Construction project supervision foundation pit measuring device

Abstract

The invention belongs to the technical field of foundation pit measurement, and discloses a construction project supervision foundation pit measuring device which comprises a machine base, two machine frames symmetrically and fixedly installed on the left side and the right side of the front portion of the upper surface of the machine base, a main unwinding wheel rotationally installed on the rear portions of inner cavities of the two machine frames through a rotating shaft, and a measuring rope wound around the main unwinding wheel. And the balancing weight is fixed at the bottom end of the measuring rope. Through the cooperative design of the driving motor, the main unwinding wheel, the balancing weight and the stabilizing mechanism, the balancing weight can be prevented from driving the measuring rope to deviate due to the influence of wind, the measuring rope can vertically move downwards, the foundation pit depth measuring precision is improved, and the situation that the measuring rope is damaged due to the fact that a weighting block drives the measuring rope to move downwards under the action of gravity is avoided. The problems that a measuring rope is easily influenced by wind to shake and transversely shift, so that the measuring rope shifts, the measuring rope is inconvenient to be perpendicular to the ground at the bottom of a foundation pit, and the accuracy of measuring the depth of the foundation pit is easily reduced are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit measurement, in particular to a foundation pit measurement device for construction engineering supervision. Background Art

[0002] A construction project refers to an engineering entity formed by the construction of various types of buildings and their ancillary facilities and the installation of supporting lines, pipelines, and equipment. In order to lay a solid foundation for the building, it is necessary to dig a foundation pit. During the construction process, the project supervisor is required to measure the depth of the foundation pit using measuring devices.

[0003] In the prior art, a Chinese patent discloses a foundation pit measurement device for construction engineering supervision (publication number: CN219674996U), whose main structure includes a bottom plate, a fixed plate, a slide plate, a handle, a motor, a rotating shaft, a winding wheel, a measuring rope, a fixed frame, a first limiting wheel, a bracket, a second limiting wheel and a weight block. A fixed plate is welded to the rear side of the upper part of the bottom plate, a slide groove is opened on the front side of the top of the bottom plate, a slide plate is slidably arranged on the rear side of the slide groove, a handle is welded to the middle of the front of the slide plate, a motor is arranged on the rear side of the upper part of the fixed plate, and the output shaft of the motor is connected to the rotating shaft through a coupling. The rotating shaft Located on the upper part of the fixed plate and the skateboard, a winding wheel is connected to the middle of the rotating shaft by bolts, the winding wheel is located between the fixed plate and the upper part of the skateboard, a measuring rope is wound around the winding wheel, a fixed frame is arranged on the top of the base plate, the fixed frame is located on the left side of the fixed plate and the skateboard, a first limiting wheel is rotatably arranged on the upper part of the fixed frame, the measuring rope passes around the lower part of the first limiting wheel, a bracket is welded on the left side of the top of the base plate, the bracket is located on the left side of the fixed frame, a second limiting wheel is rotatably arranged on the upper part of the bracket, the measuring rope passes around the upper part of the second limiting wheel, a weight block is connected to the left end of the measuring rope by bolts, and the weight block is located on the front side of the lower part of the bracket.

[0004] In actual use, the above-mentioned patent drives the winding wheel to rotate through a motor, thereby loosening the measuring rope and causing the weight block to move downward. In this way, there is no need to enter the inside of the foundation pit for measurement, and the effect of accurately measuring the foundation pit can be achieved. However, there are still corresponding disadvantages in actual use: when the above-mentioned patent is in use, the weight block drives the measuring rope to move downward under the action of gravity, which is easily affected by the wind and causes swaying and lateral displacement, causing the measuring rope to shift, making it inconvenient to make the measuring rope perpendicular to the ground at the bottom of the foundation pit, which can easily reduce the accuracy of measuring the depth of the foundation pit. Summary of the invention

