Measuring device for building engineering project management

Abstract

The invention discloses a measuring device for building engineering project management, and relates to the technical field of engineering equipment measurement. The device comprises a device body, two limiting plates are symmetrically and fixedly installed in the top end of the device body, a cover plate is arranged in the two limiting plates, a measuring table is slidably installed on the back face of the inner wall of the device body through a spring, and the top of the measuring table makes contact with the bottom of the cover plate; and a threaded rod penetrates through and is fixedly mounted at the bottom of the gear. The equipment practicability is effectively improved, the measurement range is effectively expanded, meanwhile, the friction plate effectively pushes away small-particle stones and soil blocks below the supporting direction of the supporting component, the supporting component is made to make horizontal contact with the ground, and it is ensured that the measurement table is in a horizontal posture; slight inclination between the supporting component and the ground due to obstruction of small-particle stones and soil blocks is prevented, and the situation that acquired data are measurement data in a non-horizontal state is avoided.

Description

Technical Field

[0001] This invention relates to the field of engineering equipment measurement technology, specifically a measuring device for construction project management. Background Technology

[0002] Construction engineering is a general term for all kinds of buildings and engineering facilities that provide the material and technical foundation for human life and production. In the management of construction engineering projects, managers need to organize and manage the construction of construction projects and strictly control the requirements of construction procedures, construction technology, and construction methods to ensure the quality standards of construction projects.

[0003] Patent publication number CN112833866B discloses a measuring device for construction project management, belonging to the technical field of construction engineering measuring equipment. The measuring device includes a housing with a cavity in the center of the top surface. A cover is provided above the cavity. Two symmetrical side grooves are formed on the upper ends of the inner walls on both sides of the cavity. An inner cavity is formed at the front end of the inner wall of the side groove, and a gear is located in the center of the inner cavity. Multiple toothed grooves are formed linearly and equally spaced on the outer walls on both sides of the cover. Two through grooves are symmetrically formed on both sides of the bottom surface of the housing, and a support column is embedded in the through groove. A threaded hole is formed at the front end of the support column, and a threaded rod is inserted into the threaded hole. A limiting block is fixed at the lower end of the inner wall of the through groove. A limiting groove is formed on the inner wall of the support column relative to the limiting block. A measuring component is located in the center of the cavity. This patent effectively reduces the time required for disassembly and reinstallation when changing measuring positions, facilitating measurement work and improving measurement efficiency, making it highly practical.

[0004] However, the device also has shortcomings: while it can improve measurement efficiency, when the device is used for measurement on the construction site, the support components at its bottom are easily disturbed by small stones and clods of soil, which can cause the device to tilt slightly. This results in the data being measured in a non-horizontal state, which can reduce the measurement accuracy to some extent. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a measuring device for construction project management, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for construction project management, comprising a main body, two limiting plates symmetrically and fixedly installed inside the top of the main body, and a cover plate inside the two limiting plates. A measuring platform is slidably installed on the back of the inner wall of the main body via a spring, with the top of the measuring platform contacting the bottom of the cover plate. A gear is rotatably installed inside one end of the front of the limiting plate, and a threaded rod is fixedly installed through the bottom of the gear. A support component is threaded through the outer wall of the threaded rod and threadedly connected to it. A U-shaped plate is hinged to the bottom of the support component via a torsion spring, and a friction plate is hinged to the bottom of the U-shaped plate. An H-shaped plate is fixedly installed on the side of the support component near the center of the main body. A protective device for protecting the entire device is provided at the bottom of the H-shaped plate, and a damage prevention device to avoid damage to parts is provided above the protective device. An elastic telescopic frame is fixedly installed on the top of the H-shaped plate, and an elastic telescopic rod is fixedly installed inside the elastic telescopic frame.

