Adjustable support for assisting percussion drill in steel bar planting and drilling

Abstract

The utility model relates to an adjustable support for assisting a percussion drill in steel bar planting and drilling, which is used as a percussion drill in steel bar planting and drilling assisting device and is provided with an annular base main body, a plurality of horizontal rods are arranged on the base main body, preferably telescopic rods are adopted, and at least two horizontal rods are provided with laser emitting devices capable of emitting vertical laser beams. The two horizontal rods provided with vertical face laser beams are perpendicular to each other, the fan-shaped laser beams intersect on the axis of the base body, the laser emitting devices are provided with laser pens used for generating linear laser beams and lens devices used for converting the linear laser beams into the fan-shaped laser beams, and the laser emitting devices are detachably connected to the top faces of the outer ends of the corresponding horizontal rods. The supporting legs of the base body are height-adjustable conical supporting legs and are installed on the base body in a foldable connection mode. In the drilling process of the percussion drill, the drilling direction can be kept consistent with the intersecting line of the fan-shaped laser beam all the time, so that the drilling direction is perpendicular to the horizontal plane all the time, and a drilled hole is perpendicular to the horizontal plane.

Description

Technical Field

[0001] This utility model relates to an adjustable support for auxiliary impact drills for rebar drilling. Background Technology

[0002] Impact drilling is frequently used in water conservancy projects. Workers use handheld impact drills to drill holes at designated locations. However, in rebar anchoring drilling, the nature of the construction process and the characteristics of the tools used make it difficult to control the verticality deviation of the drill holes, especially in areas with severe carbonization of the concrete substrate, where the hole formation rate and the pass rate of hole quality drop sharply. Because rebar anchoring drilling requires high precision and is affected by many factors in subsequent construction, a method should be designed that allows for effective control, simple structure, ease of use, and high precision control in drilling on highly carbonized concrete substrates. Utility Model Content

[0003] The purpose of this invention is to reduce the verticality deviation of impact drill holes.

[0004] The technical solution of this utility model is: an adjustable support for auxiliary impact drill rebar drilling, which has an annular base body, multiple horizontal rods on the base body, and at least two horizontal rods are equipped with laser emitting devices that can emit vertical (plane perpendicular to the horizontal plane) laser beams.

[0005] Preferably, there are two horizontal bars.

[0006] Preferably, the two horizontal bars equipped with the vertical laser beam are perpendicular to each other.

[0007] Preferably, the horizontal bar is a telescopic bar (a bar that can extend or retract / has an adjustable length).

[0008] For example, the horizontal bar uses a telescopic sleeve structure, consisting of two or more sleeves that slide together sequentially (allowing relative sliding, or sliding insertion). Position locking devices between the sleeves can be configured in any suitable manner, such as using set screws or resilient pins.

[0009] Preferably, the inner end of the horizontal bar is detachably connected to the side of the base body. For example, a screw hole can be provided on the side (outer side) of the base body, and a stud structure (a threaded cylindrical structure) can be provided on the inner end of the horizontal bar, which is screwed (threaded connection) onto the corresponding screw hole of the base body.

[0010] Preferably, the support legs are tapered, with a tapered lower part, to facilitate stable support on the foundation.

[0011] Furthermore, the number of legs (e.g., tapered legs) can be three or more, usually installed at equal intervals / angular distances under the base body to form a stable support for the base body.

[0012] Preferably, the connection between the support legs and the base body is a detachable connection (a connection that can be disassembled without damage).

[0013] Preferably, the legs are height-adjustable.

[0014] Preferably, a two-dimensional level (a level capable of measuring the levelness in two orthogonal directions on a plane, namely the X-axis and the Y-axis; it can be a single level that simultaneously measures and displays the levelness in both the X-axis and Y-axis directions, or it can consist of two levels that separately measure and display the levelness in the X-axis and Y-axis directions) is provided on the base body and / or the support rod. The level plane displayed by the two-dimensional level is the level plane / reference plane where the base body (support) is located. The level rod and the laser emitting device should be set based on this reference plane, so that the fan-shaped laser beam emitted by the laser emitting device (the plane in which the fan-shaped laser beam is located) is perpendicular to this reference plane.

[0015] Preferably, the connection between the legs and the base body is a foldable connection (a connection that allows both to be folded relative to each other).

