Ventilation infrared support hanger moving and positioning device and using method

Abstract

The invention discloses a ventilation infrared support hanger moving and positioning device and a using method, and relates to the technical field of ventilation installation. The ventilation infrared support hanger mobile positioning device and the use method are characterized in that the specific operation is as follows: during programming, the driving distance of a trolley is firstly set, namely, a numerical value is preset through numeric keys, the unit of the preset numerical value is m, and an LCD (Liquid Crystal Display) screen receives an electronic signal and displays 4.0 to inform a user that the received digital signal is consistent with a preset signal. According to the ventilation infrared support hanger moving and positioning device and the using method, the distance moving detection equipment is used for replacing steel tape errors involved in manual operation, the precision of positioning dimensions is improved, a motor is usually adopted as driving equipment for the designed intelligent trolley, and the moving distance of the intelligent trolley can be controlled through an encoder. The encoder is a device for measuring the rotation angle and speed of the motor, and can convert the motion of the motor into a digital signal, thereby achieving the precise control of the trolley.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation installation, and in particular to a ventilation infrared support and hanger mobile positioning device and a use method thereof. Background Art

[0002] During the installation of the ventilation system, the support and hanger brackets are prefabricated so that the ventilation system can be installed later. In traditional construction, the workers use the top plate to mark the position. The process requires the cooperation of personnel, steel tape measures, and ink lines. Even the more advanced construction technology using infrared dot marking still cannot do without steel tape measures, that is, the personnel still cannot reduce the labor in the process of completing this process, and there are deviations in the manual operation process. The traditional construction involves a technical drawback of the appearance quality of the installation operation, that is, the ventilation system in the installation project is prefabricated by mechanical processing, and the appearance size and diagonal size deviation of the finished product are small. However, when manually installing the support and hanger brackets, there are many factors that affect the manual operation, such as mood, the flatness of the floor, technical operation errors, the difficulty of installation operations, etc., and the possibility of deviation in results will increase. The most common appearance quality problem at the construction site is the deviation in the positioning of the hanger rod, which causes the hanger rod and the ventilation system to not be hung straight during the installation process, but a quality defect of partial bending and twisting of the hanger rod occurs, which has a certain impact on the appearance quality acceptance and subsequent awards.

[0003] The above-mentioned traditional construction affects the construction progress, increases the staffing, and affects the later results in the process. This device liberates manpower through the setting of spacing parameters, mobile tracking mechanical device and attached infrared cross-point ranging, and improves the efficiency and accuracy of fixed-point installation of ventilation supports and hangers. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a ventilation infrared support and hanger mobile positioning device and a use method, which solves the problems existing in the prior art.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a ventilation infrared support bracket mobile positioning device and a method of use, the specific operation is as follows:

[0008] In programming, first set the traveling distance of the trolley, that is, preset a value through the numeric keys, and the preset unit is m. The LCD display screen receives the electronic signal and displays 4.0 to inform the user that the received digital signal is consistent with the preset signal, playing a role of confirmation during use. For example, when the encoder receives a digital signal of 4.0m, the output signal will be converted into the rotation angle and speed of the servo motor (8-1), causing the servo motor to drive the wheel hub forward through coaxial transmission, so as to accurately achieve the moving distance of 4.0m in the set case. Thus, the actual traveling distance of the trolley can be calculated. When the moving trolley reaches the set distance, the servo motor stops rotating. The infrared cross projects infrared target cross points on the basement roof and the infrared cross points at the set distance on the side. The legend of the points is in the shape of a "worker" character, and the intersection of the infrared rays is the drilling position of the prefabricated suspender. By the advancement of equipment technology, it replaces the technical defects and potential safety hazards existing in traditional construction. Only one operator is required to climb to high places to mark the points, preparing for the later screw drilling work.

