A measuring device for construction engineering construction

Abstract

The application discloses a kind of construction engineering construction measuring device, it is related to building engineering construction measurement technical field, including bearing base, the outer surface of bearing base is hinged with three support sleeve, the middle part of three The support sleeve is embedded with support leg, and support sleeve and support leg are adjustably connected by elastic positioning assembly, the bottom surface of bearing base is vertically fixed with stand column.The measuring device for construction engineering construction clamping groove of clamping plate and mounting plate is engaged with, can form all-around limiting to laser range finder, prevent instrument left and right, before and after straying, clamping fixed firm;Protective cover is quickly connected with card slot by buckle and is disassembled, without the aid of tool, convenient operation;Sealing gasket is embedded annular sealing groove and can block assembly gap, effectively block site dust, water vapor erosion laser range finder internal components, reduce equipment failure and scrap frequency, reduce construction solid waste, meet green construction environmental protection requirements.

Description

Technical Field

[0001] This invention relates to the field of construction surveying technology, specifically a surveying device for construction projects. Background Technology

[0002] With the comprehensive implementation of refined construction and green building standardization in the domestic construction industry, construction surveying, as a core process of refined management, has put forward strict requirements on equipment stability, measurement accuracy, dust prevention and environmental protection, low carbon and energy saving, and resource recycling.

[0003] However, existing construction surveying equipment still has certain problems in use:

[0004] For example, a construction engineering surveying device with application number CN202520119213.X includes a triangular base, a rotating block, a telescopic rod, a telescopic cylinder, and a base; the three outer sides of the triangular base are respectively fixedly connected to the rotating block, the lower end of each rotating block is rotatably connected to the corresponding telescopic rod, the lower outer side of each telescopic rod is fitted with a telescopic cylinder, the lower outer side of each telescopic rod is provided with several grooves, the top of the triangular base is fixedly connected to the base, and the top of the base is provided with an inverted T-shaped groove;

[0005] The construction site generates a large amount of dust, mud, and water mist. Conventional laser instruments lack a closed and sealed protective structure, causing dust and water to accumulate on the lenses and sensing elements, resulting in a rapid decline in measurement accuracy, frequent maintenance, and scrapping of the entire machine. This generates a large amount of electronic and metal solid waste, which violates the principles of green construction, solid waste reduction, and resource recycling.

[0006] Therefore, we propose a surveying device for construction projects to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a construction engineering measurement device to solve the problem mentioned in the background art of the lack of a closed and sealed protective structure for construction engineering measurement devices.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a construction engineering measuring device, comprising a bearing base, three support sleeves hinged to the outer surface of the bearing base, support legs embedded in the middle of the three support sleeves, and the support sleeves and support legs being adjustablely connected by an elastic positioning component; a column vertically fixed to the bottom surface of the bearing base, a sliding sleeve slidably fitted onto the outer wall of the column by an up-down adjustment component, three sets of support rods hinged to the outer surface of the sliding sleeve, and the other end of the support rods being hinged and rotatably connected to one side of the support sleeve; a support base plate hinged to the bottom end of the support leg; a fixed seat fixed to the upper surface of the bearing base; a clamping seat connected above the fixed seat by a horizontal angle adjustment component; a bidirectional clamping component provided in the middle of the clamping seat; a laser rangefinder detachably connected above the clamping seat by the bidirectional clamping component; and a protective cover detachably connected to the outer surface of the laser rangefinder, located above the bearing base, by a snap-fit ​​component.

[0009] The above technical solution utilizes a synchronous linkage support mechanism consisting of a sliding sleeve, support rod, and support sleeve. The support legs are locked in sections via an elastic positioning component, and the bottom hinged support plate adapts to various construction surfaces, enabling rapid and stable leveling of the entire machine to ensure high-precision measurement for meticulous construction. The top horizontal angle adjustment component allows for flexible adjustment of the laser rangefinder's horizontal orientation, while the bidirectional threaded rod clamping component enables quick assembly and disassembly of the instrument. An outer snap-fit ​​sealed protective cover isolates dust and moisture from the construction site, reducing equipment wear and solid waste pollution while meeting the requirements of green construction, energy conservation, environmental protection, and precise measurement.

