Device and method for improving chiseling efficiency of pneumatic drill

Abstract

The invention discloses a device for improving the chiseling efficiency of a pneumatic drill, and the device comprises an air leg which is installed at the holding end of the pneumatic drill and supports the pneumatic drill at a certain height; the sleeve assembly comprises a steel sleeve, an upper handle and a lower handle, the steel sleeve is arranged outside a drill rod of the pneumatic drill in a sleeving mode, a drill bit is exposed out of the steel sleeve so that the steel sleeve can be perpendicular to a dam body, a level bubble is arranged on the steel sleeve, and the upper handle and the lower handle are installed on the upper portion and the lower portion of the steel sleeve respectively. The invention discloses a method for improving the chiseling efficiency of a pneumatic drill. According to the method, rapid and high-quality chiseling construction on the concrete surface of the old dam body in the vertical direction can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of roughening technology. More specifically, the present invention relates to a device and method for improving the roughening efficiency of a pneumatic drill. Background Art

[0002] In the risk removal and reinforcement project, the concrete surface of the old dam body must be roughened before concrete pouring. According to the conventional method, the concrete surface of the old dam body is usually chiseled by a pneumatic pick. The input of manpower, materials and machinery is large, and the construction efficiency is not high. How to improve the vertical roughening efficiency of the concrete surface of the dam body is the key factor restricting the construction progress of this operation. At present, when using a pneumatic drill for roughening, due to the lack of a professional hand-held tool, only manual auxiliary positioning can be relied on, the construction efficiency is low, and it is difficult to control the verticality during the roughening process. The roughening quality can only initially meet the design requirements. Summary of the Invention

[0003] The present invention provides a device and method for improving the roughening efficiency of a pneumatic drill, which can achieve rapid and high-quality roughening construction in the vertical direction on the concrete surface of the old dam body.

[0004] To achieve these and other advantages in accordance with the present invention, there is provided a device for improving the roughening efficiency of a pneumatic drill, comprising: An air leg, which is installed at the holding end of the pneumatic drill to support the pneumatic drill at a certain height; A casing assembly, which includes a steel casing, an upper handle, and a lower handle. The steel casing is sleeved outside the drill rod of the pneumatic drill and exposes the drill bit to make it perpendicular to the dam body. A spirit level bubble is provided on the steel casing, and the upper handle and the lower handle are respectively installed above and below the steel casing.

[0005] Preferably, it further includes: A bracket assembly, which includes a base, a support frame, a rotating bracket, and a traction bracket. The base is temporarily installed on the dam body, the support frame is vertically installed on the base, a first hinge point is provided at the upper part of the support frame and is rotatably connected to one end of the rotating bracket, a second hinge point is provided at the upper middle part of the support frame and is rotatably connected to one end of the traction bracket. The top surface of the rotating bracket supports the steel casing. The middle part to the other end of the rotating bracket is in a U-shaped structure with the opening facing downwards. A chute is provided on the opposite side of the U-shaped structure, and a tooth is provided on the bottom surface of the U-shaped structure. The middle part of the traction bracket is also connected to the support frame between the first hinge point and the second hinge point by a tension spring. The middle part to the other end of the traction bracket is in a Y-shaped structure. A sliding shaft is provided at the other end of the traction bracket, and the sliding shaft slides through the chute. The size of the sliding shaft is slightly smaller than that of two adjacent teeth to be clamped between two adjacent teeth.

[0006] Preferably, it also includes: The cam frame is an assembly of a plurality of positioning members, each of which is an assembly of a plurality of positioning members, each of which is an assembly of a plurality of positioning members, each of which is an assembly of a plurality of positioning members.

[0007] A method for improving the roughing efficiency of a hand-held pneumatic drill, based on the device for improving the roughing efficiency of a hand-held pneumatic drill, the method comprising: Step 1: Remove debris, sand and stains from the surface of the dam concrete and set up roughening points; Step 2: Install the air leg to a height close to the chiseling position, install a hand drill, install a steel casing sleeved on the outside of the drill rod of the hand drill to expose the drill bit, adjust the position of the steel casing by the upper and lower handles, complete the horizontal positioning by observing the level bubble, and fix the height of the air leg; Step 3: Start the hand drill to perform the roughening operation.

