Universal joint pin universal coupling

Abstract

The utility model discloses a universal joint pin universal coupling, which relates to the technical field of couplings and comprises two groups of connecting seats and two groups of connecting flanges, and shaft forks are fixedly arranged on the sides, close to each other, of the connecting seats and the connecting flanges. According to the transmission device, the connecting base and the connecting flange are arranged, the shaft forks are arranged between the connecting base and the connecting flange, the supporting shaft and the transmission shaft are arranged between the two shaft forks, and the supporting shaft and the transmission shaft form a cross shaft structure, so that the transmission effect is achieved; the transmission shaft is arranged in the round hole in a penetrating mode, in the using process of the device, friction can be generated between the supporting shaft and the transmission shaft, so that the friction degree among the supporting shaft, the transmission shaft and the shaft fork is reduced, the protection effect on the universal coupling is achieved, and the service life of the universal coupling is prolonged.

Description

Technical Field

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

[0002] The universal joint shaft utilizes the characteristics of its mechanism to make the two shafts that are not on the same axis and can achieve continuous rotation of the two connected shafts when there is an angle between the axes, and reliably transmit torque and motion. The biggest feature of the universal joint shaft is that its structure has a large angular compensation ability, compact structure, high transmission efficiency, and the angle between the two axes of universal joint shafts of different structural types is different, generally between 5°-45°.

[0003] The coiler is an auxiliary equipment in a rolling mill that coils hot-rolled or cold-rolled steel into a coil. It is arranged after the finished product stand on hot strip mills (hot rolling mills), cold strip mills and wire rod mills; it is installed before and after the mill on single-stand reversible cold strip mills. In addition, it is also installed in various finishing units such as continuous pickling units, slitting, annealing, and coating. Since the coiling rollers will have uninterrupted relative displacement during use, the universal shaft is not always in a stable rotation state, and will be in a rotation mode of variable angle and size for a long time. Therefore, the use torque, load-bearing capacity, and stability of the universal shaft are rigidly required.

[0004] A universal connecting shaft with announcement number CN217081167U includes a first shaft fork and a second shaft fork, the first shaft fork and the second shaft fork are connected by a cross shaft and a retaining frame, a positioning column is provided on the inner side of the second shaft fork, an extension rod is provided on one end of the first shaft fork close to the second shaft fork, the extension rod is located on the inner side of the second shaft fork, the positioning column and the extension rod are connected by a telescopic device, the telescopic device is assembled from a plurality of pins and a plurality of connecting parts, and the telescopic device is an 8-shaped structure as a whole, and the pins at both ends of the telescopic device are respectively connected to the positioning column and the extension rod; the utility model has a simple structure and is easy to install. By setting a retaining frame, it can well solve the problem of being unable to plug in due to shaft installation, and at the same time improve the stability of the connecting shaft; by setting a telescopic device, and using the pull ring as an active node, it swings up and down and in the direction, and limits the position, thereby completing cumbersome actions and realizing continuous rotation of the two connected shafts.

[0005] When the above technical solution is actually applied, the transmission function is realized through the cross shaft. During use, there is constant friction between the cross shaft and the shaft fork, which has a certain degree of impact on the service life of the cross shaft.

[0006] Therefore, it is necessary to invent a cross-axis universal coupling to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a cross-axis universal coupling to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cross-axis universal coupling, comprising a connecting seat and a connecting flange, the connecting seat and the connecting flange are each provided with two groups, a shaft fork is fixedly provided on the side where the connecting seat and the connecting flange are close to each other, the shaft fork is provided in a "U"-shaped structure, and the inner walls on both sides of the shaft fork are provided with rounded corners, and the two groups of the shaft forks are arranged in an interlocking manner, a pin hole is penetrated in the middle of the shaft fork, a support shaft is penetrated in the pin hole in the middle of one of the shaft forks, a spherical block is fixedly provided in the middle of the support shaft, a circular hole is penetrated in the middle of the spherical block, a transmission shaft is penetrated in the middle of the circular hole, and the transmission shaft is penetrated in the pin hole in the middle of the other shaft fork, and a shaft sleeve is sleeved at one end of the transmission shaft, and the shaft sleeve is arranged on the outside of the shaft fork.

