A device for measuring soil erosion in windy and sandy areas

Abstract

The application discloses a soil erosion measuring device for windy and sandy areas and relates to the technical field of soil erosion monitoring equipment, which comprises a steel drill body, a fixing seat arranged at the top of the steel drill body and a cone arranged at the bottom end of the steel drill body. The cone comprises three cone tips which are uniformly arranged at the bottom of the steel drill body in the circumferential direction and are rotationally connected with the bottom of the steel drill body. The steel drill body can be quickly installed through the cooperation of the transmission assembly and the insertion cone. When the insertion cone is extended, the three cone tips can be pushed to be unfolded, so that the resistance between the steel drill body and the sandy soil is improved, the grip of the steel drill body is improved, the steel drill body is tightly clamped with the sandy soil to prevent the steel drill body from loosening, the stability of the whole is improved, the scale line on the moving display plate can be freely adjusted and controlled according to the soil quality and the different insertion depths of the measuring drill, the initial point position can be freely set, and the subsequent monitoring and recording data are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water and soil loss monitoring equipment, and particularly relates to a water and soil loss measuring rod device for a windy and sandy area. BACKGROUND

[0002] Water and soil loss refers to the destruction and loss of water and soil resources and land productivity under the action of natural stresses such as water force, wind force, gravity and freeze-thaw, and human activities, including land surface erosion and water loss. When monitoring water and soil loss, the measuring rod method is usually used, which is mainly used for monitoring water and soil loss in the whole process before, during and after the construction of a development and construction project, and is an important basis for scientific evaluation of water and soil loss and prevention and treatment effect and completion acceptance of water and soil conservation facilities. The measuring rod method is widely used in monitoring the intensity of wind and water erosion, which refers to inserting a plurality of thin rods into the ground in a regular manner under the condition that the surface soil is disturbed as little as possible in the slope sample plot, marking the position of the original height point on the rod which is level with the surface layer of the soil. According to the design monitoring frequency, the thickness change of the surface erosion is observed regularly, and then the soil erosion amount is calculated. The measuring rod is usually 50-100 cm long and 1-2 cm in diameter, and the rod is marked with a scale. The measuring rod is perpendicular to the slope or vertically inserted into the slope, and the rod cap end is exposed by a certain size distance, the initial slope height is recorded, and the new height of the slope is observed after rainfall or at intervals, and the difference between the initial slope height and the new height of the slope is the soil erosion thickness. The soil erosion amount is calculated to evaluate the regional soil erosion condition.

[0003] The windy and sandy area is characterized by a significant desert climate, a harsh geological environment, loose soil and insufficient vegetation coverage. These factors jointly cause frequent wind and sand activities. Wind and sand not only cause damage to the local ecological environment, but also may have an impact on the surrounding areas, such as sandstorms and other natural disasters. The wind erosion in the windy and sandy area changes the surface morphology and aggravates soil loss, which has a potential impact on agriculture, construction and other human activities. Therefore, the measuring rod can be used to monitor the influence of wind erosion on soil erosion, evaluate the effect of wind and sand prevention and treatment measures, and provide a scientific basis for related researches such as water and soil conservation and environmental protection.

[0004] However, the rod exploration in the windy and sandy area also faces some challenges. The strong wind and frequent wind and sand activities make it difficult to insert the steel rod into the loose sand, which is a great challenge to the development of water and soil loss monitoring work. At the same time, the dry climate and extremely harsh environment can wear off the scale on the surface of the traditional steel rod, affecting the accuracy of subsequent measurement. SUMMARY

[0005] The purpose of the present application is to provide a water and soil loss measuring rod device for a windy and sandy area to solve the above problems.

