A building site foundation pit slope correction device and a method of using the same

Abstract

The application relates to a building site foundation pit slope correction device and a using method thereof. The device comprises a beam frame, a measuring assembly is arranged above the beam frame, a side wall of one end of the beam frame is fixedly installed with a level assembly, the bottom surface of one end of the beam frame is fixedly connected with a supporting module, the measuring assembly comprises a cross rod, one end of the supporting module is rotationally sleeved with a shaft rod three, and the other end of the cross rod is rotationally sleeved with a first shaft rod. The first laser lamp and the second laser lamp are arranged to irradiate the slope foot position together, so that the values of the slope foot length l and the slope height h1 are calculated, the slope value i = h1\l is calculated, and in use, the first laser lamp and the second laser lamp are controlled to irradiate the slope foot simultaneously, the influence of the slope condition on the measurement is reduced, the device has a wide application range, and the precision is high.

Description

Technical Field

[0001] This invention relates to a construction site foundation pit construction technology, specifically a construction site foundation pit slope correction device and its usage method. Background Technology

[0002] A building foundation pit is used to lay the foundation for a building at the beginning of construction. The quality of the foundation pit's design directly affects the subsequent overall construction process and even the building's safety. To prevent the foundation pit from becoming unstable, workers will measure and check the slope of the foundation pit in real time during the excavation process.

[0003] The current mainstream methods for slope measurement at construction sites are plumb bob, set square, and level. Plumb bob and set square are less accurate, while level is more accurate but requires workers to carry the level back and forth, which is too dependent on the operator's skill and is also cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a slope correction device for construction site foundation pits and its usage method, so as to solve the problems of low accuracy and inconvenient operation of current foundation pit slope measurement.

[0005] This invention is implemented as follows: A slope correction device for a construction site foundation pit includes a beam frame. A measuring component is disposed above the beam frame. A leveling component is fixedly installed on one side wall of one end of the beam frame. A support module is fixedly connected to the bottom surface of one end of the beam frame. The measuring component includes a crossbar. A third shaft is rotatably sleeved on one end of the crossbar, and a first shaft is rotatably sleeved on the other end of the crossbar. A second shaft is rotatably sleeved at the middle position of one side wall of the crossbar. A fourth shaft is rotatably sleeved on one side wall of the crossbar located on the side of the second shaft. The second shaft and the fourth shaft... A second pulley is fixedly sleeved on the outer wall of one end of each rod. A first pulley is fixedly sleeved on the outer wall of one end of each of the first and third shafts. A first laser light is fixedly connected to the other end of the first shaft, and a second laser light is fixedly connected to the other end of the second shaft. A first belt is driven between the two first pulleys, and a second belt is driven between the two second pulleys. A tensioning module for tensioning the first belt is fixedly connected to one side wall of the crossbar. A knob is fixedly sleeved on the other end of each of the fourth and third shafts. A positioning module is provided on the top surface of one end of the beam frame.

[0006] Turning one knob drives the second shaft to rotate via the fourth shaft, adjusting the illumination angle of the second laser light so that it illuminates the foot of the slope. Simultaneously, the angle b is obtained according to the scale on the reference plate. Turning another knob drives the first shaft to rotate via the first belt, adjusting the illumination angle of the first laser light so that it also illuminates the foot of the slope, aligning the illumination points of the first and second laser lights. The angle a is read using another knob and the corresponding scale on the reference plate. Since the distance L between the first and second shafts is fixed and pre-measured, the value of distance L is known. The distance h2 between the second laser light and the ground at the top of the slope is measured using a ruler or other measuring tools. The slope length l and slope height h1 are calculated, yielding the slope value i = h1 / l. This method is more convenient and accurate for measurement and use.

[0007] Two slides are fixed to the outer wall of the crossbar, and arc frames are fixed to the top surface of the beam frame at the positions corresponding to the two slides. The arc frames are slidably connected to the adjacent slides, which facilitates the deflection and sliding of the measuring components on the beam frame.

