CN205138387U - A special slide caliper rule for short -term test article clearance - Google Patents

Abstract

The utility model discloses a special caliper for quickly detecting the gap between objects, which comprises a main caliper and an auxiliary caliper; the head of the main caliper is provided with a main caliper jaw, and the tail of the main caliper is provided with a The center of the round pin is the arc-shaped main scale plate of the circle center, and the scale lines with calibration values are distributed on the main scale plate according to the circumference; the head of the secondary caliper is provided with a secondary caliper jaw, and the secondary caliper An arc sub-scale plate with the center of the connecting round pin as the center is provided at the tail, and an indicating arrow for reading the corresponding scale line on the main scale plate is provided on the sub-scale plate. The special caliper for quickly detecting the gap between objects of the utility model can conveniently complete the measurement of the assembly gap of specific components such as vehicle machinery, reduce the working intensity of on-site testing personnel, and improve working efficiency.

Description

Dedicated calipers for fast detection of object gaps

technical field

The utility model belongs to the field of detecting the gap size of components, in particular to a special caliper for quickly detecting the gap between objects.

Background technique

In the field of vehicle equipment maintenance, assembly or technical research, it is often necessary to detect the gap size between different parts of the machine. Normally, the assembly clearance of components can be completed with common measuring tools such as rulers, vernier calipers, feeler gauges or feeler gauges, but for the clearance detection of some special parts, for example, it is necessary to quickly complete the object on the vehicle equipment that moves or stays for a short time For gap detection, due to space constraints, it is often impossible to complete the gap detection in a short time by using general-purpose measuring tools, or the accuracy of the detection results cannot meet the predetermined requirements. Therefore, it is necessary to specially design a special measurement instrument with a certain measurement range and measurement accuracy, so as to quickly complete the gap detection of specific assembly objects of vehicle equipment.

Contents of the invention

The purpose of this utility model is to address the deficiencies of the above-mentioned technologies, and provide a special caliper for quickly detecting the gap between objects, which can easily complete the measurement of the assembly gap of specific parts such as vehicle machinery, reduce the work intensity of on-site inspection personnel, and improve work efficiency. .

In order to achieve the above purpose, the special caliper designed by the utility model for quickly detecting the gap between objects includes a main caliper and an auxiliary caliper that is rotatably connected to the main caliper through a connecting round pin; the head of the main caliper is provided with a main Caliper jaws, the tail of the main caliper is provided with an arc-shaped main scale plate with the center of the connecting round pin as the center, and the main scale plate is distributed with scale lines with calibration values according to the circumference; the auxiliary The head of the caliper is provided with a secondary caliper jaw, and the tail of the secondary caliper is provided with an arc-shaped secondary scale plate centered on the center of the connecting round pin. The indicator arrow corresponding to the scale line on the scale plate; when the main caliper jaw coincides with the auxiliary caliper jaw, the indicator arrow corresponds to the zero scale line on the main scale plate, and the main caliper clamp The actual straight-line distance between the mouth and the jaws of the auxiliary caliper is the same as the indicated arrow corresponding to the calibration value of the scale line on the main scale plate.

Further, the point where the scale line intersects the inner arc edge line of the main scale plate is the starting point of the scale line, and the point where the zero scale line intersects the inner arc edge line of the main scale plate is the zero scale line starting point , the calibration value difference between adjacent scale marks is L; the inner arc radius of the main scale plate is the same as the outer arc radius of the secondary scale plate and is A, and the jaws of the main caliper and the connecting round pin The distance between the center of the circle and the distance between the jaws of the auxiliary caliper and the center of the connecting pin is equal to B, and the ratio of A to B is a constant K; The linear distance difference between the starting point of the line is the product of the calibration value difference L and the constant K.

Further, the scale lines are marked on the main scale plate from inside to outside, and from small to large.

Further, the jaws of the main caliper and the jaws of the auxiliary caliper have the same shape, and the cross-sections are both circular arcs. When the jaws of the main caliper coincide with the arc surface of the jaws of the auxiliary caliper, the The scale line indicating that the arrow corresponds to the main scale plate is the zero scale line.

Compared with the prior art, the utility model has the following advantages: the special caliper of the utility model for quickly detecting the gap between objects can conveniently complete the measurement of the assembly gap of specific parts such as vehicle machinery, and reduce the work intensity of on-site testing personnel. Improve work efficiency; moreover, the measurement range and measurement accuracy of the special caliper can be set separately according to the site conditions and measurement requirements of the detected object.

