Portable foundation pit slope gradient automatic measuring device

Abstract

The application discloses a portable foundation pit slope gradient automatic measuring device, and relates to the technical field of road construction measuring equipment. The device comprises a handle, a horizontal distance measuring mechanism arranged in the handle, a wire plummet arranged on one side of the handle, a vertical distance measuring mechanism arranged in the wire plummet, a winding motor and a wire winding wheel, a ground nail connector and the wire plummet are magnetically attracted and clamped, a trigger rod is arranged to drive a first reed and a second reed to abut against each other when the ground nail connector and the wire plummet are clamped, the winding motor is electrified, the wire winding wheel is driven to wind a wire rope, the wire rope is straightened, the horizontal distance and the vertical distance of the slope are measured by adjusting the telescopic rod, a vertical rod, a conductive coil and a metal wire sleeve are arranged, the angle between the straightened wire rope and the vertical plane tends to be 0 by adjusting the extension length of the telescopic rod, the buzzer alarms when the metal wire sleeve touches the conductive coil, the staff is reminded that the angle between the wire rope and the vertical plane reaches a reasonable error range, and the data accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of road construction surveying equipment technology, specifically a portable automatic slope measurement device for foundation pits. Background Technology

[0002] The roadbed slope refers to the sloping surface on both sides of the roadbed cross section that connects to the ground. The shape and steepness of the slope have a significant impact on the stability of the roadbed and the engineering cost. Therefore, it is necessary to measure the slope using appropriate instruments during construction to ensure that it meets the standards.

[0003] According to the portable automatic instrument for measuring the slope of a foundation pit disclosed in patent number CN114812505B, the instrument includes a handle, a telescopic rod, a plumb bob, and a control component. The instrument measures the slope of the foundation pit by using the telescopic rod in conjunction with the plumb bob. During measurement, the rope is pulled out to a length that matches the height of the slope. The control component then holds the rope in place. The telescopic rod is then extended until the plumb bob at the end of the rope touches the bottom surface of the slope. The slope can then be calculated by the extension length of the telescopic rod and the extension length of the rope.

[0004] However, in actual use, the above-mentioned instrument first pulls out a certain length of rope before extending the telescopic rod until the plumb bob touches the ground. During this process, the rope may be released too long, causing the rope to be in a loose and drooping state when the plumb bob touches the ground. In addition, there may be a large error between the extension length of the telescopic rod and the actual horizontal distance of the slope, which affects the accuracy of the actual measurement data. Summary of the Invention

[0005] The purpose of this invention is to provide a portable automatic slope measurement device for foundation pits, so as to solve the problem of large measurement errors in existing portable slope measuring instruments mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a portable automatic slope measurement device for foundation pits, including a handle. The handle is a hollow structure with one end open. A horizontal distance measuring mechanism is provided inside the handle. The horizontal distance measuring mechanism includes a telescopic rod movably assembled inside the handle. One end of the telescopic rod extends to the outside of the handle. A plumb bob is provided on one side of the handle. The handle and the plumb bob are connected by a rope. A vertical distance measuring mechanism is provided inside the plumb bob. The vertical distance measuring mechanism includes a winding motor and a winding reel. The winding reel can be driven by the winding motor to wind up the rope.

[0008] Furthermore, the plumb bob is equipped with a buzzer, and the end face of the plumb bob facing the handle is provided with a pole and a metal wire sleeve. One end of the metal wire sleeve is movably installed at the center of the end face of the plumb bob, and the end of the pole is provided with a conductive coil. When the metal wire sleeve touches the conductive coil, the buzzer will sound an alarm.

[0009] Furthermore, a storage slot is provided at one end of the handle relative to the telescopic rod, and a ground nail connector is threaded into the storage slot.

[0010] Furthermore, the sinker has a first groove on the side opposite to the handle, and the end of the ground stake connector has a boss that matches the first groove. The contact surfaces of the first groove and the boss are both provided with magnets. A contact groove is provided on the side wall of the first groove. A trigger rod is slidably assembled in the contact groove. A compression spring is provided between one end of the trigger rod and the inner wall of the contact groove, and the other end extends into the first groove.

[0011] Furthermore, a second groove is provided on the side wall of the contact groove, and a first spring is provided on the inner wall of the second groove. A second spring is provided on the side wall of the trigger rod, located inside the second groove and adapted to the first spring. The second spring is driven to abut against the first spring to energize the winding motor and the buzzer.

