Wedge-shaped gap measuring scale

Abstract

A wedge-shaped gap measuring scale belongs to the technical field of measurement. The device comprises a measuring head, a measuring head conductor, a wedge-shaped measuring main body, a main measuring tape and a vernier measuring tape, the measuring head is arranged at the front end of the measuring head conductor, the main measuring tape is arranged on the wedge-shaped measuring main body, the vernier measuring tape is arranged on the measuring head conductor, the wedge-shaped measuring main body is in sliding fit with the measuring head conductor, and the front end of the wedge-shaped measuring main body is provided with a wedge-shaped measuring surface. The measuring head abuts against the to-be-measured gap, and the front end of the wedge-shaped measuring body stretches into the to-be-measured gap, so that the wedge-shaped measuring surface clamps the to-be-measured gap. The problems that an existing wedge-shaped measuring tool is narrow in measuring range (generally smaller than or equal to 2 mm) and cannot give consideration to full-measuring-range high precision, other tools need to be replaced when a gap larger than 2 mm is measured, data splitting and operation complexity are caused, errors are easily caused by manual reading, a simple wedge-shaped ruler lacks an integrated displacement quantification mechanism, and direct and accurate reading is difficult to achieve are solved. Full-scale measurement can be completed through single clamping, and repeated replacement of tools is avoided.

Description

Technical Field

[0001] This utility model relates to a wedge-shaped gap measuring ruler and belongs to the field of measurement technology. Background Technology

[0002] In fields such as machinery manufacturing, aerospace, and precision assembly, accurate measurement of narrow gaps is a key technical aspect of ensuring equipment reliability. Traditional gap measurement methods mainly rely on the following tools:

[0003] 1. Feeler gauge: It requires repeated replacement of feeler gauges of different thicknesses, which is inefficient; it can only measure discrete dimensions (such as 0.05mm intervals) and cannot provide continuous readings; it is difficult to reach into narrow spaces and is prone to human error.

[0004] 2. Ordinary wedge feeler gauge: It converts the gap width through taper, but lacks a displacement quantification mechanism, requiring the use of calipers for reading, which is cumbersome; it has a single-volume range design (usually only covering 0-1mm), and the tool needs to be replaced when the range is exceeded.

[0005] 3. Electronic digital calipers: They are expensive, have poor resistance to oil and vibration, and are not suitable for industrial sites; the probe structure cannot be adapted to wedge-shaped gap measurement scenarios.

[0006] In summary, traditional high-precision tools (such as vernier calipers) cannot wedge their probes into gaps, while dedicated wedge rulers lack a precise scale system. At the same time, traditional wedge rulers only support small gap measurements (usually ≤2mm), and large gaps require switching tools, resulting in loss of data continuity. Using multiple tools together increases the number of measurement steps, which is particularly inconvenient in confined spaces.

[0007] Therefore, there is an urgent need to develop a wedge-shaped gap measuring ruler to solve the above-mentioned technical problems. Utility Model Content

[0008] The purpose of this invention is to solve the problems of existing wedge measuring tools having a narrow measuring range (typically ≤2mm) and being unable to achieve high accuracy across the entire measuring range. When measuring gaps larger than 2mm, other tools must be used, leading to fragmented data and cumbersome operation. Furthermore, manual reading is prone to introducing errors. Simple wedge rulers lack an integrated displacement quantization mechanism, making it difficult to achieve direct and accurate readings. A brief overview of this invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of this invention. It is not intended to identify key or essential parts of this invention, nor is it intended to limit the scope of this invention.

[0009] The technical solution of this utility model:

[0010] The wedge gap measuring gauge includes a probe, a probe conductor, a wedge measuring body, a main measuring scale, and a vernier measuring scale. The probe is mounted on the front end of the probe conductor, the main measuring scale is mounted on the wedge measuring body, and the vernier measuring scale is mounted on the probe conductor. The wedge measuring body and the probe conductor slide together. The front end of the wedge measuring body has a wedge measuring surface. The probe abuts against the gap to be measured, and the front end of the wedge measuring body probes into the gap to be measured, so that the wedge measuring surface locks the gap to be measured.

