Multifunctional measuring device for engineering construction
By designing a protective shell and dust removal component for the multifunctional measuring device, the problems of the level being affected by the external environment and leveling errors are solved, all-round protection and rapid leveling of the probe are achieved, and measurement accuracy and efficiency are improved.
Patent Information
- Application Number
- CN202510763173.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2025-09-05
AI Technical Summary
Existing levels are easily affected by the external environment when measurement work is suspended or the equipment is idle, and traditional leveling methods are time-consuming and prone to errors, resulting in reduced measurement accuracy.
A multifunctional measuring device was designed, which includes a protective shell, a dust removal component and an automatic leveling system. The protective shell made of high-strength material protects the level probe, is equipped with a dust removal component to automatically remove dust, and achieves rapid leveling through an electric telescopic rod and worm gear mechanism.
Effectively protect the level probe, extend its service life, ensure measurement accuracy and efficiency, reduce maintenance costs, and improve the accuracy and stability of measurement results.
Smart Images
Figure CN120593142A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of engineering measurement, in particular to a multifunctional measurement device for engineering construction. Background Art
[0002] In the field of engineering construction, measuring devices are critical tools for ensuring construction accuracy and project quality. While existing measuring devices, such as levels, have achieved certain improvements in measurement accuracy and functionality, they still face some pressing challenges in practical use. First, when measuring is suspended or the equipment is idle, the level probe is susceptible to environmental influences such as dust, moisture, debris, and unexpected physical impact, which can damage the probe and reduce measurement accuracy.
[0003] Secondly, existing levels require precise leveling during use. However, traditional manual leveling is not only time-consuming but also prone to errors due to human factors, resulting in inaccurate measurement results. This is particularly prominent in complex construction environments, such as those with variable geological conditions or uneven construction sites, which further increases the difficulty and importance of leveling.
[0004] Based on this, those skilled in the art have proposed a multifunctional measuring device for engineering construction to solve the above problems. Summary of the Invention
[0005] In view of the deficiencies of the prior art, the present invention provides a multifunctional measuring device for engineering construction, which solves the problems raised in the above-mentioned background technology.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multifunctional measuring device for engineering construction, comprising a support, the top of the support is detachably connected to a protective shell, the interior of the protective shell is fixedly connected to a guide rod, the exterior of the guide rod is sleeved with two return springs, the exterior of the guide rod is slidably connected to two sliders, the exterior of the slider is hinged with a traction plate, one side of the protective shell is slidably connected to two movable plates, the inner side of the movable plate is fixedly connected to a rigid traction rope, two fixed pulleys are installed on the inner side of the protective shell, the inner side of the protective shell is slidably connected to a movable plate, the outer side of the movable plate is detachably connected to a level probe, and a dust removal assembly is installed on the outer side of the movable plate, and the dust removal assembly is used to remove dust on the lens of the level probe.
[0007] Preferably, the dust removal assembly includes a fixed cylinder fixedly mounted on the outside of the movable plate, the interior of the fixed cylinder is slidably connected to a rubber piston, the outer middle side of the rubber piston is fixedly connected to a moving rod, and the outer side of the fixed cylinder is connected to two air inlet pipes and a connecting pipe.
[0008] Preferably, one-way valves are installed on the inner sides of the air intake pipe and the connecting pipe, and the conduction directions of the two one-way valves are opposite.
[0009] Preferably, one end of the rigid traction rope is fixedly connected to the outside of the slider along the outer surface of the fixed pulley, the end of the traction plate away from the slider is hinged to the outside of the movable plate, one end of the return spring is fixedly connected to the inner wall of the protective shell, and the other end of the return spring is fixedly connected to the outside of the slider.
[0010] Preferably, the top of the protective shell is movably connected to gear 2 through a bearing, the outer surface of the protective shell is slidably connected to two racks 2, and an electric telescopic rod is installed on the top of the protective shell. The output end of the electric telescopic rod is fixedly connected to one side of one of the racks 2, and the outer side of the rack 2 is fixedly connected to the outer side of the movable plate through a connecting bar, and the outer sides of the two racks 2 are meshed with the outer side of gear 2.
[0011] Preferably, it also includes three legs, the outside of the legs is fixedly connected to a fixed shell, the inside of the fixed shell is movably connected to a worm gear and a worm through a bearing, the outside of the worm gear is connected to gear 1 through a rotating shaft, and the outside of the legs is slidably connected to two adjusting rods, and the inner side of one of the adjusting rods is fixedly connected to rack 1.
