Chromogenic observation anti-loose warning screw

Abstract

The invention discloses a color developing observation anti-loosening warning screw which comprises a screw base body, a polyurethane piston type color developing elastic column, an integrated glass inlaid metal cap and a flowing color developing liquid center sealing chamber. One end of the polyurethane piston type developing elastic column is fixedly connected with the bottom of the blind hole in the center of the screw base body; the integrated glass inlaid metal cap is formed by combining a brass metal round cap and a glass wafer, and the whole integrated glass inlaid metal cap is inlaid in the screw head of the screw base body and can serve as a window for observing color changes. The flowing developing liquid center sealing chamber is designed into a circular revolving body, the revolving center coincides with the center of the screw base body, and the flowing developing liquid center sealing chamber is fixed in the screw base body; and the central through hole of the flowing developing liquid central sealing chamber is matched with the polyurethane piston type developing elastic column to form a pipe wall-piston mechanism. According to the invention, the working state of the screw can be directly observed.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical monitoring devices, and in particular relates to a color display observation anti-loosening warning screw. Background Art

[0002] For the working status detection of fixing screws used on industrial equipment, the main detection methods are currently divided into: manual detection and special detection equipment. Manual detection is a huge workload, requires personal operating experience and proficiency, and the quality cannot be fully guaranteed; special detection equipment includes torque wrenches, screw strain gauge measurement devices, ultrasonic stress measurement devices, etc., which are relatively expensive and cannot be applied in narrow spaces, closed spaces and other application scenarios. Summary of the invention

[0003] In view of the above problems, the present invention proposes a color observation anti-loosening warning screw, which can replace manual work and has good detection quality and high detection efficiency. A new anti-loosening monitoring solution for screws. When the screw is in a normal working state, that is, fully tightened, through the transparent glass window of the screw head, it can be observed that the red color column is completely covered by the black color liquid, and the glass appears black; when the screw is in an under-working state, that is, not fully tightened, the central part of the red color column is not covered by the black color liquid, and the glass window is red in the inner circle and black in the outer circle. The larger the red area, the smaller the pre-tightening force on the screw; when the screw is in a non-working state, the glass window of the screw head appears completely red.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A color observation anti-loosening warning screw, comprising a screw base, a polyurethane piston color development elastic rod, an integrated glass-inlaid metal cap and a flowing color development liquid central sealing chamber;

[0006] The central axis of the screw base is provided with a cavity for accommodating the integrated glass-inlaid metal cap, the central sealing chamber for the flowing color developing liquid and the polyurethane piston-type color developing elastic rod in sequence from top to bottom;

[0007] The polyurethane piston color-developing elastic column coincides with the center of the screw base, and its bottom is fixedly connected to the bottom of the central blind hole of the screw base; a flowing color-developing liquid is provided between the top and the central sealing chamber of the flowing color-developing liquid;

[0008] The screw base is subjected to axial pre-tightening force to generate tensile deformation, driving the polyurethane piston-type color-developing elastic column to move along the axial direction of the screw base; during the movement, the color-developing liquid in the central sealing chamber of the flowing color-developing liquid is squeezed.

[0009] Furthermore, the integrated glass-inlaid metal cap is arranged above the central sealing chamber of the flowing color-developing liquid, and is used to observe whether there is color-developing liquid between the polyurethane piston-type color-developing elastic rod and the integrated glass-inlaid metal cap.

[0010] Furthermore, the integrated glass-inlaid metal cap includes a central observation glass window and a metal cap arranged outside the observation glass window. The bottom surface of the observation glass window can squeeze one end of the polyurethane piston-type color-developing elastic rod, and its top surface serves as an observation window.

[0011] Furthermore, the metal cap is provided with an exhaust hole, and the bottom thereof is provided with an end cover sealing groove.

[0012] Furthermore, the polyurethane piston color-developing elastic rod comprises, from top to bottom, an inverted cone-shaped body, a piston rod and a cylindrical end, the cylindrical end is fixedly connected to the bottom of the central blind hole of the screw base, and the inverted cone-shaped body is arranged in the central sealing chamber of the flowing color-developing liquid.

[0013] Furthermore, the inverted cone-shaped body and the piston rod are made of polyurethane.

[0014] Furthermore, the flowing color developing liquid central sealed chamber comprises a flowing color developing liquid central sealed chamber base, and the center of the color developing liquid central sealed chamber base is respectively provided with a color developing liquid storage chamber inner wall and a piston chamber inner wall;

[0015] The inner wall of the developer storage chamber is a central conical hole, which cooperates with the inverted conical body, and the inner wall of the piston chamber at the lower end cooperates with the piston rod.

[0016] Furthermore, the central sealing chamber base of the flowing color developing liquid is provided with two annular rectangular grooves at the top and the bottom for installing a sealing ring.

