Drilling auxiliary device for drill and blast method construction

Abstract

The application provides a drilling auxiliary device for drilling and blasting construction, which comprises a base, a positioning frame and an alignment part. The upper side of the base is connected with a lifting platform through a distance adjusting structure. The positioning frame is swingably arranged on the lifting platform. The alignment part is arranged in the positioning frame and has the freedom of moving along the length direction and the width direction of the positioning frame. A laser pointer is arranged on the alignment part. When the positioning frame is parallel to the construction surface, the position of the indicating point projected by the laser pointer can be changed by adjusting the position of the alignment part. The operator can mark manually according to the landing position of the laser indicating point or directly perform drilling operation. Compared with the traditional process, the drilling auxiliary device for drilling and blasting construction can accelerate the marking efficiency, avoid the influence caused by manual operation errors and simple tools, ensure the overall efficiency of drilling construction and improve the success rate of subsequent blasting operation.

Description

Technical Field

[0001] This application belongs to the field of borehole inspection technology, specifically relating to a borehole auxiliary device for borehole drilling and blasting construction. Background Technology

[0002] Drill-and-blast method (DBM) is an underground engineering excavation method that uses drilling and explosives to break up rock masses. It is mainly used in tunnel and mine construction. The typical process of DBM includes: hole layout, drilling, charging explosives, and blasting. After drilling is completed, the spacing between each hole must be checked to ensure the blasting effect and construction safety.

[0003] In the existing technology, the traditional method of drilling involves the operator holding a drawing with dimensional requirements (usually a coordinate system, with dots marked at the drilling positions), measuring with tools such as a tape measure, and marking with a marker pen.

[0004] The inventors discovered that the existing hole-laying process is inefficient due to the simplicity of the tools used. In particular, for more complex hole-laying requirements, errors can occur due to improper operation, affecting subsequent drilling operations. Utility Model Content

[0005] This application provides a drilling auxiliary device for drill-and-blast construction, which aims to improve hole layout efficiency, reduce the error rate of hole layout, and improve drilling accuracy, so as to ensure the reliability of drill-and-blast construction.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A drilling auxiliary device for drill-and-blast method construction is provided, comprising:

[0008] A base; the upper side of the base has a lifting platform, and the lifting platform and the base have an adjustable distance structure;

[0009] A positioning frame, disposed on the lifting platform and adapted to swing relative to the lifting platform so that the side of the positioning frame is parallel to the construction surface; and

[0010] The alignment component is disposed within the positioning frame and has the freedom to move along the length and width directions of the positioning frame; a laser pointer is provided on the alignment component, which is used to emit light along the thickness direction of the positioning frame to form an indicator point falling on the construction surface.

[0011] In one possible implementation, the alignment element includes:

[0012] A slide table is slidably disposed inside the positioning frame along the length direction of the positioning frame; and

[0013] The slider is slidably disposed on the outer side of the slide table along the width direction of the positioning frame;

[0014] The laser pointer is mounted on the slider, and the emitting end of the laser pointer is positioned away from the slider.

[0015] In one possible implementation, a first transmission screw is rotatably provided inside the positioning frame; the axial direction of the first transmission screw is parallel to the length direction of the positioning frame, and the slide has a first transmission nut that is fixedly connected to the first transmission screw and threadedly connected to it.

[0016] In one possible implementation, a second transmission screw is rotatably provided on the outer side of the slide; the axial direction of the second transmission screw is parallel to the width direction of the positioning frame, and the slider has a second transmission nut that is fixedly connected to it and also threadedly connected to the second transmission screw;

[0017] The second transmission screw is connected to a first rotary motor, which drives the second transmission screw to rotate, so that the slider moves relative to the slide table.

[0018] In one possible implementation, the adjustment structure includes:

[0019] Two swing arms are arranged in a cross configuration between the base and the lifting platform; the two swing arms are hinged at their intersection, with the hinge axis parallel to the horizontal plane; the ends of the two swing arms on the same side are respectively hinged to the base and the lifting platform, and each swing end of the two swing arms is hinged to a hinge seat, with the two hinge seats slidably connected to the base and the lifting platform respectively; and

[0020] A linear cylinder is mounted on the base or the lifting platform, and the power output end of the linear cylinder is connected to one of the hinge seats to drive the hinge seats to move.

