Color-changing bolt convenient for unmanned inspection

Abstract

The color-changing bolt convenient for unmanned inspection comprises a bolt body, and a mounting hole communicated with a nut and a screw rod is formed in the bolt body; the composite cover plate is provided with a visual display area and an identification code; one end, close to the nut, of the display part is not in contact with the inner wall of the mounting hole in the nut, the other end of the display part is fixedly connected with the mounting hole in the screw, and the display part is in a first color; the mounting hole is filled with the composite solution, and the composite solution has a second color different from the first color; when the nut body is in a free state, the visual display area displays a first color; when the nut body is in a tightening state, the visual display area displays a second color; when the bolt body is in a loose state, the visual display area displays a mixed color of the first color and the second color. According to the utility model, the tightness degree of the bolt can be intuitively judged by observing the color of the bolt, the bolt does not need to be detected manually, and the detection efficiency and convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field especially relates to a color change bolt convenient for unmanned inspection. BACKGROUND

[0002] Bolt is a kind of fastener including nut and screw rod, in some facilities and equipment, the connecting mode of each component is bolt connection.

[0003] In the component connecting position of iron tower, bolt is also needed to be used to fasten and connect, under long time use, the thread on bolt can occur plastic deformation and lead to relaxation, further lead to bolt loosening, and one bolt loosening can possibly lead to the connection of entire node to fail, thereby causing major accident, so the degree of tightness of bolt on iron tower needs to be detected regularly;Under traditional condition, the pre-tightening condition of bolt needs to be detected by artificial through torque wrench, but artificial detection efficiency is low, and the height of iron tower is higher, and the number of bolt used is huge, more inconvenient for detecting bolt on iron tower, detection cost is higher, time consumption is longer, and efficiency is lower;Therefore, in order to solve the above problems, the application provides a color change bolt convenient for unmanned inspection. SUMMARY

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a color change bolt convenient for unmanned inspection, the degree of tightness of bolt can be directly judged by observing the color of bolt, without manually detecting bolt by artificial, to improve detection efficiency and convenience.

[0005] The utility model provides a color change bolt convenient for unmanned inspection, which comprises:

[0006] A bolt body comprising a nut and a screw rod, the nut and the screw rod are of an integral structure, and the bolt body has an installation hole with an opening outwardly arranged and communicating with the nut and the screw rod;

[0007] A composite cover plate is sealingly arranged at the opening and has a visual display area and an identification code arranged thereon;

[0008] A color developing piece is arranged in the installation hole, one end of the color developing piece close to the nut is not in contact with the inner wall of the installation hole in the nut, and the other end of the color developing piece is fixedly connected with the installation hole in the screw rod, and the one end of the color developing piece close to the nut is of a first color towards the visual display area;

[0009] A composite solution fills the installation hole, and the composite solution has a second color different from the first color;

[0010] When the bolt body is in a free state, the color developing piece is closely attached to the composite cover plate, and the visual display area displays the first color;

[0011] When the bolt body is in the tightened state, the maximum distance exists between the color-developing piece and the composite cover plate, the composite solution flows between the color-developing piece and the composite cover plate, and the visual display area displays the second color;

[0012] When the bolt body is in the loosened state between the free state and the tightened state, the distance between the color-developing piece and the composite cover plate is reduced, the composite solution flows between the color-developing piece and the composite cover plate, and the visual display area displays the mixed color of the first color and the second color.

[0013] Further, in the plane perpendicular to the axis of the screw rod, the projection area of the color-developing piece on the side towards the visual display area is greater than or equal to the projection area of the visual display area.

[0014] Further, the mounting hole comprises a first hole and a second hole, the first hole is arranged in the nut, the second hole is arranged in the screw rod, the first hole and the second hole are communicated, one end of the color-developing piece away from the visual display area is fixedly arranged in the second hole, and a gap exists between the side wall of the other end and the side wall of the first hole.

