Coupling structure for connecting shafts with different diameters
By designing an adjustable coupling structure, the problem of convenient connection of shafts with different diameters was solved, achieving a fast and stable connection effect.
Patent Information
- Application Number
- CN202520279891.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing couplings have fixed dimensions and cannot accommodate shafts of different diameters, resulting in inconvenience and the need for customization, which wastes manpower and resources.
A coupling structure was designed, which achieves adjustable connection of shafts with different diameters through the combination of mounting base, mounting ring, ring tooth, slider and clamping rod. The ratchet and pawl structure prevents the screw from rotating randomly and ensures stable connection.
It enables quick and convenient connection of shafts with different diameters, reduces customization requirements, and improves the flexibility of use and connection stability.
Smart Images
Figure CN223908650U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shaft coupling, specifically to a shaft coupling structure for connecting shafts of different diameters. BACKGROUND
[0002] A shaft coupling is a device that connects two shafts or a shaft and a rotating member, rotates together during the transmission of motion and power, and does not disconnect under normal circumstances. Sometimes it is used as a safety device to prevent the connected machine from bearing excessive load, and plays the role of overload protection.
[0003] In the prior art, the shaft coupling is connected by bolts, screws and other connecting parts to complete the installation of two groups of shafts at both ends. The size of the shafts that can be fixed by the shaft coupling is fixed, and the size of the shaft coupling cannot be adjusted. Customized shaft couplings are needed for the connection of shafts of different diameters, which is not only inconvenient to use but also requires a lot of manpower and resources. Therefore, a shaft coupling structure for connecting shafts of different diameters is proposed to solve the above problems. SUMMARY
[0004] The utility model aims at providing a shaft coupling structure for connecting shafts of different diameters to solve the problems raised in the background.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a shaft coupling structure for connecting shafts of different diameters, comprising a shaft coupling, two groups of symmetrically distributed mounting seats are arranged on both sides of the shaft coupling, a mounting ring is arranged in the mounting seat, the mounting ring is rotatably connected with the mounting seat through a bearing, an annular tooth is fixedly installed on the mounting ring, three groups of annularly distributed cover plates are fixedly installed on the mounting seat, three groups of annularly distributed sliding blocks are arranged between the cover plates and the mounting seat, the three groups of sliding blocks are meshingly connected with the mounting ring through the annular tooth, a clamping rod is fixedly installed on each of the three groups of sliding blocks, a clamping block is fixedly installed on each of the three groups of clamping rods, a tooth ring is sleeved on the mounting ring, a first rack is slidably installed in the mounting seat, the first rack is meshingly connected with the tooth ring, a screw rod is arranged in the mounting seat, two groups of symmetrically distributed ratchets are sleeved on the upper end of the screw rod, two groups of symmetrically distributed pawls are arranged in the mounting seat, the two groups of pawls are correspondingly arranged with the two groups of ratchets, and the two groups of pawls are meshingly connected with the corresponding ratchets.
[0006] As a further preferred embodiment of the present technical solution, a sliding groove is formed in the cover plate, the sliding groove is correspondingly arranged with the sliding block, and the sliding block is slidably connected with the cover plate through the sliding groove.
[0007] As a further preferred embodiment of the present technical solution, the screw rod penetrates through the mounting seat at both ends and is rotatably connected with the mounting seat through a bearing, and the screw rod penetrates through the first rack and is threadedly connected with the rack.
[0008] As a further preferred of the technical solution, the two groups of the pawls are rotatably connected with the mounting seat through a rotating rod, a first torsion spring is sleeved on the rotating rod, two ends of the first torsion spring are fixedly connected with the pawl and the mounting seat respectively, a gear is sleeved on the rotating rod, and a second rack is slidably installed in the mounting seat.
[0009] As a further preferred of the technical solution, the second rack is meshingly connected with the corresponding gear, the two groups of the second racks are fixedly connected through a pull frame, the pull frame penetrates through the mounting seat and is slidably connected with the mounting seat, and a positioning block is fixedly installed on the pull frame.
[0010] As a further preferred of the technical solution, a fixing rod is fixedly installed in the mounting seat, the fixing rod is correspondingly arranged with the positioning block, two groups of symmetrical positioning frames are rotatably sleeved on the fixing rod, and the two groups of the positioning frames are movably clamped with the positioning block.
