Telescopic universal connecting shaft
By using telescopic universal connecting shafts in short-stress rolling mills, the problem of mismatch between the cross universal shaft and the short-stress rolling mill structure is solved, and efficient resource utilization and production efficiency are achieved.
Patent Information
- Application Number
- CN202420223890.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-30
AI Technical Summary
After the existing closed-end rolling mill was upgraded to a short-stress rolling mill, the cross universal shaft did not match the structure of the short-stress rolling mill, resulting in the scrapping of the cross universal shaft spare parts and wasting resources.
A telescopic universal connecting shaft, including a drum tooth coupling and a cross universal connecting shaft, is adopted to adjust the maximum relative position and minimum relative position between the drum tooth and the connecting rod through the telescopic assembly, and adapt to the structure of a short stress rolling mill Require.
The normal use of short-stress rolling mill is achieved, the original cross universal shaft spare parts are used, the rolling speed is increased, the rolling line operation rate is increased, the production cost is reduced, the service life of the universal shaft is extended, and the production is reduced. Safety risks and labor intensity of personnel.
Smart Images
Figure CN222502460U_ABST
Abstract
Description
[Technical field]
[0001] The utility model belongs to the technical field of steelmaking, and in particular relates to a telescopic universal connecting shaft. [Background technology]
[0002] The existing production line rolling mill connection structure is a reducer + cross universal joint + closed-end rolling mill. Each time the closed-end rolling mill changes rolls, it is necessary to use a cross universal joint and a hydraulic cylinder to push the rolls out of the rolling mill arch, use a crane to lift the old rolls, and then use the crane to place the new rolls. Finally, the rolls are pulled into the arch. The operation process is complicated, which makes roll changing difficult and easily causes damage to the cross universal joint. It is also easy to cause damage to related parts, resulting in frequent failures and shutdowns, which seriously affects production efficiency, invisibly increases maintenance costs, and increases the labor intensity of maintenance workers.
[0003] In order to improve the production efficiency of the rolling line, increase the roll changing speed, improve the rolling line operation rate and reduce the production cost, the closed rolling mill is upgraded to a short stress rolling mill. The short stress rolling mill arch is integrated with the rolling mill. Each time the rolls are changed, only the rolling mill needs to be replaced. The operation process is simple. However, due to the mismatch between the cross universal joint and the short stress rolling mill structure, all the spare parts of the cross universal joint will be scrapped, resulting in a waste of resources. [Contents of the utility model]
[0004] The utility model aims to provide a telescopic universal joint shaft to solve the problem that after the existing closed rolling mill is upgraded and transformed into a short stress rolling mill, the cross universal joint shaft and the short stress rolling mill structure do not match each other, causing all the spare parts of the cross universal joint shaft to be scrapped and generating a waste of resources.
[0005] The utility model adopts the following technical scheme: a telescopic universal connecting shaft, comprising a drum gear coupling, one side of the drum gear coupling is a drum gear, and the other side is a joint for connecting with the driving end of a short stress rolling mill;
[0006] It also includes a cross universal shaft for connecting the reducer, the cross universal shaft has two universal joints connected to each other in a cross shape, and one side of one of the universal joints is connected to a connecting rod;
[0007] The drum teeth are connected to the connecting rod via a telescopic assembly;
[0008] The telescopic components include:
[0009] A retaining ring, which is a hollow cylinder, is coaxially arranged at the end of the connecting rod away from the cross universal shaft, the inner wall of the retaining ring is provided with a first convex ring inwardly, and the end of the retaining ring away from the cross universal shaft is provided with a second convex ring inwardly;
[0010] A baffle is coaxially fixedly connected to the end of the drum tooth; the baffle is coaxially arranged in the baffle ring and is located between the first convex ring and the second convex ring;
[0011] The telescopic assembly is used to adjust the maximum relative position and the minimum relative position between the drum teeth and the connecting rod.
[0012] Furthermore, a shaft sleeve is coaxially mounted outside the drum tooth near the joint, a pin is arranged perpendicular to the center line of the shaft sleeve and passes through the drum tooth, bolts are arranged at both ends of the pin, and the axis of the bolt is perpendicular to the axis of the pin.
[0013] The beneficial effect of the utility model is that the utility model modifies the cross universal joint into a new coupling of the cross universal joint + drum gear coupling, upgrades and improves the original structure, can make the modified short stress rolling mill be used normally, and at the same time utilizes the previous cross universal joint spare parts, finally realizes the upgrading and transformation of the rolling mill, increases the roll changing speed, improves the rolling line operation rate, reduces the production cost, solves the current problems of short service life of the universal joint and difficulty in roll changing, and reduces the production safety risk and the labor intensity of personnel.
Brief Description of the Drawings
[0014] Figure 1 This is a schematic structural diagram of a telescopic universal connecting shaft of the utility model;
[0015] Figure 2 The utility model is a structural schematic diagram of a telescopic component part of a telescopic universal connecting shaft.
[0016] Among them, 1. cross universal joint, 11. universal joint, 12. connecting rod;
[0017] 2. drum gear coupling, 21. drum gear, 22. bolt, 23. pin, 24. bushing, 25. joint, 26. baffle;
[0018] 3. retaining ring, 31. first convex ring, 32. second convex ring. [Specific implementation method]
[0019] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.
[0020] The utility model provides a telescopic universal connecting shaft, such as Figure 1 As shown, it includes a drum gear coupling 2, one side of the drum gear coupling 2 is a drum gear 21, and the other side is a connector 25 for connecting to the transmission end of the short stress rolling mill. It also includes a cross universal shaft 1 for connecting the reducer, the cross universal shaft 1 has two universal joints 11 connected to each other in a cross shape, and one side of one of the universal joints 11 is connected to a connecting rod 12. The drum gear 21 is connected to the connecting rod 12 through a telescopic component. The telescopic component can realize the telescopic connection relationship between the drum gear coupling 2 and the cross universal shaft 1.