[0008] The positioning module includes a sealed box, which is fixedly connected to the top surface of the beam frame. An arc rod is fixedly connected to the outer wall of one of the two slides, and the arc rod is slidably sleeved with the sealed box. A plug is fixedly connected to the middle position of the sealed box. A partition is fixedly connected to the middle position of the inner bottom surface of the sealed box. An arc tube is fixedly sleeved on the outer wall of the partition, and the plug is slidably sleeved with the arc tube. The sealed box is filled with liquid. A valve is fixedly connected to the middle position of the inner bottom surface of the sealed box. A valve stem is slidably connected to the inner wall of the valve. The outer wall of the valve is fixedly connected to the partition. Both sides of the valve are fixedly connected to connecting pipes. By sealing and opening the two connecting pipes with the valve stem, the cavity at both ends of the sealed box can be switched between connected and disconnected. When the cavity at both ends of the sealed box is connected, the arc rod slides through the plug to drive the liquid to flow at both ends of the sealed box. When the cavity at both ends of the sealed box is disconnected, the liquid in the cavity at both ends of the sealed box cannot flow, thereby limiting the crossbar through the plug and the arc rod.

[0009] The bottom of the sealing box is fixedly connected to the valve position with a second threaded sleeve. The bottom end of the valve stem is threaded and screwed into the second threaded sleeve. Rotating the valve stem will cause the valve stem to move up and down.

[0010] The top of the valve is connected to the inner wall of the sealing box, and the bottom of the valve is connected to the bottom surface of the sealing box, which facilitates the upward and downward movement of the valve stem and prevents the bottom of the valve from being closed.

[0011] The tensioning module includes a frame, one side wall of which is fixedly connected to one side wall of the crossbar, and a groove is provided on the other side wall of the frame. A second lead screw is rotatably connected between the inner walls of the two ends of the frame. A movable component is screwed onto the outer walls of both ends of the second lead screw. One end of the movable component is slidably connected to the inner wall of the groove, and a third pulley is rotatably sleeved onto one end of the movable component. The two third pulleys are connected to a first belt drive. Because the distance between the two first pulleys is relatively long, the stroke of the first belt is relatively long, and the first belt needs to be tensioned to facilitate synchronous rotation between the two first pulleys.

[0012] The support module includes a first support leg, the top of which is fixedly connected to the beam frame. A second support leg is rotatably connected to one end of the beam frame. A sleeve rod is rotatably connected to one side wall of the first support leg. A first threaded sleeve is rotatably connected to one end of the sleeve rod. A first lead screw is rotatably connected to one side wall of the second support leg. The first threaded sleeve and the first lead screw are screwed together. Rotating the first threaded sleeve causes the second support leg to deflect through the first lead screw, thereby adjusting the longitudinal horizontal angle of the beam frame. The beam frame can be adjusted according to the leveling component to facilitate the longitudinal adjustment of the beam frame to a horizontal state.

[0013] The bottom surface of the slide is embedded with multiple rollers that are rotatably connected. The slide is slidably connected to the adjacent arc frame through the rollers, which reduces the resistance between the slide and the arc frame, facilitates the swaying of the measuring component on the arc frame, and ensures that the crossbar remains vertical after swaying.

[0014] Limiting modules are fixedly connected to the outer side wall of one end of the crossbar at the positions corresponding to the third and fourth shafts. Each limiting module includes a fixing plate, a sliding rod slidably sleeved at one end of the fixing plate, a rubber plate fixedly connected to the bottom end of the sliding rod, and a retraction spring fixedly connected between the outer side wall of the top end of the sliding rod and the fixing plate. The rubber plate abuts against the third and fourth shafts, thereby limiting the angle between the third shaft and the frame, preventing the first and second laser lights from automatically deflecting under gravity. A reference plate is fixedly connected to the other side wall of the crossbar at the positions corresponding to the third and fourth shafts. An angle scale is opened on one side wall of the reference plate to facilitate reading the rotation angle of the third and fourth shafts.

[0015] The present invention also discloses a method for using a slope correction device for foundation pits at construction sites, comprising the following steps.

