Bolt connecting structure

Abstract

The utility model provides a bolt connecting structure, which belongs to the technical field of component connection and comprises a first component, a second component and a connecting bolt, a first gasket is arranged on the outer side of the first component, a first supporting edge is transversely arranged in the middle of the outer side face of the first gasket, and a second gasket is arranged on the outer side of the second component. A second supporting edge is transversely arranged in the middle of the outer side surface of the second gasket; the connecting bolt sequentially penetrates through the first gasket, the first component, the second component and the second gasket. According to the bolt connecting structure provided by the utility model, the connecting bolt can rotate within the clearance range, and rigid obstruction cannot be generated on the displacement of the structural member, so that the joint is prevented from bearing overlarge external force, the stress is effectively dispersed, and the stress concentration phenomenon is prevented. Therefore, the area, located at the bolt connecting position, of the structural part does not bear too large stress any more, and the connecting stability of the two structural parts is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of component connection, more specifically, relates to a bolt connection structure. BACKGROUND

[0002] Among many mechanical connection structures, bolts are widely used as a common fastener. In the traditional bolt connection, the bolt is usually fixed and only relies on the screwing of the thread to achieve the fastening effect.

[0003] However, in some special working conditions or structural designs, such as connecting two structural members with bolts, if the conventional bolt connection is used, the conventional bolt will hinder the synchronous rotation of the two connecting members, the bolt and the connection of the structural member will bear a large external force, the stress will be concentrated, and the area of the structural member at the bolt connection will be prone to cracking or damage, thereby reducing the connection stability of the two structural members. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a bolt connection structure, which aims to solve the problem that when two structural members are connected with conventional bolts, the two connecting members cannot rotate synchronously due to the hindrance of the bolts, and the area of the structural member at the bolt connection is prone to cracking or damage.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a bolt connection structure, which comprises a first component, a second component, and a connecting bolt. The first component and the second component are mutually attached and coaxially provided with a through hole. The outer side of the first component is provided with a first gasket, and the outer side of the first gasket is provided with a first support rib in the middle. The outer side of the second component is provided with a second gasket, and the outer side of the second gasket is provided with a second support rib in the middle.

[0006] The connecting bolt sequentially penetrates the first gasket, the first component, the second component, and the second gasket. The connecting bolt is provided with a fixed nut on one end outside the first gasket, which is pressed against the first support rib. The upper side and the lower side of the fixed nut form a first reserved gap with the first gasket. The end of the connecting bolt penetrating the second gasket is provided with a locking nut screwed on the second support rib. The upper side and the lower side of the locking nut form a second reserved gap with the second gasket. The circumference of the connecting bolt forms a first circumferential gap with the through hole, and the circumference of the connecting bolt forms a second circumferential gap with the through hole of the first gasket and the through hole of the second gasket.

[0007] In a possible implementation, the inner side of the locking nut is fixedly provided with a third gasket, the inner side surface of the third gasket is pressed against the second support rib, and the upper side and the lower side of the third gasket respectively form the second reserved gap with the second gasket.

[0008] In a possible implementation, the first support rib is provided with an arc end near one end of the fixed nut, and the second support rib is provided with an arc end near one end of the third gasket.

[0009] In a possible implementation, the fixed nut is laterally provided with an arc-shaped adaptive slot in the middle of one side near the first gasket, and the third gasket is laterally provided with an arc-shaped adaptive slot in the middle of one side near the second gasket, and the two arc ends are respectively abutted in the two arc-shaped adaptive slots.

[0010] In a possible implementation, the arc of the arc-shaped adaptive slot is greater than the arc of the arc end.

[0011] In a possible implementation, the outer side surface of the first gasket is circumferentially provided with a first support body, and the height of the first support body is less than the width of the first reserved gap.

[0012] In a possible implementation, the first support body includes a first stiffening rib extending radially along the first gasket, and the first stiffening rib is fixedly arranged on the outer side surface of the first gasket.