[0010] Preferably, the elastic positioning component includes a plurality of positioning holes formed on the side wall of the support sleeve, a first sliding groove is formed on the outer wall of the support leg, a first spring is fixedly connected to the inner wall of the first sliding groove, and a positioning head that engages with the positioning hole is positioned and connected to the outer end of the first spring.

[0011] Using the above technical solution, pressing the positioning head compresses the first spring, causing it to retract into the first slide groove. This allows the support leg to be pulled out to adjust its extension length. After releasing, the spring rebounds and pushes the positioning head into the corresponding positioning hole of the support sleeve to achieve locking. The segmented extension and retraction of the support leg height can adapt to uneven ground on the construction site, ensuring the measuring device is placed stably and improving measurement accuracy.

[0012] Preferably, the up-down adjustment assembly includes a second sliding groove formed in the middle of the column, an adjustment screw is rotatably connected to the middle of the second sliding groove, and a sliding sleeve is threadedly connected to the adjustment screw and slidably connected to the column. A first knob is fixed to the bottom end of the adjustment screw, and a first locking nut is threadedly sleeved on the outer surface of the lower end of the adjustment screw.

[0013] Using the above technical solution, rotating the first knob drives the adjusting screw to rotate, and relying on the threaded transmission to drive the sliding sleeve to rise and fall vertically along the second sliding groove of the column. Simultaneously pushing and pulling the support rod links the three support sleeves to open and close synchronously, coarsely adjusting the bracket's expansion range. Tightening the first locking nut locks the screw position, quickly completing the overall coarse leveling of the machine, adapting to different site erection requirements, and improving the device's support stability.

[0014] Preferably, the horizontal angle adjustment assembly includes a gear rotatably connected inside the fixed base, a drive shaft is fixedly connected to the middle of the gear, and the top end of the drive shaft is fixedly connected to the bottom of the clamping base.

[0015] Using the above technical solution, rotating the clamping seat can drive the transmission shaft and the bottom gear to rotate synchronously. Relying on gear meshing, the clamping seat can be smoothly and steadily adjusted to a horizontal angle of 360°, thereby changing the measurement orientation of the laser rangefinder, meeting the multi-directional measurement needs of the construction site, and ensuring the flexibility and data stability of precision construction measurement.

[0016] Preferably, a third sliding groove is provided on one side of the fixed seat, a pull rod is passed through the middle of the third sliding groove, a positioning block with gear tooth groove engagement is fixed at the other end of the pull rod, a second spring is sleeved on the outer surface of the pull rod, and the two ends of the second spring are respectively fixedly connected to the inner wall of the third sliding groove and one side of the positioning block.

[0017] Using the above technical solution, pulling the pull rod outward compresses the second spring, causing the positioning block to disengage from the gear tooth groove, allowing the clamping seat to rotate freely to adjust the measurement angle; after releasing the pull rod, the second spring rebounds and pushes the positioning block into the gear tooth groove to lock the gear, preventing the clamping seat from shifting due to construction vibration, ensuring the stability of the laser rangefinder's measurement orientation, and improving the accuracy of construction measurements.

[0018] Preferably, the bottom end of the support leg is rotatably hinged to an adjustment seat, a first through hole is provided on one side of the adjustment seat, a threaded column adapted to and rotatably connected to the first through hole is fixed on the bottom side of the support leg, a second locking nut is threaded on the outer surface of the threaded column and tightly fitted to the outer wall of the adjustment seat, and a support base plate is fixedly installed on the bottom of the adjustment seat, and an anti-slip pad is adhered to the bottom surface of the support base plate.