[0016] Step 1: Place the first support leg at the top of the slope, rotate the first threaded sleeve, and drive the second support leg to deflect through the first screw, thereby adjusting the longitudinal horizontal angle of the beam frame. Adjust the beam frame according to the leveling component to make the longitudinal direction of the beam frame horizontal, and fix the second support leg.

[0017] Step 2: Rotate the valve stem to move it downwards, thereby connecting the cavities on both sides of the partition. Shake the crossbar to make it swing along the arc frame. Under the resistance of the liquid in the sealed box and the gravity of the measuring components, the crossbar stops in a vertical position, making its side perpendicular to the ground. Rotate the valve stem in the opposite direction to move it upwards, thereby separating the two connecting pipes and isolating the cavities on both sides of the partition. This restricts the flow of liquid in the cavities on both sides of the partition, thus limiting and fixing the angle of the crossbar by restricting the sliding of the arc rod.

[0018] Step 3: Rotate the second lead screw to make the two moving parts move away from each other, thereby making the two third pulleys move away from each other and tightening the first belt. Rotate one knob to drive the second shaft to rotate via the fourth shaft, adjusting the illumination angle of the second laser light so that the second laser light illuminates the foot of the slope. At the same time, obtain the angle b according to the scale on the reference plate. Rotate another knob to drive the first shaft to rotate via the first belt, adjusting the illumination angle of the first laser light so that the first laser light also illuminates the foot of the slope and the illumination points of the first laser light and the second laser light coincide. Read the angle a through another knob and the corresponding scale on the reference plate. Since the distance L between the first shaft and the second shaft is fixed and has been measured in advance, the value of the distance L is known. Measure the distance h2 between the second laser light and the ground at the top of the slope using a ruler or other measuring tools. Calculate the values ​​of the foot length l and the slope height h1, and obtain the slope value i = h1\l.

[0019] This invention utilizes a first and a second laser light. By adjusting the illumination angle of the second laser light, the second laser light illuminates the foot of the slope, yielding angle b. Rotating another knob allows the first laser light to also illuminate the foot of the slope, aligning the illumination points of the first and second laser lights, and reading angle a. The distance h2 between the second laser light and the top of the slope is measured using a ruler or other measuring tools. The foot length l and slope height h1 are calculated, resulting in the slope value i = h1 / l. This method is more convenient and accurate for measurement and use. Furthermore, by simultaneously illuminating the foot of the slope with both the first and second laser lights, it has a wider range of applications. It provides the foot length l, slope height h1, and slope value i.

[0020] Meanwhile, this invention, through the setting of a support module and a positioning module, places the first support foot at the top of the slope, rotates the first threaded sleeve, and drives the second support foot to deflect through the first screw, thereby adjusting the longitudinal horizontal angle of the beam frame. According to the leveling component, the beam frame is adjusted so that the longitudinal direction of the beam frame is adjusted to a horizontal state. Through the positioning module, the crossbar is shaken so that the measuring component stops in a vertical position under the resistance of the liquid in the sealed box and the gravity of the measuring component, so that the side of the crossbar is perpendicular to the ground, and the plane where the first laser lamp and the second laser lamp rays are located is perpendicular to the ground, thereby compensating for the longitudinal and lateral angular tilt caused by the slope top ground, making the measurement results more accurate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the slope correction device for construction site foundation pits according to the present invention.

[0022] Figure 2 This is a top view of the construction site foundation pit slope correction device of the present invention.

[0023] Figure 3 This is a schematic diagram showing the position of the tensioning module of the present invention.

[0024] Figure 4 This is a schematic diagram of the positioning module of the present invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the sealing box of the present invention.

[0026] Figure 6 This is a schematic diagram of the internal structure of the valve component of the present invention.

[0027] Figure 7 This is a schematic diagram of the structure of the carriage of the present invention.

[0028] Figure 8 This is a schematic diagram of the tensioning module of the present invention.

[0029] Figure 9 This is a schematic diagram of the limiting module of the present invention.

