A drum gear coupling facilitating engagement and disengagement

Abstract

The utility model discloses a drum tooth type shaft coupling convenient to disengage, including inner gear ring and the first outer tooth shaft sleeve, second outer tooth shaft sleeve of its inner mesh, first through cover and second through cover are installed respectively in the both ends of inner gear ring, the second through cover is sleeve structure, the second through cover has the avoidance chamber in, the outer peripheral wall of inner gear ring is equipped with annular through slot along its circumferential direction, the outside of inner gear ring is equipped with guide rail, and the guide rail is slidably installed with sliding support, and the sliding support is connected with a hydraulic cylinder, and rotatable installation has rolling wheel on the sliding support, and the rolling wheel is arranged in the annular through slot. The utility model discloses a drum tooth type shaft coupling convenient to disengage, through the axial displacement of inner gear ring, has realized the quick disengagement of first outer tooth shaft sleeve and second outer tooth shaft sleeve, and this structure has broken through the limitation of having to stop and disassemble, can realize instantaneous separation / meshing through the drive of hydraulic cylinder under the running state.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, and in particular to a drum-shaped gear coupling that is easy to engage and disengage. Background Technology

[0002] A drum-type gear coupling is a high-performance flexible coupling used to connect two shafts in different mechanisms to rotate together, and is a key mechanical component for power transmission. It is widely used in heavy-duty, high-speed transmission systems or systems with axial, radial, or angular misalignment, such as the drive devices for tension rollers in steel mills, ship propulsion systems, mining machinery, and large power generation equipment in complex operating conditions. Its structure, as disclosed in Chinese patent application number 202111319527.7, generally includes an internal gear ring and two external gear bushings. The ends of the two external gear bushings extend from both ends of the internal gear ring and mesh with the straight teeth of the internal gear ring. In use, the two external gear bushings are connected to the driving shaft on the active side and the driven shaft on the driven side via keyways or flange structures.

[0003] Existing drum-type gear couplings typically have through-covers fitted onto the two external gear shaft sleeves, which contact the end face of the internal gear ring. These through-covers are rigidly connected to the internal gear ring via bolts, and a sealing ring is installed inside the through-cover to prevent grease leakage. Under this axial restraint structure, the coupling can achieve stable and reliable power transmission. However, this design has significant functional limitations: First, the coupling cannot achieve rapid disconnection; each disassembly requires removing all connecting bolts and using a hydraulic ejection device to separate the interference-fit components, often resulting in 2-4 hours of downtime. Second, in applications such as continuous casting machines in the metallurgical industry that require frequent switching of transmission paths, the traditional structure cannot meet the demands for rapid online switching. Third, when the system experiences abnormal overload, the lack of a rapid disconnection mechanism may cause cascading damage to the equipment. These limitations restrict the application of existing drum-type gear couplings in modern intelligent production lines, emergency backup systems, and other applications requiring rapid engagement and disengagement. Utility Model Content

[0004] The purpose of this invention is to provide a drum-shaped gear coupling that is easy to engage and disengage.

[0005] The technical solution to achieve the purpose of this utility model is: a drum-shaped gear coupling that facilitates engagement and disengagement, comprising a first external gear sleeve, a second external gear sleeve, and an internal gear ring. The outer wall of the end of the first external gear sleeve has a first external straight tooth, the outer wall of the end of the second external gear sleeve has a second external straight tooth, and the inner wall of the internal gear ring has an internal straight tooth. The end of the first external gear sleeve extends into the internal gear ring from one end and is coaxially arranged with the internal gear ring. The first external straight tooth of the first external gear sleeve meshes with the internal straight tooth of the internal gear ring. The end of the second external gear sleeve extends into the internal gear ring from the other end and is coaxially arranged with the internal gear ring. The second external straight tooth of the second external gear sleeve meshes with the internal straight tooth of the internal gear ring. A first through-cap is installed at the end of the internal gear ring that mates with the first external gear sleeve. The first through-cap and the first external gear sleeve... The internal gear ring is movably assembled with a second through cover installed at one end that mates with the second external gear sleeve. The second through cover is a sleeve structure with a clearance cavity inside. The diameter of the clearance cavity is larger than the diameter of the second external straight tooth. The length of the clearance cavity is D1, and the length of the second external straight tooth is D2. The relationship between D1 and D2 is D1>D2. An annular through groove is formed on the outer peripheral wall of the internal gear ring along its circumference. A guide rail is provided on the outer side of the internal gear ring. The guide rail is parallel to the axial direction of the internal gear ring. A sliding bracket is slidably mounted on the guide rail. The sliding bracket is connected to a hydraulic cylinder and is driven by the hydraulic cylinder to move along the guide rail. A rolling wheel is rotatably mounted on the sliding bracket. The axial direction of the rolling wheel is perpendicular to the axial direction of the internal gear ring. The rolling wheel is disposed in the annular through groove.

