Height difference ruler for measuring height difference between expansion joint and bridge floor

Abstract

The utility model discloses a height difference ruler for measuring the height difference between an expansion joint and a bridge floor, which relates to the technical field of height difference rulers and comprises a first ruler body, a second ruler body is hinged to the right side end of the first ruler body, a third ruler body is hinged to the right side end of the second ruler body, and sliding grooves are formed in the second ruler body and the third ruler body in a penetrating manner. Two sliding rails are fixedly installed at the lower end of the first ruler body, T-shaped sliding blocks are installed in sliding grooves formed in the second ruler body and the third ruler body in a penetrating mode in a sliding mode, and a slidable graduated scale is installed on the T-shaped sliding blocks in a penetrating mode in a sliding mode. The slidable graduated scale is put down, the slidable graduated scale is adjusted to a measurement position, and reading is performed after the fastening knob is tightened, so that the height difference measurement value of the expansion joint and the bridge floor is obtained, and the problem of errors caused by manual angle observation in the existing detection means and the problem of contact indirect errors of feeler gauge and ruler detection are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of height difference gauges, in particular to a height difference gauge used for measuring the height difference between an expansion joint and a bridge deck. Background Art

[0002] When the expansion joint is installed, the allowable height difference between its top surface and the bridge deck is 2mm. The inspection method and frequency specifications only indicate the use of a ruler, and 5 points are measured on each side of the expansion device. There is no detailed description of the inspection method, and the current specifications do not contain specific inspection methods and inspection instruments for the height difference between the expansion joint and the bridge deck.

[0003] At present, the detection method of three-meter ruler and feeler gauge is generally used to detect it. First, the ruler is crossed across the expansion device and the road (bridge) deck, and then the gap is measured with a feeler gauge or steel ruler as the height difference between the expansion joint and the bridge deck. This test method has the defects of inconvenient operation, large measurement data error, and great influence of human factors. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a height difference ruler for measuring the height difference between an expansion joint and a bridge deck, which solves the problem of currently commonly used detection method of using a three-meter ruler and a feeler gauge to detect it. First, a ruler is placed across the expansion joint and the road (bridge) surface, and then a feeler gauge or a steel ruler is used to measure the gap between them as the height difference between the expansion joint and the bridge deck. This test method has the disadvantages of inconvenient operation, large measurement data errors, and large influence of human factors.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A height difference ruler for measuring the height difference between an expansion joint and a bridge deck comprises a first ruler body, a second ruler body is hingedly connected to the right end of the first ruler body, a third ruler body is hingedly connected to the right end of the second ruler body, a slide groove is provided through the second ruler body and the third ruler body, two slide rails are fixedly installed at the lower end of the first ruler body, a T-shaped slider is slidably installed in the slide groove provided through the second ruler body and the third ruler body, and a slidable scale is slidably installed on the T-shaped slider.

[0009] Preferably, a pulley is provided at the lower end of the slidable scale, a return spring is provided between the slidable scale and the T-shaped slider, and a tightening knob is threadedly mounted on the T-shaped slider.

[0010] Preferably, the slidable ruler has a length of 60 cm and a height of 8 cm, and is perpendicular to the first ruler body, the second ruler body and the third ruler body. The scale of the slidable ruler is 0 in the middle and can be slid up and down for measurement with an accuracy of 0.1 mm.

[0011] (III) Beneficial effects

[0012] When the utility model detects the height difference between the expansion joint and the bridge deck, the first ruler is placed flat on the bridge deck, the slidable ruler is put down, the slidable ruler is adjusted to the measuring position, and the reading is taken after the tightening knob is tightened, which is the measured value of the height difference between the expansion joint and the bridge deck, thereby solving the error problem caused by the artificial observation angle in the existing detection means and the contact indirect error problem of the feeler gauge and the ruler detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural diagram of the entire utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of the structure at A;

[0016] Figure 3 This is a structural diagram of the T-shaped slider of the utility model;

[0017] Figure 4 It is a structural diagram of the slidable scale of the utility model.

[0018] Legend: 11. First scale body; 12. Second scale body; 13. Third scale body; 14. Slide rail; 15. T-shaped slider; 16. Tightening knob; 17. Sliding scale; 18. Pulley; 19. Return spring. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides a height difference ruler for measuring the height difference between the expansion joint and the bridge deck, which effectively solves the current detection method that generally uses a three-meter ruler and a feeler gauge to detect it. First, the ruler is crossed across the expansion device and the road (bridge) surface, and then the gap is measured with a feeler gauge or a steel ruler as the height difference between the expansion joint and the bridge deck. This test method has the defects of inconvenient operation, large measurement data error, and large influence of human factors. When detecting the height difference between the expansion joint and the bridge deck, the utility model places the first ruler body flat on the bridge deck, puts down the slidable ruler, adjusts the slidable ruler to the measuring position, tightens the locking knob and reads the value, which is the measured value of the height difference between the expansion joint and the bridge deck. The error problem caused by the human observation angle in the existing detection means and the contact indirect error problem of the feeler gauge and ruler detection are solved.