[0030] Figure 10 This is a schematic diagram illustrating the measurement principle of the construction site foundation pit slope correction device of the present invention.

[0031] In the diagram: 100, beam frame; 110, leveling component; 120, support module; 121, first support leg; 122, second support leg; 123, sleeve rod; 124, first threaded sleeve; 125, first lead screw; 130, positioning module; 131, sealing box; 132, partition plate; 133, arc tube; 134, arc rod; 135, plug; 136, valve stem; 137, valve; 138, connecting pipe; 139, second threaded sleeve; 140, arc frame; 200, measuring component; 210, crossbar; 211 212. First shaft; 213. Second shaft; 214. First pulley; 215. Third shaft; 216. Fourth shaft; 217. Second pulley; 220. First laser light; 230. Second laser light; 240. Reference plate; 241. Knob; 250. Tensioning module; 251. Stand; 252. Slide groove; 253. Second lead screw; 254. Moving part; 255. Third pulley; 260. Slide carriage; 270. Limiting module; 271. Fixing plate; 272. Slide rod; 273. Retraction spring. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figure 1 , Figure 2 as well as Figure 3 As shown, the construction site foundation pit slope correction device of the present invention includes a beam frame 100, a measuring component 200 is arranged above the beam frame 100, a leveling component 110 is fixedly installed on one side wall of one end of the beam frame 100, and a support module 120 is fixedly connected to the bottom surface of one end of the beam frame 100.

[0034] The measuring assembly 200 includes a crossbar 210, one end of which is rotatably sleeved with a third shaft 214, and the other end of which is rotatably sleeved with a first shaft 211. A second shaft 212 is rotatably sleeved at the middle of one side wall of the crossbar 210, and a fourth shaft 215 is rotatably sleeved on one side wall of the crossbar 210 located on the side of the second shaft 212. A second pulley 216 is fixedly sleeved on the outer side wall of one end of both the second shaft 212 and the fourth shaft 215. A first pulley 213 is fixedly sleeved on the outer side wall of one end of both the first shaft 211 and the third shaft 214. A first laser lamp 220 is fixedly connected to the other end of the first shaft 211, and a second laser lamp 230 is fixedly connected to the other end of the second shaft 212.

[0035] A first belt is drivingly connected between the two first pulleys 213, and a second belt is drivingly connected between the two second pulleys 216. The first belt and the second belt are toothed conveyor belts, which can provide high-precision transmission. A tensioning module 250 for tensioning the first belt is fixedly connected to one side wall of the crossbar 210. A knob 241 is fixedly sleeved on the other end of the fourth shaft 215 and the third shaft 214. A positioning module 130 is provided on the top surface of one end of the beam frame 100.

[0036] In use, turning one knob 241 rotates the second shaft 212 via the fourth shaft 215, adjusting the illumination angle of the second laser lamp 230 so that it illuminates the foot of the slope. The angle b is obtained from the scale on the reference plate 240. Turning another knob 241 rotates the first shaft 211 via the first belt, adjusting the illumination angle of the first laser lamp 220 so that it also illuminates the foot of the slope, aligning the illumination points of the first laser lamp 220 and the second laser lamp 230. The angle a is read from the scale on the reference plate 240 via the other knob 241. Since the distance L between the first shaft 211 and the second shaft 212 is fixed and pre-measured, the value of distance L is known. The distance h2 between the second laser lamp 230 and the ground at the top of the slope is measured using a ruler or other measuring tools. The slope length l and slope height h1 are calculated, resulting in the slope value i = h1 / l. This method is more convenient and accurate for measurement and use.

[0037] Two carriages 260 are fixedly connected to the outer wall of the crossbar 210, and arc frames 140 are fixedly connected to the top surface of the beam frame 100 at the positions corresponding to the two carriages 260. Figure 7 As shown, the arc frame 140 is slidably connected to the adjacent slide frame 260, which facilitates the deflection and sliding of the measuring component 200 on the beam frame 100.