[0006] Furthermore, the length of the first external straight tooth is D3, and the distance between the first and second external straight teeth is D4. The relationship between D1, D2, D3, and D4 satisfies D1 < (D2 + D3 + D4). Structurally, this configuration ensures that after the inner straight tooth engages with the second external straight tooth, the first external straight tooth remains meshed with the inner straight tooth. In other words, the inner gear ring is always meshed with the first external gear bushing. After the inner straight tooth separates from the second external straight tooth, the first external straight tooth and the inner straight tooth can either mesh or not mesh. Compared to the first external straight tooth being separated from the inner straight tooth, when the first external straight tooth and the inner straight tooth are always meshed, the reassembly of the first external straight tooth and the inner straight tooth is reduced during reconnection. Only the inner straight tooth and the second external straight tooth need to be assembled, simplifying the overall connection and assembly operation.

[0007] Furthermore, the two ends of the first external straight tooth of the first external gear sleeve are chamfered. The chamfering of the two ends of the first external straight tooth facilitates the insertion of the first external gear sleeve into the internal gear ring.

[0008] Furthermore, the two ends of the second external straight tooth of the second external gear sleeve are chamfered. Except during installation, when the second external gear sleeve needs to be inserted into the internal gear ring, after use, the second external gear sleeve needs to frequently move in and out of the internal gear ring during each engagement and disengagement. The chamfering at both ends of the second external straight tooth allows the second external gear sleeve to move in and out of the internal gear ring more smoothly.

[0009] Furthermore, the guide rail includes two parallel guide rods. The span of the two parallel guide rods is relatively large, resulting in better stability when the sliding bracket slides on the two guide rods with a large span. Additionally, there is installation space between the two guide rods, facilitating the installation of the hydraulic cylinder.

[0010] Furthermore, the guide rail is located below the internal gear ring. Its proximity to the ground facilitates the installation of the support structure.

[0011] Furthermore, there are two rolling wheels, each located on one side of the internal gear ring. The two rolling wheels are symmetrically distributed on both sides of the internal gear ring, resulting in a more balanced and stable effect on the internal gear ring.

[0012] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. An avoidance cavity is provided within the second through cover, allowing the internal gear ring to move out of the second external gear sleeve. While no longer meshing with the second external gear sleeve, the internal gear ring and the second external gear sleeve can still move relative to each other, enabling separation. Furthermore, an annular groove is formed on the outer peripheral wall of the internal gear ring, and a rolling wheel movable along a guide rail is provided within the annular groove. Driven by a hydraulic cylinder, the sliding bracket and its rolling wheel move along the guide rail. The moving rolling wheel drives the internal gear ring, allowing it to move out of the second external gear sleeve, thus disconnecting the first and second external gear sleeves; alternatively, the internal gear ring can be re-fitted onto the second external gear sleeve, reconnecting the first and second external gear sleeves.

[0013] This utility model features a drum-shaped gear coupling that facilitates quick engagement and disengagement. By axially shifting the internal gear ring, it achieves rapid engagement and disengagement between the first and second external gear sleeves. This structure overcomes the limitation of requiring machine shutdown for disassembly and can achieve instant separation / engagement during operation via the hydraulic cylinder, meeting the needs of emergency disconnection or rapid restart, or application requirements under different working conditions.

[0014] This utility model relates to a drum-shaped gear coupling that facilitates clutch engagement and disengagement. Under the guidance of the guide rail and the drive structure of the hydraulic cylinder, the sliding bracket and the linked internal gear ring operate smoothly. During the movement of the internal gear ring, the internal gear ring moves relative to the rolling wheel, resulting in less wear on the rolling wheel and a longer service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the drum-shaped gear coupling of this utility model, which facilitates disengagement;

[0016] Figure 2 This is a side perspective view of the drum-shaped gear coupling of this utility model, which facilitates disengagement and engagement.

