Long-spacing crowned tooth coupling

Abstract

The utility model relates to a long-spacing crowned tooth coupling which comprises a first shaft sleeve and a second shaft sleeve, and is characterized by further comprising a floating intermediate shaft and unilateral flexible coupling units which are arranged at the two ends of the floating intermediate shaft and are the same in structure, and each unilateral flexible coupling unit comprises an inner tooth shell and a tooth shaft sleeve. The two ends of the floating middle shaft are in shaft hole fit with the corresponding gear shaft sleeves respectively, the inner tooth shells are arranged on the peripheries of the gear shaft sleeves, inner teeth of the inner tooth shells are meshed with outer teeth of the gear shaft sleeves, and the first shaft sleeve and the second shaft sleeve are detachably connected with the corresponding inner tooth shells respectively. The one-piece structure suitable for the ultra-long interval torque transmission requirement is simple in structure and convenient to install, the assembling efficiency is improved, and the operation and maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a coupling, in particular to a long-spacing drum-shaped gear coupling, belonging to the technical field of transmission equipment. Background Art

[0002] Due to space limitations in the transmission chain of heavy industry equipment, there is a need for extra-long distance torque transmission between the drive and the load. In addition, due to the harsh working conditions, the service life of the coupling is relatively short and requires more frequent replacement.

[0003] In order to meet the transmission requirements of heavy industry equipment, the existing technology is to specially configure an intermediate drive shaft supported by a bearing seat to fill the extra-long distance between the drive and the load. At the same time, the bearing seat also needs to be equipped with an additional base with high rigidity and very high precision to facilitate the installation and positioning of the intermediate drive shaft. In this way, in actual use, ordinary couplings are respectively connected to the drive, intermediate drive shaft and load. This method has the following disadvantages: First, the use of a decentralized transmission structure and on-site assembly is not only very inconvenient and increases the structural cost, but also has low assembly efficiency and requires continuous debugging to ensure coaxial accuracy. Second, if the ordinary coupling needs to be maintained or replaced due to a fault, the equipment or intermediate drive shaft needs to be moved, which not only increases the operation and maintenance cost, but also is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of the utility model is to provide a long-spacing drum gear coupling with an integrated structure suitable for ultra-long-spacing torque transmission requirements, which is not only simple in structure and easy to install, but also improves assembly efficiency and reduces operation and maintenance costs.

[0005] In order to achieve the above object, the technical solution of the utility model is: a long-pitch drum gear coupling, including a first shaft sleeve and a second shaft sleeve, the innovation of which is that it also includes a floating intermediate shaft, a first unilateral flexible coupling unit and a second unilateral flexible coupling unit,

[0006] The two ends of the floating intermediate shaft are respectively provided with a first unilateral flexible coupling unit and a second unilateral flexible coupling unit.

[0007] The first unilateral flexible coupling unit includes a first inner tooth outer shell and a first gear shaft sleeve. One end of the floating intermediate shaft is matched with the first gear shaft sleeve in a shaft hole. The first inner tooth outer shell is arranged on the outer periphery of the first gear shaft sleeve, and the inner teeth of the first inner tooth outer shell are engaged with the outer teeth of the first gear shaft sleeve. The first inner tooth outer shell is detachably connected to the first shaft sleeve.

[0008] The second unilateral flexible coupling unit includes a second inner tooth outer shell and a second gear shaft sleeve. The other end of the floating intermediate shaft is matched with the second gear shaft sleeve in an axial hole. The second inner tooth outer shell is arranged on the outer periphery of the second gear shaft sleeve, and the inner teeth of the second inner tooth outer shell are engaged with the outer teeth of the second gear shaft sleeve. The second inner tooth outer shell and the second shaft sleeve are detachably connected.

[0009] In the above technical solution, the first unilateral flexible coupling unit also includes a first buffer limit pad, which is arranged between the first shaft sleeve and the first gear sleeve, and the second unilateral flexible coupling unit also includes a second buffer limit pad, which is arranged between the second shaft sleeve and the second gear sleeve.

[0010] In the above technical solution, the first shaft sleeve has a connecting flange, which is connected to the flange of the first inner tooth outer shell through locking bolts, and the second shaft sleeve has a connecting flange, which is connected to the flange of the second inner tooth outer shell through locking bolts.

[0011] In the above technical solution, both ends of the floating intermediate shaft have journals, and the journals at both ends of the floating intermediate shaft are respectively matched with the first gear shaft sleeve and the second gear shaft sleeve in the form of shaft holes.

[0012] In the above technical solution, both ends of the floating intermediate shaft are provided with keys or keyways coaxially arranged with the first shaft sleeve and the second shaft sleeve respectively.

[0013] In the above technical solution, both the first inner tooth outer shell and the second inner tooth outer shell are provided with injection holes for conveniently injecting grease therein, and sealing plugs are provided at the injection holes.