[0038] like Figure 4 , Figure 5As shown, the positioning module 130 includes a sealing box 131, which is fixedly connected to the top surface of the beam frame 100. An arc rod 134 is fixedly connected to the outer wall of one of the two slides 260, and the arc rod 134 is slidably sleeved with the sealing box 131. A plug 135 is fixedly connected to the middle position of the sealing box 131. A partition 132 is fixedly connected to the middle position of the inner bottom surface of the sealing box 131. An arc tube 133 is fixedly sleeved on the outer wall of the partition 132, and the plug 135 is slidably sleeved with the arc tube 133. The interior of the sealing box 131 is filled with liquid. A valve 137 is fixedly connected to the middle position of the inner bottom surface of the sealing box 131. The valve 137 has an inner... A valve stem 136 is slidably connected to the wall. The outer wall of the valve 137 is fixedly connected to the partition 132. Both sides of the valve 137 are fixedly connected to the connecting pipes 138. By blocking and opening the two connecting pipes 138 through the valve stem 136, the connection and isolation of the cavities at both ends of the sealing box 131 can be switched. When the cavities at both ends of the sealing box 131 are connected, the arc rod 134 slides through the plug 135 to drive the liquid flow at both ends of the sealing box 131. When the cavities at both ends of the sealing box 131 are isolated, the liquid in the cavities at both ends of the sealing box 131 cannot flow, thereby limiting the crossbar 210 through the plug 135 and the arc rod 134.

[0039] A second threaded sleeve 139 is fixedly connected to the bottom surface of the sealing box 131 at the position corresponding to the valve 137, such as... Figure 6 As shown, the bottom end of the valve stem 136 is threaded, and the valve stem 136 is screwed into the second threaded sleeve 139. Rotating the valve stem 136 will cause the valve stem 136 to move up and down. The top end of the valve component 137 is connected to the inner wall of the sealing box 131, and the bottom end of the valve component 137 is connected to the bottom surface of the sealing box 131, which facilitates the upward and downward movement of the valve stem 136 and prevents the bottom end of the valve component 137 from being closed.

[0040] like Figure 7 As shown, the tensioning module 250 includes a stand 251. One side wall of the stand 251 is fixedly connected to one side wall of the crossbar 210. The other side wall of the stand 251 is provided with a groove 252. A second lead screw 253 is rotatably connected between the inner walls of both ends of the stand 251. A movable part 254 is screwed onto the outer walls of both ends of the second lead screw 253. One end of the movable part 254 is slidably connected to the inner wall of the groove 252. A third pulley 255 is rotatably sleeved onto one end of the movable part 254. The two third pulleys 255 are connected to the first belt drive. Since the distance between the two first pulleys 213 is relatively long, the stroke of the first belt is relatively long, and the first belt needs to be tightened to facilitate the synchronous rotation between the two first pulleys 213.

[0041] like Figure 1As shown, the support module 120 includes a first support leg 121, the top of which is fixedly connected to the beam frame 100. A second support leg 122 is rotatably connected to one end of the beam frame 100. A sleeve rod 123 is rotatably connected to one side wall of the first support leg 121. A first threaded sleeve 124 is rotatably connected to one end of the sleeve rod 123. A first lead screw 125 is rotatably connected to one side wall of the second support leg 122. The first threaded sleeve 124 and the first lead screw 125 are screwed together. Rotating the first threaded sleeve 124 causes the second support leg 122 to deflect through the first lead screw 125, thereby adjusting the longitudinal horizontal angle of the beam frame 100. The beam frame 100 is adjusted according to the leveling component 110, making it convenient to adjust the longitudinal direction of the beam frame 100 to a horizontal state.

[0042] The bottom surface of the slide 260 is embedded with multiple rollers that are rotatably connected. The slide 260 is slidably connected to the adjacent arc frame 140 through the rollers, which reduces the resistance between the slide 260 and the arc frame 140, facilitates the swaying of the measuring component 200 on the arc frame 140, and facilitates the horizontal bar 210 to remain in a vertical state after swaying.

