Air bag bolt and industrial equipment

Abstract

The invention belongs to the technical field of assembly, and discloses an air bag bolt and industrial equipment. According to the air bag bolt, a bolt rod part comprises a pin shaft section and an external thread section which are coaxially connected, the external thread section is located on the side, away from a bolt head, of the pin shaft section, a nut can be in threaded connection with the external thread section, and a first annular air bag is arranged on the pin shaft section in a sleeving mode and internally provided with a first air bag cavity; the first annular air bag is provided with a first air bag opening communicated with the first air bag cavity, so that the bolt rod part is prevented from being in direct contact with the inner side wall of the pin hole so as to prevent the bolt rod part and the inner side wall of the pin hole from being abraded, the situation that the equipment operation precision is affected by displacement generated by a spliced rack is prevented, and the radial reinforcing force is improved so as to improve the positioning effect of the bolt body. According to the industrial equipment, by applying the air bag bolts, the situation that the rack is loosened due to the influence of factors such as vibration and impact can be avoided, and meanwhile the splicing precision of the rack can be improved.

Description

Technical Field

[0001] This invention relates to the field of assembly technology, and more particularly to an airbag bolt and industrial equipment. Background Technology

[0002] In the installation and assembly of industrial equipment, spliced ​​frames are often used as structural supports, and the splicing and positioning of adjacent frame bodies is a key step in ensuring the overall structural stability and operational accuracy of the industrial equipment. Currently, frame splicing mostly adopts the traditional positioning method of bolts and pin holes, that is, the bolt shank is inserted into the pin hole to achieve initial positioning, and then the nuts are tightened to complete the fastening.

[0003] However, bolt-positioned splicing has the following problems: the fit between the bolt and the pin hole is easily affected by factors such as vibration and impact, and loosening is likely to occur in the radial direction, causing displacement of the spliced ​​frame and affecting the operating accuracy of the equipment; during the positioning and tightening process, the bolt shank directly contacts the inner wall of the pin hole, generating friction, which will lead to wear of the bolt shank and the inner wall of the pin hole after long-term use, shortening the bolt's service life; and the fixing is achieved solely by the axial force of the bolt, lacking radial reinforcement, so the positioning effect needs to be improved.

[0004] Therefore, there is an urgent need for an airbag bolt and industrial equipment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an airbag bolt and device that can prevent radial loosening, reduce wear on the frame, and improve positioning effect.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Firstly, an airbag bolt is provided, comprising:

[0008] A bolt body, the bolt body comprising a bolt head and a bolt shank coaxially connected, the bolt shank comprising a pin section and an external thread section coaxially connected to each other, the external thread section being located on the side of the pin section opposite to the bolt head;

[0009] Nut, which can be threadedly connected to the external thread section;

[0010] The first annular airbag is sleeved on the pin section, and the first annular airbag has a first airbag cavity inside, and the first annular airbag has a first airbag opening that communicates with the first airbag cavity.

[0011] In some embodiments, the airbag bolt further includes a second annular airbag, the second annular airbag being sleeved on the pin section, the second annular airbag having a second airbag cavity, the second annular airbag having a second airbag opening communicating with the second airbag cavity, and the second annular airbag being located between the first annular airbag and the bolt head.

[0012] In some embodiments, the outer diameter of the second annular airbag is larger than the outer diameter of the first annular airbag.

[0013] In some embodiments, the second annular airbag is further provided with a third airbag opening that communicates with the second airbag cavity, and the first airbag opening and the third airbag opening are connected by an air tube.

[0014] In some embodiments, the airbag bolt further includes a washer, which is sleeved on the pin section and located between the first annular airbag and the second annular airbag.

[0015] In some embodiments, an inflation port is provided on the end face of the bolt shank, and the inflation port is connected to the first airbag port.

[0016] In some embodiments, the airbag bolt further includes an elastic plug, which is inserted into the inflation port and used to block the inflation port.

[0017] In some embodiments, the peripheral sidewall of the first annular airbag facing the inner sidewall of the pin hole is provided with anti-slip texture.