[0009] Preferably, two positioning sleeves are sleeved on the middle portion of the transmission shaft, and the two positioning sleeves are respectively arranged on both sides of the spherical block.

[0010] Preferably, the sides of the two positioning sleeves that are away from each other are both configured as arcuate surfaces corresponding to the inner wall of the shaft fork, and the sides of the two positioning sleeves that are close to each other are both configured as concave surfaces corresponding to the spherical block.

[0011] Preferably, a fixing sleeve is fixedly provided on the outer side of one of the connecting seats, a movable rod is inserted and provided inside the fixing sleeve, and the movable rod is fixedly provided on the outer side of the other connecting seat.

[0012] Preferably, a plurality of grooves are disposed around the inner side wall of the fixing sleeve, and a plurality of protrusions corresponding to the grooves are disposed around the outer side of the movable rod.

[0013] Preferably, a plurality of mounting holes are arranged around the outer side wall of the connecting flange.

[0014] Technical effects and advantages of the utility model:

[0015] 1. The utility model provides a connecting seat and a connecting flange, a shaft fork is provided between the connecting seat and the connecting flange, a supporting shaft and a transmission shaft are provided between the two shaft forks, and the supporting shaft and the transmission shaft form a cross shaft structure to achieve a transmission effect. A spherical block is provided in the middle of the supporting shaft, a round hole is provided in the middle of the spherical block, and the transmission shaft is provided inside the round hole. During the use of the device, friction may occur between the supporting shaft and the transmission shaft to reduce the degree of friction between the supporting shaft, the transmission shaft and the shaft fork, thereby protecting the universal coupling and improving the service life of the universal coupling.

[0016] 2. The utility model sets a fixed sleeve and a movable rod between the two connecting seats. The fixed sleeve cooperates with the movable rod to achieve the connection of the two connecting seats. A groove is set on the inner side of the fixed sleeve and a protrusion is set on the outer side of the movable rod. The groove cooperates with the protrusion to ensure the transmission effect between the fixed sleeve and the movable rod, thereby ensuring the transmission effect while realizing the adaptive extension and retraction of the universal coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the support shaft and transmission shaft structure of the utility model.

[0019] Figure 3 It is an exploded view of the connecting seat and connecting flange structure of the utility model.

[0020] In the figure: 1, connecting seat; 2, connecting flange; 3, shaft fork; 4, pin hole; 5, supporting shaft; 6, spherical block; 7, round hole; 8, transmission shaft; 9, shaft sleeve; 10, positioning sleeve; 11, arc surface; 12, concave surface; 13, fixing sleeve; 14, movable rod; 15, groove; 16, protrusion. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides Figure 1-3 A cross-axis universal coupling shown in the figure comprises a connecting seat 1 and a connecting flange 2, and the connecting seat 1 and the connecting flange 2 are each provided with two groups, and a shaft fork 3 is fixedly provided on the side where the connecting seat 1 and the connecting flange 2 are close to each other, and the shaft fork 3 is provided in a "U"-shaped structure, and the inner walls on both sides of the shaft fork 3 are provided with rounded corners, and the two groups of shaft forks 3 are arranged in an interlocking manner, and a pin hole 4 is provided through the middle of the shaft fork 3, and a support shaft 5 is provided through the pin hole 4 in the middle of one shaft fork 3, and a spherical block 6 is fixedly provided in the middle of the support shaft 5, and a circular hole 7 is provided through the middle of the spherical block 6, and a transmission shaft 8 is provided through the middle of the circular hole 7, and the transmission shaft 8 is provided through the pin hole 4 in the middle of the other shaft fork 3, and one end of the transmission shaft 8 is sleeved with a shaft sleeve 9, and the shaft sleeve 9 is provided on the outside of the shaft fork 3, and the shaft sleeve 9 can realize locking of the position of the transmission shaft 8;

[0023] Specifically, two positioning sleeves 10 are provided in the middle sleeve of the transmission shaft 8, and the two positioning sleeves 10 are respectively provided on both sides of the spherical block 6, and the sides of the two positioning sleeves 10 away from each other are provided with an arc surface 11 corresponding to the inner wall of the shaft fork 3, and the sides of the two positioning sleeves 10 close to each other are provided with a concave surface 12 corresponding to the spherical block 6. The provision of the positioning sleeves 10 can realize the positioning of the transmission shaft 8, so as to prevent the transmission shaft 8 from sliding up and down in the circular hole 7 and affecting the transmission effect;