[0008] Preferably, step 2 comprises: Step 2.1: Install the air leg to a height close to the roughening position, install a hand drill, install a steel casing sleeved on the outside of the drill rod of the hand drill to expose the drill bit, align the drill bit with the roughening position, and preliminarily adjust the position of the steel casing by the upper handle and the lower handle; Step 2.2: Temporarily install the base on the dam body below the steel casing so that the top surface of the rotating bracket supports the steel casing, and rotate the rotating bracket to accurately adjust the position of the steel casing, specifically: The rotating bracket is rotated to move the sliding shaft in the sliding groove to adjust the angle of the rotating bracket relative to the supporting bracket. When the rotating bracket is rotated to horizontal, the horizontal positioning is completed by observing the level bubble so that the top of the sliding shaft of the traction bracket is clamped between two adjacent clamping teeth of the rotating bracket; Step 2.3: Fix the air leg height.

[0009] Preferably, step 2.2 comprises: Step 2.21: temporarily installing the base on the dam body below the steel casing so that the top surface of the rotating bracket supports the steel casing; Step 2.22: Rotate the rotating bracket to move the sliding shaft in the sliding groove to adjust the angle of the rotating bracket relative to the supporting frame so that the rotating bracket rotates to be approximately horizontal; Step 2.23: Start the motor to drive the active rod to rotate, so that the positioning frame drags the sliding shaft in the sliding groove to an appropriate position during the rotation process to adjust the angle of the rotating bracket relative to the supporting frame. When the rotating bracket rotates to horizontal, the horizontal positioning is completed by observing the level bubble, and the motor is turned off to stop driving the active rod to rotate, so that the bottom of the sliding shaft of the traction bracket is clamped between the two adjacent vertical frames of the positioning frame, and the top of the sliding shaft of the traction bracket is clamped between the two adjacent teeth of the rotating bracket.

[0010] The present invention has at least the following beneficial effects: First, the present invention supports the hand pneumatic drill by means of air legs and adjusts the angle of the hand pneumatic drill by means of a casing assembly, thereby being able to realize rapid and high-quality roughening construction in the vertical direction on the concrete surface of an old dam body. The present invention has a simple structure and good applicability, greatly improves the roughening efficiency during the roughening process of the hand pneumatic drill, liberates labor, and is widely applicable to the market for roughening construction of large-area concrete vertical surfaces.

[0011] Second, the air leg of the present invention is a lifting and adjustable structure, and the air leg supports the hand pneumatic drill to reach the height of the roughening position. For stability, a three-legged structure can be adopted. The steel casing is sleeved on the outside of the drill rod. The length of the steel pipe can be 1.2 m. A rotating structure is installed so that the drill rod can rotate relative to the steel casing. The upper handle and the lower handle are arranged opposite to each other and are made of ø12 steel bars. They are used to adjust the angle of the steel casing so that the drill rod is perpendicular to the concrete surface. The level bubble is embedded and installed on the steel casing. By observing the level bubble, the horizontality of the drill rod is manually judged, and the angle of the drill rod of the hand pneumatic drill is quickly judged, thereby ensuring the roughening quality. When in use, the air leg is supported first, and then the steel casing is manually sleeved on the end of the drill rod. The upper handle and the lower handle are manually used to adjust the angle of the drill rod to carry out roughening construction. The drill rod of the hand pneumatic drill is combined with the handheld tool to achieve the construction efficiency of the hand pneumatic drill roughening operation by construction personnel, and provide a working surface in time for steel bar binding and template installation operations.