[0007] According to the above technical solution, a pad is provided at the bottom of the main body of the device, the two ends of the cover plate are designed with toothed grooves, and a handle is provided at the top of the cover plate. Several circular grooves and grooved columns are equidistantly opened on the top of the measuring platform. The gear meshes with the toothed grooves of the cover plate. The front and back sides of the support component are slidably connected to the inner wall of the main body of the device. The top of the telescopic end of the elastic telescopic frame contacts the bottom of the measuring platform, and the top of the telescopic end of the elastic telescopic rod contacts the top of the inner wall of the telescopic end of the elastic telescopic frame. When the measuring personnel find a suitable position to place the main body of the device and simultaneously push the cover plate forward, the cover plate slides forward along the inside of the limiting plate. Once the cover plate is released, the measuring platform slides upwards along the inner wall of the device body under spring force. Upon resetting, the cover plate contacts the inclined surface of the measuring platform, causing it to slide downwards to reset. Workers can place external measuring instruments on the measuring platform, or move and stack groove columns inside the circular groove to perform measurements such as building spacing and daylighting measurements for lower-floor residents. The toothed grooves at both ends of the cover plate contact meshing gears. The horizontal movement of the cover plate causes the gears to generate rotational force and begin to rotate. The rotation of the gears drives the threaded rod to rotate, and the threaded rod, through the threaded grooves, drives the threaded support components along the device. The inner wall of the main body slides downwards, and the supporting component drives the U-shaped plate to move synchronously. The U-shaped plate drives the friction plate to move synchronously. When the friction plate is flush with the bottom pad of the main body and in contact with the ground, the friction plate continues to move and, through the ground's resistance, causes the hinge shaft at the top of the U-shaped plate to start rotating. The U-shaped plate rotates about the hinge shaft in a direction away from the center of the main body. At this time, the U-shaped plate drives the friction plate to move synchronously, and the friction plate slides and wipes the ground directly below the supporting component. As the supporting component continues to descend, it causes the U-shaped plate to sink into itself and the friction plate. At this point, the supporting component contacts the ground and holds the main body of the device in place. The H-shaped plate moves downwards along with the supporting components, causing the elastic telescopic frame to move synchronously. The elastic telescopic frame then drives the elastic telescopic rod to move synchronously. In the initial stage of the cover plate sliding, when the end of the measuring platform connected to the inner wall of the device body is pushed by the spring force, the telescopic end of the elastic telescopic frame supports the bottom of the suspended end of the measuring platform. At the same time, when the staff carries or moves the device body, and the device body experiences bumps during the movement, the telescopic end of the elastic telescopic frame supports and relieves the force on the suspended end of the measuring platform. Furthermore, the telescopic end of the elastic telescopic rod distributes the force on the telescopic end of the elastic telescopic frame at multiple points.

[0008] According to the above technical solution, the protective device includes two inclined frame plates. The tops of the two inclined frame plates are symmetrically and hinged to the bottom of the H-shaped plate by torsion springs. A long frame plate is fixedly installed on the bottom of the inner wall of the device body. A U-shaped push plate is hinged to the outer wall of the bottom end of the inclined frame plate by torsion springs. A telescopic plate is fixedly installed on the outer wall of the device body.

[0009] According to the above technical solution, the bottom end of the inclined frame plate is located outside the main body of the device, and the top corner of the long frame plate contacts the inclined surface of the inclined frame plate. The telescopic end of the telescopic plate is fixedly installed inside the U-shaped push plate by a crossbar. When the H-shaped plate moves downward, it drives the inclined frame plate to move synchronously along the top arc surface of the long frame plate in an inclined posture. When the inclined frame plate contacts the ground, it generates a resisting force. As the H-shaped plate continues to move downward, the bottom inclined surface of the inclined frame plate is limited by the top arc surface of the long frame plate, causing the hinge axis between the top of the inclined frame plate and the H-shaped plate to... As the device begins to rotate, the bottom of the inclined frame plate flips upward around the hinge axis. The inclined frame plate drives the U-shaped push plate to slide upward along the outer wall of the device body. At this time, the top of the U-shaped push plate is limited by the outer wall of the device body, causing its hinge axis to start rotating. As the inclined frame plate flips, the U-shaped push plate pushes the telescopic plate upward through the crossbar to extend and retract. When the device body is placed on an inclined ground, the two inclined frame plates are in contact with the ground at different times, and the long frame plate is not in contact with the ground at the same time, which will cause the telescopic plate to extend inconsistently.

[0010] According to the above technical solution, an inclined plate is hinged inside the inclined frame plate by a torsion spring. The top of the inclined plate is in contact with the inner wall of the device body. Several arc-shaped blocks are fixedly installed on the side of the inclined plate near the center of the device body. The arc-shaped blocks are equidistantly distributed on the inclined surface of the inclined plate. A flipping plate is hinged inside both the front and back ends of the H-shaped plate by a torsion spring. The bottom of the flipping plate is located on the movement trajectory of the arc-shaped blocks. When the inclined frame plate flips, it drives the inclined plate to move synchronously along the inner wall of the device body. The inclined plate is limited by the inner wall of the device body, causing its hinge axis to start rotating. At this time, the inclined plate moves upward along the inner wall of the device body and drives the arc-shaped blocks to move synchronously. During the upward movement of the arc-shaped blocks, they abut against the flipping plate. The flipping plate flips upward inside the H-shaped plate with the hinge axis as the axis through the abutment force. After a single arc-shaped block passes over the flipping plate, the flipping plate returns to its original position with the help of the torsion spring. This process is repeated.