[0012] Preferably, the outer side of the worm is meshed with the outer side of the worm wheel, the outer side of the rack 1 is meshed with the outer side of the gear 1, and the top end of the rack 1 is rotatably connected to the outer side of the support.
[0013] Preferably, a plumb bob is fixedly connected to the middle of the bottom end of the support, and a calibration ruler is fixedly connected to the bottom of the support.
[0014] Preferably, one end of the moving rod away from the rubber piston is fixedly connected to the inner wall of the protective shell, and one end of the connecting pipe passes through the outer side of the protective shell and extends to the outside thereof.
[0015] Preferably, a controller is fixedly connected to the outer side of the protective shell, and the controller is electrically connected to the electric telescopic rod.
[0016] The present invention provides a multifunctional measuring device for engineering construction. It has the following beneficial effects: 1. The present invention can automatically and safely store the level probe into the protective shell when the measurement work is suspended or the equipment is idle. The protective shell is made of high-strength, corrosion-resistant materials and has good sealing properties. It can effectively block external dust, moisture, debris and accidental physical impacts, providing all-round protection for the level probe and greatly extending the service life of the probe.
[0017] 2. This invention uses rapid leveling technology to accurately level the equipment in a short time, ensuring that the measuring equipment is always in optimal condition. This avoids measurement errors caused by inaccurate leveling and effectively improves the accuracy of measurement results.
[0018] 3. When the level probe slides out of the protective housing, the built-in dust removal component automatically removes dust from the probe lens, preventing residual dust from affecting measurement accuracy and ensuring the cleanliness and accuracy of the level lens during every measurement. This design not only improves the stability and long-term reliability of the device, but also reduces maintenance costs and operational risks caused by probe contamination, optimizing measurement accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A perspective view of the present invention; Figure 2 Schematic diagram of the support leg structure of the present invention; Figure 3 It is a schematic diagram of the structure of the calibration ruler of the present invention; Figure 4 This is a schematic structural diagram of the gear 2 of the present invention; Figure 5 is a cross-sectional view of the protective housing of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 is a cross-sectional view of the fixing cylinder of the present invention; Figure 8 is a cross-sectional view of a support leg of the present invention; Figure 9 for Figure 1 Enlarged view of point B in the middle.
[0020] Among them, 1. support leg; 2. support; 3. protective shell; 401. plumb bob; 402. fixed shell; 403. rack 1; 404. calibration ruler; 405. worm gear; 406. worm; 407. gear 1; 501. movable plate; 502. level probe; 503. rigid traction rope; 504. movable plate; 505. reset spring; 506. traction plate; 507. slider; 508. guide rod; 601. electric telescopic rod; 602. rack 2; 603. gear 2; 604. connecting strip; 701. fixed cylinder; 702. movable rod; 703. connecting pipe; 704. rubber piston; 705. intake pipe; 8. adjusting rod. DETAILED DESCRIPTION
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. 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 making creative efforts are within the scope of protection of the present invention.
[0022] Please see the attached Figure 1 - Attachment Figure 9 An embodiment of the present invention provides a multifunctional measuring device for engineering construction, including a support 2, a protective shell 3 detachably connected to the top of the support 2, a guide rod 508 fixedly connected to the inside of the protective shell 3, two return springs 505 are sleeved on the outside of the guide rod 508, two sliders 507 are slidably connected to the outside of the guide rod 508, a traction plate 506 is hinged to the outside of the slider 507, two movable plates 501 are slidably connected to one side of the protective shell 3, a rigid traction rope 503 is fixedly connected to the inner side of the movable plate 501, two fixed pulleys are installed on the inner side of the protective shell 3, a movable plate 504 is slidably connected to the inner side of the protective shell 3, a level probe 502 is detachably connected to the outer side of the movable plate 504, a dust removal component is installed on the outer side of the movable plate 504, and the dust removal component is used to remove dust on the lens of the level probe 502. One end of the rigid traction rope 503 is fixedly connected to the outside of the slider 507 along the outer surface of the fixed pulley, and one end of the traction plate 506 away from the slider 507 is hinged to the outside of the movable plate 504, one end of the return spring 505 is fixedly connected to the inner wall of the protective shell 3, and the other end of the return spring 505 is fixedly connected to the outer side of the slider 507.
