Flange connection fastener with cushioning structure

Abstract

The utility model relates to the field of fastener product structures, in particular to a flange connecting fastener with a cushioning structure, which comprises a bolt bar, a nut, a nested gasket and a middle gasket, one end of the bolt bar is a fixed end, and the other end of the bolt bar is a threaded end. The outer diameter of the bolt rod and the diameter of a middle through hole of the nested gasket and the diameter of a middle through hole of the middle gasket are arranged to have the diameter difference of a movable space with relative movable displacement, a positioning structure and a gasket centering structure are arranged on the nested gasket, an end centering structure is arranged on the fixed end, and a nut centering structure is arranged on the nut. Gasket cushioning components are arranged between the fixed end and the nested gasket and between the nut and the nested gasket, a gasket positioning structure for being embedded and positioned in a bolt hole in a flange is arranged on the middle gasket, and a cushioning component is further arranged on the middle gasket. According to the flange connecting fastener arranged in the structure, isolated flexible connection between flanges can be achieved, and the vibration problem caused by rigid connection can be solved.

Description

Technical Field

[0001] This utility model relates to the field of fastener product structure, and in particular to fastener product structure for flange connections. Background Technology

[0002] The inspection equipment in an intelligent inspection system for bulk material conveying equipment is a suspended track inspection robot. As the name suggests, the suspended track inspection robot is a device that uses a suspension drive mechanism to suspend a vision device on a track to obtain video images of the conveyor line. The system performs inspection work by analyzing and judging the video images.

[0003] The operating track of this type of robot is usually erected above the bulk material conveyor line. The operating track is composed of multiple short track segments spliced ​​together. The suspension drive mechanism mainly includes a frame structure that keeps the mechanism stable while hanging on the operating track, and an operating mechanism set on the frame structure to drive and guide the robot on the operating track. The visual inspection equipment is commonly connected to the frame structure below the frame structure via flanges. Existing flange connections are usually rigid connections. Due to the significant mechanical vibrations caused by factors such as the mechanical structure, surrounding environment, and the structure of the operating track during bulk material transportation, the visual inspection equipment under the rigid connection structure will experience significant shaking and swaying when running on the operating track due to mechanical vibrations. As a result, the video images captured by the visual equipment will also be affected by the aforementioned shaking and swaying, which to some extent affects the accuracy of manual observation or image detection analysis and judgment, thus affecting the inspection results.

[0004] In view of this, the inventors of this case have made improvements to the fasteners used for flange connections of suspended track inspection robots, thus giving rise to this case. Utility Model Content

[0005] The purpose of this invention is to provide a flange connection fastener with a shock-absorbing structure to improve the vibration problem caused by rigid connection in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a flange connection fastener with a shock-absorbing structure, comprising a bolt rod and a nut, a nested washer, and an intermediate washer that can be fitted and connected to the bolt rod. One end of the bolt rod is a fixed end, and the other end is a threaded end for connection with the nut. The outer diameter of the bolt rod is set to have a diameter difference with the diameter of the through hole in the nested washer and the intermediate washer, allowing for relative displacement during shock absorption. The nested washer is provided with a washer positioning structure for positioning and fitting into the bolt hole on the flange, and a washer centering structure for centering and adjustment in conjunction with the fixed end and the nut. The fixed end is provided with an end centering structure for cooperating with the washer centering structure. The nut is provided with a nut centering structure for cooperating with the washer centering structure. Shock-absorbing components are provided between the fixed end and the nested washer, and between the nut and the nested washer. The intermediate washer includes a washer with a washer positioning structure for positioning and fitting into the bolt hole on the flange, and a washer shock-absorbing component corresponding to the washer.

[0007] The gasket centering structure is a conical or spherical recess on the center of the side of the nested gasket facing the fixed end or nut when in use. The end centering structure and the nut centering structure are conical or spherical protrusions on the center of the side of the fixed end or nut facing the nested gasket, which can be embedded in the conical or spherical recess.

[0008] The shock-absorbing pad and / or shock-absorbing gasket are airbag rings.

[0009] The fixed end and / or nut are provided with an airbag positioning structure.

[0010] The airbag positioning structure has a rotating ring on the side of the fixed end or nut facing the airbag ring. The outer edge of the rotating ring has a protective edge surrounding the airbag ring. The outer edge of the rotating ring also has a connecting edge that hooks with the outer edge of the fixed end or nut. Between the fixed end or nut and the rotating ring, there are balls, ball grooves for positioning and embedding the balls, and annular grooves for the balls to roll.

[0011] The washer includes an upper washer and a lower washer, the washer damping component is sandwiched between the upper washer and the lower washer, the washer positioning structure is respectively provided on the upper washer and the lower washer, and the outer edges of the upper washer and the lower washer are respectively provided with positioning guards surrounding the washer damping component.