[0013] In a possible implementation, the outer side surface of the second gasket is circumferentially provided with a second support body, and the height of the second support body is less than the width of the second reserved gap.

[0014] In a possible implementation, the second support body includes a second stiffening rib extending radially along the second gasket, and the second stiffening rib is fixedly arranged on the outer side surface of the second gasket.

[0015] The bolt connection structure has the advantages that compared with the prior art, the first reserved gap, the second reserved gap, the first circumferential gap and the second circumferential gap are arranged to provide a space for synchronous rotation of the two structural members. When the two structural members rotate synchronously, the connecting bolt can rotate within the gap and does not rigidly hinder the displacement of the structural member, thereby avoiding that the connection part bears excessive external force, effectively dispersing stress and preventing stress concentration. This makes the area of the structural member at the bolt connection part not bear excessive stress, reduces the risk of cracking or damage, greatly improves the connection stability of the two structural members, and ensures the safety and reliability of the structure under special working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0017] Figure 1 The bolt connection structure provided by the present application is shown in the structural diagram.

[0018] Figure 2 The first gasket provided by the present application is shown in the structural diagram.

[0019] Figure 3 The first gasket provided by the present application is shown in the structural diagram. Figure 2 The cross-sectional view along A-A.

[0020] Figure 4 The second gasket provided by the present application is shown in the structural diagram.

[0021] Figure 5 The second gasket provided by the present application is shown in the structural diagram. Figure 4 The cross-sectional view along B-B.

[0022] Figure 6 The fixed nut provided by the present application is shown in the structural diagram.

[0023] Figure 7 The third gasket provided by the present application is shown in the structural diagram.

[0024] In the drawings:

[0025] 100, first component; 200, second component; 300, connecting bolt; 310, fixed nut; 311, first reserved gap; 320, locking nut; 321, second reserved gap; 330, first circumferential gap; 340, second circumferential gap; 400, first gasket; 410, first supporting edge; 420, first stiffening rib; 500, second gasket; 510, second supporting edge; 520, second stiffening rib; 600, third gasket; 700, arc-shaped matching groove. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0027] Unless otherwise explicitly defined, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.

[0028] Unless otherwise clearly defined, the orientation words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as limiting the specific protection scope of the utility model.

[0029] Please refer to Figure 1 , now a bolt connection structure provided by the utility model will be described. A bolt connection structure, comprising a first component 100, a second component 200 and a connecting bolt 300, the first component 100 and the second component 200 are mutually adhered and coaxially provided with a through hole, the outer side of the first component 100 is provided with a first gasket 400, the outer side of the first gasket 400 is provided with a first support rib 410 in the middle, the outer side of the second component 200 is provided with a second gasket 500, the outer side of the second gasket 500 is provided with a second support rib 510 in the middle,

[0030] The connecting bolt 300 penetrates the first gasket 400, the first component 100, the second component 200 and the second gasket 500 in turn, the connecting bolt 300 is provided with a fixed nut 310 on one end outside the first gasket 400, which is pressed on the first support rib 410, the upper side and the lower side of the fixed nut 310 form a first reserved gap 311 with the first gasket 400 respectively, the end of the connecting bolt 300 penetrating the second gasket 500 is provided with a locking nut 320, which is pressed on the second support rib 510, the upper side and the lower side of the locking nut 320 form a second reserved gap 321 with the second gasket 500 respectively, the circumference of the connecting bolt 300 forms a first circumferential gap 330 with the through hole, and the circumference of the connecting bolt 300 forms a second circumferential gap 340 with the through hole of the first gasket 400 and the through hole of the second gasket 500.

