Limiting structure of bolt pre-tightening force sensor

Abstract

The utility model discloses and provides a limit structure of a bolt pretightening force sensor, which comprises a bolt, a sensor main body is movably arranged on the outer surface of the bolt, limit grooves are arranged at the upper end and the lower end of the sensor main body, limit rings are arranged on the inner walls of the limit grooves, and the outer surfaces of the limit rings are communicated with a plurality of groups of limit pipes. A plurality of sets of limiting pipes are arranged on the base, a round through groove is formed in one end of each limiting pipe, a spring is connected to the inner wall of each round through groove, a movable rod is connected to one end of each spring, and an arc-shaped clamping piece is connected to one end of each movable rod. According to the utility model, the plurality of groups of arc-shaped clamping pieces can be tightly clamped on the outer surface of the bolt, so that a limiting effect of clamping and centering is realized, the stability of the sensor main body on the bolt is ensured, and the measurement precision and reliability are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt sensor limiting, in particular to a limiting structure of a bolt pre-tightening force sensor. Background Art

[0002] In mechanical engineering, bolt preload sensors, as a key monitoring device, are widely used to monitor the condition of various fasteners. Their primary function is to measure and monitor the preload generated by bolts during the tightening process in real time to ensure the stability and safety of the connection. However, existing technical practices present challenges in their installation and use.

[0003] Bolt diameters vary widely, from small precision equipment to large, heavy machinery. Bolt specifications and sizes vary widely, creating significant challenges in the design and installation of bolt preload sensors. Conventional sensor designs often struggle to adapt to bolts of varying diameters, making it difficult to ensure the sensor is centered on the bolt during installation, impacting measurement accuracy and reliability. Utility Model Content

[0004] (1) Purpose of the utility model

[0005] In view of this, the purpose of the present invention is to provide a limiting structure for a bolt preload sensor, which solves the problems raised in the above background.

[0006] (2) Technical solution

[0007] A limiting structure for a bolt preload sensor comprises a bolt, a sensor body being movably mounted on the outer surface of the bolt, and limiting grooves being provided at both upper and lower ends of the sensor body, a limiting ring being installed on the inner wall of the upper limiting groove, and the outer surface of the limiting ring being connected to multiple groups of limiting tubes, a circular through groove being provided at one end of the multiple groups of limiting tubes, and a spring being connected to the inner wall of the circular through groove, one end of the spring being connected to a movable rod, and one end of the movable rod being connected to an arc-shaped clamping member.

[0008] Preferably, both upper and lower ends of the arc-shaped clamping member are arc-shaped.

[0009] Preferably, the outer surface of the arc-shaped clamping member is wrapped with rubber.

[0010] Preferably, a first pad and a second pad are movably mounted on the outer surface of the bolt, the first pad is located at the upper end of the sensor body, and the second pad is located at the lower end of the sensor body.

[0011] Preferably, a first snap ring and a second snap ring are connected to an outer surface of one side of the first pad.

[0012] Preferably, an abutment ring is connected to an outer surface of one side of the second pad.

[0013] Preferably, one side outer surface of the abutting ring is wrapped with rubber.

[0014] It can be seen from the above technical solutions that this application has the following beneficial effects:

[0015] 1. Through the elastic action of the spring, the movable rod of the utility model can be telescopically adjusted according to the diameter of the bolt, so that multiple sets of arc-shaped clamping parts can be tightly clamped on the outer surface of the bolt, achieving a clamping and limiting effect. This not only ensures the stability of the sensor body on the bolt, but also further improves the measurement accuracy and reliability.

[0016] 2. This utility model ensures that the sensor body is correctly and stably mounted on the bolt by sequentially inserting the first backing plate, the sensor body, and the second backing plate onto the outer surface of the bolt. This step not only avoids direct contact between the sensor body and the bolt or the surface of the contact object, thereby preventing measurement errors or damage caused by friction or collision, but also provides additional protection and support for the sensor body through the addition of the first and second backing plates, not only improving measurement accuracy and reliability, but also extending the service life of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the first pad structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second pad of the utility model;

[0021] Figure 5 For this utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0022] In the figure: 1. bolt; 2. sensor body; 3. first pad; 4. second pad; 211. limiting groove; 212. limiting ring; 213. limiting tube; 214. circular through groove; 215. spring; 216. movable rod; 217. arc-shaped clamping member; 311. first snap ring; 312. second snap ring; 411. abutting ring. DETAILED DESCRIPTION

[0023] The following description is merely illustrative in nature and is not intended to limit the present disclosure, its applications, or uses. It should be understood that throughout the drawings, identical or similar reference numerals indicate identical or similar parts and features. The drawings merely schematically illustrate the concepts and principles of the embodiments of the present disclosure and do not necessarily depict the specific dimensions and proportions of the various embodiments of the present disclosure. Certain portions of certain drawings may be exaggerated to illustrate relevant details or structures of the embodiments of the present disclosure.

[0024] See also Figure 1-5 , an embodiment provided by the utility model:

[0025] A limiting structure for a bolt preload force sensor includes a bolt 1, a sensor body 2 is movably mounted on the outer surface of the bolt 1, and limiting grooves 211 are provided at both the upper and lower ends of the sensor body 2, a limiting ring 212 is installed on the inner wall of the upper limiting groove 211, and the outer surface of the limiting ring 212 is connected to multiple groups of limiting tubes 213, one end of the multiple groups of limiting tubes 213 is provided with a circular through groove 214, and the inner wall of the circular through groove 214 is connected to a spring 215, one end of the spring 215 is connected to a movable rod 216, and one end of the movable rod 216 is connected to an arc-shaped clamping member 217.