[0012] The gasket damping component has a multi-ring structure that is stacked on top of each other.

[0013] By adopting the above technical solution, the beneficial effects of this utility model are as follows: When using the flange connection fastener with the above structure, the operation is as follows: First, the intermediate washer is assembled according to the structure and placed in the corresponding bolt hole position between the upper and lower flanges, and the intermediate washer is positioned and embedded in the bolt hole. Then, a nested washer is first put on the bolt shank according to the structural orientation. Next, the threaded end is passed through the bolt hole of the flange and the intermediate washer that is positioned and connected between them, so that the positioning structure of the nested washer is embedded in the bolt hole. Then, another nested washer is put on the threaded end according to the structural orientation, so that the positioning structure of the nested washer is embedded in the bolt hole. Finally, the nut is screwed onto the threaded end according to the structural orientation and locked. After the flange connection fasteners with the above-described structure are locked in place, the resulting space, along with the centering, positioning, and damping structures on the intermediate gasket, fixed end, and nut, enables a non-rigid contact connection between the upper and lower flanges. Furthermore, the force generated by vibration can be flexibly converted through the deformation of the gasket / washer damping components and the flexible deformation provided by the space, weakening the force and transmitting it flexibly to the visual inspection equipment. This achieves a damping effect, effectively reducing noticeable shaking in video images and achieving the aforementioned objectives of this invention. The further structural design enhances the aforementioned effects and improves the stability of the product structure. The above-described flange connection fasteners can be used for other fastening applications requiring the same flexible connection effect between the upper and lower flanges as described in this invention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a flange connection fastener with a shock-absorbing structure, which is related to this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of a flange connection fastener with a shock-absorbing structure that relates to this utility model.

[0016] Figure 3 This is a cross-sectional view of the flange connection fastener with a shock-absorbing structure in use, which is related to this utility model.

[0017] In the picture:

[0018] Bolt rod 1; Fixed end 11; End centering structure 111; Threaded end 12;

[0019] Nut 2; Nut centering structure 21;

[0020] Nested gasket 3; Gasket positioning structure 31; Gasket centering structure 32;

[0021] 4. Middle washer; 41. Upper washer; 42. Lower washer; 43. Washer positioning structure; 44. Positioning guard edge;

[0022] 5. Gasket damping component; 6. Washer damping component;

[0023] Airbag positioning structure 7; rotating ring 71; guard edge 72; connecting edge 73;

[0024] 81. Ball bearing; 82. Ball groove; 83. Annular groove; 9. Movement space; 10. Flange. Detailed Implementation

[0025] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0026] This embodiment discloses a flange connection fastener with a vibration damping structure, which is particularly suitable for fastening upper and lower flange connections requiring vibration damping. The fastening connection of upper and lower flanges typically involves multiple sets of fasteners circumferentially. This embodiment describes the structure using one set of fasteners in the fastening connection of upper and lower flanges. Figure 1 , Figure 2 and Figure 3 The schematic diagram shown includes a bolt rod 1, a nut 2, two nested washers 3, an intermediate washer 4, two washer damping components 5, and one washer damping component 6. The two washer damping components 5 correspond one-to-one with the two nested washers 3, forming two sets. One set engages with one end of the bolt rod 1, acting on the upper surface of the two flanges; the other set engages with the nut 2, acting on the lower surface of the two flanges. The washer damping component 6 and the intermediate washer 4 form a set used for padding between the two flanges. The specific structural arrangement and positional connection relationships of each component in this embodiment are described in detail below with reference to the accompanying drawings.

[0027] The bolt rod 1, as Figure 2 As shown, one end is a fixed end 11 that is fixedly connected to the rod, usually with an internal or external hexagonal end structure. The figure shows an external hexagonal end structure, used to fix the bolt rod 1 during tightening operations to prevent it from rotating during locking. The other end is a threaded end 12 with external threads for locking with the nut 2. The nested washer 3 and the intermediate washer 4 have a central through hole for the bolt rod 1 to pass through. The outer diameter of the bolt rod 1 is smaller than the diameter of the central through hole of the nested washer 3 and the intermediate washer 4, and a movable space 5 is formed between the bolt rod 1 and the central through hole of the nested washer 3 and the intermediate washer 4. Figure 2As shown, the outer diameter of the bolt rod 1 is set to have a diameter difference that allows for relative displacement between the nested washer 3 and the intermediate washer 4, thereby forming the movable space 9. When installed and used in this way, the bolt rod 1 can reach the nested washer 3 and the intermediate washer 4 without direct contact as the locking operation is completed. This structural setting is one of the important structures for fasteners to not constitute a rigid connection.