Description of drawings

Fig. 1 is the structural schematic diagram of the special-purpose caliper that the utility model is used for fast detection object gap;

Fig. 2 is a schematic structural view of the main caliper in Fig. 1;

Fig. 3 is the structural representation of secondary caliper in Fig. 1;

Fig. 4 is a schematic diagram of the process of using the special caliper shown in Fig. 1 .

The labels of the components in the figure are as follows: main caliper 1 (in which: main caliper jaw 1a, main round pin hole 1b, main scale plate 1c), auxiliary caliper 2 (in which: auxiliary caliper jaw 2a, auxiliary round pin hole 2b, auxiliary caliper Scale plate 2c, indicator arrow 2d), connecting round pin 3, target object 4.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

The special caliper used to quickly detect the gap between objects as shown in Figure 1 includes a main caliper 1 and an auxiliary caliper 2 . As shown in Figure 2, the head of the main caliper 1 is provided with a main caliper jaw 1a, the middle part is provided with a main round pin hole 1b for installing the connecting round pin 3, and the tail is provided with a circular arc with the center of the connecting round pin 3 as the center. The main scale plate 1c has scale lines with calibration values distributed on the circumference; as shown in Figure 3, the head of the auxiliary caliper 2 is provided with an auxiliary caliper jaw 2a, and the middle part is provided with a mounting and connecting round pin 3 The auxiliary round pin hole 2b of the rear part is provided with an arc-shaped auxiliary scale plate 2c with the center of the connecting round pin 3 as the center of the circle, and the auxiliary scale plate 2c is provided with an indicator arrow 2d for reading the corresponding scale line on the main scale plate 1c.

The inner arc radius of the main scale plate 1c is the same as the outer arc radius of the auxiliary scale plate 2c and is A, the distance between the main caliper jaw 1a and the center of the connecting round pin 3 is the same as that between the auxiliary caliper jaw 2a and the connecting round pin round pin 3 The distance is equal and is B, the ratio of A to B is a constant K, and the constant K is the magnification of the scale line spacing of the special caliper for gap detection in this embodiment; the main caliper 1 and the auxiliary caliper 2 are connected into one body through the connecting round pin 3. The round pin 3 can be a rivet structure, and the main caliper 1 and the auxiliary caliper 2 are connected into one body by cooling after hot riveting, and can also be designed into other structural forms, so that the main caliper 1 and the auxiliary caliper 2 are closely bonded and ensure that the main caliper 1 and the auxiliary caliper The auxiliary caliper 2 can freely rotate around the connecting round pin 3 without clearance.

When the main caliper jaw 1a coincides with the auxiliary caliper jaw 2a, the scale line of the main scale plate 1c corresponding to the indicator arrow 2d is the zero scale line, and the actual straight-line distance between the main caliper jaw 1a and the auxiliary caliper jaw 2a is the same as the indication Arrow 2d corresponds to the same calibration value of the scale line on the main scale plate 1c; the point where the scale line crosses the inner arc edge line of the main scale plate 1c is the starting point of the scale line, and the point where the zero scale line intersects the inner arc edge line of the main scale plate 1c is the starting point of the zero scale line, and the calibration value difference between adjacent scale lines is L, and the calibration value difference L can be set according to predetermined requirements. The linear distance difference between the starting point of the adjacent scale line on the main scale plate and the starting point of the zero scale line is the product of the calibration value difference L and the constant K; and, the scale line on the main scale plate 1c is from inside to outside, and from small to large Make an annotation.

In this embodiment, the jaws of the main caliper and the jaws of the auxiliary caliper have the same shape, and the cross-sections are all circular arcs. The scale marks on the scale plate are zero scale marks. Certainly, the profile of the main caliper jaw and the auxiliary caliper jaw can also be directly designed as a small round bump.