[0019] Using the above technical solution, the adjusting seat can rotate around the threaded column relative to the supporting leg, adapting to the inclined ground to adjust the contact angle of the supporting base plate. After rotating to the position, tighten the second locking nut to press the adjusting seat to complete the locking. The anti-slip pad at the bottom of the base plate increases the friction with the ground, preventing the device from slipping and shaking, ensuring the overall support of the measuring device is stable, and reducing measurement errors caused by uneven ground.

[0020] Preferably, the bidirectional clamping assembly includes a fourth sliding groove formed in the middle of the clamping seat, a bidirectional threaded rod passing through the middle of the fourth sliding groove, a second knob fixed at one end of the bidirectional threaded rod, two sliders connected symmetrically to the outer surface of the bidirectional threaded rod, a clamping plate fixed at the top of the two sliders, and the threads at both ends of the bidirectional threaded rod having opposite directions.

[0021] Using the above technical solution, rotating the second knob drives the bidirectional threaded rod to rotate, and the reverse threads at both ends drive the sliders on both sides to move synchronously towards or away from each other along the fourth slide groove, thereby driving the clamping plate to clamp or release the laser rangefinder, realizing the quick assembly and disassembly of the instrument and its centered positioning. It is compatible with different specifications of measuring equipment, and the clamping is firm and not easy to loosen, ensuring the stability of the measurement operation.

[0022] Preferably, the outer end of the bidirectional threaded rod is threaded with a third locking nut, and the inner wall of the third locking nut is tightly fitted and connected to the outer wall of the clamping seat.

[0023] Using the above technical solution, after adjusting the clamping distance of the clamping plate, tighten the third locking nut to make it fit tightly against the outer wall of the clamping seat and lock the bidirectional threaded rod. This prevents the threaded rod from rotating and loosening on its own due to construction vibration, and securely clamps the laser rangefinder, avoiding instrument deviation during the measurement process that could affect the accuracy of precision construction measurements.

[0024] Preferably, the bottom of the laser rangefinder is fixed with a mounting plate, and the mounting plate has clamping grooves on both sides, and the clamping plate and the clamping grooves are correspondingly engaged and connected.

[0025] Using the above technical solution, the clamping plate is inserted into the clamping grooves on both sides of the mounting plate to form a limiting fit, increasing the clamping contact area, restricting the laser rangefinder from moving back and forth and left and right, making the clamping and positioning more reliable, effectively resisting construction vibration, and avoiding measurement deviation caused by instrument displacement.

[0026] Preferably, the snap-fit ​​assembly includes a plurality of snap-fit ​​slots annularly formed on the outer surface of the support base, and a plurality of snap fasteners corresponding to and engaging with the snap-fit ​​slots are fixed annularly at the bottom of the protective cover.

[0027] Using the above technical solution, the protective cover can be locked in place by aligning the bottom buckle with the slot on the support base and pressing it. The protective cover can be quickly removed by pulling the buckle upwards. No tools are required for disassembly and assembly. The protective cover can cover the laser rangefinder to block construction dust and water mist from corroding the lens, protect the measuring components, extend the service life of the equipment, and reduce construction waste generated by equipment scrapping, which meets the requirements of green construction and environmental protection.

[0028] Preferably, the outer surface of the support base is provided with an annular sealing groove, the bottom of the protective cover is fixed with a sealing gasket that is tightly adapted and connected to the sealing groove, and the outer surface of the sealing gasket is provided with a second through hole adapted to the buckle.

[0029] Using the above technical solution, after the protective cover buckle is inserted into the slot, the bottom sealing gasket is embedded in the annular sealing groove to form a tight fit. The second through hole allows the buckle to pass through without interfering with the assembly. The sealing gasket seals the gaps to prevent dust and moisture from the construction site from entering the interior of the protective cover, protecting the laser rangefinder components, reducing equipment failure and wear, reducing solid waste from discarded equipment, and meeting the requirements of green and environmentally friendly construction.