[0005] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a foundation pit measuring device for construction project supervision, which has the advantages of convenient operation and improved measurement accuracy. Through the coordinated design of structures such as the driving motor, the main unwinding wheel, the counterweight block, and the stabilizing mechanism, the counterweight block can be prevented from driving the measuring rope to deviate due to the influence of wind, and the measuring rope can be made to move vertically downward, thereby improving the accuracy of the foundation pit depth measurement.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction engineering supervision foundation pit measurement device, comprising a machine base, two frames symmetrically fixedly mounted on the left and right sides of the front upper surface of the machine base, a main unwinding wheel mounted on the rear of the inner cavity of the two frames rotating through a rotating shaft, a measuring rope wound around the main unwinding wheel, a counterweight fixed to the bottom end of the measuring rope, a driving motor fixed to the right side wall of one of the frames for driving the main unwinding wheel to rotate, and a stabilizing mechanism arranged on the two frames and the counterweight for preventing the measuring rope from deflecting; The stabilizing mechanism includes a slave unwinding wheel rotatably mounted at the front of the inner cavity of the frame through a rotating shaft, a stabilizing chain wound around the slave unwinding wheel, a driving wheel arranged below the slave unwinding wheel for driving the stabilizing chain to move, a transmission member A arranged on the main unwinding wheel rotating shaft and the slave unwinding wheel rotating shaft, a transmission member B arranged at the front of the slave unwinding wheel and the front of the driving wheel, and a cleaning mechanism arranged at the bottom of the stabilizing chain; Among them, the stabilizing chain is composed of a group of stabilizing shells, and two adjacent stabilizing shells are connected by hinges. The measuring rope is located between the two stabilizing chains, and the bottom end of the stabilizing chain is fixedly connected to the upper surface of the counterweight block. The output shaft end face of the driving motor is fixedly connected to the right end rotating shaft of the main unwinding wheel. The opposite surfaces of the two frames are located below the slave unwinding wheel and two brackets are symmetrically fixedly installed thereon. The driving wheel is rotatably connected to the inner cavity of the bracket, and the outer ring of the driving wheel is movably connected to the outer surface of the stabilizing chain.

[0007] In the above technical solution, preferably, the transmission member A includes two main bevel gears symmetrically fixedly mounted on the left and right side shafts of the main unwinding wheel and a slave bevel gear fixedly mounted on the rear side shaft of the slave unwinding wheel; the main bevel gears and the slave bevel gears are meshed with each other.

[0008] In the above technical solution, preferably, the transmission member B includes a main sprocket fixedly mounted on the front shaft of the unwinding wheel, a slave sprocket fixedly mounted on the front shaft of the driving wheel, and a chain matched with the main sprocket and the slave sprocket.

[0009] In the above technical solution, preferably, the opposite surfaces of the two frames are located above the unwinding wheel and have two limit rods distributed front and back, and the measuring rope passes through between the two limit rods.

[0010] In the above technical solution, preferably, two positioning grooves are symmetrically provided on the front and rear sides of the upper surface of the stabilizing shell, and two positioning blocks are symmetrically fixedly installed on the front and rear sides of the bottom surface of the stabilizing shell, and the shape of the positioning blocks is adapted to the shape of the positioning grooves.

[0011] In the above technical solution, preferably, the cleaning mechanism includes a sleeve fixedly sleeved at the bottom of the stabilizing chain, an annular bottom plate arranged on the outer ring of the sleeve, an annular top plate movably installed on the upper part of the outer ring of the sleeve through a bearing, an annular airbag arranged between the annular bottom plate and the annular top plate, two vertical rods symmetrically fixed on the left and right sides of the ground of the annular bottom plate, two horizontal rods symmetrically arranged on the left and right sides of the bottom of the vertical rods, and a cleaning rod slidably sleeved on the outer surface of the horizontal rod; Among them, the inner ring of the annular bottom plate is movably connected with the outer ring of the shell through a connecting piece A, the bottom surface of the annular airbag is fixedly connected to the upper surface of the annular bottom plate, the top surface of the annular airbag is fixedly connected to the bottom surface of the annular top plate, the annular airbag is communicated with the inner cavity of the vertical rod, and two one-way air inlet valves communicated with the annular airbag are symmetrically arranged on the top surface of the annular top plate, the one-way air inlet valve is used to introduce external air into the annular airbag, a connecting piece B is arranged between the annular bottom plate and the annular top plate, a connecting groove is provided on the bottom surface of the inner cavity of the vertical rod, a sealing block is provided on the upper part of the inner cavity of the connecting groove, a lifting rod is vertically fixedly installed on the bottom surface of the sealing block, a groove is provided at the bottom of the vertical rod, and the bottom end of the lifting rod penetrates into the inner cavity of the groove The cam is configured to engage in a plurality of movement of the camshafts, wherein the plurality of movement of the camshafts are engaged with the plurality of movement of the camshafts, wherein the plurality of movement of the camshafts engages with the plurality of movement of the camshafts. The plurality of movement of the camshafts engages with the plurality of movement of the camshafts, wherein the plurality of movement of the camshafts engages with the plurality of movement of the camshafts.

[0012] In the above technical solution, preferably, the connecting member A includes a spiral groove circumferentially opened on the outer ring of the shell and a docking block fixed on the right side of the inner cavity of the annular bottom plate; wherein the outer surface of the docking block is movably connected to the inner cavity of the spiral groove.