[0016] Preferably, the laser emitting device includes a laser pointer (laser emitter) for generating a straight laser beam and a lens device for converting the straight laser beam (or point beam) into a fan-shaped beam. The plane containing the fan-shaped beam is a vertical plane (perpendicular to the reference plane determined by the base body, i.e., the plane where the base body is located; since the base body is horizontal during use, these vertical / fan-shaped laser beams are perpendicular to the horizontal plane). The installation position and rotation angle (or orientation) of the laser pointer and lens device can be appropriately set so that the fan-shaped beam emitted by the laser emitting device passes through the axis of the base body. During use, since the fan-shaped beams emitted by each laser emitting device are vertical planes, the intersection line is a vertical line perpendicular to the horizontal plane. Also, since the fan-shaped beams emitted by each laser emitting device pass through the axis of the base body, the intersection line of each fan-shaped laser beam is the axis of the base body. Therefore, the drill bit of the impact drill can be kept perpendicular to the horizontal plane using the intersection line of each fan-shaped laser beam as a reference, forming a hole perpendicular to the horizontal plane.

[0017] Any suitable lens device can be used to convert the thin, straight beam of light emitted by the laser pointer into a fan-shaped beam. For example, a lens device using a Powell prism group can be used.

[0018] The laser emitting device is equipped with a laser emitting device base for mounting the laser pointer and lens device. The laser emitting device is mounted on the outer end of the corresponding horizontal bar (away from the main body of the base) through the laser emitting device base, so as to form a sufficient intersection length at the axial position of the main body of the base.

[0019] The beneficial effects of this utility model are as follows: This utility model is an auxiliary device for rebar drilling with an impact drill. During the drilling process, each excitation and emission device forms a fan-shaped laser beam perpendicular to the horizontal plane (reference plane), and the intersection line of each fan-shaped laser beam is located on the axis of the base body. This allows the axis (center point) of the base body to be located above the drilling position. With the intersection line of each fan-shaped laser surface as a reference, the drilling direction is always consistent with the intersection line of the fan-shaped laser beam during the drilling process, thereby ensuring that the drilling direction is always perpendicular to the horizontal plane and that the drilled hole is perpendicular to the horizontal plane. This greatly reduces the verticality deviation and ensures the drilling quality. The use of tapered legs helps prevent slippage on the ground / foundation, ensuring support stability. The telescopic horizontal bar allows for adjustment of its length to suit site conditions and drilling requirements. The foldable leg connectors on the base facilitate easy carrying and storage; the adjustable leg height ensures the base remains level; and the two-dimensional level on the base and / or support rods facilitates adjustment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the support leg structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the foldable connection structure of the support leg on the base body of this utility model.

[0023] Figure 4 This is a schematic diagram of another foldable connection structure of the support leg on the base body of this utility model;

[0024] Figure 5 This is a schematic diagram of the horizontal bar structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the laser device structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the detachable connection structure of the laser device of this utility model on a horizontal bar;

[0027] Figure 8This is a schematic diagram of the laser beam conversion principle involved in this utility model;

[0028] Figure 9 A schematic diagram of the laser surface positioning principle involved in this utility model;

[0029] Figure 10 This is a schematic diagram illustrating how this utility model is used.

[0030] The diagram shows the following markings: 1. Reference plane; 2. First sector laser beam; 3. Second sector laser beam; 10. Base body; 20. Support leg; 21. Support leg mounting base; 22. Connection structure that fits into the base body; 23. Horizontal through hole; 24. Stud; 25. Support leg body; 26. Screw hole; 27. Fastening bolt; 28. Nut; 30. Horizontal bar; 31. Sleeve; 32. Inner end of horizontal bar; 40. Laser emitting device; 41. Laser emitting device base; 43. Lens device; 44. Snap-fit ​​structure; 45. First magnet; 46. Second magnet. Detailed Implementation

[0031] The following, in conjunction with the accompanying drawings and usage instructions, provides a further explanation of this adjustable support for rebar drilling using an auxiliary impact drill (hereinafter referred to as the auxiliary device):

[0032] I. Basic Structure

[0033] See Figures 1 to 10 The base body 10 is circular with a space in the middle suitable for impact drilling operations. The base body is supported by three legs 20. Two mutually perpendicular horizontal rods 30 are connected to the outside of the base. A laser emitting device 40 is installed on the top surface of the outer end of each horizontal rod, which emits two fan-shaped laser beams, which can be referred to as the first fan-shaped laser beam 2 and the second fan-shaped laser beam 3, respectively. The two fan-shaped laser beams intersect at the axis of the base body. Thus, when the base body is adjusted to a horizontal state, the two fan-shaped laser beams are perpendicular to the horizontal plane (reference plane) 1. A two-dimensional level 50 is set up for the horizontal adjustment of the base body.