[0021] In one possible implementation, the positioning frame has a connecting shaft extending along its width direction, the connecting shaft passing through the lifting platform and extending outward, so that the positioning frame swings relative to the lifting platform;

[0022] The extended end of the connecting shaft is coaxially connected to an adjusting gear, and the outer side of the lifting platform has a rotation drive component that is connected to the adjusting gear in a transmission manner.

[0023] In one possible implementation, the rotation drive component includes:

[0024] A rack is slidably disposed on the outer side of the lifting platform and meshes with the adjusting gear; a third transmission nut is disposed on the rack, the axial direction of the third transmission nut being parallel to the sliding direction of the rack; and

[0025] The third transmission screw is rotatably mounted on the outside of the lifting platform and threadedly connected to the third transmission nut; the third transmission screw is driven by a second rotating motor, which drives the third transmission screw to rotate so that the rack moves synchronously.

[0026] In one possible implementation, the lifting platform is covered with a protective shell, and the adjusting gear and the rotation drive component are located inside the protective shell.

[0027] In one possible implementation, the lifting platform has multiple clamps for fixing drawings, and each clamp is located on the side of the positioning frame facing away from the construction surface.

[0028] In one possible implementation, the base has rollers for rolling on the ground.

[0029] The beneficial effects of the drilling auxiliary device for drill-and-blast construction provided in this embodiment are as follows: by moving the base to one side of the construction surface for drill-and-blast construction, the operator can accurately indicate the hole locations on the drawings using a laser pointer. Specifically, the operator first adjusts the lifting platform to the required height using the adjustable structure, and then controls the swing of the positioning frame to make the outer side of the positioning frame parallel to the construction surface. Based on this, by adjusting the movement of the alignment component, the landing position of the indicated point projected by the laser pointer can be changed, and this change matches the coordinate system on the traditional layout construction drawings, making it easier for manual control.

[0030] After accurately marking the construction surface with a laser pointer, workers can either manually mark the location or directly drill holes.

[0031] Compared with existing technologies, operators do not need to manually control simple tools, and the traditional construction steps of first laying out holes and then drilling are eliminated, which significantly improves the overall efficiency of hole laying and drilling. At the same time, the simplified operation steps can reduce the error rate of human operation and improve the success rate of blasting operations in the subsequent process. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A front view of the drilling auxiliary device provided in the embodiments of this application;

[0034] Figure 2 for Figure 1 A magnified view of a portion of the upper circle at point A;

[0035] Figure 3 This is a three-dimensional structural diagram of the drilling auxiliary device provided in the embodiments of this application;

[0036] Figure 4 for Figure 3 A magnified view of a portion of the upper circle at point B;

[0037] Figure 5 This is an exploded view of the base used in the embodiments of this application;

[0038] Figure 6 This is a partial schematic diagram of the lifting platform and adjusting structure used in the embodiments of this application in a combined state;

[0039] Figure 7 This is a three-dimensional structural diagram of the adjustment structure used in the embodiments of this application;

[0040] Figure 8 This is a partial schematic diagram of the positioning frame and protective shell used in the embodiments of this application from an explosion perspective;

[0041] Figure 9 This is a three-dimensional structural diagram of the rotation drive component used in the embodiments of this application;

[0042] Figure 10 This is a three-dimensional structural diagram of the positioning frame used in the embodiments of this application;

[0043] Figure 11 This is a three-dimensional structural diagram of the alignment member used in the embodiments of this application;

[0044] Figure 12 This is a three-dimensional structural diagram of the slider and laser pointer used in the embodiments of this application from an explosion perspective;

[0045] Explanation of reference numerals in the attached drawings: 1. Base; 11. Support arm; 12. Sinking groove; 13. Cover; 131. Strip hole; 2. Lifting platform; 21. Slot; 3. Positioning frame; 31. First transmission screw; 32. Guide rod; 33. Second transmission screw; 34. Connecting shaft; 341. Adjusting gear; 4. Alignment component; 41. Slide table; 411. First transmission nut; 42. Slider; 421. Second transmission nut; 422. First rotary motor; 5. Adjustment structure; 51. Swing arm; 511. Hinge seat; 52. Linear cylinder; 6. Rotation drive component; 61. Rack; 611. Third transmission nut; 62. Third transmission screw; 621. Second rotary motor; 7. Protective shell; 8. Clamp; 9. Roller; 10. Laser indicator. Detailed Implementation

[0046] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0047] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0048] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] Please refer to the following: Figures 1 to 12 The drilling auxiliary device for drilling and blasting construction provided in this application will now be described. The drilling auxiliary device for drilling and blasting construction proposed in this application includes a base 1, a positioning frame 3, and an alignment component 4.