[0030] Compared with the prior art, the beneficial effects of the present invention are: 1. The clamping grooves of the clamping plate and the mounting plate can form an all-round limit for the laser rangefinder, preventing the instrument from moving left and right or forward and backward, and ensuring a secure clamping and fixation; the protective cover can be quickly attached and disassembled by buckles and slots without the need for tools, making operation convenient; the sealing gasket embedded in the annular sealing groove can seal the assembly gaps, effectively preventing construction dust and moisture from corroding the internal components of the laser rangefinder, reducing the frequency of equipment failure and scrapping, reducing construction solid waste, and meeting the requirements of green construction and environmental protection. 2. The clamping plates are synchronously centered and clamped by the reverse thread of the bidirectional threaded rod. The clamping plates and the mounting plate are locked in place by the groove, which is compatible with various specifications of laser rangefinders and has strong versatility. With the third locking nut locking the threaded rod, it can resist the vibration of the construction site, prevent the instrument from loosening and shifting, effectively eliminate measurement deviations, and stably ensure the high-precision measurement standards required for fine construction. The whole assembly and disassembly do not require special tools, and the operation is simple and efficient. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of the main body of the present invention; Figure 2 This is a schematic diagram of the front structure of the main body of the present invention; Figure 3 This is a schematic diagram of the support leg height adjustment structure of the present invention; Figure 4 This is a schematic diagram of the elastic positioning structure of the present invention; Figure 5 This is a schematic diagram of the support base plate angle adjustment structure of the present invention; Figure 6 This is a schematic diagram of the support rod adjustment structure of the present invention; Figure 7 This is a schematic diagram of the horizontal angle adjustment and locking structure of the present invention; Figure 8 This is a schematic diagram of the bidirectional clamping structure of the present invention; Figure 9 This is a schematic diagram of the laser rangefinder structure of the present invention; Figure 10 This is a schematic diagram of the installation structure of the protective cover of the present invention.

[0032] In the diagram: 1. Support base; 2. Support sleeve; 3. Support leg; 4. Positioning hole; 5. First slide groove; 6. First spring; 7. Positioning head; 8. Column; 9. Second slide groove; 10. Adjusting screw; 11. First knob; 12. Slide sleeve; 13. Support rod; 14. First locking nut; 15. Adjusting seat; 16. First through hole; 17. Threaded column; 18. Second locking nut; 19. Support base plate; 20. Anti-slip pad; 21. Fixed seat; 22. 23. Gear; 24. Drive shaft; 25. Third slide groove; 26. Pull rod; 27. Positioning block; 28. Second spring; 29. ​​Clamping seat; 20. Fourth slide groove; 31. Bidirectional threaded rod; 32. Second knob; 33. Slider; 34. Clamping plate; 35. Third locking nut; 36. Laser rangefinder; 37. Mounting plate; 38. Clamping groove; 39. Protective cover; 40. Slot; 41. Sealing groove; 42. Buckle; 43. Sealing gasket; 44. Second through hole. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Please see Figures 1-10 This invention provides a technical solution: a measuring device for construction engineering, comprising a support base 1, three support sleeves 2 hinged to the outer surface of the support base 1, and support legs 3 embedded in the middle of the three support sleeves 2, and the support sleeves 2 and support legs 3 are adjustablely connected by an elastic positioning component. The elastic positioning component includes a plurality of positioning holes 4 formed in the side wall of the support sleeves 2, a first sliding groove 5 formed in the outer wall of the support leg 3, a first spring 6 fixedly connected to the inner wall of the first sliding groove 5, and a positioning head 7 positioned and connected to the outer end of the first spring 6 and engaged with the positioning hole 4.

