Multi-section telescopic anti-falling universal joint coupling

Abstract

The utility model discloses a multi-section telescopic anti-falling universal joint coupling which comprises a first universal joint, a second universal joint and a transmission shaft, and is characterized in that the transmission shaft comprises a connecting shaft, a first transmission sleeve, a second transmission sleeve and a transmission rod which are connected in sequence; the second end of the first transmission sleeve is sleeved on the first end of the second transmission sleeve, the first end of the second transmission sleeve is correspondingly provided with a first transmission end part, and the outer diameter of the first transmission end part is matched with the inner diameter of the first transmission sleeve to form transmission connection around the axial direction and sliding connection along the axial direction; the second end of the second transmission sleeve is arranged at the first end of the transmission rod in a sleeved mode, a second transmission end is correspondingly arranged at the first end of the transmission rod, and the outer diameter of the second transmission end is matched with the inner diameter of the second transmission sleeve to form transmission connection around the axial direction and sliding connection in the axial direction. And the second end of the transmission rod is fixedly connected with the end part of the second universal joint.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a multi-section telescopic anti-dropping universal joint coupling. Background Art

[0002] The universal joint coupling currently available in the market is composed of universal joints at both ends connected by a telescopic transmission shaft. Its adjustable length range is limited, its structure is relatively complex, and its manufacturing cost is high. Summary of the invention

[0003] The utility model aims to provide a multi-section telescopic anti-dropping universal joint coupling to increase the adjustable length range, make the distance of the coupling apart longer, and the distance of the coupling contracted smaller, so as to realize the free adjustment of the axis spacing within the effective distance.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-section telescopic anti-detachment universal joint coupling, including a first universal joint, a second universal joint and a transmission shaft connected therebetween, the transmission shaft including a connecting shaft, a first transmission sleeve, a second transmission sleeve and a transmission rod connected in sequence; the first end of the connecting shaft is fixedly connected to the end of the first universal joint, and the second end thereof is fixedly connected to the first end of the first transmission sleeve, the second end of the first transmission sleeve is sleeved on the first end of the second transmission sleeve, and the first end of the second transmission sleeve is correspondingly provided with a first transmission end portion, the outer diameter of the first transmission end portion is the same as that of the first transmission sleeve. The inner diameters of the first transmission sleeve match to form an axial transmission connection and an axial sliding connection, and a first stop ring is provided on the port of the first transmission sleeve corresponding to the first transmission end; the second end of the second transmission sleeve is sleeved on the first end of the transmission rod, and the first end of the transmission rod is provided with a second transmission end correspondingly, and the outer diameter of the second transmission end matches the inner diameter of the second transmission sleeve to form an axial transmission connection and an axial sliding connection, and a second stop ring is provided on the port of the second transmission sleeve corresponding to the second transmission end, and the second end of the transmission rod is fixedly connected to the end of the second universal joint.

[0005] In the above solution, the first transmission end has a polygonal outer diameter, and the inner diameter of the first transmission sleeve is also a corresponding polygon. Further, the outer diameter of the first transmission end is a regular hexagon, and the inner diameter of the first transmission sleeve is also a corresponding regular hexagon.

[0006] In the above solution, the second transmission end has a polygonal outer diameter, and the inner diameter of the second transmission sleeve is also a corresponding polygon. Further, the outer diameter of the second transmission end is a regular hexagon, and the inner diameter of the second transmission sleeve is also a corresponding regular hexagon.

[0007] In the above solution, the outer diameter of the first transmission end portion and the inner diameter of the first transmission sleeve are connected via a spline and a spline sleeve.

[0008] In the above solution, the outer diameter of the second transmission end and the inner diameter of the second transmission sleeve are connected via a spline and a spline sleeve.

[0009] In the above scheme, by changing the diameter size of the first transmission sleeve and the second transmission sleeve and increasing the number of the second transmission sleeve, a telescopic anti-dropping transmission with more than three sections is realized.

[0010] In the above solution, the first anti-slip ring is fixed to one end of the first transmission sleeve, and its inner diameter is smaller than the outer diameter opposite side dimension of the first transmission end portion and larger than the outer diameter dimension of the second transmission sleeve.

