Synchronous Adjustable Expansion Joint

Abstract

The present invention discloses a synchronously adjustable expansion joint, and relates to the technical field of expansion joints. The present invention comprises a first flange, a second flange, a bellows, three threaded rods and an adjustment assembly, three lugs are fixed to the circumferential side surfaces of the first flange and the second flange, a first through hole and a second through hole are respectively provided on the lugs on the first flange and the second flange, a circumferential side surface of one end of the threaded rod is fixed in the first through hole by a set of nuts, and the other end of the threaded rod is fixed in the second through hole by a connecting piece, the connecting piece comprises an internal threaded sleeve, the internal threaded sleeve is threadedly matched with the threaded rod, and a gear is fixed to the circumferential side surface of one end of the internal threaded sleeve. The present invention can simultaneously drive the internal threaded sleeves on the three threaded rods to rotate by rotating a swivel, and the internal threaded sleeves can slide up and down along the threaded rod, thereby realizing the adjustment of the position between the first flange and the second flange, and solving the problem that the existing expansion joint is inconvenient to adjust the length.

Description

Technical Field

[0001] The invention belongs to the technical field of expansion joints, and in particular relates to an expansion joint. Background Art

[0002] Existing expansion joints mostly use a screw and a nut to fix two flanges, install a bellows between the two flanges, and use a screw and a nut to adjust the distance between the two flanges. However, in order to ensure stability, more than three screws and nuts are often used on the expansion joint. In order to adjust the length of the expansion joint, the nuts need to be rotated at the same time, which is inconvenient for the staff to operate. Summary of the invention

[0003] The object of the present invention is to provide a synchronously adjustable expansion joint, which can simultaneously drive the internal threaded sleeves on three threaded rods to rotate by rotating a swivel, and the internal threaded sleeves can slide up and down along the threaded rods, thereby realizing the adjustment of the position between the first flange and the second flange, solving the problem that the existing expansion joint is inconvenient to adjust the length.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a synchronously adjustable expansion joint, comprising a first flange, a second flange, a bellows, three threaded rods and an adjusting assembly, wherein three lugs are fixed to the circumferential side surfaces of the first flange and the second flange, and the lugs on the first flange and the second flange are respectively provided with a first through hole and a second through hole, and the circumferential side surface of one end of the threaded rod is fixed in the first through hole by a set of nuts;

[0006] The other end of the threaded rod is fixed in the second through hole through a connecting piece;

[0007] The connecting piece comprises an internal thread sleeve, the internal thread sleeve is threadably matched with the threaded rod, a gear is fixed to the circumferential side surface of one end of the internal thread sleeve, and a hexagonal sleeve is fixed to the circumferential side surface of the other end of the internal thread sleeve;

[0008] The internal thread sleeve is threadedly connected to the threaded rod, and the gear and the hexagonal sleeve are respectively located on the outer side and the inner side of the second flange;

[0009] The adjustment assembly includes an inner gear sleeve and a mounting plate;

[0010] A plurality of supporting edges are fixed to the side surface of the second flange, the mounting plate is fixed to a surface of the supporting edge by screws, a fixing ring is fixed to a surface of the mounting plate away from the supporting edge, and an annular sliding groove is provided on the inner wall of the fixing ring;

[0011] An annular slider is fixed to the circumferential side of the inner gear sleeve, and the annular slider is located inside the annular groove and slidably cooperates with the annular groove. The inner gear sleeve is opposite to the gear and meshes with the gear. A rotating ring is fixed to a surface of the inner gear sleeve away from the fixed ring.

[0012] Furthermore, the outer diameter of the internal threaded sleeve is the same as the inner diameter of the second through hole, and the distance between the gear and the hexagonal sleeve is the same as the thickness of the second flange.

[0013] Furthermore, the inner diameter of the hexagonal sleeve is the same as the outer diameter of the internal threaded sleeve, a mounting hole is provided on the peripheral side of the hexagonal sleeve, and the hexagonal sleeve is fixed to the internal threaded sleeve by screws or welding.

[0014] Furthermore, the inner diameter of the rotating ring is the same as the inner diameter of the inner gear sleeve, and the outer diameter of the rotating ring is the same as the outer diameter of the fixed ring.

[0015] Furthermore, the three ears on the first flange and the second flange are distributed in a ring shape with the same intervals, and the first through hole is concentrically arranged with the second through hole.

[0016] Furthermore, the threaded rod is loosely matched with the first through hole, and a group of nuts are all threadedly connected to the threaded rod and are respectively located on both sides of the first flange.

[0017] Furthermore, the bellows is fixed between the first flange and the second flange, and the bellows is arranged concentrically with the first flange.