[0021] like Figure 2 As shown, the telescopic assembly includes a retaining ring 3 and a retaining plate 26 .
[0022] The retaining ring 3 is a hollow cylinder, which is coaxially arranged at the end of the connecting rod 12 away from the cross universal joint 1. The inner wall of the retaining ring 3 is provided with a first convex ring 31 inwardly, and the end of the retaining ring 3 away from the cross universal joint 1 is provided with a second convex ring 32 inwardly.
[0023] A baffle 26 is coaxially fixedly connected to the end of the drum tooth 21. The baffle 26 is coaxially arranged in the retaining ring 3 and is located between the first convex ring 31 and the second convex ring 32. It can move in the cavity between the first convex ring 31 and the second convex ring 32. The inner diameters of the first convex ring 31 and the second convex ring 32 are both smaller than the outer diameter of the baffle 26, and the inner diameter of the second convex ring 32 is larger than the outer diameter of the drum tooth 21, so that the baffle 26 can be limited.
[0024] The telescopic assembly is used to adjust the drum tooth 21 and the connecting rod 12 between the maximum relative position and the minimum relative position. The specific process is: the drum tooth moves toward the connecting rod 12 until the baffle 26 presses against the first convex ring 31, and the relative position of the drum tooth 21 and the connecting rod 12 is shortened to the shortest and cannot be shortened further. The drum tooth moves in the direction away from the connecting rod 12 until the baffle 26 is blocked by the second convex ring 32, and the relative position of the drum tooth 21 and the connecting rod 12 is stretched to the longest and cannot be stretched further.
[0025] In some embodiments, Figure 1 As shown, a sleeve 24 is coaxially sleeved outside the drum tooth 21 and near the joint 25, and a pin 23 is arranged perpendicular to the center line of the sleeve 24 and penetrates the drum tooth 21. Bolts 22 are arranged at both ends of the pin 23, and the axis of the bolt 22 is perpendicular to the axis of the pin 23. The sleeve 24 is responsible for the stability and reliability of the end hook shaft of the drum tooth 21, and the pin 23 and the bolt 22 are responsible for fixing the sleeve 24 to the outside of the drum tooth 21. The sleeve 24 and the hook shaft are optimized components of the drum tooth.
[0026] The utility model discloses a working method of a telescopic universal joint shaft: the motor is decelerated by a reducer, the cross universal shaft 1 and the drum gear coupling 2 are connected together by a telescopic assembly, the cross universal shaft 1 is installed in the reducer section, and the drum gear coupling 2 is installed in the short stress rolling mill, so as to realize the rolling mill rotation. When the spacing between the drum gear coupling and the cross universal shaft is to be telescopically adjusted, the drum gear can be moved toward the connecting rod 12 until the baffle 26 presses against the first convex ring 31, and the relative position of the drum gear 21 and the connecting rod 12 is shortened to the shortest and cannot be further shortened; or the drum gear is moved in a direction away from the connecting rod 12 until the baffle 26 is blocked by the second convex ring 32, and the relative position of the drum gear 21 and the connecting rod 12 is stretched to the longest and cannot be further lengthened.
[0027] The utility model discloses a telescopic universal joint shaft, in order to reduce equipment failure and employee labor intensity, takes on-site environmental factors into consideration, analyzes and studies the universal joint shaft of the medium rolling mill, and transforms it, adopts a telescopic combination of a cross universal joint shaft and a drum gear coupling, and this combination combines the structural features of the cross universal joint shaft and the drum gear coupling, and solves the problem that the cross universal joint shaft in the prior art does not match the short stress rolling mill structure, resulting in all the spare parts of the cross universal joint being scrapped, the service life of the universal shaft being short, the roll replacement being difficult, and the waste of resources, and also reduces equipment failure and employee labor intensity.
Claims
1. A telescopic universal joint shaft, characterized in that: It comprises a drum gear coupling (2), one side of the drum gear coupling (2) is a drum gear (21), and the other side is a joint (25) for connecting with the transmission end of a short stress rolling mill; It also includes a cross universal shaft (1) for connecting to the reducer, the cross universal shaft (1) having two universal joints (11) connected to each other in a cross shape, one side of one of the universal joints (11) being connected to a connecting rod (12); The drum tooth (21) is connected to the connecting rod (12) via a telescopic assembly; The telescopic assembly comprises: A retaining ring (3) which is a hollow cylinder and is coaxially arranged at one end of the connecting rod (12) away from the cross universal shaft (1), a first convex ring (31) being arranged inwardly on the inner wall of the retaining ring (3), and a second convex ring (32) being arranged inwardly at the end of the retaining ring (3) away from the cross universal shaft (1); a baffle (26) coaxially fixedly connected to the end of the drum tooth (21); the baffle (26) is coaxially arranged in the retaining ring (3) and located between the first convex ring (31) and the second convex ring (32); The telescopic assembly is used to adjust the maximum relative position and the minimum relative position between the drum tooth (21) and the connecting rod (12).
2. A telescopic universal joint shaft according to claim 1, characterized in that: A shaft sleeve (24) is coaxially sleeved outside the drum tooth (21) at a position close to the joint (25), and a pin shaft (23) is arranged perpendicular to the center line of the shaft sleeve (24) and penetrates the drum tooth (21). Bolts (22) are arranged at both ends of the pin shaft (23), and the axis of the bolt (22) is perpendicular to the axis of the pin shaft (23).