Anti-loose anti-seismic lead screw connecting device

Abstract

The utility model relates to the technical field of lead screw connection, in particular to an anti-loosening anti-vibration lead screw connecting device. According to the technical scheme, the double-screw bolt connecting device comprises a double-screw bolt connecting cylinder and further comprises a pair of nut fixing pieces, and the two nut fixing pieces are screwed with two screw rods to be connected in a threaded mode respectively; and the double-folded self-locking gaskets comprise a first self-locking gasket fixed at one end of the nut fixing piece and a second self-locking gasket fixed at the end part of the stud connecting cylinder. According to the utility model, the nut fixing piece and the double-folding self-locking gasket are additionally arranged, so that the connection of the screw rod can be locked, and the problem of looseness caused by vibration in long-time use is prevented; the limiting disc is arranged at the middle section of the stud connecting cylinder, so that the lead screw can be prevented from being excessively screwed; through the design of the thread sleeve and the anti-falling disc, the nut fixing piece can be connected to the end of the stud connecting cylinder in a non-connection state, so that the nut fixing piece and the stud connecting cylinder can be placed and carried along, and the nut fixing piece and the stud connecting cylinder can be conveniently taken and used while being prevented from being lost.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rod connection, in particular to an anti-loosening and anti-vibration screw rod connection device. Background Art

[0002] In places with super high space such as large shopping malls, central air conditioning system duct fans and flat ceilings are often installed, which are supported and installed by accessories such as hangers, brackets, keels, etc. Among them, the hangers are generally fixed and installed with full screw rods or half screw rods, and the screw rods need to be connected continuously.

[0003] At present, screw rods are usually connected by welding, connectors, etc., the former has poor durability of the welding interface, and the latter is easy to loosen due to vibration in long-term use. Therefore, the utility model proposes an anti-loosening and anti-vibration screw rod connection device. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes an anti-loosening and anti-vibration screw rod connection device.

[0005] The technical solution of the utility model: an anti-loosening and anti-vibration screw rod connection device, including a stud connecting tube, including: a pair of nut fixings, the two nut fixings are respectively screwed with two screw rods to be connected; a pair of double-stacked self-locking washers, the double-stacked self-locking washers include a first self-locking washer fixed to one end of the nut fixing and a second self-locking washer fixed to the end of the stud connecting tube.

[0006] Optionally, the first self-locking washer and the second self-locking washer are provided with opposite serration structures.

[0007] Optionally, a triangular hand-tightening piece is fixed to the outer wall of the nut fixing piece to facilitate the rotation of the nut fixing piece.

[0008] Optionally, a semicircular butterfly hand-tightening piece is included which is fixed to the outer wall of the stud connecting tube to facilitate the rotation of the stud connecting tube.

[0009] Optionally, it includes a threaded sleeve rotatably sleeved on the end of the stud connection tube, the threaded sleeve is provided with an internal threaded portion, and the outer annular surface of the first self-locking washer is provided with an external threaded portion matching the internal threaded portion.

[0010] Optionally, it includes an anti-slip disk fixedly sleeved on the outer wall of the stud connecting tube to prevent the threaded sleeve from slipping off.

[0011] Optionally, a middle section of the stud connecting tube is provided with a limit plate to prevent the screw rod from being over-tightened.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The present application can lock the connection of the screw rod by adding nut fixings and double-stacked self-locking washers to prevent loosening due to vibration during long-term use, thereby reducing subsequent maintenance and replacement work;

[0014] Furthermore, by arranging a limit plate in the middle section of the stud connecting tube, the screw rod can be prevented from being over-tightened; through the design of the threaded sleeve and the anti-slip plate, the nut fixing can be connected to the end of the stud connecting tube in a non-connected state, so that the nut fixing and the stud connecting tube can be placed and carried together, preventing loss while being convenient for access. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the separated structure of the anti-loosening and anti-vibration screw rod connection device in Example 1;

[0016] Figure 2 for Figure 1 Schematic diagram of the main viewing direction structure;

[0017] Figure 3 for Figure 2 A cross-sectional view of the middle stud connection barrel;

[0018] Figure 4 This is a schematic diagram of the connection between the threaded sleeve, the anti-slip disc, the nut fixing piece, and the stud connecting tube in the second embodiment. Figure numerals: 1, nut fixing piece; 11, first nut fixing piece; 12, second nut fixing piece;

