High-temperature vibration locking device

Abstract

The invention provides a high-temperature vibration locking device. The high-temperature vibration locking device comprises a vibration part; the flange connecting piece is arranged on one side of the vibration piece, and the edge positions of the four corners of the flange connecting piece are inwards sunken to form a plurality of mounting grooves; the number of the sleeves is multiple, the sleeves are correspondingly and detachably arranged on the multiple mounting grooves, and the interiors of the sleeves are hollow; the vibration device comprises a vibration part and a plurality of sleeves, the sleeves are arranged on the vibration part, the fasteners penetrate into the sleeves and are fixedly connected with the vibration part, interlocking pads are connected between every two adjacent fasteners and the corresponding sleeve, and the interlocking pads are used for locking one side face of each fastener. According to the high-temperature vibration locking device, the fastening connection mode of single thread pre-tightening is changed, so that a connecting piece can prevent a bolt from loosening and prevent a sealing part from losing efficacy under the environment of vibration and alternating working temperature, and higher reliability can be obtained.

Description

Technical Field

[0001] The present application belongs to the technical field of vibration anti-loosening, and in particular to a high-temperature vibration locking device. Background Art

[0002] When the vibrating machinery is running, the gas connectors are subjected to complex high-frequency reciprocating torsional vibrations and violent lateral vibrations. These vibrations gradually destroy the pre-tightening state of the threads and cause the bolts to loosen. Therefore, faults such as loose locking bolts and air leakage often occur. The task of solving this defect is very urgent.

[0003] In order to solve the problem of loose bolts and nuts, many improvements have been made in design and process over the years, but none of them have been able to fundamentally solve the problem of loose bolts and nuts. These include using fine threads, increasing the tightening torque of nuts, applying anti-loosening glue, adding washers, etc. Some methods have also brought new problems of difficulty in disassembly.

[0004] Under dynamic load conditions such as impact, vibration and temperature changes, the friction between threads alone cannot reliably prevent bolts from loosening. Even if the bolts are not loose, the deformation of the sealing position of the parts due to vibration and temperature changes will cause seal failure. Therefore, there is an urgent need for a locking device that can prevent loosening, resist vibration and absorb deformation to eliminate looseness and ensure the safety of connecting fasteners. Summary of the invention

[0005] In view of this, the present application aims to propose a high-temperature vibration locking device to solve the problem of loosening of nuts and bolts.

[0006] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0007] The present application provides a high temperature vibration locking device, comprising:

[0008] Vibrating parts;

[0009] A flange connection piece, wherein the flange connection piece is arranged on one side of the vibrating piece, and the four corner edges of the flange connection piece are all recessed inwards to form a plurality of mounting grooves;

[0010] There are multiple sleeves, which are detachably arranged on multiple mounting grooves, and the interior of the sleeves is hollow;

[0011] A fastener, the fastener passes through the sleeve and is fixedly connected to the vibrator, wherein an interlocking pad is connected between two adjacent fasteners and the corresponding sleeves, and the interlocking pad is used to lock one side of the fastener.

[0012] Furthermore, the sleeve is composed of two cavities with different inner diameters, and a transition section is provided between the two cavities with different inner diameters, and the end of the sleeve with a smaller inner diameter is provided in the installation groove;

[0013] The fastener is a hexagonal fastening bolt, the screw portion of the fastening bolt penetrates into the cavity and is threadedly connected with the vibrating member.

[0014] Furthermore, the interlocking gasket includes two interlocking rings and connecting ribs connected to the two interlocking rings, and the two interlocking rings are bent outward to form folded edges, and the folded edges are fitted to one side outer wall of the head of the fastening bolt.

[0015] Furthermore, a protruding pad is arranged between the flange connecting member and the vibrating member, a through hole is opened at the central position of the protruding pad, the protruding pad is close to one side of the vibrating member, and a protruding rib is formed around the through hole, and through holes for the fastening bolts to pass through are opened at the four corner edge positions of the protruding pad.

