A kind of card column type telescopic cross shaft based on universal coupling

Abstract

The utility model discloses a kind of universal coupling based on card column type telescopic cross axle, including card column type cross axle, the telescopic cavity is evenly provided in the inside of card column type cross axle four corners, telescopic column is installed in the telescopic cavity, and telescopic spring is fixed between the telescopic column and the card column type cross axle.Affinity effect lies in: the utility model is by setting a group of by operating mechanism of push block, telescopic sealing plate, locking bolt and positioning hole composition, in assembling process, by push block telescopic column is moved to compression to telescopic spring, make it easy to assemble, and telescopic sealing plate is sealed to cavity at the same time again without affecting the moving performance of push block, and it can be realized to the fixing of telescopic column after adjustment by locking bolt and positioning hole combination, on the one hand, it is convenient for staff to assemble operation, and safety factor is high, on the other hand, it can be guaranteed to avoid the influence of telescopic spring on transmission performance in use process, guarantee its use performance.

Description

Technical Field

[0001] This utility model relates to the technical field of universal joints with cross shafts, specifically to a universal joint based on a snap-fit ​​telescopic cross shaft. Background Technology

[0002] Universal joints, also known as cross-type universal joints, are commonly used connecting components in industry. They enable transmission between two shafts at a certain angle and are widely used in heavy machinery.

[0003] Patent CN220850461U discloses a universal coupling based on a snap-type telescopic cross shaft, which includes a fork head I, a snap-type telescopic cross shaft, a connecting cylinder, a fork head II, and a mounting disc; two shaft heads on one straight line of the snap-type telescopic cross shaft are fitted with fork head I, and two shaft heads on another straight line are fitted with fork head II, fork head II and fork head I are cross-opposite, fork head I and mounting disc are a whole, and fork head II and connecting cylinder are a whole;

[0004] While the aforementioned patent utilizes a telescopic spring installed within the connecting end of the swivel-type universal joint to provide telescopic capability, facilitating assembly by reducing the distance between the two sets of connecting ends during retraction under the spring's action, the assembly process requires applying external force to the connecting end before fitting the connecting seat. However, the space within the connecting seat is relatively narrow, posing a risk of hand injury to workers upon releasing the force. This not only hinders operation but also presents a safety hazard. Furthermore, the telescopic spring can cause the connecting end of the swivel-type universal joint to bounce during use, affecting its transmission efficiency and resulting in poor performance. Therefore, there is an urgent need for a universal coupling based on a swivel-type telescopic universal joint to address these issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this application provides a universal coupling based on a snap-fit ​​telescopic cross shaft, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] This utility model is achieved through the following technical solution: This utility model proposes a universal coupling based on a pin-type telescopic cross shaft, including a pin-type cross shaft. Each of the four corners of the pin-type cross shaft has a telescopic cavity. A telescopic column is installed inside each telescopic cavity. A telescopic spring is fixed between the telescopic column and the pin-type cross shaft. A through cavity is opened on the outer wall of the pin-type cross shaft. A lever is fixed at a position corresponding to the through cavity on the telescopic column. A telescopic sealing plate is installed inside the through cavity. Two sets of positioning holes are symmetrically opened on the movable part of the telescopic sealing plate. Locking bolts are installed on the fixed part of the telescopic sealing plate. Two sets of telescopic wedge blocks are symmetrically installed on the outer wall of the telescopic column.

[0009] By adopting the above technical solution, during the assembly process, the telescopic column located in the horizontal direction can be pre-connected to the first connecting seat. That is, the telescopic column is moved by the lever to compress the telescopic spring, and the adjusted telescopic column is fixed by the locking bolt and the positioning hole, reducing the width of the horizontal cross shaft to be smaller than the width between the inner walls of the first connecting seat. Then, the connecting seat is placed on the cross shaft, and the locking bolt is separated from the positioning hole to release the fixation. The telescopic column is reset by the rebound force of the telescopic spring, so that it can be assembled with the first connecting seat. Similarly, by repeating the above operation, the second connecting seat can be assembled in the vertical direction.

