Spline connecting structure of large-tension winding drum

Abstract

The utility model relates to the technical field of winding drum splines, and discloses a spline connection structure of a large-tension winding drum, which comprises a hollow shaft, one end of the hollow shaft is provided with an embedded groove, a spline housing is slidably mounted in the embedded groove, and the spline housing comprises a sleeve slidably mounted in the embedded groove. A connecting ring with one side making contact with one end of the hollow shaft is fixedly installed on one side of the sleeve, and a connecting key is fixedly installed on the surface of the connecting ring. According to the spline connecting structure of the large-tension winding drum, the embedded groove and the connecting threaded hole are formed in one end of the hollow shaft, the spline sleeve is connected to one end of the hollow shaft in a bolted mode through the embedded groove and the connecting threaded hole, the hollow shaft and the spline sleeve are machined and manufactured separately, the machining difficulty of the hollow shaft is lowered, and the problem that an internal spline and the hollow shaft are integrated is solved; the manufacturing cost and the machining difficulty are greatly improved, the production efficiency is reduced, and the maintenance cost of equipment is also greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drum splines, in particular to a spline connection structure of a large-tension drum. Background Art

[0002] The tetrahedral expansion and contraction reel is a high tension reel. It is a device that can withstand high tension during the winding process. It is often used in the winding process of various strips. The high tension reel usually consists of a reel body, a bearing seat, a transmission device, an expansion and contraction device, etc. Among them, the reel body is the main part of the coiled strip, usually made of high-quality steel, with high strength and rigidity. The bearing seat supports the reel body and realizes its rotational movement, the transmission device provides the power for the reel body to rotate, and the expansion and contraction device is used to adjust the diameter of the reel body to adapt to strips of different specifications.

[0003] There are two main ways of power transmission between the common large-tension reel hollow shaft and the main shaft, one is double-key connection, the other is involute spline connection. Because of the pure axial sliding problem between the main shaft and the central control shaft, no matter which connection method is used, it is necessary to consider both the strength of the torque transmission and the smooth sliding between the main shaft and the hollow shaft. The torque transmission and smooth sliding are a contradiction, and it is difficult to take both into account.

[0004] Among them, the involute spline structure solves the problem of insufficient torque in double-key transmission, but the design structure of the spline brings difficulties to processing and manufacturing, mainly because the internal spline and the hollow shaft are made into one body, which greatly increases the manufacturing cost and processing difficulty, reduces production efficiency, and greatly increases the maintenance cost of equipment. In view of this, the present application proposes a spline connection structure for a high-tension reel. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a spline connection structure for a high-tension reel, which has the advantages of separate production of the internal spline and the hollow shaft, reducing the difficulty of processing, etc. It solves the problem that the internal spline and the hollow shaft are made into one body, which greatly increases the manufacturing cost and processing difficulty, reduces the production efficiency, and greatly increases the maintenance cost of the equipment.

[0006] To achieve the above object, the utility model provides the following technical solution: a spline connection structure of a large tension reel, comprising a hollow shaft, one end of which is provided with an embedded groove, and a spline sleeve is slidably installed inside the embedded groove;

[0007] The spline sleeve comprises a sleeve slidably mounted inside the embedded groove, a connecting ring whose side contacts one end of the hollow shaft is fixedly mounted on one side of the sleeve, a connecting key is fixedly mounted on the surface of the connecting ring, and a countersunk hole is formed on the side of the connecting ring away from the hollow shaft;

[0008] A connecting threaded hole corresponding to the countersunk hole is opened at one end of the hollow shaft, a short bolt is passed through the interior of the countersunk hole, and the short bolt is threadedly connected to the hollow shaft through the connecting threaded hole.

[0009] Furthermore, positioning grooves are provided on the surfaces of the connecting ring and the hollow shaft, and positioning keys are slidably installed inside the positioning grooves. The positioning keys are bolted to one end of the hollow shaft via long bolts.

[0010] Furthermore, a connector is slidably mounted on one side of the spline sleeve, and a connecting block adapted to the connecting key is fixedly mounted on one side of the connector.

[0011] Furthermore, a main shaft is inserted into the hollow shaft and the spline sleeve, a gear groove is opened on the surface of the hollow shaft, and a shaft gear is slidably mounted on the surface of the hollow shaft through the gear groove.

