High-precision positioning coupling

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a high-precision positioning coupler which comprises a first half coupler body, a connecting ring is fixedly connected to the right end of the first half coupler body, a second half coupler body is fixedly connected to the right end of the connecting ring, a centering disc is arranged in the connecting ring, a threaded groove is formed in the surface of the centering disc, and the second half coupler body is fixedly connected to the right end of the connecting ring. The centering disc is fixedly connected with the connecting ring, the connecting ring is fixedly connected with the centering disc, an elastic pre-tightening mechanism is arranged in the connecting ring, each threaded rod is arranged in the connecting ring, and the right end of each threaded rod is fixedly connected with an adjusting rod. When slight axial deviation or radial deviation exists in two shafts, self-adaption compensation errors are achieved through spring deformation, meanwhile, uniform distribution of pretightening force in the axial direction of a transmission shaft is kept, and the problems that vibration is intensified and transmission precision is reduced due to uneven stress of a traditional coupler are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical transmission technical field, concretely is a kind of high-precision positioning coupling. BACKGROUND

[0002] In industrial transmission system, coupling is as the key component of connecting two shafts and transmitting motion and torque, its performance directly influences the stability, accuracy and reliability of entire transmission system, with the increasing requirement of modern industry to equipment accuracy, efficiency and operation stability, traditional coupling gradually exposes many deficiencies in coping with complex working condition's axial displacement, radial deviation and dynamic error compensation etc., difficult to meet the high-precision transmission demand.

[0003] Traditional coupling lacks effective compensation mechanism for dynamic error between two shafts in structural design, when two shafts cause axial displacement and radial deviation due to manufacturing error, installation deviation or heat deformation, load change etc. Utility model content

[0004] The utility model aims at providing a kind of high-precision positioning coupling to solve the problems raised in the above background.

[0005] The technical scheme of the utility model is: a kind of high-precision positioning coupling, including half coupling one, the right end of half coupling one is fixedly connected with connecting ring, the right end of connecting ring is fixedly connected with half coupling two, the centering disc is arranged in connecting ring, the surface of the centering disc is equipped with thread groove, the elastic pre-tightening mechanism is arranged in connecting ring, each screw rod is arranged in connecting ring, the right end of each screw rod is fixedly connected with adjusting rod, the surface of each adjusting rod is equipped with spring.

[0006] Preferably, the elastic pre-tightening mechanism further includes a plurality of symmetrically arranged gears, each gear is fixedly connected with the end of the corresponding screw rod away from the spring, a plurality of gears are meshingly connected with the same gear ring, and the surface of the gear ring is fixedly connected with the rotating ring.

[0007] Preferably, the surface of the connecting ring is provided with a plurality of symmetrically arranged threaded holes, and one end of each of the threaded rods away from the spring penetrates the inner wall of the corresponding threaded hole and extends to the outside of the connecting ring, and each of the threaded holes is in surface threaded connection with the corresponding threaded rod.

[0008] Preferably, each of the threaded rods is in threaded connection with the inner wall of the corresponding threaded groove, one end of each of the springs is fixedly connected with the right end of the threaded rod, and the other end of each of the springs is fixedly connected with the surface of the centering disc.

[0009] Preferably, the surface of the rotating ring is fixedly connected with a rotating handle, the rotating ring is sleeved on the surface of the connecting ring, and the rotating ring is in rotating connection with the surface of the connecting ring.

[0010] Preferably, the half-coupling, the connecting ring, the half-coupling and the centering disc are coaxially arranged.

[0011] The utility model discloses an improved high-precision positioning coupling, which has the following improvements and advantages compared with the prior art.

[0012] Firstly, the utility model discloses a half-coupling, a connecting ring and a centering disc are coaxially linked, and the elastic adjustment mechanism of spring pre-tightening force is combined, so that when there is slight axial deviation or radial deviation between two shafts, the spring deformation can be used to adaptively compensate errors, the direction pre-tightening force of the transmission shaft is uniformly distributed, and the problem of vibration intensification and transmission precision reduction caused by uneven force of the traditional coupling is effectively solved.