[0010] Furthermore, the telescopic cavity is formed inside the snap-pin cross shaft, and the telescopic spring is welded between the telescopic pin and the snap-pin cross shaft.

[0011] By adopting the above technical solution, the telescopic spring enables the telescopic column to have a certain degree of mobility, thereby realizing the assembly of the snap-on cross shaft.

[0012] Furthermore, the through cavity is formed on the snap-type cross shaft, and the lever passes through the through cavity.

[0013] By adopting the above technical solution, the push block facilitates the application of external force to the telescopic column, enabling it to move, while effectively avoiding pinching injuries and ensuring a high safety factor.

[0014] Furthermore, the telescopic sealing plate is embedded in the side wall of the pin-type cross shaft, the positioning hole is formed on the telescopic sealing plate, the telescopic sealing plate is located in the through cavity, and the locking bolt is threadedly connected to the positioning hole.

[0015] By adopting the above technical solution, the telescopic sealing plate can seal the cavity without affecting the movement performance of the lever. At the same time, the locking bolt combined with the positioning hole can fix the telescopic column after adjustment. This facilitates the assembly operation by the staff and ensures that the telescopic spring does not affect the transmission performance during use.

[0016] Furthermore, the telescopic wedge block and the telescopic column are connected by a spring, and the snap-pin cross shaft is provided with a U-shaped connecting seat one and a connecting seat two.

[0017] By adopting the above technical solution, during the assembly process, the telescopic column is inserted into the pre-reserved connecting cavity of the connecting seat by relying on the rebound force of the telescopic spring. During the insertion process, the telescopic wedge block retracts under the action of the spring, and after it passes through the connecting cavity, it returns to its original position under the action of the spring, thereby realizing the assembly of the first connecting seat and the second connecting seat with the snap-type cross shaft.

[0018] Furthermore, the telescopic column is rotatably connected to both the first connecting seat and the second connecting seat, with the first connecting seat and the second connecting seat arranged in a perpendicular orientation.

[0019] By adopting the above technical solution, the first connecting seat, the second connecting seat, and the snap-type cross shaft can form a universal joint.

[0020] Furthermore, a connecting shaft is fixed on one side wall of the connecting seat, and a flange is fixed on the other side wall of the connecting seat.

[0021] By adopting the above technical solution, the connecting shaft can connect the universal joint to the drive mechanism, and the flange can be connected to the load. The drive mechanism drives the load on the flange to rotate through the universal joint to perform work.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] This utility model employs an operating mechanism consisting of a lever, a telescopic sealing plate, a locking bolt, and a positioning hole. During assembly, the lever moves the telescopic column, compressing the telescopic spring to facilitate assembly. The telescopic sealing plate seals the cavity without affecting the lever's movement. The locking bolt, combined with the positioning hole, secures the adjusted telescopic column. This design facilitates assembly and operation, ensures a high safety factor, and prevents the telescopic spring from affecting transmission performance during use, thus guaranteeing its performance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a universal coupling based on a snap-type telescopic cross shaft according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the snap-lock type cross shaft in the universal coupling based on the snap-lock type telescopic cross shaft described in this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the snap-type cross shaft in the horizontal direction of the universal coupling based on the snap-type telescopic cross shaft described in this utility model.

[0028] Figure 4 This is an exploded view of the telescopic sealing plate in a universal coupling based on a pin-type telescopic cross shaft, as described in this utility model.