[0019] 2. Stud connection tube; 21. Limit plate;

[0020] 3. Double stacked self-locking washer; 31. First self-locking washer; 32. Second self-locking washer;

[0021] 4. Triangular hand-tightened parts;

[0022] 5. Semi-circular butterfly piece hand-tightened parts;

[0023] 6. Screw rod; 61. First screw rod; 62. Second screw rod;

[0024] 7. Screw sleeve;

[0025] 8. Prevent the disc from slipping off. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] like Figure 1-3 As shown, the utility model proposes an anti-loosening and anti-vibration screw rod connection device, including a stud connecting tube 2, both ends of which are provided with internal threads, which are respectively screwed with the end threads of two screw rods 6, and the two screw rods 6 are respectively represented by a first screw rod 61 and a second screw rod 62.

[0031] In this embodiment, the anti-seismic screw rod connection device includes a pair of nut fixings 1 and a pair of double-stacked self-locking washers 3, and the two nut fixings 1 are respectively represented by a first nut fixing 11 and a second nut fixing 12. The double-stacked self-locking washer 3 includes a first self-locking washer 31 fixed to one end of the nut fixing 1 and a second self-locking washer 32 fixed to the end of the stud connection tube 2. The second self-locking washer 32 and the first self-locking washer 31 are reversely serrated to achieve locking and preventing loosening. The locking characteristics of the self-locking washers are prior art and are not described here.

[0032] Furthermore, the anti-seismic screw rod connection device further comprises a pair of triangular hand-tightening members 4 symmetrically fixed to the outer wall of the nut fixing member 1 to facilitate the rotation of the nut fixing member 1;

[0033] And, the anti-seismic screw rod connection device comprises a pair of semicircular butterfly hand-tightening members 5 symmetrically fixed to the outer wall of the stud connection tube 2 to facilitate the rotation of the stud connection tube 2;

[0034] Furthermore, Figure 3 As shown, the middle section of the stud connection tube 2 is provided with a limit plate 21 to prevent the screw rod 6 from being over-tightened.

[0035] The working principle of this embodiment is: by using the two ends of the stud connection tube 2 to connect the two screw rods 6 respectively, so as to achieve the connection of the two screw rods 6, and then using the locking function of the double-stacked self-locking washers 3 to improve the connection effect, and prevent the loosening problem caused by vibration during long-term use;

[0036] In practical applications, it is divided into off-site installation and on-site installation:

[0037] During off-site installation, the first nut fixing member 11 is screwed in from the bottom end of the first screw rod 61, and the bottom end of the first screw rod 61 is screwed from the top end of the stud connection tube 2 until it contacts the limit plate 21 of the middle section. The second nut fixing member 12 is screwed in from the top end of the second screw rod 62, and the top end of the second screw rod 62 is screwed from the bottom end of the stud connection tube 2 until it contacts the limit plate 21 of the middle section, and then the first nut fixing member 11 and the second nut fixing member 12 are screwed respectively until they cannot be screwed further;

[0038] During on-site installation, the maintenance of the screw rod is often targeted. For example, if there is a problem such as rust at the screw connection, it is necessary to cut and grind the rusted part and then reconnect it. After cutting and grinding off the rusted part, install the first nut fixing part 11 and the second nut fixing part 12 respectively according to the above steps, then screw the stud connecting tube 2 to the first screw rod 61, and then screw it in the opposite direction to move the stud connecting tube 2 down and connect it to the second screw rod 62. Since the rusted part of the screw rod 6 is cut off, there is a distance between the two screw rods 6. It is only necessary to ensure that the distance is controlled within half the length of the stud connecting tube 2 to ensure the stability of the connection. Finally, screw the first nut fixing part 11 and the second nut fixing part 12 according to the above-mentioned off-site installation method to lock and reinforce them.

[0039] Based on the above, the present application can be applied to air conditioning duct fan brackets, suspended motor brackets, new installation or maintenance of ceiling brackets, decoration engineering projects, etc., which are not listed here one by one.

[0040] And in summary of the above, it can be known that by adding the nut fixing part 1 and the double-stacked self-locking washer 3, the connection of the screw rod 6 can be locked to prevent the problem of loosening due to vibration during long-term use, thereby reducing subsequent maintenance, replacement and other work.

