Thickness gauge for measuring wall thickness of stand column of highway guardrail

Abstract

The utility model discloses a thickness gauge for measuring the wall thickness of an expressway guardrail column, and belongs to the technical field of measuring tools, and the thickness gauge comprises an outer frame which is provided with a measuring groove; the measuring arm is in sliding connection with the outer frame; the measuring head is arranged at one end of the measuring arm; the dial plate is connected with the measuring arm; the moving assembly is arranged on the dial plate, and the moving assembly is used for controlling the measuring arm to move; the first extension arm is detachably connected with the outer frame; and the inner contact head is arranged at one end of the first extension arm, and the inner contact head and the side, close to the measuring head, in the measuring groove are located on the same plane. In the implementation process of the technical scheme, the first extension arm detachably connected with the outer frame is arranged, and the first extension arm is provided with the inner contact head located on the same plane with the side, close to the measuring head, in the measuring groove, so that when a cylinder with a certain depth is measured, a deeper position can be measured, and the measuring precision is improved.

Description

Technical Field

[0001] This application relates to the field of measuring tools, specifically a thickness gauge for measuring the wall thickness of highway guardrail posts. Background Technology

[0002] Designing corrugated guardrails in the central median and along the edges of the road on both sides of the highway can not only prevent traffic accidents but also restrict pedestrians from crossing the highway.

[0003] In the use of corrugated guardrails, steel posts are usually used to fix the guardrails. These posts are mainly made of steel, aluminum alloy, fiberglass and other materials. Among them, steel guardrail posts are the most commonly used. They serve to fix and support the guardrails and prevent vehicles from running off the road. The wall thickness of the posts needs to be tested during construction and handover acceptance. Currently, a thickness gauge is usually used to measure the thickness of the posts.

[0004] However, since the construction of the columns requires the use of specialized equipment to drive them into the roadbed to a depth of about 1.4 meters, and to prevent rainwater from corroding the steel columns after construction, column caps are installed at the top of the columns. Once installed, the column caps cannot be removed. During inspection, the column caps can only be pried up and a thickness gauge can be used to measure the wall thickness. However, the columns may deform or bend during driving, and the space left by the pried-up column caps for measuring the wall thickness is insufficient. Moreover, the existing measuring tools can only measure 2-5 cm away from the opening section and cannot measure deeper areas. In some columns, the opening is damaged to a great height, and the measuring tools cannot be inserted, resulting in large errors in the data obtained. Usually, repeated measurements or replacement of measuring equipment are required. This is not only time-consuming and labor-intensive, but also increases the measurement cost. Traditional thickness gauges cannot meet the requirements.

[0005] Therefore, it is necessary to provide a thickness gauge for measuring the wall thickness of highway guardrail posts 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 thickness gauge for measuring the wall thickness of highway guardrail posts, which improves the efficiency of disassembly and assembly by setting the first probe and the mounting base to magnetic connection, and can measure multiple sets of data without frequently replacing the equipment when dealing with deformed posts, thereby improving the accuracy of the measurement results.

[0008] The technical solution adopted by this application to solve its technical problem is: a thickness gauge for measuring the wall thickness of highway guardrail posts, comprising:

[0009] Outer frame, the outer frame having a measuring groove;

[0010] A measuring arm, which is slidably connected to the outer frame;

[0011] The probe is disposed at one end of the measuring arm;

[0012] A dial, which is connected to a measuring arm;

[0013] A movable component, which is disposed on the dial and is used to control the movement of the measuring arm;

[0014] The first extension arm is detachably connected to the outer frame;

[0015] An inner contact head is disposed at one end of the first extended arm, and the inner contact head is on the same plane as the side of the measuring groove near the probe.

[0016] In the implementation of the technical solution of this application, by setting a first extension arm that is detachably connected to the outer frame, and by setting an inner contact head on the first extension arm that is on the same plane as the side of the measuring groove near the probe, a deeper position can be measured when measuring a column with a certain depth, thereby improving the measurement accuracy.

