CN216278883U - Bolt looseness detection device - Google Patents
Bolt looseness detection device Download PDFInfo
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- CN216278883U CN216278883U CN202122784014.5U CN202122784014U CN216278883U CN 216278883 U CN216278883 U CN 216278883U CN 202122784014 U CN202122784014 U CN 202122784014U CN 216278883 U CN216278883 U CN 216278883U
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- annular pressure
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Abstract
The utility model discloses a bolt looseness detection device which comprises an annular pressure sensor, wherein a first elastic ring, a rigid ring and a second elastic ring for a bolt rod part to penetrate through are sequentially arranged on one side of the annular pressure sensor, and the rigid ring is detachably connected with the annular pressure sensor; the inner side of the annular pressure sensor is provided with a synchronizing part rotating around the axial lead of the annular pressure sensor, the synchronizing part is provided with a synchronizing port matched with the head of the rod part, and the synchronizing part is provided with a force transmission component abutted against the inner wall of the annular pressure sensor. Compared with the prior art, the bolt looseness detection device has the advantages that rigid contact between the head of the bolt and the rigid ring and between the rigid ring and the installation part is prevented through the first elastic ring and the second elastic ring, abrasion caused by installation is reduced, and the bolt looseness detection device is beneficial to increasing fastening acting force of the bolt through buffering deformation of the first elastic ring and the second elastic ring.
Description
Technical Field
The utility model relates to the technical field of bolt looseness detection, in particular to a bolt looseness detection device.
Background
The bolt is a fastener consisting of a head part and a screw rod, needs to be matched with a nut and is used for fastening and connecting two parts with through holes. Bolts are indispensable and play an extremely important role in industries such as industrial machinery, transportation, mining, energy and electrical equipment. However, the bolt is loosened due to vibration caused by mechanical movement, metal stress, external load, and the like, and accordingly, the bolt is broken.
In order to guarantee industrial equipment's normal steady operation, adopt bolt looseness sensor to carry out bolt looseness usually and detect, chinese utility model patent that bulletin number is CN207074096U discloses a strain type annular pressure sensor, including base, installation component with be used for to the atress pole of installation component application of force, installation component include outer ring, inner ring and annular intensity roof beam such as, the upper end of outer ring, the upper end of inner ring respectively with intensity roof beam's outer lane and inner circle be connected, the through-hole of inner ring and the through-hole of base are passed in proper order to the atress pole, outer ring and base butt install the foil gage on the intensity roof beam such as. The strain type annular pressure sensor is convenient to install, can directly measure the magnitude of a force value under the pushing of an electric cylinder or a lead screw, and can be widely applied to industrial bolt loosening detection.
However, in the above detection device, the bolt needs to have a certain length to pass through the mounting assembly through hole, the base through hole and the nut through hole, so that the sensor is only suitable for a longer bolt and is difficult to detect and apply to bolt looseness detection with a shorter length; in addition, when the sensor is used, the mounting assembly and the base and the mounting assembly and the bolt head are in rigid contact, and the mounting assembly and the base and the mounting assembly and the bolt head are abraded due to the fact that bolts need to be screwed in the mounting process.
Therefore, there is a need for an improved bolt loosening detection device in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a bolt looseness detecting device which is suitable for bolts with different lengths and reduces installation abrasion.
In order to realize the technical effects, the technical scheme of the utility model is as follows: a bolt looseness detection device comprises an annular pressure sensor, wherein a first elastic ring, a rigid ring and a second elastic ring for a bolt rod part to penetrate through are sequentially arranged on one side of the annular pressure sensor, and the rigid ring is detachably connected with the annular pressure sensor; the inner side of the annular pressure sensor is provided with a synchronizing part rotating around the axial lead of the annular pressure sensor, the synchronizing part is provided with a synchronizing port matched with the head of the rod part, and the synchronizing part is provided with a force transmission assembly abutted against the inner wall of the annular pressure sensor.