[0028] The nested gasket 3 is provided with a gasket positioning structure 31 for positioning and fitting into the bolt holes on the flange 10, and a gasket centering structure 32 for engaging with the bolt rod 1 to adjust the alignment of the central axis of the bolt rod 1 with the central axis of the intermediate through hole. Therefore, the fixed end 11 is also provided with an end centering structure 111 for engaging with the gasket centering structure 32. Similarly, to achieve the effect of central axis alignment, the nut 2 is also provided with a nut centering structure 21 for engaging with the gasket centering structure 32. With the above structural setup, the nested gasket 3 can be stably positioned with the bolt hole of the flange 10 through the positioning structure 31. The effect of the nested gasket 3, which is not directly in contact with the bolt rod 1 after locking, is achieved by the end centering structure 111 and the nut centering structure 21 cooperating with the corresponding gasket centering structure 32 of the nested gasket 3 to play a centering and guiding role, so that the bolt rod 1 can adapt to automatically adjust to the center position. Thus, with the tightening operation, the outer wall of the bolt rod 1 will not contact the inner wall of the middle through hole of the nested gasket 3.

[0029] The gasket damping component 5 is provided between the fixed end 11 and the nested gasket 3, and between the nut 2 and the nested gasket 3. Flexible contact between adjacent components is achieved through the gasket damping component 5, while flexible indirect contact between flanges 10 is achieved through the intermediate gasket 4, thus providing a damping effect between the upper and lower flanges. The intermediate gasket 4 includes a corresponding gasket and a gasket damping component 6. In this invention, the gasket damping component 5 and the gasket damping component 6 can be made of materials or have a structure that provides flexible buffering to achieve flexible indirect contact between the upper and lower flanges and the bolt rod 1. In this embodiment, the gasket damping component 5 and the gasket damping component 6 preferably use internally inflated airbags, which can better convert and weaken the force generated by vibration and transmit it to the visual inspection equipment to achieve a damping effect. To ensure stable positioning of the intermediate gasket 4 between the flanges, a gasket positioning structure 43 is provided on it for positioning and embedding into the bolt holes on the flange 10. Figure 2As shown, in this embodiment, both the gasket positioning structure 43 and the gasket positioning structure 31 are positioning rings protruding from one side of the nested gasket 3 or the intermediate gasket 4. The outer diameter of the positioning ring corresponds to the diameter of the bolt hole of the flange 10. By embedding the positioning ring into the corresponding bolt hole, stability can be maintained during installation and use when locking.

[0030] In this embodiment, the structure of the gasket centering structure 32 is a conical or spherical recess provided at the center of the side of the nested gasket 3 facing the fixed end 11 or nut 2 when in use. The end centering structure 111 and the nut centering structure 21 are respectively conical or spherical protrusions with conical or spherical protrusions at the center of the side of the fixed end 11 or nut 2 facing the nested gasket 3, which can be embedded in the conical or spherical recess (as shown in the figure, the corresponding shapes are matched but the diameter is relatively small). Through the cooperation of the conical or spherical recess and the conical or spherical protrusion, the center position can be automatically guided and adjusted to achieve the desired effect.

[0031] For the aforementioned gasket damping component 5 and washer damping component 6, airbag rings are preferably used. To improve the relative stability of the structure, the intermediate washer 4 can be provided with a structure that positions and protects the washer damping component 6, as shown in the figure. The intermediate washer 4 includes an upper washer 41 and a lower washer 42, and the washer damping component 6 is sandwiched between the upper washer 41 and the lower washer 42. The washer positioning structure 43 is respectively provided on the upper washer 41 and the lower washer 42 (i.e., the aforementioned protruding positioning ring structure). The upper gasket 41 and the lower gasket 42 are respectively provided with positioning guards 44 surrounding the gasket damping component 6. Under the positioning of the gasket positioning structure 43, the positioning guards 44 surround the outside of the gasket damping component 6. In this way, the gasket damping component 6 can be positioned and protected, and the relative stability of the upper and lower flanges and the damping structure between them can be ensured. Here, in order to further improve the damping effect between the upper and lower flanges, the gasket damping component 6 can be a multi-ring structure that is stacked on top of each other.