[0017] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0018] 1. The problem of complex tightness detection of screws used in industrial equipment has been solved. The new color-developing observation anti-loosening warning screw does not require other detection equipment and circuit systems. By observing the window of the color-developing liquid chamber, the tightness of a single screw can be roughly judged and handled accordingly;

[0019] 2. The overall structure of the new screw is compact and the cost is low. The internal structural principle can be applied to screws of different shapes and sizes to meet the industrial demand for various screws; 3. It can reduce manual labor, with good effect and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the assembly structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the integrated glass inlaid metal cap.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the central sealing chamber of the flowing color developing solution.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the polyurethane piston-type color-developing elastic column.

[0025] Figure 5 This is a partial cross-sectional structure diagram of the new screw under normal working conditions.

[0026] Figure 6 This is a partial cross-sectional structure diagram of the new screw under under-working condition.

[0027] Figure 7 This is a partial cross-sectional structure diagram of the new screw in a non-working state.

[0028] In the figure: 1-screw base; 2-polyurethane piston color-developing elastic column; 3-integrated glass-inlaid metal cap; 4-central sealing chamber for flowing color-developing liquid; 5-observation glass window; 6-end cover sealing groove; 7-exhaust through hole; 8-piston chamber inner wall; 9-color-developing liquid storage chamber inner wall; 10-annular rectangular groove; 11-screw through hole; 12-piston rod; 13-inverted cone-shaped special-shaped body; 14-cylindrical end. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the description of the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0032] Example 1

[0033] like Figure 1 As shown, the present invention provides a color observation anti-loosening warning screw, which includes a screw base 1, a polyurethane piston-type color development elastic column 2 and an integrated glass-inlaid metal cap 3.

[0034] In the above-mentioned color observation anti-loosening warning screw, the screw base 1 is M30X2.

[0035] The screw base 1 is provided with a cavity for accommodating the integrated glass-inlaid metal cap, a central sealing chamber for the flowing color developing liquid, and a polyurethane piston-type color developing elastic column in sequence from top to bottom in the central axis direction;

[0036] The polyurethane piston color-developing elastic column 2 coincides with the center of the screw base 1, and its bottom is fixedly connected to the bottom of the central blind hole of the screw base 1; a flowing color-developing liquid is provided between the top and the central sealing chamber 4 of the flowing color-developing liquid;

[0037] The screw base 1 is subjected to an axial pre-tightening force to generate tensile deformation, driving the polyurethane piston-type color-developing elastic column 2 to move along the axial direction of the screw base; during the movement, the color-developing liquid in the central sealing chamber 4 of the flowing color-developing liquid is squeezed.

[0038] In this embodiment, the integrated glass-inlaid metal cap 3 is arranged above the central sealing chamber 4 of the flowing color-developing liquid, and is used to observe whether there is color-developing liquid between the polyurethane piston color-developing elastic column 2 and the integrated glass-inlaid metal cap 3 .

[0039] Example 2

[0040] like Figure 2-4 As shown, in this embodiment, the polyurethane piston color-developing elastic column 2 includes an inverted cone-shaped body 13, a piston rod 12 and a cylindrical end 14 from top to bottom, the cylindrical end 14 is fixedly connected to the bottom of the central blind hole of the screw base 1, and the cylindrical end 14 is fixedly connected to the bottom of the central blind hole of the M30X2 screw base 1. The middle is the piston rod 12, which cooperates with the inner wall 8 of the piston of the central sealing chamber 4 of the color-developing liquid, and can make a straight short stroke movement along the M30X2 screw base 1. The other end is the inverted cone-shaped body 13, which is sealed in the inner wall 9 of the color-developing liquid chamber. It can make a short stroke straight line movement along the inner wall 8 of the piston of the central sealing chamber 4 of the flowing color-developing liquid. The inverted cone-shaped body and the piston rod are made of polyurethane.

[0041] In the above-mentioned color development observation anti-loosening warning screw, the integrated glass inlaid metal cap 3 is made of an observation glass window 5 inlaid in a brass metal round cap, and the whole is fixed to the head of the M30X2 screw base 1, which is used to seal the color development liquid storage chamber 9 and provide an observation window. Two exhaust holes 7 are opened on its surface to ensure the exhaust of the color development liquid storage chamber 9 during the installation process. An end cover sealing groove 6 is provided at the bottom of the brass metal round cap.

[0042] In the above-mentioned color observation anti-loosening warning screw, the central sealing chamber 4 of the flowing color developing liquid is designed as a disc-shaped rotating body, the central cylindrical hole of which is used as the inner wall 8 of the sealing piston chamber, and the central conical hole is used as the inner wall 9 of the color developing liquid storage chamber. Two annular rectangular grooves 10 are opened above and below, which can be used to install sealing rings, and two M3X0.5 screw through holes 11 are opened on the end face for the assembly and disassembly process of the whole screw.