When the bolt looseness detection device in the technical scheme is installed, the rod part of the bolt sequentially penetrates through the first elastic ring, the rigid ring, the second elastic ring and the opening of the installation position, then the nut is screwed on the rod part of the bolt, so that the head of the bolt extrudes and fixes the rigid ring through the first elastic ring, and the rigid ring extrudes and acts on the installation position through the second elastic ring, so that elastic contact is formed between the head of the bolt and the rigid ring and between the rigid ring and the installation position, and abrasion caused by rigid contact extrusion is avoided; and then, sleeving a synchronous opening of the synchronous piece on the head part of the bolt, mounting the annular pressure sensor on the rigid ring, and fixing the position of the annular pressure sensor and ensuring that a force transmission assembly of the synchronous piece is abutted against the inner wall of the annular pressure sensor due to the fact that the rigid ring is extruded between the rod part of the bolt and the mounting part. So, when the bolt is not hard up the back, drive synchronous piece through the synchronization mouth and rotate, change the position that passes power subassembly for pass power subassembly effect in annular pressure sensor's different positions, thereby make annular pressure sensor can detect pressure signal's change, and then realized the not hard up detection function of bolt.
Preferably, the force transmission assembly comprises an opening arranged on the circumferential outer edge of the synchronizing part, a pressure spring arranged in the opening and a pressing part connected with the pressure spring, and the pressing part is abutted against the inner wall of the annular pressure sensor.
Through adopting above-mentioned technical scheme, act on the casting die through the pressure spring pressurized back that sets up in synchronizing part opening for casting die receives the thrust and acts on annular pressure sensor's inboard, and then makes things convenient for annular pressure sensor to detect whether the bolt is not hard up.
Preferably, the pressing member is spherical.
Through adopting above-mentioned technical scheme, after the casting die adopted globular, can reduce and the annular pressure sensor inner wall between wearing and tearing.
Preferably, the synchronizing member is a rotating ring, and the circumferential outer edge of the rotating ring is attached to the circumferential inner wall of the annular pressure sensor.
By adopting the technical scheme, the outer diameter of the synchronizing part is the same as the inner diameter of the annular pressure sensor, and the synchronizing part is ensured to rotate stably around the axial lead of the annular pressure sensor, so that the precision of bolt loosening signal detection is improved.
Preferably, the rigid ring is snap-fitted with the annular pressure sensor.
Through adopting above-mentioned technical scheme, realized that the rigidity is encircled and annular pressure sensor between quick detachable be connected, improved this detection device's installation effectiveness.
Preferably, a clamping interface is arranged on the annular pressure sensor, and a clamping block matched with the clamping interface in a clamping mode is arranged on the rigid ring.
Through adopting above-mentioned technical scheme, realized that the joint between annular pressure sensor and the rigidity ring is connected, made things convenient for annular pressure sensor to install fast and arrange in on the rigidity ring.
Preferably, the sum of the thicknesses of the first elastic ring, the rigid ring and the second elastic ring is smaller than the thickness of the annular pressure sensor.
Through adopting above-mentioned technical scheme, reduced the bolt pole portion be located first elastic ring, rigid ring and second elastic ring inboard length after to reduced the requirement to bolt pole portion length, made detection device can be applicable to the not hard up detection of bolt of multiple length.
Preferably, a limiting part is arranged on the inner wall of the annular pressure sensor, and the limiting part is arranged on one side, away from the rigid ring, of the force transmission assembly.
Through adopting above-mentioned technical scheme, guarantee that the synchronizing part can rotate in annular pressure sensor's inboard, prevent that it from dropping from the bolt head, lead to unable detection bolt not hard up signal.
Preferably, the limiting part is a limiting cover, and the limiting cover covers the through hole of the annular pressure sensor.
Through adopting above-mentioned technical scheme, utilize the locating part can seal ring pressure sensor's through-hole, keep apart the protection bolt, prevent that steam and bolt contact from taking place the corrosion, reduce the bolt and receive external environment's influence, guarantee the life of bolt under adverse circumstances.
Preferably, the first elastic ring and the second elastic ring are both rubber rings.
Through adopting above-mentioned technical scheme, on guaranteeing that first elastic ring and second elastic ring have elastic basis, utilize the extensive material low price's in rubber source characteristics, reduced this bolt looseness detection device's cost.
