Foundation pit measuring device and method for building foundation construction

Abstract

The invention provides a foundation pit measuring device and method for building foundation construction, and relates to the technical field of foundation pit depth measurement, the foundation pit measuring device comprises a base, a take-up and pay-off mechanism, a measuring rope and a range finder, and further comprises a limiting mechanism arranged at the bottom of the base and used for guiding the vertically moving measuring rope, the limiting mechanism comprises a cleaning part arranged on one side of the bottom of the base and a guiding part arranged on the other side of the bottom of the base, the supporting mechanisms are arranged on the two sides of the base and can adjust the transverse position and the horizontal angle of the base, and the extruding mechanism is arranged at the top of the base. The extruding device is used for extruding the measuring rope so that the measuring rope can be straightened in the vertical moving process to slow down the lowering speed of the measuring rope. The device can limit and guide the lowered measuring rope, prevents the measuring rope from shaking to affect the depth measurement of the foundation pit, and can perform depth measurement on each position in the foundation pit to improve the accuracy of measured data.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit depth measurement, and in particular to a foundation pit measurement device and method for building foundation construction. Background Art

[0002] The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane dimensions. Large foundation pits even use underground continuous walls and column-type bored cast-in-place pile linkages to prevent the outer soil layer from collapsing. If there is no impact on nearby buildings, the well point method can be used to lower the groundwater level, and slope reduction and open excavation can be used. The foundation pit of urban bridge projects is mainly used for the construction of piers, abutments and expanded foundations, and is generally divided into two categories: unsupported and supported. The drilled foundation pit needs to be measured in depth by equipment to match the expected size of the construction project.

[0003] After searching, the application number CN202322414466.3 discloses a foundation pit depth detection equipment for foundation pit monitoring, including a cart; a fixed frame is connected to the end face of the cart, and a cleaning device is arranged on the front face of the fixed frame; the driving motor is started by the controller, so that the driving motor drives the collecting roller to rotate, thereby causing the collecting roller to drive the measuring rope to retract, and while starting the driving motor, the water pump is started by the controller, so that water is transported through the water pipe, so that the atomizing nozzle sprays water onto the surface of the retracting measuring rope, so that the stains on the surface of the measuring rope are sprayed off by the water, and the remaining part is wiped clean by two sets of cleaning brushes, and the water stains on the surface of the measuring rope are dried by a dryer, so that the cable is cleaned to avoid affecting the normal use next time, thereby reducing the workload of the workers and improving work efficiency.

[0004] Application No. CN202420284294.4 discloses a construction foundation pit depth detection device, including a first fixed column and a second fixed column, a measuring device body and a connecting plate are fixedly installed between the first fixed column and the second fixed column respectively, the measuring device body is located above the connecting plate, a horizontal level bubble meter is fixedly installed on the surface of the first fixed column, and a calibration mechanism is symmetrically fixedly installed on the side wall of the first fixed column, the calibration mechanism includes side plates, two side plates have storage grooves running through them, and longitudinal level bubble meters are fixedly installed in both storage grooves, the calibration mechanism also includes a circular groove, a square groove, an L-shaped groove, a slide groove, a screw rod, a slider and a support block, by connecting the second fixed column and the first fixed column with the connecting plate, the first fixed column and the second fixed column are always kept in a parallel state, so it is only necessary to calibrate the first fixed column to complete the calibration of the measuring device body, and it is relatively convenient to adjust.

[0005] The device for measuring foundation pits in the prior art can adjust the angle of the measuring device and clean the measuring rope. However, during use, the measuring rope will shake when being lowered because the distance between the rangefinder at the bottom of the measuring rope and the retracting mechanism is too long, thereby affecting the measurement effect. In addition, some foundation pits have a large diameter and uneven internal heights, but the measuring equipment cannot measure the depth of different positions inside the foundation pit, thus affecting the accuracy of the foundation pit depth measurement data. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the existing foundation pit measurement device cannot guide and limit the lowered measuring rope and cannot measure the depth of various positions inside the foundation pit.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A foundation pit measuring device for building foundation construction comprises a base, a retractable mechanism arranged on the top of the base, a measuring rope arranged at the output end of the retractable mechanism, and a distance meter arranged at the bottom of the measuring rope, and also comprises: A limiting mechanism is arranged at the bottom of the base for guiding the vertically moving measuring rope, wherein the limiting mechanism comprises a cleaning component arranged at one side of the bottom of the base and a guiding component arranged at the other side of the bottom of the base; A supporting mechanism, which is arranged on both sides of the base and can adjust the lateral position and horizontal angle of the base; The squeezing mechanism is arranged on the top of the base and is used to squeeze the measuring rope so that the measuring rope is straightened during the vertical movement to slow down the lowering speed of the measuring rope.

[0008] As a preferred technical solution of the present application, the retractable mechanism includes a bracket arranged on the top of the base, support plates arranged on both sides of the top of the bracket, a retractable cylinder rotatably arranged between the two support plates, and a first motor arranged outside a support plate and connected to the end of the retractable cylinder, and the measuring rope is arranged on the retractable cylinder.

[0009] As a preferred technical solution of the present application, the cleaning component includes a first connecting plate arranged at the bottom of the base, a second motor arranged at the bottom of the first connecting plate, a first screw rod arranged on the output shaft of the second motor, a mounting plate slidably arranged on the inner wall of the first connecting plate and threadedly connected to the first screw rod, and a cleaning sleeve rotatably arranged on the outside of the mounting plate.