[0051] The base 1 has a rectangular cross-section and is used to move along the ground to one side of the construction surface.

[0052] The base 1 has a lifting platform 2 on its upper side. The lifting platform 2 is slidably connected to the base 1 in the vertical direction, and there is an adjustment structure 5 between the lifting platform 2 and the base 1 for adjusting the vertical distance between them.

[0053] The positioning frame 3 is set on the lifting platform 2 and is adapted to swing relative to the lifting platform 2 so that the side of the positioning frame 3 is parallel to the construction surface. It should be noted that the device also includes a structure for locking the positioning frame 3 to prevent the positioning frame 3 from swinging under non-human force.

[0054] The alignment member 4 is set inside the positioning frame 3 and has the freedom to move along the length and width directions of the positioning frame 3; and during this movement, the alignment member 4 will not separate from the positioning frame 3, thus ensuring the structural stability of the device.

[0055] A laser pointer 10 is provided on the alignment member 4. The laser pointer 10 is used to emit light along the thickness direction of the positioning frame 3 to form an indicator point falling on the construction surface.

[0056] The beneficial effect of the drilling auxiliary device for drilling and blasting construction provided in this embodiment is that by moving the base 1 to one side of the construction surface of the drilling and blasting method, the operator can accurately indicate the hole positions on the drawing through the laser pointer 10. Specifically, the operator first adjusts the lifting platform 2 to the required height through the adjusting structure 5, and then controls the positioning frame 3 to swing so that the outer side of the positioning frame 3 is parallel to the construction surface. On this basis, by adjusting the movement of the alignment component 4, the landing position of the indicated point projected by the laser pointer 10 can be changed, and this change matches the coordinate system on the traditional layout construction drawing, making it easier for manual control.

[0057] After the construction surface is accurately marked by the laser pointer 10, the workers can manually mark the location or directly drill holes.

[0058] Compared with existing technologies, operators do not need to manually control simple tools, and the traditional construction steps of first laying out holes and then drilling are eliminated, which significantly improves the overall efficiency of hole laying and drilling. At the same time, the simplified operation steps can reduce the error rate of human operation and improve the success rate of blasting operations in the subsequent process.

[0059] In some embodiments, such as Figure 1 and Figure 2 As shown, the alignment member 4 includes a slide 41 and a slider 42.

[0060] The slide table 41 is slidably disposed inside the positioning frame 3 along the length direction of the positioning frame 3. Specifically, the slide table 41 adopts a strip structure extending in the horizontal direction. Both ends of the strip structure facing the width direction of the positioning frame 3 are connected to the inner wall of the positioning frame 3, so that the slide table 41 loses the freedom to move along the width direction of the positioning frame 3, thereby preventing loosening.

[0061] The slider 42 is slidably disposed on the outer side of the slide table 41 along the width direction of the positioning frame 3; it should be noted that the outer side refers to the side of the slide table 41 facing the construction surface, which is usually also referred to as the front side.

[0062] The laser pointer 10 is mounted on the slider 42, specifically on the front end face of the slider 42. The emitting end of the laser pointer 10 is positioned away from the slide table 41, thereby projecting a laser beam forward to form an indicator point on the construction surface.

[0063] In some embodiments, such as Figure 3 and Figure 11 As shown, a first transmission screw 31 is rotatably provided inside the positioning frame 3; the axial direction of the first transmission screw 31 is parallel to the length direction of the positioning frame 3, and the slide table 41 has a first transmission nut 411 that is fixedly connected to it and threadedly connected to the first transmission screw 31.

[0064] By adopting the above technical solution, the position of the slide table 41 can be precisely adjusted by manually controlling the rotation of the first transmission screw 31.

[0065] It should be noted that, in order to achieve precise control of the position of the slide 41, a first infrared rangefinder (not shown in the figure) is also provided inside the positioning frame 3 for monitoring the distance between the slide 41 and its initial position.