[0009] The moving device serves as the load-bearing main body and is equipped with an infrared emission device inside. The infrared emission device is connected through a universal shaft to ensure that the emission device is horizontal. The universal shaft device is a horizontal frame, with different sizes and internal and external structures. The vertical metal brackets play a role of support and limitation. The universal shaft device is connected through a one-way bearing, and the axial chain directions of the internal and external structures are in the vertical direction and the axial chain structures are connected in sequence and non-penetratingly, so as to ensure the preset effect of the universal shaft, ensure the levelness of the infrared projection, and place the infrared projection device inside the box to avoid the air flow causing晃动 to the projection device and forming an unstable wave band. The role of the plumb bob is to accelerate the stabilization rate of the infrared projection device and shorten the implementation time of the process.

[0010] The universal shaft adopts an open "return" character structure, and the outer opening and the inner opening form a two-way independent swinging space. The universal function is realized through a non-penetrating connecting shaft. The universal function is realized as follows: the inner opening structure is connected to the infrared laser projection one-way penetrating shaft, and the infrared laser connecting shaft does not penetrate the inner and outer opening structures, but is only independently connected to the inner opening and can swing in a one-way circular axis. The connecting shaft between the inner opening and the outer opening is vertically and independently connected, only segmentedly connected within the spatial section of the inner and outer openings, and is set in the vertical direction with the inner opening and the laser connecting shaft. The above realizes the universal shaft function, that is, the two-way independent swinging function. The role of the universal function is to quickly level the laser emission device within the limited space, so that the device will not have offset errors during the projection process.

[0011] The role of the column skeleton is to connect the universal shaft and the laser emission device. The column skeleton serves as a suspension limiting device, providing limitation and lifting to achieve the role of universal stability.

[0012] The limiting frame functions to limit the stability of the servo motor inside the device.

[0013] The function of the buzzer is to sound an alarm when the infrared laser transmitter is in an unbalanced state to prevent the operator from marking the deviation points and affecting the accuracy of the data.

[0014] The infrared transmitting device uses a Fresnel lens to hit the preset cross point on the top plate to form the first preset hanger point. The boom spacing is set by pressing buttons. The triangulation rangefinder device transmits signals through the infrared transmitter. The CCD detection module receives the signal to determine the distance from the device to the top of the plate. The reciprocating ring axis angle of the infrared transmitter is reversely calculated. The calculated signal result is output as a digital signal through the encoder to reciprocate the laser transmitter along the limit axis to confirm the boom points in turn, so as to assist the operators in completing the boom implementation process.

[0015] The specific implementation steps are as follows:

[0016] 1. Be familiar with the construction drawing information, and mark the positioning points on the ground according to the positioning dimensions marked on the detailed drawings.

[0017] 2. Physically mark the starting and ending points, and use iron nails to physically mark the starting and ending mark points and use white lines to limit the connection between the starting and ending intervals. Use white lines to connect the two points to form a connecting line for the same part of the working surface, and provide support and limit functions for the boom positioning device.

[0018] 3. Locate the dimensions on the ground according to the drawing and mark the boom spacing at the white line connection point to facilitate accurate control of the boom position during installation in the travel range and provide technical measures for the boom installation process.

[0019] 4. The point laser is guided upwards through the mobile positioning device to transfer the dimensions in the same position.

[0020] 5. After the device is leveled, start the laser positioning to achieve vertical deviation-free laser projection.

[0021] 6. Use a ladder or lifting equipment to reach the top of the board and mark the laser point first.

[0022] 7. Operators drill holes at marked points to install the boom.

[0023] The ground operator determines the moving distance of the next point by pressing a button, and then loops through step one to perform the drilling operation at the next point.

[0024] (III) Beneficial effects

[0025] The present invention provides a ventilation infrared support bracket mobile positioning device and a method of use.