[0034] II. Composition of Auxiliary Devices

[0035] The functional settings and basic structure of this utility model include:

[0036] 1) Scalable support structure for laser emitting device

[0037] The horizontal bar 30 installed on the base body 10 is a telescopic bar, and the laser emitting device 40 is installed on the top of the outer end of the telescopic bar. Due to the different working surface areas provided by the construction site, and the fact that the drilling locations for rebar installation are mostly located on the top of the gate pier, the working space range is uncertain. Therefore, the adjustable support device is made of stainless steel telescopic components that are tightly connected, can be freely extended and retracted, are compact in size, and are sturdy.

[0038] The horizontal bar adopts a telescopic sleeve structure, consisting of two or more sleeves 31 that slide together in sequence (allowing relative sliding, or sliding insertion). Position locking devices between the sleeves can be set in any suitable manner, such as using set screws or elastic pins.

[0039] The inner end of the horizontal bar is detachably connected to the side of the base body. For example, a screw hole can be provided on the side (outer side) of the base body, and a stud structure (a threaded cylindrical structure) can be provided on the inner end 32 of the horizontal bar. The stud structure is screwed (threaded connection) onto the corresponding screw hole of the base body.

[0040] The horizontal bar can be a square bar (a bar with a square or rectangular cross-section), and the sleeve used to assemble the telescopic bar is a square tube (a tube with a square or rectangular cross-section). This allows one side (side plane) of the horizontal bar to face upwards, facilitating the stable installation of the laser emitting device.

[0041] 2) Horizontal detection device

[0042] A two-dimensional level 50 is installed on the base body and / or the horizontal bar (partially or entirely). Due to the different nature of rebar drilling projects and construction locations, it is difficult to ensure that the construction surface is level in most drilling bases. However, rebar drilling requires the drilling angle to be perpendicular to the construction horizontal plane. Therefore, the auxiliary drilling device uses a level detection device to assist in leveling the construction work surface. Moreover, the level detection device should not be too large; a small, lightweight, and easy-to-use universal level is used to solve the problem of the levelness of the construction work surface.

[0043] 3) Base support and fixing device

[0044] Due to operational requirements during construction, this device needs to be fixed to the work surface to ensure accurate drilling even under the impact of the impact drill, guaranteeing accurate hole positioning and verticality within specified limits. Furthermore, the auxiliary device needs frequent repositioning during drilling to advance to the next hole. Therefore, the support legs 20 used for base fixation are compact, lightweight, foldable, and adjustable tapered legs. These tapered legs are connected to the base body using rotatable bearings to ensure a tight connection and allow for free folding. Adjustable bolts (studs 24) are used for upper and lower structural connection and adjustment. During on-site setup, the level of the main body can be adjusted via the adjustable legs to ensure instrument stability during operation, ease of repositioning, and overall device levelness.

[0045] The tapered support leg consists of a support body 25 and a bracket mounting base 21. The support body is tapered, or the lower part of the support body is tapered. The support body and the support mounting base are connected by a threaded connection structure consisting of screw holes and studs. One of the relevant screw holes 26 and studs (or bolts) 24 is located on the bottom surface of the support mounting base (for example, a downwardly extending stud / stud structure can be provided on the bottom surface of the support mounting base), and the other is located on the top surface of the support body (for example, a vertically threaded blind hole can be provided on the top surface of the support body). Thus, by rotating the support body, the support height of the support leg on the base body (the distance of the corresponding part of the base body from the ground / foundation surface) can be adjusted.

[0046] The base body 10 and the support leg mounting base are equipped with a connecting structure that allows them to fit together. These connecting structures are secured together with fastening bolts. In use, the legs are fixed downwards. The bracket is placed on the ground / foundation where drilling is required, with the center of the base body aligned vertically with the drilling location on the ground / foundation. Drilling is then performed. After drilling, the fastening bolts are loosened slightly, the support leg body is folded inwards to a horizontal position, and then the fastening bolts are tightened to secure the support leg mounting base, preventing swaying or detachment.