[0026] Furthermore, both upper and lower ends of the arc-shaped clamping member 217 are in an arc shape, and the arc shape helps the arc-shaped clamping member 217 to better adapt to the outer surface of the bolt, thereby improving the stability and uniformity of clamping.

[0027] Furthermore, the outer surface of the arc-shaped clamping member 217 is wrapped with rubber, and the rubber material has good friction properties. When the arc-shaped clamping member 217 is clamped on the outer surface of the bolt 1, the rubber layer can increase the contact friction with the bolt surface, thereby ensuring that the clamping member is more firmly fixed on the bolt and is not easy to slip or loosen.

[0028] Furthermore, a first pad 3 and a second pad 4 are movably installed on the outer surface of the bolt 1. The first pad 3 is located at the upper end of the sensor body 2, and the second pad 4 is located at the lower end of the sensor body 2. By respectively installing the first pad 3 and the second pad 4 at the upper and lower ends of the sensor body 2, the sensor body 2 can be effectively prevented from directly rubbing or colliding with the top of the bolt 1 and the outer surface of the contact object, thereby protecting the sensor body 2 from damage and extending its service life.

[0029] Furthermore, a first snap ring 311 and a second snap ring 312 are connected to one outer surface of the first backing plate 3. The addition of the first snap ring 311 and the second snap ring 312 further secures the connection between the first backing plate 3 and the sensor body 2, thereby improving the overall robustness of the entire mounting structure. This helps ensure that the sensor body 2 maintains stable performance during long-term use and will not become loose or damaged due to vibration or external forces.

[0030] Furthermore, a locking ring 411 is connected to the outer surface of one side of the second pad 4. The locking ring 411 connected to the second pad 4 can be tightly locked with the lower part of the sensor body 2, thereby enhancing the stability and fixity between the second pad 4 and the sensor body 2 and the entire installation structure.

[0031] Furthermore, one side outer surface of the abutting ring 411 is wrapped with rubber, which can significantly increase the friction between it and the outer surface of the contact object, thereby enhancing the stability of the second pad 4 and the entire sensor installation structure.

[0032] Working Principle: First, insert the first backing plate 3, sensor body 2, and second backing plate 4 onto the outer surface of bolt 1. This step ensures that the sensor body 2 is properly installed on the bolt 1 and maintains a certain distance from the bolt 1 to avoid measurement errors or damage caused by direct contact.

[0033] Next, the bolt 1, along with the first backing plate 3 mounted thereon, the sensor body 2, and the second backing plate 4, are fastened to the outer surface of the object using nuts. The first backing plate 3 plays a crucial role in this process, effectively preventing the top outer surface of the sensor body 2 from directly contacting the top of the bolt 1, thereby protecting the sensor body 2 and ensuring measurement accuracy. Similarly, the second backing plate 4 prevents the bottom end of the sensor body 2 from directly contacting the outer surface of the object, further improving measurement stability and reliability.

[0034] During the installation process, the limiting structure inside the sensor body 2 begins to play a role. Due to the elastic action of the spring 215, the movable rod 216 can be telescopically adjusted according to the diameter of the bolt 1. In this way, multiple sets of arc-shaped clamping members 217 can be tightly clamped on the outer surface of the bolt 1, achieving a clamping and centered limiting effect. This design not only ensures the stability of the sensor body 2 on the bolt 1, but also improves the accuracy and reliability of the measurement. The first snap ring 311 and the second snap ring 312 on the first pad 3 are snapped with the top of the limiting ring 212 at the upper end of the sensor body 2, further fixing the position of the sensor body 2. At the same time, the abutment ring 411 on the second pad 4 is snapped with the bottom end of the sensor body 2, providing additional support and fixation for the sensor body 2, thereby enhancing the stability and firmness of the sensor body 2 on the bolt 1.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A limiting structure for a bolt preload force sensor, comprising a bolt (1), characterized in that: A sensor body (2) is movably mounted on the outer surface of the bolt (1), and a limiting groove (211) is provided at both the upper and lower ends of the sensor body (2), a limiting ring (212) is installed on the inner wall of the upper limiting groove (211), and the outer surface of the limiting ring (212) is connected to multiple groups of limiting tubes (213), one end of the multiple groups of limiting tubes (213) is provided with a circular through groove (214), and the inner wall of the circular through groove (214) is connected to a spring (215), one end of the spring (215) is connected to a movable rod (216), and one end of the movable rod (216) is connected to an arc-shaped clamping member (217).

2. The limiting structure of a bolt preload force sensor according to claim 1, characterized in that: The upper and lower ends of the arc-shaped clamping member (217) are both arc-shaped.

3. The limiting structure of a bolt preload sensor according to claim 1, characterized in that: The outer surface of the arc-shaped clamping member (217) is wrapped with rubber.

4. The limiting structure of a bolt preload force sensor according to claim 1, characterized in that: A first pad (3) and a second pad (4) are movably mounted on the outer surface of the bolt (1); the first pad (3) is located at the upper end of the sensor body (2), and the second pad (4) is located at the lower end of the sensor body (2).

5. The limiting structure of a bolt preload force sensor according to claim 4, characterized in that: A first clamping ring (311) and a second clamping ring (312) are connected to an outer surface of one side of the first pad (3).

6. The limiting structure of a bolt preload sensor according to claim 4, characterized in that: An abutment ring (411) is connected to an outer surface of one side of the second pad (4).

7. The limiting structure of a bolt preload force sensor according to claim 6, characterized in that: One side outer surface of the abutment ring (411) is wrapped with rubber.

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