[0018] Furthermore, the cross section of the annular sliding groove is an arc-shaped structure, a rectangular structure, a dovetail-shaped structure, a convex-shaped structure, or a trapezoidal structure.

[0019] The present invention has the following beneficial effects:

[0020] The present invention can simultaneously drive the internal threaded sleeves on three threaded rods to rotate by rotating the swivel, and the internal threaded sleeves can slide up and down along the threaded rods, so as to adjust the position between the first flange and the second flange. Compared with the adjusting bolts of the existing expansion joints, the present invention is convenient for users to adjust and operate. At the same time, when installing and docking, the length of the expansion joint can be shortened in advance, and it can be extended again after the centering is completed, which is convenient for users to install.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the synchronously adjustable expansion joint of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure from a bird's-eye view;

[0025] Figure 3 for Figure 2 Structural cross-section view at AA in the middle;

[0026] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0027] Figure 5 It is a schematic diagram of the structure of the first flange, the second flange and the bellows;

[0028] Figure 6 It is a structural schematic diagram of a threaded rod;

[0029] Figure 7 is a structural schematic diagram of a connecting piece;

[0030] Figure 8 It is a structural schematic diagram of the internal gear sleeve;

[0031] Fig. 9 is a schematic diagram of the structure of the fixed ring;

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1-first flange, 2-second flange, 3-bellows, 4-threaded rod, 5-adjustment assembly, 6-connector, 101-support ear, 102-first through hole, 201-second through hole, 202-support edge, 401-nut, 501-inner gear sleeve, 502-mounting plate, 503-fixing ring, 504-annular slide groove, 505-annular slider, 506-swivel, 601-inner threaded sleeve, 602-gear, 603-hexagonal sleeve, 604-mounting hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-9 As shown, the present invention is a synchronously adjustable expansion joint, comprising a first flange 1, a second flange 2, a bellows 3, three threaded rods 4 and an adjusting assembly 5, three lugs 101 are fixed to the circumferential sides of the first flange 1 and the second flange 2, the lugs 101 on the first flange 1 and the second flange 2 are respectively provided with a first through hole 102 and a second through hole 201, and a circumferential side surface of one end of the threaded rod 4 is fixed in the first through hole 102 by a set of nuts 401;

[0036] The other end of the threaded rod 4 is fixed in the second through hole 201 through a connecting piece 6;

[0037] The connecting member 6 includes an internal thread sleeve 601, which is threadedly matched with the threaded rod 4, a gear 602 is fixed to the side surface of one end of the internal thread sleeve 601, and a hexagonal sleeve 603 is fixed to the side surface of the other end of the internal thread sleeve 601;

[0038] The internal thread sleeve 601 is threadedly connected to the threaded rod 4, and the gear 602 and the hexagonal sleeve 603 are respectively located on the outer side and the inner side of the second flange 2;

[0039] The adjustment assembly 5 includes an inner gear sleeve 501 and a mounting plate 502;

[0040] A plurality of supporting edges 202 are fixed to the side surface of the second flange 2, and a mounting plate 502 is fixed to a surface of the supporting edge 202 by screws. A fixing ring 503 is fixed to a surface of the mounting plate 502 away from the supporting edge 202, and an annular sliding groove 504 is provided on the inner wall of the fixing ring 503;

[0041] An annular slider 505 is fixed to the circumferential side of the inner gear sleeve 501 , and the annular slider 505 is located inside the annular groove 504 and slidably cooperates with the annular groove 504 . The inner gear sleeve 501 is opposite to the gear 602 and meshes with the gear 602 . A rotating ring 506 is fixed to a surface of the inner gear sleeve 501 away from the fixed ring 503 .

[0042] Among them Figure 4 As shown, the outer diameter of the internal thread sleeve 601 is the same as the inner diameter of the second through hole 201 , and the distance between the gear 602 and the hexagonal sleeve 603 is the same as the thickness of the second flange 2 .

[0043] Among them Figure 6-7As shown, the inner diameter of the hexagonal sleeve 603 is the same as the outer diameter of the internal thread sleeve 601, and a mounting hole 604 is provided on the side surface of the hexagonal sleeve 603. The hexagonal sleeve 603 is fixed to the internal thread sleeve 601 by screws or welding.

[0044] Among them Figure 3 As shown, the inner diameter of the rotating ring 506 is the same as the inner diameter of the inner gear sleeve 501 , and the outer diameter of the rotating ring 506 is the same as the outer diameter of the fixed ring 503 .

[0045] Among them Figure 5 As shown, the three ears 101 on the first flange 1 and the second flange 2 are all distributed in a ring shape with the same intervals, and the first through hole 102 and the second through hole 201 are concentrically arranged.