[0011] According to the above technical solution, the anti-damage device includes two flat plates, which are symmetrically and fixedly installed on the side of the support component near the center of the device body. A pressure plate is hinged at the top edge of the flip plate, and the top of the pressure plate contacts the bottom of the flat plate. Several extrusion blocks are symmetrically and fixedly installed on the side of the pressure plate near the axis of the H-shaped plate. Several L-shaped ball blocks are symmetrically and slidably installed on the top of the H-shaped plate through springs.

[0012] According to the above technical solution, a torsion spring is provided between the bottom of the pressure plate and the edge of the flipping plate. The side of the support component near the H-shaped plate is located on the movement trajectory of the L-shaped ball. The top of the L-shaped ball is located on the movement trajectory of the arc surface of the extrusion block. The L-shaped ball is hollow. When the flipping plate flips upward, it drives the pressure plate to move synchronously. When the pressure plate moves upward, it is limited by the bottom of the flat plate. At this time, the hinge shaft of the pressure plate starts to rotate and moves downward in an arc trajectory with the hinge shaft as the axis. The pressure plate drives the extrusion block to move synchronously. During the movement of the extrusion block, it comes into contact with the top spherical surface of the L-shaped ball and generates a resisting force. The extrusion block pushes the L-shaped ball to quickly hit the outer wall of the support component and generate vibration. Afterward, the extrusion block is reset by the spring force and this step is repeated.

[0013] According to the above technical solution, a U-shaped frame is fixedly installed on the side of the L-shaped ball block near the flipping plate. The bottom of the U-shaped frame contacts the top of the H-shaped plate. Several round rods are equidistantly and rotatably installed inside the U-shaped frame. Friction rollers are fixedly installed on the outer walls of the round rods. The outer walls of the friction rollers contact the top edge of the H-shaped plate. When the L-shaped ball block moves away from the center of the H-shaped plate, it drives the U-shaped frame to slide synchronously along the top of the H-shaped plate. The U-shaped frame drives the round rods to move synchronously. The round rods drive the friction rollers to slide along the top of the H-shaped plate to generate friction. The friction rollers drive the round rods to rotate inside the U-shaped frame. The friction rollers rotate and rub the hinged flipping point of the flipping plate.

[0014] This invention provides a measuring device for construction project management. It has the following advantages: (1) The present invention uses a measuring platform, gears, threaded rods, support components, U-shaped plates, friction plates, H-shaped plates, elastic telescopic frames and elastic telescopic rods in combination. The support components facilitate the change of the measurement height of the main body of the device, effectively improving the practicality of the equipment and expanding the measurement range. At the same time, the friction plates effectively push away small pebbles and soil below the support position of the support components, so that the support components are in horizontal contact with the ground, ensuring that the measuring platform is in a horizontal posture, preventing the support components from tilting slightly between the ground due to the obstruction of small pebbles and soil, and avoiding the acquisition of measurement data in a non-horizontal state; and the elastic telescopic frames and elastic telescopic rods and other components provide force support for the measuring platform, preventing the suspended end of the measuring platform from falling under the interference of external forces and its own weight, preventing the probability of the suspended end of the measuring platform tilting downwards in the long run, avoiding the measuring platform deviating from the horizontal measurement posture while reducing the measurement accuracy, increasing the measurement preparation time of the staff and shortening the service life of the measuring platform itself.

[0015] (2) The present invention, through the setting of protective devices, uses H-shaped plate, inclined frame plate, long frame plate, U-shaped push plate, telescopic engraving plate, inclined plate, arc block and flip plate to support the device body when it overturns, thereby improving the protection of the device body and avoiding overturning and collision. At the same time, the extension distance of the telescopic engraving plates on both sides can be used to determine whether the device body is placed flat on the ground. If it is not flat, it is easy to adjust in time or to convert the measurement data by the front and rear position difference, thereby improving the practicality on unpaved roads such as construction sites. When the equipment malfunctions and resets during measurement, the arc-shaped block that moves downwards suddenly contacts the flipping plate that moves upwards with the H-shaped plate. The torsion spring of the flipping plate increases its resistance under sudden force, and the reset arc-shaped block decelerates and is limited. Multiple arc-shaped blocks are limited and decelerated in stages to ensure the self-protection capability of the equipment in case of failure and to avoid collisions between parts.

