A slope measuring device for building engineering

Abstract

This invention relates to the field of slope measurement technology, specifically to a slope measurement device for construction engineering. It includes a base comprising a cross-shaped support frame, a slope top pointing component, and a lifting control frame. The cross-shaped support frame is an adjustable cross plate frame. The slope top pointing component is located at one end of the cross-shaped support frame, and the lifting control frame is located at the center of the cross-shaped support frame and perpendicular to it. This invention allows the entire cross-shaped support frame to be flush with and parallel to the slope surface, with the bottom contact pad of the stationary frame also flush with the slope surface. The telescopic pendulum frame remains vertical under gravity. By adjusting the length of the telescopic pendulum frame so that the bottom counterweight block is flush with the slope surface, and then measuring the distance between the counterweight block and the bottom contact pad using a displacement sensor, the slope can be calculated by dividing the distance by the height of the stationary frame and the bottom contact pad, thus quickly determining the slope of the entire slope.

Description

Technical Field

[0001] This invention relates to the field of slope measurement technology, and more particularly to a slope measurement device for building engineering. Background Technology

[0002] There are two main methods for measuring slope: leveling and instrumental measurement.

[0003] Leveling is a relatively simple and accurate method suitable for measuring slopes over small areas. Its principle is based on a horizontal reference. A starting and ending point for the slope is selected, and a level is set up at the starting point, ensuring it is horizontal. A level is also set up at the ending point, ensuring it is on the same horizontal plane as the starting point. The height difference and horizontal distance between the starting and ending points are measured using surveying tools, and the slope is calculated based on these measurements.

[0004] In practice, it is necessary to ensure the accuracy and stability of the spirit level, and to minimize external interference during measurement. This method is applicable to various environments, whether flat or rugged terrain, as long as a stable support point and a suitable measurement distance can be found.

[0005] In construction engineering, slope measurement is a crucial step in ensuring construction quality. When using leveling methods for slope measurement, encountering rugged terrain and the inability to find stable support points and suitable measurement distances can create difficulties. Furthermore, while traditional leveling methods offer high accuracy, they are complex to operate and inefficient. Existing electronic slope meters suffer from high cost and limited functionality. Therefore, designing a slope measurement device based on physical sensors and leveling methods is of significant practical importance. Summary of the Invention

[0006] The purpose of this invention is to provide a slope measuring device for building engineering, which can simply and efficiently measure the slope when a stable support point and a suitable measuring distance cannot be found.

[0007] To achieve the above objectives, the present invention provides a slope measuring device for building engineering, including a mounting base. The mounting base includes a cross plate frame, a slope top pointing component, and a lifting control frame. The cross plate frame is an adjustable cross plate frame. The slope top pointing component is located at one end of the cross plate frame. The lifting control frame is located at the center of the cross plate frame and is perpendicular to the cross plate frame.

[0008] A horizontal bubble tube and a slope measuring mechanism are provided. The horizontal bubble tube is located at the center of the end frame of the lifting control frame. The slope measuring mechanism includes a pendulum measuring component and a distance sensing component. The pendulum measuring component is located on one side of the end frame of the lifting control frame.

[0009] The pendulum measuring assembly includes a base frame and a telescopic pendulum frame. The base frame is fixedly installed on one side of the end frame of the lifting control frame, and the telescopic pendulum frame is rotatably installed on one side of the end frame of the lifting control frame. The base frame, the telescopic pendulum frame, and the horizontal bubble tube rotate around the same axis. The distance sensing assembly is installed at the bottom of the base frame and the telescopic pendulum frame to measure the distance between the ends of the base frame and the telescopic pendulum frame.

[0010] As a further improvement to this technical solution, the lifting control frame includes a lifting base and a mounting plate. The lifting base is located at the center of the cross pad, and the mounting plate is located on the lifting end of the lifting base and is parallel to the cross pad. An installation slot is provided in the center of the mounting plate, and the horizontal bubble tube is located inside the installation slot. The pendulum measuring component is located on one side of the mounting plate and rotates coaxially with the horizontal bubble tube.

[0011] As a further improvement to this technical solution, the lifting platform includes multiple lifting plates, and the multiple plates of the lifting platform are closely connected.

