Highway guardrail height measuring device

Abstract

The utility model discloses a highway guardrail height measuring device, and belongs to the technical field of measuring equipment. The first sleeve is in sliding connection with the longitudinal shaft, and a groove is formed in the first sleeve; the second sleeve is fixed on the longitudinal shaft, and a groove is formed in the second sleeve; the graduated scale is arranged in the groove, one end of the graduated scale is fixed to the second sleeve, and the other end of the graduated scale is slidably connected with the first sleeve; the vernier scale is arranged on the first sleeve; the gradienter is vertically fixed with the longitudinal shaft; the rack is arranged on the back of the graduated scale; the gear is arranged in the first sleeve; and the knob is fixed with the rack. In the implementation process of the technical scheme, the rack and the gear are arranged, the rack is fixed to the back face of the calibrated scale, when the gear is rotated through the rotary knob, up-down fine adjustment of the first sleeve can be achieved, and therefore more accurate height data can be obtained.

Description

Technical Field

[0001] This application relates to the field of measuring tools, specifically a device for measuring the height of highway guardrails. Background Technology

[0002] Highway guardrails are a type of barrier that serves to isolate and protect vehicles. They absorb collision energy by deforming the soil base, posts, and beams, and force out-of-control vehicles to change direction and return to their normal driving direction. They are currently widely used.

[0003] During the construction and acceptance of highway guardrails, measuring the center height of the guardrail beams is an essential parameter to ensure that they meet safety standards. This prevents insufficient height from causing the guardrails to deform and absorb collision energy, or excessive height from failing to provide effective isolation, thus affecting driving safety. Currently, the height of highway guardrails is mainly measured using a height gauge combined with a level. For example, patent CN221349916U discloses a wave-shaped guardrail height measuring tool. This patent achieves fast and accurate measurement by setting up a sleeve and a telescopic rod. Furthermore, the crossbars can be folded after use, saving transportation space.

[0004] However, in the implementation of the above technical solutions, although rapid measurement can be achieved through the combined use of telescopic rods and sleeves, fine-tuning cannot be performed during the operation of the telescopic rods, and the measurement accuracy is limited by the extension length of the telescopic rods, resulting in large errors and affecting the accuracy of the measurement results. Furthermore, existing specifications require the detection of the center height of the crossbeam of steel guardrails, that is, the height from the middle position of the corrugated guardrail to the edge of the road surface. However, the middle position of the corrugated guardrail is determined visually and then measured with a steel tape measure. The problem with this detection is that the middle position is not easy to determine or is determined inaccurately, resulting in distorted detection results.

[0005] Therefore, it is necessary to provide a highway guardrail height measuring device to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a highway guardrail height measuring device that, by setting a rack and pinion, can achieve fine-tuning of the height and improve measurement accuracy.

[0008] The technical solution adopted by this application to solve its technical problem is: a highway guardrail height measuring device, comprising:

[0009] Vertical axis;

[0010] A first sleeve, which is slidably connected to the longitudinal axis, has a groove on it;

[0011] The second sleeve is fixed on the longitudinal axis and has a groove.

[0012] A scale, wherein the scale is disposed in the groove, and one end of the scale is fixed to the second sleeve, and the other end is slidably connected to the first sleeve;

[0013] A vernier scale, which is mounted on the first sleeve;

[0014] A level, which is fixed perpendicularly to the vertical axis;

[0015] A rack, wherein the rack is disposed on the back of the scale;

[0016] A gear, wherein the gear is disposed inside the first sleeve and meshes with a rack;

[0017] A knob, which is fixed to a rack.

[0018] In the implementation of the technical solution of this application, by setting a rack and a gear, and fixing the rack to the back of the scale, the first sleeve can be finely adjusted up and down when the gear is rotated by the knob, thereby obtaining more accurate height data.

[0019] Furthermore, the bottom of the longitudinal axis is provided with a pointed tip, which is connected to the ground.

[0020] Furthermore, the inner side of the second fastener is provided with a conical surface, which fits against the side of the level.

[0021] Furthermore, the level is equipped with a bubble level, and a magnetic contact is provided at the end of the level, with corrugated protrusions on the side of the magnetic contact.

[0022] Furthermore, a first fastener is provided on the side of the second sleeve, and the first fastener passes through the second sleeve and contacts the side of the longitudinal axis.

[0023] The beneficial effects of this application are: the highway guardrail height measuring device provided by this application, by setting a rack and a gear, with the rack fixed to the back of the scale, can achieve fine adjustment of the first sleeve up and down when the gear is turned by the knob, thereby obtaining more accurate height data.

[0024] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is an overall schematic diagram of a highway guardrail height measuring device according to this application;

[0027] Figure 2 for Figure 1 Another perspective view of the medium-height measuring device;

[0028] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0029] The following are the labeling elements in the figure:

