A coupling with stable connection

Abstract

The utility model discloses a kind of coupling of stable connection, including upper half shaft and lower half shaft, both are equipped with multiple corresponding mounting holes, multiple connecting components are installed between the mounting hole of both;Connecting component includes telescopic fixed plate, telescopic fixed plate both ends are respectively clamped in upper and lower mounting hole, and fastening bolt is installed between telescopic fixed plate both ends, positioning sleeve is installed in telescopic fixed plate bottom inner side;Telescopic fixed plate includes lower telescopic plate and upper telescopic plate;The utility model is by the cooperation of upper half shaft, lower half shaft, mounting hole, connecting component, the connecting force of upper and lower shaft is dispersed to multiple connecting components, not rely on single connection point, this design can effectively avoid the damage caused by single-point overload, reduce local failure risk;The arc-shaped groove of adjusting sleeve top and upper half shaft mounting hole is adapted by thread, not only can further fix the relative position of upper and lower shaft, prevent radial deviation, but also can fill installation gap, improve positioning stability.

Description

Technical Field

[0001] This utility model specifically relates to a coupling with stable connection. Background Technology

[0002] As a core component of mechanical transmission systems, couplings play a crucial role in transmitting torque and compensating for shaft misalignment. Their performance directly determines the operational stability and reliability of the entire machine.

[0003] Most existing coupling half-shafts are connected by ordinary bolts. During operation, high-speed rotation often causes the connecting bolts to loosen, making the half-shaft connection unstable and causing excessive rotational deviation between the two shafts. If this problem is not solved, it will directly lead to abnormal vibration during operation. When the vibration speed exceeds a certain limit, the life of the coupling will be greatly reduced, and the bolts and elastic bodies may fall off. At excessive speeds, serious failures such as bolt breakage may even occur.

[0004] Therefore, it is necessary to invent a coupling that provides a stable connection to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a coupling with stable connection, which can make the half-shaft connection stable.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a stable coupling, comprising an upper half shaft and a lower half shaft, wherein the upper half shaft and the lower half shaft are provided with a plurality of corresponding mounting holes, and a plurality of connecting components are installed between the mounting holes;

[0009] The connecting assembly includes a telescopic fixing plate, with both ends of the telescopic fixing plate clamped in the upper and lower mounting holes respectively, and fastening bolts installed between the two ends of the telescopic fixing plate. A positioning kit is installed on the inner side of the bottom of the telescopic fixing plate, and the positioning kit is installed between the upper half shaft and the lower half shaft, that is, between the mounting holes of the two.

[0010] The telescopic fixing plate includes a lower telescopic plate and an upper telescopic plate. The lower telescopic plate has a telescopic groove on the top of one side, and the bottom end of the upper telescopic plate is installed in the telescopic groove. Both the lower telescopic plate and the upper telescopic plate have fastening screw holes for connecting the fastening bolts on one side.

[0011] The fastening bolt is installed in the fastening screw hole, and the positioning kit positions the distance between the upper half shaft and the lower half shaft.

[0012] Preferably, the positioning kit includes a fixed sleeve, which is fixed to the positioning groove at the fastening screw hole on the lower telescopic plate. An adjusting sleeve is installed on the outside of the fixed sleeve. The inner wall of the adjusting sleeve is provided with a thread that matches the outer wall of the fixed sleeve, and the inner diameter of the fixed sleeve matches the inner diameter of the fastening screw hole. The adjusting sleeve can be rotated vertically, and its top contacts the bottom of the mounting hole on the upper half shaft. The bottom of the mounting hole is provided with arc-shaped grooves on both sides that match the adjusting sleeve, and the top outer wall of the adjusting sleeve is provided with a thread that matches the inner wall of the arc-shaped groove.

[0013] Preferably, the fastening bolt is inserted into the fastening screw hole, and a limiting ring is provided at the top of the fastening bolt. A hexagonal nut is installed on the upper outer wall of the fastening bolt, and the hexagonal nut is located on the top of the upper telescopic plate. A hexagonal nut is also installed on the lower outer wall of the fastening bolt. A hexagonal positioning groove is provided at the bottom of the fastening screw hole on the lower telescopic plate. The hexagonal nut is positioned and installed in the hexagonal positioning groove. A limiting nut is also installed on the lower outer wall of the fastening bolt below the hexagonal nut.

[0014] Preferably, a limiting frame is provided at the opening of the telescopic groove, and a telescopic limiting strip matching the limiting frame is provided at the bottom of one end of the upper telescopic plate, and the upper telescopic plate extends and retracts within the telescopic groove.