[0014] The positive effects of the present invention are: after adopting the long-spacing drum gear coupling of the present invention, since the present invention further comprises a floating intermediate shaft, a first unilateral flexible coupling unit and a second unilateral flexible coupling unit,

[0015] The two ends of the floating intermediate shaft are respectively provided with a first unilateral flexible coupling unit and a second unilateral flexible coupling unit.

[0016] The first unilateral flexible coupling unit includes a first inner tooth outer shell and a first gear shaft sleeve. One end of the floating intermediate shaft is matched with the first gear shaft sleeve in a shaft hole. The first inner tooth outer shell is arranged on the outer periphery of the first gear shaft sleeve, and the inner teeth of the first inner tooth outer shell are engaged with the outer teeth of the first gear shaft sleeve. The first inner tooth outer shell is detachably connected to the first shaft sleeve.

[0017] The second unilateral flexible coupling unit includes a second inner tooth outer shell and a second gear shaft sleeve. The other end of the floating intermediate shaft is matched with the second gear shaft sleeve in an axial hole. The second inner tooth outer shell is arranged on the outer periphery of the second gear shaft sleeve, and the inner teeth of the second inner tooth outer shell are engaged with the outer teeth of the second gear shaft sleeve. The second inner tooth outer shell is detachably connected to the second shaft sleeve.

[0018] The utility model simplifies the design of the coupling-related parts of the transmission chain with ultra-long spacing torque transmission, integrates the floating intermediate shaft and the coupling into an integrated structure, eliminates the intermediate transmission shaft structure that requires bearing seat support in the prior art, and also eliminates the additionally configured high-rigidity and very high-precision base, greatly reducing the number of parts, optimizing the design and reducing the cost of use.

[0019] At the same time, the utility model is very convenient to use, improves assembly efficiency, and achieves the purpose of reducing costs and increasing efficiency. When the meshing size of the coupling is worn and needs to be replaced or maintained, there is no need to move the equipment on both sides. The floating intermediate shaft can be directly pulled out as a whole and replaced with a single-sided flexible coupling unit, which greatly increases on-site operability, reduces operation and maintenance costs, and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a specific implementation method of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and given embodiments, but the present invention is not limited thereto.

[0022] like Figure 1 As shown, a long-spacing drum gear coupling comprises a first shaft sleeve 1 and a second shaft sleeve 5, a floating intermediate shaft 2, a first unilateral flexible coupling unit 3 and a second unilateral flexible coupling unit 4.

[0023] The two ends of the floating intermediate shaft 2 are respectively provided with a first unilateral flexible coupling unit 3 and a second unilateral flexible coupling unit 4.

[0024] The first unilateral flexible coupling unit 3 includes a first inner tooth housing 31 and a first gear sleeve 32. One end of the floating intermediate shaft 2 is matched with the first gear sleeve 32 in a shaft hole. The first inner tooth housing 31 is arranged on the outer periphery of the first gear sleeve 32 and forms a sealed connection through sealing. The inner teeth of the first inner tooth housing 31 are engaged with the outer teeth of the first gear sleeve 32. The first inner tooth housing 31 is detachably connected to the first shaft sleeve 1.

[0025] The second unilateral flexible coupling unit 4 includes a second inner tooth outer shell 41 and a second gear shaft sleeve 42. The other end of the floating intermediate shaft 2 is matched with the second gear shaft sleeve 42 in an axial hole. The second inner tooth outer shell 41 is arranged on the outer periphery of the second gear shaft sleeve 42 and forms a sealed connection through sealing. The inner teeth of the second inner tooth outer shell 41 are engaged with the outer teeth of the second gear shaft sleeve 42. The second inner tooth outer shell 41 is detachably connected to the second shaft sleeve 5.

[0026] like Figure 1 As shown, in order to prevent the floating intermediate shaft from axially moving during rotation, it can be buffered and limited. The first unilateral flexible coupling unit 3 also includes a first buffering and limiting pad 33, which is arranged between the first shaft sleeve 1 and the first gear sleeve 32. The second unilateral flexible coupling unit 4 also includes a second buffering and limiting pad 43, which is arranged between the second shaft sleeve 5 and the second gear sleeve 42. The buffering and limiting pad is preferably an elastic pad, such as a rubber pad or a silicone pad. Of course, the axial limiting method of the floating intermediate shaft is not limited to this. The inner hole of the end of the gear sleeve can also be set to a tapered hole structure or other methods can be used to achieve the purpose of buffering and limiting.

[0027] like Figure 1 As shown, in order to enable the shaft sleeve and the inner tooth housing to be quickly positioned and assembled, the first shaft sleeve 1 has a connecting flange, and the connecting flange of the first shaft sleeve 1 is connected to the flange of the first inner tooth housing 31 through a locking bolt, and the second shaft sleeve 5 has a connecting flange, and the connecting flange of the second shaft sleeve 5 is connected to the flange of the second inner tooth housing 41 through a locking bolt.