[0018] In some embodiments, the first annular airbag is a polyester fiber airbag and / or the second annular airbag is a polyester fiber airbag.

[0019] Secondly, an industrial device is provided, including a frame and the aforementioned airbag bolts, wherein two adjacent frames are joined together by the airbag bolts.

[0020] The beneficial effects of this invention are:

[0021] The airbag bolt provided by this invention allows the first annular airbag to be inserted into the pin hole of the frame simultaneously with the bolt shank of the bolt body during frame assembly. Air is then inflated into the first airbag cavity through the airbag opening, causing the first annular airbag to expand. This prevents direct contact between the bolt shank and the inner wall of the pin hole, thus preventing wear on both and extending the bolt body's service life. Simultaneously, the expansion of the first annular airbag applies radial pressure to the inner wall of the pin hole, preventing the bolt body and pin hole from loosening radially due to vibration, impact, or other factors. This prevents displacement of the assembled frame, which would affect equipment operating accuracy. Furthermore, the radial pressure applied to the inner wall of the pin hole by the expanding first annular airbag increases the radial reinforcement force and improves the bolt body's positioning effect.

[0022] The industrial equipment provided by this invention includes a frame and airbag bolts. Two adjacent frames are spliced ​​together by airbag bolts, which can avoid the frame from loosening due to factors such as vibration and impact, and at the same time improve the splicing accuracy of the frame. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the airbag bolt provided in an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional schematic diagram of the airbag bolt splicing frame provided in the embodiment of the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0026] In the picture:

[0027] 100. Frame; 101. Pin hole;

[0028] 1. Bolt body; 11. Bolt head; 12. Bolt shank; 121. Pin section; 122. External thread section; 13. Air inlet;

[0029] 2. Nuts;

[0030] 3. First annular airbag; 31. First airbag cavity; 32. First airbag opening;

[0031] 4. Second annular airbag; 41. Second airbag cavity; 42. Second airbag opening; 43. Third airbag opening;

[0032] 5. Gaskets;

[0033] 6. Elastic plug. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Figure 1 A schematic diagram of the airbag bolt provided in this embodiment is shown. Figure 2 A cross-sectional view of the airbag bolt splicing frame 100 provided in this embodiment is shown. Figure 3 It shows Figure 2 A magnified view of a portion of point A in the diagram. (See diagram below.) Figures 1 to 3 As shown, the airbag bolt provided in this embodiment has a locking principle that is basically the same as that of ordinary bolts. The bolt body 1 includes a bolt head 11 and a bolt shank 12 that are coaxially connected. The bolt shank 12 includes a pin shaft section 121 and an external thread section 122 that are coaxially connected to each other. The external thread section 122 is located on the side of the pin shaft section 121 away from the bolt head 11. The nut 2 is threadedly connected to the external thread section 122. The frame 100 has a pin hole 101. After the pin holes 101 of the two frames 100 are aligned, the bolt shank 12 passes through the pin hole 101 in sequence. The nut 2 is threadedly connected to the external thread section 122 of the bolt shank 12, locking the two frames 100 and thus splicing the frames 100.

[0039] Continue as Figures 1 to 3As shown, the airbag bolt provided in this embodiment also includes a first annular airbag 3. The first annular airbag 3 is sleeved on the pin shaft section 121. The first annular airbag 3 has a first airbag cavity 31 inside. The first annular airbag 3 has a first airbag opening 32 that communicates with the first airbag cavity 31. So that when splicing the frame 100, the first annular airbag 3 can be inserted into the pin hole 101 of the frame 100 along with the bolt shank 12 of the bolt body 1. Then, air is inflated into the first airbag cavity 31 through the first airbag opening 32, thereby causing the first annular airbag 3 to expand, thus preventing the bolt shank from being inflated. The bolt shank 12 directly contacts the inner wall of the pin hole 101 to prevent wear on the bolt shank 12 and the inner wall of the pin hole 101, thereby improving the service life of the bolt body 1. At the same time, the first annular air bladder 3 expands and applies radial pressure to the inner wall of the pin hole 101, preventing the fit between the bolt body 1 and the pin hole 101 from being affected by vibration, impact and other factors, and preventing loosening in the radial direction. This also prevents the frame 100 after splicing from shifting, which would affect the operating accuracy of the equipment. Furthermore, the expansion of the first annular air bladder 3 applies radial pressure to the inner wall of the pin hole 101, thereby increasing the radial reinforcement force and improving the positioning effect of the bolt body 1.