[0006] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0007] The device comprises a steel drill main body, a fixed seat arranged at the top of the steel drill main body, a cone arranged at the bottom end of the steel drill main body, three cone tips arranged uniformly along the circumferential direction at the bottom of the steel drill main body and rotatably connected with the bottom of the steel drill main body, an active cavity, a guide groove and a containing cavity sequentially arranged inside the steel drill main body from top to bottom, a screw rod arranged inside the active cavity, the screw rod rotatably arranged inside the active cavity and extending to the inside of the fixed seat through the steel drill main body, the screw rod extending to the inside of the guide groove, an active cylinder sleeved on the bottom of the screw rod and threadedly connected with the screw rod through internal threads, the active cylinder outer wall slidably connected with the guide groove, a cutting cone fixedly connected with the bottom of the active cylinder and arranged inside the containing cavity, and a measuring mechanism for setting an initial point and an auxiliary positioning mechanism for reinforcing the fixation of the steel drill main body arranged on the outer wall of the steel drill main body.

[0008] When the screw rod rotates, the cutting cone can be driven to extend out of the active cavity to the outside of the steel drill main body, and when the cutting cone extends out of the containing cavity, the three cone tips can be expanded.

[0009] As a preferred scheme of the present application, the measuring mechanism comprises a moving plate, two lead screws and a rotating assembly for driving the two lead screws to rotate, a placing groove is arranged on the outer wall of the steel drill main body, the two lead screws are rotatably arranged in the placing groove and extend to the inside of the fixed seat through the steel drill main body, the moving plate is movably sleeved on the two lead screws and threadedly connected with the two lead screws, the rotating assembly is installed in the inside of the fixed seat and drivingly connected with the two lead screws, a recess is arranged on one side of the moving plate, a display plate is hingedly connected to the recess, an LED light bar is installed in the recess, a light uniforming sheet is arranged on the side of the outer wall of the display plate facing the LED light bar, and a scale line is arranged on the side of the display plate away from the light uniforming sheet.

[0010] As a preferred scheme of the present application, an explosion-proof glass plate is further fixedly arranged in the recess and connected with the outer wall of the steel drill main body.

[0011] As a preferred scheme of the present application, a partition plate is fixedly connected in the inside of the fixed seat, the fixed seat is divided into a first cavity and a second cavity by the partition plate, a power box and a display are arranged in the first cavity, an arc-shaped fixed plate is fixedly connected to one side of the top of the fixed seat, a cover plate is hingedly connected to one side of the arc-shaped fixed plate, the arc-shaped fixed plate and the cover plate are adapted to the first cavity, and the arc-shaped fixed plate and the cover plate are arranged above the power box and the display respectively.

[0012] As a preferred scheme of the present application, the second cavity is internally provided with a transmission assembly for driving the rotation of the screw rod, the transmission assembly comprises a driving gear, a driven gear and a handle, the driving gear is fixed at the top end of the screw rod, the driven gear is rotatably arranged inside the fixed seat, and the driven gear is engaged with the driving gear, the handle is fixed at the top of the driven gear, and the handle extends to the outside of the fixed seat after penetrating the partition plate and the arc-shaped fixed plate.

[0013] As a preferred scheme of the present application, the rotation assembly is installed on the side of the second cavity away from the transmission assembly, both top ends of the two screw rods are rotatably connected with the bottom of the partition plate, the rotation assembly is drivingly connected with the two screw rods, a knob is rotatably arranged on the inner bottom wall of the fixed seat, the knob extends to the outside of the fixed seat after penetrating the partition plate and the arc-shaped fixed plate, and the rotation assembly is drivingly connected with the knob.

[0014] As a preferred scheme of the present application, the auxiliary positioning mechanism comprises a plurality of auxiliary positioning rods which are uniformly arranged on the outer wall of the steel drill main body in the circumferential direction, the auxiliary positioning rod comprises a connecting piece, a hinged rod, a sleeve ring and a positioning rod, the connecting piece is fixed on the outer wall of the steel drill main body, the hinged rod is hinged on one side of the connecting piece, the sleeve ring is hingedly arranged on the end of the hinged rod away from the connecting piece, and the positioning rod is movably inserted into the sleeve ring.