[0016] (3) The present invention, through the setting of the anti-damage device, through the cooperation of the flip plate, plate, pressure plate, extrusion block, L-shaped ball block, U-shaped frame, round rod and friction roller, relies on the impact of the L-shaped ball block to cause the support component to move along the outer wall of the threaded rod with vibration force, thereby reducing the frictional resistance between the two during movement, that is, reducing the difficulty of opening and closing the cover plate, optimizing the user experience of the staff, reducing the wear between the tooth groove and the gear, thereby extending the service life of the equipment; at the same time, ensuring the cleanliness of the area around the hinge shaft of the flip plate, preventing dirt from entering the hinge gap between the flip plate and the H-shaped plate, preventing the flip plate from being damaged and difficult to reset during movement due to dirt obstruction, which would reduce the subsequent limiting effect of the arc block and reduce the protection effect against equipment failure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a cross-sectional schematic diagram of the entire invention; Figure 3 This is a schematic diagram of the peripheral structure of the H-shaped plate of the present invention; Figure 4 This is a schematic diagram of the bottom view of the peripheral structure of the H-shaped plate of the present invention; Figure 5 This is a schematic diagram of the protective device of the present invention; Figure 6 This is a cross-sectional schematic diagram of the protective device of the present invention; Figure 7 This is a schematic diagram of the anti-damage device of the present invention; Figure 8 This is a schematic diagram from the right side of the anti-damage device of the present invention.

[0018] In the diagram: 1. Main body of the device; 2. Limiting plate; 3. Cover plate; 4. Measuring platform; 5. Gear; 6. Threaded rod; 7. Supporting component; 8. U-shaped plate; 9. Friction plate; 10. H-shaped plate; 11. Elastic telescopic frame; 12. Elastic telescopic rod; 13. Protective device; 131. Inclined frame plate; 132. Long frame plate; 133. U-shaped push plate; 134. Telescopic engraving plate; 135. Inclined plate; 136. Arc block; 137. Flipping plate; 14. Damage prevention device; 141. Flat plate; 142. Pressure plate; 143. Extrusion block; 144. L-shaped ball block; 145. U-shaped frame; 146. Round rod; 147. Friction roller. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Please see Figures 1-8 One embodiment of the present invention is as follows: a measuring device for construction project management, comprising a device body 1, two limiting plates 2 symmetrically and fixedly installed inside the top of the device body 1, a cover plate 3 provided inside the two limiting plates 2, a measuring platform 4 slidably installed on the back of the inner wall of the device body 1 via a spring, and the top of the measuring platform 4 contacting the bottom of the cover plate 3, a gear 5 rotatably installed inside one end of the front of the limiting plate 2, a threaded rod 6 passing through and fixedly installed at the bottom of the gear 5, a support component 7 passing through and threadedly connected to the outer wall of the threaded rod 6, a U-shaped plate 8 hinged to the bottom of the support component 7 via a torsion spring, a friction plate 9 hinged to the bottom of the U-shaped plate 8, an H-shaped plate 10 fixedly installed on the side of the support component 7 near the center of the device body 1, a protective device 13 for protecting the entire device provided at the bottom of the H-shaped plate 10, a damage prevention device 14 for preventing damage to parts provided above the protective device 13, an elastic telescopic frame 11 fixedly installed at the top of the H-shaped plate 10, and an elastic telescopic rod 12 fixedly installed inside the elastic telescopic frame 11.

[0021] The device body 1 has a pad at its bottom, the cover plate 3 has toothed grooves at both ends, and a handle is provided at the top of the cover plate 3. The top of the measuring platform 4 has several circular grooves and grooved columns at equal intervals. The gear 5 meshes with the toothed grooves of the cover plate 3. The front and back sides of the support component 7 are slidably connected to the inner wall of the device body 1. The top of the telescopic end of the elastic telescopic frame 11 contacts the bottom of the measuring platform 4, and the top of the telescopic end of the elastic telescopic rod 12 contacts the top of the inner wall of the telescopic end of the elastic telescopic frame 11. Through the above cooperation, the support component 7 facilitates the adjustment of the measuring height of the device body 1, effectively improving the practicality of the equipment and expanding the measuring range. At the same time, the friction plate 9 effectively pushes away small pebbles and soil clods below the support position of the support component 7, promoting... The support component 7 is in horizontal contact with the ground, ensuring that the measuring platform 4 is in a horizontal position. This prevents slight tilting between the support component 7 and the ground due to small pebbles and clods of soil, thus avoiding the acquisition of measurement data from a non-horizontal state. Through the above cooperation, the elastic telescopic frame 11 and elastic telescopic rod 12 and other components provide force support for the measuring platform 4, preventing the suspended end of the measuring platform 4 from falling under the interference of external forces and its own weight. This prevents the probability of the suspended end of the measuring platform 4 tilting downwards over a long period of time, avoiding the measuring platform 4 deviating from the horizontal measurement posture, which would reduce measurement accuracy, increase the measurement preparation time for the staff, and shorten the service life of the measuring platform 4 itself.

