical in shape.

5. The automatic positioning and drilling device for bridge concrete guardrails according to claim 1, characterized in that, The control component (3) includes a control lever (31) hinged to the top of the guide component mounting frame (1). The control lever (31) is connected to the electric drill positioning frame (2) via two steel wire ropes (33). The two steel wire ropes (33) are respectively connected to both sides of the moving end of the electric drill positioning frame (2). Multiple guide pulleys (32) are provided on the edge of the guide component mounting frame (1), and the steel wire ropes (33) can move around the multiple guide pulleys (32).

6. The automatic positioning and drilling device for bridge concrete guardrails according to any one of claims 1 to 5, characterized in that, The top of the guide component mounting bracket (1) is provided with a guardrail positioning bracket (4).

7. The automatic positioning and drilling device for bridge concrete guardrails according to claim 6, characterized in that, The guardrail positioning frame (4) is provided with multiple directional wheels (41) on its inner side.

8. The automatic positioning and drilling device for bridge concrete guardrails according to claim 7, characterized in that, The guardrail positioning frame (4) is U-shaped.

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