[0013] In the above technical solution, preferably, the connecting member B includes two connecting rods symmetrically and vertically fixedly installed on the upper surface of the annular bottom plate and a compression spring movably sleeved on the outer surface of the connecting rod; wherein the top end of the connecting rod passes through the annular top plate, and the upper and lower ends of the compression spring are respectively fixedly connected to the bottom surface of the annular top plate and the upper surface of the annular bottom plate.

[0014] Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts the coordinated design of structures such as a driving motor, a main unwinding wheel, a counterweight block, and a stabilizing mechanism. When the driving motor drives the main unwinding wheel to release the measuring rope, the main unwinding wheel rotates through a transmission member A to drive the slave unwinding wheel to rotate and release the stabilizing chain. At the same time, the slave unwinding wheel rotates through a transmission member B to drive the driving wheel to rotate. The two driving wheels can drive the two stabilizing chains to move downward, and under the action of the two driving wheels, the two stabilizing chains can be fitted together. When the two stabilizing chains move downward after fitting together, the counterweight block can prevent the measuring rope from being deflected by the influence of wind, and the measuring rope can be made to move vertically downward, thereby improving the accuracy of measuring the depth of the foundation pit. This solves the problem in the prior art that the weight block is easily affected by wind and causes lateral deviation during the process of driving the measuring rope downward to move, causing the measuring rope to deflect, making it inconvenient to make the measuring rope perpendicular to the ground at the bottom of the foundation pit, and easily reducing the accuracy of measuring the depth of the foundation pit.

[0015] 2. The present invention adopts the coordinated design of structures such as a stabilizing chain and a cleaning mechanism. When the counterweight block is close to the ground at the bottom of the foundation pit and the bottom of the roller contacts the ground at the bottom of the foundation pit, the stabilizing chain drives the casing to move downward during continuous downward movement. After the roller is subjected to the reaction force of the ground, it pushes the lifting rod to drive the sealing block to move upward, so that the sealing block moves to the outside of the inner cavity of the connecting groove. At the same time, the roller pushes the annular bottom plate to move upward through the mounting frame and the vertical rod. When the annular bottom plate moves, it can rotate while moving upward under the action of the connecting member A. Therefore, when the annular bottom plate rotates, the vertical rod drives the cleaning rod to move circumferentially. At the same time, when the annular bottom plate moves upward, the annular gas The bag is squeezed, so that the air in the annular airbag enters the inner cavity of the cross bar through the connecting groove, and then the air pushes the sealing plate to drive the assembly rod to move outward. When the assembly rod moves, it drives the cleaning rod to move, so that the cleaning rod can move to the side away from the vertical rod. When the air entering the cross bar pushes the sealing plate to operate into the docking groove, one end of the cleaning rod can extend to below the bottom surface of the counterweight block, so that the cleaning rod can sweep away the debris at the landing point of the counterweight block when it moves circumferentially, so that the counterweight block can fall steadily on the ground at the bottom of the foundation pit, avoiding the influence of debris such as soil and stones on the ground at the bottom of the foundation pit on the falling of the counterweight block, thereby improving the measurement effect and the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the frame, the main unwinding wheel, the transmission member A, the transmission member B, the slave unwinding wheel, and the driving wheel of the present invention; Figure 3 It is a schematic diagram of the structure of the unwinding wheel, measuring rope, stabilizing chain and counterweight block of the present invention; Figure 4It is a partial front cross-sectional structural schematic diagram of the measuring rope, stabilizing chain and counterweight block of the present invention; Figure 5 It is a schematic diagram of the structure of the stabilizing shell of the present invention; Figure 6 It is a partial structural schematic diagram of the stabilizing chain, counterweight, measuring rope and cleaning mechanism of the present invention; Figure 7 It is a partial cross-sectional structural schematic diagram of the stabilizing chain, counterweight, measuring rope and cleaning mechanism of the present invention; Figure 8 It is a structural schematic diagram of the casing, the annular bottom and the connecting member A of the present invention; Fig. 9 It is a partial front cross-sectional structural schematic diagram of the vertical rod, the horizontal rod and the cleaning rod of the present invention; Fig.10 for Fig. 9 An enlarged schematic diagram of part A is shown.