[0026] Beneficial effects:

[0027] The ventilation infrared support and hanger mobile positioning device and use method use a distance moving detection device to replace manual work and the steel tape measure error involved in manual work, thereby improving the accuracy of the positioning size. The designed intelligent trolley usually uses a motor as a driving device, and the encoder can be used to control its moving distance. The encoder is a device that measures the rotation angle and speed of the motor, and can convert the movement of the motor into a digital signal, thereby achieving precise control of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 :Axonometric view of the main device Figure 1

[0029] Figure 2 :Axonometric view of the built-in structure of the main device Figure 2

[0030] Figure 3 :Axonometric view of the built-in structure of the main device Figure 3

[0031] Figure 4 :Schematic diagram of the main device emission intersection

[0032] Figure 5 :Main unit triangulation sensor signal processing diagram

[0033] In the figure: it consists of 1 base, 2 column frame, 3 weight, 4 laser transmitter, 5 bidirectional connecting shaft, 6 buzzer, 7 power supply, 8 servo motor (8-1, 8-2), 9 motor limit bracket, 10 moving wheel hub, 11 shell, 12 limit shaft, 13 encoder, 14 button, 15 LCD display, 16 triangulation distance sensor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-5 The present invention provides a technical solution: a ventilation infrared support bracket mobile positioning device and a method of use, the specific operation is as follows:

[0036] In programming, first set the travel distance of the trolley, that is, preset the value through the numeric keys, and the preset unit is m. The LCD display screen receives the electronic signal and displays 4.0 to inform the user that the received digital signal is consistent with the preset signal, which plays a role of confirmation during use. For example, when the encoder receives a digital signal of 4.0m, the output signal will be converted into the rotation angle and speed of the servo motor (8-1), so that the servo motor drives the hub forward through coaxial transmission, in order to accurately achieve the moving distance of 4.0m in the set case. Thus, the actual travel distance of the trolley can be calculated. When the moving trolley reaches the set distance, the servo motor stops rotating. The infrared cross projects an infrared target cross point on the basement roof and the infrared cross points at the set distances on the side. The legend of the points is in the shape of "工". The intersection of the infrared rays is the drilling position of the prefabricated suspender. By the advancement of equipment technology, it replaces the technical defects and potential safety hazards existing in traditional construction. Only one operator is required to climb to a height to mark the points, preparing for the later screw drilling.

[0037] The mobile device serves as the load-bearing main body and is equipped with an infrared emission device. The infrared emission device is connected through a universal shaft to ensure that the emission device is horizontal. The universal shaft device is a horizontal frame, with different sizes and internal and external structures. The vertical metal brackets play a role of support and limit. The universal shaft device is connected through a one-way bearing. The axial chain directions of the internal and external structures are in the vertical direction, and the axial chain structures are connected in sequence and non-penetratingly to ensure the preset effect of the universal shaft, ensure the levelness of the infrared projection, and place the infrared projection device inside the box to avoid the air flow causing晃动 to the projection device and forming an unstable wave band. The role of the plumb bob is to accelerate the stabilization rate of the infrared projection device and shorten the implementation time of the process.

[0038] The universal shaft adopts an open "回" character structure. The outer opening and the inner opening form a two-way independent swinging space, and the universal function is realized through a non-penetrating connecting shaft. The universal function is realized as follows: the inner opening structure is connected to the infrared laser projection one-way penetrating shaft. The infrared laser connecting shaft does not penetrate the inner and outer opening structures, but is only independently connected to the inner opening and can swing in a one-way circular axis. The connecting shaft between the inner opening and the outer opening is vertically and independently connected, only segmented-connected within the space section of the inner and outer openings, and is set in the vertical direction with respect to the inner opening and the laser connecting shaft. The above realizes the universal shaft function, that is, the two-way independent swinging function. The role of the universal function is to quickly level the laser emission device within the limited space, so that the device will not have offset errors during projection.

[0039] The role of the column skeleton is to connect the universal shaft and the laser emission device. The column skeleton serves as a suspension limiting device, providing limiting and lifting to achieve the role of universal stability.

[0040] The limiting frame provides a limiting function for the stability of the servo motor inside the device.

[0041] The function of the buzzer is to sound an alarm when the infrared laser transmitter is in an unbalanced state to prevent the operator from marking the deviation points and affecting the accuracy of the data.

[0042] The infrared transmitting device uses a Fresnel lens to hit the preset cross point on the top plate to form the first preset hanger point. The boom spacing is set by pressing buttons. The triangulation rangefinder device transmits signals through the infrared transmitter. The CCD detection module receives the signal to determine the distance from the device to the top of the plate. The reciprocating ring axis angle of the infrared transmitter is reversely calculated. The calculated signal result is output as a digital signal through the encoder to reciprocate the laser transmitter along the limit axis to confirm the boom points in turn, so as to assist the operators in completing the boom implementation process.

