A high-strength cone-hub connecting structure

Abstract

The utility model provides a kind of high-strength hub connecting structure, including hub, transmission hole, shaft sleeve, limit support and rotating shaft, the outside of the hub is connected with external corresponding transmission mechanism, and the middle part of hub is provided with transmission hole, wherein the inside of transmission hole is equipped with shaft sleeve by engaging installation;The middle part of the shaft sleeve is fixed with rotating shaft by limit support, wherein the other end of rotating shaft is connected with external corresponding transmission mechanism.The utility model is equipped with shaft sleeve, can make contact stress evenly distribute, avoid local stress concentration problem, and then can withstand greater torque and alternating load, secondly, the setting of limit support is convenient to disassemble and replace.

Description

Technical Field

[0001] This utility model belongs to the field of transmission technology, and in particular relates to a high-strength tapered hub connection structure. Background Technology

[0002] In industrial transmission fields such as mining machinery, metallurgical equipment, and conveying machinery, the hub and rotating shaft are the core transmission components for torque transmission. Their connection structure directly determines the equipment's transmission efficiency, load-bearing capacity, operational stability, and maintenance costs. Currently, the connection between the hub and rotating shaft in industrial equipment commonly adopts a direct key connection structure. This type of structure is a traditional connection method in the field of mechanical transmission. Its core function is to establish circumferential linkage between the hub and rotating shaft through the key, ensuring that torque is stably transmitted from the hub to the rotating shaft (or vice versa), thereby driving the operation of subsequent working parts (such as rollers, gears, impellers, etc.).

[0003] However, direct-key connection structures have significant technical drawbacks in practical applications, making it difficult to meet the requirements of high-strength, high-reliability, and easy-to-maintain industrial transmissions. Specific problems are as follows:

[0004] First, existing keyed connections rely on the side contact between the key body and the keyway to transmit torque. However, the contact area between the key teeth and the keyway is limited. During torque transmission, the load is mainly concentrated at the root and two sides of the key teeth. When the equipment is subjected to large torque (such as the heavy-load start-up of a mining crusher) or alternating load (such as the frequent start-up and shutdown of conveyor machinery), the key teeth are prone to wear, plastic deformation, or even breakage, leading to transmission failure. Second, in existing keyed connection structures, the key body, the keyway of the rotating shaft, and the keyway of the hub are rigidly fitted. If the key body is worn or the keyway is deformed and damaged, the assembly structure of the hub and the rotating shaft needs to be disassembled as a whole, or even the shaft and hub need to be replaced directly (or the keyway of the rotating shaft or hub needs to be re-milled). This not only results in a long maintenance cycle but also high replacement and processing costs.

[0005] Therefore, it is essential to invent a high-strength tapered hub connection structure. Utility Model Content

[0006] To address the above problems, this utility model proposes a high-strength tapered hub connection structure, and the technical solution used is as follows:

[0007] A high-strength tapered hub connection structure includes a hub, a transmission hole, a bushing, a limiting bracket, and a rotating shaft. The outer side of the hub is connected to a corresponding external transmission mechanism, and a transmission hole is provided in the middle of the hub. A bushing is installed inside the transmission hole through meshing. A rotating shaft is fixed in the middle of the bushing by a limiting bracket, and the other end of the rotating shaft is connected to a corresponding external transmission mechanism.

[0008] Furthermore, both the transmission hole and the bushing are tapered, which increases the contact area between the hub and the bushing.

[0009] Furthermore, the bushing includes a connecting sleeve body, a first tooth, and a second tooth. The connecting sleeve body is conical in shape, and a plurality of first teeth are evenly distributed on the outer surface of the smaller diameter end of the connecting sleeve body, wherein the first teeth are all integrally formed with the connecting sleeve body. A plurality of second teeth are evenly distributed on the outer surface of the larger diameter end of the connecting sleeve body, wherein the second teeth are all integrally formed with the connecting sleeve body. The transmission hole is respectively provided with tooth grooves that are adapted to the first teeth and the second teeth. The first teeth and the second teeth are staggered. A rotating shaft is fixed in the middle of the connecting sleeve body by a limiting bracket. This arrangement can transmit kinetic energy between the conical hub and the rotating shaft. The first teeth and the second teeth can cooperate to transmit the energy, so the contact stress distribution is more uniform and it can withstand greater torque and alternating loads.