[0017] In the figure: 1, machine base; 2, frame; 3, main unwinding wheel; 4, measuring rope; 5, counterweight; 6, driving motor; 7, stabilizing mechanism; 71, slave unwinding wheel; 72, stabilizing chain; 73, driving wheel; 8, transmission member A; 81, main bevel gear; 82, slave bevel gear; 9, transmission member B; 91, main sprocket; 92, slave sprocket; 93, chain; 10, cleaning mechanism; 101, casing; 102, annular bottom plate; 103, annular top plate; 104, annular airbag ; 105, vertical rod; 106, horizontal rod; 107, cleaning rod; 108, lifting rod; 109, roller; 1010, connecting groove; 1011, assembly rod; 1012, sealing plate; 1013, tension spring; 1014, docking groove; 1015, air inlet; 1016, exhaust hole; 1017, sealing block; 11, connecting part A; 111, spiral groove; 112, docking block; 12, connecting part B; 121, connecting rod; 122, compression spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 10As shown, the present invention provides a foundation pit measurement device for construction engineering supervision, comprising a machine base 1, two frames 2 symmetrically fixedly mounted on the left and right sides of the front upper surface of the machine base 1, a main unwinding wheel 3 mounted on the rear of the inner cavity of the two frames 2 through a rotating shaft, a measuring rope 4 wound around the main unwinding wheel 3, a counterweight 5 fixed to the bottom end of the measuring rope 4, a driving motor 6 fixed to the right side wall of one frame 2 for driving the main unwinding wheel 3 to rotate, and a stabilizing mechanism 7 arranged on the two frames 2 and the counterweight 5 for preventing the measuring rope 4 from deflecting; When in use, the main unwinding wheel 3 is driven by the driving motor 6 to release the measuring rope 4. At the same time, under the weight of the counterweight 5, the measuring rope 4 can be driven to move downward. While the main unwinding wheel 3 rotates to release the measuring rope 4, it can drive the stabilizing mechanism 7 to operate, so that the measuring rope 4 moves vertically downward.

[0020] The stabilizing mechanism 7 includes a secondary unwinding wheel 71 rotatably mounted at the front of the inner cavity of the frame 2 via a rotating shaft, a stabilizing chain 72 wound around the secondary unwinding wheel 71, a driving wheel 73 arranged below the secondary unwinding wheel 71 for driving the stabilizing chain 72 to move, a transmission member A8 arranged on the rotating shaft of the main unwinding wheel 3 and the rotating shaft of the secondary unwinding wheel 71, a transmission member B9 arranged at the front of the secondary unwinding wheel 71 and the front of the driving wheel 73, and a cleaning mechanism 10 arranged at the bottom of the stabilizing chain 72; Among them, the stabilizing chain 72 is composed of a group of stabilizing shells, and two adjacent stabilizing shells are connected by hinges. The measuring rope 4 is located between the two stabilizing chains 72. The bottom end of the stabilizing chain 72 is fixedly connected to the upper surface of the counterweight block 5, and the output shaft end face of the driving motor 6 is fixedly connected to the right end rotating shaft of the main unwinding wheel 3. The opposite surfaces of the two frames 2 are located below the unwinding wheel 71 and two brackets are symmetrically fixedly installed. The driving wheel 73 is rotatably connected to the inner cavity of the bracket, and the outer ring of the driving wheel 73 is movably connected to the outer surface of the stabilizing chain 72.

[0021] When in use, when the driving motor 6 drives the main unwinding wheel 3 to release the measuring rope 4, the main unwinding wheel 3 rotates through the transmission part A8 to drive the slave unwinding wheel 71 to rotate and release the stabilizing chain 72, and at the same time, the slave unwinding wheel 71 rotates through the transmission part B9 to drive the driving wheel 73 to rotate. The two driving wheels 73 can drive the two stabilizing chains 72 to move downward, and under the action of the two driving wheels 73, the two stabilizing chains 72 can be fitted together. When the two stabilizing chains 72 move downward after fitting together, the counterweight block 5 can prevent the measuring rope 4 from being deviated due to the influence of wind, and the measuring rope 4 can be made to move vertically downward, thereby improving the accuracy of the foundation pit depth measurement.

[0022] It should be noted that when the counterweight 5 is close to the ground at the bottom of the foundation pit, the stabilizing chain 72 can drive the cleaning mechanism 10 to operate during its continuous downward movement. The cleaning mechanism 10 can clean up the debris at the landing point of the counterweight 5 on the ground at the bottom of the foundation pit, making it easier for the counterweight 5 to fall smoothly on the ground at the bottom of the foundation pit, avoiding the influence of debris such as soil and stones on the ground at the bottom of the foundation pit on the falling of the counterweight 5, thereby improving the measurement effect and the practicality of the equipment.

[0023] like Figure 2 As shown, the transmission member A8 includes two main bevel gears 81 symmetrically fixedly mounted on the left and right rotating shafts of the main unwinding wheel 3 and a slave bevel gear 82 fixedly mounted on the rear rotating shaft of the slave unwinding wheel 71; the main bevel gears 81 and the slave bevel gears 82 mesh with each other.