[0023] Specifically, the support 2 is a basic component of the entire measuring device, and is used to support and fix the protective housing 3 .
[0024] The guide rod 508 is fixedly connected to the inside of the protective shell 3. Its main function is to provide a sliding track for the slider 507 to ensure that the slider 507 can move smoothly along the predetermined direction. The surface of the guide rod 508 is lubricated to reduce friction during the sliding process. The function of the return spring 505 is to provide elastic support when the slider 507 moves and to help the slider 507 return to its initial position when necessary. When the slider 507 slides along the guide rod 508, the return spring 505 will be compressed to store elastic potential energy. When the external force disappears, the return spring 505 will release the elastic potential energy and push the slider 507 back to its initial position.
[0025] One end of the traction plate 506 is hinged to the slider 507, and the other end is connected to the movable plate 504. When the slider 507 moves, the traction plate 506 swings, and its traction force drives the movable plate 504 to move. The design of the traction plate 506 allows the linear motion of the slider 507 to be converted into the movement of the movable plate 504, thereby adjusting the position of the level probe 502.
[0026] Two fixed pulleys are installed inside the protective shell 3. The function of the fixed pulley is to change the traction direction of the rigid traction rope 503. Through the guidance of the fixed pulley, the rigid traction rope 503 can more effectively convert the movement of the movable plate 501 into the sliding of the slider 507, ensuring the smooth operation of the mechanical system.
[0027] The level probe 502 is the core component of the measuring device, used for engineering measurements. It is removably attached to the outside of the movable plate 504, making it easy to install and replace. Driven by the movable plate 504, the level probe 502 can be moved from inside the protective housing 3 to the outside to perform measurements.
[0028] When engineering surveying is required, the movable plate 501 begins to move under the influence of an external drive. The movement of the movable plate 501, through the traction force of the rigid traction rope 503, drives the slider 507 to slide along the outer surface of the guide rod 508. As the slider 507 slides, the return spring 505 is compressed, storing elastic potential energy. Simultaneously, one end of the traction plate 506 swings, and under the traction force of the traction plate 506, the movable plate 504 moves outward. As the movable plate 504 moves, the level probe 502 is pulled out of the protective housing 3, allowing it to perform engineering surveying work.
[0029] This design not only improves the operational convenience and measurement accuracy of the measuring device, but also extends the service life of the level probe 502 and reduces maintenance costs through the protection of the protective shell 3 and the dust removal component.
[0030] The dust removal assembly includes a fixed cylinder 701 fixedly mounted on the outside of the movable plate 504. A rubber piston 704 is slidably connected to the interior of the fixed cylinder 701. A movable rod 702 is fixedly connected to the outer side of the rubber piston 704. The outer side of the fixed cylinder 701 is connected to two air intake pipes 705 and a connecting pipe 703. Both the air intake pipes 705 and the connecting pipe 703 are equipped with check valves, each with opposite conduction directions. The end of the movable rod 702, away from the rubber piston 704, is fixedly connected to the inner wall of the protective housing 3. One end of the connecting pipe 703 extends through the outer side of the protective housing 3 and beyond.
[0031] Specifically, the fixed cylinder 701 is the main shell of the dust removal assembly, and its interior is a hollow structure for accommodating the rubber piston 704 and the movable rod 702. The fixed cylinder 701 is fixedly mounted on the outer side of the movable plate 504 and moves synchronously with the movement of the movable plate 504. The outer side of the fixed cylinder 701 is connected to two air inlet pipes 705 and a connecting pipe 703, which are used for the intake and discharge of air. The function of the rubber piston 704 is to reciprocate within the fixed cylinder 701, and to achieve the intake and discharge of air by changing the air pressure inside the fixed cylinder 701. The rubber piston 704 has good sealing properties and can ensure unidirectional flow of air when the air pressure changes. One end of the movable rod 702 is fixedly connected to the outer middle side of the rubber piston 704, and the other end is fixedly connected to the inner wall of the protective shell 3. The function of the movable rod 702 is to transmit the movement of the movable plate 504 to the rubber piston 704, causing it to reciprocate within the fixed cylinder 701. The air inlet pipe 705 is connected to the interior of the fixed cylinder 701 and is used to introduce external air into the fixed cylinder 701. A one-way valve is installed inside the air inlet pipe 705 to ensure that air can only enter the fixed cylinder 701 from the outside and will not flow in the opposite direction.