[0011] In the above solution, the second anti-slip ring is fixed to one end of the second transmission sleeve, and its inner diameter is smaller than the outer diameter opposite side dimension of the second transmission end portion and larger than the outer diameter dimension of the transmission rod.

[0012] The working principle and advantages of this utility model are as follows:

[0013] The utility model discloses a multi-section telescopic anti-dropping universal joint coupling, which has the advantages of flexible steering, large adjustable angle, longer distance for pulling apart the coupling and smaller distance for shrinking the coupling, and anti-dropping retaining ring at the end of each section of the sleeve. In actual use, the shaft spacing can be freely adjusted by any shrinkage within the effective distance, and can be widely used in transmission systems of various mechanical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a perspective stereoscopic schematic diagram of the structure of the first embodiment of the utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the appearance of the structure of the first embodiment of the utility model;

[0016] Figure 3 This is a structural schematic diagram of a first transmission sleeve in Embodiment 1 of the utility model;

[0017] Figure 4 This is a structural schematic diagram of the second transmission sleeve of the first embodiment of the utility model;

[0018] Figure 5 This is a schematic structural diagram of a transmission rod in Embodiment 1 of the utility model;

[0019] Figure 6 It is a perspective stereoscopic schematic diagram of the structure of the second embodiment of the utility model;

[0020] Figure 7 This is a three-dimensional schematic diagram of the appearance of the structure of the second embodiment of the utility model;

[0021] Figure 8 This is a schematic structural diagram of a first transmission sleeve according to Embodiment 3 of the present utility model;

[0022] Fig. 9 This is a schematic structural diagram of a second transmission sleeve according to Embodiment 3 of the present utility model;

[0023] Fig.10 This is a schematic diagram of the structure of the transmission rod of the third embodiment of the present utility model.

[0024] In the above figures: 1. first universal joint; 2. connecting shaft; 3. first transmission sleeve; 4. second transmission sleeve; 5. transmission rod; 6. second universal joint; 7. second universal joint fixing screw; 8. second anti-breakaway retaining ring; 9. second transmission end; 10. first anti-breakaway retaining ring; 11. first transmission end; 12. connecting shaft fixing screw; 13. first universal joint fixing screw. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0026] The present invention will be clearly described below with drawings and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0027] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0028] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0029] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0030] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0031] The terms "front", "back", "upper" and "lower" used in this article are directional terms. In this case, they are only used to illustrate the positional relationship between the structures and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0032] Example 1: See Figures 1 to 5 As shown:

[0033] A multi-section telescopic anti-dropping universal joint coupling comprises a first universal joint 1, a second universal joint 6 and a transmission shaft connected therebetween.

[0034] like Figure 1 and Figure 2 As shown, the transmission shaft comprises a connecting shaft 2, a first transmission sleeve 3, a second transmission sleeve 4 and a transmission rod 5 which are connected in sequence. The first end of the connecting shaft 2 is fixedly connected to the end of the first universal joint 1, and the second end thereof is fixedly connected to the first end of the first transmission sleeve 3. The second end of the first transmission sleeve 3 is sleeved on the first end of the second transmission sleeve 4, and the first end of the second transmission sleeve 4 is correspondingly provided with a first transmission end 11, the outer diameter of the first transmission end 11 matches the inner diameter of the first transmission sleeve 3 to form an axial transmission connection and an axial sliding connection, and a first anti-slip retaining ring 10 is provided on the port of the first transmission sleeve 3 corresponding to the first transmission end 11. The second end of the second transmission sleeve 4 is sleeved on the first end of the transmission rod 5, and a second transmission end 9 is correspondingly provided on the first end of the transmission rod 5. The outer diameter of the second transmission end 9 matches the inner diameter of the second transmission sleeve 4 to form an axial transmission connection and an axial sliding connection. A second anti-slip ring 8 is provided on the port of the second transmission sleeve 4 corresponding to the second transmission end 9, and the second end of the transmission rod 5 is fixedly connected to the end of the second universal joint 6.

[0035] Specifically, the first transmission end portion 11 has a polygonal outer diameter, and the inner diameter of the first transmission sleeve 3 is also a corresponding polygon. Figure 3 and Figure 4 For example, preferably, the outer diameter of the first transmission end portion 11 is a regular hexagon, and the inner diameter of the first transmission sleeve 3 is also a corresponding regular hexagon.