[0043] Limiting modules 270 are fixedly connected to the outer wall of one end of the crossbar 210 at the positions corresponding to the third shaft 214 and the fourth shaft 215, such as Figure 9 As shown, the limiting module 270 includes a fixed plate 271. A slide rod 272 is slidably sleeved on one end of the fixed plate 271. A rubber plate is fixedly connected to the bottom end of the slide rod 272. A contraction spring 273 is fixedly connected between the outer side wall of the top end of the slide rod 272 and the fixed plate 271. The rubber plate abuts against the third shaft 214 and the fourth shaft 215, thereby limiting the angle of the third shaft 214 and the upright 251, preventing the first laser light 220 and the second laser light 230 from automatically deflecting under the action of gravity. A reference plate 240 is fixedly connected to the other side wall of the crossbar 210 at the positions corresponding to the third shaft 214 and the fourth shaft 215. An angle scale is opened on one side wall of the reference plate 240 to facilitate reading the rotation angle of the third shaft 214 and the fourth shaft 215.

[0044] The present invention also discloses a method for using a slope correction device for foundation pits at construction sites, the details of which are as follows.

[0045] Step 1: Place the first support leg 121 at the top of the slope, rotate the first threaded sleeve 124, and drive the second support leg 122 to deflect through the first lead screw 125, thereby adjusting the longitudinal horizontal angle of the beam frame 100. Adjust the beam frame 100 according to the leveling component 110 so that the longitudinal direction of the beam frame 100 is adjusted to a horizontal state, and fix the second support leg 122.

[0046] Step 2: Rotate valve stem 136 to move it downward, thereby connecting the cavities on both sides of partition 132. Shake crossbar 210 to swing it along arc frame 140. Under the resistance of the liquid in sealed box 131 and the gravity of measuring component 200, crossbar 210 stops in a vertical position, making its side perpendicular to the ground. Rotate valve stem 136 in the opposite direction to move it upward, thereby separating the two connecting pipes 138 and the cavities on both sides of partition 132, restricting the flow of liquid in the cavities on both sides of partition 132. Thus, the angle of crossbar 210 is limited and fixed by restricting the sliding of arc rod 134.

[0047] Step 3: Rotate the second lead screw 253 to make the two moving parts 254 move away from each other, thereby making the two third pulleys 255 move away from each other, thus tightening the first belt. Rotate one knob 241, which drives the second shaft 212 to rotate via the fourth shaft 215, adjusting the illumination angle of the second laser lamp 230 so that the second laser lamp 230 illuminates the slope foot position. At the same time, according to the scale on the reference plate 240, obtain the angle b. Rotate another knob 241, which drives the first shaft 211 to rotate via the first belt, adjusting the illumination angle of the first laser lamp 220 so that... The first laser light 220 is also illuminating the foot of the slope, and the illumination points of the first laser light 220 and the second laser light 230 are aligned. The angle α is read through another knob 241 and the scale on the corresponding reference plate 240. At the same time, since the distance L between the first shaft 211 and the second shaft 212 is fixed and has been measured in advance, the value of the distance L is known. The distance h2 between the second laser light 230 and the ground at the top of the slope is measured by a ruler or other measuring tools. Thus, the values ​​of the length l of the foot of the slope and the height h1 of the slope are calculated, and the slope value i = h1\l is obtained.

[0048] The working principle of this invention is as follows: In use, the first support leg 121 is placed at the top of the slope, the first threaded sleeve 124 is rotated, and the second support leg 122 is deflected through the first lead screw 125, thereby adjusting the longitudinal horizontal angle of the beam frame 100. The beam frame 100 is then adjusted according to the leveling component 110 so that the longitudinal direction of the beam frame 100 is adjusted to a horizontal state. The second support leg 122 is fixed, the valve rod 136 is rotated so that the valve rod 136 moves downward, thereby connecting the cavities on both sides of the partition 132. The crossbar 210 is shaken so that the crossbar 210 swings along the arc frame 140 and moves within the sealed box 131. Under the resistance of the liquid and the gravity of the measuring component 200, the crossbar 210 stops in a vertical position, making the side of the crossbar 210 perpendicular to the ground. The valve stem 136 is rotated in the opposite direction, causing the valve stem 136 to move upward, thereby isolating the two connecting pipes 138 and isolating the cavities on both sides of the partition 132, restricting the flow of liquid in the cavities on both sides of the partition 132. Thus, by limiting the sliding of the arc rod 134, the angle of the crossbar 210 is limited and fixed, thereby compensating for the angle tilt caused by the slope top ground, so that the fan-shaped deflection of the first laser lamp 220 and the second laser lamp 230 is perpendicular to the ground.