[0024] More specifically, a fixed sleeve 13 is fixedly provided on the outer side of one connecting seat 1, a movable rod 14 is inserted and provided inside the fixed sleeve 13, and the movable rod 14 is fixedly provided on the outer side of another connecting seat 1, a plurality of grooves 15 are arranged around the inner side wall of the fixed sleeve 13, and a plurality of protrusions 16 corresponding to the grooves 15 are arranged around the outer side of the movable rod 14, and the protrusions 16 cooperate with the grooves 15 to ensure the transmission effect between the fixed sleeve 13 and the movable rod 14;

[0025] In addition, a plurality of mounting holes are arranged around the outer side wall of the connecting flange 2 , and the arrangement of the mounting holes can realize the installation of the connecting flange 2 .

[0026] Working principle of this utility model:

[0027] When the device is in use, the two connecting flanges 2 are respectively installed on the power input mechanism of the driving mechanism and the frame. The driving mechanism drives the connecting flange 2 to rotate, and the connecting flange 2 drives the shaft fork 3 to rotate. The two shaft forks 3 realize the transmission effect through the support shaft 5 and the transmission shaft 8. During this process, the transmission shaft 8 can rotate in the circular hole 7 on the spherical block 6 in the middle of the support shaft 5 to reduce the friction between the transmission shaft 8, the support shaft 5 and the shaft fork 3, thereby protecting the shaft fork 3. By arranging a sleeve 9 at one end of the transmission shaft 8 and removing the sleeve 9, the transmission shaft 8 can be disassembled and maintained.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A cross-axis universal coupling, comprising a connecting seat (1) and a connecting flange (2), characterized in that: The connecting seat (1) and the connecting flange (2) are both provided with two groups. A shaft fork (3) is fixedly provided on the side of the connecting seat (1) and the connecting flange (2) close to each other. The shaft fork (3) is provided in a "U"-shaped structure, and the inner walls on both sides of the shaft fork (3) are provided with rounded corners. The two groups of shaft forks (3) are arranged in a bite-engaged manner. A pin hole (4) is provided through the middle of the shaft fork (3). A support shaft (5) is provided through the pin hole (4) in the middle of one shaft fork (3). A spherical block (6) is fixedly provided in the middle of the support shaft (5). A circular hole (7) is provided through the middle of the spherical block (6). A transmission shaft (8) is provided through the middle of the circular hole (7), and the transmission shaft (8) is provided through the pin hole (4) in the middle of the other shaft fork (3). One end of the transmission shaft (8) is sleeved with a shaft sleeve (9), and the shaft sleeve (9) is provided on the outside of the shaft fork (3).

2. A cross-axis universal coupling according to claim 1, characterized in that: Two positioning sleeves (10) are sleeved in the middle of the transmission shaft (8), and the two positioning sleeves (10) are respectively arranged on both sides of the spherical block (6).

3. A cross-axis universal coupling according to claim 2, characterized in that: The sides of the two positioning sleeves (10) that are away from each other are both configured as arcuate surfaces (11) corresponding to the inner wall of the shaft fork (3), and the sides of the two positioning sleeves (10) that are close to each other are both configured as concave surfaces (12) corresponding to the spherical block (6).

4. A cross-axis universal coupling according to claim 3, characterized in that: A fixing sleeve (13) is fixedly arranged on the outer side of one of the connecting seats (1), a movable rod (14) is inserted and arranged inside the fixing sleeve (13), and the movable rod (14) is fixedly arranged on the outer side of the other connecting seat (1).

5. A cross-axis universal coupling according to claim 4, characterized in that: The inner side wall of the fixing sleeve (13) is surrounded by a plurality of grooves (15), and the outer side of the movable rod (14) is surrounded by a plurality of protrusions (16) corresponding to the grooves (15).

6. A cross-axis universal coupling according to claim 5, characterized in that: The outer side wall of the connecting flange (2) is surrounded by a plurality of mounting holes.

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