[0036] Specifically, the second transmission end portion 9 has a polygonal outer diameter, and the inner diameter of the second transmission sleeve 4 is also a corresponding polygon. Figure 5 For example, preferably, the outer diameter of the second transmission end portion 9 is a regular hexagon, and the inner diameter of the second transmission sleeve 4 is also a corresponding regular hexagon.

[0037] like Figure 1 As shown, the first end of the connecting shaft 2 is fixedly connected to the end of the first universal joint 1, specifically fixed by a first universal joint fixing screw 13 arranged in the radial direction. The second end of the connecting shaft 2 is fixedly connected to the first end of the first transmission sleeve 3, specifically fixed by a connecting shaft fixing screw 12 arranged in the radial direction. The second end of the transmission rod 5 is fixedly connected to the end of the second universal joint 6, specifically fixed by a second universal joint fixing screw 7. The above is an example, and other fixing methods may also be used in practice, such as welding.

[0038] The first anti-slip ring 10 is fixed at one end of the first transmission sleeve 3 , and its inner diameter is smaller than the outer diameter opposite side dimension of the first transmission end portion 11 , and larger than the outer diameter dimension of the second transmission sleeve 4 .

[0039] When the second end of the first transmission sleeve 3 is assembled with the first end of the second transmission sleeve 4, the first end of the second transmission sleeve 4 is firstly embedded into the port of the second end of the first transmission sleeve 3, and then the first anti-slip ring 10 is welded and fixed on the port.

[0040] The second anti-slip ring 8 is fixed to one end of the second transmission sleeve 4 , and its inner diameter is smaller than the outer diameter opposite side dimension of the second transmission end portion 9 , and larger than the outer diameter dimension of the transmission rod 5 .

[0041] When the second end of the second transmission sleeve 4 is assembled with the first end of the transmission rod 5, the first end of the transmission rod 5 is firstly embedded into the port of the second end of the second transmission sleeve 4, and then the second anti-slip ring 8 is welded and fixed on the port.

[0042] When in use, when the transmission spacing is relatively long, the multi-section telescopic anti-detachment universal joint coupling of this embodiment can be stretched for use, and when the transmission spacing is relatively short, the multi-section telescopic anti-detachment universal joint coupling of this embodiment can be retracted for use. When the transmission rotates, the second universal joint 6 drives the transmission rod 5 to rotate, the transmission rod 5 drives the second transmission sleeve 4 to rotate through the second transmission end 9, the second transmission sleeve 4 drives the first transmission sleeve 3 to rotate through the first transmission end 11, and the first transmission sleeve 3 drives the first universal joint 1 to rotate through the connecting shaft 2.

[0043] When the transmission distance is very short, the diameter of the first transmission sleeve 3 can be changed, the second transmission sleeve 4 can be removed, and the first transmission sleeve 3 can be directly connected to the transmission rod 5 by sleeve connection.

[0044] In the above embodiments, the first universal joint and the second universal joint may adopt existing universal joint structures, such as a cross universal joint, a spherical universal joint, a quick-release universal joint, and the like.

[0045] In this embodiment, the distance of the coupling being opened is longer, and the distance of the coupling being contracted is smaller. There is a stop ring at the end of each sleeve section. In actual use, the shaft spacing can be freely adjusted by any contraction within the effective distance, and can be widely used in transmission systems of various mechanical equipment.

[0046] Example 2: See Figure 6 and Figure 7 As shown:

[0047] A multi-section telescopic anti-drop universal joint coupling comprises a first universal joint 1, a second universal joint 6 and a transmission shaft connected therebetween, wherein the transmission shaft comprises a connecting shaft 2, a first transmission sleeve 3, a second transmission sleeve 4 and a transmission rod 5 connected in sequence; the difference from the first embodiment is that:

[0048] When the transmission spacing changes greatly, the diameter size of the first transmission sleeve 3 and the second transmission sleeve 4 can be changed and the number of the second transmission sleeve 4 can be increased to achieve more than three-section telescopic anti-slip transmission, which can meet the needs of different transmission spacings in different application scenarios.

[0049] The rest is the same as implementation 1 and will not be described here.

