Applicable to earthwork backfill elevation measurement device for large-scale foundation pits or trenches

Abstract

The present invention discloses an earthwork backfill elevation measurement device suitable for large-scale foundation pits or trenches, comprising a base, a plurality of fixed cones provided on the lower surface of the base, a laser pointer, a column fixedly mounted on the upper surface of the base, a sleeve sleeved on the column, a top plate fixedly mounted on the sleeve, a photosensitive sensor fixedly mounted on the upper end surface of the column, a distance measuring sensor fixedly mounted on the upper surface of the base, a stepper motor fixedly mounted on the rotating shaft of the stepper motor, a bevel gear 1 fixedly mounted on the transmission shaft, the bevel gear 1 meshing with the bevel gear 2, a screw rod fixedly connected to the upper end of the transmission shaft, a nut seat installed on the screw rod, and the side surface of the nut seat fixedly connected to the side surface of the sleeve via a connecting rod. The beneficial effects of the present invention are that it is suitable for measurement environments with large foundation pits or trenches, and the measurement process is simple and practical.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to an earth backfill elevation measuring device suitable for large-sized foundation pits or trenches. Background Art

[0002] Backfill soil refers to the soil that is returned to the ground after the foundation and other below-ground works are completed during construction. In order to ensure that there will be no problems such as settlement cracks after the backfill construction, engineering personnel must accurately grasp the elevation of the backfill before backfilling, so as to accurately calculate the amount of backfill, and avoid the problem of uneven bottom surface caused by too much or too little earthwork. The elevation of the backfill soil is obtained by subtracting the height of the project bottom from the height of the road and then subtracting the height of the road structure. Therefore, the determination of the bottom height of the project is the basis for determining the elevation of the backfill soil. In the existing construction process, engineering personnel generally measure the elevation of the backfill soil for objects that need to be backfilled, such as road surfaces and foundation pits, manually. The process is relatively cumbersome, and the measurement accuracy of this method is easily affected by human factors. The measurement results are not accurate and cannot meet the increasingly high construction needs.

[0003] In order to solve the above problems, technicians in this field have designed an automatic elevation measurement device, which is generally installed at the opening of a foundation pit or trench, and measures the elevation of the backfill by optical ranging, thereby solving the problem that the manual measurement process is cumbersome and the measurement accuracy is easily affected by human factors. However, when the foundation pit or the trench dug for road construction is too large, the existing automatic measurement device is difficult to fix and install, and cannot meet the measurement requirements of the backfill elevation of large foundation pits or large trenches. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and to design an earthwork backfill elevation measuring device suitable for large-sized foundation pits or trenches.

[0005] A device for measuring the elevation of earthwork backfill suitable for large-scale foundation pits or trenches comprises a base, a plurality of fixed cones are provided on the lower surface of the base, and a laser pointer is provided above the base, and a light beam emitted by the laser pointer is parallel to the upper surface of the base.

[0006] A column is fixedly installed on the upper surface of the base, the column is perpendicular to the upper surface of the base and is located at the center of the upper surface of the base, a sleeve is sleeved on the column, a top plate is fixedly installed on the sleeve, the column is perpendicular to the top plate, the top plate is close to the top of the column, and a photosensor is fixedly installed on the upper end surface of the column, and the photosensor sends a signal to the control terminal through a wire;

[0007] A distance measuring sensor is fixedly mounted on the upper surface of the base, the distance measuring sensor is connected to the mobile terminal via a wireless communication module, the distance measuring sensor faces upwards towards the lower surface of the top plate, the distance measuring sensor is embedded in the base, the top surface of the distance measuring sensor is flush with the upper surface of the base, the distance measuring sensor measures the distance between the lower surface of the top plate and the upper surface of the base, and the distance measuring sensor is located on one side of the column;