[0012] Thirdly, the setting of the support assembly of the present invention enables the bottom of the steel casing to have support, facilitating the maintenance of the levelness of the steel casing and promoting the smooth progress of the roughening operation. The base can be temporarily installed on the dam body by means of anchoring, etc., and is located below the roughening site. Since the base may be inclined, by adjusting the angle of the rotating bracket relative to the support bracket, the rotating bracket is kept horizontal to support the steel casing to make the steel casing horizontal. The support bracket, the rotating bracket, and the traction bracket form a triangular structure, and the setting of the tension spring improves the stability of the triangular structure. The position of the steel casing is initially adjusted to be close to horizontal through the upper handle and the lower handle, and then accurately adjusted to be horizontal through the rotating bracket. The first hinge point on the support bracket is used for rotatably connecting with the rotating bracket, and the second hinge point is used for rotatably connecting with the traction bracket. The C-shaped structure of the rotating bracket is provided with a chute, forming a pair of support sites for the sliding shaft. The Y-shaped structure of the traction bracket is provided with a sliding shaft, and the sliding shaft passes through a pair of chutes. The C-shaped structure of the rotating bracket is also provided with a clamping tooth, and the height of the clamping tooth is higher than that of the chute, that is, the clamping tooth does not hinder the movement of the sliding shaft. The sliding shaft can be clamped between adjacent clamping teeth. When adjusting the rotation angle of the rotating bracket, the sliding shaft slides in a pair of chutes. When the rotation angle of the rotating bracket is adjusted to be horizontal, the gravity of components such as the steel casing and the drill rod is pressed on the rotating bracket, and the top of the sliding shaft is clamped between two adjacent clamping teeth, restricting the sliding shaft from moving relative to a pair of chutes and thus restricting the rotating bracket from rotating relative to the support bracket, keeping the rotating bracket horizontal, and thus maintaining the levelness of the steel casing.

[0013] Fourth, the setting of the positioning assembly of the present invention avoids the problem of the sliding shaft being disengaged from the locking teeth due to the vibration during the roughening operation, causing the rotating bracket to deflect. By limiting the displacement of the sliding shaft at multiple points, the stable setting of the rotating bracket is ensured, thereby ensuring the horizontal setting of the steel casing, and improving the safety and practicality of the roughening operation. The positioning box is formed below the rotating bracket. The positioning box is used to set components such as the positioning frame and the positioning structure. The positioning frame supports the sliding shaft, drives the sliding shaft to move, and disengages from the sliding shaft during the rotation process, so that the sliding shaft can accurately adjust its position in the slide groove, and the positioning frame positions the sliding shaft through the power structure. The third top support is connected and linked to the first bottom support and the second bottom support through an active rod, a connecting rod, and a driven rod. The first bottom support and the active rod, the active rod and the connecting rod, the connecting rod and the third top support, the connecting rod and the driven rod, and the driven rod and the second bottom support are all rotationally connected, which can be achieved by means of a pin shaft. The active rod is the power source, the active rod makes a circular motion, the driven rod makes a periodic swing, and the connecting rod is connected to the driven rod. The rod makes irregular circular motion, so that when the positioning frame rotates to above the lower edge of the slide groove, the sliding shaft is dragged to move, until the positioning frame continues to rotate to below the lower edge of the slide groove and detaches from the sliding shaft. The sliding shaft is mounted on the slide groove and has been displaced. Through this motor drive form, the sliding shaft moves to a predetermined position, so that the rotation angle of the rotating bracket is horizontal, and the gravity of components such as steel casing and drill rod is pressed on the rotating bracket. The top of the sliding shaft is clamped between two adjacent teeth, and the bottom is clamped between two adjacent vertical frame bodies of the positioning frame, limiting the sliding shaft from moving relative to a pair of slide grooves, thereby limiting the rotating bracket from rotating relative to the support frame, keeping the rotating bracket horizontal, thereby maintaining the horizontality of the steel casing.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a technical solution of the present invention; Figure 2 A schematic diagram of the structure of a bracket assembly according to a technical solution of the present invention; Figure 3 A schematic diagram of the structure of a positioning component of a technical solution of the present invention; Figure 4 The present invention is a schematic diagram of a process for accurately adjusting the position of a steel casing using a positioning assembly according to a technical solution of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0017] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0018] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0019] like Figure 1 As shown, the present invention provides a device for improving the roughing efficiency of a hand-held pneumatic drill, comprising: An air leg 1, which is mounted on the holding end of the hand drill 2 to support the hand drill 2 at a certain height; The casing assembly includes a steel casing 3, an upper handle 4, and a lower handle 5. The steel casing 3 is sleeved on the outside of the drill rod of the hand drill 2 and the drill bit is exposed so that it is perpendicular to the dam body 9. A level bubble 6 is provided on the steel casing 3. The upper handle 4 and the lower handle 5 are installed above and below the steel casing 3 respectively.