[0015] As a preferred scheme of the present application, the inner wall of the positioning rod is provided with a sliding groove on both sides, the inner wall of the sleeve ring is fixedly connected with a protrusion matched with the two sliding grooves, and the protrusion is slidingly connected with the sliding groove.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. The present application can quickly install the steel drill main body through the cooperation of the transmission assembly and the cutting cone, and when the cutting cone is extended, the three cone tips are expanded, thereby improving the resistance between the steel drill main body and the sand, improving the grip of the steel drill main body, tightly clamping the steel drill main body with the sand to prevent the steel drill main body from loosening, and improving the overall stability.

[0018] 2. The present application cooperates the rotation assembly with the measuring mechanism, which is convenient for freely adjusting the scale line on the moving display plate according to the soil condition and the different insertion depths of the measuring rod, freely setting the initial point, facilitating subsequent monitoring and recording data, solving the problem that the steel drill structure of the measuring rod device in the prior art is relatively simple, the operation is troublesome when measuring data on site, the scale position on the steel drill is fixed and inconvenient to adjust the height, and it is difficult to adapt to the measurement of different hardness of the soil.

[0019] 3. In the present application, the mobile plate is internally provided with an LED light bar, so that the position of the scale line can be clearly seen even in a dim environment. The explosion-proof glass plate is arranged to protect the internal scale line from external extreme temperature changes and frequent wind and sand erosion and abrasion, thereby enhancing the accuracy of the measurement data. In addition, through the cooperation of the measuring mechanism and the display, the data can be recorded and saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0021] Figure 1 A perspective view of a soil and water loss measuring device for a windy and sandy area is provided for the embodiment of the present application;

[0022] Figure 2 A front view structural section view of the steel drill body is provided for the embodiment of the present application;

[0023] Figure 3 A connection structure schematic diagram of the cone and the screw rod is provided for the embodiment of the present application;

[0024] Figure 4 A structural schematic diagram of the transmission assembly is provided for the embodiment of the present application;

[0025] Figure 5 A plan view of the measuring mechanism is provided for the embodiment of the present application;

[0026] Figure 6 An enlarged view of the structure at A of the present application is provided for the embodiment of the present application; Figure 5

[0027] Figure 7 A local structural schematic diagram of the measuring mechanism is provided for the embodiment of the present application;

[0028] Figure 8 A structural schematic diagram of the auxiliary positioning mechanism is provided for the embodiment of the present application;

[0029] Figure 9 An expanded structural schematic diagram of the three cone tips is provided for the embodiment of the present application.

[0030] The numbers in the drawings represent the following: 1, steel drill body; 2, fixed seat; 3, cone; 4, cone tip; 5, movable cavity; 6, guide groove; 7, containing cavity; 8, screw rod; 11, movable cylinder; 12, cutting cone; 13, measuring mechanism; 14, auxiliary positioning mechanism; ​

[0031] 21, partition plate; 22, first cavity; 23, second cavity; 24, power box; 25, display; 26, arc-shaped fixing plate; 27, cover plate; 231, transmission assembly; 232, driving gear; 233, driven gear; 234, handle; 131, moving plate; 132, screw rod; 133, rotating assembly; 134, placing groove; 135, groove; 136, display plate; 137, LED light bar; 138, light uniforming sheet; 139, explosion-proof glass plate; 140, knob; 141, connecting piece; 142, hinged rod; 143, collar; 144, positioning rod; 145, sliding groove; 146, protrusion. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] As shown in the drawings, Figures 1 to 9 The present application provides a soil erosion measuring device for windy and sandy areas, which comprises a steel drill main body 1, a fixed seat 2 arranged at the top of the steel drill main body 1, a cone body 3 arranged at the bottom end of the steel drill main body 1, the cone body 3 comprising three cone tips 4 arranged uniformly along the circumferential direction at the bottom of the steel drill main body 1, and all the cone tips 4 being rotationally connected with the bottom of the steel drill main body 1, an active cavity 5, a guide groove 6 and a containing cavity 7 sequentially arranged from top to bottom inside the steel drill main body 1, a screw rod 8 arranged inside the active cavity 5, the screw rod 8 being rotationally arranged inside the active cavity 5 and extending to the inside of the fixed seat 2 through the steel drill main body 1 at the top end, the screw rod 8 extending to the inside of the guide groove 6 at the bottom, an active cylinder 11 sleeved on the bottom of the screw rod 8, the inner wall of the active cylinder 11 being threadedly connected with the screw rod 8, the outer wall of the active cylinder 11 being slidably connected with the guide groove 6, a cutting cone 12 fixedly connected with the bottom of the active cylinder 11, the cutting cone 12 being located inside the containing cavity 7, a measuring mechanism 13 for setting an initial point arranged on the outer wall of the steel drill main body 1, and an auxiliary positioning mechanism 14 for reinforcing the fixation of the steel drill main body 1.

