Chain bolt with anti-reverse structure

Abstract

The utility model relates to the technical field of chain bolts, in particular to a chain bolt with an anti-reverse structure, which comprises a connector and a screw arranged on the connector, a positioning chute arranged along the axial direction is arranged on the screw, and the length of the positioning chute is equal to that of the screw. A nut is screwed on the screw rod; the device further comprises a first positioning piece, a second positioning piece and an elastic piece. The first positioning piece and the second positioning piece are both connected to the screw rod in a sleeving mode, and the first positioning piece and the second positioning piece can move in the axial direction of the screw rod; by arranging the first positioning piece, the second positioning piece and the elastic piece, the elastic piece acts on the nut screwed on the screw rod through elastic force, so that the threaded connection part of the nut and the screw rod can be extruded to achieve tight connection, and therefore the phenomena of loosening and thread slipping caused by repeated disassembly or equipment vibration are reduced, and the effect that the nut is prevented from being reversely separated from the screw rod is achieved; and the use safety of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain bolt technical field, specifically is chain bolt with prevent reverse structure. BACKGROUND

[0002] Bolt is mechanical part, and the fastener of cylindrical shape with screw thread that is equipped with nut, is composed of two parts of head and screw rod (cylinder with external thread), needs to cooperate with nut, is used for fastening connection two parts with through hole.

[0003] The bolt is widely used in chain, and the screw rod and nut on the bolt will be abraded due to the vibration generated by long-term operation of equipment and the disassembly of the bolt for chain maintenance, and serious silk will appear, thereby causing unstable chain installation and having the security risk of equipment damage.

[0004] Therefore, we propose chain bolt with anti-reverse structure. CONTENT OF THE UTILITY MODEL

[0005] One technical problem to be solved by the application is that the screw rod and nut on the bolt will be abraded due to the vibration generated by long-term operation of equipment and the disassembly of the bolt for chain maintenance, and serious silk will appear, thereby causing unstable chain installation and having the security risk of equipment damage.

[0006] To solve the above technical problem, the application provides chain bolt with anti-reverse structure, which comprises a connecting head, a screw rod arranged on the connecting head, a positioning sliding groove arranged on the screw rod in the axial direction, and a nut threadedly connected to the screw rod.

[0007] In some embodiments, the first positioning member comprises a connecting plate sleeved on the screw rod, and a circular hole larger than the diameter of the screw rod is arranged on the connecting plate.

[0008] In some embodiments, a plurality of insertion holes are arranged on the nut, and a positioning rod adapted to the insertion holes is arranged on the connecting plate and inserted into the insertion holes.

[0009] In some embodiments, the insertion end of the positioning rod is provided with a chamfered surface.

[0010] In some embodiments, the second positioning member comprises a sleeve plate and a positioning sheet embedded in the positioning sliding groove, the positioning sheet is arranged in the inner ring of the sleeve plate, and the positioning sheet is slidable in the positioning sliding groove.

[0011] In some embodiments, the elastic member comprises a spring sleeved outside the screw rod, and the two ends of the spring are connected with the sleeve plate and the connecting plate respectively.

[0012] In some embodiments, the connecting head is provided with an anti-skid rubber ring on the side facing the screw rod.

[0013] In some embodiments, the sleeve plate is provided with a protective rubber ring on the side facing the connecting head.

[0014] The utility model at least has the following beneficial effects:

[0015] 1. By setting up first positioning member, second positioning member and elastic member, the elastic member is used on the nut of the screw rod through the elastic force, the nut and the screw thread connection part of the screw rod are extruded to realize the close connection, thereby reducing the loosening and silk phenomenon caused by multiple disassembly or equipment vibration, having the effect of preventing the nut from being reversed and separated from the screw rod, and improving the equipment use safety;

[0016] 2. By setting up anti-skid rubber ring and protective rubber ring, the anti-skid rubber ring and the protective rubber ring can be extruded and deformed, not only improve the friction force when the bolt is connected, but also have the protection function of reducing wear, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the partial hidden structure schematic diagram of the utility model;

[0019] Figure 3 It is the partial split structure schematic diagram of the utility model;

[0020] Figure 4 It is the explosion structure schematic diagram of the utility model;

[0021] Figure 5 It is the structure schematic diagram of the embodiment 2 of the utility model.