[0066] To facilitate the control of the first transmission screw 31, such as Figure 10 As shown, the upper end of the first transmission screw 31 passes through the positioning frame 3 and extends out, and the extended end has a handle for the operator to grip.

[0067] To achieve the sliding connection between the slide table 41 and the positioning frame 3, and to ensure the stability of the slide table 41's movement, in this embodiment, as follows: Figure 3 As shown, a guide rod 32 is fixedly installed inside the positioning frame 3; the axial direction of the guide rod 32 is parallel to the length direction of the positioning frame 3, and the guide rod 32 is slidably connected to the slide table 41.

[0068] Furthermore, the guide rod 32 and the first transmission screw 31 are located on both sides inside the positioning frame 3 to improve the stability of the sliding process of the slide table 41.

[0069] In some embodiments, such as Figure 1 , Figure 2 and Figure 11 As shown, a second transmission screw 33 is rotatably provided on the outer side of the slide table 41; the axial direction of the second transmission screw 33 is parallel to the width direction of the positioning frame 3, and the slider 42 has a second transmission nut 421 that is fixedly connected to it and threadedly connected to the second transmission screw 33.

[0070] By adopting the above technical solution, the position of the slider 42 can be precisely adjusted by controlling the rotation of the second transmission screw 33; and the second transmission screw 33 is connected to a first rotary motor 422, which drives the second transmission screw 33 to rotate so that the slider 42 moves relative to the slide table 41. By adjusting the parameters when the first rotary motor 422 is started, the moving distance of the slider 42 can be precisely controlled.

[0071] The reasons for automating the control of slider 42 and manually controlling slide table 41 are threefold: First, the positional changes of slide table 41 can be displayed more intuitively, for example, by drawing a vertical line on the construction surface or a vertically extending scale line on the positioning frame 3; second, most hole placement involves first finding a horizontal line and then locating the specific landing point, which aligns with conventional manual operation; third, holes are usually arranged more densely along the horizontal direction and more loosely along the vertical direction, so automating the control of slider 42 can more intuitively improve operational efficiency. These three points, combined with cost considerations in traditional industrial design, ultimately result in an actual structure where slider 42 is automatically controlled and slide table 41 is manually controlled.

[0072] It should be noted that, in order to achieve precise control of the position of slider 42, a second infrared rangefinder (not shown in the figure) is also provided on the outer side of the slide table 41 for monitoring the distance between slider 42 and its initial position.

[0073] In some embodiments, such as Figures 5 to 7 As shown, the adjustable distance structure 5 includes two swing arms 51 and a linear cylinder 52.

[0074] Both swing arms 51 are located between the base 1 and the lifting platform 2, and are arranged in a cross configuration to form four endpoints relative to the construction surface: upper left, upper right, lower left, and lower right.

[0075] The two swing arms 51 are hinged at their intersection. The hinge axis is parallel to the horizontal plane and perpendicular to the construction surface, so as to form an arrangement in which the upper left and lower left ends are on the same vertical plane, the upper left and upper right ends are on the same horizontal plane, the upper right and lower right ends are on the same vertical plane, and the lower left and lower right ends are on the same horizontal plane.

[0076] The ends of the two swing arms 51 located on the same side are hinged to the base 1 and the lifting platform 2, respectively. Specifically, in this embodiment, combined with... Figure 3 and Figure 6 As shown, the lower right end of the cross structure is hinged to the base 1, and the upper right end of the cross structure is hinged to the lifting platform 2.

[0077] The swing ends of the two swing arms 51 (i.e. the upper left and lower left ends of the cross structure) are both hinged with hinge seats 511; the two hinge seats 511 are slidably connected to the base 1 and the lifting platform 2 respectively, and their sliding directions are parallel to each other, and they are both set facing or away from the ends of the corresponding cross structure on the same horizontal plane.

[0078] A linear cylinder 52 is mounted on the base 1 or the lifting platform 2; in this embodiment, the linear cylinder 52 is fixed to the base 1. The power output axis of the linear cylinder 52 is parallel to the sliding direction of the hinge seat 511, and the power output end is connected to one of the hinge seats 511 to facilitate the movement of the hinge seat 511.

