Special-shaped double-screw assembly

Abstract

The utility model discloses a special-shaped double-screw assembly, and relates to the technical field of fasteners. The device structurally comprises a connecting plate, two groups of screws, positioning sleeves and jackscrews, the two ends of the connecting plate are each provided with a round through hole used for allowing a screw to penetrate through. An annular cylinder coaxial with the circular through hole is fixed to the upper surface of the connecting plate. A threaded through hole matched with the jackscrew is formed in the circular ring cylinder; the inner ring of the positioning sleeve is matched with the outer wall of the screw cap end; tooth-shaped grooves formed in the axial direction of the positioning sleeve are evenly formed in the circumferential side face of the upper half portion of the positioning sleeve. Through the structural design of the special-shaped double-screw assembly, the two ends of the special-shaped double-screw assembly can be firmly fixed on a joint body according to required pre-tightening force, and the fixed structures at the two ends are mechanically interlocked, so that the stability and the anti-seismic property of the connecting structure are greatly enhanced; the connecting plate is divided into two parts, the mounting distance of two screws can be adjusted through the design of the rectangular inserting groove and the rectangular inserting plate, and the application range is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, in particular to a special-shaped double screw assembly. Background Art

[0002] Screw: A type of fastener consisting of a head and a screw. It can be divided into three categories according to its use: machine screws, set screws, and special-purpose screws. It can be used to directly fix the equipment. Screw connection is a detachable connection. Screws are widely used in mechanical configurations. Traditional screws are small in size. When screws are used to fix equipment. During long-term use, due to external influences, loosening or falling off occurs, causing the screw connection to fail, posing a safety hazard and failing to meet usage requirements. In addition, there are differences in the preload force of different screws. In order to ensure that the screws can effectively play a fastening role, this application document provides a special-shaped double screw assembly. Utility Model Content

[0003] The utility model aims to provide a special-shaped double screw assembly, both ends of which can be firmly fixed on the joint body according to the required pre-tightening force, and the fixing structures at the two ends are mechanically interlocked, which greatly enhances the stability and seismic resistance of the connection structure.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a special-shaped double screw assembly, comprising a connecting plate and two groups of screws, a positioning sleeve and a top screw; a round through hole for passing the screw is respectively provided at the two ends of the connecting plate; a circular ring cylinder coaxially arranged with the round through hole is fixed on the upper surface of the connecting plate; a threaded through hole matched with the top screw is provided on the circular ring cylinder; the inner ring of the positioning sleeve is matched with the outer wall of the screw cap end; and toothed grooves arranged along the axial direction of the positioning sleeve are uniformly distributed on the circumferential side surface of the upper half of the positioning sleeve.

[0006] As a preferred technical solution of the utility model, the connecting plate is divided into a first plate body and a second plate body; a rectangular slot is fixed on the first plate body; a rectangular plug-in plate that plugs into and fits with the rectangular slot is fixed on the second plate body.

[0007] As a preferred technical solution of the utility model, a ring platform is provided at the lower half of the positioning sleeve; chamfers are provided at the upper and lower ends of the ring platform; and the upper end of the ring platform is flush with the lower end of the threaded through hole.

[0008] As a preferred technical solution of the utility model, the threaded through hole is arranged to be inclined in a clockwise direction.

[0009] As a preferred technical solution of the present utility model, a gasket is provided between the screw and the connecting plate.

[0010] The utility model has the following beneficial effects:

[0011] 1. The structural design of the special-shaped double screw assembly of the utility model can install the required pre-tightening force at both ends and firmly fix them on the joint body. The fixed structures at both ends are mechanically interlocked, which greatly enhances the stability and seismic resistance of the connection structure.

[0012] 2. The utility model divides the connecting plate into two parts, wherein the rectangular slot and the rectangular plug plate are designed so that the installation distance between the two screws can be adjusted, and has a wide range of applications.

[0013] 3. The utility model can adapt to different fixing requirements, and is suitable for situations where nuts need to be tightened, and is also suitable for situations where fixing through threaded holes is required, making it an indispensable component in complex engineering projects.

[0014] 4. Compared with ordinary single-head bolts, the design of the double-head stud bolt of the utility model can usually provide higher bearing capacity.

[0015] 5. The utility model provides a significant advantage in the easy disassembly and assembly of the special-shaped double screw assembly during maintenance and repair. Even in an environment with small space or limited conditions, engineering and technical personnel can easily complete the disassembly and installation work, ensuring the high efficiency of the project.

[0016] 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

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the special-shaped double screw assembly of the utility model.

[0019] Figure 2 It is a top view of the utility model.

[0020] Figure 3 This is a cross-sectional view of the utility model.

[0021] Figure 4 It is a structural diagram of the connecting plate.