[0008] A motor mounting bracket is fixedly mounted on the upper surface of the base, and a stepper motor is fixedly mounted on the motor mounting bracket. The rotating shaft of the stepper motor is parallel to the upper surface of the base, and a bevel gear 1 is fixedly mounted on the rotating shaft of the stepper motor. A bearing seat is also fixedly mounted on the upper surface of the base, and the bearing seat is located between the bevel gear and the column. A transmission shaft is mounted on the bearing seat, and the transmission shaft is parallel to the column. A bevel gear 2 is fixedly mounted on the transmission shaft, and the bevel gear 1 is meshed with the bevel gear 2. The upper end of the transmission shaft is fixedly connected to a screw rod, and the center line of the screw rod and the center line of the transmission shaft are located in a straight line. A nut seat is mounted on the screw rod, and the side surface of the nut seat is fixedly connected to the side surface of the sleeve through a connecting rod. The stepper motor is connected to a control terminal through an encoder, and the control terminal controls the number of revolutions of the stepper motor through the encoder.

[0009] The laser pointer is located above the top plate, and ensures that when the top plate rises to the height where the laser pointer is located, the photosensor can receive the light beam of the laser pointer.

[0010] A limiting plate is provided at the top end of the screw rod. The limiting plate is a circular plate, and the diameter of the limiting plate is twice the diameter of the screw rod.

[0011] The rotating shaft of the stepper motor points to the column, and the stepper motor, the bearing seat and the column are arranged in a straight line.

[0012] A transparent protective cover is fixedly mounted on the upper surface of the base, and the protective cover buckles the distance measuring sensor.

[0013] The sleeve is a round tube with a sealed top and an open bottom.

[0014] The fixed cone includes a column and a conical head fixedly installed on the lower surface of the column, and the upper end of the column is fixedly connected to the lower surface of the base.

[0015] There are five fixed cones, one of which is installed at the center of the lower surface of the base, and the remaining four fixed cones are installed at the four corners of the lower surface of the base.

[0016] The base is a rectangular plate structure, and a plurality of counterweights can be fixedly mounted on the side surface of the base by screws.

[0017] Beneficial effects

[0018] The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches manufactured using the technical solution of the present invention has the following advantages:

[0019] 1. This device replaces the original method of installing the device at the bottom of the foundation pit or trench with the method of installing the device at the opening of the foundation pit or trench, thereby avoiding the technical problem of inconvenient installation of the device when the foundation pit or trench is too large, and ensuring the measurement of the earth backfill elevation of large foundation pits or trenches;

[0020] 2. This device realizes the function of automatically measuring the height of the engineering base through the cooperation of optical rangefinder and stepper motor, etc., without manual measurement, thus eliminating the influence of human factors on the measurement results to the greatest extent and ensuring the accuracy of the measurement;

[0021] 3. The device has a simple structural design, low manufacturing cost, strong practicality and market competitiveness, and can be widely used in measuring the earth backfill elevation of different projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the earthwork backfill elevation measuring device applicable to large-sized foundation pits or trenches according to the present invention;

[0023] Figure 2 It is a structural schematic diagram of the lower surface of the base of the present invention;

[0024] In the figure, 1. Base; 2. Fixed cone; 3. Laser pointer; 4. Column; 5. Casing; 6. Top plate; 7. Photosensitive sensor; 8. Distance sensor; 9. Motor mounting bracket; 10. Stepper motor; 11. Bevel gear 1; 12. Bearing seat; 13. Drive shaft; 14. Bevel gear 2; 15. Screw; 16. Nut seat; 17. Connecting rod; 18. Limit plate. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-2 As shown;

[0026] The invention of the present application lies in that a column 4 is fixedly mounted on the upper surface of the base, the column being perpendicular to the upper surface of the base and located at the center of the upper surface of the base, a sleeve 5 is sleeved on the column, a top plate 6 is fixedly mounted on the sleeve, the column being perpendicular to the top plate, the top plate being close to the top of the column, and a photosensor 7 is fixedly mounted on the upper end surface of the column, the photosensor sending a signal to a control terminal via a wire;

[0027] The invention of the present application also lies in that a distance measuring sensor 8 is fixedly mounted on the upper surface of the base, the distance measuring sensor is connected to the mobile terminal via a wireless communication module, the distance measuring sensor faces upward to the lower surface of the top plate, the distance measuring sensor is embedded in the base, the top surface of the distance measuring sensor is flush with the upper surface of the base, the distance measuring sensor measures the distance between the lower surface of the top plate and the upper surface of the base, and the distance measuring sensor is located on one side of the column;