[0032] When the movable plate 504 moves, the fixed cylinder 701 will move synchronously. Since one end of the movable rod 702 is fixed to the inner wall of the protective shell 3, the movable rod 702 will drive the rubber piston 704 to move relative to the fixed cylinder 701. When the rubber piston 704 moves outward along the inner wall of the fixed cylinder 701, the air pressure inside the fixed cylinder 701 decreases. At this time, the one-way valve inside the air inlet pipe 705 is closed to prevent the air from flowing in the opposite direction; and the one-way valve inside the connecting pipe 703 is opened, so that the air inside the fixed cylinder 701 is discharged through the connecting pipe 703. The discharged high-pressure air directly acts on the mirror surface of the level probe 502 through the connecting pipe 703, blowing away the dust on the mirror surface, ensuring the cleanliness of the mirror surface and the accuracy of the measurement.
[0033] When the rubber piston 704 moves in the opposite direction, the air pressure inside the fixed cylinder 701 increases. At this time, the one-way valve inside the air inlet pipe 705 opens, allowing outside air to enter the fixed cylinder 701 through the air inlet pipe 705 for replenishment; while the one-way valve inside the connecting pipe 703 closes, preventing air from flowing in the opposite direction.
[0034] In this way, the dust removal component can automatically remove dust on the probe lens to prevent dust residue from affecting measurement accuracy, ensuring the cleanliness and accuracy of the level lens during each measurement.
[0035] The top of the protective shell 3 is movably connected to a gear 2 603 through a bearing, and the outer surface of the protective shell 3 is slidably connected to two rack 2s 602. An electric telescopic rod 601 is installed on the top of the protective shell 3. The output end of the electric telescopic rod 601 is fixedly connected to one side of one of the rack 2s 602. The outer side of the rack 2 602 is fixedly connected to the outer side of the movable plate 501 through a connecting bar 604. The outer sides of the two rack 2s 602 are both meshed with the outer side of the gear 2 603.
[0036] Specifically, gear 2 603 is mounted on the top of the protective housing 3 and is movably connected via a bearing. The use of the bearing ensures that gear 2 603 can rotate smoothly, reduces mechanical friction, and improves the reliability and service life of the system. The electric telescopic rod 601 is mounted on the top of the protective housing 3, and its output end is fixedly connected to one side of one of the racks 2 602. The movement of the electric telescopic rod 601 drives the connected rack 2 602 to move. The telescopic movement of the electric telescopic rod 601 can be precisely controlled by an external control signal, thereby achieving precise drive of the movable plate 501.
[0037] When the position of the movable plate 501 needs to be adjusted, the electric telescopic rod 601 is activated. The extension and retraction of the electric telescopic rod 601 causes the connected rack 2 602 to move. Because rack 2 602 meshes with gear 2 603, the movement of rack 2 602 causes gear 2 603 to rotate. The rotation of gear 2 603 in turn causes the other rack 2 602 to move synchronously, resulting in the two racks 2 602 moving in opposite directions.
[0038] The two racks 602 are pulled by the connecting bar 604 to drive the two movable plates 501 located on the front side of the protective shell 3 to move in opposite directions, and cooperate with subsequent components to slide the level probe 502 out of the interior of the protective shell 3.
[0039] The device further comprises three legs 1. A fixed housing 402 is fixedly connected to the exterior of each leg 1. A worm gear 405 and a worm 406 are movably connected to the interior of the fixed housing 402 via bearings. The exterior of the worm gear 405 is connected to a gear 1 407 via a rotating shaft. Two adjustment rods 8 are slidably connected to the exterior of each leg 1. The interior of one of these adjustment rods 8 is fixedly connected to a rack 1 403. The exterior of the worm 406 meshes with the exterior of the worm gear 405. The exterior of the rack 1 403 meshes with the exterior of the gear 1 407. The top end of the rack 1 403 is rotatably connected to the exterior of the support 2. A plumb bob 401 is fixedly connected to the middle of the bottom end of the support 2. A calibration ruler 404 is fixedly connected to the bottom of the support 2.
[0040] Specifically, the legs 1 form the supporting structure of the entire device. There are three legs arranged in a triangular pattern. This arrangement provides stable support, ensuring the device maintains balance on all terrains. The exterior of the legs 1 is fixedly connected to a fixed housing 402. The internal structure of the fixed housing 402 provides installation space and protection for the core components of the leveling system.