[0022] Figure 5 It is a structural schematic diagram of the positioning sleeve.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1-connecting plate, 2-screw, 3-positioning sleeve, 4-top screw, 11-round through hole, 12-circular ring tube, 13-threaded through hole, 14-first plate body, 15-second plate body, 16-rectangular slot, 17-rectangular plug plate, 31-toothed groove, 32-ring platform. DETAILED DESCRIPTION

[0025] 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 of 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. Specific embodiment one:

[0027] See also Figure 1-4 As shown, the utility model is a special-shaped double screw assembly, including a connecting plate 1 and two groups of screws 2, a positioning sleeve 3 and a top screw 4. The head of the screw 2 is a hexagonal prism structure, and a hexagonal groove is provided at the top of the hexagonal prism. A round through hole 11 for inserting the screw 2 is provided at each end of the connecting plate 1. A circular ring cylinder 12 coaxially arranged with the round through hole 11 is fixed on the upper surface of the connecting plate 1. A threaded through hole 13 cooperating with the top screw 4 is provided on the circular ring cylinder 12. The inner ring of the positioning sleeve 3 cooperates with the outer wall of the cap end of the screw 2. The upper half of the circumferential side surface of the positioning sleeve 3 is evenly provided with toothed grooves 31 arranged along the axial direction of the positioning sleeve 3. A gasket is provided between the screw 2 and the connecting plate 1. The threaded through hole 13 is inclined in the clockwise direction. When in use, the two screws 2 can be pre-tightened with a torque wrench alone, and then the positioning sleeve 3 is installed and the top screw 4 is tightened to position the positioning sleeve 3.

[0028] The use of the positioning sleeve 3 and the top screw 4 can effectively prevent the screw 2 from loosening during use. In particular, the design of the top screw 4, which cooperates with the threaded through hole 13, provides an additional locking mechanism. When the top screw 4 is tightened, it will generate a pressure on the screw 2, thereby increasing the friction force, and the inclined top screw 4 generates a force in the pre-tightening direction on the screw 2, making it difficult for the screw 2 to rotate and loosen due to vibration or other external forces.

[0029] The lower half of the positioning sleeve 3 is provided with a ring platform 32. The upper and lower ends of the ring platform 32 are both chamfered. The upper end of the ring platform 32 is flush with the lower end of the threaded through hole 13. The design of the circular through hole 11 and the circular ring tube 12 on the connecting plate 1, as well as the ring platform 32 provided in the lower half of the positioning sleeve 3, these structural characteristics also help to enhance the stability of the entire assembly. The coaxial arrangement of the circular through hole 11 and the circular ring tube 12 ensures the accurate positioning of the screw during the connection process, and the design of the ring platform 32 provides a solid support platform for the positioning sleeve 3. The tip of the top screw 4 is pressed against the upper end of the ring platform 32, which effectively prevents the axial movement of the positioning sleeve 3 and further improves the anti-loosening ability of the entire assembly.

[0030] The easy disassembly and assembly of the special-shaped double screw assembly provides significant advantages during maintenance and repair. Even in a small space or restricted conditions, engineers and technicians can easily complete the disassembly and installation work, ensuring the high efficiency of the project.

[0031] In summary, the special-shaped double screw assembly combines a variety of mechanical design principles, including friction anti-loosening, mechanical anti-loosening, etc., to ensure the stability and safety of the screws during use. Specific embodiment 2:

[0033] Based on the specific embodiment 1, the difference of this embodiment is that:

[0034] like Figure 5 As shown, the connecting plate 1 is divided into a first plate body 14 and a second plate body 15. A rectangular slot 16 is fixed on the first plate body 14. A rectangular plug plate 17 that plugs and cooperates with the rectangular slot 16 is fixed on the second plate body 15.

[0035] The connecting plate 1 is divided into two parts, wherein the rectangular slot 16 and the rectangular plug plate 17 are designed so that the installation distance between the two screws 2 can be adjusted, which can provide mechanical interlocking of the screws 2 on both sides, further enhancing the overall stability of the assembly. The anti-loosening effect is achieved through the form of a mechanical structure.

[0036] 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 utility model. 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.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model 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 utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A special-shaped double screw assembly, characterized in that: It comprises a connecting plate (1) and two sets of screws (2), a positioning sleeve (3) and a top screw (4); A round through hole (11) for inserting the screw (2) is respectively formed at the two ends of the connecting plate (1); a circular cylinder (12) coaxially arranged with the round through hole (11) is fixed on the upper surface of the connecting plate (1); a threaded through hole (13) cooperating with the top screw (4) is formed on the circular cylinder (12); The inner ring of the positioning sleeve (3) cooperates with the outer wall of the cap end of the screw (2); and tooth-shaped grooves (31) are evenly distributed on the circumferential side surface of the upper half of the positioning sleeve (3) and are arranged along the axial direction of the positioning sleeve (3).

2. The special-shaped double screw assembly according to claim 1, characterized in that: The connecting plate (1) is divided into a first plate body (14) and a second plate body (15); a rectangular slot (16) is fixed on the first plate body (14); and a rectangular plug plate (17) pluggably engaged with the rectangular slot (16) is fixed on the second plate body (15).

3. The special-shaped double screw assembly according to claim 1, characterized in that: The lower half of the positioning sleeve (3) is provided with a ring platform (32); the upper and lower ends of the ring platform (32) are both chamfered; the upper end of the ring platform (32) is flush with the lower end of the threaded through hole (13).

4. The special-shaped double screw assembly according to claim 1, characterized in that: The threaded through hole (13) is arranged to be inclined in a clockwise direction.

5. The special-shaped double screw assembly according to claim 1, characterized in that: A gasket is provided between the screw (2) and the connecting plate (1).

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