[0016] Furthermore, the fastening bolts, interlocking washers and sleeves are made of the same metal material;

[0017] The flange connector, protruding pad and vibrating member are made of the same or similar metal materials.

[0018] Furthermore, the radial dimension correlation function between the sleeve and the fastening bolt is:

[0019]

[0020] In the formula, σ a Indicates the tensile strength of the fastening bolt; σ c Indicates the tensile strength of the casing; D a Indicates the diameter of the fastening bolt; D b Indicates the inner diameter of the casing (the larger inner diameter of the casing); D c Indicates the outer diameter of the casing.

[0021] Furthermore, the axial dimension correlation function between the sleeve and the fastening bolt is:

[0022] δ a (L a -L0)Δt=1.05[δ c L b (Δt-50)+δ c L c (Δt-100)] (2)

[0023] In the formula, δ a Indicates the thermal expansion coefficient of the fastening bolt; δ c Indicates the thermal expansion coefficient of the casing; La Indicates the bolt length; L0 indicates the length of the bolt screwed into the vibrating part; L b Indicates the cavity length corresponding to the smaller inner diameter in the casing; L c Indicates the cavity length corresponding to the larger inner diameter of the casing.

[0024] Compared with the prior art, the high temperature vibration locking device described in this application has the following beneficial effects:

[0025] A high-temperature vibration locking device described in the present application solves the problem of fastener loosening through the vibration locking device. The device changes the fastening connection mode of single thread pre-tightening, so that the connecting parts can prevent bolts from loosening and sealing parts from failing in an environment of vibration and alternating working temperature, thereby achieving higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of a high-temperature vibration locking device described in an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the structure of the flange connection member described in an embodiment of the present application;

[0029] Figure 3 A cross-sectional view of the sleeve described in an embodiment of the present application;

[0030] Figure 4 This is a schematic diagram of the fastening bolts described in the embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of the interlocking pad structure described in an embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the protrusion pad structure described in an embodiment of the present application;

[0033] Figure 7 This is a detailed cross-sectional view of the protruding pad portion described in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. Vibrating part; 2. Flange connector; 21. Mounting groove; 3. Sleeve; 4. Fastening bolt; 5. Interlocking pad; 51. Interlocking ring; 52. Connecting rib; 53. Folding edge; 6. Protruding pad; 61. Through hole; 62. Protruding rib; 63. Through hole. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] See also Figures 1 to 5 As shown, this embodiment provides a high temperature vibration locking device, comprising:

[0039] Vibrating member 1;

[0040] A flange connection member 2, the flange connection member 2 is arranged on one side of the vibrating member 1, and the four corner edges of the flange connection member 2 are all recessed inwards to form a plurality of mounting grooves 21;

[0041] The sleeve 3 is multiple in number and is detachably arranged on the multiple mounting grooves 21, and the interior of the sleeve 3 is hollow;

[0042] The fasteners penetrate into the sleeve 3 and are fixedly connected to the vibrating member 1 , wherein an interlocking pad 5 is connected between two adjacent fasteners and the corresponding sleeves 3 , and the interlocking pad 5 is used to lock one side surface of the fasteners.

[0043] Specifically, in this embodiment, the sleeve 3 and the flange connector 2 are arranged to be detachably connected to improve the flexibility of the overall device. The internal structure of the sleeve 3 effectively absorbs the deformation of the connection component caused by vibration and uneven heating of parts. The sleeve 3, the flange connector 2 and the vibrating member 1 are fixedly connected by fasteners. The interlocking pad 5 and the fastener are mutually restrained to prevent the rotation of the thread caused by vibration, thereby effectively limiting the loosening of the fastener.

[0044] The present application solves the problem of fastener loosening through the vibration locking device. The device changes the fastening connection mode of single thread pre-tightening, so that the connecting parts can prevent the bolts from loosening and the sealing parts from failing in an environment of vibration and alternating working temperature, thereby achieving higher reliability.