[0020] The air leg 1 of the present invention is a lifting and adjustable structure, which supports the hand pneumatic drill 2 to reach the height of the roughening position. For stability, a three-leg structure can be adopted. The steel casing 3 is sleeved on the outside of the drill rod, and the length of the steel pipe can be 1.2 m. A rotating structure is installed so that the drill rod can rotate relative to the steel casing 3. The upper handle 4 and the lower handle 5 are arranged opposite to each other and are made of ø12 steel bars, and are used to adjust the angle of the steel casing 3 so that the drill rod is perpendicular to the concrete surface. The level bubble 6 is embedded and installed on the steel casing 3. By observing the level bubble 6, the horizontality of the drill rod can be manually judged, and the angle of the drill rod of the hand pneumatic drill 2 can be quickly judged, thereby ensuring the roughening quality. When in use, the air leg 1 is first supported, and then the steel casing 3 is manually sleeved on the end of the drill rod, and the upper handle 4 and the lower handle 5 are manually used to adjust the angle of the drill rod to carry out roughening construction. The drill rod of the hand pneumatic drill 2 is combined with a handheld tool, which can realize the construction efficiency of the roughening operation of the hand pneumatic drill 2 by construction personnel, and provide a working surface in time for steel bar binding and template installation operations.

[0021] In the above technical solution, the pneumatic leg 1 supports the hand-held pneumatic drill 2, and the angle of the hand-held pneumatic drill 2 is adjusted through the casing assembly, so as to achieve rapid and high-quality roughening construction in the vertical direction on the concrete surface of the old dam body 9. The structure of the present invention is simple and has good applicability, greatly improving the roughening operation efficiency during the roughening process of the hand-held pneumatic drill 2, liberating the labor force, and being widely applicable to the market for roughening construction of large-area concrete vertical surfaces.

[0022] As Figure 2 shown, in another technical solution, it further includes: A bracket assembly 7, which includes a base 71, a support frame 72, a rotating bracket 73, and a traction bracket 74. The base 71 is temporarily installed on the dam body 9. The support frame 72 is vertically installed on the base 71. The upper part of the support frame 72 is provided with a first hinge point and is rotatably connected to one end of the rotating bracket 73. The middle upper part of the support frame 72 is provided with a second hinge point and is rotatably connected to one end of the traction bracket 74. The top surface of the rotating bracket 73 supports the steel casing 3. The middle part to the other end of the rotating bracket 73 is in a U-shaped structure with the opening facing downwards. A chute 75 is provided on the opposite side of the U-shaped structure. The lower bottom surface of the U-shaped structure is provided with teeth. The middle part of the traction bracket 74 is also connected to the support frame 72 between the first hinge point and the second hinge point through a tension spring 77. The middle part to the other end of the traction bracket 74 is in a Y-shaped structure. The other end of the traction bracket 74 is provided with a sliding shaft 76. The sliding shaft 76 slides through the chute 75. The size of the sliding shaft 76 is slightly smaller than that of two adjacent teeth, so as to be clamped between two adjacent teeth.