[0047] The support bracket can be cylindrical, and the connecting structure 22 for fitting with the base body is flat and located on top of the support bracket. It has a horizontal through hole 23 perpendicular to this flat structure for passing a fastening bolt. A corresponding threaded hole can be provided on the base body. The fastening bolt 27 passes through the corresponding through hole on the flat structure of the support bracket and is screwed onto the corresponding threaded hole on the base body. When the base body also uses a flat structure to connect with the support bracket, this flat structure can also have a through hole. The fastening bolt passes through the corresponding through holes on both the base body and the support bracket, and a matching nut 28 is screwed onto the fastening bolt. Depending on actual needs, other axial hole mating rotational connection methods can also be used, and a device can be provided to automatically fix the support leg in both the vertically facing and horizontally folded states, such as a corresponding spring positioning device.

[0048] 4) Verticality calibration device

[0049] Due to operational requirements during construction, the angle of the rebar hole must be kept perpendicular to the horizontal reference plane at all times during rebar drilling. However, due to the characteristics of the impact drilling method, it is impossible to accurately guarantee that the angle of the rebar hole is always perpendicular to the reference plane during the rebar drilling process. Therefore, when using an impact drill for rebar drilling, auxiliary equipment that can be calibrated at any time is required to ensure construction quality. To solve this problem, the calibration device of this device uses a laser pen 42 placed perpendicularly to each other and a laser lens with a straight line as a lens device 43. It is installed on the magnetic beam splitter base, which is used as the laser emitting device base 41, and magnetically attracted to the surface of the telescopic rod to calibrate the center point of the drilling and assist the rebar drilling operation.

[0050] One of the laser mirror components has a built-in Powell prism group that can disperse the dot beam emitted by the laser pointer into a line beam to meet construction needs.

[0051] The laser emitting device base can be provided with snap-fit ​​slots or other mounting structures that conform to the laser pointer and lens (lens device), respectively. The laser pointer and lens device are respectively mounted on their respective mounting structures (e.g., snap-fitted into their respective snap-fit ​​slots). The laser emitting device base can be mounted on the top surface of the outer end (adjacent to the outer end) of the horizontal rod in any suitable form. Preferably, a detachable connection method that is easy to assemble and disassemble can be used. For example, a snap-fit ​​structure 44 can be used for fixation, and / or a first magnet 45 and a second magnet 46 can be used for fixation. If necessary, a buckle device or other means that can clamp the laser pointer and lens device to the base can be provided for further fixation, or a clamp or other means can be used for fixation with screws.

[0052] III. On-site setup of auxiliary devices

[0053] Before installing the equipment, check the performance of all components to ensure that each component is in good condition, without damage, misalignment, or insufficient performance, so as to ensure the normal and effective progress of subsequent construction.

[0054] First, connect the universal level to the end of the stainless steel telescopic rod and secure it with the corresponding clips to ensure that the universal level and the upper surface of the telescopic rod are tightly connected and on the same horizontal plane, thus ensuring the levelness of the working surface during subsequent leveling work and construction.

[0055] Next, screw the bolts at the ends of the telescopic rods into the corresponding holes on the main base, ensuring a secure connection between them and that the upper surfaces of each component are parallel to the same plane. Then, extend the stainless steel telescopic rods to the appropriate length and install the laser pointer at the beam splitter's clip, ensuring a good connection between them. Next, raise the tapered adjustable fixed legs at the bottom of the base and adjust the height of each leg using the universal level mounted on the adjustable rod ends, ensuring that each level is balanced and that the entire device is level. Simultaneously, turn on the laser pointer, converting the laser beam into two beams perpendicular to the working surface and mutually perpendicular, ensuring that the rebar drilling rods are always at the focal point of the laser beam during subsequent construction.

[0056] IV. Debugging of Auxiliary Devices

[0057] Inspect the connectivity and operational safety of all components of the installed auxiliary drilling device, and perform equipment debugging. After debugging, open the base legs, place the device on the movable base surface, and slightly shake the base surface to simulate the vibration scenario during impact drilling, testing the stability and operation of the base legs. Simultaneously, adjust the telescopic rods at both ends to different lengths to test the device's stability under different working space conditions, ensuring that the device can operate well under concrete surface vibration during drilling without any tilting or slippage of the telescopic rods. Then, turn on the laser pointer and test its laser beam conversion performance and operational stability, ensuring that workers can adjust the verticality of the rebar drilling at any time based on the laser beam intersection during construction. After successful debugging, extend the telescopic rods to the appropriate length according to the actual project conditions for drilling.