[0012] Furthermore, a washer groove is provided on the surface of the hollow shaft, and a shaft washer is provided on the surface of the hollow shaft through the washer groove sleeve, and the shaft washer is located on the side of the shaft gear away from the spline sleeve.

[0013] Furthermore, a bearing groove is provided on the surface of the hollow shaft, and an on-shaft bearing is provided on the surface of the hollow shaft through the bearing groove sleeve, and the on-shaft bearing is located on a side of the on-shaft gear close to the spline sleeve.

[0014] Furthermore, a surface of the hollow shaft located between the washer on the shaft and the gear on the shaft is sleeved with a shaft retaining ring, and a surface of the hollow shaft located between the bearing on the shaft and the gear on the shaft is sleeved with a shaft retaining ring.

[0015] Compared with the prior art, the utility model provides a spline connection structure of a large tension reel, which has the following beneficial effects:

[0016] The spline connection structure of the high-tension reel is achieved by opening an embedded groove and a connecting threaded hole at one end of the hollow shaft, and bolting the spline sleeve to one end of the hollow shaft through the embedded groove and the connecting threaded hole. The hollow shaft and the spline sleeve are separately processed and manufactured, which reduces the difficulty of processing the hollow shaft and solves the problem of integrating the internal spline and the hollow shaft, which greatly increases the manufacturing cost and processing difficulty, reduces the production efficiency, and greatly increases the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a cross-sectional schematic diagram of the connection between the hollow shaft and the spline sleeve of the utility model;

[0019] Figure 3 For this utility model Figure 1 Sectional view at point A;

[0020] Figure 4 It is a three-dimensional schematic diagram of the spline sleeve of the utility model.

[0021] In the figure: 1. hollow shaft; 101. embedded groove; 102. connecting threaded hole; 103. positioning groove; 104. gear groove; 105. washer groove; 106. bearing groove; 2. spline sleeve; 21. sleeve; 22. connecting ring; 23. connecting key; 24. countersunk hole; 3. positioning key; 4. short bolt; 5. long bolt; 6. connector; 7. main shaft; 8. gear on the shaft; 9. washer on the shaft; 10. bearing on the shaft; 11. retaining ring on the shaft. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1: Please refer to Figure 1-4 A spline connection structure of a large tension reel includes a hollow shaft 1, one end of the hollow shaft 1 is provided with an embedded groove 101, and a spline sleeve 2 is slidably installed inside the embedded groove 101.

[0024] Among them, the spline sleeve 2 includes a sleeve 21 slidably installed inside the embedded groove 101, a connecting ring 22 is fixedly installed on one side of the sleeve 21 and one side contacts with one end of the hollow shaft 1, a connecting key 23 is fixedly installed on the surface of the connecting ring 22, and a countersunk hole 24 is opened on the side of the connecting ring 22 away from the hollow shaft 1.

[0025] Secondly, a connecting threaded hole 102 corresponding to the countersunk hole 24 is formed at one end of the hollow shaft 1, and a short bolt 4 is passed through the countersunk hole 24, and the short bolt 4 is threadedly connected to the hollow shaft 1 through the connecting threaded hole 102. The spline sleeve 2 is bolted to one end of the hollow shaft 1 by the short bolt 4, so that the hollow shaft 1 increases the strength of transmitting torque and reduces the difficulty of processing.

[0026] At the same time, a main shaft 7 is passed through the inside of the hollow shaft 1 and the spline sleeve 2, a gear groove 104 is opened on the surface of the hollow shaft 1, and a shaft gear 8 is slidably installed on the surface of the hollow shaft 1 through the gear groove 104, a washer groove 105 is opened on the surface of the hollow shaft 1, and a shaft washer 9 is sleeved on the surface of the hollow shaft 1 through the washer groove 105, and the shaft washer 9 is located on the side of the shaft gear 8 away from the spline sleeve 2.

[0027] A bearing groove 106 is formed on the surface of the hollow shaft 1 , and a shaft bearing 10 is sleeved on the surface of the hollow shaft 1 through the bearing groove 106 . The shaft bearing 10 is located on a side of the shaft gear 8 close to the spline sleeve 2 .