[0043] The specific implementation steps are as follows:

[0044] 1. Be familiar with the construction drawing information, and mark the positioning points on the ground according to the positioning dimensions marked on the detailed drawings.

[0045] 2. Physically mark the starting and ending points, and use iron nails to physically mark the starting and ending mark points and use white lines to limit the connection between the starting and ending intervals. Use white lines to connect the two points to form a connecting line for the same part of the working surface, and provide support and limit functions for the boom positioning device.

[0046] 3. Locate the dimensions on the ground according to the drawing and mark the boom spacing at the white line connection point to facilitate accurate control of the boom position during installation in the travel range and provide technical measures for the boom installation process.

[0047] 4. The point laser is guided upwards through the mobile positioning device to transfer the dimensions in the same position.

[0048] 5. After the device is leveled, start the laser positioning to achieve vertical deviation-free laser projection.

[0049] 6. Use a ladder or lifting equipment to reach the top of the board and mark the laser point first.

[0050] 7. Operators drill holes at marked points to install the boom.

[0051] The ground operator determines the moving distance of the next point by pressing a button, and then loops through step one to perform the drilling operation at the next point.

[0052] Example:

[0053] The purpose of the present invention is to set the spacing parameters of the ventilation system supports and hangers according to the drawings and specifications during the implementation of the device, so as to improve the progress efficiency in the early stage of construction and the accuracy of the process results.

[0054] The distance moving detection equipment is used to replace manual labor and the steel tape error involved in manual work, and the accuracy of positioning dimensions is improved. The designed smart car usually uses a motor as a driving device, and the encoder can be used to control its moving distance. The encoder is a device that measures the rotation angle and speed of the motor, which can convert the movement of the motor into a digital signal, thereby achieving precise control of the car.

[0055] In programming, the travel distance of the trolley can be set first, that is, the numerical value is preset through the numeric keys, and the numerical unit is preset to m. The LCD display receives the electronic signal and displays 4.0 to inform the user that the received digital signal is consistent with the preset signal, which plays a confirmation role during use. For example, 4.0 means that the encoder receives the digital signal of 4.0m, and the output signal is converted into the angle and speed of rotation of the servo motor (8-1), so that the servo motor coaxial transmission drives the wheel hub forward, so as to accurately achieve the moving distance of 4.0m in the set case. Thus, the actual travel distance of the trolley is calculated. If the actual travel distance of the trolley reaches the set value, the motor can be stopped to achieve the control of the moving distance of the trolley. The above device components solve the problems of positioning movement and movement accuracy.

[0056] The initial position of the point needs to be manually marked with the positioning size. When the mobile car reaches the set distance, the servo motor stops rotating, and the infrared cross hits the infrared target cross point on the top plate of the basement, as well as the infrared cross point at the set distance on the side. The point diagram is in the shape of an "I". The intersection of the infrared rays is the drilling position of the prefabricated hanger. The advanced equipment technology replaces the technical defects and safety hazards existing in traditional construction. Only one operator is needed to climb up to mark the points to prepare for the subsequent screw drilling.

[0057] The mobile device serves as the bearing body and has a built-in infrared emitting device. The infrared emitting device is connected by being suspended on a universal shaft to ensure that the infrared emitting device is in a horizontal position during use. The universal shaft device is a horizontal frame structure, which is divided into large and small, inner and outer wrapped structures, and plays a supporting and limiting role through a vertical metal bracket. The universal shaft device is connected by a one-way bearing, and the shaft chain direction of the inner and outer structures is a vertical direction, and the shaft chain structures are connected in sequence and non-through to ensure the preset effect of the universal shaft suspension.

[0058] The infrared transmitter uses the Fresnel lens to project the preset cross point onto the top plate, forming the first preset hanger point.