[0017] Furthermore, the moving component includes a shift fork hinged to the dial, one end of which is fixed to one end of the measuring arm.

[0018] Furthermore, a first insertion hole is provided at one end of the outer frame, and the first extension arm is inserted into the first insertion hole.

[0019] Furthermore, the outer frame is provided with at least two sets of bolt holes, the first extension arm is provided with a second insertion hole, and the outer frame is provided with fasteners, which pass through the bolt holes and the second insertion hole respectively to fix the first extension arm to the outer frame.

[0020] Furthermore, the fastener is a bolt.

[0021] Furthermore, a gripping part is provided on the outer frame.

[0022] Furthermore, the dial is equipped with a display screen and buttons.

[0023] The beneficial effects of this application are: the thickness gauge for measuring the wall thickness of highway guardrail posts provided by this application, by setting a first extension arm that is detachably connected to the outer frame, and the first extension arm is provided with an inner contact head that is in the same plane as the side of the measuring groove near the measuring head, can measure deeper positions when measuring posts with a certain depth, thereby improving measurement accuracy.

[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 thickness gauge for measuring the wall thickness of highway guardrail posts according to this application;

[0027] Figure 2 This is a schematic diagram from another angle of a thickness gauge used to measure the wall thickness of highway guardrail posts.

[0028] The following are the labeling elements in the figure:

[0029] 1. Outer frame; 2. Measuring slot; 3. Measuring arm; 4. Probe; 5. Dial; 6. Display screen; 7. Button; 8. Shift fork; 9. Hinge point; 10. First extension arm; 11. Inner contact head; 12. First socket; 13. Bolt hole; 14. Second socket; 15. Bolt; 16. Grip. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] This application provides a thickness gauge for measuring the wall thickness of highway guardrail posts. The thickness gauge is used to measure columnar objects, such as highway posts, and can measure the internal thickness after the post is deformed. After the post is installed, when the post cap can only be opened slightly and the gap is very small, the existing thickness gauge will have the problem of not being able to insert and measure the thickness of the inner wall without deformation, or it will be difficult to insert and thus cannot be measured, resulting in detection distortion. Therefore, it needs to be improved.

[0033] like Figure 1As shown, the thickness gauge includes an outer frame 1, which has a measuring groove 2 and a grip 16. When in use, the thickness can be measured by manually holding the grip 16 and placing the object to be measured into the measuring groove 2.

[0034] A measuring arm 3 is horizontally arranged inside the measuring groove 2. The measuring arm 3 passes through the outer frame 1, and a probe 4 is provided at one end of the measuring arm 3. The measuring arm 3 is adapted to slide and change the distance between the probe 4 and the outer frame 1. When measuring, the probe 4 contacts one side of the object to be measured, and the outer frame 1 inside the measuring groove 2 contacts the other side of the object to be measured. The distance between the probe 4 and the outer frame 1 is the thickness of the object to be measured.

[0035] To facilitate reading the readings, the measuring arm 3 is connected to a dial 5, which is equipped with a display screen 6. In the initial state, the reading on the display screen 6 is zero. During the movement of the measuring arm 3, the display screen 6 will display the moving distance of the measuring arm 3 in real time, which is the thickness of the object to be measured. The dial 5 is equipped with a button 7, which is used for zeroing, recording and other operations.

[0036] To facilitate the movement of the measuring arm 3, a fork 8 is hinged to the dial 5. The fork 8 and the dial 5 have a hinge point 9, and one end of the fork 8 is fixed to one end of the measuring arm 3. When holding the thickness gauge, simply press the other end of the fork 8 manually to move the measuring arm 3, thereby measuring the object to be measured. An elastic device (not shown in the figure) is provided at the connection between the measuring arm 3 and the fork 8. When the measuring arm 3 is moved by controlling the movement of the fork 8, the elastic device is compressed and generates elastic force. After releasing the fork 8, the elastic force causes the measuring arm 3 to move toward the surface of the object to be measured, thereby making the probe 4 contact the surface of the object to be measured.