[0031] The utility model provides a bolt connection structure, compared with prior art, first the first component 100 and second component 200 mutually adhere to, make the through hole of coaxial opening of both alignment. Subsequently, the first gasket 400 is placed to the outside of the first component 100, and the first support edge 410 of the outside surface of the first gasket 400 is adjusted to the mode of middle transverse arrangement, similarly, the second gasket 500 is placed to the outside of the second component 200, and the second support edge 510 of the middle transverse arrangement of the outside surface of the second gasket 500 is in the proper orientation. Then, the connecting bolt 300 is sequentially penetrated through the first gasket 400, the first component 100, the second component 200 and the second gasket 500. The fixed nut 310 is installed at the end of the connecting bolt 300 located at the outside of the first gasket 400, and the fixed nut 310 is screwed tightly, so that it is pressed on the first support edge 410, at this time, the upper side and the lower side of the fixed nut 310 form the first reserved gap 311 with the first gasket 400, and the existence of the gap reserves space for the subsequent possible relative displacement. At the end of the connecting bolt 300 penetrating out of the second gasket 500, the locking nut 320 is screwed, and the locking nut 320 is also screwed tightly and pressed on the second support edge 510, and the upper side and the lower side of the locking nut 320 form the second reserved gap 321 with the second gasket 500. At the same time, the circumferential direction of the connecting bolt 300 forms the first circumferential gap 330 with the through hole, and the circumferential direction of the connecting bolt 300 forms the second circumferential gap 340 with the through hole of the first gasket 400 and the through hole of the second gasket 500, and these circumferential gaps jointly ensure that there is a certain movement space between the connecting bolt 300 and each component.

[0032] In the use process, when the two structural members rotate synchronously, the connecting bolt 300 will not hinder the rotation of the two structural members like a conventional bolt. Because of the existence of the above-mentioned reserved gap and circumferential gap, the connecting bolt 300 can rotate and adjust within the range of the gap to some extent, so as to adapt to the relative displacement change of the structural member.

[0033] The utility model provides a bolt connection structure, through setting up the first reserved gap 311, the second reserved gap 321, the first circumferential gap 330 and the second circumferential gap 340, provide the movement space for the synchronous rotation of two structural members. When the two structural members rotate synchronously, the connecting bolt 300 can rotate within the range of the gap, and will not rigidly hinder the displacement of the structural member, thereby avoiding that the connection place bears excessive external force, effectively dispersing the stress, preventing the stress concentration phenomenon from happening. This makes the area of the structural member at the bolt connection place no longer bear excessive stress, reduces the risk of cracking or damage, greatly improves the connection stability of the two structural members, and guarantees the safety and reliability of the structure under special working conditions.

[0034] It is worth noting that the bolt connection structure provided by the utility model is applied to the first structural member 100 and the second structural member 200 which synchronously rotate. Therefore, the first structural member 100 and the second structural member 200 which are sequentially penetrated by the connecting bolt 300 can be an integral structural member, or a plurality of structural members, i.e. the first structural member 100, the second structural member 200,..., the Nth structural member, N >= 2, sequentially penetrated by the connecting bolt 300, as long as the above N structural members synchronously rotate, and the bolt connection structure provided by the utility model can be applied to the bolt connection structure.

[0035] Please refer to Figure 1 The inner side of the locking nut 320 is fixedly provided with a third gasket 600, the third gasket 600 is integrally formed on the inner side of the locking nut 320, the inner side surface of the third gasket 600 is tightly pressed on the second supporting rib 510, and the upper side and the lower side of the third gasket 600 form the second reserved gap 321 with the second gasket 500. The inner side surface of the third gasket 600 is tightly pressed on the second supporting rib 510, and the second reserved gap 321 formed between the third gasket 600 and the second gasket 500 cooperates with the circumferential gap between the connecting bolt 300 and the components to jointly build a flexible displacement buffer system. When the two structural members synchronously rotate, the system can effectively avoid the rigid restriction of the connecting bolt 300 on the displacement of the structural member, prevent the connecting bolt 300 from tilting, and enable the structural member to freely rotate within the gap.