[0022] In the drawing: 1, connecting head; 2, screw rod; 3, nut; 4, positioning sliding groove; 5, first positioning member; 6, anti-skid rubber ring; 7, second positioning member; 8, elastic member; 9, sleeve plate; 10, spring; 11, connecting plate; 12, positioning sheet; 13, positioning rod; 14, chamfered surface; 15, plug-in hole; 16, protective rubber ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1 to 4 The utility model provides technical scheme: chain bolt with prevent reverse structure, including connector 1, be located connector 1 on setting has screw rod 2, be equipped with the positioning sliding slot 4 along the axial direction and be set up on screw rod 2, the length of positioning sliding slot 4 is equal with the length of screw rod 2, be located screw rod 2 on rotation and connect have nut 3, still including one positioning piece 5, two positioning piece 7 and elastic part 8, one positioning piece 5 and two positioning piece 7 all sleeve joint on screw rod 2, one positioning piece 5 and two positioning piece 7 can along screw rod 2 along the axial direction removal, one positioning piece 5 and nut 3 are pasted, elastic part 8 is set up between one positioning piece 5 and two positioning piece 7, for making one positioning piece 5 and nut 3 tight connection.

[0026] When installing, one positioning piece 5, two positioning piece 7, elastic part 8 and nut 3 are all taken down, make screw rod 2 insert and connect on chain connecting hole, then install two positioning piece 7, elastic part 8, one positioning piece 5 and nut 3 in proper order, when screwing nut 3, nut 3 pushes one positioning piece 5 and extrudes elastic part 8, furthermore, elastic part 8 elastic force acts on two positioning piece 7, two positioning piece 7 are tightly attached to the surface of chain, when screwing nut 3, because the elastic force of elastic part 8 also acts on one positioning piece 5, furthermore, nut 3 and the thread connection part of screw rod 2 are tightly pasted, thereby preventing reverse and anti-loose functions.

[0027] In this embodiment, as Figures 1 to 4 shown, one positioning piece 5 includes connecting plate 11 sleeve joint on screw rod 2, the circular hole greater than the diameter of screw rod 2 is set up on connecting plate 11, a plurality of insert holes 15 are set up on nut 3, positioning rod 13 adapted with insert hole 15 is set up on connecting plate 11, positioning rod 13 is inserted in insert hole 15, two positioning piece 7 includes sleeve plate 9 and positioning sheet 12 embedded in positioning sliding slot 4, positioning sheet 12 is set in the inner ring of sleeve plate 9, positioning sheet 12 can slide in positioning sliding slot 4, elastic part 8 includes spring 10 ringed on the outside of screw rod 2, the both ends of spring 10 are connected with sleeve plate 9 and connecting plate 11 respectively.

[0028] When the nut 3 is screwed, the connecting plate 11 will rotate and compress the spring 10, and the sleeve plate 9 slides on the screw rod 2, when the spring 10 is compressed to the maximum limit, i.e. there is no gap on the spring 10, the sleeve plate 9 is tightly pressed against the chain surface, and the nut 3 cannot be screwed, i.e. the installation is completed.

[0029] Of course, in other embodiments, the elastic piece 8 can be a V-shaped elastic piece, which is fixedly connected with the sleeve plate 9 and is connected with the connecting plate 11.

[0030] In the embodiment, as shown in Figure 1 and Figure 4 , the insertion end of the positioning rod 13 is provided with a chamfer surface 14, which can effectively reduce the friction when the positioning rod 13 is inserted, and reduce the installation difficulty.

