179 results about "Vertical angle" patented technology

The invention belongs to the technical field of engineering surveying, and particularly discloses a river-crossing leveling method and system.The method comprises the steps that four control points are arranged on the two sides of a water area to be measured, each control point is provided with a centering rod tool, and each centering rod tool is integrated with an upper-layer prism and a lower-layer prism with the preset fixed vertical distance; a first total station and a second total station are erected on the two banks of the water area, upper-layer prisms and lower-layer prisms arranged on centering rod tools on the opposite banks are observed synchronously and oppositely, and vertical angle and slant distance data of all observation targets are obtained; and based on the vertical angle and slope distance data, a preset fixed vertical distance is used as a checking condition, and the height difference between the target positions on the two banks is solved. According to the method, the double-layer prism tool is introduced into a physical forced closing check condition, and traditional quadrilateral geometric closing check is combined, so that the data redundancy and the reliability of results are greatly enhanced, and system errors can be effectively identified and separated.

The utility model discloses a lifting device for curtain wall construction, which comprises a carrier, an extension lifting arm and a sucker component, auxiliary devices are mounted in inner cavities at two ends of the carrier, a turntable is mounted at the upper end of the middle of the carrier, a base is mounted at the upper end of the turntable, the extension lifting arm is mounted on the base, and the sucker component is mounted on the extension lifting arm. A connecting frame is installed at the left end of the stretching lifting arm, an equipment base is rotatably installed at the other end of the connecting frame, a telescopic rod used for adjusting the vertical angle of the equipment base is rotatably installed between the connecting frame and the equipment base, a rotating device is installed at the upper end of the equipment base, and a suction cup assembly is installed at the left end of the rotating device. The problems that in the prior art, although a lifting device can meet the installation requirements of curtain walls with different inclination angles during use, a vacuum suction cup mechanism does not have an adjusting function in the use process, adjustment cannot be conducted according to the curtain walls with different sizes, and the applicability of the device is reduced are solved.

A non-vertical flow meter is provided that includes a chamber comprising an inlet and an outlet, wherein the chamber, the inlet and the outlet are disposed at a non-vertical angle. The non-vertical flow meter also includes a pivoting sensing surface and a load cell. The pivoting sensing surface disposed on an interior surface of the chamber, and the load cell is in operational communication with the pivoting sensing surface and arranged to sense pressure applied to the pivoting sensing surface and output a signal proportional to a flow rate of a material flowing within the chamber.

The utility model provides a potted flower transportation packaging box, which relates to the technical field of potted flower transportation and comprises a cuboid-shaped shell, trapezoidal notches are arranged on the upper portions and the lower portions of four vertical angle edges of the shell, the angle edges can be folded inwards along the trapezoidal notches, and lifting pieces are fixed on the outer surfaces of at least two opposite angle edges. According to the potted flower transportation packaging box, stress can be more evenly distributed through the design of the trapezoidal notches, when the corner edges are folded inwards along the notches, the stress can be effectively dispersed through the shape, and material breakage or deformation caused by too high local stress is avoided; the notches are designed to be trapezoidal, so that more material connection areas can be reserved on the premise of not influencing the folding function, and the structural strength of the whole shell is improved.

The utility model relates to the field of construction lofting, aims to solve the problems that in the prior art, an instrument cannot realize inclined plane lofting, and a worker cannot accurately measure a horizontal or vertical angle, and provides a high-precision inclined plane lofting device which comprises a structure supporting system for adjusting the level, the top of the structure supporting system is movably connected with a laser emitting system used for horizontal and vertical plane lofting and inclined plane lofting. The laser emitting system is provided with a base, the top face of the base is rotationally connected with a U-shaped rotating frame, a rotatable and fixed laser emitter is clamped between two wings of the U-shaped rotating frame, a horizontal laser emitting opening is formed in the outer wall of the laser emitter, an angle displayer is arranged on the lower portion of the horizontal laser emitting opening, and the angle displayer is located on the outer wall of the laser emitter. And the angle display is electrically connected to the U-shaped rotating frame and the laser transmitter. The inclined plane lofting device has the advantages that accurate lofting of an inclined plane is conveniently achieved, and a worker can accurately locate the horizontal angle or the vertical angle.