In summary, compared with the prior art, the bolt looseness detection device provided by the utility model has the advantages that the first elastic ring and the second elastic ring are respectively used for preventing the bolt head from being in rigid contact with the rigid ring and preventing the rigid ring from being in rigid contact with the installation part, so that the abrasion generated by installation is reduced, and the first elastic ring and the second elastic ring are used for buffering deformation, so that the fastening acting force of the bolt is increased.
Drawings
FIG. 1 is a state diagram of use of embodiment 1;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is an exploded schematic view of FIG. 1;
FIG. 6 is an enlarged view of portion B of FIG. 5;
FIG. 7 is a schematic view showing the structure of an annular pressure sensor according to embodiment 2
In the figure: 1. the pressure sensor comprises an annular pressure sensor, 1-1 parts of clamping ports, 2 parts of first elastic rings, 3 parts of rigid rings, 4 parts of second elastic rings, 5 parts of synchronizing pieces, 5-1 parts of synchronizing ports, 6 parts of force transmission assemblies, 6a parts of openings, 6b parts of pressure springs, 6c parts of pressing pieces, 7 parts of clamping blocks, 8 parts of limiting pieces, 9 parts of bolts, 9a parts of heads, 9b parts of rods, 10 parts of nuts and 11 parts of fixing plates.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1 to 6, the bolt looseness detection device of embodiment 1 includes an annular pressure sensor 1, wherein a first elastic ring 2, a rigid ring 3 and a second elastic ring 4 for a rod portion 9b of a bolt 9 to penetrate through are sequentially arranged on one side of the annular pressure sensor 1, and the rigid ring 3 is detachably connected with the annular pressure sensor 1; the inner side of the annular pressure sensor 1 is provided with a synchronous part 5 rotating around the axial lead of the annular pressure sensor, the synchronous part 5 is provided with a synchronous port 5-1 matched with the head part 9a of the rod part 9b, and the synchronous part 5 is provided with a force transmission assembly 6 abutted against the inner wall of the annular pressure sensor 1.
When the bolt looseness detection device is used, the second elastic ring 4, the rigid ring 3 and the first elastic ring 2 are sequentially laid on the fixing plate 11, the through holes of the second elastic ring 4, the rigid ring 3 and the first elastic ring 2 are aligned with the through holes 11 on the fixing plate 11, as shown in fig. 1 and 6, the rod part 9b of the bolt 9 sequentially penetrates through the first elastic ring 2, the rigid ring 3, the second elastic ring 4 and the fixing plate 11, the nut 10 is screwed at the end part of the rod part 9b of the bolt 9, the head part 9a of the bolt 9 extrudes the rigid ring 3 through the first elastic ring 2, the rigid ring 3 extrudes the fixing plate 11 through the second elastic ring 4, the rigid ring 3 is fixed between the head part 9a of the bolt 9 and the fixing plate 10 under the clamping and matching action of the head part 9a of the bolt 9 and the nut 10, then the synchronous port 5-1 of the synchronous piece 5 is sleeved on the head part 9a of the bolt 9, and then the annular pressure sensor 1 is installed on the rigid ring 3, and finishing the installation. When the bolt 9 is loosened, the head part 9a and the rod part 9b of the bolt rotate, the head part 9a drives the synchronizing part 5 to rotate, the position of the force transmission component 6 is changed, the pressure position of the force transmission component 6 acting on the annular pressure sensor 1 is changed, the annular pressure sensor 1 can detect the change of a pressure signal, and then the bolt loosening signal is obtained. Compared with the prior art in which the head 9a of the bolt 9 is in rigid contact with the fixing plate 11 directly through the annular pressure sensor 1, in this embodiment, the elastic contact between the head 9a of the bolt 9 and the rigid ring 3 and between the rigid ring 3 and the fixing plate 11 is realized through the first elastic ring 2 and the second elastic ring 4, so that the buffering is realized, the abrasion in the installation process is avoided, and meanwhile, the elastic deformation can occur after the first elastic ring 2 and the second elastic ring 4 are pressed during the installation, thereby being beneficial to the position fixing of the bolt 1 on the fixing plate 11.