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. Connecting shaft; 2. Connecting seat one; 3. Connecting seat two; 4. Flange; 5. Telescopic column; 6. Telescopic wedge block; 7. Clamping cross shaft; 8. Through cavity; 9. Pulley block; 10. Telescopic sealing plate; 11. Positioning hole; 12. Locking bolt; 13. Telescopic cavity; 14. Telescopic spring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] like Figures 1-4As shown, this embodiment of a universal coupling based on a snap-type telescopic cross shaft 7 includes a snap-type cross shaft 7. Each of the four corners of the snap-type cross shaft 7 has a telescopic cavity 13. A telescopic column 5 is installed inside the telescopic cavity 13. A telescopic spring 14 is fixed between the telescopic column 5 and the snap-type cross shaft 7. A through cavity 8 is opened on the outer wall of the snap-type cross shaft 7. A lever 9 is fixed at the position corresponding to the telescopic column 5 and the through cavity 8. A telescopic sealing plate 10 is installed inside the through cavity 8. Two sets of positioning holes 11 are symmetrically opened on the movable part of the telescopic sealing plate 10. Locking bolts 12 are installed on the fixed part of the telescopic sealing plate 10. Two sets of telescopic wedge blocks 6 are symmetrically installed on the outer wall of the telescopic column 5. During assembly... The telescopic column 5 located in the horizontal direction can be pre-connected to the connecting seat 2. That is, the telescopic column 5 is moved by the lever 9 to compress the telescopic spring 14, and the adjusted telescopic column 5 is fixed by the locking bolt 12 combined with the positioning hole 11. The width of the locking column cross shaft 7 in the horizontal direction is reduced to be smaller than the width between the inner walls of the connecting seat 2. Then, the connecting seat 2 is sleeved on the locking column cross shaft 7, and the locking bolt 12 is separated from the positioning hole 11 to release the fixation. The telescopic column 5 is reset by the rebound force of the telescopic spring 14, so that it can be assembled with the connecting seat 2. Similarly, the above operation can be repeated to realize the assembly of the connecting seat 3 in the vertical direction.

[0033] like Figures 2-4 As shown, in this embodiment, the telescopic cavity 13 is formed inside the snap-lock cross shaft 7, the telescopic spring 14 is welded between the telescopic column 5 and the snap-lock cross shaft 7, the through cavity 8 is formed on the snap-lock cross shaft 7, the lever block 9 passes through the through cavity 8, the telescopic sealing plate 10 is embedded in the side wall of the snap-lock cross shaft 7, the positioning hole 11 is formed on the telescopic sealing plate 10, the telescopic sealing plate 10 is located at the through cavity 8, the locking bolt 12 is threadedly connected to the positioning hole 11, the telescopic wedge block 6 is connected to the telescopic column 5 by a spring, and the snap-lock cross shaft 7 is provided with a U-shaped connecting seat 1 2 and a connecting seat 2 3. During the assembly process, the lever block 9 applies external force to the telescopic column 5 and compresses the compression spring. Then, the external force is released, and the telescopic column 5 is inserted into the pre-reserved connecting cavity of the connecting seat by relying on the rebound force of the telescopic spring 14. During the insertion process, the telescopic wedge block 6 retracts under the action of the spring. After it passes through the connecting cavity, it returns to its original position under the action of the spring, realizing the assembly of the connecting seat 1 2 and the connecting seat 2 3 with the snap-type cross shaft 7. The telescopic sealing plate 10 seals the through cavity 8 without affecting the movement performance of the lever block 9. At the same time, the telescopic column 5 can be fixed after adjustment by combining the locking bolt 12 with the positioning hole 11. On the one hand, it is convenient for the staff to assemble and operate, and the safety factor is high. On the other hand, it can ensure that the telescopic spring 14 does not affect the transmission performance during use.

[0034] like Figure 1As shown, in this embodiment, the telescopic column 5 is rotatably connected to both the first connecting seat 2 and the second connecting seat 3. The first connecting seat 2 and the second connecting seat 3 are arranged in a vertical orientation. A connecting shaft 1 is fixed on one side wall of the first connecting seat 2, and a flange 4 is fixed on one side wall of the second connecting seat 3. The connecting shaft 1 can connect the universal joint to the drive mechanism, and the flange 4 can be connected to the load. The drive mechanism drives the load on the flange 4 to rotate through the universal joint to perform work.