[0036] Please refer to Figure 1 , Figure 3 and Figure 5 The end of the first supporting rib 410 close to the fixed nut 310 and the end of the second supporting rib 510 close to the third gasket 600 are both arc ends, further enhancing the performance advantages of the structure. The design of the arc end makes the contact between the fixed nut 310 and the first supporting rib 410 and the third gasket 600 and the second supporting rib 510 more smooth, and when the connecting bolt 300 tilts and rotates, the arc end can effectively reduce the rotation resistance while maintaining the always-tight state. When the two structural members synchronously rotate, the arc end helps the rotation of the connecting bolt 300, and the connecting bolt 300 can always maintain the pressing force on the arc end when rotating, ensuring that the first member 100 and the second member 200 are always in the state of adhesion.

[0037] Please refer to Figure 6 and Figure 7The middle part of the side of the fixed nut 310 close to the first gasket 400 and the middle part of the side of the third gasket 600 close to the second gasket 500 are transversely provided with arc-shaped matching grooves 700, and the two arc surfaces are correspondingly abutted in the two arc-shaped matching grooves 700. The corresponding design of the arc-shaped matching grooves 700 and the arc surfaces enables the fixed nut 310 and the third gasket 600 to have clear positioning and guiding when being installed. The installation personnel can more quickly and accurately assemble the fixed nut 310 and the third gasket 600, thereby significantly improving the installation efficiency. Meanwhile, the close-fitting mode of the two reduces the shaking in the rotating process of the connecting bolt 300, and further reduces the rotating resistance. When the two structural members are synchronously rotated, the cooperation of the arc-shaped matching grooves 700 and the arc surfaces can more efficiently guide the transmission path of the force. The arc surface abuts in the arc-shaped matching groove 700 to form a stable stress contact surface. Compared with the plane contact, the curved surface cooperation mode can ensure that the connecting bolt 300 always provides a pressing force while smoothly rotating. In cooperation with the original reserved gap and the circumferential gap, the displacement buffer system is further strengthened, and the stress concentration phenomenon is effectively avoided. This makes the stress borne by the structural member at the bolt connection place greatly reduced, greatly reduces the risk of cracking or damage of the structural member, and significantly improves the stability and reliability of the structure under special working conditions.

[0038] Specifically, the curvature of the arc-shaped matching groove 700 is greater than that of the arc surface. When the two structural members are synchronously rotated, the arc surface can slightly slide and rotate in the arc-shaped matching groove 700. Compared with the case where the curvatures of the two are the same, the arc-shaped matching groove 700 with a larger curvature can better release the stress generated by the structural member misalignment, ensure the smooth rotation of the connecting bolt 300, and form a more perfect stress buffer system in cooperation with the original reserved gap and the circumferential gap.

[0039] Please refer to Figures 1 to 3 The outer side of the first gasket 400 is circumferentially provided with a first support body, and the height of the first support body is less than the width of the first reserved gap 311. The first support body can enhance the structural rigidity of the first gasket 400, and at the same time, when the fixed nut 310 at one end of the connecting bolt 300 rotates, the fixed nut 310 first contacts the first support body to reach the maximum rotation amount, thereby avoiding the fixed nut 310 directly impacting the first gasket 400 and causing damage or deformation of the first gasket 400.

[0040] Specifically, the first support body comprises a first reinforcing rib 420 extending radially along the first gasket 400, and the first reinforcing rib 420 is fixedly arranged on the outer side of the first gasket 400. The first reinforcing rib 420 is integrally formed on the outer side of the first gasket 400 in a circumferential direction, thereby enhancing the structural strength of the first gasket 400 as a whole. Preferably, the first reinforcing rib 420 can be made of an elastic material, such as rubber, and is bonded on the outer side of the first gasket 400 in a circumferential direction, or an elastic layer can be bonded on the end surface of the first reinforcing rib 420, so as to buffer the impact of the fixing nut 310 on the first gasket 400.