[0015] Preferably, the lower telescopic plate and the upper telescopic plate are integrally locked outside the upper half shaft and the lower half shaft, and the overall size of the upper telescopic plate is smaller than the overall size of the lower telescopic plate, and the size of the mounting hole on the upper half shaft is smaller than the size of the mounting hole on the lower half shaft.

[0016] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0017] 1. This utility model uses the cooperative structure of the upper half shaft, lower half shaft, mounting hole, and connecting components to distribute the connecting force of the upper and lower shafts to multiple connecting components, rather than relying on a single connection point. This design can effectively avoid damage caused by single-point overload, reduce the risk of local failure, and at the same time improve the overall load-bearing capacity of the coupling, adapt to the power transmission requirements under high load conditions, and ensure the connection stability during long-term use.

[0018] 2. In this utility model, the arc-shaped groove at the top of the adjusting sleeve and the mounting hole of the upper half shaft are threaded together, which can not only further fix the relative position of the upper and lower shafts and prevent radial displacement, but also fill the installation gap, improve positioning stability, and prevent the shaft from shaking during operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the connecting component of this utility model;

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the connecting component of this utility model. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the connecting component of this utility model. Figure 2 .

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Upper half shaft; 2. Lower half shaft; 3. Mounting hole; 31. Arc groove; 4. Connecting assembly; 41. Telescopic fixing plate; 411. Lower telescopic plate; 412. Upper telescopic plate; 413. Telescopic groove; 414. Fastening screw hole; 415. Positioning groove; 416. Hexagonal positioning groove; 417. Limiting frame; 418. Telescopic limiting strip; 42. Fastening bolt; 421. Limiting ring; 422. Hexagonal nut one; 423. Hexagonal nut two; 424. Limiting nut; 43. Positioning kit; 431. Fixing sleeve; 432. Adjusting sleeve. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-5 The coupling shown includes an upper shaft 1 and a lower shaft 2. Both the upper shaft 1 and the lower shaft 2 are provided with a plurality of corresponding mounting holes 3, and a plurality of connecting components 4 are installed between the mounting holes 3.

[0029] Specifically, the connecting component 4 includes a telescopic fixing plate 41, with both ends of the telescopic fixing plate 41 clamped in the upper and lower mounting holes 3 respectively, and fastening bolts 42 installed between the two ends of the telescopic fixing plate 41. A positioning kit 43 is installed on the inner side of the bottom of the telescopic fixing plate 41, and the positioning kit 43 is installed between the upper half shaft 1 and the lower half shaft 2, that is, between the two mounting holes 3.

[0030] Specifically, the telescopic fixing plate 41 includes a lower telescopic plate 411 and an upper telescopic plate 412. The lower telescopic plate 411 has a telescopic groove 413 on one side of its top, and one bottom end of the upper telescopic plate 412 is installed in the telescopic groove 413. Both the lower telescopic plate 411 and the upper telescopic plate 412 have fastening screw holes 414 for connecting fastening bolts 42 on one side. The fastening bolts 42 are installed in the fastening screw holes 414, and the positioning kit 43 positions the distance between the upper half shaft 1 and the lower half shaft 2.

[0031] Specifically, the positioning kit 43 includes a fixed sleeve 431, which is fixed to a positioning groove 415 at a fastening screw hole 414 on the lower telescopic plate 411. An adjusting sleeve 432 is installed on the outside of the fixed sleeve 431. The inner wall of the adjusting sleeve 432 is provided with a thread that matches the outer wall of the fixed sleeve 431, and the inner diameter of the fixed sleeve 431 matches the inner diameter of the fastening screw hole 414. The adjusting sleeve 432 can be rotated vertically, and its top contacts the bottom of the mounting hole 3 on the upper half shaft 1. The bottom sides of the mounting hole 3 are provided with arc-shaped grooves 31 that match the adjusting sleeve 432, and the top outer wall of the adjusting sleeve 432 is provided with a thread that matches the inner wall of the arc-shaped groove 31.

[0032] Specifically, the fastening bolt 42 is inserted into the fastening bolt hole 414, and a limiting ring 421 is provided on the top of the fastening bolt 42. A hexagonal nut 422 is installed on the upper outer wall of the fastening bolt 42. The hexagonal nut 422 is located on the top of the upper telescopic plate 412. A hexagonal nut 423 is also installed on the lower outer wall of the fastening bolt 42. A hexagonal positioning groove 416 is provided at the bottom of the fastening bolt hole 414 on the lower telescopic plate 411. The hexagonal nut 423 is positioned and installed in the hexagonal positioning groove 416. A limiting nut 424 is also installed on the lower outer wall of the fastening bolt 42 below the hexagonal nut 423.