[0079] In this embodiment, the aforementioned cross structure has two sets, which are arranged side by side in the horizontal direction, and the two hinge seats 511 that cooperate with the linear cylinder 52 are on the same horizontal plane; in order to reduce the use of the linear cylinder 52 and reduce the cost of device production, there is only one linear cylinder 52, and the linear cylinder 52 is connected to the two hinge seats 511 through a connecting rod.

[0080] To achieve a sliding connection between the lifting platform 2 and the base 1, and to ensure the stability of the lifting platform 2 relative to the horizontal plane when participating in the lifting process, in this embodiment, as follows: Figure 5 and Figure 6 As shown, the lower side of the lifting platform 2 has a slot 21, and the base 1 has a support arm 11 that is inserted into the slot 21.

[0081] In order to improve the performance of this embodiment, such as Figure 3 and Figure 5 As shown, a recessed groove 12 is provided on the upper side of the base 1, and the lower part of the adjustable structure 5 is located in the recessed groove 12. In order to avoid the influence of dust, the opening of the recessed groove 12 has a cover 13, and the cover 13 has a strip hole 131 through which the swing arm 51 can pass.

[0082] In some embodiments, such as Figure 1 and Figure 10 As shown, the positioning frame 3 has a connecting shaft 34 extending along its width direction. The connecting shaft 34 passes through the lifting platform 2 and extends out to realize the swingable connection between the positioning frame 3 and the lifting platform 2, so that the positioning frame 3 can swing relative to the lifting platform 2.

[0083] The extended end of the connecting shaft 34 is coaxially connected to an adjusting gear 341, and the outer side of the lifting platform 2 has a rotating drive component 6 that is connected to the adjusting gear 341 for transmission.

[0084] By rotating the drive component 6, the adjusting gear 341 can be driven to rotate, thereby controlling the swing angle of the lifting platform 2 and improving the precision of the device during use.

[0085] In some embodiments, such as Figures 8 to 10 As shown, the rotation drive component 6 includes a rack 61 and a third transmission screw 62.

[0086] The rack 61 is slidably disposed on the outer side of the lifting platform 2 and meshes with the adjusting gear 341, so that when it moves along the tangential direction of the adjusting gear 341 while maintaining the meshing relationship with the adjusting gear 341, the adjusting gear 341 can drive the positioning frame 3 to swing synchronously through the connecting shaft 34.

[0087] A third transmission nut 611 is provided on the rack 61. Specifically, the third transmission nut 611 is located on the side of the rack 61 facing away from the adjusting gear 341, and the axial direction of the third transmission nut 611 is parallel to the sliding direction of the rack 61.

[0088] The third transmission screw 62 is rotatably mounted on the outside of the lifting platform 2 and is threadedly connected to the third transmission nut 611 so that the rack 61 moves synchronously when the third transmission screw 62 rotates.

[0089] A second rotary motor 621 is connected to the third transmission screw 62. The second rotary motor 621 is used to drive the third transmission screw 62 to rotate, so as to achieve the technical purpose of moving the rack 61.

[0090] It should be noted that the second rotary motor 621 itself has a self-locking function. That is, when the second rotary motor 621 is idle (not started), the power output shaft of the second rotary motor 621 will not rotate, thereby locking the rack 61 in the corresponding position, so that the connecting shaft 34 will not rotate and the positioning frame 3 will not swing, thus achieving the aforementioned technical purpose of locking the positioning frame 3.

[0091] In some embodiments, such as Figure 8 As shown, the lifting platform 2 is covered with a protective shell 7. The adjusting gear 341 and the rotation drive component 6 are both located inside the protective shell 7 to prevent external dust from falling in, so that this device can be applied to dusty environments during drilling operations.

[0092] In some embodiments, such as Figure 3 and Figure 4As shown, the lifting platform 2 has multiple clamps 8 for fixing drawings, and each clamp 8 is located on the side of the positioning frame 3 facing away from the construction surface. In this embodiment, there are four clamps 8, all located on the rear side of the positioning frame 3, and distributed in two groups on the inner walls of the left and right sides of the positioning frame 3. Each group of clamps 8 includes two clamps 8 distributed in the vertical direction. The four clamps 8 work together to hold the drawings on the rear side of the positioning frame 3 for easy observation.

[0093] It should be noted that, in this embodiment, since the clamp 8 and the positioning frame 3 have a certain distance in the front-to-back direction, fixing the drawing to the clamp 8 will not affect the swing of the positioning frame 3 relative to the lifting platform 2.