The invention discloses an omni-directional form scanning device suitable for a large-size rock sample. The omni-directional form scanning device comprises a bearing table, a hydraulic lifting system, a scanning system and a computer system, the hydraulic lifting system comprises a first group of lifting devices and a second group of lifting devices; the scanning system comprises a scanning device mounted on the bearing table and arranged around the rock test piece and a scanning device arranged on the side of the rock test piece; each scanning device comprises a hyperspectral camera, a high-definition camera and a vertical angle adjusting device, and the computer system controls the first group of lifting devices and the second group of lifting devices to jack the rock test piece simultaneously or alternately; the computer system receives data shot by the hyperspectral camera, matches the data with a built-in mineral spectrum library, determines mineral types and analyzes mineral components on the surface of the rock test piece; data shot by the high-definition camera is subjected to data preprocessing and multi-view alignment to complete model reconstruction, and the shape of the surface of the rock test piece is analyzed. According to the invention, the structure of the morphological scanning device is optimized, and the precision of morphological model splicing is improved.

The application discloses a tunnel rock mass structure scanning system and a working method thereof. The tunnel rock mass structure scanning system comprises a rock mass scanning device, wherein the rock mass scanning device comprises a scanner, a horizontal adjusting device, a vertical adjusting device, a vertical angle adjusting structure and a hydraulic support. The fixed part of the hydraulic support is fixedly installed on the ground of a tunnel. The movable end of the hydraulic support is connected to the bottom of the vertical adjusting device. The vertical driving end of the vertical adjusting device is connected to the bottom of the horizontal adjusting device. The vertical angle adjusting structure is rotatably installed on the horizontal driving end of the horizontal adjusting device. The scanner is installed on the vertical angle adjusting structure and can rotate in the vertical direction through the vertical angle adjusting structure. In the scanning process, the hydraulic support can calibrate the levelness of the scanner. The horizontal adjusting device and the vertical adjusting device can jointly adjust the scanner to move to each preset detection point in sequence. The vertical angle adjusting structure can make the scanner rotate in the vertical direction on each detection point to comprehensively scan the measured rock mass.

A dual-light camera for evaluating the fusion quality of visible light and infrared images comprises a dual-light camera body, a horizontal angle adjusting mechanism and a vertical angle adjusting mechanism, the vertical angle adjusting mechanism comprises a U-shaped base, a rotating column and a motor, the dual-light camera body is connected to the U-shaped base through the rotating column, and the motor is connected to the horizontal angle adjusting mechanism. The dual-light camera body rotates by taking the rotating column as an axis, and an output shaft of the motor is rigidly connected with the connecting column; the horizontal angle adjusting mechanism comprises a base, a connecting column, a gear, an electric telescopic rod and a rack, the base is located below the U-shaped base, the upper end of the connecting column is connected with the U-shaped base, the lower end is connected with the base, and the gear is fixed to the outer surface of the lower end of the connecting column; the electric telescopic rod is installed on the upper surface of the base, the rack is installed on the electric telescopic rod, the rack is driven to linearly move through the telescopic action of the electric telescopic rod, and the rack is meshed with the gear. According to the invention, the vertical angle and the horizontal angle of the dual-light camera can be adjusted, and the angle adjustment is accurate and stable.

The present application discloses a method and a device for controlling a micro galvanometer of a solid-state LiDAR, and a solid-state LiDAR. The method includes acquiring a vertical angle range of a field of view scanned by the solid-state LiDAR, determining a first vertical angle of the field of view and a second vertical angle of the field of view corresponding to a preset ROI region of the solid-state LiDAR, reducing a slow axis scanning speed of the micro galvanometer to a first preset speed when it is monitored that the micro galvanometer scans the first vertical angle of the field of view, and adjusting the slow axis scanning speed of the micro galvanometer to a second preset speed when it is monitored that the micro galvanometer scans the second vertical angle of the field of view.

The utility model discloses an adjusting device for a teaching screen of a power concentration motor train unit structure, which comprises a base, a connecting plate and a body, and pulleys are fixedly arranged on the periphery of the bottom surface of the base; sleeves are symmetrically mounted on the surface of the top of the base, lifting assemblies are arranged in the sleeves, each lifting assembly comprises a threaded rod rotationally connected with the corresponding sleeve, and through cooperation of a rotating groove, a groove, a telescopic rod, a compression spring, a stabilizing block, a limiting ball, a rotating block, a circular groove, a sliding block and a limiting groove, the stability of the lifting assemblies is improved; the body can be adjusted in the left-right direction on the basis that the vertical angle of the body can be adjusted in the prior art, so that the angle of the body can be adjusted according to needs, and students can watch the body more conveniently to the maximum extent; the lifting of the body can be adjusted, so that the teaching experience of students can be improved.