The following describes the setting of the scale line in detail:

When the arc surface of the main caliper jaw 1a and the auxiliary caliper jaw 2a are tangentially coincident, the calibration value of the scale line corresponding to the indicator arrow 2d on the main scale plate 1c and the auxiliary scale plate 2c is set to zero; when the main caliper When the actual straight-line distance between the jaw 1a and the auxiliary caliper jaw 2a is 1mm, the calibration value of the scale line on the main scale plate 1C corresponding to the indicator arrow 2d is also 1mm, and the starting point of the scale line and the zero scale line of the calibration value 1mm The linear distance from the starting point is K×1mm. Similarly, when the actual linear distance between the main caliper jaw 1a and the auxiliary caliper jaw 2a is S, the calibration value of the scale line on the main scale plate 1C corresponding to the indicator arrow 2d is also S, and the starting point of the S scale line The linear distance from the starting point of the zero scale line is K×S. It can be seen that the straight-line distance between the starting point of all scale lines and the zero scale line starting point is the product of the calibration value of the scale line and the constant K. When the calibration value difference between two adjacent scale lines is set to 0.2mm, the adjacent scale line The linear distance difference between the starting point of the line and the starting point of the zero scale line is K×0.2mm.

In conjunction with shown in Figure 4, the usage method of the special-purpose caliper of the present embodiment is as follows:

1) Put the main caliper jaw 1a and the auxiliary caliper jaw 2a of the special caliper into the notch 4 of the target object to be measured, and then open the main caliper jaw 1a and the auxiliary caliper jaw 2a so that the main caliper jaw 1a and the auxiliary caliper The jaws 2a are respectively in contact with the surface of the target object 4 to stabilize the position of the special caliper;

2) On the main scale plate 1c of the main caliper 1, read the calibration value of the scale line corresponding to the indicating arrow 2d of the auxiliary caliper 2, that is to complete the gap measurement of the target object 4.

By using the special caliper in this embodiment, it is possible to quickly complete the gap detection of specific parts such as vehicle equipment, and improve the work efficiency of on-site detection operations.

Claims (4)

1. a kind of special-purpose caliper that is used for rapid detection object gap, it is characterized in that: comprise main caliper (1) and the auxiliary caliper (2) that is connected with described main caliper (1) by connecting round pin (3) rotation; The head of the main caliper (1) is provided with a main caliper jaw (1a), and the afterbody of the main caliper (1) is provided with an arc-shaped main scale plate ( 1c), the main scale plate (1c) is distributed with scale lines with calibration values on the circumference; the head of the auxiliary caliper (2) is provided with an auxiliary caliper jaw (2a), and the auxiliary caliper (2 ) is provided with an arc-shaped secondary scale plate (2c) with the center of the connecting round pin (3) as the center of the circle, and the secondary scale plate (2c) is provided with the main scale plate (1c) for reading The indicator arrow (2d) corresponding to the scale line on the top; when the main caliper jaw (1a) coincides with the auxiliary caliper jaw (2a), the indicator arrow (2d) corresponds to the main scale plate (1c) The scale line is the zero scale line, and the actual linear distance between the main caliper jaw (1a) and the secondary caliper jaw (2a) corresponds to the main scale plate (1c) with the indicator arrow (2d) The scaled value on the upper scale mark is the same. 2. The special caliper for quickly detecting object gaps according to claim 1, characterized in that: the point where the scale line intersects with the arc edge line inside the main scale plate (1c) is the starting point of the scale line, so The point where the zero scale line intersects with the arc edge line inside the main scale plate (1c) is the zero scale line starting point, and the calibration value difference between adjacent scale lines is L; the inner arc of the main scale plate (1c) The radius is the same as the outer arc radius of the secondary scale plate (2c) and is A, and the distance between the main caliper jaw (1a) and the center of the connecting round pin (3) is the same as that of the secondary caliper jaw (2a). ) is equal to the distance from the center of circle of the connecting round pin (3) and is B, and the ratio of A to B is a constant K; The linear distance difference is the product of the calibration value difference L and the constant K. 3. The special caliper for quickly detecting the gap between objects according to claim 1 or 2, characterized in that: the scale marks are marked on the main scale plate (1c) from inside to outside, and from small to large. 4. The special caliper for quickly detecting the gap between objects according to claim 1 or 2, characterized in that: the jaws of the main caliper (1a) and the jaws of the auxiliary caliper (2a) have the same shape, and the cross-section Both are circular arcs, when the main caliper jaw (1a) and the auxiliary caliper jaw (2a) are tangentially coincident on the arc surface, the indicator arrow (2d) corresponds to the scale of the main scale plate (1c) The line is the zero tick mark.