[0058] V. Inspection of the rebar drilling process

[0059] To prevent collapse, damage, and significant verticality deviations in the rebar anchoring holes caused by excessive drilling depth and severe carbonization of the concrete substrate, a slow and uniform drilling technique is employed. The drill rod is constantly monitored to ensure it is positioned at the intersection of the two perpendicular laser planes. During operation, the drill rod should be advanced slowly and uniformly into the anchoring hole until the required depth is achieved, pausing briefly to ensure the hole wall is smooth, uniform, and the verticality meets requirements. Before drilling begins, the drill rod should be placed at the drilling point, ensuring it is initially positioned at the laser intersection. Auxiliary devices should be correctly positioned around the drilling point, ensuring the top of the drill rod is at the drilling point and the rod body is at the laser focal point. Drilling then commences. Throughout the process, the drill rod's position at the laser intersection should be constantly checked. Any deviation should be adjusted promptly, but the adjustment should not be excessive to avoid hole collapse, deviation, or excessively large hole diameters.

[0060] VI. Quality Inspection of Rebar Drilling

[0061] After the rebar drilling process is completed, slowly withdraw the drilling operating rod and clean the hole to ensure it is free of dust, debris, oil, and organic impurities. Then, insert the closed drilling operating rod into the hole until it reaches the bottom, aligning it along the center of the hole. Observe whether the operating rod is positioned at the intersection of the two laser lines to check the quality of the rebar drilling. If it is not at the intersection, record the deviation value and calculate the verticality deviation to verify if it is within the design deviation range, thus verifying the quality of the rebar drilling.

[0062] VII. Work after drilling is completed

[0063] After drilling is completed, remove the drilling rod from the rebar insertion hole and check the appearance quality of the drilled hole for any collapse or damage to ensure the quality of the rebar insertion. Simultaneously check that the base is in its initial state, without any displacement or tilting, and that the universal level on the upper part of the telescopic rod is balanced. Ensure the entire auxiliary device operates smoothly and effectively. After confirming everything is correct, turn off the laser pointer, remove the universal level and laser pointer from the telescopic rod, and retract the telescopic rod to its shortest position. Unscrew the telescopic rod to detach it from the base body. Next, fold the tapered support legs at the bottom of the base inwards to its minimum position. Properly store all auxiliary device components for future use. Finally, promptly clean the area around the concrete rebar insertion hole at the construction site to prevent dust and debris from re-entering the hole and affecting subsequent construction.

[0064] Unless otherwise specified, the preferred and optional technical means disclosed in this utility model can be arbitrarily combined to form several different specific embodiments when one preferred or optional technical means is a further limitation of another technical means.

Claims

1. An adjustable support for assisting impact drills in rebar drilling, characterized in that... The device comprises a ring-shaped base body with multiple horizontal bars. At least two horizontal bars are equipped with laser emitting devices capable of emitting vertical laser beams. Each laser emitting device includes a laser pointer for generating a straight laser beam and a lens device for converting the straight laser beam into a fan-shaped beam. The laser emitting device also includes a laser emitting device base for mounting the laser pointer and the lens device. The laser emitting device base is equipped with mounting structures that are respectively matched with the laser pointer and the lens device. The laser pointer and the lens device are respectively mounted on their respective mounting structures. The laser emitting device base is mounted on the top surface of the outer end of the horizontal bars in a detachable connection manner.

2. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 1, characterized in that... There are two horizontal bars.

3. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 2, characterized in that... Two horizontal bars with vertical laser beams are perpendicular to each other.

4. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 1, characterized in that... The inner end of the horizontal bar is detachably connected to the side of the base body.

5. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 4, characterized in that... The horizontal bar is a telescopic bar.

6. The adjustable support for auxiliary impact drilling of rebar holes as described in any one of claims 1-5, characterized in that... The base supports are tapered, with the lower part being tapered.

7. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 6, characterized in that... The base supports are height-adjustable.

8. The adjustable support for auxiliary impact drilling of rebar holes as described in claim 7, characterized in that... The base support legs are connected to the base body in a foldable manner.

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