[0046] Among them Figure 1 and Figure 3 As shown, the threaded rod 4 is loosely matched with the first through hole 102 , and a set of nuts 401 are all threadedly connected to the threaded rod 4 and are respectively located on both sides of the first flange 1 .

[0047] Among them Figure 1 , Figure 3 and Figure 5 As shown, the bellows 3 is fixed between the first flange 1 and the second flange 2 , and the bellows 3 is arranged concentrically with the first flange 1 .

[0048] The cross section of the annular sliding groove 504 is an arc-shaped structure, a rectangular structure, a dovetail-shaped structure, a convex-shaped structure, or a trapezoidal structure.

[0049] A specific application of this embodiment is: rotating the swivel ring 506 can drive the inner gear sleeve 501 to rotate along the fixed ring 503. When the inner gear sleeve 501 rotates, it can simultaneously drive the gears 602 on the three threaded rods 4 to rotate, thereby driving the inner thread sleeve 601 to rotate, thereby realizing the adjustment of the position between the first flange 1 and the second flange 2.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A synchronously adjustable expansion joint, comprising a first flange (1), a second flange (2), a bellows (3) and three threaded rods (4), wherein three lugs (101) are fixed to the circumferential side surfaces of the first flange (1) and the second flange (2), and the lugs (101) on the first flange (1) and the second flange (2) are respectively provided with a first through hole (102) and a second through hole (201), and the circumferential side surface of one end of the threaded rod (4) is fixed in the first through hole (102) by a set of nuts (401), characterized in that: Also included is a regulating component (5); The other end of the threaded rod (4) is fixed in the second through hole (201) via a connecting piece (6); The connecting member (6) comprises an internal thread sleeve (601), the internal thread sleeve (601) being threadably matched with the threaded rod (4), a gear (602) being fixed to a circumferential side surface of one end of the internal thread sleeve (601), and a hexagonal sleeve (603) being fixed to a circumferential side surface of the other end of the internal thread sleeve (601); The internal thread sleeve (601) is threadedly connected to the threaded rod (4), and the gear (602) and the hexagonal sleeve (603) are respectively located on the outer side and the inner side of the second flange (2); The adjustment assembly (5) comprises an inner gear sleeve (501) and a mounting plate (502); A plurality of support edges (202) are fixed to the side surface of the second flange (2); the mounting plate (502) is fixed to a surface of the support edge (202) by means of screws; a fixing ring (503) is fixed to a surface of the mounting plate (502) away from the support edge (202); an annular sliding groove (504) is provided on the inner wall of the fixing ring (503); An annular slider (505) is fixed on the peripheral side of the inner gear sleeve (501); the annular slider (505) is located inside the annular slide groove (504) and slidably cooperates with the annular slide groove (504); the inner gear sleeve (501) is opposite to the gear (602) in position and meshes with the gear (602); a rotating ring (506) is fixed on a surface of the inner gear sleeve (501) away from the fixed ring (503).

2. The synchronously adjustable expansion joint according to claim 1, characterized in that: The outer diameter of the internal threaded sleeve (601) is the same as the inner diameter of the second through hole (201), and the distance between the gear (602) and the hexagonal sleeve (603) is the same as the thickness of the second flange (2).

3. The synchronously adjustable expansion joint according to claim 1, characterized in that: The inner diameter of the hexagonal sleeve (603) is the same as the outer diameter of the internal thread sleeve (601); a mounting hole (604) is provided on the circumferential side of the hexagonal sleeve (603); and the hexagonal sleeve (603) is fixed to the internal thread sleeve (601) by means of screws or welding.

4. The synchronously adjustable expansion joint according to claim 1, characterized in that: The inner diameter of the rotating ring (506) is the same as the inner diameter of the inner gear sleeve (501), and the outer diameter of the rotating ring (506) is the same as the outer diameter of the fixed ring (503).

5. The synchronously adjustable expansion joint according to claim 1, characterized in that: The three ears (101) on the first flange (1) and the second flange (2) are all distributed in a ring shape at equal intervals, and the first through hole (102) and the second through hole (201) are arranged concentrically.

6. The synchronously adjustable expansion joint according to claim 1, characterized in that: The threaded rod (4) is clearance-matched with the first through hole (102), and a group of nuts (401) are all threadedly connected to the threaded rod (4) and are respectively located on both sides of the first flange (1).

7. The synchronously adjustable expansion joint according to claim 1, characterized in that: The bellows (3) is fixed between the first flange (1) and the second flange (2), and the bellows (3) is arranged concentrically with the first flange (1).

8. The synchronously adjustable expansion joint according to claim 1, characterized in that: The cross section of the annular sliding groove (504) is an arc-shaped structure, a rectangular structure, a dovetail-shaped structure, a convex-shaped structure, or a trapezoidal structure.

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