[0045] In some embodiments, Figure 3 As shown, the sleeve 3 is composed of two cavities with different inner diameters, and a transition section is provided between the two cavities with different inner diameters. The end of the sleeve 3 with a smaller inner diameter is provided in the mounting groove 21;

[0046] like Figure 4 As shown, the fastener is a hexagonal fastening bolt 4 , the screw portion of the fastening bolt 4 penetrates into the cavity and is threadedly connected to the vibrator 1 .

[0047] Specifically, in this embodiment, the hexagonal fastening bolt 4 passes through the interlocking gasket 5, the sleeve 3, the flange connection part 2, and the protruding gasket 6, and is then fastened to the vibrating part 1 with a thread. The inner side of the sleeve 3 is composed of two cavities with different inner diameters, and the two cavities with different inner diameters are connected by a transition with a certain cone angle β. One end of the small inner diameter cavity of the sleeve 3 is in contact with the interlocking ring 51 of the interlocking gasket 5, and one end of the large diameter cavity of the sleeve 3 is in contact with the sleeve 3 mounting surface of the flange connection part 2.

[0048] In some embodiments, Figure 5 As shown, the interlocking pad 5 includes two interlocking rings 51 and connecting ribs 52 connected to the two interlocking rings 51 . The two interlocking rings 51 are bent outward to form a folded edge 53 . The folded edge 53 is attached to one side outer wall of the head of the fastening bolt 4 .

[0049] Specifically, in this embodiment, the interlocking pad 5 has a bendable folded edge 53 at the position where the hexagonal fastening bolt 4 is installed, and the protruding folded edge 53 of the interlocking pad 5 and one side of the head of the hexagonal fastening bolt 4 are locked with each other, and the other hexagonal fastening bolt 4 connected to the interlocking pad 5 is restrained to prevent the hexagonal fastening bolt 4 from rotating. Thus, the fastening bolt 4 is prevented from loosening.

[0050] In some embodiments, Figure 6 and Figure 7 As shown, a protruding pad 6 is arranged between the flange connecting member 2 and the vibrating member 1, a through hole 61 is opened at the central position of the protruding pad 6, a protruding rib is formed around the through hole 61 on one side of the protruding pad 6 close to the vibrating member 1, and through holes 63 for fastening bolts 4 to pass through are opened at the four corner edge positions of the protruding pad 6.

[0051] Specifically, in this embodiment, one side of the protruding pad 6 is flat, and the other side has a protruding rib, wherein the flat side of the protruding pad 6 is in contact with the flange connector 2 , and the side with the protruding rib is in contact with the vibration member 1 .

[0052] The protruding rib side of the protruding pad 6 absorbs the gap caused by the different deformation of the connecting parts of the flange connecting member 2 and the vibrating member 1 due to vibration and thermal deformation, thereby realizing reliable sealing of the liquid or gas in the pipeline.

[0053] In some embodiments, the fastening bolt 4, the interlocking washer 5, and the sleeve 3 are made of the same metal material;

[0054] The flange connector 2 , the protruding pad 6 and the vibrating member 1 are made of the same metal material or metal materials with similar properties.

[0055] In some embodiments, the radial dimension correlation function between the sleeve 3 and the fastening bolt 4 is:

[0056]

[0057] In the formula, δ a Indicates the tensile strength of the fastening bolt 4; σ c Indicates the tensile strength of the casing 3; D a Indicates the diameter of the fastening bolt; D b Indicates the inner diameter of the casing 3 (the larger inner diameter of the casing); D c Indicates the outer diameter of the casing 3;

[0058] The axial dimension correlation function between the sleeve 3 and the fastening bolt 4 is:

[0059] δ a (L a -L0)Δt=1.05[δ c L b (Δt-50)+δ c L c (Δt-100)] (2)

[0060] In the formula, δ a Indicates the thermal expansion coefficient of the fastening bolt; δ c Indicates the thermal expansion coefficient of the casing; L a Indicates the bolt length; L0 indicates the length of the bolt screwed into the vibrating part; L b Indicates the cavity length corresponding to the smaller inner diameter in the casing; L c Indicates the cavity length corresponding to the larger inner diameter of the casing.