[0094] In some embodiments, such as Figure 1 , Figure 3 and Figure 5 As shown, the base 1 has four rollers 9, which are located at the four corners of the rectangle formed by the cross-section of the base 1.

[0095] When the base 1 is on the ground, the roller 9 is used to contact the ground and roll on the ground so that the base 1 can be pushed manually.

[0096] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A drilling auxiliary device for drill-and-blast method construction, characterized in that, include: Base; The base has a lifting platform on its upper side, and there is an adjustable distance structure between the lifting platform and the base; A positioning frame is provided on the lifting platform and is adapted to swing relative to the lifting platform so that the side of the positioning frame is parallel to the construction surface; as well as The alignment component is disposed within the positioning frame and has the freedom to move along the length and width directions of the positioning frame; a laser pointer is provided on the alignment component, which is used to emit light along the thickness direction of the positioning frame to form an indicator point falling on the construction surface.

2. The drilling auxiliary device for drill-and-blast construction as described in claim 1, characterized in that, The alignment member includes: A slide table is slidably disposed inside the positioning frame along the length direction of the positioning frame; and The slider is slidably disposed on the outer side of the slide table along the width direction of the positioning frame; The laser pointer is mounted on the slider, and the emitting end of the laser pointer is positioned away from the slider.

3. The drilling auxiliary device for drill-and-blast construction as described in claim 2, characterized in that, A first transmission screw is rotatably provided inside the positioning frame; the axial direction of the first transmission screw is parallel to the length direction of the positioning frame, and a first transmission nut is fixedly connected to the slide and threadedly connected to the first transmission screw.

4. The drilling auxiliary device for drill-and-blast construction as described in claim 2, characterized in that, The outer side of the slide is rotatably provided with a second transmission screw; the axial direction of the second transmission screw is parallel to the width direction of the positioning frame, and the slider has a second transmission nut that is fixedly connected to it and also threadedly connected to the second transmission screw; The second transmission screw is connected to a first rotary motor, which drives the second transmission screw to rotate, so that the slider moves relative to the slide table.

5. The drilling auxiliary device for drill-and-blast construction as described in claim 1, characterized in that, The adjustment structure includes: Two swing arms are arranged in a cross configuration between the base and the lifting platform; the two swing arms are hinged at their intersection, with the hinge axis parallel to the horizontal plane; the ends of the two swing arms on the same side are respectively hinged to the base and the lifting platform, and each swing end of the two swing arms is hinged to a hinge seat, with the two hinge seats slidably connected to the base and the lifting platform respectively; and A linear cylinder is mounted on the base or the lifting platform, and the power output end of the linear cylinder is connected to one of the hinge seats to drive the hinge seats to move.

6. The drilling auxiliary device for drill-and-blast construction as described in claim 1, characterized in that, The positioning frame has a connecting shaft extending along its width direction, the connecting shaft passing through the lifting platform and extending out, so that the positioning frame swings relative to the lifting platform; The extended end of the connecting shaft is coaxially connected to an adjusting gear, and the outer side of the lifting platform has a rotation drive component that is connected to the adjusting gear in a transmission manner.

7. The drilling auxiliary device for drill-and-blast construction as described in claim 6, characterized in that, The rotation drive component includes: A rack is slidably disposed on the outer side of the lifting platform and meshes with the adjusting gear; a third transmission nut is disposed on the rack, the axial direction of the third transmission nut being parallel to the sliding direction of the rack; and The third transmission screw is rotatably mounted on the outside of the lifting platform and threadedly connected to the third transmission nut; the third transmission screw is driven by a second rotating motor, which drives the third transmission screw to rotate so that the rack moves synchronously.

8. The drilling auxiliary device for drill-and-blast construction as described in claim 6 or 7, characterized in that, The lifting platform is covered by a protective shell, and the adjusting gear and the rotation drive component are located inside the protective shell.

9. The drilling auxiliary device for drill-and-blast construction as described in claim 1, characterized in that, The lifting platform has multiple clamps for fixing drawings, and each clamp is located on the side of the positioning frame facing away from the construction surface.

10. The drilling auxiliary device for drill-and-blast construction as described in claim 1, characterized in that, The base has wheels for rolling on the ground.

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