[0032] In addition, an airbag positioning structure 7 can be provided on the fixed end 11 and nut 2 to improve the relative stability of the structure. As shown in the figure, the airbag positioning structure 7 is a rotating ring 71 placed on the side of the fixed end 11 or nut 2 facing the airbag ring. The outer edge of the rotating ring 71 is provided with a protective edge 72 surrounding the airbag ring. The outer edge of the rotating ring 71 is also provided with a connecting edge 73 that hooks and connects with the outer edge of the fixed end 11 or nut 2 to stabilize the relative position and movable connection between the rotating ring 71 and the fixed end 11 or nut 2. Between the fixed end 11 or nut 2 and the rotating ring 71, there are ball bearings 81, ball bearing grooves 82 for positioning and embedding the ball bearings 81, and annular grooves 83 for rolling the ball bearings 81. The ball bearing grooves 82 provide positioning and rolling for the ball bearings 81, and the annular grooves 83 provide orientation for the annular rolling. Under the structural action of the ball bearing grooves 82, ball bearings 81, and annular grooves 83, the smooth rotation of the rotating ring 71 can be improved. Thus, the rotating ring 71 and the fixed end 11 or nut 2 are connected together in a relatively stable and smooth manner. Through the above structural setting, the rotating ring 71 can balance the pressure applied to the airbag ring during the locking operation. The relative rotation of the fixed end 11 or nut 2 and the rotating ring 71 can avoid the airbag ring from twisting during the tightening process. It can also prevent the torsional restoring force of the airbag ring from pushing the nut 2 out of rotation and causing the fastener to not be locked. Therefore, the tension of the airbag ring can be better used to tighten the fixed end 11 or nut 2 to achieve a tight fastening.

[0033] The operating sequence of the fasteners with the above-described structure can be clearly understood by those skilled in the art through the above structural description and drawings, and will not be described in detail here.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A flange connection fastener with a shock-absorbing structure, characterized in that, Includes a bolt rod and a nut, nested washer, and intermediate washer that can be fitted onto the bolt rod. One end of the bolt rod is a fixed end, and the other end is a threaded end for connection with a nut. The outer diameter of the bolt rod is set to have a diameter difference with relative movable space between it and the diameter of the central through hole of the nested washer and the intermediate washer. The nested gasket is provided with a gasket positioning structure for fitting into the bolt holes on the flange for positioning, and a gasket centering structure for engaging with the fixed end and nut to achieve centering adjustment. The fixed end is provided with an end centering structure for cooperating with the washer centering structure, and the nut is provided with a nut centering structure for cooperating with the washer centering structure. A shock-absorbing component is provided between the fixed end and the nested washer, and between the nut and the nested washer. The intermediate gasket includes a gasket with a gasket positioning structure for positioning and fitting into the bolt holes on the flange, and a corresponding gasket damping component.

2. The flange connection fastener with a shock-absorbing structure as described in claim 1, characterized in that, The shock-absorbing pad and / or shock-absorbing gasket are airbag rings.

3. A flange connection fastener with a shock-absorbing structure as described in claim 2, characterized in that, The fixed end and / or nut are provided with an airbag positioning structure.

4. A flange connection fastener with a shock-absorbing structure as described in claim 3, characterized in that, The airbag positioning structure has a rotating ring on the side of the fixed end or nut facing the airbag ring. The outer edge of the rotating ring has a protective edge surrounding the airbag ring. The outer edge of the rotating ring also has a connecting edge that hooks with the outer edge of the fixed end or nut. Between the fixed end or nut and the rotating ring, there are balls, ball grooves for positioning and embedding the balls, and annular grooves for the balls to roll.

5. A flange connection fastener with a shock-absorbing structure as described in any one of claims 1-4, characterized in that, The washer includes an upper washer and a lower washer, the washer damping component is sandwiched between the upper washer and the lower washer, the washer positioning structure is respectively provided on the upper washer and the lower washer, and the outer edges of the upper washer and the lower washer are respectively provided with positioning guards surrounding the washer damping component.

6. A flange connection fastener with a shock-absorbing structure as described in claim 5, characterized in that, The gasket damping component has a multi-ring structure that is stacked on top of each other.

7. A flange connection fastener with a shock-absorbing structure as described in any one of claims 1-4, characterized in that, The gasket centering structure is a conical or spherical recess on the center of the side of the nested gasket facing the fixed end or nut when in use. The end centering structure and the nut centering structure are conical or spherical protrusions on the center of the side of the fixed end or nut facing the nested gasket, which can be embedded in the conical or spherical recess.

8. A flange connection fastener with a shock-absorbing structure as described in claim 5, characterized in that, The gasket centering structure is a conical or spherical recess on the center of the side of the nested gasket facing the fixed end or nut when in use. The end centering structure and the nut centering structure are conical or spherical protrusions on the center of the side of the fixed end or nut facing the nested gasket, which can be embedded in the conical or spherical recess.

9. A flange connection fastener with a shock-absorbing structure as described in claim 6, characterized in that, The gasket centering structure is a conical or spherical recess on the center of the side of the nested gasket facing the fixed end or nut when in use. The end centering structure and the nut centering structure are conical or spherical protrusions on the center of the side of the fixed end or nut facing the nested gasket, which can be embedded in the conical or spherical recess.

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