[0049] Then as Figure 10 As shown, rotating the second lead screw 253 causes the two moving parts 254 to move away from each other, thereby causing the two third pulleys 255 to move away from each other, thus tightening the first belt. Rotating a knob 241 drives the second shaft 212 to rotate via the fourth shaft 215, adjusting the illumination angle of the second laser lamp 230 so that the second laser lamp 230 illuminates the slope foot position. At the same time, according to the scale on the reference plate 240, the angle b is obtained. Rotating another knob 241 drives the first shaft 211 to rotate via the first belt. Adjust the illumination angle of the first laser light 220 so that it also illuminates the foot of the slope, and align the illumination points of the first laser light 220 and the second laser light 230. Read the angle 'a' using another knob 241 and the scale on the corresponding reference plate 240. Simultaneously, since the distance L between the first shaft 211 and the second shaft 212 is fixed and pre-measured, the value of distance L is known. Measure the distance h2 between the second laser light 230 and the ground at the top of the slope using a ruler or other measuring tools. tan(90-a)×(lL)=tan(90-b)×l Solve for the length of the slope foot. l The value, through h1=tan (90-b)×l-h2, The length of the slope toe is obtained through calculation. l and slope height h1 The slope value is obtained from the numerical value. i=h1\l It is more convenient and accurate to measure and use.

Claims

1. A slope correction device for foundation pits at construction sites, characterized in that, The device includes a beam frame, a measuring component mounted on top of the beam frame, a leveling component fixedly mounted on one side wall of one end of the beam frame, and a support module fixedly connected to the bottom surface of one end of the beam frame. The measuring component includes a crossbar, a third shaft rotatably sleeved at one end of the crossbar, a first shaft rotatably sleeved at the other end of the crossbar, a second shaft rotatably sleeved at the middle of one side wall of the crossbar, a fourth shaft rotatably sleeved at one side wall of the crossbar located on the side of the second shaft, a second pulley fixedly sleeved on the outer side wall of one end of both the second and fourth shafts, a first pulley fixedly sleeved on the outer side wall of one end of both the first and third shafts, a first laser light fixedly connected to the other end of the first shaft, a second laser light fixedly connected to the other end of the second shaft, a first belt drivingly connecting the two first pulleys, a second belt drivingly connecting the two second pulleys, a tensioning module for tensioning the first belt fixedly connected to one side wall of the crossbar, and knobs fixedly sleeved on the other ends of both the fourth and third shafts. A positioning module is provided on the top surface of one end of the beam frame. Two slides are fixedly connected to the outer side wall of the crossbar, and an arc frame is fixedly connected to the top surface of the beam frame at the position corresponding to the two slides. The arc frame is slidably sleeved with the adjacent slide. The positioning module includes a sealing box, which is fixedly connected to the top surface of the beam frame. An arc rod is fixedly connected to the outer wall of one of the two slides, and the arc rod is slidably sleeved with the sealing box. A plug is fixedly connected to the middle position of the sealing box. A partition is fixedly connected to the middle position of the inner bottom surface of the sealing box. An arc tube is fixedly sleeved on the outer wall of the partition, and the plug is slidably sleeved with the arc tube. The interior of the sealing box is filled with liquid. A valve is fixedly connected to the middle position of the inner bottom surface of the sealing box. A valve stem is slidably connected to the inner wall of the valve. The outer wall of the valve is fixedly connected to the partition. Both sides of the valve are fixedly connected to connecting pipes.