[0041] The outer side of worm gear 405 is connected to gear 1 (407) via a rotating shaft. When worm 406 rotates, it drives worm gear 405, which in turn drives gear 1 (407) via the rotating shaft. This transmission mechanism is self-locking; when worm gear 405 is subjected to external forces, worm 406 will not easily reverse direction, thus ensuring stability after leveling. Gear 1 (407) meshes with rack 1 (403). Rack 1 (403) is fixed to the inside of one of the adjustment rods (8). Rotation of gear 1 (407) drives rack 1 (403) up and down along the outer side of leg 1. The top of rack 1 (403) is rotatably connected to the outer side of support 2, so the movement of rack 1 (403) fine-tunes the angle of support 2. There are two adjustment rods (8), which are slidably connected to the outer side of leg 1. One adjustment rod (8) is fixedly connected to rack 1 (403) on its inner side, while the other adjustment rod (8) provides auxiliary support and stabilizes support 2. Movement of the adjustment rod 8 allows for fine-tuning of the angle of the support 2 to achieve leveling. A plumb bob 401 is a leveling tool that uses gravity to determine whether the support 2 is level by observing the verticality of the plumb line. A calibration ruler 404 provides a scale reference. By observing the position of the plumb bob 401 on the scale, the horizontal state of the device can be accurately determined.
[0042] A controller is fixedly connected to the outside of the protective shell 3 , and the controller is electrically connected to the electric telescopic rod 601 .
[0043] Specifically, the precise control of the electric telescopic rod 601 by the controller makes the operation of the entire device more intelligent and automated.
[0044] Working Principle: When using this device, it includes the following steps: Step 1: unfold the three legs 1 and place the device on the ground using the legs 1. At this time, use the plumb bob 401 and the calibration ruler 404 to determine whether the device is in a horizontal state. If it is not in a horizontal state, rotate the worm 406. At this time, the worm 406 drives the worm wheel 405 to rotate. The worm wheel 405 drives the gear 1 407 to rotate through the rotating shaft. The gear 1 407 drives the rack 1 403 to move. The movement of the rack 1 403 also drives the adjustment rod 8 to move synchronously. At this time, the angle of the support 2 is fine-tuned. The position of the plumb bob 401 on the calibration ruler 404 is again determined to determine whether the device is in a horizontal state. Step 2. After the equipment is leveled, the electric telescopic rod 601 is started to drive one of the racks 2 602 to move. When the rack 2 602 moves, it cooperates with the gear 2 603 to drive the other rack 2 602 to move synchronously. At this time, the rack 2 602 moves the two movable plates 501 located on the front side of the protective shell 3 in opposite directions under the action of the traction force of the connecting bar 604. When the movable plate 501 moves, under the action of the traction force of the rigid traction rope 503, the slider 507 slides along the outer surface of the guide rod 508. During the sliding process of the slider 507, its return spring 505 is in a compressed state. At the same time, one end of the traction plate 506 swings. Under the action of the traction force of the traction plate 506, the movable plate 504 is moved outward until the level probe 502 is moved to the outside of the protective shell 3 for engineering measurement. Step 3. When the movable plate 504 moves, its fixed cylinder 701 will also move synchronously, so that the rubber piston 704 moves relative to the inner wall of the fixed cylinder 701. At this time, the one-way valve inside the air inlet pipe 705 is closed, and the one-way valve inside the connecting pipe 703 is opened, so that the air inside the fixed cylinder 701 is discharged through the connecting pipe 703, and the discharged high-pressure air is discharged into the mirror surface of the level probe 502 to deal with the dust on the mirror surface, thereby avoiding the influence of dust residue on the measurement accuracy and ensuring the cleanliness and accuracy of the lens of the level probe 502 during each measurement. When the rubber piston 704 moves in the opposite direction to the above, the one-way valve inside the air inlet pipe 705 is opened, and the one-way valve inside the connecting pipe 703 is closed, and the outside air enters the interior of the fixed cylinder 701 through the air inlet pipe 705 for replenishment.
[0045] Step 4. After the engineering measurement work is completed, the two movable plates 501 are closed by controlling the movement of the driving end of the electric telescopic rod 601, in conjunction with rack 2 602 and gear 2 603. At this time, the slider 507 moves along the middle side of the guide rod 508 under the elastic force of the reset spring 505, and the movable plate 504 is reset under the traction force of the traction plate 506, and the level probe 502 is moved to the inside of the protective shell 3. This can effectively block external dust, moisture, debris and accidental physical impact, provide all-round protection for the level probe 502, and greatly extend the service life of the probe.