[0059] There are two directions, HV. According to the actual needs on site, this device uses three-line setting to determine the position of the ventilation boom, that is, the intersection of the three lines locates the exact position of the two booms. An infrared laser is set in the middle of the device, and the three axes are in the same position. Coaxial photosensitive ranging is used to measure the vertical distance between the ground point and the top plate, and the servo motor is linked to rotate.

[0060] The triangulated distance measuring sensor, with an angled reflection object, emits an infrared laser to reflect the object, so that the CCD detector receives it to determine the distance between the device and the detection object, and feeds back the digital signal to the encoder. The encoder drives the servo motor (8-2) to rotate and adjust the projection angle, and the accuracy of the symmetrical intersection is adjusted with the assistance of the limit axis, and the three-way "I"-shaped intersection is projected on the top plate.

[0061] The present invention is implemented as follows: the above-mentioned ventilation infrared support and hanger mobile positioning device is composed of a base, a column frame, a heavy hammer, a laser transmitter, a two-way connecting shaft, a buzzer, a power supply, a servo motor, a motor limit bracket, a mobile wheel hub, a shell, a limit shaft, an encoder, a button, and an LCD display screen.

[0062] The digital keys are used to preset the boom spacing, and the LCD display screen is used to display the numerical input. The operator can visually confirm the input signal and confirm and cancel the final digital signal result through the cancel / confirm key. In order to achieve the final position point through the encoder linkage servo motor output angle and speed, this device sets the distance movement as a single confirmation, that is, after each time / each point is completed, the device stops moving and uses manual secondary confirmation of the next point distance. The implementation steps are the same as the initial implementation, and will not be repeated here.

[0063] During the implementation process, the intuitive expression of the moving distance of the device is considered, and the device is corrected in time whether it deviates during the movement process. Iron nails are used to limit the starting and ending positions, and white lines are used to tighten the intervals, and the device is attached to the white lines to complete the limit movement function. Reducing the manufacturing cost and R&D cost of the device does not affect the expected implementation results.

[0064] The base plays the role of integrating and accommodating the internal components of the device. The weight and infrared laser are integrated to facilitate the rapid leveling of the laser transmitter and accurately project the point without deviation. The mobile hub is linked to the servo motor, and the device is accurately moved according to the encoder output signal to set the distance, that is, the boom spacing. The digital buttons determine the spacing setting distance, click OK to start, and reset each time after reaching the set distance. Considering the different difficulty levels of boom drilling, a single reset setting is set, and the device movement direction is guaranteed according to the solid white line.

[0065] The use of white lines and iron nails to assist the device in moving forward is to determine a straight line at two points, and to intuitively and cheaply find out whether the device path is offset. The core purpose is to transfer the high-altitude point distribution work to the ground through the infrared projection device, reduce the number of workers involved in high-altitude work, and reduce the safety hazard coefficient of high-altitude work.

[0066] This device adopts the mechanical principle of rotating and positioning cross points in the same plane, and can locate the two points of the support bracket with one button. It is efficient and accurate, reduces labor, and improves the time for preliminary preparation work of the installation operation.