[0035] By pressing the positioning head 7, the first spring 6 inside the first slide groove 5 is compressed and retracted inward to disengage from the positioning hole 4 on the side wall of the support sleeve 2. This allows the support leg 3 to be pulled out to adjust its length extending out of the support sleeve 2. After releasing the positioning head 7, the first spring 6 rebounds and pushes the positioning head 7 into the corresponding positioning hole 4 to complete the locking. In this way, the support height of the three support legs 3 can be adjusted in sections to adapt to different ground conditions such as unevenness, softness, and inclination at the construction site. This keeps the bearing base 1 horizontal and stable, avoids equipment shaking and deviation, ensures high precision of laser ranging operations, and meets the requirements of precision construction measurement.

[0036] A column 8 is vertically fixed to the bottom surface of the support base 1. A sliding sleeve 12 is slidably sleeved on the outer wall of the column 8 through an up-down adjustment assembly. Three sets of support rods 13 are hinged to the outer surface of the sliding sleeve 12, and the other end of the support rod 13 is hinged and rotatably connected to one side of the support sleeve 2. The up-down adjustment assembly includes a second sliding groove 9 opened in the middle of the column 8. An adjusting screw 10 is rotatably connected to the middle of the second sliding groove 9. The sliding sleeve 12 is threadedly connected to the adjusting screw 10 and slidably connected to the column 8. A first knob 11 is fixed to the bottom end of the adjusting screw 10, and a first locking nut 14 is threadedly sleeved on the outer surface of the lower end of the adjusting screw 10.

[0037] Rotating the first knob 11 causes the adjusting screw 10 in the second slide groove 9 of the column 8 to rotate, and the sliding sleeve 12 is driven to slide vertically along the outer wall of the column 8 by the thread transmission. The sliding sleeve 12 simultaneously pulls the three sets of support rods 13 to swing. The other end of the support rod 13 is hinged to the traction support sleeve 2 to open or close synchronously, so as to uniformly adjust the expansion range of the three support sleeves 2. After the adjustment is completed, tighten the first locking nut 14 to lock the adjusting screw 10 to limit the displacement of the sliding sleeve 12, so as to realize the rapid synchronous coarse leveling of the whole machine without the need to operate each support leg separately, which greatly shortens the erection and leveling time, stabilizes the support base 1, and lays the foundation for subsequent high-precision measurement.

[0038] A support base plate 19 is hinged to the bottom end of the support leg 3. The bottom end of the support leg 3 is rotatable and hinged to an adjustment seat 15. A first through hole 16 is provided on one side of the adjustment seat 15. A threaded post 17 that is adapted to and rotatably connected to the first through hole 16 is fixed to the bottom side of the support leg 3. A second locking nut 18 that is tightly fitted to the outer wall of the adjustment seat 15 is threaded on the outer surface of the threaded post 17. The support base plate 19 is fixedly installed on the bottom of the adjustment seat 15. An anti-slip pad 20 is adhered to the bottom surface of the support base plate 19.

[0039] The adjusting seat 15 is hinged to the threaded post 17 at the bottom of the support leg 3 via its first through hole 16. The angle of the adjusting seat 15 can be freely rotated according to the inclined ground of the construction site, so that the bottom fixed support plate 19 is completely in contact with the ground. After the angle is adjusted, the second locking nut 18 on the outside of the threaded post 17 is tightened to lock the adjusting seat 15 tightly against the outer wall of the adjusting seat 15 to prevent deflection. The anti-slip pad 20 attached to the bottom surface of the support plate 19 increases the frictional resistance between the support and the ground, preventing the support leg 3 from slipping or sinking. This comprehensively improves the overall support stability of the bearing base 1, eliminates measurement offset errors caused by uneven ground, and meets the high-precision measurement requirements of fine construction.