[0031] In the embodiment, as shown in Figure 1 , the side of the connecting head 1 towards the screw rod 2 is provided with an anti-skid rubber ring 6, which can be deformed by extrusion, not only improving the friction when the bolt is connected, but also having the protection function of reducing wear, and high practicability.

[0032] The implementation principle of the chain bolt with the anti-reverse structure in the embodiment is as follows: during installation, the first positioning piece 5, the second positioning piece 7, the elastic piece 8 and the nut 3 are all disassembled, the screw rod 2 is inserted into the chain connecting hole, then the second positioning piece 7, the elastic piece 8, the first positioning piece 5 and the nut 3 are installed in sequence, while the nut 3 is screwed, the nut 3 pushes the first positioning piece 5 to extrude the elastic piece 8, and then the elastic piece 8 exerts the elastic force on the second positioning piece 7, the second positioning piece 7 is tightly attached to the chain surface, when the nut 3 is screwed, the elastic force of the elastic piece 8 also acts on the first positioning piece 5, and then forces the nut 3 to be tightly attached to the threaded connection part of the screw rod 2, thereby realizing the functions of anti-reverse and anti-loose.

[0033] Embodiment 2:

[0034] Please refer to Figure 5 , the technical scheme provided by the utility model has the advantages that:

[0035] Different from the embodiment 1, the side of the sleeve plate 9 towards the connecting head 1 is provided with a protective rubber ring 16, which can be deformed by extrusion during installation, not only improving the friction when the bolt is connected, but also having the protection function of reducing wear, and high practicability.

[0036] It is to be noted that, in the present text, terms such as first and second, and the like, merely refer to one entity or action being distinguished from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be modified, altered, replaced and varied in many ways without departing from the principles and spirit of the present application.

Claims

1. A chain bolt with an anti-reverse structure, including a connector (1), characterized in that: A screw (2) is provided on the connector (1), and a positioning groove (4) is provided on the screw (2) in the axial direction. The length of the positioning groove (4) is equal to the length of the screw (2). A nut (3) is screwed onto the screw (2); It also includes positioning component 1 (5), positioning component 2 (7), and elastic component (8); The first positioning component (5) and the second positioning component (7) are both sleeved on the screw (2). The first positioning component (5) and the second positioning component (7) can move along the screw (2) in the axial direction. The first positioning component (5) is in contact with the nut (3). The elastic element (8) is disposed between the first positioning element (5) and the second positioning element (7) to make the first positioning element (5) and the nut (3) tightly connected.

2. The chain bolt with anti-reverse structure according to claim 1, characterized in that: The first positioning component (5) includes a connecting plate (11) sleeved on the screw (2), and the connecting plate (11) has a circular hole larger than the diameter of the screw (2).

3. The chain bolt with anti-reverse structure according to claim 2, characterized in that: A plurality of insertion holes (15) are provided on the nut (3), and a positioning rod (13) adapted to the insertion holes (15) is provided on the connecting plate (11), and the positioning rod (13) is inserted into the insertion hole (15).

4. The chain bolt with anti-reverse structure according to claim 3, characterized in that: The insertion end of the positioning rod (13) is provided with a chamfered surface (14).

5. The chain bolt with anti-reverse structure according to claim 2, characterized in that: The second positioning component (7) includes a sleeve plate (9) and a positioning piece (12) embedded in the positioning groove (4). The positioning piece (12) is disposed in the inner ring of the sleeve plate (9) and can slide in the positioning groove (4).

6. The chain bolt with anti-reverse structure according to claim 5, characterized in that: The elastic element (8) includes a spring (10) that is looped around the outside of the screw (2), and the two ends of the spring (10) are connected to the sleeve plate (9) and the connecting plate (11) respectively.

7. The chain bolt with anti-reverse structure according to claim 1, characterized in that: The connector (1) is provided with an anti-slip rubber ring (6) on the side facing the screw (2).

8. The chain bolt with anti-reverse structure according to claim 5, characterized in that: The socket plate (9) is provided with a protective rubber ring (16) on the side facing the connector (1).

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