[0030] 1. Vertical axis; 2. First sleeve; 3. Second sleeve; 4. First fastener; 5. Scale; 6. Vernier caliper; 7. Level; 61. Rack; 62. Gear; 63. Knob; 81. Level bubble; 82. Second fastener; 83. Conical surface; 84. Magnetic contact. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] 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 of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] like Figure 1As shown, this application provides a highway guardrail height measuring device. This device is used to measure the height of guardrails on highways or other roads, and to promptly identify guardrail positions that do not meet the height requirements. The height measuring device includes a longitudinal axis 1, a second sleeve 3 at the bottom of the longitudinal axis 1, and a first fastener 4 on the second sleeve 3. The second sleeve 3 is fixed to the longitudinal axis 1 by the first fastener 4. A first sleeve 2 is provided at the top of the longitudinal axis 1 and is slidably connected to the longitudinal axis 1. Therefore, its height can be manually changed to measure guardrails of different heights. Both the first sleeve 2 and the second sleeve 3 are provided with grooves, in which a scale 5 is engaged. The bottom of the scale 5 is fixedly connected to the second sleeve 3, and the other positions are slidably connected to the first sleeve 2. At the same time, a vernier caliper 6 is provided on the side of the first sleeve 2. After moving the first sleeve 2 to different heights, the height data can be accurately obtained by the cooperation of the scale 5 and the vernier caliper 6. The reading principle of the vernier caliper in the prior art can be referred to for the reading method, which will not be described in detail in this embodiment.

[0034] Since the height of the guardrail is relative to the road surface, and there is often a distance between the road and the guardrail for landscaping or other purposes, the bottom of the longitudinal axis 1 needs to be placed on the ground of the road during measurement. This makes it difficult to determine the measurement point. Therefore, in order to improve the measurement accuracy, a level 7 is provided at the other end of the first sleeve 2. One end of the level 7 is fixed to the first sleeve 2, and the level 7 is always set perpendicular to the longitudinal axis 1. A second fastener 82 is provided to fix the guardrail.

[0035] like Figure 3 As shown, the inner side of the second fastener 82 is provided with a conical surface 83. The conical surface 83 can be fixed by fitting with the side of the level 7. The second fastener 82 can also be used to achieve a rotatable connection between the level 7 and the first sleeve 2. When stored, the level 7 can be rotated around the first sleeve 2 to fit, reducing the space occupied.

[0036] like Figure 1 As shown, the level 7 is equipped with a level bubble 81. By observing the position of the level bubble 81, it can be determined whether the level is horizontal. During measurement, the vertical axis 1 is placed on the horizontal surface of the road, and then the first sleeve 2 is adjusted to the predetermined height to ensure that the level bubble 81 is centered. The accurate guardrail height can be obtained by reading the matching data of the scale 5 and the vernier caliper 6.

[0037] Since most guardrails are corrugated, it is necessary to measure their center position during measurement. Therefore, a magnetic contact 84 is provided at the end of the level 7. The end face of the magnetic contact 84 has a protrusion, the shape of which is consistent with the corrugated shape of the guardrail. Therefore, during measurement, the magnetic contact 84 can be attracted to the surface of the guardrail without manual positioning, ensuring that the measurement point is located at the center of the corrugation and will not easily shift during measurement, thereby improving the stability and accuracy of the measurement.

[0038] Furthermore, the end face of the magnetic contact 84 and the level 7 can be detachably connected, for example by a threaded connection or a snap-fit ​​structure, to facilitate the replacement of contacts of different shapes to adapt to different types of guardrails, thereby achieving accurate measurement of different guardrail heights;

[0039] In practical applications, although different heights can be measured by manually moving the first sleeve 2, human error is unavoidable during the reading process, affecting the measurement accuracy. Therefore, the movement and fixing of the first sleeve 2 need to be optimized. Figure 2 As shown, a rack 61 is provided on the back of the scale 5. The rack 61 is fixed to the scale 5, and a gear 62 is provided inside the first sleeve 2. The gear 62 extends to the outside and is connected to a knob 63. The gear 62 meshes with the rack 61. Since the rack 61 is fixed, the gear 62 can be rotated by rotating the knob 63, thereby fine-tuning the first sleeve 2 and improving the measurement accuracy.

[0040] In addition, the height from the top of the corrugated guardrail to the edge of the road can be directly measured, and then half the height of the corrugated guardrail can be subtracted to determine the center height of the beam. Since the height of the corrugated guardrail is a fixed value, its deviation is small and has little impact on the test results. Therefore, the test results obtained by this method are relatively accurate.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for measuring the height of highway guardrails, characterized in that: include: Vertical axis (1); The first sleeve (2) is slidably connected to the longitudinal shaft (1) and has a groove on it; The second sleeve (3) is fixed on the longitudinal shaft (1) and has a groove. A scale (5) is set in a groove, and one end of the scale (5) is fixed to the second sleeve (3), and the other end is slidably connected to the first sleeve (2); Vernier scale (6), which is mounted on the first sleeve (2); A level (7) is fixed perpendicularly to the longitudinal axis (1) and is provided with a second fastener (82) for fixing. A rack (61) is disposed on the back of a scale (5); Gear (62), the gear (62) is disposed inside the first sleeve (2) and meshes with the rack (61); A knob (63) is fixed to a rack (61).

2. The highway guardrail height measuring device according to claim 1, characterized in that: The bottom of the longitudinal axis (1) is provided with a pointed tip, which is connected to the ground.

3. The highway guardrail height measuring device according to claim 1, characterized in that: The inner side of the second fastener (82) is provided with a conical surface (83), which is in contact with the side of the level (7).

4. The highway guardrail height measuring device according to claim 1, characterized in that: The level (7) is provided with a level bubble (81), and the end of the level (7) is provided with a magnetic contact (84), the side of which has a corrugated protrusion.

5. The highway guardrail height measuring device according to claim 1, characterized in that: The second sleeve (3) is provided with a first fastener (4) on its side, and the first fastener (4) passes through the second sleeve (3) and contacts the side of the longitudinal axis (1).

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