[0017] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0018] Figure 4 This is a schematic diagram of the sliding bracket and hydraulic cylinder of the drum-shaped gear coupling that facilitates disengagement and engagement according to this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the first and second external gear bushings of the drum-shaped gear coupling of this utility model after they are separated. Detailed Implementation

[0020] The preferred embodiment of the easy-to-engage drum-shaped gear coupling of this utility model is described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 4As shown, a drum-shaped gear coupling for easy engagement and disengagement includes a first external gear sleeve 1, a second external gear sleeve 2, and an internal gear ring 3. The outer wall of the end of the first external gear sleeve 1 has a first external straight tooth 11, the outer wall of the end of the second external gear sleeve 2 has a second external straight tooth 21, and the inner wall of the internal gear ring 3 has an inner straight tooth 31. The end of the first external gear sleeve 1 extends into the internal gear ring 3 from one end and is coaxially arranged with the internal gear ring 3. The first external gear sleeve 1 has a first external straight tooth 11. An external straight tooth 11 meshes with the internal straight tooth 31 of the internal gear ring 3. The end of the second external gear sleeve 2 extends from the other end of the internal gear ring 3 into the internal gear ring 3 and is coaxially arranged with the internal gear ring 3. The second external straight tooth 21 of the second external gear sleeve 2 meshes with the internal straight tooth 31 of the internal gear ring 3. A first through cover 41 is installed at one end of the internal gear ring 3 that mates with the first external gear sleeve 1. The first through cover 41 is movably assembled with the first external gear sleeve 1. A second through cover 42 is installed at one end of the gear ring 3 that mates with the second external gear sleeve 2. The second through cover 42 is movably assembled with the second external gear sleeve 2. The second through cover 42 is a sleeve structure and has a relief cavity 421 inside. The diameter R1 of the relief cavity 421 is larger than the diameter R2 of the second external straight tooth 21. The length of the relief cavity is D1, and the length of the second external straight tooth is D2. The relationship between D1 and D2 is D1>D2. An annular through groove 32 is opened on the outer peripheral wall of the inner gear ring 3 along its circumference. A guide rail 5 is provided on the outer side of the inner gear ring 3. The guide rail 5 is parallel to the axial direction of the inner gear ring 3. A sliding bracket 6 is slidably installed on the guide rail 5. The sliding bracket 6 is connected to a hydraulic cylinder 7 and is driven by the hydraulic cylinder 7 to move along the guide rail 5. A rolling wheel 8 is rotatably installed on the sliding bracket 6. The axial direction of the rolling wheel 8 is perpendicular to the axial direction of the inner gear ring 3. The rolling wheel 8 is disposed in the annular through groove 32.

[0022] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. The first external gear sleeve 1 has a first external straight tooth 11 on its outer wall at one end, each tooth of the first external straight tooth 11 being parallel to the axial direction of the first external gear sleeve 1. The second external gear sleeve 2 has a second external straight tooth 21 on its outer wall at one end, each tooth of the second external straight tooth 21 being parallel to the axial direction of the second external gear sleeve 2. The inner wall of the inner gear ring 3 has inner straight teeth 31, each tooth of the inner straight tooth 31 being parallel to the axial direction of the inner gear ring 3. After the first external gear sleeve 1 and the second external gear sleeve 2 extend into the inner gear ring 3 from both ends, the first external straight tooth 11 and the inner straight tooth 31, and the second external straight tooth 21 and the inner straight tooth 31 mesh, achieving connection. When the first external gear sleeve 1 and the second external gear sleeve 2 are connected, power transmission can be achieved.

[0023] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. The internal gear ring 3 has a first through-cover 41 and a second through-cover 42 installed on both ends. The first through-cover 41 is fixedly connected to the internal gear ring 3, and the second through-cover 42 is fixedly connected to the internal gear ring 3. The first through-cover 41 connected to the internal gear ring 3 is movably assembled with the first external gear sleeve 1, and the second through-cover 42 is movably assembled with the second external gear sleeve 2. The first through-cover 41 and the first external gear sleeve 1, and the second through-cover 42 and the second external gear sleeve 2, can move relative to each other. The first through-cover 41 and the second through-cover 42 limit the movement of the first external gear sleeve 1 and the second external gear sleeve 2, preventing them from disengaging from the internal gear ring 3, thus making the connection between the first external gear sleeve 1 and the second external gear sleeve 2 more reliable. Simultaneously, after installing sealing rings on the inner sides of the first through-cover 41 and the second through-cover 42, leakage of lubricating grease and other substances can also be prevented.

[0024] This utility model relates to a drum-shaped gear coupling that facilitates disengagement. The second through cover 42 is a sleeve structure, and the second through cover 42 has a relief cavity 421. The length D1 of the relief cavity 421 is greater than the length D2 of the second external straight tooth 21. The relief cavity 421 is used to make way for the second external tooth bushing 2 after the internal gear ring 3 is removed, so that without disassembling the second through cover 42, the internal gear ring 3 can be moved, and the second external tooth bushing 2 can be moved out of the internal gear ring 3. The diameter R2 of the second external straight tooth 21 entering the relief cavity 421 is smaller than the diameter R1 of the relief cavity 421. The second external straight tooth 21 is movable with the internal gear ring 3 and completely loses its connection. The first external tooth bushing 1 and the second external tooth bushing 2 can be separated.