[0012] As a further improvement to this technical solution, the horizontal bubble tube includes a bubble tube body and a rotating base shaft. The rotating base shaft is disposed on the inner side wall of the mounting groove in the center of the mounting plate, and the center of the bubble tube body is disposed on the rotating base shaft.

[0013] As a further improvement to this technical solution, the base frame includes a stationary frame and a bottom-contact pad. The stationary frame is set on one side of the mounting plate via a fixed shaft, and the bottom-contact pad is fixedly set at the bottom end of the stationary frame, with the bottom end of the bottom-contact pad being a plane.

[0014] As a further improvement to this technical solution, the telescopic pendulum frame includes a telescopic frame body and a counterweight block set at the bottom of the telescopic frame body. The telescopic frame body is a multi-segment telescopic metal frame body, and the end of the telescopic frame body is connected to a fixed shaft body that connects the stationary frame and the mounting horizontal plate. The bottom end of the counterweight block has an arc-shaped edge.

[0015] The telescopic pendulum frame has its telescopic frame end rotatably mounted on a fixed shaft that connects the stationary frame and the mounting plate via a low-friction bearing, and an angle gauge for reading is provided at the contact point between the low-friction bearing and the mounting plate.

[0016] As a further improvement to this technical solution, the distance sensing component includes a positioning beam and a displacement sensor. The positioning beam is located at the bottom end of the bottom contact pad, and the displacement sensor is located at the bottom end of the counterweight block of the telescopic pendulum frame, with the displacement sensor in contact with the positioning beam.

[0017] The positioning beam is parallel to the bottom end of the bottom contact pad, and the displacement sensor is parallel to the bottom end of the counterweight block of the telescopic pendulum frame.

[0018] As a further improvement to this technical solution, the cross pad frame includes a transverse pad and a longitudinal pad, both of which are metal pads, and the longitudinal pad is tightly inserted into the center of the transverse pad, so that the entire cross pad frame has an adjustable transverse and longitudinal length. The pointing end of the slope top pointing component is on the same plane as the transverse pad.

[0019] As a further improvement to this technical solution, the slope top pointing component includes a laser pointing element and an adjustable pad frame. The laser pointing element is disposed on one side of the transverse pad plate, and the adjustable pad frame is disposed at the lower end of one side of the transverse pad plate.

[0020] The laser line emitted by the laser pointing device is parallel to the transverse pad.

[0021] As a further improvement to this technical solution, the adjustable pad frame includes an adjustment control and a bottom-contact pad frame. The adjustment control is fixedly mounted on the horizontal pad plate, and the movable end of the adjustment control is slidably mounted on the plate body of the horizontal pad plate. The bottom-contact pad frames are arranged in groups of four below the movable end of the adjustment control. The bottom-contact pad frame is a retractable pad frame, and the adjustment control is a device that is pushed by an electric actuator.

[0022] Compared with the prior art, the present invention provides a slope measuring device for building engineering, which has the following beneficial effects:

[0023] This invention allows the entire cross-shaped support frame to be placed parallel to the slope surface, with the bottom contact pad at the base of the stationary frame also in contact with the slope. The telescopic pendulum frame remains vertical under gravity. The length of the telescopic pendulum frame is adjusted so that the bottom counterweight block is in contact with the slope surface. The distance between the counterweight block and the bottom contact pad is measured by a displacement sensor. The slope can then be calculated by dividing the distance by the height of the stationary frame and the bottom contact pad, thus quickly determining the slope of the entire slope.

[0024] In addition, if the slope is undulating, the length of the bottom contact pad can be adjusted, and the position of the adjustment control and the bottom contact pad on the transverse pad can be adjusted so that the bottom end of the bottom contact pad touches the undulating part. Finally, the laser line emitted by the laser pointing component at the end of the transverse pad can point to the top of the slope, so that the entire cross pad is parallel to the two points at the beginning and end of the slope. This allows the slope measurement structure to be placed parallel to the slope when a stable support point cannot be found. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the overall structure of the present invention on a slope.