[0011] As a further preferred of the technical solution, two groups of symmetrical second torsion springs are sleeved on the fixing rod, and two ends of the second torsion spring are fixedly connected with the positioning frame and the fixing rod respectively.
[0012] The utility model provides a coupling structure for different diameter shaft connection has the following beneficial effects:
[0013] The utility model discloses a mounting ring in the mounting seat drives the rotation of annular tooth, and the spacing between three groups of sliding blocks and clamping rods is adjusted under the limiting action of the sliding groove, and the transformation of the spacing between the three groups of clamping rods can make the coupling structure fix different models of shaft rods, only need to set three groups of annular distribution's clamping grooves on the shaft rod in advance and correspond with the clamping block, and the three groups of clamping rods are synchronously slid inward until the clamping block and the clamping groove are clamped to complete the fixing of the coupling structure to the shaft rod, and the connecting mode is convenient and fast, and the coupling structure can be suitable for the connection and installation of various different models of shaft rods, and the shaft rods installed on the two sides of the coupling are not limited to the same size, and the coupling does not need to be customized for connecting different size shaft rods.
[0014] The utility model discloses a ratchet wheel and pawl to realize the rotation of the screw rod, and the screw rod does not rotate randomly to cause the transformation of the position between the three groups of clamping rods in the process that the coupling is used to connect two shaft rods and runs, and the normal use of the coupling structure is influenced, and when the screw rod needs to be rotated to adjust the spacing between the three groups of clamping rods, the positioning frame can be used to fix the positioning block to remove the limitation between the pawl and the corresponding ratchet wheel. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the whole structure schematic view of the utility model;
[0016] Figure 2The structure separation schematic view of the mounting seat, the cover plate and the mounting ring of the utility model is shown in the figure.
[0017] Figure 3 The utility model discloses Figure 2 The structure amplification schematic view of A is shown in the figure.
[0018] Figure 4 The utility model discloses Figure 2 The structure amplification schematic view of B is shown in the figure.
[0019] In the figure: 1, shaft coupling; 2, mounting seat; 3, cover plate; 4, mounting ring; 5, annular tooth; 6, sliding block; 7, sliding slot; 8, tooth ring; 9, first rack; 10, screw rod; 11, clamping rod; 12, clamping block; 13, ratchet wheel; 14, pawl; 15, rotating rod; 16, first torsion spring; 17, gear; 18, second rack; 19, pull frame; 20, positioning block; 21, fixed rod; 22, positioning frame; 23, second torsion spring. Specific embodiments
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0021] The utility model provides technical schemes: as Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, a shaft coupling structure for connecting shafts with different diameters comprises a coupling 1, two groups of symmetrically distributed mounting seats 2 are arranged on both sides of the coupling 1, a mounting ring 4 is arranged in the mounting seat 2, the mounting ring 4 is rotatably connected with the mounting seat 2 through a bearing, an annular tooth 5 is fixedly installed on the mounting ring 4, three groups of annularly distributed cover plates 3 are fixedly installed on the mounting seat 2, three groups of annularly distributed sliding blocks 6 are arranged between the three groups of cover plates 3 and the mounting seat 2, the three groups of sliding blocks 6 are meshingly connected with the mounting ring 4 through the annular tooth 5, a clamping rod 11 is fixedly installed on each of the three groups of sliding blocks 6, a clamping block 12 is fixedly installed on each of the three groups of clamping rods 11, a gear ring 8 is sleeved on the mounting ring 4, a first gear rack 9 is slidingly installed in the mounting seat 2, the first gear rack 9 is meshingly connected with the gear ring 8, a screw rod 10 is arranged in the mounting seat 2, two groups of symmetrically distributed ratchets 13 are sleeved on the upper end of the screw rod 10, two groups of symmetrically distributed pawls 14 are arranged in the mounting seat 2, the two groups of pawls 14 are correspondingly arranged with the two groups of ratchets 13, and the two groups of pawls 14 are meshingly connected with the corresponding ratchets 13, a sliding groove 7 is formed in the cover plate 3, the sliding groove 7 is correspondingly arranged with the sliding block 6, the sliding block 6 is slidingly connected with the cover plate 3 through the sliding groove 7, the screw rod 10 is rotatably connected with the mounting seat 2 through bearings at both ends of the screw rod 10 penetrating through the mounting seat 2, the screw rod 10 penetrates through the first gear rack 9 and is threadedly connected with the gear rack, when the screw rod 10 in the mounting seat 2 is manually rotated, the first gear rack 9 slides under the limiting action of the mounting seat 2, the gear ring 8 meshingly connected with the first gear rack 9 drives the mounting ring 4 to rotate, the annular tooth 5 on the mounting ring 4 rotates accordingly, and then the three groups of sliding blocks 6 meshingly connected with the mounting ring 4 through the annular tooth 5 drive the clamping rods 11 fixedly installed thereon to synchronously slide inwards or outwards on the mounting seat 2 under the limiting action of the sliding groove 7, the clamping rod 11 slides until the clamping block 12 on the clamping rod 11 is clamped into the three groups of annularly distributed clamping grooves previously formed on the shaft rod, and the fixing of the shaft rod is completed.