[0024] When in use, when the main unwinding wheel 3 rotates to release the measuring rope 4 , the main unwinding wheel 3 can drive the slave bevel gear 82 to rotate through the main bevel gear 81 , and the rotation of the slave bevel gear 82 can drive the slave unwinding wheel 71 to rotate synchronously to release the stabilizing chain 72 .

[0025] like Figure 2 As shown, the transmission member B9 includes a main sprocket 91 fixedly mounted on the front shaft of the unwinding wheel 71, a slave sprocket 92 fixedly mounted on the front shaft of the driving wheel 73, and a chain 93 matched with the main sprocket 91 and the slave sprocket 92.

[0026] When in use, when the unwinding wheel 71 rotates to release the stabilizing chain 72, the unwinding wheel 71 rotates through the main sprocket 91, and under the action of the chain 93, it can drive the slave sprocket 92 to rotate. The rotation of the slave sprocket 92 can drive the driving wheel 73 to rotate synchronously and drive the two stabilizing chains 72 to fit together and move downward.

[0027] like Figure 2 As shown, two limit rods are distributed front and back from the top of the unwinding wheel 71 on the opposite sides of the two frames 2, and the measuring rope 4 passes through between the two limit rods.

[0028] When in use, under the action of the two limiting rods, when the main unwinding wheel 3 rotates to release the measuring rope 4 , the measuring rope 4 can be vertically located between the two stabilizing chains 72 .

[0029] like Figure 5 As shown, two positioning grooves are symmetrically provided on the front and rear sides of the upper surface of the stabilizing shell, and two positioning blocks are symmetrically fixedly installed on the front and rear sides of the bottom surface of the stabilizing shell, and the shape of the positioning blocks matches the shape of the positioning grooves.

[0030] When in use, the positioning blocks of two adjacent stabilizing shells are combined with the positioning grooves to improve the stability of the stabilizing chain 72 .

[0031] like Figures 6 to 10As shown, the cleaning mechanism 10 includes a casing 101 fixedly sleeved on the bottom of the stabilizing chain 72, an annular bottom plate 102 arranged on the outer ring of the casing 101, an annular top plate 103 movably mounted on the upper part of the outer ring of the casing 101 through a bearing, an annular air bag 104 arranged between the annular bottom plate 102 and the annular top plate 103, two vertical rods 105 symmetrically fixed on the left and right sides of the ground of the annular bottom plate 102, two horizontal rods 106 symmetrically arranged on the left and right sides of the bottom of the vertical rod 105, and a cleaning rod 107 slidably sleeved on the outer surface of the horizontal rod 106; The inner ring of the annular bottom plate 102 is movably connected to the outer ring of the casing 101 through a connecting piece A11, the bottom surface of the annular airbag 104 is fixedly connected to the upper surface of the annular bottom plate 102, the top surface of the annular airbag 104 is fixedly connected to the bottom surface of the annular top plate 103, the annular airbag 104 is connected to the inner cavity of the vertical rod 105, and the top surface of the annular top plate 103 is symmetrically provided with two one-way air inlet valves connected to the annular airbag 104, which are used to transfer the outer The air is introduced into the annular airbag 104, a connecting piece B12 is provided between the annular bottom plate 102 and the annular top plate 103, a connecting groove 1010 is provided on the bottom surface of the inner cavity of the vertical rod 105, a sealing block 1017 is provided on the upper part of the inner cavity of the connecting groove 1010, a lifting rod 108 is vertically fixedly installed on the bottom surface of the sealing block 1017, a groove is provided at the bottom of the vertical rod 105, the bottom end of the lifting rod 108 penetrates into the inner cavity of the groove, and the lifting rod 108 and the groove are connected. The inner cavity top surface of the cross bar 106 is slidably connected, the bottom end of the lifting rod 108 is movably mounted with a roller 109 through a mounting frame, the inner cavity of the cross bar 106 is connected to the lower part of the inner cavity of the connecting groove 1010, and the inner cavity of the cleaning rod 107 is fixedly mounted with an assembly rod 1011, one end of the assembly rod 1011 extends into the inner cavity of the cross bar 106, and one end of the assembly rod 1011 is fixedly mounted with a sealing plate 1012 adapted to the inner cavity of the cross bar 106, and the two sealing plates 1012 are fixedly mounted. A tension spring 1013 is arranged in the middle, and the left and right ends of the tension spring 1013 are fixedly connected to the opposite surfaces of the two sealing plates 1012 respectively, a docking groove 1014 is provided on the side of the inner cavity of the cross bar 106 away from the connecting groove 1010, and an air inlet hole 1015 is provided on the outer surface of the assembly rod 1011 close to the sealing plate 1012, and an exhaust hole 1016 connected with the air inlet hole 1015 is provided on the end of the cleaning rod 107 away from the vertical rod 105.