[0040] A fixed base 21 is fixed to the upper surface of the support base 1. A clamping seat 28 is connected to the upper part of the fixed base 21 via a horizontal angle adjustment assembly. The horizontal angle adjustment assembly includes a gear 22 rotatably connected inside the fixed base 21. A drive shaft 23 is fixedly connected to the middle of the gear 22, and the top end of the drive shaft 23 is fixedly connected to the bottom of the clamping seat 28. A third slide groove 24 is provided on one side of the fixed base 21. A pull rod 25 passes through the middle of the third slide groove 24. A positioning block 26 is fixed to the other end of the pull rod 25 and engaged with the gear 22. A second spring 27 is sleeved on the outer surface of the pull rod 25, and the two ends of the second spring 27 are fixedly connected to the inner wall of the third slide groove 24 and one side of the positioning block 26, respectively.

[0041] Pulling the lever 25 in the third slide groove 24 outward causes the positioning block 26 to compress the second spring 27 and disengage from the tooth groove of the gear 22. At this time, the clamping seat 28 can be rotated. The clamping seat 28 drives the gear 22 inside the fixed seat 21 to rotate synchronously through the transmission shaft 23, freely adjusting the horizontal measurement position of the laser rangefinder 35. After releasing the lever 25, the second spring 27 rebounds and pushes the positioning block 26 to re-engage in the tooth groove of the gear 22, locking the gear 22 and the transmission shaft 23, limiting the clamping seat 28 from rotating due to construction vibration, stabilizing the laser measurement orientation, adapting to multi-directional and multi-angle measurement operations on the construction site, and ensuring continuous and accurate measurement data for fine construction.

[0042] A bidirectional clamping assembly is provided in the middle of the clamping base 28, and a laser rangefinder 35 is detachably connected to the top of the clamping base 28 via the bidirectional clamping assembly. The bidirectional clamping assembly includes a fourth slide groove 29 formed in the middle of the clamping base 28, and a bidirectional threaded rod 30 is transversely inserted in the middle of the fourth slide groove 29. A second knob 31 is fixed to one end of the bidirectional threaded rod 30. The outer surface of the bidirectional threaded rod 30 is symmetrical and threadedly connected to two sliders 32. A clamping plate 33 is fixed to the top of the two sliders 32, and the threads at both ends of the bidirectional threaded rod 30 have opposite directions of rotation. A third locking nut 34 is threadedly fitted to the outer end of the bidirectional threaded rod 30, and the inner wall of the third locking nut 34 is tightly fitted to the outer wall of the clamping base 28.

[0043] Rotating the second knob 31 causes the bidirectional threaded rod 30 with opposite threads at both ends inside the fourth slide groove 29 to rotate, driving the sliders 32 on both sides to move synchronously towards or away from each other along the slide groove, causing the clamping plate 33 to clamp or release the laser rangefinder 35. The clamping plate 33 can be inserted into the clamping groove 37 of the mounting plate 36 at the bottom of the laser rangefinder 35 to achieve limited fixation, adapting to different specifications of measuring instruments. After clamping in place, tighten the third locking nut 34 at the outer end of the bidirectional threaded rod 30 to make it tightly adhere to the outer wall of the clamping seat 28 to lock the bidirectional threaded rod 30, preventing the threaded rod from rotating and loosening due to construction vibration, firmly fixing the laser rangefinder 35, avoiding instrument displacement and errors during measurement, and ensuring the accuracy of precision construction measurement.

[0044] A protective cover 38 is detachably connected to the outer surface of the laser rangefinder 35, located above the support base 1, via a snap-fit ​​assembly. A mounting plate 36 is fixed to the bottom of the laser rangefinder 35, with clamping grooves 37 on both sides of the mounting plate 36, and clamping plates 33 engaging with the clamping grooves 37. The snap-fit ​​assembly includes several grooves 39 annularly formed on the outer surface of the support base 1, and several buckles 41 annularly fixed to the bottom of the protective cover 38, which engage with the grooves 39. An annular sealing groove 40 is formed on the outer surface of the support base 1, and a sealing gasket 42 is fixed to the bottom of the protective cover 38, tightly fitted and connected to the sealing groove 40. A second through hole 43, matching the buckles 41, is formed on the outer surface of the sealing gasket 42.