[0041] Please refer to Figure 1 , Figure 4 and Figure 5 , the outer side of the second gasket 500 is provided with a second support body in a circumferential direction, and the height of the second support body is less than the width of the second reserved gap 321. The second support body can enhance the structural rigidity of the second gasket 500, and when the locking nut 320 at one end of the connecting bolt 300 rotates, the locking nut 320 first contacts the second support body to reach the maximum rotation amount, thereby avoiding the locking nut 320 directly impacting the second gasket 500 and causing damage or deformation of the second gasket 500.

[0042] Specifically, the second support body comprises a second reinforcing rib 520 extending radially along the second gasket 500, and the second reinforcing rib 520 is fixedly arranged on the outer side of the second gasket 500. The second reinforcing rib 520 is integrally formed on the outer side of the second gasket 500 in a circumferential direction, thereby enhancing the structural rigidity of the second gasket 500 as a whole. Preferably, the second reinforcing rib 520 can be made of an elastic material, such as rubber, and is bonded on the outer side of the second gasket 500 in a circumferential direction, or an elastic layer can be bonded on the end surface of the second reinforcing rib 520, so as to buffer the impact of the locking nut 320 on the second gasket 500.

[0043] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bolted joint structure, characterized by, The utility model provides a connecting bolt (300) is passed through first gasket (400), first component (100), second component (200) and second gasket (500) in proper order, and the connecting bolt (300) is located first gasket (400) outside one end and has fixed nut (310) that is pressed on first support edge (410), and the upper side and the downside of fixed nut (310) form first reserved gap (311) with first gasket (400) respectively, and the one end of connecting bolt (300) is screwed out second gasket (500) and is installed and is pressed on the locking nut (320) of second support edge (510), and the upper side and the downside of locking nut (320) form second reserved gap (321) with second gasket (500) respectively, and the circumference of connecting bolt (300) forms first circumferential gap (330) with the through hole, and the circumference of connecting bolt (300) forms second circumferential gap (340) with the through hole of first gasket (400) and the through hole of second gasket (500) respectively. The inner side of locking nut (320) is fixedly provided with third gasket (600), the inner side of third gasket (600) is pressed on second support edge (510), and the upper side and the downside of third gasket (600) form second reserved gap (321) with second gasket (500) respectively.

2. A bolted joint structure as claimed in claim 1, wherein The one end of first support edge (410) close to fixed nut (310) and the one end of second support edge (510) close to third gasket (600) are provided with arc ends.

3. A bolted joint structure as claimed in claim 2, wherein The middle part of one side of fixed nut (310) close to first gasket (400) and the middle part of one side of third gasket (600) close to second gasket (500) are provided with arc-shaped adaptive grooves (700), and two arc ends are correspondingly abutted in two arc-shaped adaptive grooves (700).

4. A bolted joint structure as claimed in claim 3, wherein The curvature of arc-shaped adaptive groove (700) is greater than the curvature of arc end.

5. A bolted joint structure as claimed in claim 4, wherein The outer side of first gasket (400) is circumferentially provided with first support body, and the height of first support body is less than the width of first reserved gap (311).

6. A bolted joint structure according to any one of claims 1-5, wherein The first support body includes first stiffening rib (420) extending radially along first gasket (400), and first stiffening rib (420) is fixedly arranged on the outer side of first gasket (400).

7. A bolted joint structure as claimed in claim 6, wherein ​ 8. A bolted joint structure as claimed in any one of claims 1 to 5, wherein The outer side of the second gasket (500) is circumferentially provided with a second support body, and the height of the second support body is less than the width of the second reserved gap (321).

9. A bolted joint structure as claimed in claim 8, wherein, The second support body comprises a second reinforcing rib (520) extending radially along the second gasket (500), and the second reinforcing rib (520) is fixedly arranged on the outer side of the second gasket (500).

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