[0011] Preferably, both the vernier scale and the main scale are provided with graduation lines. When the front end face of the probe is aligned with the front end face of the wedge measuring head, the zero graduation line on the vernier scale is aligned with the zero graduation line on the main scale.

[0012] Preferably, a wide measuring surface is provided on the rear side of the front end face of the probe, and a vernier auxiliary measuring scale is also installed on the probe conductor. Both the vernier auxiliary measuring scale and the main measuring scale are provided with scale lines. When the wide measuring surface is aligned with the front end of the wedge measuring scale, the zero scale line on the vernier auxiliary measuring scale is aligned with the scale line at the front end of the main measuring scale.

[0013] Preferably, the wedge-shaped measuring surface is symmetrically arranged on the upper and lower sides of the front end of the wedge-shaped measuring body, and the upper and lower wedge-shaped measuring surfaces extend forward and gradually converge at a point.

[0014] Preferably, the probe conductor includes a probe conductor base plate, a vernier measuring scale and a vernier auxiliary measuring scale are both mounted on the conductor base plate, and the vernier measuring scale and the vernier auxiliary measuring scale are arranged parallel to each other vertically, with the wedge-shaped measuring body slidably disposed between the vernier measuring scale and the vernier auxiliary measuring scale.

[0015] Preferably, the vernier measuring scale and the vernier auxiliary measuring scale are respectively installed on the conductor base plate through the conductor scale body limiting plate, and the conductor scale body limiting plates on the upper and lower sides restrict the wedge measuring body to slide only in the forward and backward displacement direction parallel to the vernier measuring scale and the vernier auxiliary measuring scale.

[0016] Preferably, a groove is machined at the central axis of the wedge-shaped measuring body, and the probe slides back and forth along the groove.

[0017] Preferably, the probe slides in a groove via a probe conductor connecting piece, and is fixedly connected to the conductor base plate via the probe conductor connecting piece; the probe is fixedly connected to the probe conductor connecting piece via a locking probe cover plate.

[0018] Preferably, a locking screw is threadedly installed on the conductor base plate, and when the locking screw is tightened, the probe conductor and the wedge-shaped measuring body are relatively fixed.

[0019] This utility model has the following beneficial effects:

[0020] 1. The integrated structure of the wedge-shaped measuring body and the probe conductor of this utility model allows for full-range measurement to be completed in a single clamping, avoiding repeated tool changes;

[0021] 2. This utility model achieves seamless coverage of 0-2mm small gap and 2-10mm large gap measurements by using the synergy of the vernier measuring scale and the vernier auxiliary measuring scale, combined with the reference switching between the front end face of the probe and the wide measuring surface, thus eliminating the range limitations of traditional tools.

[0022] 3. The conductor ruler limiting plate of this utility model forces the wedge-shaped measuring body to slide only along the front and rear displacement direction. Combined with the automatic centering characteristics of the symmetrical wedge measuring surface, it effectively prevents skew errors.

[0023] 4. The wedge-shaped measuring head of this utility model has a converging design that can reach into narrow gaps, and the sliding cooperation between the sliding groove and the probe conductor linkage plate ensures that the probe is accurately positioned in the confined space;

[0024] 5. The main measuring scale of this utility model is divided into upper and lower sets of scale lines, which are respectively matched with the vernier measuring scale and the vernier auxiliary measuring scale. With the immediate fixing function of the locking screw, it ensures that there is no displacement deviation during the reading process. Attached Figure Description

[0025] Figure 1 This is a front view of the wedge-shaped gap measuring ruler according to a specific embodiment of this utility model;

[0026] Figure 2 This is a rear view of the wedge-shaped gap measuring ruler according to a specific embodiment of this utility model;