The utility model discloses a device for controlling the drilling perpendicularity of a drilling machine, and relates to the technical field of drilling of drilling machines. The device comprises a crawler, a guide frame is hinged to one end of the crawler, a first electric push rod is hinged to one end of the crawler, follow-up sliding grooves are symmetrically formed in one end of the guide frame, follow-up sliding blocks are slidably connected into the follow-up sliding grooves, the output end of the first electric push rod is hinged to the follow-up sliding blocks, and a perpendicularity sensor is fixedly connected to one end of the guide frame. According to the drilling machine, when a first electric push rod is started to push a follow-up sliding block to eject out of a guide frame to rotate around a hinge shaft to be perpendicular to the ground, the drilling perpendicularity of the drilling machine body is monitored in real time through a perpendicularity sensor, and meanwhile when one end of the drilling machine body is driven to penetrate through a guide hole to be drilled into the ground, the drilling perpendicularity of the drilling machine body is monitored; one end of the drilling machine body is clamped and limited through the fixing assembly, so that the drilling precision of the drilling machine body is improved, and monitoring and guiding limiting of the vertical angle of the drilling machine body are conveniently achieved.

The present invention relates to a glazing system comprising a vehicle glazing (100), the glazing having a transmission window (111) in a near-infrared range and a diverging lens (20) having a first surface (21) and a second surface (22), opposite the first surface, the second surface (22) being intended to be oriented towards the outside of the glazing, at least one of said first and second surfaces, the diverging lens (20) having a first surface (21) and a second surface (22) being structured, the structured surface comprising a set of structures, in relief, concentric around said optical axis, and according to a radial section of the structured surface, the set of structures form an alternation of facets (210) and counter-facets (211).The diverging lens (20) is arranged and configured so as to receive said emission beam (70) from the LIDAR on the facets of the structures and all or part of the structures, called reference structures, each have facets at an angle Ak with respect to said plane of the diverging lens, the angle Ak of ​​the facets in absolute value increases with the radial distance, each having a height which varies with distance from the optical axis such that the external vertical angular aperture VFOV2 is greater than the initial vertical angular aperture VFOV1 and the external horizontal angular aperture HFOV2 is greater than the initial horizontal angular aperture HFOV1. Figure for the abbreviation: Fig. 1.

To provide an easy-to-use handrail.SOLUTION: A handrail comprises a panel, a corner vertical frame 2A, and a pressing edge 3A. The panel includes a pre-attached panel 11 and a post-attached panel 12, depending on the attachment sequence. The corner vertical frame 2A has a one lateral-surface-side visible surface 2A1 respectively facing one lateral surface (111, 121) of the pre-attached panel 11 and the post-attached panel 12, and a depth-facing surface 2A2 respectively facing the depth surfaces of the pre-attached panel 11 and the post-attached panel 12. The pressing edge 3A has an other-lateral-surface-side visible surface 3A1 respectively facing the other lateral surfaces (113, 123) of the pre-attached panel 11 and the post-attached panel 12, and a depth piece 3A2 facing the depth surface of the post-attached panel 12. The pressing edge 3A is mountable in a top-bottom reversible manner, and the depth piece 3A2 of the pressing edge 3A overlaps the depth-facing surface 2A2 on the post-attached panel 12 side, allowing the pressing edge 3A to be mounted from the other lateral surface onto the corner vertical frame 2A.SELECTED DRAWING: Figure 3

A training device for ball sports 1 comprises a launching section 3 comprising a pair of launch wheels 15, the launch wheels 15 having substantially parallel axes of rotation, and an adjustment mechanism 19 configured to adjust the vertical angle of launch of the launch wheels 15; a base section 2 supporting the launching section 3; the base section 2 comprising a base swivel 6 comprising an outer perimeter base 9 sized and shaped to provide a stable contact with the ground or other surface on which the base section 2 is resting, and at least one leg 10 connected to the outer perimeter base 9 and extending upwards to connect with and support the launching section 3 above the ground or other surface, the leg or legs 10 and launching section 3 mutually configured for rotational connection so that the base section 2 can freely swivel in substantially the horizontal plane.