[0040] In some embodiments, the peripheral sidewall of the first annular airbag 3 facing the inner wall of the pin hole 101 is provided with anti-slip texture, thereby increasing the friction between the first annular airbag 3 and the inner wall of the pin hole 101 and improving the stability of the bolt rod body positioning. It should be noted that the specific type of anti-slip texture is not limited here, and those skilled in the art can reasonably set it according to actual needs, which will not be elaborated here.

[0041] Preferably, the first annular airbag 3 is a polyester fiber airbag, which gives the first annular airbag 3 good elasticity and structural strength. When air is inflated into the first airbag cavity 31 through the first airbag opening 32, the first annular airbag 3 can expand and apply radial pressure to the side wall of the pin hole 101. When air is not inflated into the first airbag cavity 31 through the first airbag opening 32, the first annular airbag 3 can shrink to facilitate the fitting of the bolt shank 12 installed on the bolt body 1.

[0042] Continue as Figures 1 to 3 As shown, the airbag bolt also includes a second annular airbag 4, which is sleeved on the pin shaft section 121. The second annular airbag 4 has a second airbag cavity 41 inside, and a second airbag opening 42 communicating with the second airbag cavity 41 is opened on the second annular airbag 4. The second annular airbag 4 is located between the first annular airbag 3 and the bolt head 11, so that when the bolt body 1 is spliced ​​into the frame 100, the first annular airbag 3 can be inserted into the pin hole 101 along with the bolt shank 12. The second annular airbag 4 is set outside the pin hole 101 to avoid direct contact between the bolt head 11 and the frame 100, thereby preventing wear on the bolt head 11 and improving the service life of the bolt body 1.

[0043] Preferably, the second annular airbag 4 is a polyester fiber airbag, thereby giving the second annular airbag 4 good elasticity and structural strength.

[0044] In some embodiments, the outer diameter of the second annular airbag 4 is larger than the outer diameter of the first annular airbag 3, thereby preventing the second annular airbag 4 from expanding during inflation and squeezing the first annular airbag 3 and penetrating into the pin hole 101, so as to affect the expansion of the first annular airbag 3 and squeeze the inner wall of the pin hole 101.

[0045] like Figures 2 to 3 As shown, the second annular airbag 4 also has a third airbag opening 43 that communicates with the second airbag cavity 41. The first airbag opening 32 and the third airbag opening 43 are connected by an air tube. Thus, when inflating the first airbag cavity 31 and the second airbag cavity 41, air can first be inflated into the second airbag cavity 41 through the third airbag opening 43. The gas flows from the second airbag cavity 41 through the second airbag opening 42, the air tube, and the first airbag opening 32 into the first airbag cavity 31. This simplifies the airbag inflation principle of the airbag bolt and improves the work efficiency of the staff using the airbag bolt splicing frame 100.

[0046] Continued Figures 1 to 3 As shown, the airbag bolt also includes a washer 5, which is sleeved on the pin section 121 and located between the first annular airbag 3 and the second annular airbag 4. This increases the contact area between the first annular airbag 3 and the second annular airbag 4 when inflating the first airbag cavity 31 and the second airbag cavity 41. This prevents the first annular airbag 3 and the second annular airbag 4 from rupturing due to excessive local pressure, thus improving the reliability of the airbag bolt. Specifically, the washer 5 has a perforation for the air supply tube to pass through, preventing the first annular airbag 3 and the second annular airbag 4 from squeezing the air tube and thus preventing normal airflow between the first airbag opening 32 and the second airbag opening 42.

[0047] like Figures 2 to 3 As shown, an inflation port 13 is provided on the end face of the bolt rod 12. The inflation port 13 is connected to the first airbag port 32, so that gas can be injected into the second airbag cavity 41 through the inflation port 13, and the first annular airbag 3 and the second annular airbag 4 will expand in sequence.