[0045] The mounting plate 36 at the bottom of the laser rangefinder 35 has clamping grooves 37 on both sides. The clamping plate 33 on the clamping base 28 engages with the clamping grooves 37 to limit and fix the instrument. When assembling the protective cover 38, the buckle 41 at the bottom of the protective cover 38 passes through the matching second through hole 43 on the sealing gasket 42 and is engaged with the grooves 39 distributed in annularly around the outer periphery of the bearing base 1 to complete quick assembly and disassembly. At the same time, the sealing gasket 42 at the bottom of the protective cover 38 is embedded in the annular sealing groove 40 of the bearing base 1 to form a close sealing structure, sealing the assembly gaps, isolating dust and moisture from the construction site from entering the interior of the protective cover 38, protecting the lens and electronic components of the laser rangefinder 35, reducing equipment failure and wear, extending service life, reducing the generation of solid waste from discarded equipment, and meeting the requirements of green building energy conservation and environmental protection construction.

[0046] Working principle: For this type of construction engineering measuring device, rotating the first knob 11 simultaneously opens the three sets of support sleeves 2 via the adjusting screw 10, sliding sleeve 12, and support rod 13. Pressing the positioning head 7 compresses the first spring 6, allowing the support leg 3 to be pulled out to adjust its height and locked into the positioning hole 4. The bottom adjustment seat 15 of the support leg 3 can rotate to adapt to the ground, and the anti-slip pad 20 prevents slipping and sinking, thus completing the stable erection of the bearing base 1. Pulling the pull rod 25 compresses the second spring 27 to unlock the positioning block 26, allowing the gear 22 and transmission shaft 23 to rotate and drive the clamping seat 28. Adjust the horizontal orientation of the laser rangefinder 35, loosen the pull rod 25, and the spring returns to lock the angle; rotate the second knob 31 to drive the bidirectional threaded rod 30 to drive the two side clamps 33 to snap into the mounting plate 36 clamping groove 37 to fix the laser rangefinder 35, and tighten the third locking nut 34 to prevent loosening; the protective cover 38 is connected to the bearing base 1 clamping groove 39 by the buckle 41, and the sealing gasket 42 is embedded in the sealing groove 40 to form a sealed dustproof structure. The whole device achieves stable and high-precision measurement by relying on multi-level adjustment, elastic locking, and sealing protection, reducing equipment wear and meeting the requirements of green construction.

[0047] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surveying device for construction engineering, comprising a support base (1), characterized in that: The outer surface of the bearing base (1) is hinged with three support sleeves (2), and a support leg (3) is embedded in the middle of the three support sleeves (2). The support sleeves (2) and the support legs (3) are adjustablely connected by an elastic positioning component. A column (8) is vertically fixed on the bottom surface of the bearing base (1). A sliding sleeve (12) is slidably fitted on the outer wall of the column (8) through an up-down adjustment component. Three sets of support rods (13) are hinged to the outer surface of the sliding sleeve (12), and the other end of the support rod (13) is hinged and rotatably connected to one side of the support sleeve (2). The bottom end of the support leg (3) is hinged to a support base plate (19). The upper end of the bearing base (1) is fixed with a fixed seat (21). The fixed seat (21) is connected to a clamping seat (28) above it via a horizontal angle adjustment component. A bidirectional clamping component is provided in the middle of the clamping seat (28). A laser rangefinder (35) is detachably connected to the upper part of the clamping seat (28) via the bidirectional clamping component. A protective cover (38) is detachably connected to the outer surface of the laser rangefinder (35) above the bearing base (1) via a snap-fit ​​component.