[0027] Figure 3 This is a perspective view of the wedge-shaped gap measuring ruler described in the second specific embodiment of this utility model;

[0028] Figure 4 This is an exploded view of the probe conductor described in the second specific embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the probe conductor according to the second specific embodiment of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the wedge-shaped measuring body according to the second specific embodiment of this utility model;

[0031] Figure 7 This is a schematic diagram of the probe structure described in the second specific embodiment of this utility model;

[0032] Figure 8 This is a schematic diagram of the probe conductor linkage plate according to the second specific embodiment of this utility model;

[0033] Figure 9This is a schematic diagram of the cooperation between the wedge-shaped measuring body and the probe conductor according to the second specific embodiment of this utility model;

[0034] Figure 10 yes Figure 9 AA cross-section view;

[0035] Figure 11 yes Figure 9 BB cross-section;

[0036] Figure 12 This is a diagram illustrating the usage state of the 0-2mm small gap measurement as described in the third specific embodiment of this utility model;

[0037] Figure 13 This is a diagram showing the usage state when measuring a large gap of 2-10mm as described in the third specific embodiment of this utility model.

[0038] In the diagram: 1-Probe, 2-Probe conductor, 3-Wedge-shaped measuring body, 4-Main measuring scale, 5-Vernier measuring scale, 6-Wedge-shaped measuring surface, 7-Wide measuring surface, 8-Vernier auxiliary measuring scale, 9-Locking screw, 11-Probe conductor linkage plate, 12-Securing probe cover plate, 21-Probe conductor base plate, 22-Conductor scale body limiting plate, 31-Slide groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0040] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections (i.e., non-detachable connections) include, but are not limited to, conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include, but are not limited to, conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0041] Specific implementation method one: Combining Figures 1-2This embodiment describes a wedge-shaped gap measuring ruler, which includes a probe 1, a probe conductor 2, a wedge-shaped measuring body 3, a main measuring ruler 4, and a vernier measuring ruler 5. The probe 1 is mounted on the front end of the probe conductor 2, the main measuring ruler 4 is mounted on the wedge-shaped measuring body 3, and the wedge-shaped measuring body 3 drives the main measuring ruler 4 to move synchronously. The vernier measuring ruler 5 is mounted on the probe conductor 2, and the wedge-shaped measuring body 3 and the probe conductor 2 are in sliding fit. The front end of the wedge-shaped measuring body 3 has a wedge-shaped measuring surface 6.

[0042] Both the vernier measuring scale 5 and the main measuring scale 4 are provided with scale lines. When the front end face of the probe 1 is aligned with the front end of the wedge measuring surface 6, the zero scale line on the vernier measuring scale 5 is aligned with the zero scale line on the main measuring scale 4, that is, the zero scales of the two scales coincide. During measurement, the displacement is directly determined by the alignment position of the vernier scale and the main scale.

[0043] The wedge-shaped measuring surface 6 is symmetrically arranged on the upper and lower sides of the front end of the wedge-shaped measuring body 3. The upper and lower wedge-shaped measuring surfaces 6 extend forward and gradually converge at a point. The wedge-shaped measuring surface 6 adopts a structure of symmetrical convergence at the top and bottom. When it is probed into the gap, it automatically centers and clamps, and the symmetrical inclined surface converts the gap width into linear displacement. The convergence point design enhances the adaptability of the slit.

[0044] The probe conductor 2 is threaded with a locking screw 9. When the locking screw 9 is tightened, the probe conductor 2 is pressed against the wedge-shaped measuring body 3, achieving instantaneous relative fixation.

[0045] The probe 1 serves as a fixed reference surface, and its contact with the edge of the gap provides the starting point for measurement. The vernier scale 5 and the main scale 4 generate relative displacement readings.