[0048] In some embodiments, the airbag bolt also includes a pneumatic connector installed at the inflation port 13, thereby enabling the use of an air pump to supply air and quickly connect the air tube to the pneumatic connector, improving the efficiency of workers in inflating the first airbag cavity 31 and the second airbag cavity 41.

[0049] like Figures 1 to 2As shown, the airbag bolt also includes an elastic plug 6. The elastic plug 6 is inserted into the inflation port 13 and used to seal the inflation port 13. After the first annular airbag 3 and the second annular airbag 4 are inflated by inflating the first airbag cavity 31 and the second airbag cavity 41, the elastic plug 6 can be inserted into the inflation port 13 to prevent the gas in the first airbag cavity 31 and the second airbag cavity 41 from leaking out of the inflation port 13. It should be noted that the elastic plug 6 can be a rubber plug, so that the elastic plug 6 can be inserted and removed into the inflation port 13. When the gas in the first airbag cavity 31 and the second airbag cavity 41 is insufficient, the elastic plug 6 can be removed, and gas can be added to the first airbag cavity 31 and the second airbag cavity 41 through the inflation port 13. The elastic plug 6 can also be a gel block, which directly seals the inflation port 13 to prevent the gas in the first airbag cavity 31 and the second airbag cavity 41 from leaking out of the inflation port 13.

[0050] The industrial equipment provided in this embodiment includes a frame 100 and airbag bolts. Two adjacent frames 100 are spliced ​​together by airbag bolts, which can avoid the frame 100 from loosening due to factors such as vibration and impact, and at the same time improve the splicing accuracy of the frame 100.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An air bag bolt characterized by, The air bag bolt comprises a bolt body (1), a nut (2), a first annular air bag (3), and a second annular air bag (4). The bolt body (1) comprises a bolt head (11) and a bolt rod (12) connected coaxially, the bolt rod (12) comprises a pin shaft section (121) and an external thread section (122) connected coaxially, and the external thread section (122) is located on the side of the pin shaft section (121) away from the bolt head (11). The nut (2) is threadedly connected with the external thread section (122). The first annular air bag (3) is sleeved on the pin shaft section (121), has a first air bag cavity (31) in the first annular air bag (3), and is provided with a first air bag opening (32) on the first annular air bag (3) and in communication with the first air bag cavity (31).

2. The air bag bolt of claim 1, wherein The second annular air bag (4) is sleeved on the pin shaft section (121), has a second air bag cavity (41) in the second annular air bag (4), is provided with a second air bag opening (42) on the second annular air bag (4) and in communication with the second air bag cavity (41), and is located between the first annular air bag (3) and the bolt head (11).

3. The air bag bolt of claim 2, wherein The outer diameter of the second annular air bag (4) is greater than the outer diameter of the first annular air bag (3).

4. The air bag bolt of claim 2, wherein The second annular air bag (4) is further provided with a third air bag opening (43) in communication with the second air bag cavity (41), and the first air bag opening (32) and the third air bag opening (43) are in communication through an air pipe.

5. The air bag bolt of claim 4, wherein The air bag bolt further comprises a gasket (5) sleeved on the pin shaft section (121) and located between the first annular air bag (3) and the second annular air bag (4).

6. The air bag bolt of claim 4, wherein An inflation opening (13) is formed on the end face of the bolt rod (12) and in communication with the first air bag opening (32).

7. The air bag bolt of claim 6, wherein The air bag bolt further comprises an elastic plug (6) plugged into the inflation opening (13) and used for plugging the inflation opening (13).

8. The air bag bolt according to any one of claims 2 to 7, characterized in that The first annular air bag (3) is provided with an anti-skid pattern on the circumferential wall facing the inner side wall of the pin hole (101).

9. The air bag bolt according to any one of claims 2 to 7, characterized in that The first annular air bag (3) is a polyester fiber bag and / or the second annular air bag (4) is a polyester fiber bag.

10. An industrial plant, characterized in that, The air bag bolt is used for splicing adjacent two racks (100).

Images