[0010] As a preferred technical solution of the present application, the guiding component includes a second connecting plate arranged at the bottom of the base, a second screw rod rotatably arranged on the inner bottom wall of the second connecting plate, a pull plate slidably arranged on the inner wall of the second connecting plate and threadedly connected to the second screw rod, a guide sleeve arranged on the pull plate, and a first belt transmitted between the first screw rod and the second screw rod, wherein a transmission component is provided between the mounting plate and the pull plate, which can drive the cleaning sleeve to rotate when the mounting plate and the pull plate move relative to each other.

[0011] As a preferred technical solution of the present application, the transmission component includes a reel arranged on the top of the mounting plate and rotated by a torsion spring shaft, an active bevel gear arranged at the end of the reel, and a driven bevel gear and a gear coaxially arranged at the top and bottom of the mounting plate. A pull rope is provided between the reel and the pull plate, and a tooth groove meshing with the gear is provided on the outside of the cleaning sleeve.

[0012] As a preferred technical solution of the present application, the supporting mechanism includes two symmetrically arranged fixed seats, movable wheels arranged at the bottom of the fixed seats, telescopic plates slidably arranged on both sides of the base, a first cylinder arranged on both sides of the top of the fixed seat, a piston column arranged at the output end of the first cylinder and movably connected to the bottom of the telescopic plate, and a second cylinder arranged on both sides of the top of the base and whose output shaft is connected to the telescopic plate.

[0013] As a preferred technical solution of the present application, a pulling mechanism is also provided on the top of the base, and the pulling mechanism includes a stud rotatably arranged on the inner wall of one side of the bracket, a sliding frame threadedly arranged on the outside of the stud and slidably connected to the top of the base, and a fixed sleeve arranged on the end of the sliding frame away from the stud, wherein a linkage component is provided between the stud and the retractable cylinder, which can drive the stud to rotate reciprocally when the measuring rope is retracted and released.

[0014] As a preferred technical solution of the present application, the extrusion mechanism includes curved plates slidably arranged on both sides of the bracket, a square sleeve arranged between two opposite curved plates, a rotating plate rotatably arranged inside the square sleeve, a fixed cylinder arranged outside the rotating plate, a pressure column slidably arranged inside the fixed cylinder and passing through the rotating plate, a spring arranged between one side of the pressure column and the fixed cylinder, and a pressure pad arranged on the other side of the pressure column, wherein the side wall of the bracket is provided with a driving component for driving the two curved plates to move relative to each other.

[0015] As a preferred technical solution of the present application, a water replenishing mechanism is also provided at the bottom of the base, and the water replenishing mechanism includes a water tank arranged at the bottom of the base, a water inlet valve arranged at the bottom of the water tank, a rotating sleeve arranged outside the mounting plate and rotatably connected to the cleaning sleeve, and a water pipe arranged between the rotating sleeve and the water tank.

[0016] The present invention also discloses a method for using a foundation pit measurement device for building foundation construction, comprising the following steps: S1: First, move the equipment to the foundation pit, start the first motor to drive the retractable cylinder to rotate, and release the measuring rope. At this time, the measuring rope will fall into the foundation pit under the action of gravity and cooperate with the rangefinder to complete the measurement of the foundation pit depth; S2: When the measuring rope is lowered, the second motor can be started to work, and the first belt can be used to drive the first screw and the second screw to rotate, thereby driving the cleaning sleeve and the guide sleeve to move relative to each other along the outside of the measuring rope, so as to limit and guide the measuring rope, so that the measuring rope can vertically enter the foundation pit; S3: When the measuring rope is lowered, the driving component can also drive the curved plates on both sides of the bracket to move relatively and gradually approach each other, thereby driving the pressure pad at the end of the pressure column to squeeze the measuring rope, and controlling the squeezing force so that the measuring rope can be straightened during the normal lowering process, thereby slowing down the lowering speed of the measuring rope and preventing the measuring rope from shaking; S4: When the ground is bumpy, the first cylinders on the top of the fixed seat can be started to adjust the horizontal angle of the base, and the second cylinder can be started to push the telescopic plate to slide to both sides to increase the overall horizontal length of the device. At this time, the device is moved back and forth to adjust the position of the base relative to the foundation pit and measure the depth of different positions inside the foundation pit; S5: When the measurement is finished, the measuring rope is rolled up and stored through the retracting mechanism. At this time, the cleaning sleeve can be driven to rotate through the transmission component, so the cleaning sleeve can rotate and move vertically relative to the measuring rope. At the same time, the water replenishing mechanism is used to spray water onto the recovered measuring rope, so that some sludge attached to the outside of the measuring rope can be cleaned thoroughly.

[0017] 1. Compared with the prior art, the present invention has the following beneficial effects: Move the equipment to the foundation pit, and through the set retracting and releasing mechanism, the measuring rope can be lowered into the foundation pit, and the depth of the foundation pit can be measured in conjunction with the rangefinder. At the same time, the first motor can be started to work, and the cleaning sleeve and the guide sleeve can be driven to move relative to each other along the outside of the measuring rope through the set first screw rod, first belt, second screw rod, pull plate and mounting plate, so that the moving down measuring rope can be limited and guided to prevent the measuring rope from shaking during the downward movement and affecting the foundation pit depth measurement. Moreover, when the measuring rope is retracted after the measurement, the cleaning sleeve can be driven to rotate through the set reel, active bevel gear, driven bevel gear, gear and tooth groove, so that the cleaning sleeve can rotate relative to the measuring rope and move vertically, so as to facilitate the thorough cleaning of the sludge attached to the outside of the measuring rope.

[0018] 2. Through the support mechanism, when it is necessary to measure the depth of different positions inside the foundation pit, the second cylinder can be started first to push the telescopic plates on both sides of the base to slide outward, thereby increasing the overall length of the device, and through the mutual cooperation of multiple first cylinders, the horizontal angle of the base can be adjusted to facilitate the base to be in a horizontal state even on bumpy ground, and then the position of the base is moved and adjusted by the moving wheels, so that the measuring rope and rangefinder at the bottom of the base can measure the depth of various positions inside the foundation pits of different diameters, thereby improving the accuracy of foundation pit data measurement.