[0020] Example

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application is to effectively solve the current common detection method of using a three-meter ruler and a feeler gauge to detect it. First, the ruler is placed across the telescopic device and the road (bridge) surface, and then the gap is measured with a feeler gauge or a steel ruler as the height difference between the expansion joint and the bridge surface. This test method has the technical problems of inconvenient operation, large measurement data error, and large human factor influence. The overall idea is as follows:

[0022] In view of the problems existing in the prior art, the utility model provides a height difference ruler for measuring the height difference between an expansion joint and a bridge deck, comprising a first ruler body 11, a second ruler body 12 is hingedly connected to the right end of the first ruler body 11, a third ruler body 13 is hingedly connected to the right end of the second ruler body 12, a slide groove is penetrated through the second ruler body 12 and the third ruler body 13, two slide rails 14 are fixedly installed at the lower end of the first ruler body 11, a T-shaped slider 15 is slidably installed in the slide groove penetrated through the second ruler body 12 and the third ruler body 13, a slidable scale 17 is slidably installed on the T-shaped slider 15, the height difference ruler is a foldable ruler, and the height difference ruler is not less than 6 The slidable scale 17 is a two-way scale, the length of which is the same as the height of the first scale 11, the accuracy of which is 0.1 mm, and the scale is measured by sliding up and down with the center of the scale as the 0 scale line. The slidable scale 17 is provided with a fastening knob 16, which can fix the position between the slidable scale 17 and the first scale 11. After use, the slidable scale 17 can be folded and stored in the first scale 11.

[0023] A pulley 18 is provided at the lower end of the slidable scale 17, a return spring 19 is provided between the slidable scale 17 and the T-shaped slider 15, a tightening knob 16 is installed on the T-shaped slider 15 through a thread, the length of the slidable scale 17 is 60 cm, the height is 8 cm, and it is perpendicular to the first scale body 11, the second scale body 12 and the third scale body 13. The scale of the slidable scale 17 takes the middle as the 0 scale, and can be slid up and down for measurement with an accuracy of 0.1 mm. When the utility model detects the height difference between the expansion joint and the bridge deck, the first scale body 11 is placed flat on the bridge deck, the second scale body 12 and the third scale body 13 are opened to be parallel to the first scale body, and then the slidable scale 17 is put down, the slidable scale 17 is adjusted to the measuring position, and the reading is taken after tightening the tightening knob 16, which is the measured value of the height difference between the expansion joint and the bridge deck, thereby solving the error problem caused by the artificial observation angle in the existing detection means and the contact indirect error problem of the feeler gauge and the ruler detection.

[0024] Working principle: The height difference ruler is a foldable ruler with a length of not less than 60cm. When in use, the second ruler body 12 and the third ruler body 13 can be taken out from the inside of the first ruler body 11, and can be folded into the first ruler body 11 after use. The first ruler body 11 is provided with a vertical slide rail 14, so that the height difference ruler can slide vertically; the slidable scale 17 is a bidirectional scale, the length is the same as the height of the first ruler body 11, the accuracy is 0.1mm, and the scale center is used as the 0 scale line for sliding up and down measurement. The slidable scale 17 is provided with a fastening knob 16, which can fix the slidable scale 17 and The slidable scale 17 can be folded into the first scale body 11 after use. When detecting the height difference between the expansion joint and the bridge deck, the utility model places the first scale body 11 flat on the bridge deck, opens the second scale body 12 and the third scale body 13 to make them parallel to the first scale body, then puts down the slidable scale 17, adjusts the slidable scale 17 to the measuring position, tightens the fastening knob 16 and reads the value, which is the measured value of the height difference between the expansion joint and the bridge deck, solves the error problem caused by the human observation angle in the existing detection means, and solves the contact indirect error problem of the feeler gauge and the ruler detection.

[0025] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A height difference ruler for measuring the height difference between an expansion joint and a bridge deck, comprising a first ruler body (11), characterized in that: The right end of the first ruler (11) is hingedly connected to the second ruler (12), the right end of the second ruler (12) is hingedly connected to the third ruler (13), and a sliding groove is provided through the second ruler (12) and the third ruler (13); Wherein, two slide rails (14) are fixedly mounted on the lower end of the first ruler (11); A T-shaped slider (15) is slidably mounted in a sliding groove extending through the second ruler body (12) and the third ruler body (13), and a slidable scale (17) is slidably mounted through the T-shaped slider (15).

2. The height difference ruler for measuring the height difference between an expansion joint and a bridge deck according to claim 1, characterized in that: A pulley (18) is provided at the lower end of the slidable scale (17).

3. The height difference ruler for measuring the height difference between an expansion joint and a bridge deck according to claim 2, characterized in that: A return spring (19) is provided between the slidable scale (17) and the T-shaped slide block (15).

4. The height difference ruler for measuring the height difference between an expansion joint and a bridge deck according to claim 3, characterized in that: A tightening knob (16) is threadedly mounted on the T-shaped slider (15).

5. The height difference ruler for measuring the height difference between an expansion joint and a bridge deck according to claim 4, characterized in that: The slidable scale (17) has a length of 60 cm and a height of 8 cm, and is perpendicular to the first scale body (11), the second scale body (12) and the third scale body (13).

6. The height difference ruler for measuring the height difference between an expansion joint and a bridge deck according to claim 5, characterized in that: The scale of the slidable scale (17) is 0 in the middle and can be slid up and down for measurement with an accuracy of 0.1 mm.

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