[0012] Furthermore, the telescopic rod has graduations on its side wall.

[0013] Furthermore, the telescopic rod includes a main rod disposed within a handle and multiple auxiliary rods retracted within the main rod, with matching limiting rings at both ends of each auxiliary rod section.

[0014] Furthermore, a digital display screen is provided on the side wall of the plumb bob.

[0015] Furthermore, both the upper end face of the ground nail connector and the side wall of the handle are equipped with bubble levels.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0017] This invention provides a portable automatic slope measurement device for foundation pits:

[0018] 1. The ground stake connector and the plumb bob are magnetically attached and engaged, allowing for quick positioning of the plumb bob;

[0019] 2. When the ground stake connector and the plumb bob are engaged, the trigger rod drives the first spring and the second spring to contact each other, which powers the winding motor and drives the winding wheel to wind up the rope, making the rope taut so that the telescopic rod can be adjusted to measure the horizontal and vertical distances of the slope.

[0020] 3. Set up a pole, a conductive coil, and a metal wire sleeve. By adjusting the extension length of the telescopic pole, the angle between the taut rope and the vertical plane approaches 0. When the metal wire sleeve touches the conductive coil, a buzzer sounds an alarm to remind the staff that the angle between the rope and the vertical plane has reached a reasonable error range, thereby improving the accuracy of the measurement data. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] In the attached diagram:

[0023] Figure 1 A schematic diagram of the measuring device provided by the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 for Figure 2 Enlarged view at point B in the middle;

[0026] Figure 4 This is a schematic diagram of the measuring device provided by the present invention;

[0027] Figure 5 for Figure 4 Enlarged view at point C;

[0028] Figure 6 This is a schematic diagram of the structure of the plumb bob and ground stake connector provided by the present invention;

[0029] Figure 7 A side view of the connection between the plumb bob and the ground stake provided by the present invention;

[0030] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0031] In the picture:

[0032] 100. Handle; 101. Storage slot; 110. Telescopic rod; 111. Scale; 201. String; 202. Plumb bob; 203. Buzzer; 204. Reel; 205. Motor; 206. Pole; 207. Conductive coil; 208. Metal wire sleeve; 300. Trigger rod; 301. Compression spring; 302. Second spring; 303. First spring; 400. Ground stake connector; 401. Bubble level; 500. Magnet; 600. Digital display screen. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Please see Figures 1 to 8This invention provides a portable automatic slope measurement device for foundation pits, comprising a handle 100, which is a hollow structure with one end open. A horizontal distance measuring mechanism is provided inside the handle 100, including a telescopic rod 110 movably mounted within the handle 100. One end of the telescopic rod 110 extends to the outside of the handle 100. A plumb bob 202 is provided on one side of the handle 100, and the handle 100 and the plumb bob 202 are connected by a rope 201. During measurement, the plumb bob 202 can be lowered to the bottom of the slope by releasing the rope. For line measurement, the plumb bob 202 is equipped with a vertical distance measuring mechanism, which includes a winding motor 205 and a winding reel 204. The winding reel 204 can be driven by the winding motor 205 to wind up the line 201. The winding motor 205 is a small torque, rotary micro motor 205. After the winding motor 205 drives the winding reel 204 to wind up the line 201 and make the line 201 taut, the winding reel 204 can be rotated to release the line by pulling the handle 100 and the telescopic rod 110, so as to adjust the length of the line 201.

[0039] like Figures 4 to 7 As shown, the plumb bob 202 is equipped with a buzzer 203. The end face of the plumb bob 202 facing the handle 100 has a vertical rod 206 and a metal wire sleeve 208. An insulating rubber layer is fitted over the outer side of the vertical rod 206 to prevent accidental contact with the metal wire sleeve 208. One end of the metal wire sleeve 208 is movably mounted at the center of the end face of the plumb bob 202, and the metal wire sleeve 208 can freely rotate around the center of the end face of the plumb bob 202. The vertical rod 206 is parallel to but does not coincide with the axis of the plumb bob 202. A conductive coil 207 is provided at the end of the vertical rod 206, and the center of the conductive coil 207 is located on the axis of the plumb bob 202. When the worker lowers the plumb bob... After the wire 202 is thrown and engaged with the ground stake connector 400, the length of the telescopic rod 110 is adjusted to measure the horizontal distance of the slope. When the metal wire sleeve 208 touches the conductive coil 207, the buzzer 203 alarms, indicating that the angle between the wire rope 201 and the vertical plane is within a reasonable error range. In this embodiment, when the taut straight rope 201 drives the metal wire sleeve 208 to touch the conductive coil 207, the angle between the wire rope 201 and the vertical plane is 3°. Continue to wait for the buzzer 203 to alarm to prevent alarms caused by accidental contact of the metal wire sleeve 208 during wire laying. After the buzzer 203 alarms continuously for 5 seconds, the value can be recorded to calculate the slope gradient.