[0034] The end face of the three cone tips 4 close to the steel drill main body 1 is connected with the opening of the containing cavity 7, and the screw rod 8 can drive the cutting cone 12 to extend out of the active cavity 5 to the outside of the steel drill main body 1 when rotating; when the cutting cone 12 extends out of the containing cavity 7, it can abut on the end face and push the three cone tips 4 to expand.

[0035] The fixed seat 2 is internally fixedly connected with a partition plate 21, the partition plate 21 divides the fixed seat 2 into a first cavity 22 and a second cavity 23, the first cavity 22 is provided with a power box 24 and a display 25, one side of the top of the fixed seat 2 is fixedly connected with an arc-shaped fixed plate 26, one side of the arc-shaped fixed plate 26 is hingedly connected with a cover plate 27, the arc-shaped fixed plate 26 and the cover plate 27 are both matched with the first cavity 22, and the arc-shaped fixed plate 26 and the cover plate 27 are respectively located above the power box 24 and the display 25.

[0036] The second cavity 23 is internally provided with a transmission assembly 231 for driving the rotation of the screw rod 8, the transmission assembly 231 comprises a driving gear 232, a driven gear 233 and a handle 234, the driving gear 232 is fixed at the top end of the screw rod 8, the driven gear 233 is rotationally arranged inside the fixed seat 2, and the driven gear 233 is engaged with the driving gear 232, the handle 234 is fixed at the top of the driven gear 233, and the handle 234 extends to the outside of the fixed seat 2 after penetrating the partition plate 21 and the arc-shaped fixed plate 26 in sequence.

[0037] In use, first, the steel drill main body 1 is inserted from the sand slope, then, the worker holds the handle 234 and rotates the handle 234, the rotation of the handle 234 drives the rotation of the driven gear 233 connected therewith, the rotation of the driven gear 233 drives the rotation of the driving gear 232 engaged therewith, thereby driving the screw rod 8 to rotate, when the screw rod 8 rotates, it can drive the movable cylinder 11 to move axially along the guide groove 6 to the containing cavity 7, when the movable cylinder 11 moves, it can drive the grafting cone 12 at the front end thereof to extend out of the containing cavity 7 to the outside of the steel drill main body 1, until the grafting cone 12 is inserted into the sand, thereby completing the preliminary fixation of the steel drill main body 1, and in the process of the grafting cone 12 extending out of the containing cavity 7, when the grafting cone 12 moves to abut against the three tapered tips 4, it can drive the three tapered tips 4 to expand, the three tapered tips 4 are distributed at the outer periphery of the grafting cone 12 after expanding in the sand, thereby playing a role in enhancing the grip ability of the steel drill main body 1, so as to reinforce the steel drill main body 1 twice, and improve the firmness of the steel drill main body 1 in use, in the present application, the cooperation of the transmission assembly 231 and the grafting cone 12 can quickly install the steel drill main body 1, and the cooperation of the grafting cone 12 and the three tapered tips 4 of the cone body 3 during installation can expand the three tapered tips 4, thereby improving the resistance between the steel drill main body 1 and the sand, improving the grip of the steel drill main body 1, making the steel drill main body 1 tightly clamped in the sand, thereby preventing the steel drill main body 1 from loosening, and improving the overall stability.

[0038] It is worth noting that in the present embodiment, the outer wall of the movable cylinder 11 has a protrusion, the axial movement of the movable cylinder 11 is completed through the sliding cooperation of the protrusion and the guide groove 6, which is prior art, therefore, not shown in the legend, and the principle thereof will not be described in detail here.