[0022] As Figure 2 and Figure 4As shown, the two sets of pawls 14 are rotatably connected with the mounting base 2 through a rotating rod 15, the rotating rod 15 is sleeved with a first torsion spring 16, two ends of the first torsion spring 16 are fixedly connected with the pawl 14 and the mounting base 2 respectively, the rotating rod 15 is sleeved with a gear 17, a second rack 18 is slidingly installed in the mounting base 2, the second rack 18 is meshingly connected with the corresponding gear 17, the two sets of second racks 18 are fixedly connected through a pull frame 19, the pull frame 19 penetrates through the mounting base 2 and is slidingly connected with the mounting base 2, the pull frame 19 is fixedly installed with a positioning block 20, the mounting base 2 is fixedly installed with a fixed rod 21, the fixed rod 21 is correspondingly arranged with the positioning block 20, the fixed rod 21 is rotatably sleeved with two sets of symmetrically distributed positioning frames 22, the two sets of positioning frames 22 are movably clamped with the positioning block 20, the fixed rod 21 is sleeved with two sets of symmetrically distributed second torsion springs 23, two ends of the second torsion spring 23 are fixedly connected with the positioning frame 22 and the fixed rod 21 respectively, when the screw rod 10 is not needed to be used, the two sets of pawls 14 are meshingly connected with the corresponding ratchet wheels 13, the rotation of the screw rod 10 is limited, when the screw rod 10 is needed to be used, the pull frame 19 is pulled to slide on the mounting base 2, the two sets of second racks 18 connected therewith slide synchronously, the two sets of gears 17 meshingly connected with the second rack 18 drive the corresponding rotating rod 15 to rotate, when the rotating rod 15 rotates, the pawl 14 on the rotating rod 15 deflects, until the positioning block 20 on the pull frame 19 is clamped between the two sets of positioning frames 22, and the two sets of positioning frames 22 fix the positions of the positioning block 20 and the pull frame 19 under the action of the second torsion spring 23, at this time, the torsional force of the second torsion spring 23 is greater than that of the two sets of first torsion springs 16, when the fixation of the positioning frame 22 to the positioning block 20 and the pull frame 19 is released, the two sets of rotating rods 15 rotate to restore the original position under the action of the first torsion spring 16, and the two sets of pawls 14 can be meshingly connected with the corresponding ratchet wheels 13.
[0023] The utility model provides a kind of coupler structure for different diameter shaft connection, specific working principle is as follows: when manually rotating screw rod 10 in mounting seat 2 under the limiting action of mounting seat 2 makes first rack 9 slide, when first rack 9 slides, the tooth ring 8 connected with it meshing is driven mounting ring 4 to rotate, annular tooth 5 on mounting ring 4 rotates in turn, and then under the limiting action of sliding slot 7 makes three groups of slider 6 meshing connection with mounting ring 4 through annular tooth 5 drive fixedly installed clamp rod 11 inwards or outwards synchronous sliding on mounting seat 2, clamp rod 11 slides until with the shaft rod outer wall of waiting installation is pasted, and make the clamping block 12 of clamp rod 11 is inserted into the three groups of annular distribution of clamping groove that are previously opened on shaft rod, complete the fixation to shaft rod, when not needing to use screw rod 10, two groups of pawl 14 are respectively meshing connection with corresponding ratchet 13, the rotation of screw rod 10 is limited, when needing to use screw rod 10, pull frame 19 is pulled and slides on mounting seat 2, and two groups of second rack 18 connected with it slide in turn synchronously, two groups of gear 17 meshing connection with second rack 18 drive corresponding rotating rod 15 to rotate, when rotating rod 15 rotates, pawl 14 on rotating rod 15 deflects in turn, until the positioning block 20 on pull frame 19 is inserted between two groups of positioning frame 22, and under the action of second torsion spring 23 makes two groups of positioning frame 22 fix the position of positioning block 20 and pull frame 19, when second torsion spring 23 torsional force is greater than two groups of first torsion spring 16, when releasing the fixation of positioning block 20 and pull frame 19 of positioning frame 22, under the action of first torsion spring 16, two groups of rotating rod 15 rotate and restore original position, two groups of pawl 14 can be meshing connection with corresponding ratchet 13.
