Universal coupling

Abstract

The utility model discloses a universal coupling which comprises two coupling main bodies and a universal joint assembly, the two coupling main bodies are connected through the universal joint assembly, each coupling main body is composed of a first main body and a second main body, the opposite sides of the first main body and the second main body are respectively provided with a joint part, and the first main body and the second main body are connected through the joint parts. The first main body and the second main body are connected with each other through a joint part, and the total length of the first main body and the second main body is adjusted through the joint depth of the joint part; the joint part comprises a plurality of limiting grooves and a plurality of limiting arms, and the limiting grooves and the limiting arms are alternately arranged in the circumferential direction at equal intervals. According to the universal coupling, in the actual use process, the overall length of the coupling can be adjusted, so that the universal coupling can meet the installation requirement, the universal coupling is high in universality and flexible to operate, meanwhile, due to the usability adjusting capacity of the universal coupling, the number of prepared couplings is reduced, and the equipment cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a universal coupling. Background Art

[0002] The cross universal coupling, also known as the universal joint, is suitable for connecting two intersecting axes with a certain deviation in the axis and whose relative position changes frequently to transmit motion and torque. This coupling has the advantages of large power transmission and compact structure. The length of the universal coupling connecting with the shaft is fixed at this stage, and the overall length of the coupling is only divided by model. The length of the independent individual cannot be adjusted. When the positions of the two main parts to be connected are fixed, it is difficult to select a coupling with a completely suitable length model. The coupling with a length deviation is not stable enough when used, which will bring inconvenience to use. Based on the above problems, a universal coupling is proposed. Utility Model Content

[0003] The utility model aims to provide a universal coupling to solve the problem in the background art that the length of the connection part between the universal coupling and the shaft currently used is fixed and cannot be adjusted according to actual needs.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a universal coupling, comprising: two coupling bodies and a universal joint assembly, and the two coupling bodies are connected through the universal joint assembly, wherein the coupling body is composed of a first body and a second body, and the first body and the second body are respectively provided with joints on opposite sides, the first body and the second body are connected to each other through the joint, and the total length of the first body and the second body is adjusted by the depth of the joint between the two parts.

[0005] The joint portion comprises: a limiting groove and a limiting arm. The limiting groove and the limiting arm are in a plurality and are alternately and equidistantly arranged along the circumferential direction.

[0006] Preferably, the width of the limiting groove is matched with the width of the limiting arm, and the length of the free end of the limiting arm is matched with the inner cavity of the limiting groove.

[0007] Preferably, a sliding base is installed at the center position of the outer wall on the side opposite to the first body and the second body, a blind groove is opened on the outer wall on the side opposite to the first body, and the sliding base is slidably embedded in the inner cavity of the blind groove, and the axial length of the sliding base is adapted to the length of the free end of the limiting arm.

[0008] Preferably, a fixed seat is fixedly installed on the outer wall of the first main body, and a movable seat is fixedly installed on the outer wall of the second main body, and one end of a plurality of second lead screws are circumferentially penetrated through the outer wall of the movable seat, and one end of the first lead screw is rotatably installed on the other end of the second lead screw, and the outer wall of the other end of the first lead screw penetrates and extends out of the outer wall of the fixed seat, and the outer wall of the second lead screw is screwed with two nuts, and the two nuts are respectively located on the left and right sides of the movable seat, and a rotating cylinder is rotatably installed on the outer wall of the first main body, and the rotating cylinder is sleeved on the outside of the fixed seat, and a gear is installed on one end of the first lead screw penetrating the fixed seat, and the inner wall of the rotating cylinder is provided with internal teeth meshing with the gear, and the outer wall of the first lead screw is symmetrically screwed with two limit seats, and the limit seat is slidably sleeved on the outer wall of the coupling body, and the inner wall of the limit seat is in sliding contact with the coupling body.

[0009] Preferably, the threads on both sides of the outer wall of the first screw are positive and negative threads.

[0010] Preferably, the free end of the second body is provided with an axial hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the universal coupling adjusts its overall length with the first body by pulling the second body, and at the same time, through the joint between the two, it is ensured that there is no relative rotation between the two, the movable seat is fixed by two nuts, and the limiting of the limit arm can be guaranteed by the limiting of two limit seats. In actual use, the overall length of the coupling can be adjusted to adapt to installation requirements. The equipment has high versatility and flexible operation. At the same time, due to its ability to adjust for usability, the number of prepared couplings is reduced, saving equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the limiting arm of the utility model.