[0039] Further, since the steel drill body 1 is mainly applied to the sand area, the soil in the sand area is loose, and environmental factors such as temperature, humidity, wind speed or human disturbance in the sand area can affect the stability of the steel drill and the measurement result, therefore, the auxiliary positioning mechanism 14 is arranged on the outer wall of the steel drill body 1 to reinforce the steel drill body 1 for the third time, so as to improve the wind resistance and stability of the steel drill body 1.

[0040] The auxiliary positioning mechanism 14 includes a plurality of auxiliary positioning rods uniformly arranged on the outer wall of the steel drill body 1 in the circumferential direction, the auxiliary positioning rod includes a connecting piece 141, a hinged rod 142, a sleeve ring 143 and a positioning rod 144, the connecting piece 141 is fixed on the outer wall of the steel drill body 1, the hinged rod 142 is hinged on one side of the connecting piece 141, the sleeve ring 143 is hingedly arranged on one end of the hinged rod 142 away from the connecting piece 141, and the positioning rod 144 is movably inserted into the sleeve ring 143.

[0041] The inner wall of the positioning rod 144 is provided with a sliding groove 145 on both sides, the inner wall of the sleeve ring 143 is fixedly connected with a protrusion 146 matched with the two sliding grooves 145, and the protrusion 146 is in sliding connection with the sliding groove 145.

[0042] After the steel drill body 1 is preliminarily positioned, the hinged rod 142 is unfolded to be perpendicular to the steel drill body 1, then the staff hammers the positioning rod 144, the positioning rod 144 moves along the inside of the sleeve ring 143 and is inserted into the sand, after a plurality of positioning rods 144 are inserted into the sand, the auxiliary fixing of the steel drill body 1 is completed, wherein the length of the positioning rod 144 can be adaptively set according to the slope of the sand to ensure the balance of the steel drill body 1, and the positioning rod 144 can be detachably divided into parts to facilitate replacement, further, the side wall of the hinged rod 142 can be provided with a magnetic block to facilitate the hinged rod 142 to be adsorbed on the outer side wall of the steel drill body 1 after being rotated to the vertical state, and to be conveniently stored. The auxiliary positioning mechanism 14 can further improve the stability and wind resistance of the steel drill body 1, avoid the steel drill body 1 from shaking or tilting during use, and compared with the prior art, the positioning rod 144 in the auxiliary positioning mechanism 14 is movably arranged, and the hammering of the hammer only needs to be on the positioning rod 144, without acting on the steel drill body 1, avoiding the problems of bending or damage of the steel drill body 1 when it is hit hard, and avoiding affecting the accuracy of measurement.

[0043] The measuring mechanism 13 comprises a moving plate 131, two lead screws 132 and a rotating assembly 133 for driving the two lead screws 132 to rotate, a placing groove 134 is formed on the outer wall of the steel drill body 1, the two lead screws 132 are both rotationally arranged in the placing groove 134, and the top of each of the two lead screws 132 penetrates through the steel drill body 1 rearward and extends into the fixed seat 2, the moving plate 131 is movably sleeved on the two lead screws 132 and is threadedly connected with the two lead screws 132, the rotating assembly 133 is installed inside the fixed seat 2 and is drivingly connected with the two lead screws 132, a recess 135 is formed on one side of the moving plate 131, a display plate 136 is hingedly connected to the recess 135, an LED light bar 137 is installed in the recess 135, a light uniforming sheet 138 is arranged on the side of the outer wall of the display plate 136 facing the LED light bar 137, and a scale line is arranged on the side of the display plate 136 away from the light uniforming sheet 138.

[0044] An explosion-proof glass plate 139 is also fixedly arranged in the recess 135 and is connected with the outer wall of the steel drill body 1.