[0019] 3. In the process of lowering the measuring rope, the driving component can drive the curved plates on both sides of the bracket to move relative to each other and gradually approach each other. At this time, the spring can drive the pressure pad on the pressure column to resist the outside of the measuring rope to clamp the measuring rope, and the strength of the spring will not clamp the measuring rope to death, so that the measuring rope can be straightened when it is lowered, thereby slowing down the lowering speed of the measuring rope, preventing the measuring rope from shaking due to instantaneous downward movement, and improving the stability of the movement of the measuring rope. In addition, when the measurement is completed and the measuring rope is reeled in, the linkage component set will drive the stud to rotate back and forth, thereby driving the fixed sleeve to move back and forth to pull the measuring rope, so that the measuring rope can be evenly reeled in on the reel, and the measuring rope squeezed by the pressure pad will be in a straightened state, so that the measuring rope can also be tightly reeled in on the outside of the reel, which can not only prevent the measuring rope from loosening, but also increase the reeling amount of the reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the overall structure diagram of the present invention; Figure 2 It is a bottom view structural diagram of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a structural diagram of the extrusion mechanism of the present invention; Figure 5 It is a structural diagram of the driving component of the present invention; Figure 6 It is a structural diagram of the pulling mechanism of the present invention; Figure 7 It is a structural diagram of the linkage components of the present invention; Figure 8 It is a structural diagram of the limiting mechanism of the present invention; Fig. 9 It is a structural diagram of the water replenishment mechanism of the present invention; Fig.10 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Fig.11 For the present invention Figure 4 Enlarged structural diagram at point B in the middle.

[0021] Indicated in the figure: 1. Base; 101. Bracket; 2. Measuring rope; 201. Distance meter; 3. Retracting and releasing mechanism; 301. Support plate; 302. Retracting and releasing cylinder; 303. First motor; 4. Cleaning component; 401. First connecting plate; 402. Second motor; 403. First screw rod; 404. Mounting plate; 405. Cleaning sleeve; 4051. Tooth groove; 5. Guide component; 501. Second connecting plate; 502. Second screw rod; 503. Pull plate; 504. Guide sleeve; 505. First belt; 6. Transmission component; 601. Reel; 602. Active bevel gear; 603. Driven bevel gear; 604. Gear; 605. Pull rope; 7. Water replenishing mechanism; 701. Water tank; 702. Water inlet valve; 703. Water pipe; 8. Pulling mechanism; 801. Stud; 802. Sliding frame ;803, fixed sleeve;9, linkage component;901, first box body;902, first rotating rod;903, second rotating rod;904, complete gear;905, torsion spring;906, incomplete gear;907, second belt;10, extrusion mechanism;1001, curved plate;1002, square sleeve;1003, rotating plate;1004, fixed cylinder;1005, pressure column;1006, spring;1007, pressure pad;11, driving component;1101, second box body;1102, screw;1103, turning handle;1104, driven bevel gear;1105, driving bevel gear;12, supporting mechanism;1201, fixed seat;1202, moving wheel;1203, first cylinder;1204, piston column;1205, telescopic plate;1206, second cylinder. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0023] like Figures 1 to 6 As shown, this embodiment proposes a foundation pit measurement device for building foundation construction, including a base 1, a retractable mechanism 3 arranged on the top of the base 1, a measuring rope 2 arranged at the output end of the retractable mechanism 3, and a rangefinder 201 arranged at the bottom of the measuring rope 2, and also includes a limiting mechanism, a supporting mechanism 12 and a squeezing mechanism 10. The limiting mechanism is arranged at the bottom of the base 1, and is used to guide the vertically moving measuring rope 2. The limiting mechanism includes a cleaning component 4 arranged on one side of the bottom of the base 1 and a guiding component 5 arranged on the other side of the bottom of the base 1. The supporting mechanism 12 is arranged on both sides of the base 1, and can adjust the lateral position and horizontal angle of the base 1. The squeezing mechanism 10 is arranged on the top of the base 1, and is used to squeeze the measuring rope 2 so that the measuring rope 2 is straightened during the vertical movement to slow down the lowering speed of the measuring rope 2. First, move the base 1 to the top of the foundation pit, and then release the measuring rope 2 through the set retracting mechanism 3. The measuring rope 2 and the rangefinder 201 will fall into the foundation pit under the action of gravity. Because a pressure sensor is set at the bottom of the rangefinder 201, when the bottom of the rangefinder 201 contacts the bottom of the foundation pit, the pressure sensor will control the rangefinder 201 to stop detection, so that the depth of the surface of the foundation pit with the bottom of the foundation pit can be measured. In the process of the measuring rope 2 being lowered, the cleaning component 4 and the guide component 5 can simultaneously limit and guide the measuring rope 2, so that the measuring rope 2 can move vertically downward without causing the measuring rope 2 to shake, thereby improving the stability of the movement of the measuring rope 2 and avoiding affecting the detection of the depth of the foundation pit. In addition, the squeezing mechanism 10 can also slightly squeeze the measuring rope 2. The measuring rope 2 is kept in a taut state when being lowered, thereby slowing down the downward movement speed of the measuring rope 2, preventing the measuring rope 2 from shaking due to instantaneous downward movement, and further improving the stability of the movement of the measuring rope 2. In addition, the position of the base 1 relative to the foundation pit can be adjusted by the provided support mechanism 12, so as to facilitate the adjustment of the depth of each position inside the foundation pit, thereby improving the accuracy of the foundation pit depth measurement data. Finally, after the foundation pit measurement is completed, the measuring rope 2 is retracted by the retracting mechanism 3. At this time, the cleaning component 4 provided can also clean some of the sludge attached to the outside of the measuring rope 2 thoroughly, keeping the equipment tidy and convenient for subsequent use. In addition, because the squeezing mechanism 10 squeezes the measuring rope 2 to make it in a taut state, the measuring rope 2 will be tightly rolled up to prevent the measuring rope 2 from loosening.

