An annular floating angle scale and inspection measuring tool suitable for a collet structure
By designing a circular movable angle measuring scale, the problem of difficulty in determining the tightening angle of the ferrule structure in the air pipeline system of rail vehicles was solved, realizing rapid and accurate angle detection and reducing the risk of leakage and loosening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CSR CHENGDU
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-19
AI Technical Summary
Existing technology cannot accurately determine whether the tightening angle of the ferrule structure in the air piping system of rail vehicles meets the requirements, leading to the risk of leakage or loosening, and there is a lack of effective tools for quality inspection.
Design a ring-shaped movable angle gauge suitable for ferrule structures. Through the cooperation of sliding positioning parts and scale, quickly and accurately determine whether the tightening angle of ferrule structure pipeline is qualified.
It enables rapid and accurate determination of the tightening angle of the compression fitting structure pipeline, reduces the risk of leakage and loosening, and improves the reliability of quality inspection.
Smart Images
Figure CN224382317U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ferrule structure testing technology, and more specifically, to a ring-shaped movable angle measuring scale suitable for ferrule structures. Furthermore, this utility model also relates to an inspection and measurement tool including the aforementioned ring-shaped movable angle measuring scale suitable for ferrule structures. Background Technology
[0002] The air piping system of rail vehicles generally plays a crucial role in vehicle braking, affecting the realization of various vehicle functions and operational safety. Due to structural limitations, compression fittings cannot be used for universal torque-based installation.
[0003] The existing process uses a torque surge point construction method. Excessive angle at the torque surge point can lead to pipeline leaks, while insufficient tightening angle can cause leaks and loosening risks. During quality inspection, there are no effective tools to test the tightening angle, and it is impossible to accurately determine whether the tightening angle meets the requirements by visual inspection. When leaks are found during pressure testing, the lack of angle data to support repairs can lead to incorrect repair methods.
[0004] The torque surge point construction method is a construction method that uses the torque surge point as a key node in the tightening process when tightening fasteners such as screws.
[0005] During the tightening of fasteners, the applied torque gradually increases as tools such as wrenches rotate and force is applied. When the fastener reaches a certain level of tightness, the torque experiences a sudden increase at a certain point; this is the torque spike point. This point is essentially due to a sudden change in torque caused by changes in factors such as friction between the fastener and the connected object, and material deformation.
[0006] In summary, accurately determining whether the tightening angle of the ferrule structure pipeline meets the requirements is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0007] In view of this, the purpose of this utility model is to provide a ring-shaped sliding angle measuring ruler suitable for ferrule structures. The sliding ruler moves through the sliding groove on the ruler, and the scale can quickly and accurately determine whether the tightening angle of the ferrule structure pipeline is qualified.
[0008] Another objective of this invention is to provide an inspection and measurement tool including the above-mentioned annular movable angle measuring ruler suitable for ferrule structures.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A ring-shaped movable angle measuring scale suitable for ferrule structures, comprising:
[0011] The straightedge has a semi-circular structure with a slot in the middle for engaging nuts, and the surface of the straightedge has an arc-shaped groove.
[0012] The movable ruler has a perforation on its surface, and a sliding positioning element is provided in the perforation. The sliding positioning element passes through the slide groove and can slide along the slide groove. Both the straightedge and the movable ruler have scales on their surfaces.
[0013] Preferably, the movable ruler has a semi-circular structure, and there are six perforations, with the angle between the center of two adjacent perforations and the center of the movable ruler being 30°.
[0014] Preferably, the movable ruler has a relief groove in the middle, and the relief groove is correspondingly provided with the slot.
[0015] Preferably, the slot is an isosceles trapezoid, the clearance groove is a semicircle, and the angle of the upper base angle of the isosceles trapezoid is 120°.
[0016] Preferably, the sliding positioning component includes a bolt and a nut, the bolt passing through the groove and the through hole, and the nut being threadedly connected to the bolt.
[0017] Preferably, the groove overlaps with the center of the straightedge, and the width of the groove is the same as the diameter of the perforation.