[0014] In the figure: 1, coupling body, 1a, first body, 1b, second body, 2, universal joint assembly, 3, limit groove, 4, limit arm, 5, sliding base, 6, fixed seat, 7, movable seat, 8, first lead screw, 8a, second lead screw, 9, rotating cylinder, 10, internal teeth, 11, gear, 12, shaft hole, 13, limit seat, 14, nut. DETAILED DESCRIPTION

[0015] 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 in 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.

[0016] See also Figure 1 and 2 The utility model provides a universal coupling technical solution: a universal coupling, comprising: two coupling bodies 1 and a universal joint assembly 2, and the two coupling bodies 1 are connected through the universal joint assembly 2, the universal joint assembly 2 is an existing device, and is a component capable of realizing variable-angle power transmission, wherein the coupling body 1 is composed of a first body 1a and a second body 1b, the free end of the second body 1b is provided with an axial hole 12, the inner wall of the axial hole 12 can be provided with a spline keyway according to requirements, so as to meet the installation requirements of the external device shaft, the first body 1a and the second body 1b are respectively provided with a joint on the opposite side, the first body 1a and the second body 1b are connected to each other through the joint, and the two are joined The depth of the joint is used to adjust the total length of the first body 1a and the second body 1b. At the same time, during the adjustment of the joint, it can be ensured that there is no relative rotation between the first body 1a and the second body 1b, wherein: the joint includes: a limit groove 3 and a limit arm 4. The number of the limit grooves 3 and the limit arm 4 is several, and they are alternately arranged at equal intervals along the circumferential direction. The width of the limit groove 3 is adapted to the width of the limit arm 4, and the length of the free end of the limit arm 4 is adapted to the inner cavity of the limit groove 3. The three limit arms 4 of the limit grooves on the outer walls of the opposite sides of the first body 1a and the second body 1b are staggered and can be slidably connected to each other. When the limit arm 4 is inserted into the inner cavity of the limit groove 3, the first body 1a and the second body 1b can be prevented from rotating relative to each other.

[0017] After the total length of the first body 1a and the second body 1b is adjusted, in order to fix the first body 1a and the second body 1b, the following scheme is proposed: the outer wall of the first body 1a is fixedly installed with a fixed seat 6, the outer wall of the second body 1b is fixedly installed with a movable seat 7, the outer wall circumference of the movable seat 7 is circumferentially penetrated by one end of several second lead screws 8a, the other end of the second lead screw 8a is rotatably installed with one end of the first lead screw 8, the outer wall of the other end of the first lead screw 8 penetrates and extends out of the outer wall of the fixed seat 6, the outer wall of the second lead screw 8a is screwed with two nuts 14, and the two nuts 14 are respectively located on the left and right sides of the movable seat 7, moving the second body 1b can change the relative position of the movable seat 7 and the second lead screw 8a, and the relative position of the movable seat 7 and the second lead screw 8a can be locked by rotating the nut 14. For the position, a rotating drum 9 is rotatably installed on the outer wall of the first main body 1a, and the rotating drum 9 is sleeved on the outer side of the fixed seat 6. A gear 11 is installed on one end of the first lead screw 8 that passes through the fixed seat 6. The inner wall of the rotating drum 9 is provided with internal teeth 10 that mesh with the gear 11. The rotating rotating drum 9 can drive the gear 11 to rotate through the internal teeth 10, thereby causing the first lead screw 8 to rotate. Among them, the outer wall of the first lead screw 8 has positive and negative threads on both sides, and the outer wall of the first lead screw 8 is symmetrically threaded with two limit seats 13, which are slidably sleeved on the outer wall of the coupling body 1, and the inner wall of the limit seat 13 is in sliding contact with the coupling body 1. When the first lead screw 8 rotates, the two limit seats 13 can be moved closer to or farther away from each other, and then the limit seat 13 is used to cover the limit arm 4 to ensure the stability of the limit arm 4.

[0018] As a preferred solution, further, a sliding base 5 is installed at the center position of the outer wall on the opposite side of the first main body 1a and the second main body 1b, a blind groove is opened on the outer wall on the opposite side of the second main body 1b and the first main body 1a, and the sliding base 5 is slidably embedded in the inner cavity of the blind groove, and the axial length of the sliding base 5 is adapted to the length of the free end of the limiting arm 4. By utilizing the cooperation of the sliding base 5 and the blind groove, the sliding base 5 can be utilized to provide support force, disperse the force acting on the limiting groove 3 and the limiting arm 4 when the equipment is working and rotating, and ensure stability. At the same time, the sliding base 5 and the blind groove can be set to a prism shape to further improve stability.