[0041] Embodiment 2

[0042] like Figure 1-4As shown, the utility model proposes an anti-loosening and anti-vibration screw rod connection device, including a stud connection tube 2, both ends of which are provided with internal threads, which are respectively screwed with the end threads of two screw rods 6, and the two screw rods 6 are respectively represented by a first screw rod 61 and a second screw rod 62. Specifically, the anti-vibration screw rod connection device includes a pair of nut fixings 1 and a pair of double-stacked self-locking washers 3, and the two nut fixings 1 are respectively represented by a first nut fixing 11 and a second nut fixing 12. The double-stacked self-locking washer 3 includes a first self-locking washer 31 fixed to one end of the nut fixing 1 and a second self-locking washer 32 fixed to the end of the stud connection tube 2, and the second self-locking washer 32 is reversely serrated with the first self-locking washer 31 to achieve locking and anti-loosening; including a pair of triangular hand-tightening parts 4 symmetrically fixed to the outer wall of the nut fixing 1 to facilitate the rotation of the nut fixing 1. It includes a pair of semicircular butterfly hand-tightening parts 5 symmetrically fixed to the outer wall of the stud connection tube 2 to facilitate the rotation of the stud connection tube 2. As shown Figure 3 As shown, the middle section of the stud connection tube 2 is provided with a limit plate 21 to prevent the screw rod 6 from being over-tightened.

[0043] like Figure 4 As shown, compared with the first embodiment, the anti-seismic screw rod connection device of this embodiment further includes screw sleeves 7 rotatably sleeved at both ends of the stud connection tube 2 and anti-slip discs 8 fixedly sleeved at both ends of the outer wall of the stud connection tube 2 to prevent the screw sleeve 7 from slipping off. An internal threaded portion is provided at the end of the screw sleeve 7, and an external threaded portion matching the internal threaded portion is provided on the outer annular surface of the first self-locking washer 31.

[0044] The working principle of this embodiment is as follows: in a non-connected state, the nut fixing member 1 can be placed on the end of the stud connecting tube 2, and then the screw sleeve 7 is rotated to make the screw sleeve 7 and the first self-locking washer 31 threadedly engaged, so that the nut fixing member 1 can be limited at the end of the stud connecting tube 2, that is, the nut fixing member 1 and the stud connecting tube 2 become an integral structure that can be taken and carried at the same time, which prevents the loss of individual structures while also facilitating access.

[0045] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An anti-loosening and anti-vibration screw rod connection device, comprising a stud connection cylinder (2), characterized in that: include: A pair of nut fixing members (1), wherein the two nut fixing members (1) are respectively threadedly engaged with two screw rods (6) to be connected; A pair of double-stacked self-locking washers (3), the double-stacked self-locking washers (3) comprising a first self-locking washer (31) fixed to one end of a nut fixing member (1) and a second self-locking washer (32) fixed to the end of a stud connection tube (2).

2. The anti-loosening and anti-vibration screw rod connection device according to claim 1, characterized in that: The first self-locking washer (31) and the second self-locking washer (32) are provided with opposite serration structures.

3. The anti-loosening and anti-vibration screw rod connection device according to claim 2, characterized in that: It comprises a triangular hand-tightening piece (4) fixed to the outer wall of the nut fixing piece (1) to facilitate the rotation of the nut fixing piece (1).

4. The anti-loosening and anti-vibration screw rod connection device according to claim 3, characterized in that: It comprises a semicircular butterfly hand-tightening piece (5) fixed to the outer wall of the stud connection tube (2) to facilitate the rotation of the stud connection tube (2).

5. The anti-loosening and anti-vibration screw rod connection device according to claim 4, characterized in that: It comprises a screw sleeve (7) rotatably sleeved on the end of a stud connection tube (2), the screw sleeve (7) is provided with an internal threaded portion, and the outer ring surface of the first self-locking washer (31) is provided with an external threaded portion matching the internal threaded portion.

6. The anti-loosening and anti-vibration screw rod connection device according to claim 5, characterized in that: It comprises an anti-slip disk (8) which is fixedly sleeved on the outer wall of the stud connection tube (2) to prevent the screw sleeve (7) from slipping off.

7. The anti-loosening and anti-vibration screw rod connection device according to claim 6, characterized in that: The middle section of the stud connection tube (2) is provided with a limit plate (21) for preventing the screw rod (6) from being over-twisted.

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