[0043] In normal operation, Figure 5 As shown, the M30X2 screw base 1 is subjected to an axial pre-tightening force to produce a certain tensile deformation. During the deformation process, the polyurethane piston color-developing elastic column 2 is subjected to a traction force from the bottom and begins to move a short stroke along the inner wall 8 of the piston chamber. During the movement, the color-developing liquid in the central sealing chamber 4 of the flowing color-developing liquid will be squeezed to make it flow to the head of the inverted cone-shaped body 13. When the head of the inverted cone-shaped body 13 is completely separated from the observation glass window 5, the color-developing liquid covers the head of the inverted cone-shaped body 13. At this time, the color of the color-developing liquid can be observed from the outside through the observation glass window 5.

[0044] like Figure 6As shown, when the new screw is in an under-working state, that is, the screw is not fully pre-tightened, the polyurethane piston-type color-developing elastic column 2 moves a short stroke along the inner wall 8 of the piston chamber, but the moving distance is insufficient, resulting in the head of the inverted cone-shaped body 13 not being completely separated from the observation glass window 5, and the central area of ​​the head is still partially in contact with the observation glass window 5. At this time, from the outside through the observation glass window 5, it can be observed that the inner circle is the color of the surface of the polyurethane piston-type color-developing elastic column 2, and the outer circle is the color of the color-developing liquid itself. The smaller the pre-tightening force on the screw, the larger the color area on the surface of the central color-developing elastic column 2, which means that the state of the screw is more dangerous.

[0045] like Figure 7 As shown, when the new screw is in a non-working state, the polyurethane piston color-developing elastic column 2 is not subjected to traction from the bottom, the head of the inverted cone-shaped body 13 is in contact with the surface of the observation glass window 5, and the color-developing liquid is completely stored in the inner wall 9 of the color-developing liquid storage chamber. The color of the surface of the entire center polyurethane piston color-developing elastic column 2 can be observed through the observation glass window 5. In this embodiment, the center polyurethane piston color-developing elastic column 2 selects a color different from that of the color-developing liquid.

[0046] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A color observation anti-loosening warning screw, characterized in that: It includes a screw base, a polyurethane piston color-developing elastic rod, an integrated glass-inlaid metal cap and a central sealing chamber for a flowing color-developing liquid; The central axis of the screw base is provided with a cavity for accommodating the integrated glass-inlaid metal cap, the central sealing chamber for the flowing color developing liquid and the polyurethane piston-type color developing elastic rod in sequence from top to bottom; The polyurethane piston color-developing elastic column coincides with the center of the screw base, and its bottom is fixedly connected to the bottom of the central blind hole of the screw base; a flowing color-developing liquid is provided between the top and the central sealing chamber of the flowing color-developing liquid; The screw base is subjected to axial pre-tightening force to generate tensile deformation, driving the polyurethane piston-type color-developing elastic column to move along the axial direction of the screw base; during the movement, the color-developing liquid in the central sealing chamber of the flowing color-developing liquid is squeezed.

2. The color observation anti-loosening warning screw according to claim 1, characterized in that: The integrated glass-inlaid metal cap is arranged above the central sealing chamber of the flowing color-developing liquid, and is used to observe whether there is color-developing liquid between the polyurethane piston-type color-developing elastic rod and the integrated glass-inlaid metal cap.

3. The color observation anti-loosening warning screw according to claim 1, characterized in that: The integrated glass-inlaid metal cap comprises an observation glass window in the middle and a metal cap arranged outside the observation glass window. The bottom surface of the observation glass window can squeeze one end of the polyurethane piston color-developing elastic rod, and the top surface thereof serves as an observation window.

4. The color observation anti-loosening warning screw according to claim 3, characterized in that: The metal cap is provided with an exhaust hole, and the bottom thereof is provided with an end cover sealing groove.

5. The color observation anti-loosening warning screw according to claim 1, characterized in that: The polyurethane piston color-developing elastic rod comprises, from top to bottom, an inverted cone-shaped body, a piston rod and a cylindrical end, wherein the cylindrical end is fixedly connected to the bottom of the central blind hole of the screw base, and the inverted cone-shaped body is arranged in the central sealing chamber of the flowing color-developing liquid.

6. The color observation anti-loosening warning screw according to claim 5, characterized in that: The inverted cone-shaped body and the piston rod are made of polyurethane.

7. The color observation anti-loosening warning screw according to claim 5, characterized in that: The flowing color developing liquid central sealed chamber comprises a flowing color developing liquid central sealed chamber base, and the center of the color developing liquid central sealed chamber base is respectively provided with a color developing liquid storage room inner wall and a piston room inner wall; The inner wall of the developer storage chamber is a central conical hole, which cooperates with the inverted conical body, and the inner wall of the piston chamber at the lower end cooperates with the piston rod.

8. The color observation anti-loosening warning screw according to claim 7, characterized in that: The central sealing chamber base of the flowing color developing liquid is provided with two annular rectangular grooves at the top and the bottom for installing the sealing ring.

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