[0025] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. An annular through groove 32 is formed on the outer peripheral wall of the internal gear ring 3, which serves to limit the movement of the rolling wheel 8. A guide rail 5 guides the movement of the sliding bracket 6. The sliding bracket 6 is used to mount the rolling wheel 8. A hydraulic cylinder 7 provides power for the movement of the sliding bracket 6.

[0026] This utility model relates to a drum-shaped gear coupling that facilitates disengagement. When the first external gear sleeve 1 and the second external gear sleeve 2 are disconnected, the hydraulic cylinder 7 actuates, driving the sliding bracket 6 and its rolling wheel 8 to move along the guide rail 5. The moving rolling wheel 8 drives the internal gear ring 3, causing the clearance cavity 421 to move closer to one side of the second external gear sleeve 2, and ultimately allowing the internal gear ring 3 to move out of the second external gear sleeve 2. After the second external gear sleeve 2 is located in the clearance cavity 421, the second external gear sleeve 2 and the internal gear ring 3 are separated, thereby disengaging the first external gear sleeve 1 and the second external gear sleeve 2. Figure 5 As shown.

[0027] This utility model relates to a drum-shaped gear coupling that facilitates disengagement. When the first external gear sleeve 1 and the second external gear sleeve 2 are reconnected, the second external gear sleeve 2 and the inner straight tooth 31 of the inner gear ring 3 are aligned. Then, the hydraulic cylinder 7 is activated, driving the sliding bracket 6 and its rolling wheel 8 to move along the guide rail 5. The moving rolling wheel 8 drives the inner gear ring 3, causing the clearance cavity 421 to move closer to one side of the first external gear sleeve 1, and finally allowing the second external gear sleeve 2 to move out of the clearance cavity 421. The inner gear ring 3 is then re-fitted onto the second external gear sleeve 2, and the second external straight tooth 21 of the second external gear sleeve 2 meshes with the inner straight tooth 31 of the inner gear ring 3.

[0028] This utility model relates to a drum-shaped gear coupling that facilitates disengagement. An avoidance cavity 421 is provided within the second through cover 42, allowing the internal gear ring 3 to move out of the second external gear sleeve 2, thus enabling separation. Furthermore, an annular through groove 32 is formed on the outer peripheral wall of the internal gear ring 3, and a rolling wheel 8, movable along the guide rail 5, is provided within the annular through groove 32. Driven by the hydraulic cylinder 7, the sliding bracket 6 and its rolling wheel 8 can move along the guide rail 5. The moving rolling wheel 8 drives the internal gear ring 3, allowing it to move out of the second external gear sleeve 2, thus disconnecting the first external gear sleeve 1 and the second external gear sleeve 2. Alternatively, the internal gear ring 3 can be re-attached to the second external gear sleeve 2, thus reconnecting the first external gear sleeve 1 and the second external gear sleeve 2.

[0029] This utility model features a drum-shaped gear coupling that facilitates quick engagement and disengagement. By axially shifting the internal gear ring 3, it achieves rapid engagement and disengagement between the first external gear sleeve 1 and the second external gear sleeve 2. This structure overcomes the limitation of requiring machine shutdown for disassembly and can achieve instant separation / engagement during operation via the hydraulic cylinder 7, meeting the needs of emergency disconnection or rapid restart, or application requirements under different working conditions.

[0030] This utility model provides a convenient drum-shaped gear coupling. Under the guidance of the guide rail 5 and the driving structure of the hydraulic cylinder 7, the sliding bracket 6 and the linked internal gear ring 3 operate smoothly. During the movement of the internal gear ring 3, the internal gear ring 3 moves relative to the rolling wheel 8, resulting in less wear on the rolling wheel 8 and a longer service life.

[0031] This utility model discloses a drum-shaped gear coupling that facilitates engagement and disengagement. Preferably, the length of the first external straight tooth 11 is D3, and the distance between the first external straight tooth 11 and the second external straight tooth 21 is D4. The relationship between D1, D2, D3, and D4 satisfies D1 < (D2 + D3 + D4). Structurally, this arrangement ensures that after the inner straight tooth 31 engages with the second external straight tooth 21, the first external straight tooth 11 remains meshed with the inner straight tooth 31. In other words, the inner gear ring 3 is always meshed and connected with the first external gear sleeve 1. After the inner straight tooth 31 separates from the second outer straight tooth 21, the first outer straight tooth 11 and the inner straight tooth 31 can engage or disengage. Compared with the first outer straight tooth 11 and the inner straight tooth 31 being separated, when the first outer straight tooth 11 and the inner straight tooth 31 are always engaged, the assembly of the first outer straight tooth 11 and the inner straight tooth 31 can be reduced during subsequent reconnection. Only the inner straight tooth 31 and the second outer straight tooth 21 need to be assembled, which makes the overall connection and assembly operation simpler.