[0024] Among them, the retracting mechanism 3 includes a bracket 101 arranged on the top of the base 1, support plates 301 arranged on both sides of the top of the bracket 101, a retracting cylinder 302 rotatably arranged between the two support plates 301, and a first motor 303 arranged outside a support plate 301 and connected to the end of the retracting cylinder 302, and the measuring rope 2 is arranged on the retracting cylinder 302; after the measuring device is in place, the first motor 303 can be started to drive the retracting cylinder 302 to rotate, and the measuring rope 2 is released to make the measuring rope 2 fall into the foundation pit to cooperate with the rangefinder 201 to measure the depth of the foundation pit. When the measurement is completed, the first motor 303 drives the retracting cylinder 302 to reverse, so that the measuring rope 2 can be rolled up and the rangefinder 201 can be pulled out of the foundation pit, and slots for moving the measuring rope 2 are opened at the bottom of the bracket 101 and the base 1.

[0025] Specifically, Figure 2 and Figure 6As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, the cleaning component 4 includes a first connecting plate 401 arranged at the bottom of the base 1, a second motor 402 arranged at the bottom of the first connecting plate 401, a first screw rod 403 arranged on the output shaft of the second motor 402, a mounting plate 404 slidably arranged on the inner wall of the first connecting plate 401 and threadedly connected to the first screw rod 403, and a cleaning sleeve 405 rotatably arranged outside the mounting plate 404; The guide component 5 includes a second connecting plate 501 arranged at the bottom of the base 1, a second screw rod 502 rotatably arranged on the inner bottom wall of the second connecting plate 501, a pull plate 503 slidably arranged on the inner wall of the second connecting plate 501 and threadedly connected to the second screw rod 502, a guide sleeve 504 arranged on the pull plate 503, and a first belt 505 transmitted between the first screw rod 403 and the second screw rod 502, wherein a transmission component 6 is provided between the mounting plate 404 and the pull plate 503, which can drive the cleaning sleeve 405 to rotate when the mounting plate 404 and the pull plate 503 move relative to each other; The transmission component 6 includes a reel 601 which is rotatably arranged on the top of the mounting plate 404 through a torsion spring shaft, a driving bevel gear 602 which is arranged at the end of the reel 601, a driven bevel gear 603 and a gear 604 which are coaxially arranged at the top and bottom of the mounting plate 404, a pull rope 605 is arranged between the reel 601 and the pull plate 503, and a tooth groove 4051 which meshes with the gear 604 is arranged outside the cleaning sleeve 405; Before using the measuring device, the measuring rope 2 needs to be passed through the cleaning sleeve 405 and the guide sleeve 504 in sequence. Therefore, when the measuring rope 2 is lowered, the second motor 402 is started to drive the first screw rod 403 to rotate. The first screw rod 403 will drive the second screw rod 502 to rotate through the first belt 505. Because the threads on the outside of the first screw rod 403 and the second screw rod 502 are in opposite directions, the first screw rod 403 and the second screw rod 502 will respectively drive the mounting plate 404 and the pull plate 503 to move vertically relative to each other, thereby driving the cleaning sleeve 405 and the guide sleeve 504 to move vertically outside the measuring rope 2, which is convenient for guiding and limiting the measuring rope 2 to prevent the measuring rope 2 from shaking and deviating and affecting the foundation pit measurement. Moreover, when the pull plate 503 moves back and forth, it will also pull the pull rope 605 back and forth. When the pull rope 605 is pulled out of the reel 601, it will drive the reel 601 to rotate. When the pull rope 605 is released, the torsion spring shaft will It will drive the reel 601 to reverse and reset, so that the gear 604 can be driven to rotate back and forth through the active bevel gear 602 and the driven bevel gear 603, thereby cooperating with the tooth groove 4051 to drive the cleaning sleeve 405 to rotate back and forth, so the cleaning sleeve 405 can also rotate back and forth while moving vertically back and forth relative to the measuring rope 2. Under the action of friction, the measuring rope 2 can be kept in a vertical state, further improving the guiding effect of the measuring rope 2. In addition, when the measuring rope 2 is reeled in at the end of the foundation pit depth measurement, the cleaning sleeve 405 that moves back and forth and rotates relative to the measuring rope 2 can not only guide and limit the measuring rope 2, but also scrape off some of the sludge attached to the outside of the measuring rope 2, keeping the measuring rope 2 clean and tidy for subsequent use. In addition, a protective shell can be installed on the top of the mounting plate 404 to shield and protect the transmission component 6 to prevent foreign objects from touching the transmission component 6 and affecting the normal operation of the equipment.