The utility model discloses a multi-axis moving mechanism for intelligent welding, which belongs to the technical field of welding, and comprises a bottom plate and a welding piece placing disc, and a crank type three-degree-of-freedom moving mechanism is mounted at the upper end of the bottom plate; the crank type three-degree-of-freedom moving mechanism comprises a driving assembly and a movable supporting assembly. The driving assembly is installed at the upper end of the bottom plate. The lower portion of the movable supporting assembly is connected with the driving assembly, and the upper portion of the movable supporting assembly is connected with the welding piece containing disc. And an automatic centering clamping mechanism is mounted at the upper end of the welding part placing disc. Through cooperation of the driving assembly and the movable supporting assembly, the spatial position of a welding piece is continuously changed from multiple angles such as the horizontal angle or the vertical angle; and an additional positioning mechanism does not need to be arranged through the automatic centering clamping mechanism, it is guaranteed that all the welding pieces can be located at the set welding point positions, and the practicability of the device is improved.

This item is a bracket for fixing the end of a beam to a support post at the end of a safety fence, which allows the vertical angle of the beam to be adjusted.

The application provides a prism remote control system and method, a user terminal sends a control command to a server, a control terminal obtains the control command from the server and converts the control command into a control signal to send to a control device, the control device controls the working state of a stepping motor and a lifting motor respectively through the control signal to control the horizontal rotation and vertical rotation of the prism, so as to remotely adjust the azimuth angle and vertical angle of the prism. By using the application, the labor cost of control network re-measurement can be effectively reduced without affecting the application of other observation scenes of the prism and the accuracy of control network re-measurement results.

The application discloses a kind of angle measurement method, device, equipment and storage medium of double-inclined angle plate piece, the method comprises: the angle plate piece of two-way inclined structure in ship is modeled, respectively original near center line, original angle line and original upper edge line vertical projection in plan view, obtain vertical near center line, vertical angle line and vertical upper edge line, then horizontal projection to horizontal near center line, horizontal angle line and horizontal upper edge line, according to vertical near center line, vertical angle line and vertical upper edge line, and horizontal near center line, horizontal angle line and horizontal upper edge line construct the angle of angle plate piece angle line method surface angle, finally measure the degree of angle line method surface angle as the angle of angle plate piece. With the normal angle of double-inclined angle plate piece as processing basis, accurate reference is provided for angle rolling processing, the processing difficulty of double-inclined angle plate piece is reduced, the lofting development efficiency of double-inclined angle plate piece is effectively improved, and production cost is saved.

Method and system for mapping and / or inspecting an underground pipeline infrastructure, using: a sensor probe for collecting geospatial data while travelling through a pipeline of the pipeline infrastructure, and a driving mechanism comprising a tether, for driving the sensor probe, wherein the sensor probe is provided to enter the pipeline at a vertical angle through a live-fluid entry apparatus and once inside the pipeline make a 90° angle change of direction to align with the orientation of the pipeline.

This invention belongs to the field of bridge construction surveying technology, specifically a method for measuring the verticality of bridge tower piers at close range and with large inclination angles in mountainous areas. The method includes: S1, calculating the angle between the intersection hypotenuse and the vertical line of the tower pier based on the known elevation and measured slope distance of the measuring point at the top of the tower pier, then calculating the horizontal distance and solving for the first corrected coordinates of each measuring point, thus avoiding vertical angle observation errors under large inclination angles; S2, accurately measuring the actual distance between the measuring points of the two tower piers, and using this as a constraint to adjust the first corrected coordinates to obtain a high-precision second corrected coordinate for the center of the tower top; S3, calculating the verticality based on the second corrected coordinates of the tower top and the known coordinates of the tower bottom. This invention effectively overcomes the problem of low measurement accuracy caused by close-range, large-inclination angle observations in narrow mountainous terrain, eliminates the need for multi-layered control networks, improves measurement efficiency and accuracy, and reduces operational risks and costs.