[0029] Figure 5 for Figure 4 Enlarged view of the structure at point B in the middle;

[0030] Figure 6 This is a schematic diagram of the overall structure of the present invention from a third perspective;

[0031] Figure 7 This is a schematic diagram of the overall structure of the present invention during slope measurement;

[0032] Figure 8 This is a schematic diagram of the overall structure of the present invention when measuring undulating slopes.

[0033] In the diagram: 1. Cross-shaped support frame; 101. Horizontal support plate; 102. Longitudinal support plate; 2. Slope top pointing component; 21. Laser pointing component; 22. Adjustable support frame; 221. Adjustment control; 222. Bottom contact support frame; 3. Lifting control frame; 31. Lifting base; 32. Mounting horizontal plate; 4. Horizontal bubble tube; 41. Bubble tube body; 42. Rotating base shaft; 5. Pendulum measuring component; 51. Base fixed frame; 511. Stationary fixed frame; 512. Bottom contact block; 52. Telescopic pendulum frame; 6. Distance sensing component; 61. Positioning beam; 62. Displacement sensor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1 and Figure 2 A slope measuring device for construction engineering is provided to measure the slope even when a stable support point and a suitable measuring distance cannot be found. The device includes a mounting base, a horizontal bubble tube 4, and a slope measuring mechanism. The mounting base includes a cross plate 1, a slope top pointing component 2, and a lifting control frame 3. The cross plate 1 is an adjustable cross plate frame. The slope top pointing component 2 is located at one end of the cross plate 1. The lifting control frame 3 is located at the center of the cross plate 1 and is perpendicular to the cross plate 1.

[0036] The horizontal bubble tube 4 is located at the center of the end frame of the lifting control frame 3. The slope measuring mechanism includes a pendulum measuring component 5 and a distance sensing component 6. The pendulum measuring component 5 is located on one side of the end frame of the lifting control frame 3.

[0037] The pendulum measuring component 5 includes a base frame 51 and a telescopic pendulum frame 52. The base frame 51 is fixedly installed on one side of the end frame of the lifting control frame 3, and the telescopic pendulum frame 52 is rotatably installed on one side of the end frame of the lifting control frame 3. The base frame 51, the telescopic pendulum frame 52 and the horizontal bubble tube 4 rotate around the same axis. The distance sensing component 6 is installed at the bottom of the base frame 51 and the telescopic pendulum frame 52 to measure the distance between the ends of the base frame 51 and the telescopic pendulum frame 52.

[0038] like Figure 2 As shown, the lifting control frame 3 includes a lifting base 31 and a mounting plate 32. The lifting base 31 is located in the center of the cross pad 1, and the mounting plate 32 is located on the lifting end of the lifting base 31. The mounting plate 32 is parallel to the cross pad 1. A mounting groove is provided in the center of the mounting plate 32. A horizontal bubble tube 4 is located inside the mounting groove. A pendulum measuring component 5 is located on one side of the mounting plate 32. The pendulum measuring component 5 rotates coaxially with the horizontal bubble tube 4. When the cross pad 1 is set against the slope surface, the mounting plate 32 can be parallel to the slope surface. At this time, it is convenient for the horizontal bubble tube 4 and the pendulum measuring component 5 on the mounting plate 32 to determine the slope surface inclination angle and calculate the distance.

[0039] The lifting platform 31 includes multiple lifting plates, and the multiple plates of the lifting platform 31 are closely connected, so that the lifting platform 31 can be controlled to extend and retract, thereby adjusting the distance between the mounting plate 32 and other measuring structures on the mounting plate 32 and the cross pad 1. When the lifting platform 31 is shortened to its shortest length, the bottom end of the base frame 51 and the pointing part of the slope top pointing component 2 at the end of the cross pad 1 are on the same plane.

[0040] like Figure 3 As shown, the horizontal bubble tube 4 includes a bubble tube body 41 and a rotating base shaft 42. The rotating base shaft 42 is set on the inner side wall of the mounting groove in the center of the mounting plate 32. The center of the bubble tube body 41 is set on the rotating base shaft 42, so that when the entire mounting plate 32 is tilted on the slope along with the cross pad 1, the bubble tube body 41 can remain horizontal under the rotation of the rotating base shaft 42, forming a horizontal base point to help confirm the horizontal plane.