[0028] like Figure 1 As shown, in order to improve the rationality of the structure, the floating intermediate shaft 2 has journals 21 at both ends. The journals 21 at both ends of the floating intermediate shaft 2 are respectively matched with the first gear shaft sleeve 32 and the second gear shaft sleeve 42 in the form of shaft holes.

[0029] like Figure 1 As shown, in order to form a good transmission relationship between the drive and the floating intermediate shaft and the load, both ends of the floating intermediate shaft 2 have keys or keyways coaxially arranged with the first shaft sleeve 1 and the second shaft sleeve 5 respectively.

[0030] like Figure 1 As shown, in order to ensure smooth engagement between the inner tooth housing and the gear shaft sleeve and to prevent jamming, the first inner tooth housing 31 and the second inner tooth housing 41 are both provided with injection holes for convenient injection of grease therein, and sealing plugs are provided at the injection holes.

[0031] The utility model simplifies the design of the coupling-related parts of the transmission chain with ultra-long spacing torque transmission, integrates the floating intermediate shaft and the coupling into an integrated structure, eliminates the intermediate transmission shaft structure that requires bearing seat support in the prior art, and also eliminates the additionally configured high-rigidity and very high-precision base, greatly reducing the number of parts, optimizing the design and reducing the cost of use.

[0032] At the same time, the utility model is very convenient to use, improves assembly efficiency, and achieves the purpose of reducing costs and increasing efficiency. When the meshing size of the coupling is worn and needs to be replaced or maintained, there is no need to move the equipment on both sides. The floating intermediate shaft can be directly pulled out as a whole and replaced with a single-sided flexible coupling unit, which greatly increases on-site operability, reduces operation and maintenance costs, and improves maintenance efficiency.

[0033] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A long-pitch drum gear coupling, comprising a first shaft sleeve (1) and a second shaft sleeve (5), characterized in that: It also includes a floating intermediate shaft (2), a first unilateral flexible coupling unit (3) and a second unilateral flexible coupling unit (4), The two ends of the floating intermediate shaft (2) are respectively provided with a first unilateral flexible coupling unit (3) and a second unilateral flexible coupling unit (4). The first unilateral flexible coupling unit (3) includes a first inner tooth outer shell (31) and a first tooth shaft sleeve (32), one end of the floating intermediate shaft (2) is matched with the first tooth shaft sleeve (32) in the form of an axial hole, the first inner tooth outer shell (31) is arranged on the outer periphery of the first tooth shaft sleeve (32), and the inner teeth of the first inner tooth outer shell (31) are meshed with the outer teeth of the first tooth shaft sleeve (32), and the first inner tooth outer shell (31) is detachably connected to the first shaft sleeve (1). The second unilateral flexible coupling unit (4) includes a second inner tooth outer shell (41) and a second gear shaft sleeve (42), the other end of the floating intermediate shaft (2) is matched with the second gear shaft sleeve (42) in an axial hole, the second inner tooth outer shell (41) is arranged on the outer periphery of the second gear shaft sleeve (42), and the inner teeth of the second inner tooth outer shell (41) are engaged with the outer teeth of the second gear shaft sleeve (42), and the second inner tooth outer shell (41) and the second shaft sleeve (5) are detachably connected.

2. The long-spacing drum gear coupling according to claim 1, characterized in that: The first unilateral flexible coupling unit (3) further comprises a first buffering and limiting pad (33), which is arranged between the first shaft sleeve (1) and the first gear sleeve (32); the second unilateral flexible coupling unit (4) further comprises a second buffering and limiting pad (43), which is arranged between the second shaft sleeve (5) and the second gear sleeve (42).

3. The long-spacing drum gear coupling according to claim 1, characterized in that: The first shaft sleeve (1) has a connecting flange, and the connecting flange of the first shaft sleeve (1) is connected to the flange of the first inner tooth housing (31) through locking bolts. The second shaft sleeve (5) has a connecting flange, and the connecting flange of the second shaft sleeve (5) is connected to the flange of the second inner tooth housing (41) through locking bolts.

4. The long-spacing drum gear coupling according to claim 1, characterized in that: Both ends of the floating intermediate shaft (2) are provided with shaft necks (21), and the shaft necks (21) at both ends of the floating intermediate shaft (2) are respectively matched with the first gear shaft sleeve (32) and the second gear shaft sleeve (42) in the form of shaft holes.

5. The long-spacing drum gear coupling according to claim 1, characterized in that: Both ends of the floating intermediate shaft (2) are respectively provided with keys or keyways coaxially arranged with the first shaft sleeve (1) and the second shaft sleeve (5).

6. The long-spacing drum gear coupling according to claim 1, characterized in that: The first inner tooth outer shell (31) and the second inner tooth outer shell (41) are both provided with injection holes for conveniently injecting lubricating grease therein, and sealing plugs are provided at the injection holes.

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