[0015] Further, the color-developing piece comprises a pull rod, a reflecting plate and a reflecting cover, the pull rod is fixedly connected in the second hole, the reflecting plate is fixedly connected with the top of the pull rod, the reflecting cover is fixedly connected with the top of the reflecting plate, and the top of the reflecting plate is of the first color.

[0016] Further, the pull rod comprises a head and a rod body, in the plane perpendicular to the axis of the rod body, the projection area of the head is greater than the projection area of the rod body.

[0017] Further, an elastic washer is further arranged, the elastic washer is fixedly arranged in the first hole and is slidably arranged outside the rod body.

[0018] Further, the composite cover plate comprises a transparent top cover and a metal washer, the transparent top cover is sealingly arranged at the opening, a reserved hole is arranged in the transparent top cover and communicated with the first hole, and the metal washer is fixedly arranged at the top of the transparent top cover, and the top of the metal washer is provided with the identification code.

[0019] Further, the reflecting cover and the transparent top cover are both made of transparent acrylic plate.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] The utility model discloses a bolt includes bolt body, composite cover, color developing piece and composite solution, color developing piece has first color, and composite solution is second color, and first color is not same with second color, when the bolt is in free state, visual display area shows first color, when the bolt is in the tightening state, visual display area shows second color, when the bolt is in the loose state between free state and tightening state, visual display area shows the mixture of first color and second color, and the color that visual display area shows is more inclined to first color when the bolt loose state is closer to free state, can intuitively, accurately judge the tightness degree of bolt through the color of visual display area, thereby judges whether the bolt is loose, relative to artificial manual detection, improve the efficiency and convenience of detection, and the composite cover still is provided with identification code on, and the position of loose bolt can be quickly mastered through identification code, and the accuracy of detection is further improved.

[0022] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model. Other features of the utility model will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects and advantages of the utility model will become more apparent through reading the detailed description of the non-limiting embodiments made by referring to the following drawings:

[0024] Figure 1 It is the perspective view of the utility model;

[0025] Figure 2 It is the sectional view of the utility model;

[0026] Figure 3 It is the structure schematic drawing when the utility model cooperates with nut;

[0027] Figure 4 It is the partial sectional view of the utility model under the tightening state;

[0028] Figure 5 It is the partial sectional view of the utility model under the loose state;

[0029] Figure 6 It is the structure schematic drawing of transparent top cover and metal gasket of the utility model;

[0030] Marked number in drawing: 1, bolt body, 2, composite cover, 3, color developing piece, 4, composite solution, 5, elastic washer, 6, nut, 7, equipment;

[0031] 11, nut, 12, screw rod, 13, mounting hole;

[0032] 21, top cover; 22, metal gasket;

[0033] 31, pull rod; 32, reflector; 33, reflector cover;

[0034] 131, first hole; 132, second hole. DETAILED DESCRIPTION

[0035] The utility model will be further explained in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description.

[0036] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] Please refer to Figures 1-6 The embodiment of the utility model provides a color-changing bolt convenient for unmanned inspection, which comprises a bolt body 1, a composite cover plate 2, a color-developing piece 3 and a composite solution 4. The bolt body 1 comprises a nut 11 and a screw rod 12, the nut 11 and the screw rod 12 are of an integrated structure, and the bolt body 1 has a mounting hole 13 with an outward opening and communicating with the nut 11 and the screw rod 12.

[0038] The composite cover plate 2 is sealingly arranged at the top opening of the bolt body 1, and the composite cover plate 2 is provided with a visual display area and an identification code. The visual display area is made of transparent material and can directly display the color in the mounting hole.

[0039] The color-developing piece 3 is arranged in the mounting hole 13, one end of the color-developing piece 3 close to the nut 11 is not in contact with the inner wall of the mounting hole 13 in the nut 11, and the other end is fixedly connected to the mounting hole in the screw rod 12. The end of the color-developing piece 3 close to the nut 11 is of a first color towards the visual display area.

[0040] The composite solution 4 fills the mounting hole 13, and the composite solution 4 has a second color different from the first color.