[0033] Specifically, a limiting frame 417 is provided at the opening of the telescopic groove 413, and a telescopic limiting strip 418 matching the limiting frame 417 is provided at the bottom of one end of the upper telescopic plate 412, and the upper telescopic plate 412 extends and retracts within the telescopic groove 413.

[0034] Specifically, the lower telescopic plate 411 and the upper telescopic plate 412 are fitted together outside the upper half shaft 1 and the lower half shaft 2, and the overall size of the upper telescopic plate 412 is smaller than the overall size of the lower telescopic plate 412, and the size of the mounting hole 3 on the upper half shaft 1 is smaller than the size of the mounting hole 3 on the lower half shaft 2.

[0035] In this embodiment, the fixed sleeve is embedded in the positioning groove of the lower telescopic plate to ensure that the fixed sleeve and the fastening screw hole of the lower telescopic plate are coaxial, thus completing the positioning and fixing of the fixed sleeve; the adjusting sleeve is rotated so that it engages with the outer thread of the fixed sleeve through the inner thread, thereby realizing the detachable connection between the adjusting sleeve and the fixed sleeve. At this time, the adjusting sleeve can move vertically along the axial direction of the fixed sleeve.

[0036] In this embodiment, the lower telescopic plate is attached to the outside of the lower half-shaft, aligning the fastening screw holes of the lower telescopic plate with the mounting holes of the lower half-shaft, ensuring that the lower telescopic plate is stably placed on the lower half-shaft; the upper telescopic plate is pushed so that one end of its bottom is inserted into the telescopic groove of the lower telescopic plate until the fastening screw holes of the upper telescopic plate are aligned with the mounting holes of the upper half-shaft. At this time, the telescopic limit strip of the upper telescopic plate will be locked in the limit frame of the telescopic groove, preventing the upper telescopic plate from falling out of the telescopic groove. At the same time, the upper telescopic plate as a whole can flexibly adapt to the spacing deviation of the upper and lower half-shafts.

[0037] In this embodiment, the adjusting sleeve is rotated to move vertically upward along the fixed sleeve until the top of the adjusting sleeve is inserted into the arc-shaped groove of the upper half-shaft mounting hole. The precise positioning of the distance between the upper half-shaft and the lower half-shaft is achieved by the engagement of the outer wall thread of the top of the adjusting sleeve with the inner wall thread of the arc-shaped groove. The fastening bolts are then inserted from bottom to top into the fastening bolt holes of the lower telescopic plate, the fixed sleeve, and the upper telescopic plate, ensuring that the limiting ring at the top of the bolt is engaged with the top of the fastening bolt to prevent the bolt from being over-inserted.

[0038] Specifically, first place the second hexagonal nut into the hexagonal positioning groove of the lower telescopic plate, rotate the second hexagonal nut to make it engage with the thread on the lower outer wall of the fastening bolt, and use the hexagonal positioning groove to limit the rotation direction of the second hexagonal nut to prevent it from loosening; below the second hexagonal nut, screw the limit nut into the lower outer wall of the fastening bolt, and rotate the limit nut until it is tightly fitted with the second hexagonal nut to form a double anti-loosening mechanism;

[0039] Specifically, finally screw the hexagonal nut into the outer wall above the fastening bolt, and tighten the hexagonal nut to make the upper and lower telescopic plates clamp the upper and lower half shafts together, thus completing the assembly of a single connecting component.

[0040] Specifically, repeat the above steps to install all connecting components at the corresponding mounting holes on the upper and lower half shafts to complete the assembly of the entire coupling.

[0041] The positioning kit directly limits the distance between the upper and lower half shafts by adjusting the thread engagement between the sleeve and the arc groove and fixing the positioning fit between the sleeve and the lower telescopic plate, thus preventing axial misalignment between the two during operation.

[0042] In this embodiment, the fastening bolt, along with hexagonal nut one, hexagonal nut two, and a limiting nut, forms a multi-layered fastening structure, effectively preventing bolt loosening. Simultaneously, the clamping force of the telescopic fixing plate can be flexibly adjusted by the tightening degree of hexagonal nut one, further enhancing the connection tightness and preventing relative slippage between the upper and lower half-shafts during transmission. The telescopic structure of the telescopic fixing plate can flexibly adapt to spacing deviations during the installation of the upper and lower half-shafts, eliminating the need for additional machining or adjustment of the shaft dimensions and reducing installation difficulty.

[0043] Specifically, the adjusting sleeve can be adjusted vertically along the fixed sleeve. Even if there is a slight coaxiality deviation between the mounting holes of the upper and lower half shafts, precise docking can be achieved by rotating the adjusting sleeve, thus improving adaptability to different installation scenarios.