[0046] The operation process of this embodiment is as follows:

[0047] Step 1: Measurement Preparation

[0048] The probe 1 is fixed to the front end of the probe conductor 2, the main measuring scale 4 is installed on the surface of the wedge-shaped measuring body 3, and the vernier measuring scale 5 is fixed on the probe conductor 2;

[0049] Ensure that the wedge-shaped measuring body 3 and the probe conductor 2 slide together. The wedge-shaped measuring surfaces 6 are symmetrically distributed on the upper and lower surfaces of the front end of the wedge-shaped measuring body 3, and gradually converge at a point as they extend forward.

[0050] Step 2: Zero-point calibration

[0051] Push the wedge-shaped measuring body 3 until the front end face of the probe 1 is aligned with the front end of the wedge-shaped measuring surface 6;

[0052] Confirm that the zero mark of the vernier scale 5 is aligned with the zero mark of the main scale 4.

[0053] Step 3: Gap Measurement

[0054] The probe 1 is perpendicularly pressed against one edge of the gap to be measured;

[0055] Slide the wedge-shaped measuring body 3 forward so that the wedge-shaped measuring surface 6 enters the gap and locks in place;

[0056] Keep the probe 1 in a fixed position and observe the relative displacement between the vernier scale 5 and the main scale 4:

[0057] Read the integer scale value of main measuring scale 4;

[0058] Determine the graduation line where the vernier measuring scale 5 aligns with the main measuring scale 4, and read the decimal part.

[0059] Step 4: Anti-skewing protection

[0060] The symmetrical converging structure of the wedge-shaped measuring surface 6 automatically centers when it is inserted into the gap;

[0061] The sliding fit between the probe conductor 2 and the wedge-shaped measuring body 3 constrains the displacement direction and avoids lateral deviation.

[0062] Specific Implementation Method Two: Combining Figures 2-13 This embodiment describes a wedge gap measuring ruler, which includes a probe 1, a probe conductor 2, a wedge measuring body 3, a main measuring ruler 4, and a vernier measuring ruler 5. The probe 1 is mounted on the front end of the probe conductor 2, the main measuring ruler 4 is mounted on the wedge measuring body 3, and the vernier measuring ruler 5 is mounted on the probe conductor 2. The wedge measuring body 3 and the probe conductor 2 are in sliding fit, and the front end of the wedge measuring body 3 has a wedge measuring surface 6.

[0063] The main measuring ruler 4 has two rows of scale lines on its upper and lower sides.

[0064] When the front end of the wedge measuring surface 6 does not exceed the wide measuring surface 7, the vernier measuring scale 5 and the upper scale of the main measuring scale 4 are used by default. That is, both the vernier measuring scale 5 and the main measuring scale 4 are provided with scale lines. When the front end face of the probe 1 is aligned with the front end of the wedge measuring surface 6, the zero scale line on the vernier measuring scale 5 is aligned with the zero scale line on the upper row of the main measuring scale 4.

[0065] When the front end of the wedge measuring surface 6 moves to the position of the wide measuring surface 7, it automatically switches to the lower scale of the vernier auxiliary measuring scale 8 and the main measuring scale 4. That is, the wide measuring surface 7 is provided on the rear side of the front end face of the probe 1, and the vernier auxiliary measuring scale 8 is also installed on the probe conductor 2. Both the vernier auxiliary measuring scale 8 and the main measuring scale 4 are provided with scale lines. When the wide measuring surface 7 is aligned with the front end of the wedge measuring surface 6, the zero scale line on the vernier auxiliary measuring scale 8 is aligned with the zero scale line of the lower row of the main measuring scale 4.

[0066] The wedge-shaped measuring surface 6 is symmetrically arranged on the upper and lower sides of the front end of the wedge-shaped measuring body 3. The upper and lower wedge-shaped measuring surfaces 6 extend forward and gradually converge at a point. The wedge-shaped measuring surface 6 adopts a structure of symmetrical convergence at the top and bottom. When it is probed into the gap, it automatically centers and clamps. The symmetrical inclined surface converts the gap width into linear displacement. The convergence point design enhances the adaptability of the slit and avoids single-sided contact error.