[0023] In the above technical scheme, the setting of the bracket assembly 7 allows the bottom of the steel casing 3 to be supported, which is convenient for maintaining the horizontality of the steel casing 3 and promoting the smooth progress of the roughening operation. The base 71 can be temporarily installed on the dam body 9 by anchoring or other means, and is located below the roughening position. Since the base 71 may be tilted, the angle of the rotating bracket 73 relative to the support frame 72 is adjusted to keep the rotating bracket 73 horizontal, so as to support the steel casing 3 to make the steel casing 3 horizontal. The support frame 72, the rotating bracket 73, and the traction bracket 74 form a triangular structure. The setting of the tension spring 77 improves the stability of the triangular structure. The position of the steel casing 3 is preliminarily adjusted to near the horizontal by the upper handle 4 and the lower handle 5, and then accurately adjusted to the horizontal by the rotating bracket 73. The first hinge point on the support frame 72 is used for rotational connection with the rotating bracket 73, and the second hinge point is used for rotational connection with the traction bracket 74 The y-shaped structure of the rotating bracket 73 is provided with a slide groove 75 to form a pair of supporting positions for the slide shaft 76. The Y-shaped structure of the traction bracket 74 is provided with a slide shaft 76. The slide shaft 76 passes through the pair of slide grooves 75. The y-shaped structure of the rotating bracket 73 is also provided with a latching tooth. The height of the latching tooth is higher than the slide groove 75, that is, the latching tooth does not hinder the movement of the slide shaft 76. The slide shaft 76 can be clamped between adjacent latching teeth. When the rotation angle of the rotating bracket 73 is adjusted, the slide shaft 76 slides in the pair of slide grooves 75. When the rotation angle of the rotating bracket 73 is adjusted to the horizontal, the gravity of the steel casing 3 and the drill rod and other components is pressed on the rotating bracket 73. The top of the slide shaft 76 is clamped between two adjacent latching teeth, limiting the movement of the slide shaft 76 relative to the pair of slide grooves 75, thereby limiting the rotation of the rotating bracket 73 relative to the support frame 72, keeping the rotating bracket 73 horizontal, thereby maintaining the horizontality of the steel casing 3.

[0024] like Figure 3 As shown, in another technical solution, it also includes: Positioning component 8, which includes a positioning box 81, a positioning frame 82, and at least one positioning structure. The top of the positioning box 81 is open and integrally formed below the U-shaped structure. The positioning frame 82 includes a horizontal frame body and a plurality of vertical frame bodies above. The distance between adjacent two vertical frame bodies is set to accommodate the sliding shaft 76. The positioning structure includes a first bottom support 83, a second bottom support 84, a third top support 85, a driving rod 86, a connecting rod 87, a driven rod 88, and a motor. The first bottom support 83 and the second bottom support 84 are installed on the positioning box 81. The third top support 85 is installed at the bottom of the horizontal frame body. The third top support 85 is located between the first bottom support 83 and the second bottom support 84. One end of the driving rod 86 is rotatably connected to the first bottom support 83 and fixedly connected to the output shaft of the motor. The other end of the driving rod 86 is rotatably connected to one end of the connecting rod 87. The other end of the connecting rod 87 is rotatably connected to one end of the driven rod 88. The other end of the driven rod 88 is rotatably connected to the second bottom support 84. The length of the driving rod 86 is less than the height of the first bottom support 83. The length of the driven rod 88 is less than the height of the second bottom support 84. The length of the connecting rod 87 is less than the horizontal projection of the hinge points of the first bottom support 83 and the second bottom support 84. The first bottom support 83 is lower than the second bottom support 84. An extension rod is inclined in the middle of the connecting rod 87, and the free end of the extension rod is rotatably connected to the third top support 85.