[0019] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0020] When in use, the output end of the power output device to be connected, such as a motor, is plugged into the axial hole 12 of one of the second bodies 1b, and the axial hole 12 of the other second body 1b is plugged into the shaft of the external device. When the length of the device needs to be adjusted, the nut 14 is rotated to make the two nuts 14 move away from the outer wall of the movable seat 7 respectively, and then the second body 1b is pulled to increase its overall length with the first body 1a. During this process, the limit arm 4 slides in the inner cavity of the limit groove 3, while the first body 1a and the second body 1b remain stable to avoid relative rotation. Then the two nuts 14 are screwed to fix the movable seat 7. At this time, the length between the first body 1a and the second body 1b is fixed, and then the rotating drum 9 is rotated to make the inner teeth 10 drive the gear 11 to rotate, thereby making the first screw 8 rotate, ensuring that the two limit seats 13 move the outer wall of the shielding limit arm 4 respectively, and limit the limit arm 4. In actual use, the length of the device body can be adjusted. When the device to be connected is fixed, the length of the coupling itself can be adjusted for adaptive adjustment to meet the use requirements.

[0021] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "center position", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly specified and limited, the terms "snapping", "plugging", "welding", "installation", "setting", "interference fit", "screw connection", "pin connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A universal coupling, characterized in that: include: Two coupling bodies (1) and a universal joint assembly (2), wherein the two coupling bodies (1) are connected via the universal joint assembly (2), wherein the coupling body (1) consists of a first body (1a) and a second body (1b), and the first body (1a) and the second body (1b) are provided with joints on opposite sides thereof, respectively, and the first body (1a) and the second body (1b) are connected to each other via the joints, and the total length of the first body (1a) and the second body (1b) is adjusted by the depth of the joints between the two joints; The joint portion comprises: a limiting groove (3) and a limiting arm (4); the limiting groove (3) and the limiting arm (4) are multiple in number and are alternately arranged at equal intervals along the circumferential direction.

2. A universal coupling according to claim 1, characterized in that: The width of the limiting groove (3) matches the width of the limiting arm (4), and the length of the free end of the limiting arm (4) matches the inner cavity of the limiting groove (3).

3. A universal coupling according to claim 2, characterized in that: A sliding base (5) is installed at the center position of the outer wall on the side opposite to the first body (1a) and the second body (1b), a blind groove is provided on the outer wall on the side opposite to the first body (1a), and the sliding base (5) is slidably embedded in the inner cavity of the blind groove, and the axial length of the sliding base (5) is adapted to the length of the free end of the limiting arm (4).

4. A universal coupling according to claim 3, characterized in that: A fixed seat (6) is fixedly mounted on the outer wall of the first body (1a), and a movable seat (7) is fixedly mounted on the outer wall of the second body (1b). One end of a plurality of second lead screws (8a) are circumferentially penetrated through the outer wall of the movable seat (7). One end of the first lead screw (8) is rotatably mounted on the other end of the second lead screw (8a). The outer wall of the other end of the first lead screw (8) penetrates and extends out of the outer wall of the fixed seat (6). Two nuts (14) are screwed onto the outer wall of the second lead screw (8a), and the two nuts (14) are respectively located on the outer wall of the movable seat (7). ), a rotating cylinder (9) is rotatably mounted on the outer wall of the first main body (1a), and the rotating cylinder (9) is sleeved on the outer side of the fixed seat (6); the first lead screw (8) passes through the fixed seat (6) and is mounted on one end thereof with a gear (11); the inner wall of the rotating cylinder (9) is provided with internal teeth (10) meshing with the gear (11); the outer wall of the first lead screw (8) is symmetrically threaded with two limit seats (13); the limit seats (13) are slidably sleeved on the outer wall of the coupling body (1), and the inner wall of the limit seat (13) is in sliding contact with the coupling body (1).

5. A universal coupling according to claim 4, characterized in that: The outer wall of the first lead screw (8) has threads on both sides that are positive and negative threads.

6. A universal coupling according to any one of claims 1 to 5, characterized in that: The free end of the second main body (1b) is provided with an axial hole (12).

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