[0044] In this embodiment, the hexagonal positioning groove quickly positions the hexagonal nut, the limiting frame and telescopic limiting strip quickly limit the position of the upper telescopic plate, and the arc groove quickly positions the adjusting sleeve. The components can be aligned without the need for complex tools, shortening the assembly time. All connections adopt threaded engagement or plug-in structure, and no welding is required during the assembly process. Disassembly only requires rotating the nut and adjusting sleeve in the opposite direction, which facilitates the later maintenance and replacement of components.

[0045] In this embodiment, the upper telescopic plate is smaller than the lower telescopic plate, and the upper half-shaft mounting hole is smaller than the lower half-shaft mounting hole, so that the force is more concentrated on the larger lower telescopic plate and lower half-shaft, reducing the risk of damage to weak components.

[0046] Specifically, the threaded engagement between the adjusting sleeve and the arc groove increases the contact area, reduces local pressure, and prevents cracks from appearing in the upper shaft mounting hole due to concentrated stress. At the same time, the cooperation between the telescopic limit strip and the limit frame prevents structural deformation of the telescopic fixing plate during long-term use and extends the service life of the overall coupling.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A coupling with stable connection, characterized in that: It includes an upper half shaft (1) and a lower half shaft (2), both of which are provided with a plurality of corresponding mounting holes (3), and a plurality of connecting components (4) are installed between the mounting holes (3). The connecting assembly (4) includes a telescopic fixing plate (41), with both ends of the telescopic fixing plate (41) clamped in the upper and lower mounting holes (3) respectively, and fastening bolts (42) installed between the two ends of the telescopic fixing plate (41). A positioning kit (43) is installed on the inner side of the bottom of the telescopic fixing plate (41), and the positioning kit (43) is installed between the upper half shaft (1) and the lower half shaft (2), that is, between the mounting holes (3) of the two. The telescopic fixing plate (41) includes a lower telescopic plate (411) and an upper telescopic plate (412). The lower telescopic plate (411) has a telescopic groove (413) on one side top. The bottom end of the upper telescopic plate (412) is installed in the telescopic groove (413). Both the lower telescopic plate (411) and the upper telescopic plate (412) have fastening screw holes (414) for connecting the fastening bolts (42) on one side. The fastening bolt (42) is installed in the fastening screw hole (414), and the positioning kit (43) positions the distance between the upper half shaft (1) and the lower half shaft (2).

2. The coupling with stable connection according to claim 1, characterized in that: The positioning kit (43) includes a fixed sleeve (431), which is fixed to the positioning groove (415) at the fastening screw hole (414) on the lower telescopic plate (411). An adjusting sleeve (432) is installed on the outside of the fixed sleeve (431). The inner wall of the adjusting sleeve (432) is provided with a thread that matches the outer wall of the fixed sleeve (431), and the inner diameter of the fixed sleeve (431) matches the inner diameter of the fastening screw hole (414). The adjusting sleeve (432) can be rotated vertically, and its top is in contact with the bottom of the mounting hole (3) on the upper half shaft (1). The bottom sides of the mounting hole (3) are provided with arc grooves (31) that match the adjusting sleeve (432), and the top outer wall of the adjusting sleeve (432) is provided with a thread that matches the inner wall of the arc groove (31).

3. The coupling with stable connection according to claim 1, characterized in that: The fastening bolt (42) is inserted into the fastening bolt hole (414), and a limiting ring (421) is provided on the top of the fastening bolt (42). A hexagonal nut (422) is installed on the upper outer wall of the fastening bolt (42). The hexagonal nut (422) is located on the top of the upper telescopic plate (412). A hexagonal nut (423) is also installed on the lower outer wall of the fastening bolt (42). A hexagonal positioning groove (416) is provided at the bottom of the fastening bolt hole (414) on the lower telescopic plate (411). The hexagonal nut (423) is positioned and installed in the hexagonal positioning groove (416). A limiting nut (424) is also installed on the lower outer wall of the fastening bolt (42) below the hexagonal nut (423).

4. A stable coupling according to claim 1, characterized in that: The expansion groove (413) is provided with a limiting frame (417) at the opening, and the bottom of one end of the upper expansion plate (412) is provided with an expansion limiting strip (418) that matches the limiting frame (417). The upper expansion plate (412) expands and contracts within the expansion groove (413).

5. A stable coupling according to claim 1, characterized in that: The lower telescopic plate (411) and the upper telescopic plate (412) are integrally locked outside the upper half shaft (1) and the lower half shaft (2), and the overall size of the upper telescopic plate (412) is smaller than the overall size of the lower telescopic plate (411), and the size of the mounting hole (3) on the upper half shaft (1) is smaller than the size of the mounting hole (3) on the lower half shaft (2).

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