[0037] Since the above technical solution can only measure the thickness of objects with a shallow depth, the following improvements are needed when measuring objects with a certain depth:

[0038] like Figure 1-2 As shown, one end of the outer frame 1 is provided with a first insertion hole 12, and a first extension arm 10 is provided in the first insertion hole 12. The outer frame 1 is provided with at least two sets of bolt holes 13, and the first extension arm 10 is provided with a second insertion hole 14. After the first extension arm 10 is inserted into the first insertion hole 12, the second insertion hole 14 is aligned with the bolt hole 13. The outer frame 1 is also provided with a fastener, which passes through the bolt hole 13 and the second insertion hole 14 respectively, thereby fixing the first extension arm 10 to the outer frame 1. In this embodiment, the fastener is a bolt 15.

[0039] like Figure 1As shown, one end of the first extension arm 10 is provided with an inner contact head 11. The inner contact head 11 is on the same plane as the side of the measuring groove 2 near the probe 4. When measuring a column with a certain depth, the first extension arm 10 is first inserted into the column, and then the shift fork 8 is moved to move the measuring arm 3. After the inner contact head 11 contacts the position to be measured, the shift fork 8 is released, and the probe 4 will contact the outer surface of the object to be measured. At this time, the reading on the display screen 6 on the dial 5 is the thickness of the position to be measured.

[0040] Of course, a second extension arm with the same function as the first extension arm 10 can also be fitted onto the measuring arm 3 to extend the measuring arm 3.

[0041] The above are merely preferred embodiments of this application and are 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 thickness gauge for measuring the wall thickness of a highway guardrail post, characterized by: The utility model relates to a kind of measuring arm, including: Outer frame (1), the outer frame (1) has measuring groove (2); Measuring arm (3), the measuring arm (3) is slidably connected with outer frame (1); Measuring head (4), the measuring head (4) is arranged in one end of measuring arm (3); Dial plate (5), the dial plate (5) is connected with measuring arm (3); Moving assembly, the moving assembly is arranged on dial plate (5), and the moving assembly is used to control measuring arm (3) movement; First extension arm (10), the first extension arm (10) is detachably connected with outer frame (1); Inner contact head (11), the inner contact head (11) is arranged in one end of first extension arm (10), and the inner contact head (11) is in the same plane with the face in measuring groove (2) close to measuring head (4).

2. A thickness gauge for measuring the wall thickness of a highway guardrail post according to claim 1, characterized in that: The moving assembly includes fork (8), the fork (8) is hinged on dial plate (5), and one end of the fork (8) is fixed with one end of measuring arm (3).

3. A thickness gauge for measuring the wall thickness of a highway guardrail post according to claim 1, characterized in that: One end of the outer frame (1) is provided with a first jack (12), and the first extension arm (10) is inserted into the first jack (12).

4. A thickness gauge for measuring the wall thickness of a highway guard rail post according to claim 3, characterized in that: At least two groups of bolt holes (13) are provided on the outer frame (1), a second jack (14) is provided on the first extension arm (10), and a fastener is provided on the outer frame (1), the fastener passes through the bolt hole (13) and the second jack (14) respectively to fix the first extension arm (10) and the outer frame (1).

5. A thickness gauge for measuring the wall thickness of a highway guard rail post according to claim 4, characterized in that: The fastener is a bolt (15).

6. A thickness gauge for measuring the wall thickness of a highway guard rail post according to claim 1, characterized in that: A gripping portion (16) is provided on the outer frame (1).

7. A thickness gauge for measuring the wall thickness of a highway guard rail post according to claim 1, characterized in that: A display screen (6) and a key (7) are provided on the dial plate (5).

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