[0041] When the bolt body 1 is in a free state, the color-developing piece 3 is tightly attached to the composite cover plate 2, and the visual display area displays the first color.

[0042] When the bolt body 1 is in a tightened state, there is a maximum distance between the color-developing piece 3 and the composite cover plate 2, the composite solution 4 flows between the color-developing piece 3 and the composite cover plate 2, and the visual display area displays the second color.

[0043] When the bolt body 1 is in a loose state between a free state and a tightened state, the gap between the color display element 3 and the composite cover plate 2 decreases, and the composite solution 4 flows between the color display element 3 and the composite cover plate 2, so that the visual display area displays a mixture of the first color and the second color.

[0044] Specifically, during the assembly of the bolt body 1, the color-displaying element 3 and the composite cover plate 2 are tightly fitted together. That is, when the bolt body 1 is in a free state, the color-displaying element 3 and the composite cover plate 2 are tightly fitted together. When the bolt body 1 is in a free state, there is no axial force on the bolt body 1, and the color-displaying element 3 and the composite cover plate 2 remain tightly fitted, thus allowing the visual display area to display the first color. During the transition from the free state to the tightened state, the bolt 12 bears axial tensile force, such as... Figure 3 As shown, when the bolt body 1 and nut 6 tighten the equipment 7, the axial tensile force F on the screw 12 is downward, and the screw 12 undergoes a certain elastic deformation in the axial direction. This elastic deformation of the screw 12 causes the color developing element 3 to undergo downward axial displacement, creating a gap between the color developing element 3 and the composite cover plate. The composite solution 4 flows into the space between the color developing element 3 and the composite cover plate 2, causing the visual display area to display a mixture of the first and second colors. The tighter the screw body 1 is tightened, the greater the axial tensile force on the screw 12. The larger the distance between the color-developing component 3 and the composite cover plate 2, the thicker the composite solution 4 between the color-developing component 3 and the composite cover plate 2, and the closer the color displayed in the visual display area is to the second color. When the bolt body 1 is fully pre-tightened, the distance between the color-developing component 3 and the composite cover plate 2 reaches its maximum, and the visual display area displays the second color. It can be seen that the change in the pre-tightening degree of the bolt body 1 will correspondingly change the axial tensile force value borne by the screw 12, thereby changing the color displayed in the visual color-developing area and realizing the color change of the bolt.

[0045] The above describes the color changes during the bolt tightening process. When the bolt becomes loose, the color-developing element 3 shifts towards the composite cover plate 2 (upwards), reducing the distance between the color-developing element 3 and the composite cover plate 2, thus decreasing the thickness of the composite solution. Consequently, the second color weakens, and the first color deepens. The visual display area shows a mixture of the first and second colors. The lower the pre-tightening degree of the bolt, the closer the color displayed in the visual display area is to the first color. Therefore, by observing the color displayed in the visual display area, the tightness of the bolt body 1 can be intuitively judged, thereby determining whether the bolt has become loose. Compared to manual inspection, this improves the efficiency and convenience of the inspection. Furthermore, the composite cover plate 2 is equipped with an identification code, which allows for quick identification of the location of the loose bolt, further improving the accuracy of the inspection.

[0046] Specifically, the first color includes but is not limited to red, and the second color includes but is not limited to black, and the color difference between red and black is large, which facilitates more clearly judging the tightness of the bolt;

[0047] The composite solution 4 is composed of pure water, ethylene glycol and carbon-free ink, and by changing the proportion of pure water, ethylene glycol and carbon-free ink, the use temperature range of the composite solution 4 can be adjusted, so that it can be set and produced according to different environments, and the use range is wider.