[0040] like Figure 4 As shown, in order to facilitate carrying the ground nail connector 400, this embodiment has a storage groove 101 at one end of the handle 100 relative to the telescopic rod 110, and a threaded groove is provided on the inner wall of the storage groove 101 so as to thread-fix the ground nail connector 400, and the nail head of the ground nail connector 400 is located inside the storage groove 101 to prevent injury to the staff when carrying it.

[0041] like Figures 5 to 8As shown, the sinker 202 has a first groove on the side opposite to the handle 100. The end of the ground stake connector 400 has a boss that matches the first groove. Magnets 500 are provided on the contact surfaces of the first groove and the boss. The magnetic force of the magnets 500 on the contact surfaces of the first groove and the boss is much greater than the line release resistance of the reel 204, so as to prevent the sinker 202 from separating from the ground stake connector 400 when the line is released. A contact groove is provided on the side wall of the first groove. A trigger rod 300 is slidably mounted in the contact groove. A compression spring 301 is provided between one end of the trigger rod 300 and the inner wall of the contact groove, and the other end extends into the first groove. A second groove is provided on the side wall of the contact groove. The inner wall of the second groove is provided with a first spring 303, and the side wall of the trigger rod 300 is provided with a second spring 302 located inside the second groove and adapted to the first spring 303. The second spring 302 is driven to abut the first spring 303 to energize the winding motor 205 and the buzzer 203. When the sinker 202 is engaged with the ground nail connector 400, the trigger rod 300 is squeezed and compressed into the contact groove, which drives the second spring 302 to abut the first spring 303, energizing the buzzer 203 and the winding motor 205. At this time, the winding motor 205 starts and drives the winding wheel 204 to rotate and wind up the rope 201, making the rope 201 taut.

[0042] like Figure 1 As shown, the telescopic rod 110 has a scale 111 on its side wall. The scale 111 is provided so that workers can quickly read the horizontal distance of the slope and improve work efficiency.

[0043] like Figure 1 and Figure 5 As shown, the telescopic rod 110 includes a main rod located within the handle 100 and multiple auxiliary rods retracted within the main rod. Each auxiliary rod has a matching limiting ring at both ends. The limiting ring is provided to prevent the auxiliary rod from falling off and damaging the instrument. A rubber ring is provided between the limiting ring and the adjacent auxiliary rod to increase friction and prevent the auxiliary rod from being stretched outwards by force when lifting the line, thus affecting the measurement.

[0044] like Figure 5 As shown, a digital display screen 600 is provided on the side wall of the plumb bob 202. The digital display screen 600 can display the length of the line 201 in real time so that the staff can record and calculate the slope.

[0045] like Figure 1 and Figure 6As shown, both the upper end face of the ground stake connector 400 and the side wall of the handle 100 are equipped with bubble levels 401. With the bubble level 401, before measurement, the operator needs to insert the ground stake connector 400 into the bottom of the slope and adjust it with the bubble level 401 to keep the upper end face of the ground stake connector 400 horizontal. This ensures that when the plumb bob 202 is engaged with the ground stake connector 400, the upright 206 on the upper end face of the plumb bob 202 remains perpendicular to the horizontal plane, preventing the upright 206 from tilting and causing large errors in the measurement data. The bubble level 401 on the handle 100 makes it easy for the operator to keep the telescopic rod 110 horizontal when measuring from the top of the slope, preventing large errors in the measurement data due to the tilt of the telescopic rod 110.