[0026] In addition, a water replenishment mechanism 7 is also provided at the bottom of the base 1, and the water replenishment mechanism 7 includes a water tank 701 arranged at the bottom of the base 1, a water inlet valve 702 arranged at the bottom of the water tank 701, a rotating sleeve arranged outside the mounting plate 404 and rotatably connected to the cleaning sleeve 405, and a water pipe 703 arranged between the rotating sleeve and the water tank 701, wherein a water pump connected to the water pipe 703 at the output end is arranged inside the water tank 701, and a connecting groove is arranged inside the rotating sleeve, and a water inlet hole is arranged on the outer wall of the cleaning sleeve 405 located inside the connecting groove, and the cleaning sleeve 405 is provided with a water pump. A water storage chamber is provided inside the sleeve 405, and a drainage hole is provided on the inner wall of the cleaning sleeve 405; the water tank 701 can be filled with water in advance through the water inlet valve 702. When the foundation pit measurement is completed and the measuring rope 2 is reeled in, the water pump provided inside the water tank 701 can also be started to inject water into the connecting groove inside the rotating sleeve through the water pipe 703. The water continues to enter the cavity through the water inlet hole, and finally sprays onto the surface of the measuring rope through the drainage hole on the inner wall of the cleaning sleeve 405, thereby facilitating the cleaning sleeve 405 to scrape off the sludge on the outside of the measuring rope 2 more thoroughly.

[0027] like Figure 5 and Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the support mechanism 12 includes two symmetrically arranged fixed seats 1201, a moving wheel 1202 arranged at the bottom of the fixed seat 1201, a telescopic plate 1205 slidably arranged on both sides of the base 1, a first cylinder 1203 arranged on both sides of the top of the fixed seat 1201, a piston column 1204 arranged at the output end of the first cylinder 1203 and movably connected to the bottom of the telescopic plate 1205, and a second cylinder 1206 arranged on both sides of the top of the base 1 and whose output shaft is connected to the telescopic plate 1205, wherein an adjustment frame is provided at the bottom of the telescopic plate 1205, and a ball bearing rotatably connected to the adjustment frame is provided at the top of the piston column 1204; By starting the first cylinder 1203, the height of the base 1 can be adjusted. When the base 1 is moved to the top of the foundation pit, the first cylinder 1203 is started again to drive the base 1 to move one end distance toward the inside of the foundation pit, so that the retractable cylinder 302 is flush with the surface of the foundation pit, which is convenient for the measuring rope 2 and the rangefinder 201 to accurately measure the depth of the foundation pit, and by starting each first cylinder 1203 to cooperate with each other, the horizontal angle of the base 1 can be adjusted, which is convenient for adjusting the base 1 to a horizontal state on a bumpy road surface. A level is also provided on the front side surface of the base 1. By observing the bubbles inside the level, it can be judged whether the base 1 is leveled. At this time, by starting the second cylinder 1206, the telescopic plates 1205 on both sides of the base 1 can be driven to slide out to both sides, thereby adjusting the horizontal length of the base 1, so that the equipment can adapt to foundation pits of different diameters. Then, the base 1 is moved by the moving wheel 1202, so that the base 1 can be located at various positions above the foundation pit, so that the depth of various positions inside the foundation pit can be measured, thereby improving the accuracy of the measurement data.

[0028] like Figure 5 and Figure 6 As shown, as a preferred embodiment, on the basis of the above-mentioned manner, further, a pulling mechanism 8 is further provided on the top of the base 1, and the pulling mechanism 8 includes a stud 801 rotatably arranged on the inner wall of one side of the bracket 101, a sliding frame 802 threadedly arranged on the outside of the stud 801 and slidably connected to the top of the base 1, and a fixing sleeve 803 arranged on the end of the sliding frame 802 away from the stud 801, wherein a linkage component 9 is provided between the stud 801 and the retractable cylinder 302, which can drive the stud 801 to reciprocate when the measuring rope 2 is retracted; The squeezing mechanism 10 includes a curved plate 1001 slidably arranged on both sides of a bracket 101, a square sleeve 1002 arranged between two opposite curved plates 1001, a rotating plate 1003 rotatably arranged inside the square sleeve 1002, a fixed cylinder 1004 arranged outside the rotating plate 1003, a pressure column 1005 slidably arranged inside the fixed cylinder 1004 and passing through the rotating plate 1003, a spring 1006 arranged between one side of the pressure column 1005 and the fixed cylinder 1004, and a pressure pad 1007 arranged on the other side of the pressure column 1005, wherein a driving component 11 for driving the two curved plates 1001 to move relative to each other is provided on the side wall of the bracket 101; When the measuring rope 2 is being retracted, the stud 801 can be driven to rotate forward and backward through the provided linkage component 9, and the stud 801 will drive the sliding frame 802 to move back and forth on the top of the base 1, and then the measuring rope 2 can be pulled back and forth through the fixed sleeve 803, so that the measuring rope 2 can be evenly wound around various positions outside the retracting cylinder 302, to prevent the measuring rope 2 from being concentratedly wound around one position outside the retracting cylinder 302 and causing the two sides of the measuring rope 2 to collapse. In addition, the retracting amount of the measuring rope 2 by the retracting cylinder 302 can be increased. When the retracting mechanism 3 lowers the measuring rope 2, the curved plates 1001 on both sides of the bracket 101 can be driven to move relative to each other through the provided driving component 11, thereby driving the pressure pad 1007 on the pressure column 1005 to press against the measuring rope 2 to clamp the measuring rope 2, because the spring 100 The elastic force of 6 is limited and will not drive the pressure column 1005 and the pressure pad 1007 to clamp the measuring rope 2. Therefore, the measuring rope 2 will only be in a stretched state and can be retracted and released normally. Moreover, when the measuring rope 2 is pulled back and forth, the pressure pad 1007 will rotate inside the square sleeve 1002 through the rotating plate 1003, so as not to affect the squeezing of the measuring rope 2. Therefore, the friction force of the pressure pad 1007 can slow down the speed of the downward movement of the measuring rope 2, and prevent the measuring rope 2 from falling and shaking instantly, thereby further improving the stability of the movement of the measuring rope 2. Moreover, when the measuring rope 2 is reeled in, because the measuring rope 2 is clamped in a taut state, the measuring rope 2 will also be tightly reeled in the outside of the reel-in tube 302, which can not only prevent the measuring rope 2 from loosening, but also further increase the reeling amount of the reel-in tube 302.