[0048] The application is also equipped with an unmanned aerial vehicle inspection function, an image acquisition device is installed on the unmanned aerial vehicle, the flight track of the unmanned aerial vehicle is set, the bolt mounting position on the tower is photographed by the image acquisition device, so as to obtain the image of the bolt, the image acquisition device is connected with the detection system installed on the computer, a comparison color card is arranged in the detection system, and a plurality of colors are arranged one by one on the comparison color card according to the pretightening force, each pretightening degree corresponds to one color, the bolt pretightening force is 0%, the display is bright red; the bolt pretightening force is 50%, the display is red; the bolt pretightening force is 70%, the display is dark red; the bolt pretightening force is 90%, the display is dark red; the bolt pretightening force is 100%, the display is completely black; the image is automatically uploaded to the detection system, the detection system can compare the color of the collected image with the color on the comparison color card, and then output the corresponding pretightening degree, so that whether the bolt is loose and the tightness degree can be directly judged; and the identification code on the composite cover plate 2 can accurately judge the bolt mounting position; the maintenance personnel can conveniently and timely tighten the bolt at the corresponding position to prevent major accidents.

[0049] In a preferred embodiment, as shown in Figure 4 In a preferred embodiment, as shown in

[0050] Specifically, in this way, the visual display area of the bolt body 1 is completely presented in the first color in the free state, and the second color is prevented from interfering with the color presented by the visual display area.

[0051] In a preferred embodiment, as shown in Figure 3 and 4 In a preferred embodiment, as shown in

[0052] Specifically, the first hole 131 is a stepped hole, and the hole diameter of the stepped hole decreases from top to bottom; the second hole 132 is a deep blind hole, and the hole diameter of the deep blind hole is smaller than the shortest hole diameter of the stepped hole;

[0053] When the bolt body 1 is pre-tightened, the screw rod 12 is subjected to a downward axial tension, the screw rod 12 is elastically deformed in the axial direction, and the color developing piece 3 fixedly arranged in the screw rod 12 is driven to move downward in the axial direction, so that a gap is formed between the color developing piece 3 and the composite cover plate 2 on the nut 11. The greater the pre-tightening force is, the greater the axial tension of the screw rod 12 is, the greater the axial displacement of the color developing piece 3 is, and the greater the gap between the color developing piece and the composite cover plate 2 is.

[0054] In a preferred embodiment, as shown in Figure 2 and 4 , the color developing piece 3 comprises a pull rod 31, a light-reflecting plate 32 and a light-reflecting cover 33. The pull rod 31 is fixedly connected in the second hole 132. The light-reflecting plate 32 is fixedly connected to the top of the pull rod 31. The light-reflecting cover 33 is fixedly connected to the top of the light-reflecting plate 32. The top of the light-reflecting plate 32 is of a first color.

[0055] Specifically, the pull rod 31 is fixed in the second hole 132 by glue. The light-reflecting plate 32 and the light-reflecting cover 33 are fixed to the pull rod 31 and the light-reflecting plate 32 by glue. The fixing by glue is simpler and does not require a complex fixing structure or other fixing components.

[0056] Under natural light, the light-reflecting plate 32 can reflect the first color, and the light-reflecting cover 33 is transparent, so that the first color can be directly displayed.

[0057] In a preferred embodiment, as shown in Figure 2 , Figure 4 and Figure 5 , the pull rod 31 comprises a head and a rod body. In a plane perpendicular to the axis of the rod body, the head has a larger area of orthogonal projection than the rod body.

[0058] Preferably, the device further comprises an elastic washer 5, which is fixedly arranged in the first hole 131 and sleeved on the outside of the rod body.

[0059] Specifically, the elastic washer 5 is sleeved on the outside of the rod body of the pull rod 31, which can guide the upper end of the pull rod 31, so that the axis of the pull rod 31 is parallel to or coincides with the axis of the bolt body 1, thereby avoiding the inclination of the pull rod 31.

[0060] The elastic washer 5 is located below the head of the pull rod 31, and the head has a larger area of orthogonal projection than the rod body. When the bolt body 1 is pre-tightened, the head of the pull rod 31 presses the elastic washer 5 downward, and the elastic washer 5 is elastically deformed, so that the downward movement of the pull rod 31 is more stable.