[0032] In this invention, a drum-shaped gear coupling that facilitates engagement and disengagement, preferably, the two ends of the first external straight tooth 11 of the first external gear sleeve 1 are chamfered. After the two ends of the first external straight tooth 11 are chamfered, the first external gear sleeve 1 can be easily inserted into the internal gear ring 3.

[0033] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. Preferably, the two ends of the second external straight tooth 21 of the second external gear sleeve 2 are chamfered. Except during installation, when the second external gear sleeve 2 needs to be inserted into the internal gear ring 3, after use, the second external gear sleeve 2 needs to frequently move in and out of the internal gear ring 3 each time it engages or disengages. The chamfered ends of the second external straight tooth 21 make the movement of the second external gear sleeve 2 into and out of the internal gear ring 3 smoother.

[0034] The present invention provides a convenient clutch-type gear coupling. Preferably, the guide rail 5 includes two parallel guide rods 51. The span of the two parallel guide rods 51 is relatively large. When the sliding bracket 6 slides on the two guide rods 51 with a large span, the stability is better, and there is also an installation space between the two guide rods 51 to facilitate the installation of the hydraulic cylinder 7.

[0035] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. Preferably, the guide rail 5 is located below the internal gear ring 3. Its proximity to the ground facilitates the installation of the support structure.

[0036] This utility model relates to a drum-shaped gear coupling that facilitates engagement and disengagement. Preferably, there are two rolling wheels 8, with each rolling wheel 8 located on one side of the internal gear ring 3. The two rolling wheels 8 are symmetrically distributed on both sides of the internal gear ring 3, resulting in a more balanced and stable effect on the internal gear ring 3.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A drum-shaped gear coupling for easy engagement and disengagement, comprising a first external gear sleeve, a second external gear sleeve, and an internal gear ring, wherein the outer wall of the end of the first external gear sleeve has a first external straight tooth, the outer wall of the end of the second external gear sleeve has a second external straight tooth, the inner wall of the internal gear ring has an internal straight tooth, the end of the first external gear sleeve extends into the internal gear ring from one end and is coaxially arranged with the internal gear ring, the first external straight tooth of the first external gear sleeve meshes with the internal straight tooth of the internal gear ring, the end of the second external gear sleeve extends into the internal gear ring from the other end and is coaxially arranged with the internal gear ring, the second external straight tooth of the second external gear sleeve meshes with the internal straight tooth of the internal gear ring; characterized in that: A first through cover is installed at one end of the internal gear ring that mates with the first external gear sleeve. The first through cover is movably assembled with the first external gear sleeve. A second through cover is installed at one end of the internal gear ring that mates with the second external gear sleeve. The second through cover is movably assembled with the second external gear sleeve. The second through cover is a sleeve structure and has a clearance cavity inside. The diameter of the clearance cavity is larger than the diameter of the second external straight tooth. The length of the clearance cavity is D1, and the length of the second external straight tooth is D2. The relationship between D1 and D2 satisfies D1>D2. An annular through groove is formed on the outer peripheral wall of the internal gear ring along its circumference. A guide rail is provided on the outer side of the internal gear ring. The guide rail is parallel to the axial direction of the internal gear ring. A sliding bracket is slidably installed on the guide rail. The sliding bracket is connected to a hydraulic cylinder and is driven by the hydraulic cylinder to move along the guide rail. A rolling wheel is rotatably installed on the sliding bracket. The axial direction of the rolling wheel is perpendicular to the axial direction of the internal gear ring. The rolling wheel is disposed in the annular through groove.

2. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The length of the first outer straight tooth is D3, the distance between the first outer straight tooth and the second outer straight tooth is D4, and the relationship between D1, D2, D3 and D4 satisfies D1 < (D2 + D3 + D4).

3. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The two ends of the first outer straight tooth of the first outer tooth bushing are chamfered.

4. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The two ends of the second outer straight tooth of the second outer tooth bushing are chamfered.

5. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The guide rail includes two parallel guide rods.

6. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The guide rail is located below the internal gear ring.

7. The easy-to-engage drum-shaped gear coupling according to claim 1, characterized in that: The number of rollers is two, and the two rollers are located on both sides of the internal gear ring.

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