[0045] The rotating assembly 133 is installed inside the second cavity 23 on the side away from the transmission assembly 231, the top of each of the two lead screws 132 is rotationally connected with the bottom of the partition plate 21, the rotating assembly 133 is drivingly connected with the two lead screws 132, a knob 140 is rotationally arranged on the inner bottom wall of the fixed seat 2, the knob 140 extends to the outside of the fixed seat 2 after penetrating through the partition plate 21 and the arc-shaped fixed plate 26 in sequence, and the rotating assembly 133 is drivingly connected with the knob 140.

[0046] After the steel drill body 1 is installed, the rotating assembly 133 can be driven to rotate by rotating the knob 140, the two lead screws 132 are driven to rotate by the rotating assembly 133, the moving plate 131 is driven to move up and down in the placing groove 134 by the lead screws 132, so that the height of the scale line on the display plate 136 is adjusted, after the steel drill is fixed, the initial point position on the sand surface is recorded, the initial point position of the scale line is coincided with the sand surface by driving the moving plate 131 to move up or down by the lead screws 132, so that the initial point position data is obtained, the cover plate 27 is opened, and the data is recorded by the display 25, so that the scale line on the display plate 136 is freely adjusted according to the soil quality and the different insertion depths of the measuring drill, the initial point position is freely set, the subsequent monitoring and recording data are facilitated, and the problems that the steel drill structure of the measuring drill device in the prior art is relatively simple, the marks need to be reserved on the steel drill during the on-site measurement, the operation is troublesome, the scale position on the steel drill is fixed and cannot be adjusted in height, and the measuring soil with different hardnesses cannot be adapted are solved.

[0047] The LED light bar 137 is arranged inside the mobile plate 131, so that the position of the scale line can be clearly seen even in a dim environment. The explosion-proof glass plate 139 is arranged to protect the internal scale line from external extreme temperature changes and frequent sand erosion and wear, thereby enhancing the accuracy of the measurement data. Furthermore, through the cooperation of the measuring mechanism 13 and the display 25, the data can be recorded and saved. The display 25 in the embodiment is a prior art, and the display 25 is provided with a key input function. The display 25 can realize recording and analysis of the measurement data. Furthermore, the user can replace the transmission assembly 231 and the rotating assembly 133 with a motor or other device capable of rotating the screw rod 8 and the lead screw 132 in the prior art, so as to realize the functions of automatic positioning and installation of the cone 3 and automatic measurement of the measuring mechanism 13. At this time, the use of the display 25 can realize automatic acquisition, analysis and detection of the measurement data.

[0048] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A device for measuring the erosion of water and soil in windy and sandy areas, comprising a steel probe body (1), characterized in that: The steel drill body (1) top is provided with a fixed seat (2), the steel drill body (1) bottom end is provided with a cone (3), the cone (3) includes three cone tips (4) uniformly arranged at the bottom of the steel drill body (1) in the circumferential direction, and all the cone tips (4) are rotatably connected with the bottom of the steel drill body (1), the inside of the steel drill body (1) is sequentially provided with a movable cavity (5), a guide groove (6) and a containing cavity (7) from top to bottom, the movable cavity (5) is provided with a screw rod (8), the screw rod (8) is rotatably arranged in the movable cavity (5), and the top end of the screw rod (8) extends to the inside of the fixed seat (2) after penetrating through the steel drill body (1), the bottom of the screw rod (8) extends to the inside of the guide groove (6), and the bottom of the screw rod (8) is provided with a movable cylinder (11), the inner wall of the movable cylinder (11) is threadedly connected with the screw rod (8), the outer wall of the movable cylinder (11) is slidably connected with the guide groove (6), and the bottom of the movable cylinder (11) is fixedly connected with a cutting cone (12), the cutting cone (12) is located in the containing cavity (7), and the outer wall of the steel drill body (1) is further provided with a measuring mechanism (13) for setting an initial point and an auxiliary positioning mechanism (14) for strengthening the fixation of the steel drill body (1). When the screw rod (8) rotates, the cutting cone (12) can be driven to extend out of the movable cavity (5) to the outside of the steel drill body (1); when the cutting cone (12) extends out of the containing cavity (7), the three cone tips (4) can be expanded.