[0029] It should be noted that the linkage component 9 includes a first box body 901 arranged outside the bracket 101, a first rotating rod 902 and a second rotating rod 903 rotatably arranged inside the first box body 901, a complete gear 904 arranged outside the first rotating rod 902, a torsion spring 905 sleeved on the rod wall of the first rotating rod 902, an incomplete gear 906 arranged on the rod wall of the second rotating rod 903, and a second belt 907 arranged between the second rotating rod 903 and the end of the retractable cylinder 302. One end of the first rotating rod 902 passes through the first box body 901 and the bracket 101 and is connected to the stud 801; when the retractable cylinder is driven by the first motor 303, When 302 rotates to retract and release the measuring rope 2, the retracting cylinder 302 will drive the second rotating rod 903 and the incomplete gear 906 to rotate through the second belt 907. When the incomplete gear 906 rotates to the toothed side and contacts with the complete gear 904, it will drive the complete gear 904 and the first rotating rod 902 to rotate and twist the torsion spring 905. When the incomplete gear 906 rotates to the toothless side and contacts with the complete gear 904, the torsion spring 905 will drive the first rotating rod 902 to reverse and reset. Therefore, when the retracting cylinder 302 rotates, it can drive the stud 801 to rotate back and forth, and then drive the sliding frame 802 and the fixed sleeve 803 to move back and forth to pull the measuring rope 2.

[0030] The driving component 11 includes a second box body 1101 arranged outside the bracket 101, screws 1102 rotatably arranged on both sides of the second box body 1101, a turning handle 1103 rotatably arranged on the side of the second box body 1101 away from the bracket 101, an active bevel gear 1105 arranged at one end of the turning handle 1103 located inside the second box body 1101, and a driven bevel gear 1104 arranged at one end of the screw 1102 located inside the second box body 1101, and the curved plates 1001 on both sides of the bracket 101 are threadedly connected to the two screws 1102 respectively; when the measuring rope 2 is retracted or released, the turning handle 1103 can be rotated to drive the active bevel gear 1105 to rotate, and the active bevel gear 1105 will drive the two screws 1102 with the driven bevel gears 1104 to rotate, thereby driving the curved plate 1001 to move and squeeze the measuring rope 2.

[0031] The working principle of the present invention is as follows: first, the base 1 is moved to the top of the foundation pit, and then the measuring rope 2 is released through the arranged retracting and releasing mechanism 3, and the measuring rope 2 and the rangefinder 201 will fall into the foundation pit under the action of gravity. Because a pressure sensor is arranged at the bottom of the rangefinder 201, when the bottom of the rangefinder 201 contacts the bottom of the foundation pit, the pressure sensor will control the rangefinder 201 to stop detecting, so that the depth of the surface of the foundation pit with the bottom of the foundation pit can be measured. In the process of the measuring rope 2 being lowered, the second motor 402 is started to drive the first screw rod 403 to rotate, and the first screw rod 403 will drive the second screw rod 502 to rotate through the first belt 505. Because the external threads of the first screw rod 403 and the second screw rod 502 have opposite rotation directions, at this time, the first screw rod 403 and the second screw rod 502 will respectively drive the mounting plate 404 and the pulling plate 503 to move vertically relative to each other. When the pull plate 503 moves back and forth, it will also pull the pull rope 605 back and forth, and when the pull rope 605 is pulled out of the reel 601, it will drive the reel 601 to rotate. When the pull rope 605 is released, the torsion spring shaft will drive the reel 601 to reverse and reset. Therefore, the active bevel gear 602 and the driven bevel gear 603 can drive the gear 604 to rotate back and forth, thereby cooperating with the tooth groove 4051 to drive the cleaning sleeve 405 to rotate back and forth. Therefore, the cleaning sleeve 405 can reciprocate while moving vertically back and forth relative to the measuring rope 2. Under the action of friction, the measuring rope 2 can be kept in a vertical state, further improving the guiding effect of the measuring rope 2.

[0032] Moreover, by starting the first cylinder 1203, the height of the base 1 can be adjusted. When the base 1 is moved above the foundation pit, the first cylinder 1203 is started again to drive the base 1 to move a distance toward the inside of the foundation pit, so that the retractable cylinder 302 is flush with the surface of the foundation pit, which is convenient for the measuring rope 2 and the rangefinder 201 to accurately measure the depth of the foundation pit. In addition, by starting each first cylinder 1203 to cooperate with each other, the horizontal angle of the base 1 can also be adjusted, which is convenient for adjusting the base 1 to a horizontal state on a bumpy road surface. At this time, by starting the second cylinder 1206, the telescopic plates 1205 on both sides of the base 1 can be driven to slide out to both sides, and then the horizontal length of the base 1 can be adjusted, which is convenient for the equipment to adapt to foundation pits of different diameters. Then, the base 1 is moved by the moving wheel 1202, so that the base 1 can be located at various positions above the foundation pit, so that the depth of various positions inside the foundation pit can be measured, thereby improving the accuracy of the measurement data.