[0067] The probe conductor 2 includes a probe conductor base plate 21, a vernier measuring scale 5 and a vernier auxiliary measuring scale 8, both mounted on the conductor base plate 21, and the vernier measuring scale 5 and the vernier auxiliary measuring scale 8 are arranged in parallel vertically. The wedge-shaped measuring body 3 is slidably set between the vernier measuring scale 5 and the vernier auxiliary measuring scale 8 to form a dual-scale reading system.

[0068] The vernier measuring scale 5 and the vernier auxiliary measuring scale 8 are respectively mounted on the conductor base plate 21 via conductor scale limiting plates 22. The conductor scale limiting plates 22 on the upper and lower sides restrict the wedge-shaped measuring body 3 to slide only in the forward and backward displacement direction parallel to the vernier measuring scale 5 and the vernier auxiliary measuring scale 8. At the same time, a groove 31 is machined at the central axis of the wedge-shaped measuring body 3. The probe 1 slides back and forth along the groove 31. The conductor scale limiting plates 22 clamp the two sides of the wedge-shaped measuring body 3, restricting it to slide only in the vernier scale direction, eliminating lateral offset, and constraining the displacement trajectory.

[0069] A locking screw 9 is threadedly installed on the conductor base plate 21. When the locking screw 9 is tightened, the probe conductor 2 and the wedge-shaped measuring body 3 are pressed together, achieving instantaneous relative fixation.

[0070] The probe 1 is slidably engaged with the slide groove 31 through the probe conductor connecting piece 11, and the probe 1 is fixedly engaged with the conductor base plate 21 through the probe conductor connecting piece 11, to ensure that the probe 1 moves linearly and maintains the consistency of the axis.

[0071] The probe 1 is fixedly engaged with the probe conductor linkage piece 11 by locking the probe cover plate 12. By locking the probe cover plate 12 to lock the probe conductor linkage piece 11, the risk of loosening of the probe 1 is eliminated, ensuring that the position of the probe 1 cannot be moved, providing a measurement reference surface, and the probe conductor linkage piece 11 transmits the reference position of the probe 1.

[0072] Specific implementation method three: Combining Figures 2-13 This embodiment describes a gap measurement method based on the wedge-shaped gap measuring ruler described in Specific Embodiment 1, which includes the following steps:

[0073] S1, Measurement preparation;

[0074] Clean the probe 1 and wedge measuring surface 6 to ensure there is no oil or debris. Check if the scales of the vernier measuring scale 5 and vernier auxiliary measuring scale 8 are clear. Check if the probe conductor 2 and wedge measuring body 3 slide smoothly. Loosen the locking screw 9 to ensure that the wedge measuring body 3 can slide freely.

[0075] S2, 0-2mm small gap measurement;

[0076] Place the front end face of probe 1 perpendicularly against one edge of the gap to be measured;

[0077] Slowly push the wedge-shaped measuring body 3 forward so that its wedge-shaped measuring surface 6 enters the gap to be measured until it is locked on both sides of the gap to be measured;

[0078] Keep probe 1 against the edge of the gap to avoid tilting, tighten locking screw 9 to fix the relative position of probe conductor 2 and wedge-shaped measuring body 3;

[0079] Observe the graduation line of the vernier measuring scale 5 aligned with the main measuring scale 4, and obtain the reading;

[0080] S3, 2-10mm large gap measurement;

[0081] Place the wide measuring surface 7 of the probe 1 against one edge of the gap to be measured;

[0082] Slowly push the wedge-shaped measuring body 3 forward so that its wedge-shaped measuring surface 6 enters the gap to be measured until it is locked on both sides of the gap to be measured;

[0083] Keep the wide measuring surface 7 against the edge of the gap to avoid tilting, tighten the locking screw 9 to fix the relative position of the probe conductor 2 and the wedge-shaped measuring body 3;

[0084] Observe the scale line aligned with the vernier scale 8 and the main scale 4 to obtain the reading.