[0061] Specifically, in this embodiment, by constructing a radial dimension correlation function between the sleeve 3 and the fastening bolt 4 and an axial dimension correlation function between the sleeve 3 and the fastening bolt 4, the relationship between the sleeve 3 and the fastening bolt 4 is established. According to the bolt diameter and the use environment, sleeves 3 with different inner diameters are selected to ensure strength and a certain elastic absorption capacity when bearing the working load; by adding an interlocking pad 5 at the contact position between the bolt head and the sleeve 3, an elastic absorption effect can be provided. During vibration or thermal expansion, the compression and resilience of the interlocking pad 5 can effectively absorb the axial displacement and reduce the stress on the bolt and the connecting part.

[0062] 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 replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

[0063] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A high temperature vibration locking device, characterized in that: include: Vibrating parts; A flange connection piece, wherein the flange connection piece is arranged on one side of the vibrating piece, and the four corner edges of the flange connection piece are all recessed inwards to form a plurality of mounting grooves; There are multiple sleeves, which are detachably arranged on multiple mounting grooves, and the interior of the sleeves is hollow; A fastener, the fastener passes through the sleeve and is fixedly connected to the vibrator, wherein an interlocking pad is connected between two adjacent fasteners and the corresponding sleeves, and the interlocking pad is used to lock one side of the fastener.

2. A high temperature vibration locking device according to claim 1, characterized in that: The sleeve is composed of two cavities with different inner diameters, and a transition section is provided between the two cavities with different inner diameters. The end of the sleeve with a smaller inner diameter is provided in the installation groove. The fastener is a hexagonal fastening bolt, the screw portion of the fastening bolt penetrates into the cavity and is threadedly connected with the vibrating member.

3. A high temperature vibration locking device according to claim 2, characterized in that: The interlocking pad includes two interlocking rings and connecting ribs connected to the two interlocking rings. The two interlocking rings are bent outward to form folded edges, and the folded edges are attached to one side outer wall of the head of the fastening bolt.

4. A high temperature vibration locking device according to claim 2, characterized in that: A protruding pad is arranged between the flange connecting part and the vibrating part, a through hole is opened at the central position of the protruding pad, the protruding pad is close to one side of the vibrating part, and a protruding rib is formed around the through hole, and through holes for the fastening bolts to pass through are opened at the four corner edge positions of the protruding pad.

5. A high temperature vibration locking device according to claim 2, characterized in that: The fastening bolts, interlocking washers and sleeves are made of the same metal material; The flange connector, protruding pad and vibrating member are made of the same or similar metal materials.

6. A high temperature vibration locking device according to claim 2, characterized in that: The radial dimension correlation function between the sleeve and the fastening bolt is: In the formula, σ a Indicates the tensile strength of the fastening bolt; σ c Indicates the tensile strength of the casing; D a Indicates the diameter of the fastening bolt; D b Indicates the inner diameter of the casing (the larger inner diameter of the casing); D c Indicates the outer diameter of the casing.

7. A high temperature vibration locking device according to claim 2, characterized in that: The axial dimension correlation function between the sleeve and the fastening bolt is: d a (L a -L0)Δt=1.05[δ c L b (Δt-50)+δ c L c (Δt-100)] (2) In the formula, δ a Indicates the thermal expansion coefficient of the fastening bolt; δ c Indicates the thermal expansion coefficient of the casing; L a Indicates the bolt length; L0 indicates the length of the bolt screwed into the vibrating part; L b Indicates the cavity length corresponding to the smaller inner diameter in the casing; L c Indicates the cavity length corresponding to the larger inner diameter of the casing.

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