[0028] Secondly, a shaft retaining ring 11 is sleeved on the surface of the hollow shaft 1 located between the shaft washer 9 and the shaft gear 8, and a shaft retaining ring 11 is sleeved on the surface of the hollow shaft 1 located between the shaft bearing 10 and the shaft gear 8.

[0029] Embodiment 2: Based on the embodiment 1, the surface of the connecting ring 22 and the surface of the hollow shaft 1 are both provided with positioning grooves 103, and a positioning key 3 is slidably installed inside the positioning groove 103, and the positioning key 3 is bolted to one end of the hollow shaft 1 through a long bolt 5. The positioning key 3 increases the positioning accuracy between the hollow shaft 1 and the spline sleeve 2, and facilitates the installation of the short bolt 4.

[0030] A connector 6 is slidably mounted on one side of the spline sleeve 2, and a connecting block adapted to the connecting key 23 is fixedly mounted on one side of the connector 6. The output torque can be smoothly transmitted to the main shaft 7 through the connecting key 23.

[0031] When this embodiment is in use, an embedded groove 101 and a connecting threaded hole 102 that are compatible with the spline sleeve 2 are processed at one end of the hollow shaft 1, so that the hollow shaft 1 and the spline sleeve 2 can be connected by a short bolt 4, so that the hollow shaft 1 can ensure both the transmission of torque and the axial sliding problem of the inner and outer splines.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] 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 spline connection structure for a high tension reel, comprising a hollow shaft (1), characterized in that: An embedded groove (101) is formed at one end of the hollow shaft (1), and a spline sleeve (2) is slidably mounted inside the embedded groove (101); The spline sleeve (2) comprises a sleeve (21) slidably mounted inside the embedded groove (101); a connecting ring (22) whose side contacts one end of the hollow shaft (1) is fixedly mounted on one side of the sleeve (21); a connecting key (23) is fixedly mounted on the surface of the connecting ring (22); and a countersunk hole (24) is provided on a side of the connecting ring (22) away from the hollow shaft (1); One end of the hollow shaft (1) is provided with a connecting threaded hole (102) corresponding to the countersunk hole (24); a short bolt (4) is passed through the interior of the countersunk hole (24); and the short bolt (4) is threadedly connected to the hollow shaft (1) through the connecting threaded hole (102).

2. The spline connection structure of a high tension reel according to claim 1, characterized in that: The surface of the connecting ring (22) and the surface of the hollow shaft (1) are both provided with a positioning groove (103), a positioning key (3) is slidably installed inside the positioning groove (103), and the positioning key (3) is bolted to one end of the hollow shaft (1) through a long bolt (5).

3. The spline connection structure of a high tension reel according to claim 1, characterized in that: A connector (6) is slidably mounted on one side of the spline sleeve (2), and a connection block adapted to the connection key (23) is fixedly mounted on one side of the connector (6).

4. The spline connection structure of a high tension reel according to claim 1, characterized in that: A main shaft (7) is inserted into the hollow shaft (1) and the spline sleeve (2), a gear groove (104) is provided on the surface of the hollow shaft (1), and an on-shaft gear (8) is slidably mounted on the surface of the hollow shaft (1) through the gear groove (104).

5. The spline connection structure of a high tension reel according to claim 4, characterized in that: The surface of the hollow shaft (1) is provided with a washer groove (105), and a shaft washer (9) is sleeved on the surface of the hollow shaft (1) through the washer groove (105). The shaft washer (9) is located on the side of the shaft gear (8) away from the spline sleeve (2).

6. The spline connection structure of a high tension reel according to claim 1, characterized in that: A bearing groove (106) is provided on the surface of the hollow shaft (1), and an on-shaft bearing (10) is sleeved on the surface of the hollow shaft (1) through the bearing groove (106). The on-shaft bearing (10) is located on a side of the on-shaft gear (8) close to the spline sleeve (2).

7. The spline connection structure of a high tension reel according to claim 6, characterized in that: The surface of the hollow shaft (1) located between the on-shaft washer (9) and the on-shaft gear (8) is sleeved with an on-shaft retaining ring (11), and the surface of the hollow shaft (1) located between the on-shaft bearing (10) and the on-shaft gear (8) is sleeved with an on-shaft retaining ring (11).

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