As shown in fig. 4 and 6, the synchronizing member 5 is a rotating ring, the circumferential outer edge of the rotating ring is attached to the circumferential inner wall of the annular pressure sensor 1, and the through hole at the center of the synchronizing member 5 is hexagonal prism-shaped and is adapted to the head 9a of the bolt 9; the force transmission assemblies 6 are three in number and are uniformly distributed on the circumference taking the axial lead of the synchronous piece 5 as the center; the force transmission assembly 6 comprises an opening 6a arranged on the circumferential outer edge of the synchronizing piece 5, a pressure spring 6b arranged in the opening 6a and a pressing piece 6c connected with the pressure spring 6b, and the pressing piece 6c is abutted against the inner wall of the annular pressure sensor 1; the pressing member 6c is spherical.
The synchronizer 5 adopts a rotating ring, after the circumferential outer edge of the synchronizer is attached to the circumferential inner wall of the annular pressure sensor 1, the synchronizer 5 is ensured to stably rotate by taking the axial lead of the annular pressure sensor 1 as a central line, a through hole at the central position of the synchronizer 5 is a synchronization port 5-1, the synchronization port 5-1 is in a regular hexagonal prism shape matched with the head part 9a of the bolt 9, and the synchronizer 5 can synchronously rotate after the bolt 9 is loosened. In the force transmission assembly 6, the pressure spring 6b in the opening 6a acts on the pressure applying piece 6c, so that the pressure applying piece 6c abuts against the inner wall of the annular pressure sensor 1, and after the synchronizing piece 5 loosens along with the bolt 1, the pressure applying position of the pressure applying piece 6c on the annular pressure sensor 1 changes, so that the signal received by the annular pressure sensor 1 changes, and the bolt 9 can be determined to be loosened. The pressing piece 6c is spherical, so that the annular pressure sensor 1 is conveniently installed on the rigid ring 3, and then the synchronizing piece 5 is inserted between the head 9a of the bolt 9 and the annular pressure sensor 1, so that the circumferential inner wall of the annular pressure sensor 1 is attached to the circumferential outer edge of the synchronizing piece 5, and meanwhile, the circumferential outer edge of the head 9a of the bolt 9 is attached to the circumferential inner wall of the synchronizing piece 5.
As shown in fig. 3-5, the rigid ring 3 is snap-fitted to the annular pressure sensor 1; the sensor 1 is provided with a clamping interface 1-1, the rigid ring 3 is provided with a clamping block 7 which is clamped and matched with the clamping interface 1-1, and the thickness of the first elastic ring 2, the rigid ring 3 and the second elastic ring 3 is smaller than that of the annular pressure sensor 1; a limiting piece 8 is arranged on the inner wall of the annular pressure sensor 1, and the limiting piece 8 is arranged on one side, far away from the rigid ring 3, of the force transmission assembly 6; the first elastic ring 2 and the second elastic ring 4 are both rubber rings.
After the rigid ring 3 is locked between the head part 9a and the fixing plate 11 through the bolt 9, aligning a clamping interface 1-1 on the annular pressure sensor 1 with a clamping block 7 on the rigid ring 3, moving the annular pressure sensor 1 towards the rigid ring 3, and clamping the clamping block 7 into the clamping interface 1-1, so that the rapid and convenient installation of the annular pressure sensor 1 is completed; after the installation, the limiting piece 8 on the inner wall of the annular pressure sensor 1 can automatically limit the synchronous piece 6 to prevent the synchronous piece from separating from the head 9a of the bolt 9; first elastic ring 2 and second elastic ring 4 are the rubber ring, guarantee that the two has elastic while, reduction equipment manufacturing cost. And the thickness of the first elastic ring 2, the rigid ring 3 and the second elastic ring 3 is less than that of the annular pressure sensor 1, so that the requirement of the detection device on the length of the rod part 9b of the bolt 9 can be reduced, and during installation, the rod part 9b of the bolt 9 can only be ensured to penetrate through the first elastic ring 2, the rigid ring 3, the second elastic ring 4, the fixing plate 11 and the nut 9, so that the detection device is suitable for bolts 9 with different lengths.
