Roadbed gradient detection device for road

Abstract

The utility model discloses a road subgrade gradient detection device which comprises a supporting rod, a movable rod and a hanging ring, a first drill rod is arranged at the bottom of one end of the supporting rod, a hinge seat is fixedly arranged at the top of the other end of the supporting rod, the bottom of the movable rod is rotatably connected with the hinge seat, and a protractor is detachably arranged at the top of the movable rod. A round pin is fixedly arranged on the side wall of the protractor along the axis of the protractor, a connecting rod is rotatably connected to the side wall of the movable rod, a first through hole is formed in the side wall of the end, away from the movable rod, of the connecting rod, a first bolt rotatably penetrates through the first through hole, two first screw holes are formed in the side wall of the supporting rod at intervals, and the threaded section of the first bolt is inserted into one first screw hole in a threaded mode. The hanging ring rotatably sleeves the round pin, and a plumb bob is hung on the outer side wall of the hanging ring through a rope. Through the arrangement, the supporting rod can be in a static state after being adjusted to a proper position, and the accuracy of a measurement result of the roadbed gradient is improved.

Description

Technical Field

[0001] This utility model belongs to the field of engineering testing technology, specifically relating to a roadbed slope testing device for highways. Background Technology

[0002] The slope of a roadbed has a significant impact on its stability and the economic efficiency of the project. When the slope of the roadbed is too steep, it can cause the soil or rock to lose stability, increasing the risk of landslides and collapses. When the slope of the roadbed is too gentle, it will increase the amount of earthwork and construction costs. Therefore, during highway construction, it is necessary to test the slope of the roadbed to ensure that it meets the design standards.

[0003] Chinese patent CN220356367U discloses a roadbed slope measuring device. This device includes an inclined plate, a transverse rod, a protractor, and a level bubble. The top surface of the inclined plate is connected to one end of the transverse rod via a hinge. The lower end of the protractor is in close contact with the inclined plate. An observation hole is provided on the transverse rod near the hinge, and the observation hole has alignment marks pointing to the scale of the protractor. A level bubble is located on the top of the transverse rod away from the hinge, reflecting the horizontal state of the transverse rod. This device utilizes the rotation of the transverse rod to measure the angle between the transverse rod and the inclined plate when the transverse rod is horizontal, thereby measuring the slope angle.

[0004] When using the above method, the inspector needs to hold the horizontal bar. When the inspector's line of sight shifts from the level bubble to the observation hole, the horizontal bar is prone to tilting again due to the inspector's misoperation, which leads to poor accuracy in the measurement results of the roadbed slope. Utility Model Content

[0005] The present invention aims to provide a roadbed slope detection device for highways, so as to solve the problem of poor accuracy in the measurement results of roadbed slope in the above-mentioned solutions.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A roadbed slope detection device includes a support rod, a movable rod, and a lifting ring. A first chisel is installed at the bottom of one end of the support rod, and a hinge seat is fixedly installed at the top of the other end. The bottom of the movable rod is rotatably connected to the hinge seat. A protractor is detachably installed at the top of the movable rod. A round pin is fixedly installed along the axis of the side wall of the protractor. A connecting rod is rotatably connected to the side wall of the movable rod. A first through hole is provided on the side wall of the connecting rod away from the movable rod, and a first bolt rotatably passes through the first through hole. Two first threaded holes are spaced apart on the side wall of the support rod, and the threaded section of the first bolt is threaded into one of the first threaded holes. The lifting ring is rotatably sleeved on the round pin, and a plumb bob is suspended from the outer side wall of the lifting ring by a rope.

[0008] The principle and effects of this technical solution:

[0009] During measurement, rotate the movable rod and align the first through hole on the connecting rod with the first screw hole near the hinge seat. At this time, the movable rod and the support rod are perpendicular to each other. Pass the first bolt through the first through hole and insert the threaded section of the first bolt into the first screw hole aligned with the first through hole. After installing the protractor on the top of the movable rod, put a lifting ring around the outer circumference of the pin. Let the plumb bob fall freely and keep the string vertical. Insert the first chisel into the roadbed to be measured, so that the bottom of the support rod is in contact with the slope of the roadbed to be measured. Rotate the support rod along the slope of the roadbed until the surface of the protractor is parallel to the string. Take a reading at the scale aligned with the string. The reading is the slope of the roadbed to be measured.

[0010] With the above setup, the support rod is installed on the slope of the roadbed to be measured using the first chisel, and the slope of the roadbed provides support for the support rod. After the support rod is adjusted to the appropriate position, it can be kept stationary, ensuring that the surface of the protractor is kept parallel to the string during the reading process. This solves the problem of poor accuracy in the measurement results of the roadbed slope in the above scheme, and at the same time facilitates the recording of data by the testing personnel, further improving the practicality of this device.