2. The construction site foundation pit slope correction device according to claim 1, characterized in that, The bottom surface of the sealing box is fixedly connected to the valve position with a second threaded sleeve, and the bottom end of the valve stem is threaded, and the valve stem is screwed into the second threaded sleeve.

3. The construction site foundation pit slope correction device according to claim 2, characterized in that, The top end of the valve is connected to the inner wall of the sealing box, and the bottom end of the valve is connected to the bottom surface of the sealing box.

4. The construction site foundation pit slope correction device according to claim 3, characterized in that, The tensioning module includes a frame, one side wall of which is fixedly connected to one side wall of the crossbar, and the other side wall of the frame is provided with a sliding groove. A second lead screw is rotatably connected between the inner walls of both ends of the frame. A movable component is screwed onto the outer walls of both ends of the second lead screw. One end of the movable component is slidably connected to the inner wall of the sliding groove, and a third pulley is rotatably sleeved onto one end of the movable component. The two third pulleys are connected to the first belt drive.

5. The construction site foundation pit slope correction device according to claim 4, characterized in that, The support module includes a first support leg, the top of which is fixedly connected to the beam frame. A second support leg is rotatably connected to one end of the beam frame. A sleeve rod is rotatably connected to one side wall of the first support leg. A first threaded sleeve is rotatably connected to one end of the sleeve rod. A first lead screw is rotatably connected to one side wall of the second support leg. The first threaded sleeve and the first lead screw are screwed together.

6. The construction site foundation pit slope correction device according to claim 5, characterized in that, The bottom surface of the carriage is fitted with multiple rollers that are rotatably connected.

7. The construction site foundation pit slope correction device according to claim 6, characterized in that, Limiting modules are fixedly connected to the outer wall of one end of the crossbar at the positions corresponding to the third and fourth shafts. The limiting module includes a fixing plate, a sliding rod is slidably sleeved on one end of the fixing plate, a rubber plate is fixedly connected to the bottom end of the sliding rod, and a retraction spring is fixedly connected between the outer wall of the top end of the sliding rod and the fixing plate.

8. A method of using the construction site foundation pit slope correction device as described in claim 7, characterized in that, Includes the following steps: Step 1: Place the first support leg at the top of the slope, rotate the first threaded sleeve, and drive the second support leg to deflect through the first screw, thereby adjusting the longitudinal horizontal angle of the beam frame. Adjust the beam frame according to the leveling component to make the longitudinal direction of the beam frame horizontal, and fix the second support leg. Step 2: Rotate the valve stem to move it downwards, thereby connecting the cavities on both sides of the partition. Shake the crossbar to make it swing along the arc frame. Under the resistance of the liquid in the sealed box and the gravity of the measuring components, the crossbar stops in a vertical position, making the side of the crossbar perpendicular to the ground. Rotate the valve stem in the opposite direction to move it upwards, thereby separating the two connecting pipes and the cavities on both sides of the partition. This restricts the flow of liquid in the cavities on both sides of the partition, thereby limiting and fixing the angle of the crossbar by restricting the sliding of the arc rod. Step 3: Rotate the second lead screw to make the two moving parts move away from each other, thus making the two third pulleys move away from each other, thereby tightening the first belt. Rotate one knob to drive the second shaft to rotate via the fourth shaft, adjusting the illumination angle of the second laser light so that it illuminates the foot of the slope. Simultaneously, obtain angle b according to the scale on the reference plate. Rotate another knob to drive the first shaft to rotate via the first belt, adjusting the illumination angle of the first laser light so that it also illuminates the foot of the slope, aligning the illumination points of the first and second laser lights. Read angle 'a' using another knob and the corresponding scale on the reference plate. Since the distance L between the first and second shafts is fixed and pre-measured, the value of distance L is known. Measure the distance h2 between the second laser light and the ground at the top of the slope using a ruler. tan ( 90-a )×( l-L ) =tan ( 90-b )× l Solve for the length of the slope foot. l The value, through h 1 =tan ( 90-b )× l-h 2 ， Obtain the slope height h The value of 1 is used to determine the slope value. i=h 1 / l .

Images