[0018] Preferably, both the straightedge and the movable ruler are transparent.
[0019] Preferably, the movable ruler is provided with degree division lines.
[0020] An inspection and measurement tool includes an annular sliding angle gauge suitable for a ferrule structure, wherein the annular sliding angle gauge suitable for a ferrule structure is any of the above-mentioned annular sliding angle gauges suitable for a ferrule structure.
[0021] This utility model provides an annular sliding angle measuring ruler suitable for a clamping structure. The ruler has a groove on its straight edge, which can engage the outer circumference of a nut on the clamping pipe. The straight edge has an arc-shaped groove, and the sliding ruler has a through hole. A sliding positioning element is installed inside the through hole. The sliding positioning element can pass through both the through hole and the arc-shaped groove on the straight edge, and can slide within the arc-shaped groove. During use, after the straight edge is pressed tightly against the pipe fitting, the sliding ruler is first pushed until its designated scale coincides with the point of torque surge on the pipe fitting. Then, during the tightening of the nut, the designated scale of the sliding ruler can be aligned with the point of torque surge of the nut. Based on the scale, it is possible to quickly and accurately determine whether the tightening angle of the clamping pipe meets the requirements. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1 A schematic diagram of the structure of the straightedge provided by this utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the movable ruler provided by this utility model;
[0025] Figure 3 This is a schematic diagram of the annular movable angle measuring ruler suitable for ferrule structures provided by this utility model.
[0026] Figure label:
[0027] 1- Straightedge; 2- Slide groove; 3- Moving ruler; 4- Perforation; 5- Leaning groove; 6- Locking groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] The core of this utility model is to provide a ring-shaped movable angle measuring gauge suitable for ferrule structures. This measuring gauge can accurately determine whether the tightening angle of the ferrule structure pipeline meets the requirements.
[0030] Another core aspect of this invention is to provide an inspection and measurement tool that includes the aforementioned annular movable angle measuring ruler suitable for ferrule structures.
[0031] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] This application provides a ring-shaped sliding angle measuring ruler suitable for a ferrule structure, comprising: a straightedge 1 and a sliding ruler 3;
[0033] Among them, the straightedge 1 has a semi-circular structure, with a groove 6 in the middle, which is used to engage the nut. The surface of the straightedge 1 is provided with an arc-shaped sliding groove 2.
[0034] The surface of the movable ruler 3 is provided with a through hole 4, and a sliding positioning component is provided in the through hole 4. The sliding positioning component passes through the slide groove 2 and can slide along the slide groove 2. The surfaces of the ruler 1 and the movable ruler 3 are both provided with scales.
[0035] For details on the structure of ruler 1, please refer to the appendix. Figure 1 Please refer to the appendix for the structure of the movable ruler 3. Figure 2 Please refer to the attached document for the overall structure. Figure 3 The straightedge 1 is a sheet-like structure, which can be considered as a semi-circular structure. A groove 6 is formed in the middle of the straightedge 1. The structure of the groove 6 matches the outer circumference of the nut. In use, the groove 6 is attached to the outer circumference of the nut, allowing it to rotate with the nut. The movable ruler 3 is also a sheet-like structure with a through hole 4. A sliding positioning element is installed inside the through hole 4. The sliding positioning element passes not only through the through hole 4 but also through the sliding groove 2 on the straightedge 1, allowing it to slide along the sliding groove 2. The arc-shaped sliding groove 2 on the straightedge 1 provides a sliding position for the movable ruler 3. The rotating path of the moving measurement, the circular path extending from the arc-shaped sliding groove 2 is coaxial with the straightedge 1, so that the movement of the sliding ruler 3 always meets the measurement requirements. When in use, the straightedge 1 is placed against the pipe fitting, the sliding ruler 3 is gently pushed, and the scale positions on the straightedge 1 and the sliding ruler 3 are recorded so that they coincide with the position of the torque surge point on the pipe fitting. As the nut is tightened, the position of the torque surge point on the front locking nut is observed to correspond to the scale on the sliding ruler 3, and the angle range between the two points of torque surge point on the pipe fitting is obtained, so as to quickly and accurately determine whether the tightening angle is qualified.