[0041] like Figure 5 and Figure 6As shown, the base frame 51 includes a stationary frame 511 and a bottom contact pad 512. The stationary frame 511 is set on one side of the mounting plate 32 by a fixed shaft. The bottom contact pad 512 is fixedly set at the bottom end of the stationary frame 511, and the bottom end of the bottom contact pad 512 is flat.

[0042] The telescopic pendulum frame 52 includes a telescopic frame body and a counterweight block set at the bottom of the telescopic frame body. The telescopic frame body is a multi-segment telescopic metal frame body, and the end of the telescopic frame body is connected to the fixed shaft body that connects the stationary frame 511 and the mounting plate 32. The bottom end of the counterweight block has an arc-shaped edge.

[0043] The telescopic pendulum frame 52 is rotatably mounted on a fixed shaft that connects the stationary frame 511 and the mounting plate 32 via a low-friction bearing. An angle gauge for reading is provided at the contact point between the low-friction bearing and the mounting plate 32, so that the telescopic pendulum frame 52 can remain vertical under the action of gravity. The angle between the base frame 51 and the telescopic pendulum frame 52 can be obtained through the angle gauge.

[0044] like Figure 5 As shown, the distance sensing component 6 includes a positioning beam 61 and a displacement sensor 62. The positioning beam 61 is located at the bottom of the bottom contact pad 512, and the displacement sensor 62 is located at the bottom of the counterweight block of the telescopic pendulum frame 52, and the displacement sensor 62 is attached to the positioning beam 61.

[0045] The positioning beam 61 is parallel to the bottom end of the bottom contact pad 512, and the displacement sensor 62 is parallel to the bottom end of the counterweight block of the telescopic pendulum frame 52, so that when the counterweight block of the telescopic pendulum frame 52 rotates and moves away from the bottom contact pad 512, the displacement sensor 62 can measure the distance between the counterweight block and the bottom contact pad 512.

[0046] like Figure 7 and Figure 8 As shown, it should be clarified that slope calculations are generally performed by converting the horizontal length and vertical width of the slope, such as... Figure 7 and Figure 8 As shown, the slope I = vertical height H / horizontal length L is used to obtain the slope. Since the stationary frame 511 and the bottom pad 512 are perpendicular to the slope, when the telescopic pendulum frame 52 remains vertical under the action of gravity, the distance h between the bottom counterweight block and the bottom pad 512 of the telescopic pendulum frame 52 is equivalent to the vertical height H, and the height l of the stationary frame 511 and the bottom pad 512 is equivalent to the horizontal length L. At this time, the slope can be calculated.

[0047] This method of calculating slope allows for quick calculation of slope even when a suitable measurement distance is unavailable.

[0048] like Figure 4 As shown, the cross-shaped support frame 1 includes a transverse support plate 101 and a longitudinal support plate 102. Both the transverse support plate 101 and the longitudinal support plate 102 are metal support plates, and the longitudinal support plate 102 is tightly inserted into the center of the transverse support plate 101, so that the entire cross-shaped support frame 1 has an adjustable transverse and longitudinal length. The pointing end of the slope top pointing component 2 is on the same plane as the transverse support plate 101. It should be noted that the longitudinal support plate 102 can be pulled out from the transverse support plate 101, so that the slope can be placed independently through the transverse support plate 101 to adapt to the slope.

[0049] like Figure 8 As shown, the slope top pointing component 2 includes a laser pointing component 21 and an adjustable pad 22. The laser pointing component 21 is disposed on one side of the transverse pad 101, and the adjustable pad 22 is disposed at the lower end of one side of the transverse pad 101.

[0050] The laser line emitted by the laser pointer 21 is parallel to the transverse pad 101, and the laser line emitted by the laser pointer 21 is attached to the bottom of the bottom pad 512. When it is necessary to make the entire device parallel to the slope, the laser line emitted by the laser pointer 21 can be used to straighten the top of the slope. At this time, the transverse pad 101 and the bottom pad 512 can be regarded as parallel to the slope.