[0085] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, this utility model will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by this utility model.

[0086] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wedge-shaped gap measuring ruler, characterized in that: It includes a probe (1), a probe conductor (2), a wedge-shaped measuring body (3), a main measuring scale (4), and a vernier measuring scale (5). The probe (1) is installed at the front end of the probe conductor (2), the main measuring scale (4) is installed on the wedge-shaped measuring body (3), and the vernier measuring scale (5) is installed on the probe conductor (2). The wedge-shaped measuring body (3) slides with the probe conductor (2), and the front end of the wedge-shaped measuring body (3) has a wedge-shaped measuring surface (6).

2. The wedge-shaped gap measuring ruler according to claim 1, characterized in that: Both the vernier measuring scale (5) and the main measuring scale (4) are provided with scale lines. When the front end face of the probe (1) is aligned with the front end of the wedge measuring surface (6), the zero scale line on the vernier measuring scale (5) is aligned with the zero scale line on the main measuring scale (4).

3. The wedge-shaped gap measuring ruler according to claim 2, characterized in that: A wide measuring surface (7) is provided on the rear side of the front end face of the probe (1). A vernier scale (8) is also installed on the probe conductor (2). Both the vernier scale (8) and the main measuring scale (4) are provided with scale lines. When the wide measuring surface (7) is aligned with the front end of the wedge-shaped measuring surface (6), the zero scale line on the vernier scale (8) is aligned with the zero scale line on the main measuring scale (4).

4. The wedge-shaped gap measuring ruler according to claim 1, characterized in that: The wedge-shaped measuring surface (6) is symmetrically arranged on the upper and lower sides at the front end of the wedge-shaped measuring body (3), and the upper and lower wedge-shaped measuring surfaces (6) extend forward and gradually converge at a point.

5. The wedge-shaped gap measuring ruler according to claim 3, characterized in that: The probe conductor (2) includes a probe conductor base plate (21), a vernier measuring scale (5) and a vernier auxiliary measuring scale (8) are both installed on the conductor base plate (21), and the vernier measuring scale (5) and the vernier auxiliary measuring scale (8) are arranged in parallel vertically. The wedge-shaped measuring body (3) is slidably set between the vernier measuring scale (5) and the vernier auxiliary measuring scale (8).

6. The wedge-shaped gap measuring ruler according to claim 5, characterized in that: The vernier measuring scale (5) and the vernier auxiliary measuring scale (8) are respectively installed on the conductor base plate (21) through the conductor scale body limiting plate (22). The conductor scale body limiting plates (22) on the upper and lower sides restrict the wedge measuring body (3) to slide only in the forward and backward displacement direction parallel to the vernier measuring scale (5) and the vernier auxiliary measuring scale (8).

7. The wedge-shaped gap measuring ruler according to claim 5, characterized in that: The wedge-shaped measuring body (3) has a groove (31) machined at its central axis, and the probe (1) slides back and forth along the groove (31).

8. The wedge-shaped gap measuring ruler according to claim 7, characterized in that: The probe (1) is slidably engaged with the slide groove (31) through the probe conductor connecting piece (11), and the probe (1) is fixedly engaged with the conductor base plate (21) through the probe conductor connecting piece (11).

9. The wedge-shaped gap measuring ruler according to claim 8, characterized in that: The probe (1) is fixedly engaged with the probe conductor linkage piece (11) by locking the probe cover plate (12).

10. The wedge-shaped gap measuring ruler according to claim 5, characterized in that: The conductor base plate (21) is threaded with a locking screw (9). When the locking screw (9) is tightened, the probe conductor (2) and the wedge-shaped measuring body (3) are fixed relative to each other.

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