[0050] Example 3: See Figures 8-10 As shown:

[0051] A multi-section telescopic anti-drop universal joint coupling comprises a first universal joint 1, a second universal joint 6 and a transmission shaft connected therebetween, wherein the transmission shaft comprises a connecting shaft 2, a first transmission sleeve 3, a second transmission sleeve 4 and a transmission rod 5 connected in sequence; the difference from the first embodiment is that:

[0052] The outer diameter of the first transmission end 11 and the inner diameter of the first transmission sleeve 3 are specifically connected by a spline and a spline sleeve, and the outer diameter of the second transmission end 9 and the inner diameter of the second transmission sleeve 4 are also connected by a spline and a spline sleeve. Due to the large number of spline contact surfaces, the torque is greater, the operation is smoother, and a good power transmission and sliding telescopic effect can be achieved.

[0053] The rest is the same as implementation 1 and will not be described here.

[0054] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-section telescopic anti-drop universal joint coupling, comprising a first universal joint (1), a second universal joint (6) and a transmission shaft connected therebetween, characterized in that: The transmission shaft comprises a connecting shaft (2), a first transmission sleeve (3), a second transmission sleeve (4) and a transmission rod (5) which are connected in sequence; the first end of the connecting shaft (2) is fixedly connected to the end of the first universal joint (1), and the second end thereof is fixedly connected to the first end of the first transmission sleeve (3); the second end of the first transmission sleeve (3) is sleeved on the first end of the second transmission sleeve (4), and the first end of the second transmission sleeve (4) is correspondingly provided with a first transmission end portion (11); the outer diameter of the first transmission end portion (11) matches the inner diameter of the first transmission sleeve (3) to form a transmission connection around the axial direction and a sliding connection along the axial direction, A first stop ring (10) is provided on a port of the first transmission sleeve (3) corresponding to the first transmission end portion (11); the second end of the second transmission sleeve (4) is sleeved on the first end of the transmission rod (5); a second transmission end portion (9) is provided on the first end of the transmission rod (5); the outer diameter of the second transmission end portion (9) matches the inner diameter of the second transmission sleeve (4) to form an axial transmission connection and an axial sliding connection; a second stop ring (8) is provided on a port of the second transmission sleeve (4) corresponding to the second transmission end portion (9); and the second end of the transmission rod (5) is fixedly connected to the end of the second universal joint (6).

2. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The first transmission end portion (11) has a polygonal outer diameter, and the inner diameter shape of the first transmission sleeve (3) is also a corresponding polygon.

3. The multi-section telescopic anti-drop universal joint coupling according to claim 2, characterized in that: The outer diameter of the first transmission end portion (11) is a regular hexagon, and the inner diameter of the first transmission sleeve (3) is also a corresponding regular hexagon.

4. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The second transmission end portion (9) has a polygonal outer diameter, and the inner diameter shape of the second transmission sleeve (4) is also a corresponding polygon.

5. The multi-section telescopic anti-drop universal joint coupling according to claim 4, characterized in that: The outer diameter of the second transmission end portion (9) is a regular hexagon, and the inner diameter of the second transmission sleeve (4) is also a corresponding regular hexagon.

6. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The outer diameter of the first transmission end (11) and the inner diameter of the first transmission sleeve (3) are connected via a spline and a spline sleeve.

7. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The outer diameter of the second transmission end (9) and the inner diameter of the second transmission sleeve (4) are connected via a spline and a spline sleeve.

8. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: By changing the diameters of the first transmission sleeve (3) and the second transmission sleeve (4), and increasing the number of the second transmission sleeves (4), a multi-section telescopic anti-dropping transmission with more than three sections is achieved.

9. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The first anti-slip retaining ring (10) is fixed to one end of the first transmission sleeve (3), and its inner diameter is smaller than the outer diameter opposite side dimension of the first transmission end portion (11) and larger than the outer diameter dimension of the second transmission sleeve (4).

10. The multi-section telescopic anti-drop universal joint coupling according to claim 1, characterized in that: The second anti-slip ring (8) is fixed to one end of the second transmission sleeve (4), and its inner diameter is smaller than the outer diameter of the second transmission end (9) and larger than the outer diameter of the transmission rod (5).

Images