[0036] Based on the above embodiment, the movable ruler 3 has a semi-circular structure and six through holes 4. The angle between the center of two adjacent through holes 4 and the center of the movable ruler 3 is 30°.
[0037] Specifically, the movable ruler 3 is also a semi-circular sheet structure with six holes 4. The angle between the line connecting two adjacent holes 4 and the center of the movable ruler 3 is 30°. There are dividing lines at 15° positions on both sides of each hole 4 to facilitate quick reading of the angle.
[0038] In some embodiments, a clearance groove 5 is provided in the middle of the sliding ruler 3, and the clearance groove 5 is correspondingly provided with the slot 6.
[0039] Specifically, a clearance groove 5 is provided in the middle position of the sliding ruler 3. The clearance groove 5 is a semi-circular groove, and its position should correspond to the locking groove 6. Since the locking groove 6 needs to be engaged with the outer circumference of the nut and should not affect the relative rotation between the straightedge 1 and the sliding ruler 3, the locking groove 6 should be smaller than the clearance groove 5.
[0040] Based on the above embodiment, the slot 6 is an isosceles trapezoid, the clearance slot 5 is a semicircle, and the angle of the upper base angle of the isosceles trapezoid is 120°.
[0041] Specifically, the structure of the slot 6 is an isosceles trapezoid, and it should be clarified that the slot 6 can be regarded as half of a regular hexagon cut along the diagonal. The hexagonal part of the pipe fitting has the same outline and size, and the straightedge is attached to the surface of the pipe fitting to achieve coaxiality between the two.
[0042] In some embodiments, the sliding positioning element includes a bolt and a nut, with the bolt passing through the groove 2 and the through hole 4, and the nut and bolt being threaded together.
[0043] Specifically, the sliding positioning component uses bolts and nuts. The bolt shank passes through the slide groove 2. Since the bolt has a large end, the nut is larger than the diameter of the shank. Generally speaking, the width of the slide groove 2 and the diameter of the through hole 4 depend on the diameter of the bolt shank. Therefore, using nuts and bolts can prevent the sliding positioning component from falling off.
[0044] Based on the above embodiment, the center of the slide groove 2 overlaps with that of the straightedge 1, and the width of the slide groove 2 is the same as the diameter of the through hole 4.
[0045] Specifically, based on the bolt's screw diameter, the width of the groove 2 and the diameter of the through hole 4 should both be slightly larger than, or equal to, the screw diameter. This ensures that the straightedge 1 and the movable ruler 3 can rotate relative to each other while maintaining a relatively stable rotation process, facilitating reading the scale and rapid analysis.
[0046] Based on the above embodiments, both the ruler 1 and the movable ruler 3 are transparent.
[0047] Specifically, both the straightedge 1 and the movable ruler 3 are transparent sheet-like pieces with graduations on their surfaces, allowing for clear and accurate reading of the graduations even when they are used together.
[0048] Optionally, both the straightedge 1 and the movable ruler 3 are made of acrylic sheet.
[0049] Based on the above embodiment, the movable ruler 3 is provided with degree division lines.
[0050] Specifically, the area between two adjacent degree zones occupies an angle of 30°, so as to quickly determine whether the tightening angle is qualified and whether the pipeline needs to be replaced based on the zone.
[0051] Furthermore, to further describe the above-mentioned annular sliding angle measuring scale applicable to the ferrule structure, it should be clarified that the straightedge 1 and the sliding scale 3 are connected by a sliding positioning component, but can rotate relative to each other. The arc-shaped groove 2 on the straightedge 1 provides a rotation path for the sliding scale 3 to move and measure. The circular path extending from the arc-shaped groove 2 is coaxial with the straightedge 1, so that the movement of the sliding scale 3 always meets the measurement requirements.