This application discloses a beam configuration method, apparatus, and computer program product. The beam configuration method includes: determining a horizontal beam and a vertical beam, as well as the antenna's horizontal angle of arrival and vertical angle of arrival, based on each sampling point and SSB beam information in a measurement report; determining downlink simulated transmit angle information, including simulated downlink horizontal transmit angle and simulated downlink vertical transmit angle, based on the vectors of the horizontal and vertical beams; and determining the beam configuration based on the difference between the simulated downlink horizontal transmit angle and the antenna's horizontal angle of arrival, and the difference between the simulated downlink vertical transmit angle and the antenna's vertical angle of arrival. This application's embodiment, based on the sampling point data and SSB beam information in the measurement report data reported by the terminal, ensures greater accuracy of the data, thereby identifying whether the beam configuration is reasonable and improving the accuracy and adaptability of the beam configuration.

The utility model discloses a folding camera capable of rotating at multiple angles, and relates to the technical field of cameras. The device comprises a shell, the left side of an inner cavity of the shell is fixedly connected with a lifting mechanism, the right side of the lifting mechanism is fixedly connected with a positioning shell, the bottom of the positioning shell is fixedly connected with a first steering engine, and the top of the output end of the first steering engine penetrates through the positioning shell and is fixedly connected with a rotating shell. The use height of the positioning shell is adjusted through the lifting mechanism so that the positioning shell can move out of the inner cavity of the shell, the first steering engine drives the rotating shell to rotate horizontally, the second steering engine and the adjusting frame are in linkage to control the vertical angle of the camera module, the servo motor finely adjusts the orientation of the camera module through the fixing table and the control base, and multi-direction automatic rotating shooting is achieved. The conductive ring and the power connection contact ensure continuous power supply through the rotating disc, wire winding is avoided, the shooting range is expanded, and the problem that an existing mobile camera lacks an automatic multi-angle adjusting function is solved.

The present application relates to a kind of beam end bidirectional telescopic device and telescopic method, and the driven sleeper and the driven sleeper of fixed transition plate two sides and fixed transition plate two sides are respectively provided with scissor linkage mechanism, the scissor linkage mechanism is adapted to the bridge with fixed transition plate, driven sleeper and driven sleeper together with the variation amount of beam joint width is ±800mm.It is characterized in that: (1) the scissor linkage mechanism is connected between the originality and the fixed transition plate with bidirectional hinge support, can adapt to the horizontal, vertical angle of beam end at beam joint, the whole mechanism rotates flexibly, and is not easy to jam;(2) driven sleeper is connected by bolt and link installation base, and moves freely along with link, and can prevent link foundation from being warped, guarantee the stability of the whole mechanism telescoping;(3) the link and the friction surface of link are provided with ultra-high molecular weight polyethylene small resistance wear pad, can minimize the rotating friction force of link joint, and the strength is reliable;(4) link joint connecting hole and base B connecting hole are provided with high-strength shaft sleeve, can maximize the resistance to shear stress from bolt or base pin.

The invention discloses a speed-up railway precision conductor construction method with virtual control points added, which comprises the following steps: S1, arranging conductor points in a staggered manner along two sides of the advancing direction of a speed-up railway line, and arranging the virtual control points between the adjacent conductor points; s2, arranging total stations on each traverse point one by one, and arranging prisms on two front and back adjacent traverse points and adjacent virtual control points; observing each prism by using a total station to obtain a horizontal direction, a slant distance and a vertical angle from the center of the total station to the center of each prism; s3, performing gross error detection analysis on the observation values, and rejecting the detected gross error observation values or re-measuring the observation stations where the gross error observation values are located; and S4, establishing an acceleration railway conductor control network with virtual control points by using all reliable horizontal angles and horizontal distances. According to the method provided by the invention, on the premise of not increasing the burying cost of the control points, on the basis of the connecting wires, only several temporary target points are observed by each observation station, so that the effect of remarkably improving the precision and reliability of the control network is achieved.

This utility model relates to the field of adjustment mechanism technology and discloses an adjustment mechanism for a multi-angle projection bracket of a digital display projection clock. The mechanism includes a base with an adjustment component on the top for adjusting the angle. The bracket drives a connecting rod to rotate laterally on a bearing, which in turn drives the insert blocks to rotate sequentially until they align with ten sets of second slots. Then, the restoring force of a first spring causes the slider to slide back to its original position within the movable chamber, inserting the insert blocks into the second slots. This achieves the purpose of adjusting the lateral rotation angle of the digital display projection clock. Furthermore, a rotating rod rotates within a fixed base, causing another set of insert blocks to insert into a corresponding set of first slots, thus achieving the purpose of adjusting the vertical angle of the digital display projection clock. This makes angle adjustment more convenient and faster for operators, while solving the problem of cumbersome adjustment steps in existing bracket adjustment mechanisms.