[0013] Secondly, the utility model discloses that the gear ring and the symmetrically distributed threaded rod group are cooperatively driven, synchronous adjustment and dynamic balance of multiple spring pre-tightening forces are realized, when compensating the angular deviation between two shafts, the centering disc displacement amount can be accurately controlled through the cooperation of the threaded groove and the adjusting rod, and the impact load caused by unilateral pre-tightening force mutation can be avoided, so that the transmission stability and fatigue life under complex working conditions are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in connection with the drawings and embodiments:

[0015] Figure 1 It is the main structure schematic diagram of the utility model;

[0016] Figure 2 It is the connecting ring structure schematic diagram of the utility model;

[0017] Figure 3 It is the threaded groove structure schematic diagram of the utility model;

[0018] Figure 4 It is the centering disc structure schematic diagram of the utility model;

[0019] Figure 5 is the threaded rod structure schematic diagram of the utility model;

[0020] Figure 6 is the adjusting rod structure schematic diagram of the utility model.

[0021] Mark explanation:

[0022] 1, half coupling one;2, connecting ring;3, half coupling two;4, centering disc;5, threaded groove;6, threaded rod;7, spring;8, gear;9, gear ring;10, rotating ring;11, threaded hole;12, rotating handle;13, adjusting rod. Specific implementation

[0023] The utility model is described in detail below, and the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.

[0024] The utility model improves a kind of high-precision positioning coupling, and the technical scheme of the utility model is:

[0025] As shown in Figure 1 - Figure 6 A kind of high-precision positioning coupling, including half coupling one 1, the right end of half coupling one 1 is fixedly connected with connecting ring 2, the right end of connecting ring 2 is fixedly connected with half coupling two 3, connecting ring 2 is provided with centering disc 4, threaded groove 5 is set on the surface of centering disc 4, connecting ring 2 is provided with elastic pre-tightening mechanism, and elastic pre-tightening mechanism includes multiple symmetrically arranged threaded rods 6, each threaded rod 6 is arranged in connecting ring 2, the right end of each threaded rod 6 is fixedly connected with adjusting rod 13, and the surface of each adjusting rod 13 is sleeved with spring 7.

[0026] Further, elastic pre-tightening mechanism further includes multiple symmetrically arranged gears 8, each gear 8 is fixedly connected with the end of corresponding threaded rod 6 away from spring 7, multiple gears 8 are meshingly connected with same gear ring 9, the surface of gear ring 9 is fixedly connected with rotating ring 10, by being provided with gear ring 9, when gear ring 9 rotates, by meshing, drive all gears 8 to rotate synchronously, to drive all threaded rods 6 to rotate, threaded rod 6 drives adjusting rod 13 to rotate in threaded groove 5, and the distance between threaded rod 6 and centering disc 4 will be adjusted, when threaded rod 6 drives adjusting rod 13 to rotate and moves, gear 8 is meshed with gear ring 9 and rotates on one side, and is close to or away from the center of centering disc 4 on the inner wall of gear ring 9.

[0027] Further, the surface of the connecting ring 2 is provided with a plurality of symmetrically arranged threaded holes 11, and the end of each threaded rod 6 away from the spring 7 penetrates the inner wall of the corresponding threaded hole 11 and extends to the outside of the connecting ring 2, and each threaded hole 11 is threadedly connected with the surface of the corresponding threaded rod 6, and when the gear 8 drives the threaded rod 6 to rotate, the threaded rod 6 can move in the threaded hole 11 due to the threaded connection between the threaded rod 6 and the threaded hole 11.

[0028] Further, each threaded rod 6 is threadedly connected with the inner wall of the corresponding threaded groove 5, one end of each spring 7 is fixedly connected with the right end of the threaded rod 6, and the other end of each spring 7 is fixedly connected with the surface of the centering disc 4, and when the threaded rod 6 and the adjusting rod 13 adjust the distance between the threaded rod 6 and the centering disc 4 by rotating, the spring 7 is compressed or stretched, so as to adjust the pre-tightening force of the spring 7.