[0051] like Figure 8 As shown, the adjustable pad 22 includes an adjustment control 221 and a bottom-contact pad 222. The adjustment control 221 is fixedly mounted on the transverse pad 101, and the movable end of the adjustment control 221 is slidably mounted on the plate of the transverse pad 101. The bottom-contact pads 222 are arranged in groups of four below the movable end of the adjustment control 221. The bottom-contact pads 222 are telescopic pads, and the adjustment control 221 is a device that is pushed by an electric actuator. By controlling the position of the movable end and the bottom-contact pads 222 below the transverse pad 101, support structures at different points can be formed on the undulating slope, so that the cross pad 1 remains parallel to the slope, the laser line emitted by the laser pointing component 21 can point to the top of the slope, and a foundation parallel to the slope is formed for the measuring structure above the cross pad 1.

[0052] It needs to be clarified that, such as Figure 8 As shown, by extending and retracting the bottom pad 222 and adjusting the position of the bottom pad 222 on the transverse pad 101 using the adjustment control 221, the entire cross pad 1 and the measuring device on the cross pad 1 can be kept parallel to the slope when the transverse pad 101 is in contact with the bottom of the slope. This allows the entire measuring device to be quickly and paralleled without a stable support point, facilitating subsequent slope calculation.

[0053] Working principle: One end of the transverse pad 101 is placed against the bottom of the slope to be measured, and the entire cross pad 1 is placed against the slope and parallel to it. If the slope is uneven, the length of the bottom contact pad 222 and the positions of the adjustment control 221 and the bottom contact pad 222 on the transverse pad 101 can be adjusted so that the bottom end of the bottom contact pad 222 touches the uneven part. Finally, the laser line emitted by the laser pointing component 21 at the end of the transverse pad 101 can point to the top of the slope, so that the entire cross pad 1 is parallel to the two points at the beginning and end of the slope. At this time, the lifting base 31 will be perpendicular to the slope as the cross pad 1 is placed, and the placement plate 32 will be parallel to the slope. The bubble tube body 41 can remain horizontal under the rotation of the rotating base shaft 42, forming a horizontal... The base point helps confirm the horizontal plane. At this time, the stationary frame 511 on the horizontal plate 32 will be perpendicular to the slope. Adjust the multi-section plate of the lifting base 31 to shorten it to the shortest length. At this time, the bottom contact pad 512 at the bottom of the stationary frame 511 is in contact with the slope, and the telescopic pendulum frame 52 will remain vertical under the action of gravity. At this time, adjust the length of the telescopic pendulum frame 52 so that the counterweight block at the bottom of the telescopic pendulum frame 52 is also in contact with the slope. The distance between the counterweight block and the bottom contact pad 512 is measured by the displacement sensor 62. At this time, the slope can be obtained by dividing the obtained distance value by the height values ​​of the stationary frame 511 and the bottom contact pad 512, so as to quickly obtain the slope of the entire slope. It can quickly calculate the slope of the slope even without suitable support pads and measurement distance.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slope measuring device for building engineering, characterized in that, include: The mounting base includes a cross pad frame (1), a slope top pointing component (2), and a lifting control frame (3). The cross pad frame (1) is an adjustable cross plate frame. The slope top pointing component (2) is located at one end of the cross pad frame (1). The lifting control frame (3) is located at the center of the cross pad frame (1) and is perpendicular to the cross pad frame (1). A horizontal bubble tube (4) and a slope measuring mechanism are provided. The horizontal bubble tube (4) is located at the center of the end frame of the lifting control frame (3). The slope measuring mechanism includes a pendulum measuring component (5) and a distance sensing component (6). The pendulum measuring component (5) is located on one side of the end frame of the lifting control frame (3). The pendulum measuring component (5) includes a base frame (51) and a telescopic pendulum frame (52). The base frame (51) is fixedly installed on one side of the end frame of the lifting control frame (3). The telescopic pendulum frame (52) is rotatably installed on one side of the end frame of the lifting control frame (3). The base frame (51), the telescopic pendulum frame (52) and the horizontal bubble tube (4) rotate around the same axis. The distance sensing component (6) is installed at the bottom of the base frame (51) and the telescopic pendulum frame (52) to measure the distance between the ends of the base frame (51) and the telescopic pendulum frame (52). The slope top pointing component (2) includes a laser pointing component (21) and an adjustable pad (22). The laser pointing component (21) is located on one side of the transverse pad (101), and the adjustable pad (22) is located at the lower end of one side of the transverse pad (101). The laser line emitted by the laser pointing device (21) is parallel to the transverse pad (101); The adjustable pad frame (22) includes an adjustment control (221) and a bottom-contact pad frame (222). The adjustment control (221) is fixedly installed on the transverse pad plate (101). The movable end of the adjustment control (221) is slidably installed on the plate body of the transverse pad plate (101). The bottom-contact pad frames (222) are arranged in groups of four below the movable end of the adjustment control (221). The bottom-contact pad frame (222) is a retractable pad frame. The adjustment control (221) is a device that is pushed by an electric push rod. By controlling the position of the movable end and the bottom-contact pad frame 222 below the transverse pad plate 101, support structures at different points can be formed on the undulating slope, so that the cross pad frame 1 remains parallel to the slope, and the laser line emitted by the laser pointing component 21 can point to the top of the slope, and form a foundation parallel to the slope for the measuring structure above the cross pad frame 1.