The utility model relates to the field of measurement and testing, in particular to a perpendicularity detection instrument, which comprises a shell, the shell is an installation carrier of a detection instrument main body, the detection instrument main body is installed at the center of the side wall of the shell, and the detection instrument main body is used for detecting a vertical angle; the device comprises a shell, and further comprises a magnet, an electric suction cup, a sliding block, a handle and a controller, a mounting groove is formed in the side wall, used for detecting perpendicularity, of the shell, the magnet is fixedly mounted in the mounting groove of the shell, and the magnet is used for adsorbing the shell to a detection face of an adsorbable material. According to the utility model, the magnet and the electric sucker are combined, so that the instrument can be stably adsorbed on detection surfaces made of different materials, and the magnet can be directly used for metal and other adsorbable materials; and for non-adsorbable materials, stable adsorption can be realized through the electric sucker, so that the application range of the instrument is widened.

The invention relates to the technical field of transformer substation equipment, in particular to a high-strength transformer substation frame type support which comprises a lower transverse frame and an upper transverse frame, two upper supports are rotationally connected to the two ends of the upper transverse frame, two lower supports are rotationally connected to the two ends of the lower transverse frame, and the upper supports and the lower supports located at the same end are rotationally connected. A support connecting mechanism is arranged between the upper support and the lower support which are located at the same end. The two threaded sliding blocks at the two ends are driven to move reversely by rotating the threaded rod, so that the two upper supports and the two lower supports are driven to rotate reversely, the supports can be unfolded when the two upper supports and the two lower supports rotate to the vertical angle, and when the two upper supports and the two lower supports rotate to the inclined angle from the vertical angle, the supports can be unfolded. The whole support can be folded and stored, compared with an existing support fixed through bolts, the support can be rapidly folded and stored, and the moving and transporting time is greatly shortened.

A billiard hitting auxiliary training device belongs to the technical field of sports equipment. The auxiliary training device for billiard hitting comprises a clamping assembly used for clamping a cue and limiting the cue; the sliding assembly is used for driving the clamping assembly to move along the sliding assembly so as to achieve ball hitting; and the rotating assembly is used for driving the sliding assembly to rotate in the horizontal plane. According to the utility model, the movement angle of the joint and the positions of the rod holding hand and the rod supporting hand are limited, so that a batter can feel a correct batting posture. And a hitting point and a subsequent walking path can be seen by aiming at the auxiliary light. The equipment has a multi-direction and angle adjusting function, and on the basis of practicing batting at the same position, direction changing selection can be carried out. And the vertical angle can be adjusted, so that the batting training of fixed rod, high rod, low rod and left-right plugging can be practiced, and the accurate batting action can be ensured.

A bending device (10) for coiled tubing protects the entire path from reel to injector while protecting the main controlled bend from reel to injector. The bending device includes a conduit (20) and a stand (80). The conduit (20) includes a bending section (30) and a flexible section (60). The main controlled bend is isolated in the bending section (30) while the flexible section (60) is designed with a smaller adjustment elbow. Changes in the vertical angle no longer cause damage when dispensing coiled tubing from different positions on the reel. Changes in the lateral angle when dispensing coiled tubing from both sides of the reel no longer cause damage. The stand (80) can be added to make more adjustments to the lateral angle.

The utility model provides a three-axis cement mixing pile machine construction positioning supporting base which comprises a support, a supporting plate is arranged on the surface of the support, a plurality of sets of positioning plates are fixedly arranged on the surface of the supporting plate, a plurality of sets of connecting holes are formed in the positioning plates, a mounting frame is welded to the outer wall of the support, and a total station is arranged on the mounting frame. Connecting columns are fixedly installed on the two sides of the support, and supporting columns are telescopically arranged on the surfaces of the connecting columns through oil cylinders. According to the three-shaft cement mixing pile machine, the vertical angle between the drill rod and the ground can be conveniently checked and adjusted, meanwhile, the drilling depth of the drill rod can be conveniently observed and recorded when the drill rod enters soil, and the construction perpendicularity and the construction quality of the three-shaft cement mixing pile machine are ensured.