Example 2
As shown in fig. 6, the bolt looseness detection device of embodiment 2 is different from embodiment 1 in that the stopper 8 is a stopper cover that covers the through hole of the annular pressure sensor 1. Utilize locating part 8 to carry out spacing in synchronizing part 5, can also cooperate annular pressure sensor 1 to keep apart the protection to synchronizing part 5 and the inboard bolt 9 of synchronizing part 5, prevent to receive the interference influence of outside steam and other factors, delay the ageing speed of corrosion, reduce not hard up possibility, prolong life cycle.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a bolt looseness detection device, includes annular pressure sensor (1), its characterized in that:
a first elastic ring (2), a rigid ring (3) and a second elastic ring (4) for a bolt (9) to penetrate through are sequentially arranged on one side of the annular pressure sensor (1), and the rigid ring (3) is detachably connected with the annular pressure sensor (1); the inner side of the annular pressure sensor (1) is provided with a synchronizing part (5) rotating around the axis line of the annular pressure sensor, a synchronizing port (5-1) matched with the head (9 a) of the rod part (9 b) is arranged on the synchronizing part (5), and a force transmission assembly (6) abutted to the inner wall of the annular pressure sensor (1) is arranged on the synchronizing part (5).
2. The bolt looseness detecting device according to claim 1, wherein: the force transmission assembly (6) comprises an opening (6 a) arranged on the circumferential outer edge of the synchronizing piece (5), a pressure spring (6 b) arranged in the opening (6 a) and a pressing piece (6 c) connected with the pressure spring (6 b), and the pressing piece (6 c) is abutted against the inner wall of the annular pressure sensor (1).
3. The bolt looseness detecting device according to claim 2, wherein: the pressing piece (6 c) is spherical.
4. The bolt looseness detecting device according to claim 1, wherein: the synchronous piece (5) is a rotating ring, and the circumferential outer edge of the rotating ring is attached to the circumferential inner wall of the annular pressure sensor (1).
5. The bolt looseness detecting device according to claim 1, wherein: the rigid ring (3) is in clamping fit with the annular pressure sensor (1).
6. The bolt looseness detecting device according to claim 5, wherein: the annular pressure sensor (1) is provided with a clamping interface (1-1), and the rigid ring (3) is provided with a clamping block (7) which is matched with the clamping interface (1-1) in a clamping manner.
7. The bolt looseness detecting device according to claim 1, wherein: the sum of the thicknesses of the first elastic ring (2), the rigid ring (3) and the second elastic ring (4) is smaller than the thickness of the annular pressure sensor (1).
8. The bolt looseness detecting device according to claim 1, wherein: the annular pressure sensor is characterized in that a limiting part (8) is arranged on the inner wall of the annular pressure sensor (1), and the limiting part (8) is arranged on one side, away from the rigid ring (3), of the force transmission assembly (6).
9. The bolt looseness detection device of claim 8, wherein: the limiting part (8) is a limiting cover, and the limiting cover covers the through hole of the annular pressure sensor (1).
10. The bolt looseness detecting device according to claim 1, wherein: the first elastic ring (2) and the second elastic ring (4) are both rubber rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122784014.5U CN216278883U (en) | 2021-11-12 | 2021-11-12 | Bolt looseness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122784014.5U CN216278883U (en) | 2021-11-12 | 2021-11-12 | Bolt looseness detection device |
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| Publication Number | Publication Date |
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| CN216278883U true CN216278883U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122784014.5U Active CN216278883U (en) | 2021-11-12 | 2021-11-12 | Bolt looseness detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825034A (en) * | 2024-03-04 | 2024-04-05 | 山东明辰质量检测有限公司 | Bolt tightness detection device and method |
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2021
- 2021-11-12 CN CN202122784014.5U patent/CN216278883U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825034A (en) * | 2024-03-04 | 2024-04-05 | 山东明辰质量检测有限公司 | Bolt tightness detection device and method |
| CN117825034B (en) * | 2024-03-04 | 2024-05-10 | 山东明辰质量检测有限公司 | Bolt tightness detection device and method |
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