[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A coupling structure for connecting shafts of different diameters, characterized by: The utility model provides a kind of coupling (1), the two sides of the coupling (1) are equipped with two groups of symmetrically distributed mounting seat (2), the mounting seat (2) is equipped with mounting ring (4) inside, the mounting ring (4) is rotatably connected with mounting seat (2) by bearing, annular tooth (5) is fixedly installed on the mounting ring (4), three groups of annular distribution cover plate (3) are fixedly installed on the mounting seat (2), three groups of the sliding block (6) of annular distribution are equipped between the cover plate (3) and mounting seat (2), three groups of the sliding block (6) are meshed connection with mounting ring (4) by annular tooth (5), three groups of the clamping rod (11) are fixedly installed on the sliding block (6), three groups of the clamping rod (11) are fixedly installed on the clamping block (12), the mounting ring (4) is sleeved with gear ring (8), the first rack (9) is slidably installed in the mounting seat (2), the first rack (9) is meshed connection with gear ring (8), the mounting seat (2) is equipped with screw rod (10), the screw rod (10) upper end is sleeved with two groups of symmetrically distributed ratchet wheel (13), the mounting seat (2) is equipped with two groups of symmetrically distributed pawl (14), two groups of the pawl (14) are respectively correspondingly arranged with two groups of ratchet wheel (13), and two groups of the pawl (14) are respectively meshed connection with corresponding ratchet wheel (13).
2. A coupling structure for connecting shafts of different diameters according to claim 1, characterized in that: The cover plate (3) is provided with a sliding groove (7), and the sliding groove (7) is correspondingly arranged with the sliding block (6). The sliding block (6) is slidably connected with the cover plate (3) through the sliding groove (7).
3. A coupling structure for connecting shafts of different diameters according to claim 1, characterized in that: The screw rod (10) penetrates through the mounting seat (2) at both ends and is rotatably connected with the mounting seat (2) through bearings. The screw rod (10) penetrates through the first rack (9) and is threadedly connected with the rack.
4. A coupling structure for connecting shafts of different diameters according to claim 1, characterized in that: The two groups of pawls (14) are rotatably connected with the mounting seat (2) through the rotating rods (15). The rotating rods (15) are sleeved with first torsional springs (16). The two ends of the first torsional springs (16) are fixedly connected with the pawls (14) and the mounting seat (2), respectively. The rotating rods (15) are sleeved with gears (17). The mounting seat (2) is slidably installed with second racks (18).
5. A coupling structure for connecting shafts of different diameters according to claim 4, characterized in that: The second racks (18) are meshed connected with the corresponding gears (17). The two groups of second racks (18) are fixedly connected through pull frames (19). The pull frames (19) penetrate through the mounting seat (2) and are slidably connected with the mounting seat (2). The pull frames (19) are fixedly installed with positioning blocks (20).
6. A coupling structure for connecting shafts of different diameters according to claim 1, characterized in that: The mounting seat (2) is fixedly installed with a fixed rod (21). The fixed rod (21) is correspondingly arranged with the positioning block (20). The fixed rod (21) is rotatably sleeved with two groups of symmetrically distributed positioning racks (22). The two groups of positioning racks (22) are movably clamped with the positioning block (20).
7. A coupling structure for connecting shafts of different diameters according to claim 6, characterized in that: The fixed rod (21) is sleeved with two groups of symmetrically distributed second torsional springs (23). The two ends of the second torsional springs (23) are fixedly connected with the positioning racks (22) and the fixed rod (21), respectively.