[0046] Working principle: During measurement, the worker first inserts the ground nail connector 400 into the bottom of the slope and adjusts the upper contact surface of the ground nail connector 400 to maintain horizontality using a bubble level 401. Then, the worker walks to the top of the slope and pulls the plumb bob 202 outwards to release the line. When the released line 201 approaches the vertical distance of the slope, the telescopic rods 110 are pulled out sequentially, starting from the first section. When the extension length of the telescopic rods 110 approaches the horizontal distance of the slope, the worker holds the handle 100 and throws the plumb bob 202 down to the bottom of the slope. The position of the plumb bob 202 is adjusted using the telescopic rods 110, moving it above the ground nail connector 400. The lower end of the plumb bob 202 and the upper end of the ground nail connector 400 are tightly adhered under the attraction of the magnet 500. At this time, the trigger rod 300 is pushed into the contact groove by the ground nail connector 400, and then... When the second spring 302 contacts the first spring 303, the buzzer 203 and the winding motor 205 are energized. The winding motor 205 starts and drives the winding wheel 204 to rotate and wind up the rope 201, making the rope 201 taut. After the rope 201 is taut, the extension length of the telescopic rod 110 is adjusted so that the rope 201 gradually approaches a vertical state, causing the metal wire sleeve 208 to move closer to the conductive coil 207. When the metal wire sleeve 208 touches the conductive coil 207, the buzzer 203 sounds an alarm. After the buzzer 203 continues to sound an alarm for 5 seconds, the extension length of the telescopic rod 110 is recorded to obtain the horizontal distance of the slope. The length of the rope 201 is recorded on the digital display screen 600 on the plumb bob 202. The vertical distance of the slope is obtained by subtracting the extension length of the telescopic rod 110 from the length of the rope 201, and then the slope can be calculated.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A portable automatic slope measurement device for foundation pits, characterized in that: The device includes a handle (100), which is a hollow structure with one end open. A horizontal ranging mechanism is provided inside the handle (100). The horizontal ranging mechanism includes a telescopic rod (110) movably mounted inside the handle (100). One end of the telescopic rod (110) extends to the outside of the handle (100). A sinker (202) is provided on one side of the handle (100). The handle (100) and the sinker (202) are connected by a rope (201). A vertical ranging mechanism is provided inside the sinker (202). The vertical ranging mechanism includes a winding motor (205) and a winding reel (204). The winding reel (204) can be driven by the winding motor (205) to wind up the rope (201). The plumb bob (202) is equipped with a buzzer (203). The end face of the plumb bob (202) facing the handle (100) is provided with a pole (206) and a metal wire sleeve (208). One end of the metal wire sleeve (208) is movably installed at the center of the end face of the plumb bob (202). The end of the pole (206) is provided with a conductive coil (207). The metal wire sleeve (208) touches the conductive coil (207) to make the buzzer (203) sound an alarm. The handle (100) has a storage slot (101) at one end relative to the telescopic rod (110), and a ground nail connector (400) is threaded into the storage slot (101). The plumb bob (202) has a first groove on the side opposite to the handle (100). The end of the ground nail connector (400) has a boss that matches the first groove. The contact surfaces of the first groove and the boss are provided with magnets (500). A contact groove is provided on the side wall of the first groove. A trigger rod (300) is slidably assembled in the contact groove. A compression spring (301) is provided between one end of the trigger rod (300) and the inner wall of the contact groove, and the other end extends into the first groove. The side wall of the contact groove is provided with a second groove, and the inner wall of the second groove is provided with a first spring (303). The side wall of the trigger rod (300) is provided with a second spring (302) located inside the second groove and adapted to the first spring (303). The second spring (302) is driven to abut against the first spring (303) so that the winding motor (205) and the buzzer (203) are energized. The telescopic rod (110) has a scale (111) on its side wall.

2. The portable automatic slope measurement device for foundation pits according to claim 1, characterized in that: The telescopic rod (110) includes a main rod located within a handle (100) and multiple auxiliary rods retracted within the main rod. Each auxiliary rod has a matching limiting ring at both ends.

3. The portable automatic slope measurement device for foundation pits according to claim 1, characterized in that: The side wall of the plumb bob (202) is provided with a digital display screen (600).

4. The portable automatic slope measurement device for foundation pits according to claim 1, characterized in that: Bubble levels (401) are provided on the upper end face of the ground nail connector (400) and the side wall of the handle (100).

Images