[0033] When the retracting and releasing mechanism 3 is lowering the measuring rope 2, the curved plates 1001 on both sides of the bracket 101 can also be driven to move relative to each other through the provided driving component 11, thereby driving the pressure pad 1007 on the pressure column 1005 to press against the measuring rope 2 to clamp the measuring rope 2. Because the elastic force of the spring 1006 is limited, it will not drive the pressure column 1005 and the pressure pad 1007 to clamp the measuring rope 2. Therefore, the measuring rope 2 will only be in a straightened state and can be retracted and released normally. Therefore, the friction force of the pressure pad 1007 can slow down the speed of the downward movement of the measuring rope 2 to prevent the measuring rope 2 from shaking when it falls instantly, thereby further improving the stability of the movement of the measuring rope 2. In addition, when the measuring rope 2 is reeled in after the foundation pit depth measurement is completed, the cleaning sleeve 405 that moves back and forth and rotates relative to the measuring rope 2 can not only guide and limit the measuring rope 2, but also scrape off some of the sludge attached to the outside of the measuring rope 2, so as to keep the measuring rope 2 clean and tidy for subsequent use.

[0034] Finally, when the measurement is completed and the measuring rope 2 is wound up, the linkage component 9 can be used to drive the stud 801 to rotate forward and backward, and the stud 801 will drive the sliding frame 802 to move back and forth on the top of the base 1, and then the measuring rope 2 is pulled back and forth through the fixed sleeve 803, so that the measuring rope 2 can be evenly wound around various positions outside the retracting cylinder 302, preventing the measuring rope 2 from being concentratedly wound around one position outside the retracting cylinder 302 and causing the two sides of the measuring rope 2 to collapse. In addition, the winding amount of the measuring rope 2 by the retracting cylinder 302 can be increased. Because the measuring rope 2 is clamped in a taut state, the measuring rope 2 will also be tightly wound around the outside of the retracting cylinder 302, which can not only prevent the measuring rope 2 from loosening, but also further increase the winding amount of the retracting cylinder 302.

[0035] The present invention also discloses a method for using a foundation pit measurement device for building foundation construction, comprising the following steps: S1: First, move the device to the foundation pit, start the first motor 303 to drive the retracting cylinder 302 to rotate, and release the measuring rope 2. At this time, the measuring rope 2 will fall into the foundation pit under the action of gravity and cooperate with the rangefinder 201 to complete the measurement of the foundation pit depth; S2: When the measuring rope 2 is lowered, the second motor 402 can be started to work, and the first belt 505 can be used to drive the first screw rod 403 and the second screw rod 502 to rotate, thereby driving the cleaning sleeve 405 and the guide sleeve 504 to move relative to each other along the outside of the measuring rope 2, so as to limit and guide the measuring rope 2, so that the measuring rope 2 can vertically enter the inside of the foundation pit; S3: When the measuring rope 2 is lowered, the driving component 11 can also drive the curved plates 1001 on both sides of the bracket 101 to move relatively and gradually approach each other, thereby driving the pressure pad 1007 at the end of the pressure column 1005 to squeeze the measuring rope 2, and control the squeezing force so that the measuring rope 2 can be straightened during the normal lowering process, thereby slowing down the lowering speed of the measuring rope 2 and preventing the measuring rope 2 from shaking; S4: When the ground is bumpy, the first cylinders 1203 on the top of the fixed seat 1201 can be activated to adjust the horizontal angle of the base 1, and the second cylinder 1206 can be activated to push the telescopic plate 1205 to slide toward both sides to increase the overall horizontal length of the device. At this time, the device is moved back and forth to adjust the position of the base 1 relative to the foundation pit, and the depth of different positions inside the foundation pit is measured; S5: When the measurement is finished, the measuring rope 2 is rolled up and stored through the retracting mechanism 3. At this time, the transmission component 6 can drive the cleaning cover 405 to rotate, so that the cleaning cover 405 can rotate and move vertically relative to the measuring rope 2. At the same time, the water replenishing mechanism 7 is used to spray water onto the recovered measuring rope 2, so that some sludge attached to the outside of the measuring rope 2 can be cleaned thoroughly.

[0036] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; all technical solutions and improvements that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A foundation pit measurement device for building foundation construction, comprising a base (1), a retractable mechanism (3) arranged on the top of the base (1), a measuring rope (2) arranged at the output end of the retractable mechanism (3), and a distance meter (201) arranged at the bottom of the measuring rope (2), characterized in that: Also includes: A limiting mechanism disposed at the bottom of the base (1) for guiding a vertically moving measuring rope (2), the limiting mechanism comprising a cleaning component (4) disposed at one side of the bottom of the base (1) and a guiding component (5) disposed at the other side of the bottom of the base (1); A support mechanism (12), wherein the support mechanism (12) is arranged on both sides of the base (1) and is capable of adjusting the lateral position and horizontal angle of the base (1); A squeezing mechanism (10) is arranged on the top of the base (1) and is used to squeeze the measuring rope (2) so that the measuring rope (2) is straightened during vertical movement to slow down the lowering speed of the measuring rope (2).

2. A foundation pit measuring device for building foundation construction according to claim 1, characterized in that: The retractable mechanism (3) comprises a bracket (101) arranged on the top of the base (1), support plates (301) arranged on both sides of the top of the bracket (101), a retractable cylinder (302) rotatably arranged between the two support plates (301), and a first motor (303) arranged outside one of the support plates (301) and connected to the end of the retractable cylinder (302), and the measuring rope (2) is arranged on the retractable cylinder (302).

3. A foundation pit measurement device for building foundation construction according to claim 1, characterized in that: The cleaning component (4) comprises a first connecting plate (401) arranged at the bottom of the base (1), a second motor (402) arranged at the bottom of the first connecting plate (401), a first screw rod (403) arranged at the output shaft of the second motor (402), a mounting plate (404) slidably arranged on the inner wall of the first connecting plate (401) and threadedly connected to the first screw rod (403), and a cleaning sleeve (405) rotatably arranged outside the mounting plate (404).