[0028] The creative point of the present application is that a motor mounting frame 9 is fixedly installed on the upper surface of the base, a stepper motor 10 is fixedly installed on the motor mounting frame, the rotating shaft of the stepper motor is parallel to the upper surface of the base, a bevel gear 11 is fixedly installed on the rotating shaft of the stepper motor, a bearing seat 12 is also fixedly installed on the upper surface of the base, the bearing seat is located between the bevel gear and the column, a transmission shaft 13 is installed on the bearing seat, the transmission shaft is parallel to the column, a bevel gear 2 14 is fixedly installed on the transmission shaft, the bevel gear 1 is meshed with the bevel gear 2, the upper end of the transmission shaft is fixedly connected to a screw rod 15, the center line of the screw rod and the center line of the transmission shaft are located in a straight line, a nut seat 16 is installed on the screw rod, the side surface of the nut seat is fixedly connected to the side surface of the sleeve through a connecting rod 17, the stepper motor is connected to the control terminal through an encoder, and the control terminal controls the number of revolutions of the stepper motor through the encoder.

[0029] The electronic devices used in this technical solution include:

[0030] Stepper motor: The stepper motor is connected to the control terminal through an encoder. The control terminal sends control instructions to the encoder. After receiving the control instructions, the encoder converts them into the corresponding step number, and then controls the stepper motor to rotate a certain angle. The nut seat will move a certain distance along the screw rod under the limit action of the connecting rod;

[0031] Distance sensor: optional laser distance sensor or infrared distance sensor;

[0032] Laser pointer: can emit a laser beam to illuminate the photosensitive sensor;

[0033] Photosensitive sensor: After being irradiated by the laser beam, it generates a corresponding analog signal. The analog signal is sent to the control terminal through the wire and converted into a corresponding digital signal. After receiving the signal, the control terminal will control the stepper motor to stop.

[0034] The above electronic devices are all existing products. The technical solution of this application has no special requirements or changes to the structures of the above electronic devices. The above electronic devices are all conventional electronic devices.

[0035] During the implementation of this technical solution, personnel in this field need to connect all electrical components in this case to their corresponding power supplies through wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between each electrical component is completed in the order of working. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0036] The invention of the present application also lies in that the laser pointer is located above the top plate and ensures that when the top plate rises to the height of the laser pointer, the photosensor can receive the light beam of the laser pointer; a limit plate 18 is provided at the top end of the screw rod, and the limit plate is a circular plate with a diameter twice the diameter of the screw rod; the rotating shaft of the stepper motor points to the column, and the stepper motor, bearing seat and column are arranged in a straight line; a transparent protective cover is fixedly installed on the upper surface of the base, and the protective cover buckles the distance measuring sensor; the sleeve is a circular tube with a sealed top and an open bottom; the fixed cone includes a column and a conical head fixedly installed on the lower surface of the column, and the upper end of the cylinder is fixedly connected to the lower surface of the base; there are five fixed cones, one of which is installed at the center of the lower surface of the base, and the other four are installed at the four corners of the lower surface of the base; the base is a rectangular plate structure, and a number of counterweights can be fixed on the side surface of the base by screws.

[0037] During the implementation of the technical solution of the present application, the laser pointer is first fixedly installed at the opening of the foundation pit or trench, and it is ensured that when the top end face of the column is flush with the opening of the foundation pit or trench, the laser pointer can illuminate the photosensitive sensor; the bottom surface of the foundation pit or trench is leveled, and then the base is placed on the bottom surface of the foundation pit or trench, and the fixing cone is inserted into the bottom surface of the foundation pit or trench, and then the base is compacted with force; the initial value of the distance sensor is set to the thickness value of the base through the mobile terminal, and then the stepper motor is started through the control terminal, and the number of revolutions of the motor is controlled by the control terminal and the encoder. Thereby achieving the technical effect of the nut seat slowly rising on the screw rod. When the top end face of the column rises to the plane where the foundation pit or trench opening is located, the photosensitive sensor receives the laser emitted by the laser pointer and generates an analog model and sends it to the control terminal. The control terminal controls the stepper motor to stop. At this time, the mobile terminal receives the measurement distance parameter transmitted by the ranging sensor. The staff sums the initial value of the ranging sensor, the measurement distance parameter of the ranging sensor, the thickness of the top plate, and the distance value between the top plate and the top of the column to obtain the elevation of the backfill, thereby completing the automated measurement process of the backfill elevation.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0039] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Any changes that may be made to certain parts thereof by those skilled in the art all reflect the principles of the present invention and fall within the scope of protection of the present invention.