[0022] In use, the surveyor places the main body 1 of the device in a suitable position and pushes the cover plate 3 forward. As the cover plate 3 slides forward along the inside of the limiting plate 2, the measuring platform 4, no longer pressed by the cover plate 3, slides upward along the inner wall of the main body 1 by the spring force. When resetting, the cover plate 3 abuts against the inclined surface of the measuring platform 4, causing the measuring platform 4 to slide downward to reset. The staff can place external measuring instruments on the measuring platform 4, or move and stack the groove columns inside the circular groove to perform work such as measuring the distance between buildings and measuring the daylighting of lower-floor residents under sunlight. The toothed grooves at both ends of the cover plate 3 contact the meshing gear 5. As the cover plate 3 moves horizontally, it causes the gear 5 to generate rotational force and begin to rotate. When the gear 5 rotates, it drives the threaded rod 6 to rotate. The threaded rod 6 drives the threaded connection through the threaded groove. The supporting component 7 slides downwards along the inner wall of the main body 1. The supporting component 7 drives the U-shaped plate 8 to move synchronously, and the U-shaped plate 8 drives the friction plate 9 to move synchronously. When the friction plate 9 is flush with the bottom pad of the main body 1 and in contact with the ground, the friction plate 9 continues to move, and the ground resistance causes the top hinge shaft of the U-shaped plate 8 to begin rotating. The U-shaped plate 8 rotates about the hinge shaft in a direction away from the center of the main body 1. At this time, the U-shaped plate 8 drives the friction plate 9 to move synchronously, and the friction plate 9 slides and wipes the ground directly below the supporting component 7. As the supporting component 7 continues to descend, the U-shaped plate 8 sinks into itself and the friction plate 9. At this time, the supporting component 7 contacts the ground and lifts the main body 1 upwards. Through the above coordination, the supporting component 7 facilitates the movement of the main body 1. The change in measurement height effectively improves the practicality of the equipment and expands the measurement range. Simultaneously, the friction plate 9 effectively pushes away small pebbles and clods of soil below the support component 7, ensuring that the support component 7 is in horizontal contact with the ground and that the measuring platform 4 is in a horizontal position. This prevents slight tilting between the support component 7 and the ground due to small pebbles and clods of soil, avoiding the acquisition of measurement data from a non-horizontal state. When the H-shaped plate 10 moves downwards with the support component 7, it drives the elastic telescopic frame 11 to move synchronously. The elastic telescopic frame 11 drives the elastic telescopic rod 12 to move synchronously. In the initial stage of the sliding of the cover plate 3, when the end of the measuring platform 4 connected to the inner wall of the device body 1 is pushed by the spring force, the telescopic end of the elastic telescopic frame 11 is suspended above the measuring platform 4. The bottom of the device is supported. When the device body 1 is carried or moved by the staff, and the device body 1 is bumped during the movement, the telescopic end of the elastic telescopic frame 11 supports and relieves the force on the suspended end of the measuring platform 4. The telescopic end of the elastic telescopic rod 12 distributes the force on the telescopic end of the elastic telescopic frame 11 at multiple points. Through the above cooperation, the force support of the measuring platform 4 is achieved by the elastic telescopic frame 11 and the elastic telescopic rod 12, etc., to prevent the suspended end of the measuring platform 4 from falling under the interference of external forces and its own weight. This prevents the probability of the suspended end of the measuring platform 4 tilting downwards over a long period of time, avoids the measuring platform 4 deviating from the horizontal measurement posture, and avoids reducing the measurement accuracy, increasing the staff's measurement preparation time, and shortening the service life of the measuring platform 4 itself.

[0023] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes a protective device 13; The protective device 13 includes two inclined frame plates 131. The tops of the two inclined frame plates 131 are symmetrically and hinged to the bottom of the H-shaped plate 10 by torsion springs. A long frame plate 132 is fixedly installed on the bottom of the inner wall of the device body 1. A U-shaped push plate 133 is hinged to the outer wall of the bottom end of the inclined frame plate 131 by torsion springs. A telescopic plate 134 is fixedly installed on the outer wall of the device body 1.