[0046] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A multifunctional measuring device for engineering construction, comprising a support (2), characterized in that: The top of the support (2) is detachably connected to a protective shell (3), the interior of the protective shell (3) is fixedly connected to a guide rod (508), the exterior of the guide rod (508) is sleeved with two return springs (505), the exterior of the guide rod (508) is slidably connected to two sliders (507), the exterior of the slider (507) is hinged with a traction plate (506), one side of the protective shell (3) is slidably connected to two movable plates (501), the interior of the movable plate (501) is fixedly connected to a rigid traction rope (503), two fixed pulleys are installed on the interior of the protective shell (3), the interior of the protective shell (3) is slidably connected to a movable plate (504), the exterior of the movable plate (504) is detachably connected to a level probe (502), and a dust removal component is installed on the exterior of the movable plate (504), the dust removal component is used to remove dust on the lens of the level probe (502).
2. A multifunctional measuring device for engineering construction according to claim 1, characterized in that: The dust removal assembly comprises a fixed cylinder (701) fixedly mounted on the outside of the movable plate (504); a rubber piston (704) is slidably connected to the interior of the fixed cylinder (701); a moving rod (702) is fixedly connected to the outer middle side of the rubber piston (704); and two air inlet pipes (705) and a connecting pipe (703) are connected to the outside of the fixed cylinder (701).
3. A multifunctional measuring device for engineering construction according to claim 2, characterized in that: One-way valves are installed on the inner sides of the air inlet pipe (705) and the connecting pipe (703), and the conduction directions of the two one-way valves are opposite.
4. A multifunctional measuring device for engineering construction according to claim 1, characterized in that: One end of the rigid traction rope (503) is fixedly connected to the outside of the slider (507) along the outer surface of the fixed pulley, and one end of the traction plate (506) away from the slider (507) is hinged to the outside of the movable plate (504), one end of the return spring (505) is fixedly connected to the inner wall of the protective shell (3), and the other end of the return spring (505) is fixedly connected to the outside of the slider (507).
5. The multifunctional measuring device for engineering construction according to claim 1, characterized in that: The top of the protective shell (3) is movably connected to a gear 2 (603) via a bearing, the outer surface of the protective shell (3) is slidably connected to two rack 2s (602), the top of the protective shell (3) is installed with an electric telescopic rod (601), the output end of the electric telescopic rod (601) is fixedly connected to one side of one of the rack 2s (602), the outer side of the rack 2 (602) is fixedly connected to the outer side of the movable plate (501) via a connecting strip (604), and the outer sides of the two rack 2s (602) are both meshed and connected with the outer side of the gear 2 (603).
6. The multifunctional measuring device for engineering construction according to claim 1, characterized in that: The invention also includes three legs (1), wherein the outside of the legs (1) is fixedly connected to a fixed shell (402), the inside of the fixed shell (402) is movably connected to a worm wheel (405) and a worm (406) via a bearing, the outside of the worm wheel (405) is connected to a gear (407) via a rotating shaft, and the outside of the legs (1) is slidably connected to two adjustment rods (8), the inside of one of the adjustment rods (8) is fixedly connected to a rack (403).
7. A multifunctional measuring device for engineering construction according to claim 6, characterized in that: The outer side of the worm (406) is meshed with the outer side of the worm wheel (405), the outer side of the rack 1 (403) is meshed with the outer side of the gear 1 (407), and the top end of the rack 1 (403) is rotatably connected to the outer side of the support (2).
8. The multifunctional measuring device for engineering construction according to claim 1, characterized in that: A plumb bob (401) is fixedly connected to the middle of the bottom end of the support (2), and a calibration ruler (404) is fixedly connected to the bottom of the support (2).
9. The multifunctional measuring device for engineering construction according to claim 2, characterized in that: One end of the moving rod (702) away from the rubber piston (704) is fixedly connected to the inner wall of the protective shell (3), and one end of the connecting tube (703) passes through the outer side of the protective shell (3) and extends to the outside thereof.
10. The multifunctional measuring device for engineering construction according to claim 1, characterized in that: A controller is fixedly connected to the outside of the protective shell (3), and the controller is electrically connected to the electric telescopic rod (601).