[0025] In the above technical solution, the setting of the positioning component 8 avoids the problem of the sliding shaft 76 being disengaged from the locking teeth due to the vibration during the roughening operation, causing the rotating bracket 73 to deflect. By limiting the displacement of the sliding shaft 76 at multiple points, the stable setting of the rotating bracket 73 is ensured, thereby ensuring the horizontal setting of the steel casing 3, thereby improving the safety and practicality of the roughening operation. The positioning box 81 is formed below the rotating bracket 73. The positioning box 81 is used to set components such as the positioning frame 82 and the positioning structure. The positioning frame 82 supports the sliding shaft 76 during the rotation process, drives the sliding shaft 76 to move, and disengages from the sliding shaft 76, so that the sliding shaft 76 can accurately adjust its position in the sliding groove 75, and the positioning frame 82 can position the sliding shaft 76 through the electric structure. The third top support 85 is connected and linked with the first bottom support 83 and the second bottom support 84 through the active rod 86, the connecting rod 87, and the driven rod 88. The first bottom support 83 and the active rod 86, the active rod 86 and the connecting rod 87, the connecting rod 87 and the third top support 85, the connecting rod 87 and the driven rod 88, and the driven rod 88 and the second bottom support 84 are all rotatably connected, which can be achieved by a pin shaft. The active rod 86 is the power source, the active rod 86 makes a circular motion, and the driven rod 88 The rod 88 makes periodic swing and the connecting rod 87 makes irregular annular motion, so that the positioning frame 82 drags the sliding shaft 76 to move when it rotates to above the lower edge of the slide groove 75, until the positioning frame 82 disengages from the sliding shaft 76 when it continues to rotate to below the lower edge of the slide groove 75. The sliding shaft 76 is mounted on the slide groove 75 and has been displaced. Through this motor drive form, the sliding shaft 76 moves to a predetermined position, so that the rotation angle of the rotating bracket 73 is horizontal, and the gravity of the steel casing 3 and the drill rod and other components is pressed on the rotating bracket 73. The top of the sliding shaft 76 is clamped between two adjacent teeth, and the bottom is clamped between two adjacent vertical frames of the positioning frame 82, limiting the sliding shaft 76 from moving relative to a pair of slide grooves 75, thereby limiting the rotating bracket 73 from rotating relative to the support frame 72, keeping the rotating bracket 73 horizontal, thereby maintaining the horizontality of the steel casing 3.

[0026] A method for improving the roughening efficiency of a hand pneumatic drill 2, based on the device for improving the roughening efficiency of a hand pneumatic drill 2, the method comprising: Step 1: remove the debris, sand and stains on the concrete surface of the dam body 9, ensure the cleanliness of the roughening operation surface, which is conducive to the improvement of the roughening effect and the subsequent construction quality, and arrange the roughening sites so that the roughening operation has a clear positioning and guidance, thereby improving the accuracy and uniformity of the roughening; Step 2: Install the air leg 1 to be close to the same height as the roughening position, install the hand drill 2, and install the steel casing 3 to be sleeved on the outside of the drill rod of the hand drill 2 and expose the drill bit, which not only protects the drill rod, but also improves the roughening efficiency, and ensures that the depth and shape of the roughening meet the requirements. Adjust the position of the steel casing 3 through the upper handle 4 and the lower handle 5, complete the horizontal positioning by observing the level bubble 6, fix the height of the air leg 1, ensure the horizontality and verticality of the roughening operation, and improve the precision and construction quality of the roughening; Step 3, start the hand drill 2 to perform the roughening operation.

[0027] In the above technical scheme, the preparation work for the roughening operation is sufficient, the equipment configuration is reasonable, the positioning is accurate, the operation is simple and the adaptability is strong. During the roughening operation, the horizontality and verticality of the steel casing 3 are guaranteed, and the impact force and rotational force of the drill bit can act evenly on the concrete surface. The roughening pit-shaped marks formed are clear, uniform and beautiful, which is conducive to the bonding and curing in the subsequent construction. It is a roughening method worthy of promotion and application, suitable for roughening operations on the concrete surface of the dam body 9 of different hardness and thickness, and has strong adaptability and flexibility.

[0028] Preferably, step 2 comprises: Step 2.1: Install the air leg 1 to be close to the same height as the roughening position, install the hand drill 2, install the steel casing 3, sleeve it on the outside of the drill rod of the hand drill 2 and expose the drill bit, align the drill bit with the roughening position, and preliminarily adjust the position of the steel casing 3 by the upper handle 4 and the lower handle 5; Step 2.2: Temporarily install the base 71 on the dam body 9 below the steel casing 3. Temporary installation can install the base 71 at the roughened position below, so that the top surface of the rotating bracket 73 supports the steel casing 3. Rotate the rotating bracket 73 to accurately adjust the position of the steel casing 3. Specifically: The rotating bracket 73 is rotated to move the slide shaft 76 in the slide groove 75 to adjust the angle of the rotating bracket 73 relative to the support bracket 72. When the rotating bracket 73 is rotated to the horizontal, the horizontal positioning is completed by observing the level bubble 6, so that the top of the slide shaft 76 of the traction bracket 74 is clamped between two adjacent clamping teeth of the rotating bracket 73; Step 2.3: Fix the height of gas leg 1.