2. The construction surveying device according to claim 1, characterized in that: The elastic positioning component includes several positioning holes (4) opened on the side wall of the support sleeve (2), and a first sliding groove (5) is opened on the outer wall of the support leg (3). A first spring (6) is fixedly connected to the inner wall of the first sliding groove (5), and a positioning head (7) that engages with the positioning hole (4) is positioned at the outer end of the first spring (6).

3. A construction surveying device according to claim 1, characterized in that: The up-down adjustment assembly includes a second slide groove (9) opened in the middle of the column (8), an adjustment screw (10) is rotatably connected to the middle of the second slide groove (9), and a sliding sleeve (12) is threadedly connected to the adjustment screw (10) and slidably connected to the column (8). A first knob (11) is fixed at the bottom end of the adjustment screw (10), and a first locking nut (14) is threadedly sleeved on the outer surface of the lower end of the adjustment screw (10).

4. A construction surveying device according to claim 1, characterized in that: The horizontal angle adjustment assembly includes a gear (22) rotatably connected inside the fixed base (21), a transmission shaft (23) is fixedly connected to the middle of the gear (22), and the top of the transmission shaft (23) is fixedly connected to the bottom of the clamping base (28).

5. A construction surveying device according to claim 4, characterized in that: A third groove (24) is provided on one side of the fixed base (21). A pull rod (25) is passed through the middle of the third groove (24). A positioning block (26) with gear (22) engaging is fixed to the other end of the pull rod (25). A second spring (27) is sleeved on the outer surface of the pull rod (25). The two ends of the second spring (27) are fixedly connected to the inner wall of the third groove (24) and one side of the positioning block (26), respectively.

6. A construction surveying device according to claim 1, characterized in that: The bottom end of the support leg (3) is rotatable and hinged to an adjustment seat (15). A first through hole (16) is provided on one side of the adjustment seat (15). A threaded column (17) adapted to rotate and connect with the first through hole (16) is fixed on the bottom side of the support leg (3). A second locking nut (18) is threaded on the outer surface of the threaded column (17) and tightly fitted to the outer wall of the adjustment seat (15). The support base plate (19) is fixedly installed on the bottom of the adjustment seat (15). An anti-slip pad (20) is adhered to the bottom surface of the support base plate (19).

7. A construction surveying device according to claim 1, characterized in that: The bidirectional clamping assembly includes a fourth slide groove (29) opened in the middle of the clamping seat (28). A bidirectional threaded rod (30) is transversely inserted in the middle of the fourth slide groove (29). A second knob (31) is fixed at one end of the bidirectional threaded rod (30). The outer surface of the bidirectional threaded rod (30) is symmetrical and threadedly connected to two sliders (32). A clamping plate (33) is fixed at the top of the two sliders (32). The threads at both ends of the bidirectional threaded rod (30) are opposite. A third locking nut (34) is threadedly fitted at the outer end of the bidirectional threaded rod (30). The inner wall of the third locking nut (34) is tightly fitted to the outer wall of the clamping seat (28).

8. A construction surveying device according to claim 1, characterized in that: The bottom of the laser rangefinder (35) is fixed with a mounting plate (36), and the mounting plate (36) has clamping grooves (37) on both sides, and the clamping plate (33) and the clamping grooves (37) are correspondingly engaged and connected.

9. A surveying device for construction engineering according to claim 1, characterized in that: The snap-fit ​​assembly includes a bearing base (1) with a plurality of snap-fit ​​slots (39) circumferentially opened on the outer surface, and the bottom of the protective cover (38) is fixed with a plurality of snap-fit ​​buckles (41) that are corresponding to and snap-fitted to the snap-fit ​​slots (39).

10. A construction surveying device according to claim 1, characterized in that: The outer surface of the support base (1) is provided with an annular sealing groove (40), and the bottom of the protective cover (38) is fixed with a sealing gasket (42) that is tightly adapted to the sealing groove (40), and the outer surface of the sealing gasket (42) is provided with a second through hole (43) that is adapted to the buckle (41).

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