Claims

1. A device for measuring the elevation of earthwork backfill suitable for large-scale foundation pits or trenches, comprising a base (1), a plurality of fixed cones (2) provided on the lower surface of the base, and a laser pointer (3), the laser pointer being located above the base and emitting a light beam parallel to the upper surface of the base, characterized in that: A column (4) is fixedly mounted on the upper surface of the base, the column is perpendicular to the upper surface of the base and the column is located at the center of the upper surface of the base, a sleeve (5) is sleeved on the column, a top plate (6) is fixedly mounted on the sleeve, the column is perpendicular to the top plate, the top plate is close to the top of the column, a light sensor (7) is fixedly mounted on the upper end surface of the column, the light sensor sends a signal to the control terminal through a wire; a distance sensor (8) is fixedly mounted on the upper surface of the base, the distance sensor is connected to the mobile terminal through a wireless communication module, the distance sensor faces the lower surface of the top plate upward, the distance sensor is embedded in the base, the top surface of the distance sensor is flush with the upper surface of the base, the distance sensor measures the distance between the lower surface of the top plate and the upper surface of the base, and the distance sensor is located on one side of the column; a motor mounting frame is fixedly mounted on the upper surface of the base (9), a stepper motor (10) is fixedly mounted on the motor mounting frame, the rotating shaft of the stepper motor is parallel to the upper surface of the base, a bevel gear 1 (11) is fixedly mounted on the rotating shaft of the stepper motor, a bearing seat (12) is also fixedly mounted on the upper surface of the base, the bearing seat is located between the bevel gear and the column, a transmission shaft (13) is mounted on the bearing seat, the transmission shaft is parallel to the column, a bevel gear 2 (14) is fixedly mounted on the transmission shaft, the bevel gear 1 is meshed with the bevel gear 2, the upper end of the transmission shaft is fixedly connected to a screw rod (15), the center line of the screw rod and the center line of the transmission shaft are located on a straight line, a nut seat (16) is mounted on the screw rod, the side surface of the nut seat is fixedly connected to the side surface of the sleeve through a connecting rod (17), the stepper motor is connected to a control terminal through an encoder, and the control terminal controls the number of revolutions of the stepper motor through the encoder.

2. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: The laser pointer is located above the top plate, and ensures that when the top plate rises to the height where the laser pointer is located, the photosensor can receive the light beam of the laser pointer.

3. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: A limiting plate (18) is provided at the top end of the screw rod. The limiting plate is a circular plate, and the diameter of the limiting plate is twice the diameter of the screw rod.

4. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: The rotating shaft of the stepper motor points to the column, and the stepper motor, the bearing seat and the column are arranged in a straight line.

5. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: A transparent protective cover is fixedly mounted on the upper surface of the base, and the protective cover buckles the distance measuring sensor.

6. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: The sleeve is a round tube with a sealed top and an open bottom.

7. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1 is characterized in that: The fixed cone includes a column and a conical head fixedly installed on the lower surface of the column, and the upper end of the column is fixedly connected to the lower surface of the base.

8. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 7 is characterized in that: There are five fixed cones, one of which is installed at the center of the lower surface of the base, and the remaining four fixed cones are installed at the four corners of the lower surface of the base.

9. The earthwork backfill elevation measuring device suitable for large-scale foundation pits or trenches according to claim 1, characterized in that: The base is a rectangular plate structure, and a plurality of counterweights can be fixedly mounted on the side surface of the base by screws.

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