[0032] When in use, when the counterweight block 5 is close to the ground at the bottom of the foundation pit and the bottom of the roller 109 is in contact with the ground at the bottom of the foundation pit, the stabilizing chain 72 drives the casing 101 to move downward during the continuous downward movement. After the roller 109 is subjected to the reaction force of the ground, it pushes the lifting rod 108 to drive the sealing block 1017 to move upward, so that the sealing block 1017 moves to the outside of the inner cavity of the connecting groove 1010. At the same time, the roller 109 pushes the annular bottom plate 102 to move upward through the mounting frame and the vertical rod 105. When the annular bottom plate 102 moves, it can rotate while moving upward under the action of the connecting piece A11, so that when the annular bottom plate 102 rotates, it drives the vertical rod 105 to drive the cleaning rod 107 to move circumferentially. At the same time, when the annular bottom plate 102 moves upward, it squeezes the annular airbag 104, so that the air in the annular airbag 104 enters the cross bar 10 through the connecting groove 1010. 6, and then the air pushes the sealing plate 1012 to drive the assembly rod 1011 to move outward. When the assembly rod 1011 moves, it drives the cleaning rod 107 to move, so that the cleaning rod 107 can move to the side away from the vertical rod 105. When the air entering the cross bar 106 pushes the sealing plate 1012 to operate into the docking groove 1014, one end of the cleaning rod 107 can extend below the bottom surface of the counterweight block 5, so that the cleaning rod 107 can sweep away the debris at the landing point of the counterweight block 5 during circumferential movement. At the same time, the amount of air in the annular airbag 104 decreases with the squeezing, and the air in the docking groove 1014 enters the exhaust hole 1016 through the air inlet hole 1015 and is discharged. Under the pulling force of the tension spring 1013, the two cleaning rods 107 can be retracted and reset, thereby avoiding the cleaning rod 107 from affecting the contact between the counterweight block 5 and the ground at the bottom of the foundation pit.

[0033] like Figure 8 As shown, the connecting member A11 includes a spiral groove 111 circumferentially opened on the outer ring of the housing 101 and a docking block 112 fixed to the right side of the inner cavity of the annular bottom plate 102; wherein the outer surface of the docking block 112 is movably connected to the inner cavity of the spiral groove 111.

[0034] When in use, when the annular bottom plate 102 moves upward, it can drive the docking block 112 to move along the inner cavity of the spiral groove 111, so that the annular bottom plate 102 can rotate when moving upward.

[0035] like Figure 7 As shown, the connecting member B12 includes two connecting rods 121 symmetrically and vertically fixedly installed on the upper surface of the annular bottom plate 102 and a compression spring 122 movably sleeved on the outer surface of the connecting rod 121; wherein, the top end of the connecting rod 121 passes through the annular top plate 103, and the upper and lower ends of the compression spring 122 are fixedly connected to the bottom surface of the annular top plate 103 and the upper surface of the annular bottom plate 102 respectively.

[0036] During use, after the measurement is completed, the annular base plate 102 can move downward under the push of the elastic force of the compression spring 122. When the annular base plate 102 moves downward, it can drive the annular airbag 104 to expand, allowing the annular airbag 104 to inhale air, thereby preparing for subsequent measurement work.