[0024] The bottom end of the inclined frame plate 131 is located outside the main body 1 of the device. The top corner of the long frame plate 132 contacts the inclined surface of the inclined frame plate 131. The telescopic plate 134 is fixedly installed inside the U-shaped push plate 133 by a crossbar. With the above cooperation, when the main body 1 of the device is overturned, it is supported by the angle formed between the inclined frame plate 131 and the main body 1 of the device, which improves the protection of the main body 1 of the device and avoids overturning and collision. At the same time, the extension distance of the telescopic plates 134 on both sides can be used to judge whether the main body 1 of the device is placed flat on the ground. If it is not flat, it is easy to adjust in time or to convert the measurement data by the front and rear position difference, which improves the practicality on unpaved roads such as construction sites.

[0025] An inclined plate 135 is hinged inside the inclined frame plate 131 via a torsion spring. The top of the inclined plate 135 contacts the inner wall of the main body 1 of the device. Several arc-shaped blocks 136 are fixedly installed on the side of the inclined plate 135 near the center of the main body 1 of the device. The arc-shaped blocks 136 are evenly distributed on the inclined surface of the inclined plate 135. The inside of both the front and back ends of the H-shaped plate 10 are hinged to a flip plate 137 via a torsion spring. The bottom of the flip plate 137 is located on the movement trajectory of the arc-shaped blocks 136. Through the above cooperation, when the equipment fails and resets during the measurement process, the arc-shaped blocks 136 that move downward suddenly come into contact with the flip plate 137 that moves upward with the H-shaped plate 10. The torsion spring of the flip plate 137 increases the resistance force under sudden force, and the reset arc-shaped blocks 136 are decelerated and limited. Multiple arc-shaped blocks 136 are limited and decelerated in stages to ensure the self-protection capability of the equipment in case of failure and to avoid collision between parts.

[0026] In use, when the H-shaped plate 10 moves downward, it drives the inclined frame plate 131 to move synchronously along the top arc surface of the long frame plate 132 in an inclined posture. When the inclined frame plate 131 contacts the ground, it generates a resisting force. As the H-shaped plate 10 continues to move downward, the bottom inclined surface of the inclined frame plate 131 is limited by the top arc surface of the long frame plate 132, causing the hinge axis between the top of the inclined frame plate 131 and the H-shaped plate 10 to start rotating. The bottom of the inclined frame plate 131 begins to flip upward around the hinge axis, and the inclined frame plate 131 drives the U-shaped push plate 133 to slide upward along the outer wall of the main body 1 of the device. At this time, the top of the U-shaped push plate 133 is subjected to the device The limiting action of the outer wall of the main body 1 causes its own hinge shaft to start rotating. As the inclined frame plate 131 flips, the U-shaped push plate 133 pushes the telescopic plate 134 upward through the crossbar, extending it upward. When the main body 1 is placed on an inclined ground, the two inclined frame plates 131 are not in contact with the ground at the same time, and the long frame plate 132 is not in contact with it at the same time, which will cause the telescopic plate 134 to extend unevenly. Through the above coordination, when the main body 1 is overturned, it is supported by the angle formed between the inclined frame plate 131 and the main body 1, which improves the protection of the main body 1 and avoids overturning and collision. At the same time, it uses the two The extension distance of the side telescopic plate 134 determines whether the device body 1 is placed flat on the ground. If it is not flat, it is easy to adjust in time or convert the measurement data by the front and rear position difference, improving its practicality on unpaved roads such as construction sites. When the inclined frame plate 131 flips, it drives the inclined plate 135 to move synchronously along the inner wall of the device body 1. The inclined plate 135 is limited by the inner wall of the device body 1, causing its own hinge axis to start rotating. At this time, the inclined plate 135 moves upward along the inner wall of the device body 1 and drives the arc block 136 to move synchronously. During the upward movement of the arc block 136, it abuts against the flipping plate 137. The flipping plate 137 abuts against the flipping plate 137. The force inside the H-shaped plate 10 rotates upward around the hinge axis. After a single arc block 136 passes over the flip plate 137, the flip plate 137 resets with the help of a torsion spring. This process is repeated. Through the above cooperation, when the equipment fails and resets during the measurement process, the arc block 136, which moves downward suddenly, comes into contact with the flip plate 137, which moves upward with the H-shaped plate 10. The torsion spring of the flip plate 137 increases its resistance under sudden force, and the reset arc block 136 decelerates and is limited. Multiple arc blocks 136 are limited and decelerated in stages to ensure the self-protection capability of the equipment in case of failure and to avoid collisions between parts.