[0011] In this invention, a fixing rod is fixedly installed laterally on the side wall of one end of the support rod. A through-hole is provided at the top of the fixing rod at the end furthest from the support rod, and a second drill rod slides through the hole. With this arrangement, after the support rod rotates until the surface of the protractor is parallel to the string, the second drill rod is passed through the hole and inserted into the roadbed, further improving the stability of the device during use.

[0012] In this invention, the top of the first drill rod is movably connected to the bottom of one end of the support rod via a ball joint. This configuration allows the support rod to rotate along the roadbed slope after the first drill rod is inserted into the roadbed.

[0013] In this invention, a level is also fixedly installed at the top of the fixing rod. By adjusting the level to a horizontal position, the surface of the protractor is ensured to be perpendicular to the horizontal plane, thereby ensuring that the surface of the protractor is parallel to the string, further improving the accuracy of the device's measurement of roadbed slope.

[0014] In this utility model, a mounting block is fixedly provided on the top of the movable rod, and two second screw holes are provided at intervals on the side wall of the mounting block. The side wall of the protractor is provided with a second through hole aligned with the two second screw holes, wherein one of the second through holes passes through the pin along the axis of the pin.

[0015] The principle and effects of this technical solution:

[0016] When the device is in usage state two (i.e., idle state), the first bolt passes through the first through hole and is threaded into another first screw hole, and the length direction of the movable rod is parallel to the length direction of the support rod. When testing is required, the first bolt is loosened and disengaged from the other first screw hole. Then, the movable rod is rotated and the first through hole is aligned with the first screw hole near the hinge seat. The first bolt is then inserted into the first screw hole. At this time, the length direction of the movable rod is perpendicular to the length direction of the support rod. Then, the two second through holes of the protractor are aligned with the corresponding second screw holes, and the fastening bolt is inserted through the second through hole into the second screw hole. Finally, the lifting ring is fitted onto the round pin.

[0017] With the above settings, the movable rod can be rotated to be parallel to the support rod and then fixed, improving the stability of the device in the folded state. At the same time, by disassembling and assembling the protractor, it is easy to store the protractor and avoid damage to the protractor due to bumps.

[0018] In this invention, the end wall of the round pin is provided with a countersunk hole on the outer periphery of one of the second through holes.

[0019] In this invention, the length of the string is greater than the radius of the protractor. This design prevents the plumb bob from contacting the protractor, further ensuring the accuracy of the device's measurement of roadbed slope. Attached Figure Description

[0020] Figure 1 This is a monoaxial view of the utility model in use.

[0021] Figure 2 This is an isometric view of the overall structure of this utility model;

[0022] Figure 3 Disassembly of the components of this utility model Figure 1 ;

[0023] Figure 4 Disassembly of the components of this utility model Figure 2 ;

[0024] Figure 5 This is a biaxial projection of the utility model in use. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0026] The reference numerals in the accompanying drawings include: 10, support rod; 11, hinge seat; 12, first screw hole; 13, fixing rod; 131, insertion hole; 14, second drill rod; 15, level; 20, first drill rod; 30, movable rod; 31, connecting rod; 311, first through hole; 32, first bolt; 33, mounting block; 331, second screw hole; 40, protractor; 41, round pin; 42, second through hole; 43, countersunk hole; 50, lifting ring; 51, rope; 52, plumb bob.

[0027] Example:

[0028] As attached Figure 1-5 As shown, this utility model discloses a roadbed slope detection device, including a support rod 10, a movable rod 30, and a lifting ring 50. A first chisel 20 is provided at the bottom of one end of the support rod 10, and a hinge seat 11 is fixedly provided at the top of the other end of the support rod 10. The bottom of the movable rod 30 is rotatably connected to the hinge seat 11. A protractor 40 is detachably provided at the top of the movable rod 30. A round pin 41 is fixedly provided on the side wall of the protractor 40 along its axis. A connecting rod 31 is rotatably connected to the side wall of the movable rod 30. A first through hole 311 is provided on the side wall of the connecting rod 31 away from the movable rod 30. A first bolt 32 is rotatably inserted into the first through hole 311. Two first screw holes 12 are provided at intervals on the side wall of the support rod 10. The threaded section of the first bolt 32 is threaded into one of the first screw holes 12. The lifting ring 50 is rotatably sleeved on the round pin 41, and a plumb bob 52 is hung on the outer side wall of the lifting ring 50 by a rope 51.

[0029] In this embodiment, a fixing rod 13 is fixedly provided on the side wall of one end of the support rod 10 in a transverse direction. A through insertion hole 131 is provided on the top of the fixed rod 13 away from the support rod 10. A second drill rod 14 is slidably inserted into the insertion hole 131.