2. The device according to claim 1, characterized in that: The measuring mechanism (13) comprises a moving plate (131), two lead screws (132) and a rotating assembly (133) for driving the two lead screws (132) to rotate, a placing groove (134) is formed in the outer wall of the steel drill body (1), the two lead screws (132) are rotatably arranged in the placing groove (134), and the top ends of the two lead screws (132) penetrate through the steel drill body (1) and extend into the fixed seat (2), the moving plate (131) is movably sleeved on the two lead screws (132) and is threadedly connected with the two lead screws (132), the rotating assembly (133) is installed in the fixed seat (2) and is in transmission connection with the two lead screws (132), a recess (135) is formed in one side of the moving plate (131), a display plate (136) is hinged to the recess (135), an LED light bar (137) is installed in the recess (135), a light uniforming sheet (138) is arranged on the side of the outer wall of the display plate (136) facing the LED light bar (137), and a scale line is arranged on the side of the display plate (136) away from the light uniforming sheet (138).

3. The device according to claim 2, characterized in that: An explosion-proof glass plate (139) is further fixedly arranged in the recess (135), and the explosion-proof glass plate (139) is connected with the outer wall of the steel drill body (1).

4. The device according to claim 3, characterized in that: The fixed seat (2) is internally and fixedly connected with a partition plate (21), the partition plate (21) divides the fixed seat (2) into a first cavity (22) and a second cavity (23), a power box (24) and a display (25) are arranged in the first cavity (22), one side of the top of the fixed seat (2) is fixedly connected with an arc-shaped fixed plate (26), one side of the arc-shaped fixed plate (26) is hingedly connected with a cover plate (27), the arc-shaped fixed plate (26) and the cover plate (27) are both matched with the first cavity (22), and the arc-shaped fixed plate (26) and the cover plate (27) are respectively located above the power box (24) and the display (25).

5. The device according to claim 4, characterized in that: The second cavity (23) is internally provided with a transmission assembly (231) for driving the rotation of the screw rod (8), the transmission assembly (231) comprises a driving gear (232), a driven gear (233) and a handle (234), the driving gear (232) is fixed at the top end of the screw rod (8), the driven gear (233) is rotatably arranged in the fixed seat (2), and the driven gear (233) is engaged with the driving gear (232), the handle (234) is fixedly connected with the driven gear (233), and the handle (234) extends to the outside of the fixed seat (2) after penetrating the partition plate (21) and the arc-shaped fixed plate (26) in sequence.

6. The device according to claim 2, characterized in that: The rotation assembly (133) is mounted on one side of the second cavity (23) away from the transmission assembly (231), the top ends of the two lead screws (132) are rotatably connected with the bottom of the partition plate (21), the rotation assembly (133) is in transmission connection with the two lead screws (132), a knob (140) is rotatably arranged on the inner bottom wall of the fixed seat (2), the knob (140) extends to the outside of the fixed seat (2) after penetrating the partition plate (21) and the arc-shaped fixed plate (26) in sequence, and the rotation assembly (133) is in transmission connection with the knob (140).

7. The device according to claim 1, characterized in that: The auxiliary positioning mechanism (14) comprises a plurality of auxiliary positioning rods which are uniformly arranged on the outer wall of the steel drill main body (1) in the circumferential direction, the auxiliary positioning rod comprises a connecting piece (141), a hinged rod (142), a sleeve ring (143) and a positioning rod (144), the connecting piece (141) is fixed on the outer wall of the steel drill main body (1), the hinged rod (142) is hinged on one side of the connecting piece (141), the sleeve ring (143) is hingedly arranged on one end of the hinged rod (142) away from the connecting piece (141), and the positioning rod (144) is movably inserted into the sleeve ring (143).

8. The device according to claim 7, characterized in that: The inner walls of the positioning rod (144) are both provided with sliding grooves (145), the inner walls of the sleeve ring (143) are both fixedly connected with protrusions (146) matched with the two sliding grooves (145), and the protrusions (146) are in sliding connection with the sliding grooves (145).

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