[0010] Furthermore, the limiting frame includes a mounting plate, studs, and keys. The mounting plate is fixed to the end of the rotating shaft by studs, and several keys are integrally provided on the side edge of the mounting plate. Several first sliding grooves adapted to the keys are opened on the outer side of the rotating shaft, and several second sliding grooves adapted to the keys are opened on the inner wall of the middle mounting hole of the bushing. This arrangement enables the kinetic energy to be transferred between the bushing and the rotating shaft, and facilitates the replacement of the limiting frame.

[0011] Furthermore, the diameter of the mounting plate is the same as the diameter of the rotating shaft outside the bushing, and larger than the diameter of the rotating shaft inside the bushing. This arrangement can prevent the rotating shaft from slipping off the bushing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The design of this utility model, in which the transmission hole and the bushing adopt a tapered fit, greatly increases the contact area between the hub and the bushing. Combined with the staggered meshing design of the first tooth and the second tooth, the contact stress is evenly distributed on multiple teeth and the tapered surface, avoiding the problem of local stress concentration. This allows it to withstand greater torque and alternating loads, effectively reducing the risk of failure caused by stress concentration.

[0014] 2. The limiting bracket of this utility model allows the key body to be slidably assembled into the interior of the first and second sliding grooves during use, and the mounting plate to be fixed to the rotating shaft by bolts. This enables the key body to transfer kinetic energy between the bushing and the rotating shaft. When the key body is damaged, it can be replaced directly by disassembling the stud. In addition, the mounting plate and the rotating shaft outside the bushing can clamp the bushing, thereby preventing the rotating shaft from slipping off the bushing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is an exploded structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure of the bushing of this utility model.

[0019] Figure 4 This is a structural schematic diagram of the limiting frame of this utility model.

[0020] In the picture:

[0021] 1-Hub, 2-Transmission hole, 3-Shaft sleeve, 31-Connecting sleeve body, 32-First tooth, 33-Second tooth, 4-Limit bracket, 41-Mounting plate, 42-Stud, 43-Key body, 5-Rotating shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Please see Figures 1 to 4As shown, this utility model is a high-strength tapered hub connection structure, including a hub 1, a transmission hole 2, a bushing 3, a limiting frame 4, and a rotating shaft 5. The outer side of the hub 1 is connected to a corresponding external transmission mechanism, and a transmission hole 2 is provided in the middle of the hub 1. The bushing 3 is installed inside the transmission hole 2 through meshing. The rotating shaft 5 is fixed in the middle of the bushing 3 through the limiting frame 4, and the other end of the rotating shaft 5 is connected to a corresponding external transmission mechanism.

[0025] Specifically, both the transmission hole 2 and the bushing 3 are tapered. This design increases the contact area between the hub 1 and the bushing 3, thus enabling the transmission of a much larger load than traditional single-key or spline connections.

[0026] Specifically, the bushing 3 includes a connecting sleeve body 31, first teeth 32, and second teeth 33. The connecting sleeve body 31 is conical in shape, and a plurality of first teeth 32 are evenly distributed on the outer surface of the smaller diameter end of the connecting sleeve body 31, wherein the first teeth 32 are all integrally formed with the connecting sleeve body 31; a plurality of second teeth 33 are evenly distributed on the outer surface of the larger diameter end of the connecting sleeve body 31, wherein the second teeth 33 are all integrally formed with the connecting sleeve body 31; the transmission hole 2 has corresponding teeth 32 and second teeth 33 respectively inside. The toothed grooves are adapted; the first tooth 32 and the second tooth 33 are interleaved; the middle part of the connecting sleeve 31 is fixed with the rotating shaft 5 by the limiting frame 4. In use, the kinetic energy of the cone hub 1 can be transferred to the connecting sleeve 31 by the meshing of the first tooth 32 and the second tooth 33 with the toothed groove inside the transmission hole 2, and finally transferred to the rotating shaft 5 by the limiting frame 4. In the transmission, the first tooth 32 and the second tooth 33 can cooperate to transmit the transmission. Therefore, the contact stress distribution is more uniform and it can withstand greater torque and alternating load.