[0035] The specific implementation process of this embodiment is as follows: First, the snap-type cross shaft 7 is assembled with the connecting seat 1 2 and the connecting seat 2 3. During the assembly process, the telescopic column 5 located in the horizontal direction can be pre-connected to the connecting seat 1 2. That is, the telescopic column 5 is moved by the lever 9 to compress the telescopic spring 14, and the adjusted telescopic column 5 is fixed by the locking bolt 12 combined with the positioning hole 11, reducing the width of the snap-type cross shaft 7 in the horizontal direction to be smaller than the width between the inner walls of the connecting seat 1 2. Then, the connecting seat 1 2 is sleeved on the snap-type cross shaft 7, and the locking bolt 12 is separated from the positioning hole 11 to release the fixation. The telescopic column 5 is inserted into the pre-reserved connecting cavity of the connecting seat by the rebound force of the telescopic spring 14. During the insertion process, the telescopic wedge... The block 6 retracts under the action of the spring, and after passing through the connecting cavity, it returns to its original position under the action of the spring, thus assembling it with the connecting seat 2. Similarly, repeating the above operation can achieve the vertical assembly of the connecting seat 3. The telescopic sealing plate 10 seals the through cavity 8 without affecting the movement performance of the lever 9. At the same time, the locking bolt 12 combined with the positioning hole 11 can fix the adjusted telescopic column 5. On the one hand, it is convenient for the staff to assemble and operate, and the safety factor is high. On the other hand, it can ensure that the telescopic spring 14 does not affect the transmission performance during use. Finally, the connecting shaft 1 can connect the universal joint to the drive mechanism, and the flange 4 is connected to the load. The drive mechanism drives the load on the flange 4 to rotate through the universal joint to perform work.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A universal coupling based on a snap-fit ​​telescopic cross shaft, characterized in that: The device includes a snap-type cross shaft (7), with telescopic cavities (13) opened inside each of the four corners of the snap-type cross shaft (7). A telescopic column (5) is installed in the telescopic cavity (13). A telescopic spring (14) is fixed between the telescopic column (5) and the snap-type cross shaft (7). A through cavity (8) is opened on the outer wall of the snap-type cross shaft (7). A lever (9) is fixed at the position corresponding to the telescopic column (5) and the through cavity (8). A telescopic sealing plate (10) is installed in the through cavity (8). Two sets of positioning holes (11) are symmetrically opened on the movable part of the telescopic sealing plate (10). A locking bolt (12) is installed on the fixed part of the telescopic sealing plate (10). Two sets of telescopic wedge blocks (6) are symmetrically installed on the outer wall of the telescopic column (5).

2. A universal coupling based on a pin-type telescopic cross shaft according to claim 1, characterized in that: The telescopic cavity (13) is formed inside the snap-pin cross shaft (7), and the telescopic spring (14) is welded between the telescopic pin (5) and the snap-pin cross shaft (7).

3. A universal coupling based on a pin-type telescopic cross shaft according to claim 2, characterized in that: The through cavity (8) is formed on the snap-type cross shaft (7), and the push block (9) passes through the through cavity (8).

4. A universal coupling based on a pin-type telescopic cross shaft according to claim 3, characterized in that: The telescopic sealing plate (10) is embedded in the side wall of the snap-type cross shaft (7), the positioning hole (11) is formed on the telescopic sealing plate (10), the telescopic sealing plate (10) is located in the through cavity (8), and the locking bolt (12) is threadedly connected to the positioning hole (11).

5. A universal coupling based on a pin-type telescopic cross shaft according to claim 1, characterized in that: The telescopic wedge block (6) and the telescopic column (5) are connected by a spring. The snap-pin cross shaft (7) is provided with a U-shaped connecting seat one (2) and a connecting seat two (3).

6. A universal coupling based on a pin-type telescopic cross shaft according to claim 5, characterized in that: The telescopic column (5) is rotatably connected to the first connecting seat (2) and the second connecting seat (3), and the first connecting seat (2) and the second connecting seat (3) are arranged in a vertical orientation.

7. A universal coupling based on a pin-type telescopic cross shaft according to claim 6, characterized in that: A connecting shaft (1) is fixed on one side wall of the first connecting seat (2), and a flange (4) is fixed on one side wall of the second connecting seat (3).

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