[0027] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes a damage prevention device 14; The anti-damage device 14 includes two flat plates 141, which are symmetrically and fixedly installed on the side of the support component 7 near the center of the device body 1. A pressure plate 142 is hinged to the top edge of the flip plate 137. The top of the pressure plate 142 contacts the bottom of the flat plate 141. Several extrusion blocks 143 are symmetrically and fixedly installed on the side of the pressure plate 142 near the axis of the H-shaped plate 10. Several L-shaped ball blocks 144 are symmetrically and slidably installed on the top of the H-shaped plate 10 through springs.

[0028] A torsion spring is provided between the bottom of the pressure plate 142 and the edge of the flip plate 137. The support component 7 is located on the movement trajectory of the L-shaped ball block 144 near the H-shaped plate 10. The top of the L-shaped ball block 144 is located on the movement trajectory of the arc surface of the extrusion block 143. The L-shaped ball block 144 is hollow. Through the above cooperation, the impact of the L-shaped ball block 144 causes the support component 7 to move along the outer wall of the threaded rod 6 with vibration force, reducing the frictional resistance between the two during movement. This reduces the difficulty of opening and closing the cover plate 3, optimizes the user experience, and reduces the wear between the tooth groove and the gear 5, thereby extending the service life of the equipment.

[0029] A U-shaped frame 145 is fixedly installed on the side of the L-shaped ball block 144 near the flip plate 137. The bottom of the U-shaped frame 145 contacts the top of the H-shaped plate 10. Several round rods 146 are equidistantly and rotatably installed inside the U-shaped frame 145. Friction rollers 147 are fixedly installed on the outer walls of the round rods 146. The outer walls of the friction rollers 147 contact the top edge of the H-shaped plate 10. The above cooperation ensures the cleanliness of the area around the hinge shaft of the flip plate 137, preventing dirt from entering the hinge gap between the flip plate 137 and the H-shaped plate 10. This prevents the flip plate 137 from being damaged and unable to reset during movement due to dirt obstruction, which would reduce its subsequent limiting effect on the arc block 136 and reduce the protection effect in case of equipment failure.

[0030] In use, when the flip plate 137 flips upward, it drives the pressure plate 142 to move synchronously. When the pressure plate 142 moves upward, it is limited by the bottom of the flat plate 141. At this time, the hinge shaft of the pressure plate 142 begins to rotate and moves downward in an arc trajectory with the hinge shaft as the axis. The pressure plate 142 drives the extrusion block 143 to move synchronously. During the movement, the extrusion block 143 contacts the top spherical surface of the L-shaped ball block 144 and generates a resistance force. The extrusion block 143 pushes the L-shaped ball block 144 to quickly impact the outer wall of the support component 7, generating vibration. Afterward, the extrusion block 143 is reset by the spring force and this step is repeated. Through the above cooperation, relying on the impact of the L-shaped ball block 144, the support component 7 is made to move along the outer wall of the threaded rod 6 with vibration force, reducing the frictional resistance between the two during movement, that is, reducing the difficulty of opening and closing the cover plate 3, optimizing the user experience of the staff, and reducing the friction between the tooth groove and the gear 5. Wear and tear extend the service life of the equipment. When the L-shaped ball block 144 moves away from the center of the H-shaped plate 10, it drives the U-shaped frame 145 to slide synchronously along the top of the H-shaped plate 10. The U-shaped frame 145 drives the round rod 146 to move synchronously. The round rod 146 drives the friction roller 147 to slide along the top of the H-shaped plate 10 to generate friction. The friction roller 147 drives the round rod 146 to rotate along the inside of the U-shaped frame 145. The friction roller 147 rotates and rubs the hinge of the flip plate 137. Through the above cooperation, the cleanliness of the area around the hinge shaft of the flip plate 137 is ensured, and dirt is prevented from entering the hinge gap between the flip plate 137 and the H-shaped plate 10. This prevents the flip plate 137 from being damaged and difficult to reset during the movement due to dirt obstruction, which would reduce the subsequent limiting effect of the arc block 136 and reduce the protection effect in case of equipment failure.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A measuring device for construction project management, comprising a device body (1), characterized in that: Two limiting plates (2) are symmetrically and fixedly installed inside the top of the main body (1) of the device. A cover plate (3) is provided inside the two limiting plates (2). A measuring platform (4) is slidably installed on the back of the inner wall of the main body (1) by a spring. The top of the measuring platform (4) is in contact with the bottom of the cover plate (3). A gear (5) is rotatably installed inside one end of the front of the limiting plate (2). A threaded rod (6) is fixedly installed through the bottom of the gear (5). A support component (7) is threaded through the outer wall of the threaded rod (6). The bottom of the support component (7) is open to the outside of the threaded rod (6). A U-shaped plate (8) is hinged to a torsion spring, and a friction plate (9) is hinged to the bottom of the U-shaped plate (8). An H-shaped plate (10) is fixedly installed on the side of the support component (7) near the center of the main body (1). A protective device (13) is provided at the bottom of the H-shaped plate (10) to protect the whole device. A damage prevention device (14) is provided above the protective device (13) to prevent damage to parts. An elastic telescopic frame (11) is fixedly installed on the top of the H-shaped plate (10). An elastic telescopic rod (12) is fixedly installed inside the elastic telescopic frame (11).