2. The slope measuring device for building engineering according to claim 1, characterized in that, The lifting control frame (3) includes a lifting base (31) and a mounting plate (32). The lifting base (31) is located in the center of the cross pad (1). The mounting plate (32) is located on the lifting end of the lifting base (31) and is parallel to the cross pad (1). The mounting plate (32) has a mounting groove in the center of its body. The horizontal bubble tube (4) is located inside the mounting groove. The pendulum measuring component (5) is located on one side of the mounting plate (32) and rotates coaxially with the horizontal bubble tube (4).

3. The slope measuring device for building engineering according to claim 2, characterized in that, The lifting platform (31) includes multiple lifting plates, and the multiple plates of the lifting platform (31) are closely connected.

4. The slope measuring device for building engineering according to claim 2, characterized in that, The horizontal bubble tube (4) includes a bubble tube body (41) and a rotating base shaft (42). The rotating base shaft (42) is located on the inner side wall of the mounting groove in the center of the mounting plate (32), and the center of the bubble tube body (41) is located on the rotating base shaft (42).

5. A slope measuring device for building engineering according to claim 1, characterized in that, The base frame (51) includes a stationary frame (511) and a bottom-contact pad (512). The stationary frame (511) is set on one side of the mounting plate (32) by a fixed shaft. The bottom-contact pad (512) is fixedly set at the bottom end of the stationary frame (511), and the bottom end of the bottom-contact pad (512) is a plane.

6. A slope measuring device for building engineering according to claim 5, characterized in that, The telescopic pendulum frame (52) includes a telescopic frame body and a counterweight block set at the bottom of the telescopic frame body. The telescopic frame body is a multi-segment telescopic metal frame body, and the end of the telescopic frame body is connected to a fixed shaft body that connects the stationary frame (511) and the mounting plate (32). The bottom end of the counterweight block has an arc-shaped edge. The telescopic pendulum frame (52) is rotatably mounted on a fixed shaft that connects the stationary frame (511) and the mounting plate (32) via a low-friction bearing, and an angle ruler for reading is provided at the contact point between the low-friction bearing and the mounting plate (32).

7. A slope measuring device for building engineering according to claim 6, characterized in that, The fixed distance sensing component (6) includes a positioning beam (61) and a displacement sensor (62). The positioning beam (61) is located at the bottom end of the bottom contact pad (512), and the displacement sensor (62) is located at the bottom end of the counterweight block of the telescopic pendulum frame (52), and the displacement sensor (62) is in contact with the positioning beam (61). The positioning beam (61) is parallel to the bottom end of the bottom contact pad (512), and the displacement sensor (62) is parallel to the bottom end of the counterweight block of the telescopic pendulum frame (52).

8. A slope measuring device for building engineering according to claim 1, characterized in that, The cross-shaped pad frame (1) includes a transverse pad (101) and a longitudinal pad (102). Both the transverse pad (101) and the longitudinal pad (102) are metal pads, and the longitudinal pad (102) is tightly inserted into the center of the transverse pad (101), so that the entire cross-shaped pad frame (1) has an adjustable transverse and longitudinal length. The pointing end of the slope top pointing component (2) is on the same plane as the transverse pad (101).

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