4. A foundation pit measuring device for building foundation construction according to claim 3, characterized in that: The guide component (5) comprises a second connecting plate (501) arranged at the bottom of the base (1), a second screw rod (502) rotatably arranged on the inner bottom wall of the second connecting plate (501), a pull plate (503) slidably arranged on the inner wall of the second connecting plate (501) and threadedly connected to the second screw rod (502), a guide sleeve (504) arranged on the pull plate (503), and a first belt (505) transmission-arranged between the first screw rod (403) and the second screw rod (502), wherein a transmission component (6) is arranged between the mounting plate (404) and the pull plate (503) and is capable of driving the cleaning sleeve (405) to rotate when the mounting plate (404) and the pull plate (503) move relative to each other.

5. A foundation pit measurement device for building foundation construction according to claim 4, characterized in that: The transmission component (6) comprises a reel (601) arranged on the top of the mounting plate (404) to rotate via a torsion spring shaft, a driving bevel gear (602) arranged at the end of the reel (601), and a driven bevel gear (603) and a gear (604) coaxially arranged at the top and bottom of the mounting plate (404); a pull rope (605) is arranged between the reel (601) and the pull plate (503); and a tooth groove (4051) meshing with the gear (604) is arranged on the outside of the cleaning sleeve (405).

6. A foundation pit measurement device for building foundation construction according to claim 1, characterized in that: The support mechanism (12) comprises two symmetrically arranged fixed seats (1201), moving wheels (1202) arranged at the bottom of the fixed seats (1201), telescopic plates (1205) slidably arranged on both sides of the base (1), a first cylinder (1203) arranged on both sides of the top of the fixed seat (1201), a piston column (1204) arranged at the output end of the first cylinder (1203) and movably connected to the bottom of the telescopic plate (1205), and a second cylinder (1206) arranged on both sides of the top of the base (1) and having an output shaft connected to the telescopic plate (1205).

7. A foundation pit measurement device for building foundation construction according to claim 2, characterized in that: The top of the base (1) is also provided with a pulling mechanism (8), the pulling mechanism (8) comprising a stud (801) rotatably arranged on the inner wall of one side of the bracket (101), a sliding frame (802) threadedly arranged on the outside of the stud (801) and slidably connected to the top of the base (1), and a fixing sleeve (803) arranged at an end of the sliding frame (802) away from the stud (801), wherein a linkage component (9) is provided between the stud (801) and the retractable cylinder (302) and can drive the stud (801) to reciprocate when the measuring rope (2) is retracted or released.

8. A foundation pit measurement device for building foundation construction according to claim 7, characterized in that: The squeezing mechanism (10) comprises curved plates (1001) slidably arranged on both sides of a bracket (101), a square sleeve (1002) arranged between two opposite curved plates (1001), a rotating plate (1003) rotatably arranged inside the square sleeve (1002), a fixed cylinder (1004) arranged outside the rotating plate (1003), a pressure column (1005) slidably arranged inside the fixed cylinder (1004) and passing through the rotating plate (1003), a spring (1006) arranged between one side of the pressure column (1005) and the fixed cylinder (1004), and a pressure pad (1007) arranged on the other side of the pressure column (1005), wherein a driving component (11) for driving the two curved plates (1001) to move relative to each other is provided on the side wall of the bracket (101).

9. A foundation pit measurement device for building foundation construction according to claim 1, characterized in that: A water replenishment mechanism (7) is also provided at the bottom of the base (1), the water replenishment mechanism (7) comprising a water tank (701) arranged at the bottom of the base (1), a water inlet valve (702) arranged at the bottom of the water tank (701), a rotating sleeve arranged outside the mounting plate (404) and rotatably connected to the cleaning sleeve (405), and a water pipe (703) arranged between the rotating sleeve and the water tank (701).

10. A method for using a foundation pit measurement device for building foundation construction according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: firstly, the device is moved to the foundation pit, the first motor (303) is started to drive the retracting cylinder (302) to rotate, and the measuring rope (2) is released. At this time, the measuring rope (2) falls into the foundation pit under the action of gravity and cooperates with the rangefinder (201) to complete the measurement of the foundation pit depth; S2: When the measuring rope (2) is lowered, the second motor (402) can be started to work, and the first belt (505) can be used to drive the first screw rod (403) and the second screw rod (502) to rotate, thereby driving the cleaning sleeve (405) and the guide sleeve (504) to move relative to each other along the outside of the measuring rope (2), so that the measuring rope (2) can be limited and guided, so that the measuring rope (2) can be vertically inserted into the foundation pit; S3: When the measuring rope (2) is lowered, the driving component (11) can also drive the curved plates (1001) on both sides of the bracket (101) to move relatively and gradually approach each other, thereby driving the pressure pad (1007) at the end of the pressure column (1005) to squeeze the measuring rope (2), and controlling the squeezing force so that the measuring rope (2) can be straightened during the normal lowering process, thereby slowing down the lowering speed of the measuring rope (2) and preventing the measuring rope (2) from shaking; S4: When the ground is uneven, the first cylinders (1203) on the top of the fixed seat (1201) can be activated to adjust the horizontal angle of the base (1), and the second cylinders (1206) can be activated to push the telescopic plate (1205) to slide toward both sides to increase the overall horizontal length of the device. At this time, the device is moved back and forth to adjust the position of the base (1) relative to the foundation pit, and the depth of different positions inside the foundation pit is measured; S5: When the measurement is finished, the measuring rope (2) is rolled up and stored by the retracting mechanism (3). At this time, the cleaning sleeve (405) can be driven to rotate by the transmission component (6), so that the cleaning sleeve (405) can rotate and move vertically relative to the measuring rope (2). At the same time, the water replenishing mechanism (7) is used to spray water onto the recovered measuring rope (2), so that the sludge attached to the outside of the measuring rope (2) can be completely cleaned.

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