[0030] In this embodiment, the top of the first drill rod 20 is movably connected to the bottom of one end of the support rod 10 via a ball joint.

[0031] In this embodiment, a level 15 is also fixedly installed on the top of the fixed rod 13. The bottom surfaces of the fixed rod 13 and the support rod 10 are coplanar, and the axis of the level 15 is perpendicular to the length direction of the support rod 10.

[0032] In this embodiment, a mounting block 33 is fixedly provided on the top of the movable rod 30, and two second screw holes 331 are provided at intervals on the side wall of the mounting block 33. The side wall of the protractor 40 is provided with a second through hole 42 aligned with the two second screw holes 331, wherein one of the second through holes 42 passes through the round pin 41 along the axis of the round pin 41.

[0033] In this embodiment, the end wall of the pin 41 is provided with a countersunk hole 43 on the outer periphery of one of the second through holes 42.

[0034] In this embodiment, the length of the string 51 is greater than the radius of the protractor 40.

[0035] The specific implementation process is as follows:

[0036] During measurement, rotate the movable rod 30 and align the first through hole 311 on the connecting rod 31 with the first screw hole 12 near the hinge seat 11. At this time, the movable rod 30 and the support rod 10 are perpendicular to each other. Pass the first bolt 32 through the first through hole 311 and thread the threaded section of the first bolt 32 into the first screw hole 12 aligned with the first through hole 311. After installing the protractor 40 on the top of the movable rod 30, put the lifting ring 50 around the outer circumference of the round pin 41. Let the plumb bob 52 fall freely and keep the rope 51 in a vertical position. Insert the first chisel 20 into the roadbed to be measured, so that the bottom of the support rod 10 is in contact with the slope of the roadbed to be measured. Rotate the support rod 10 along the slope of the roadbed until the surface of the protractor 40 is parallel to the rope 51. Read the scale aligned with the rope 51. The reading result is the slope of the roadbed to be measured.

[0037] When the device is in usage state two (i.e., idle state), the first bolt 32 passes through the first through hole 311 and is threaded into another first screw hole 12, and the length direction of the movable rod 30 is parallel to the length direction of the support rod 10. When testing is required, the first bolt 32 is loosened and disengaged from the other first screw hole 12. Then the movable rod 30 is rotated and the first through hole 311 is aligned with the first screw hole 12 near the hinge seat 11. The first bolt 32 is inserted into the first screw hole 12. At this time, the length direction of the movable rod 30 is perpendicular to the length direction of the support rod 10. Then the two second through holes 42 of the protractor 40 are aligned with the corresponding second screw holes 331, and the fastening bolt passes through the second through hole 42 and is inserted into the second screw hole 331. Finally, the lifting ring 50 is fitted onto the round pin 41.

[0038] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for detecting the slope of a roadbed of a road, characterized by comprising: The utility model relates to a surveying and mapping device, including: Supporting rod, first drill rod is provided with in the bottom of one end of supporting rod, the top of the other end of supporting rod is fixedly provided with articulated seat; Movable rod, the bottom of movable rod is rotatably connected with articulated seat, the top of movable rod is detachably provided with protractor, the lateral wall of protractor is fixedly provided with round pin along its axis, the lateral wall of movable rod is rotatably connected with connecting rod, the first through hole is provided with first bolt in the first through hole of the lateral wall of connecting rod away from movable rod one end, the lateral wall of supporting rod is provided with two first screw holes at intervals, and the threaded section of first bolt is inserted into one first screw hole in threaded mode; The ring is rotatably sleeved on the round pin, and the outer lateral wall of the ring is hung with a plumb bob through a wire rope.

2. The highway subgrade slope detecting device according to claim 1, wherein: The lateral wall of one end of the supporting rod is fixedly provided with a fixed rod along the transverse direction, the top of the fixed rod away from one end of the supporting rod is provided with a through insertion hole, and the second drill rod is slidably arranged in the insertion hole.

3. The highway subgrade slope detecting device according to claim 2, wherein: The top of the first drill rod is movably connected with the bottom of one end of the supporting rod through a ball head.

4. The highway subgrade slope detecting device according to claim 3, wherein: The top of the fixed rod is also fixedly provided with a level.

5. The highway subgrade slope detecting device according to claim 4, wherein: The top of the movable rod is fixedly provided with a mounting block, the lateral wall of the mounting block is provided with two second screw holes at intervals, the lateral wall of the protractor is provided with two second through holes aligned with the two second screw holes, and one of the second through holes penetrates the round pin along the axis of the round pin.

6. The highway subgrade slope detecting device according to claim 5, wherein: The end wall of the round pin is provided with a countersunk hole outside the periphery of one of the second through holes.

7. The highway embankment slope detecting apparatus of claim 6, wherein: The length of the wire rope is greater than the radius of the protractor.

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