2. The measuring device for construction project management according to claim 1, characterized in that: The device body (1) has a pad at the bottom, the cover plate (3) has a toothed groove design at both ends, and a handle is provided at the top of the cover plate (3). The measuring platform (4) has several circular grooves and groove columns equidistantly opened at the top. The gear (5) meshes with the toothed groove of the cover plate (3). The support component (7) is slidably connected to the inner wall of the device body (1) on both the front and back sides. The top of the telescopic end of the elastic telescopic frame (11) contacts the bottom of the measuring platform (4), and the top of the telescopic end of the elastic telescopic rod (12) contacts the top of the inner wall of the telescopic end of the elastic telescopic frame (11).

3. A measuring device for construction project management according to claim 2, characterized in that: The protective device (13) includes two inclined frame plates (131). The tops of the two inclined frame plates (131) are symmetrically and hinged to the bottom of the H-shaped plate (10) by torsion springs. A long frame plate (132) is fixedly installed on the bottom of the inner wall of the device body (1). A U-shaped push plate (133) is hinged to the outer wall of the bottom end of the inclined frame plate (131) by torsion springs. A telescopic plate (134) is fixedly installed on the outer wall of the device body (1).

4. A measuring device for construction project management according to claim 3, characterized in that: The bottom end of the inclined frame plate (131) is located outside the main body (1) of the device. The top corner of the long frame plate (132) is in contact with the inclined surface of the inclined frame plate (131). The telescopic end of the telescopic plate (134) is fixedly installed inside the U-shaped push plate (133) by a crossbar.

5. A measuring device for construction project management according to claim 4, characterized in that: The inclined frame plate (131) is hinged with an inclined plate (135) inside by a torsion spring. The top of the inclined plate (135) is in contact with the inner wall of the main body (1) of the device. Several arc-shaped blocks (136) are fixedly installed on the side of the inclined plate (135) near the center of the main body (1). Several arc-shaped blocks (136) are evenly distributed on the inclined surface of the inclined plate (135). The H-shaped plate (10) has a flip plate (137) hinged with a torsion spring inside both the front and back ends. The bottom of the flip plate (137) is located on the movement trajectory of the arc-shaped blocks (136).

6. A measuring device for construction project management according to claim 5, characterized in that: The anti-damage device (14) includes two flat plates (141). The two flat plates (141) are symmetrically and fixedly installed on the side of the support component (7) near the center of the device body (1). A pressure plate (142) is hinged at the top edge of the flip plate (137). The top of the pressure plate (142) contacts the bottom of the flat plate (141). Several extrusion blocks (143) are symmetrically and fixedly installed on the side of the pressure plate (142) near the axis of the H-shaped plate (10). Several L-shaped ball blocks (144) are symmetrically and slidably installed on the top of the H-shaped plate (10) through springs.

7. A measuring device for construction project management according to claim 6, characterized in that: A torsion spring is provided between the bottom of the pressure plate (142) and the edge of the flip plate (137). The support member (7) is located on the movement trajectory of the L-shaped ball block (144) on the side near the H-shaped plate (10). The top of the L-shaped ball block (144) is located on the arc movement trajectory of the extrusion block (143), and the L-shaped ball block (144) is hollow.

8. A measuring device for construction project management according to claim 7, characterized in that: A U-shaped frame (145) is fixedly installed on the side of the L-shaped ball block (144) near the flip plate (137). The bottom of the U-shaped frame (145) is in contact with the top of the H-shaped plate (10). Several round rods (146) are equidistantly and rotatably installed inside the U-shaped frame (145). Friction rollers (147) are fixedly installed on the outer walls of the round rods (146). The outer walls of the friction rollers (147) are in contact with the top edge of the H-shaped plate (10).

Images