[0052] After the ruler 1 is aligned with the pipe fitting, gently push the sliding ruler 3 so that the degree division line coincides with the position of the torque surge point on the pipe fitting.
[0053] Observe the position of the torque surge point on the front locking nut and the corresponding degree zone on the sliding ruler 3 to obtain the angle range between the two points of torque surge point on the pipe fitting, so as to quickly and accurately determine whether the tightening angle is qualified. By simultaneously observing the location of the torque surge point of the locking nut at the other end of the pipe fitting using a fully transparent ruler, the angle of two torque surge points can be detected at the same time. Taking a φ10 pipe fitting as an example, the acceptable range is a tightening angle of 60°~90°. Taking the torque surge point degree division line on the pipe fitting as the starting point, the first degree division angle range is 0~30°, the second degree division angle range is 30~60°, the third degree division angle range is 60~90°, and so on. When measuring, if the torque surge point on the locking nut is within the third degree division range, it is considered acceptable. If the pipe fitting still leaks within the acceptable range, it can be tightened again by no more than 30°. If the observed surge point is in the first or second angle division, the tightening angle is insufficient and needs to be tightened again. A reading of 60~90° is acceptable. If the observed surge point exceeds the third angle division, regardless of whether there is a leak, it is determined that the pipe needs to be replaced.
[0054] In addition to the aforementioned annular sliding angle measuring scale suitable for ferrule structures, this utility model also provides an inspection and measurement tool including the annular sliding angle measuring scale for ferrule structures disclosed in the above embodiments. The structure of other parts of this inspection and measurement tool can be found in the prior art, and will not be described in detail here.
[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0056] The above provides a detailed description of the annular movable angle measuring gauge and inspection tool suitable for ferrule structures provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A ring-shaped movable angle measuring scale suitable for a ferrule structure, characterized in that, include: The straightedge (1) has a semi-circular structure with a slot (6) in the middle. The slot (6) is used to engage nuts. The surface of the straightedge (1) is provided with an arc-shaped sliding groove (2). The movable ruler (3) has a perforation (4) on its surface. A sliding positioning element is provided in the perforation (4). The sliding positioning element passes through the slide groove (2) and can slide along the slide groove (2). The surfaces of the straightedge (1) and the movable ruler (3) are both provided with scales.
2. The annular movable angle measuring scale suitable for a ferrule structure according to claim 1, characterized in that, The movable ruler (3) has a semi-circular structure, and there are six perforations (4). The angle between the center of two adjacent perforations (4) and the center of the movable ruler (3) is 30°.
3. The annular movable angle measuring scale suitable for ferrule structures according to claim 1, characterized in that, The movable ruler (3) is provided with a relief groove (5) in the middle, and the relief groove (5) is provided in correspondence with the slot (6).
4. The annular movable angle measuring scale suitable for ferrule structures according to claim 3, characterized in that, The slot (6) is an isosceles trapezoid, the clearance slot (5) is a semicircle, and the angle of the upper base angle of the isosceles trapezoid is 120°.
5. The annular movable angle measuring scale suitable for ferrule structures according to claim 1, characterized in that, The sliding positioning component includes a bolt and a nut. The bolt passes through the groove (2) and the through hole (4), and the nut is threadedly connected to the bolt.
6. The annular movable angle measuring scale suitable for ferrule structures according to claim 5, characterized in that, The groove (2) is arranged to overlap with the center of the ruler (1), and the width of the groove (2) is the same as the diameter of the hole (4).
7. The annular movable angle measuring scale suitable for a ferrule structure according to any one of claims 1 to 6, characterized in that, Both the straightedge (1) and the movable ruler (3) are transparent.
8. The annular movable angle measuring scale suitable for a ferrule structure according to claim 7, characterized in that, The movable ruler (3) is provided with degree division lines.
9. An inspection and measurement tool, comprising a ring-shaped movable angle gauge suitable for a ferrule structure, characterized in that, The annular sliding angle measuring scale applicable to the ferrule structure is the annular sliding angle measuring scale applicable to the ferrule structure as described in any one of claims 1 to 8.