[0029] Further, the surface of the rotating ring 10 is fixedly connected with a rotating handle 12, the rotating ring 10 is sleeved on the surface of the connecting ring 2, and the rotating ring 10 is rotatably connected with the surface of the connecting ring 2, and by arranging the rotating handle 12, rotating the rotating handle 12 can make the rotating ring 10 rotate, and the rotating of the rotating ring 10 drives the gear ring 9 to rotate.

[0030] Further, the half-coupling one 1, the connecting ring 2, the half-coupling two 3 and the centering disc 4 are coaxially arranged, and the coaxial arrangement can ensure the transmission concentricity and make the elastic pre-tightening force always uniformly transmitted along the axial direction.

[0031] Working principle: in use, the rotating handle 12 drives the rotating ring 10 to rotate the gear ring 9, so that all the symmetrically distributed gears 8 rotate synchronously and drive the threaded rods 6 to move along the threaded holes 11 and the adjusting rods 13 to move along the threaded grooves 5 of the centering disc 4, and the space position of the centering disc 4 is adjusted in real time through the compression or stretching deformation of the spring 7, under the premise that the half-coupling one 1, the connecting ring 2, the half-coupling two 3 and the centering disc 4 are coaxial, the elastic pre-tightening force of the spring 7 is used to adaptively compensate the axial offset and the radial deviation between the two shafts, and the precise cooperation of the gear 8 and the threaded transmission is used to realize the synchronous and uniform distribution of the multi-directional compensation force, so as to ensure that the elastic pre-tightening force is always stably transmitted along the axial direction in the transmission process, so as to achieve the double control of dynamic error compensation and transmission concentricity.

[0032] The above description enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-precision positioning coupling comprising a half-coupling one (1), characterized in that: The right end of the half-coupling one (1) is fixedly connected with a connecting ring (2), the right end of the connecting ring (2) is fixedly connected with a half-coupling two (3), the connecting ring (2) is provided with a centering disc (4), the surface of the centering disc (4) is provided with a threaded groove (5), the connecting ring (2) is provided with an elastic pre-tightening mechanism, the elastic pre-tightening mechanism comprises a plurality of symmetrically arranged threaded rods (6), each threaded rod (6) is arranged in the connecting ring (2), the right end of each threaded rod (6) is fixedly connected with an adjusting rod (13), and the surface of each adjusting rod (13) is sleeved with a spring (7).

2. A high precision positioning coupling according to claim 1, characterized in that: The elastic pre-tightening mechanism further comprises a plurality of symmetrically arranged gears (8), each gear (8) is fixedly connected with the end of the corresponding threaded rod (6) away from the spring (7), a plurality of gears (8) are meshedly connected with a same gear ring (9), and the surface of the gear ring (9) is fixedly connected with a rotating ring (10).

3. A high precision positioning coupling according to claim 1, characterized in that: The surface of the connecting ring (2) is provided with a plurality of symmetrically arranged threaded holes (11), one end of each threaded rod (6) away from the spring (7) penetrates the inner wall of the corresponding threaded hole (11) and extends to the outside of the connecting ring (2), and each threaded hole (11) is in threaded connection with the surface of the corresponding threaded rod (6).

4. A high precision positioning coupling according to claim 1, characterized in that: Each threaded rod (6) is in threaded connection with the inner wall of the corresponding threaded groove (5), one end of each spring (7) is fixedly connected with the right end of the threaded rod (6), and the other end of each spring (7) is fixedly connected with the surface of the centering disc (4).

5. A high precision positioning coupling according to claim 2, characterized in that: The surface of the rotating ring (10) is fixedly connected with a rotating handle (12), the rotating ring (10) is sleeved on the surface of the connecting ring (2), and the rotating ring (10) is in rotating connection with the surface of the connecting ring (2).

6. A high precision positioning coupling according to claim 1, characterized in that: The half-coupling one (1), the connecting ring (2), the half-coupling two (3) and the centering disc (4) are coaxially arranged.

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