[0029] In the above technical solution, the position of the steel casing 3 is preliminarily adjusted by the upper handle 4 and the lower handle 5, and then the position of the steel casing 3 is precisely adjusted by rotating the rotating bracket 73 through the temporary installation base 71, so that the steel casing 3 remains stable during the roughening process, and is not easy to shake or shift, ensuring that the drill bit can accurately align with the roughening position, making the roughening operation more accurate, reducing errors and unnecessary repetitive work. The design of the rotating bracket 73 and the traction bracket 74 enables the device to adapt to the roughening requirements of different heights and angles. Whether it is a horizontal or inclined dam body 9 surface, the roughening requirements can be met by adjusting the angle of the rotating bracket 73.

[0030] As a preference, Figure 3 , 4 As shown, step 2.2 includes: Step 2.21: temporarily installing the base 71 on the dam body 9 below the steel casing 3. The temporary installation may be to install the base 71 at the roughened position below so that the top surface of the rotating bracket 73 supports the steel casing 3; Step 2.22: Rotate the rotating bracket 73 to move the sliding shaft 76 in the sliding groove 75 to adjust the angle of the rotating bracket 73 relative to the supporting frame 72 so that the rotating bracket 73 rotates to be approximately horizontal; Step 2.23: Start the motor to drive the active rod 86 to rotate, so that the positioning frame 82 drags the sliding shaft 76 to move to an appropriate position in the sliding groove 75 during the rotation process to adjust the angle of the rotating bracket 73 relative to the supporting frame 72. When the rotating bracket 73 rotates to horizontal, the horizontal positioning is completed by observing the level bubble 6, and the motor is turned off to stop driving the active rod 86 to rotate, so that the bottom of the sliding shaft 76 of the traction bracket 74 is clamped between the two adjacent vertical frames of the positioning frame 82, and the top of the sliding shaft 76 of the traction bracket 74 is clamped between the two adjacent teeth of the rotating bracket 73.

[0031] In the above technical solution, the active rod 86 is driven to rotate by a motor, thereby driving the sliding shaft 76 to move precisely in the sliding groove 75, thereby achieving fine adjustment of the angle of the rotating bracket 73. This mechanized adjustment method is more accurate than manual adjustment, ensuring that the steel casing 3 and the drill bit can be maintained at a very stable and precise height, thereby improving the accuracy of the roughening operation. During the adjustment process, the steel casing 3 and the drill bit will not shake or deviate, ensuring the stability and continuity of the roughening operation. Precise adjustment and a stable support structure reduce safety hazards during the roughening process, and operators can focus more on the roughening operation itself without worrying about safety issues caused by equipment shaking or deviation.

[0032] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0033] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A device for improving the roughing efficiency of a hand drill, characterized in that: Comprising: A leg, which is installed at the holding end of the hand-held pneumatic drill to support the hand-held pneumatic drill at a certain height; A casing assembly, which includes a steel casing, an upper handle, and a lower handle. The steel casing is sleeved outside the drill rod of the hand-held pneumatic drill and exposes the drill bit to make it perpendicular to the dam body. A spirit level bubble is provided on the steel casing, and the upper handle and the lower handle are respectively installed above and below the steel casing.

2. The device for improving the roughening efficiency of a hand drill according to claim 1, characterized in that: Further comprising: A bracket assembly, which includes a base, a support frame, a rotating bracket, and a traction bracket. The base is temporarily installed on the dam body, the support frame is vertically installed on the base, a first hinge point is provided at the upper part of the support frame and is rotatably connected to one end of the rotating bracket, a second hinge point is provided at the middle-upper part of the support frame and is rotatably connected to one end of the traction bracket. The top surface of the rotating bracket supports the steel casing. The middle part to the other end of the rotating bracket is in a U-shaped structure with an open bottom, a chute is provided on the opposite side of the U-shaped structure, and a tooth is provided on the bottom surface of the U-shaped structure. The middle part of the traction bracket is also connected to the support frame between the first hinge point and the second hinge point through a tension spring. The middle part to the other end of the traction bracket is in a Y-shaped structure, and a sliding shaft is provided at the other end of the traction bracket. The sliding shaft slides through the chute, and the size of the sliding shaft is slightly smaller than the adjacent two teeth to be clamped between the adjacent two teeth.