[0061] The light-reflecting plate 32 is fixedly installed at the head of the pull rod 31, and the light-reflecting plate 32 is consistent with the shape and size of the head of the pull rod 31, so as to avoid the color of the rod body from affecting the color display of the light-reflecting plate 32 in the visual display area.

[0062] In a preferred embodiment, as shown in Figure 1 、 Figure 4 、 Figure 5 and Figure 6 indicated, the composite cover plate 2 comprises a transparent top cover 21 and a metal gasket 22, the transparent top cover 21 is sealingly arranged at the opening, and a reserved hole is formed in the transparent top cover 21 and communicates with the first hole 131; the metal gasket 22 is fixedly arranged at the top of the transparent top cover 21, and the top of the metal gasket 22 is provided with an identification code.

[0063] Specifically, two reserved holes are formed in the transparent top cover 21, and the positions of the two reserved holes are both relative to the first hole 131; when the bolt is assembled, the color-developing piece 3 and the sealing gasket 5 are first assembled in the mounting hole 13, then the transparent top cover 21 is fixed at the opening by glue, the transparent top cover 21 is tightly attached to the light-reflecting cover 33, and then the composite solution 4 equipped with the injection device and the hose is injected into the mounting hole 13 until the top surface of the composite solution 4 is flush with the top surface of the light-reflecting cover 33, the injection of the composite solution 4 is completed, and the setting of the reserved hole facilitates the injection of the composite solution 4;

[0064] After the injection is completed, the metal gasket 22 is fixed at the top of the transparent top cover 21 to seal the reserved hole, the metal gasket 22 is made of stainless steel, which facilitates the engraving of the identification code (not shown in the figure) on the metal gasket 22, and the setting of the identification code facilitates the accurate finding of the position of the loose bolt.

[0065] In a preferred embodiment, the light-reflecting cover 33 and the transparent top cover 21 are both made of transparent acrylic plates. The acrylic plate has good weather resistance, which can ensure the normal use of the material under strong light conditions outdoors; the acrylic plate has good light transmission, which can ensure the reflection of red light and does not affect the color developing effect; the acrylic plate has a very small linear expansion rate, which can ensure the normal use in a wide temperature range and will not be broken due to sharp temperature changes.

[0066] Working principle:

[0067] When the bolt is loose, the color-developing piece 3 is displaced towards the composite cover plate 2, the distance between the color-developing piece 3 and the composite cover plate 2 is reduced, the thickness of the composite solution is reduced, thereby the second color is weakened, the first color is deepened, the visual display area displays the mixed color of the first color and the second color, when the pre-tightening degree of the bolt is lower, the color displayed by the visual display area is closer to the first color; therefore, by observing the color displayed by the visual display area, the tightening degree of the bolt body 1 can be directly judged, thereby it is judged whether the bolt is loose, compared with manual detection, the efficiency and convenience of detection are improved; and the composite cover plate 2 is further provided with an identification code, through the identification code, the position of the loose bolt can be quickly mastered, and the accuracy of detection is further improved.

[0068] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] In the description of the present specification, the description of the terms "one embodiment", "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A color-changing bolt for facilitating unmanned inspection, characterized by, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

2. The color-changing bolt for unmanned inspection facilitation according to claim 1, characterized in that, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

3. The color-changing bolt for unmanned inspection facilitation according to claim 1, characterized in that, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

4. A colour changing bolt for facilitating unmanned inspection according to claim 3, wherein, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

5. A colour changing bolt for facilitating unmanned inspection according to claim 4, wherein, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

6. A colour changing bolt for facilitating unmanned inspection according to claim 5, wherein, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

7. A color-changing bolt for facilitating unmanned inspection according to claim 4, wherein The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution.

8. A colour changing bolt for facilitating unmanned inspection according to claim 7, wherein, The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. The utility model relates to a bolt body, composite cover plate, color developing piece and composite solution, and relates to a bolt body, composite cover plate, color developing piece and composite solution. 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