[0067] In summary, the ventilation infrared support and hanger mobile positioning device and its use method, through the distance movement detection equipment to replace the manual and manual operation involved in the steel tape error, improve the accuracy of the positioning size, wherein the designed intelligent trolley usually uses a motor as a driving device, and the encoder can be used to control its moving distance. The encoder is a device that measures the rotation angle and speed of the motor, which can convert the movement of the motor into a digital signal, thereby realizing precise control of the trolley.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation infrared support and hanger mobile positioning device and its usage method, characterized in that: The specific operations are as follows: During programming, the travel distance of the car is set first, that is, the value is preset through the numeric keys, and the preset value unit is m. The LCD display receives the electronic signal and displays 4.0 to inform the user that the accepted digital signal is consistent with the preset signal, which plays a confirmation role during use. For example, when the encoder receives a digital signal of 4.0 m, the output signal will be converted into the rotation angle and speed of the servo motor (8-1), so that the servo motor drives the hub to move forward through coaxial transmission, in order to accurately achieve the moving distance of 4.0 m in the set case. Thus, the actual driving distance of the trolley can be calculated. When the moving trolley reaches the set distance, the servo motor stops rotating, and the infrared cross projects an infrared target cross point on the basement roof and infrared cross points at the set distances on the side. The legend of the points is in the shape of "工" (Chinese character for work), and the intersection of the infrared rays is the drilling position of the prefabricated suspender. By the先进性 of the equipment technology, it replaces the technical defects and potential safety hazards existing in traditional construction. Only one operator is required to climb to a height to mark the points, preparing for the later screw drilling. The mobile device serves as the load-bearing main body and is内置 with an infrared emission device. The infrared emission device is connected by a universal shaft to ensure that the emission device is horizontal. The universal shaft device is a horizontal frame, divided into large and small, inner and outer structures, and plays a role of support and limit through a vertical metal bracket. The universal shaft device is linked by a one-way bearing, and the axial chain direction of the inner and outer structures is the vertical direction, and the axial chain structures are all connected in sequence and non-penetratingly, to ensure the preset effect of the universal shaft, ensure the levelness of the infrared projection, and内置 the infrared projection device in a box to avoid the air flow causing晃动 to the projection device and forming an unstable wave band. The作用 of the plumb bob is to accelerate the stabilization rate of the infrared projection device and shorten the process implementation time. The universal shaft adopts an open "回" (Chinese character) structure, and the outer opening and the inner opening form a two-way independent swinging space. The universal function is realized through a non-penetrating connecting shaft. The universal function is realized as follows: the inner opening structure is connected to the infrared laser projection one-way penetrating shaft, and the infrared laser connecting shaft does not penetrate the inner and outer opening structures, only independently connected to the inner opening, and can swing in a one-way ring shaft. The connecting shaft between the inner opening and the outer opening is vertically and independently connected, only segmented connected within the space section of the inner and outer openings, and is set in the vertical direction with the inner opening and the laser connecting shaft. The above realizes the universal shaft function, that is, the two-way independent swinging function. The作用 of the universal function is to quickly level the laser emission device within the limited space, so that the device will not have offset errors during the projection process. The作用 of the column skeleton is to connect the universal shaft and the laser emission device. The column skeleton serves as a suspension limiting device, providing limit and lifting to achieve universal stability. The limiting frame makes a limiting function for the stability of the servo motor inside the device. The作用 of the buzzer is to发出 an alarm when the infrared laser emitter is in an unbalanced state, in case the operator marks the deviation points and affects the accuracy of the data. It should be noted that there are some inaccuracies or unclear expressions in the original text, and the translation has been done as accurately as possible based on the existing content.The infrared transmitting device uses a Fresnel lens to hit the preset cross point on the top plate to form the first preset hanger point. The boom spacing is set by pressing buttons. The triangulation rangefinder device transmits signals through the infrared transmitter. The CCD detection module receives the signal to determine the distance from the device to the top of the plate. The reciprocating ring axis angle of the infrared transmitter is reversely calculated. The calculated signal result is output as a digital signal through the encoder to reciprocate the laser transmitter along the limit axis to confirm the boom points in turn, so as to assist the operators in completing the boom implementation process. The specific implementation steps are as follows:

1. Be familiar with the construction drawing information, and mark the positioning points on the ground according to the positioning dimensions marked on the detailed drawings.

2. Physically mark the starting and ending points, and use iron nails to physically mark the starting and ending mark points and use white lines to limit the connection between the starting and ending intervals. Use white lines to connect the two points to form a connecting line for the same part of the working surface, and provide support and limit functions for the boom positioning device.

3. Locate the dimensions on the ground according to the drawing and mark the boom spacing at the white line connection point to facilitate accurate control of the boom position during installation in the travel range and provide technical measures for the boom installation process.

4. The point laser is guided upwards through the mobile positioning device to transfer the dimensions in the same position.

5. After the device is leveled, start the laser positioning to achieve vertical deviation-free laser projection.

6. Use a ladder or lifting equipment to reach the top of the board and mark the laser point first.

7. Operators drill holes at marked points to install the boom. The ground operator determines the moving distance of the next point by pressing a button, and then loops through step one to perform the drilling operation at the next point.

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