[0037] The working principle and use process of the present invention: When in use, when the driving motor 6 drives the main unwinding wheel 3 to release the measuring rope 4, the main unwinding wheel 3 rotates through the main bevel gear 81 to drive the slave bevel gear 82 to rotate, and the rotation of the slave bevel gear 82 can drive the slave unwinding wheel 71 to rotate synchronously to release the stabilizing chain 72, and the slave unwinding wheel 71 rotates through the main sprocket 91. Under the action of the chain 93, it can drive the slave sprocket 92 to rotate, and the rotation of the slave sprocket 92 can drive the driving wheel 73 to rotate and synchronously drive the two stabilizing chains 72 to fit each other and move downward, which can prevent the counterweight block 5 from driving the measuring rope 4 to deviate due to the influence of wind, and can make the measuring rope 4 move vertically downward. When the counterweight 5 is close to the ground at the bottom of the foundation pit and the bottom of the roller 109 is in contact with the ground at the bottom of the foundation pit, the stabilizing chain 72 drives the casing 101 to move downward during the continuous downward movement. After the roller 109 is subjected to the reaction force of the ground, it pushes the lifting rod 108 to drive the sealing block 1017 to move upward, so that the sealing block 1017 moves to the outside of the inner cavity of the connecting groove 1010. At the same time, the roller 109 pushes the annular bottom plate 102 to move upward through the mounting frame and the vertical rod 105. When the annular bottom plate 102 moves upward, it can drive the docking block 112 to move along the inner cavity of the spiral groove 111. Thus, the annular bottom plate 102 can rotate when it moves upward, and the annular bottom plate 102 rotates to drive the vertical rod 105 to drive the cleaning rod 107 to move in a circumferential direction. At the same time, the annular bottom plate 102 squeezes the annular airbag 104 when it moves upward, so that the air in the annular airbag 104 enters the inner cavity of the cross bar 106 through the connecting groove 1010. Then, the air pushes the sealing plate 1012 to drive the assembly rod 1011 to move outward. When the assembly rod 1011 moves, it drives the cleaning rod 107 to move, so that the cleaning rod 107 can move to the side away from the vertical rod 105. When the air enters the cross bar 106, When the air pushes the sealing plate 1012 to operate into the docking groove 1014, one end of the cleaning rod 107 can be extended to below the bottom surface of the counterweight block 5, so that the cleaning rod 107 can clear the debris at the landing point of the counterweight block 5 during circumferential movement. At the same time, the amount of air in the annular airbag 104 decreases with the squeezing, and the air in the docking groove 1014 enters the exhaust hole 1016 through the air inlet hole 1015 and is discharged. Under the pulling force of the tension spring 1013, the two cleaning rods 107 can be retracted and reset, thereby avoiding the cleaning rod 107 from affecting the contact between the counterweight block 5 and the ground at the bottom of the foundation pit.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction project supervision foundation pit measurement device, characterized in that , comprising a machine base (1), two frames (2) symmetrically fixedly mounted on the left and right sides of the front upper surface of the machine base (1), a main unwinding wheel (3) rotatably mounted on the rear inner cavity of the two frames (2) via a rotating shaft, a measuring rope (4) wound around the main unwinding wheel (3), a counterweight (5) fixed at the bottom end of the measuring rope (4), a driving motor (6) fixed to the right side wall of one of the frames (2) for driving the main unwinding wheel (3) to rotate, and a stabilizing mechanism (7) arranged on the two frames (2) and the counterweight (5) for preventing the measuring rope (4) from deflecting; The stabilizing mechanism (7) comprises a secondary unwinding wheel (71) rotatably mounted on the front part of the inner cavity of the frame (2) via a rotating shaft, a stabilizing chain (72) wound around the secondary unwinding wheel (71), a driving wheel (73) arranged below the secondary unwinding wheel (71) for driving the stabilizing chain (72) to move, a transmission member A (8) arranged on the rotating shaft of the main unwinding wheel (3) and the rotating shaft of the secondary unwinding wheel (71), a transmission member B (9) arranged at the front part of the secondary unwinding wheel (71) and the front part of the driving wheel (73), and a cleaning mechanism (10) arranged at the bottom of the stabilizing chain (72); The stabilizing chain (72) is composed of a group of stabilizing shells, and two adjacent stabilizing shells are connected by hinges. The measuring rope (4) is located between the two stabilizing chains (72). The bottom end of the stabilizing chain (72) is fixedly connected to the upper surface of the counterweight (5). The output shaft end face of the driving motor (6) is fixedly connected to the right end rotating shaft of the main unwinding wheel (3). Two brackets are symmetrically fixedly installed on the opposite surfaces of the two frames (2) below the slave unwinding wheel (71). The driving wheel (73) is rotatably connected to the inner cavity of the bracket, and the outer ring of the driving wheel (73) is movably connected to the outer surface of the stabilizing chain (72).

2. A construction engineering supervision foundation pit measurement device according to claim 1, characterized in that: The transmission member A (8) comprises two main bevel gears (81) symmetrically fixedly sleeved on the left and right rotating shafts of the main unwinding wheel (3), and a secondary bevel gear (82) fixedly sleeved on the rear rotating shaft of the secondary unwinding wheel (71); the main bevel gears (81) and the secondary bevel gears (82) mesh with each other.

3. A construction engineering supervision foundation pit measurement device according to claim 1, characterized in that: The transmission member B (9) comprises a main sprocket (91) fixedly sleeved on the front rotating shaft of the secondary unwinding wheel (71), a secondary sprocket (92) fixedly sleeved on the front rotating shaft of the driving wheel (73), and a chain (93) arranged on the main sprocket (91) and the secondary sprocket (92) to match each other.