3. The device for improving the roughening efficiency of a hand drill according to claim 2, characterized in that: Further comprising: A positioning assembly, which includes a positioning box, a positioning frame, and at least one positioning structure. The top of the positioning box is open and integrally formed below the U-shaped structure. The positioning frame includes a horizontal frame body and a plurality of vertical frame bodies above. The distance between adjacent two vertical frame bodies is set to accommodate the sliding shaft. The positioning structure includes a first bottom support, a second bottom support, a third top support, a driving rod, a connecting rod, a driven rod, and a motor. The first bottom support and the second bottom support are installed on the positioning box, the third top support is installed at the bottom of the horizontal frame body, and the third top support is located between the first bottom support and the second bottom support. One end of the driving rod is rotatably connected to the first bottom support and is fixedly connected to the output shaft of the motor. The other end of the driving rod is rotatably connected to one end of the connecting rod. The other end of the connecting rod is rotatably connected to one end of the driven rod. The other end of the driven rod is rotatably connected to the second bottom support. An extension rod is obliquely arranged in the middle of the connecting rod, and the free end of the extension rod is rotatably connected to the third top support.

4. A method for improving the roughening efficiency of a hand drill, characterized in that: Based on the device for improving the chiseling efficiency of a hand-held pneumatic drill according to claim 3, the method includes: Step 1, Remove sundries, sand grains, and stains on the concrete surface of the dam body, and lay out chiseling sites; Step 2, Install the leg at a height close to the chiseling site, install the hand-held pneumatic drill, install the steel casing sleeved outside the drill rod of the hand-held pneumatic drill and expose the drill bit, adjust the position of the steel casing through the upper handle and the lower handle, complete the horizontal positioning by observing the spirit level bubble, and fix the height of the leg; Step 3, Start the hand-held pneumatic drill to perform chiseling operations.

5. The method for improving the roughening efficiency of a hand drill according to claim 4, characterized in that: Step 2 includes: Step 2.1: Install the air leg to a height close to the roughening position, install a hand drill, install a steel casing sleeved on the outside of the drill rod of the hand drill to expose the drill bit, align the drill bit with the roughening position, and preliminarily adjust the position of the steel casing by the upper handle and the lower handle; Step 2.2: Temporarily install the base on the dam body below the steel casing so that the top surface of the rotating bracket supports the steel casing, and rotate the rotating bracket to accurately adjust the position of the steel casing, specifically: The rotating bracket is rotated to move the sliding shaft in the sliding groove to adjust the angle of the rotating bracket relative to the supporting bracket. When the rotating bracket is rotated to horizontal, the horizontal positioning is completed by observing the level bubble so that the top of the sliding shaft of the traction bracket is clamped between two adjacent clamping teeth of the rotating bracket; Step 2.3: Fix the air leg height.

6. The method for improving the roughening efficiency of a hand drill according to claim 5, characterized in that: Step 2.2 includes: Step 2.21: temporarily installing the base on the dam body below the steel casing so that the top surface of the rotating bracket supports the steel casing; Step 2.22: Rotate the rotating bracket to move the sliding shaft in the sliding groove to adjust the angle of the rotating bracket relative to the supporting frame so that the rotating bracket rotates to be approximately horizontal; Step 2.23: Start the motor to drive the active rod to rotate, so that the positioning frame drags the sliding shaft in the sliding groove to an appropriate position during the rotation process to adjust the angle of the rotating bracket relative to the supporting frame. When the rotating bracket rotates to horizontal, the horizontal positioning is completed by observing the level bubble, and the motor is turned off to stop driving the active rod to rotate, so that the bottom of the sliding shaft of the traction bracket is clamped between the two adjacent vertical frames of the positioning frame, and the top of the sliding shaft of the traction bracket is clamped between the two adjacent teeth of the rotating bracket.

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