4. A construction engineering supervision foundation pit measurement device according to claim 1, characterized in that: Two limit rods are arranged front and back on the opposite sides of the two frames (2) and above the unwinding wheel (71), and the measuring rope (4) passes through between the two limit rods.

5. A construction engineering supervision foundation pit measurement device according to claim 1, characterized in that: Two positioning grooves are symmetrically arranged on the front and rear sides of the upper surface of the stabilizing shell, and two positioning blocks are symmetrically fixedly installed on the front and rear sides of the bottom surface of the stabilizing shell, and the shape of the positioning blocks is adapted to the shape of the positioning grooves.

6. A construction engineering supervision foundation pit measurement device according to claim 1, characterized in that: The cleaning mechanism (10) comprises a casing (101) fixedly sleeved on the bottom of the stabilizing chain (72), an annular bottom plate (102) arranged on the outer ring of the casing (101), an annular top plate (103) movably mounted on the upper part of the outer ring of the casing (101) via a bearing, an annular air bag (104) arranged between the annular bottom plate (102) and the annular top plate (103), two vertical rods (105) symmetrically fixed on the left and right sides of the ground of the annular bottom plate (102), two horizontal rods (106) symmetrically arranged on the left and right sides of the bottom of the vertical rods (105), and a cleaning rod (107) slidably sleeved on the outer surface of the horizontal rod (106); The inner ring of the annular bottom plate (102) is movably connected to the outer ring of the casing (101) via a connecting piece A (11); the bottom surface of the annular airbag (104) is fixedly connected to the upper surface of the annular bottom plate (102); the top surface of the annular airbag (104) is fixedly connected to the bottom surface of the annular top plate (103); the annular airbag (104) is communicated with the inner cavity of the vertical rod (105); two one-way air inlet valves in communication with the annular airbag (104) are symmetrically arranged on the top surface of the annular top plate (103); the one-way air inlet valves are used to introduce external air into the annular airbag (104); and a connecting piece B (12) is arranged between the annular bottom plate (102) and the annular top plate (103).

7. A construction engineering supervision foundation pit measurement device according to claim 6, characterized in that: The connecting member A (11) comprises a spiral groove (111) circumferentially formed on the outer ring of the casing (101) and a docking block (112) fixed on the right side of the inner cavity of the annular bottom plate (102); wherein the outer surface of the docking block (112) is movably connected to the inner cavity of the spiral groove (111).

8. A construction engineering supervision foundation pit measurement device according to claim 6, characterized in that: The connecting member B (12) comprises two connecting rods (121) symmetrically and vertically fixedly mounted on the upper surface of the annular bottom plate (102) and a compression spring (122) movably sleeved on the outer surface of the connecting rod (121); wherein the top end of the connecting rod (121) passes through the annular top plate (103), and the upper and lower ends of the compression spring (122) are respectively fixedly connected to the bottom surface of the annular top plate (103) and the upper surface of the annular bottom plate (102).

9. A construction engineering supervision foundation pit measurement device according to claim 6, characterized in that: A connecting groove (1010) is provided on the bottom surface of the inner cavity of the vertical rod (105), a sealing block (1017) is provided on the upper part of the inner cavity of the connecting groove (1010), a lifting rod (108) is vertically fixedly installed on the bottom surface of the sealing block (1017), a groove is provided on the bottom of the vertical rod (105), the bottom end of the lifting rod (108) penetrates into the inner cavity of the groove, the lifting rod (108) is slidably connected to the top surface of the inner cavity of the groove, a roller (109) is movably installed on the bottom end of the lifting rod (108) through a mounting frame, the inner cavity of the cross rod (106) is connected to the lower part of the inner cavity of the connecting groove (1010), and an assembly rod (1011) is fixedly installed in the inner cavity of the cleaning rod (107), one end of the assembly rod (1011) extends to the cross rod (106). A sealing plate (1012) adapted to the inner cavity of the cross bar (106) is fixedly installed at one end of the assembly rod (1011), a tension spring (1013) is arranged between the two sealing plates (1012), and the left and right ends of the tension spring (1013) are respectively fixedly connected to the opposite surfaces of the two sealing plates (1012), a docking groove (1014) is provided on the side of the inner cavity of the cross bar (106) away from the connecting groove (1010), and an air inlet hole (1015) is provided on the outer surface of the assembly rod (1011) close to the sealing plate (1012), and an exhaust hole (1016) connected to the air inlet hole (1015) is provided on one end of the cleaning rod (107) away from the vertical rod (105).

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