[0027] Specifically, the limiting frame 4 includes a mounting plate 41, studs 42, and key bodies 43. The mounting plate 41 is fixed to the end of the rotating shaft 5 by studs, and several key bodies 43 are integrally provided on the side edge of the mounting plate 41. Several first sliding grooves adapted to the key bodies 43 are opened on the outer side of the rotating shaft 5, and several second sliding grooves adapted to the key bodies 43 are opened on the inner wall of the mounting hole in the middle of the bushing 3. With this arrangement, the key bodies 43 can be slidably assembled into the inside of the first and second sliding grooves during use, and the mounting plate 41 can be fixed to the rotating shaft 5 by bolts 42. In this way, the kinetic energy between the bushing 3 and the rotating shaft 5 can be transmitted through the key bodies 43. When the key bodies 43 are damaged, the key bodies 43 can be replaced directly by disassembling the studs 42.

[0028] Specifically, the diameter of the mounting plate 41 is the same as the diameter of the rotating shaft 5 outside the bushing 3, and is larger than the diameter of the rotating shaft 5 inside the bushing 3. This arrangement allows the mounting plate 41 and the rotating shaft 5 outside the bushing 3 to clamp the bushing 4, thereby preventing the rotating shaft 5 from slipping off the bushing 3.

[0029] Please see Figure 1-4 As shown, this utility model is a high-strength tapered hub connection structure. Its working principle is as follows: when in use, the kinetic energy of the hub 1 can be transferred to the bushing 3, and the bushing 3 can transfer the kinetic energy to the rotating shaft 5 through the limiting frame 4. Similarly, the kinetic energy of the rotating shaft 5 can be transferred to the hub 1.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-strength tapered hub connection structure, comprising a hub (1), a transmission hole (2), a bushing (3), a limiting bracket (4), and a rotating shaft (5), characterized in that: The outer side of the hub (1) is connected to the corresponding external transmission mechanism, and a transmission hole (2) is provided in the middle of the hub (1). A bushing (3) is installed inside the transmission hole (2) through meshing. A rotating shaft (5) is fixed in the middle of the bushing (3) by a limiting frame (4), and the other end of the rotating shaft (5) is connected to the corresponding external transmission mechanism.

2. The high-strength tapered hub connection structure as described in claim 1, characterized in that: Both the transmission hole (2) and the bushing (3) are tapered.

3. The high-strength tapered hub connection structure as described in claim 1, characterized in that: The bushing (3) includes a connecting sleeve body (31), a first tooth (32), and a second tooth (33). The connecting sleeve body (31) is conical in shape, and a plurality of first teeth (32) are evenly distributed on the outer surface of the small diameter end of the connecting sleeve body (31), wherein the first teeth (32) are all integrally formed with the connecting sleeve body (31). A plurality of second teeth (33) are evenly distributed on the outer surface of the large diameter end of the connecting sleeve body (31), wherein the second teeth (33) are all integrally formed with the connecting sleeve body (31). The transmission hole (2) is provided with tooth grooves that are adapted to the first teeth (32) and the second teeth (33). The first teeth (32) and the second teeth (33) are interleaved. A rotating shaft (5) is fixed in the middle of the connecting sleeve body (31) by a limiting frame (4).

4. The high-strength tapered hub connection structure as described in claim 1, characterized in that: The limiting frame (4) includes a mounting plate (41), studs (42) and key bodies (43). The mounting plate (41) is fixed to the end of the rotating shaft (5) by studs, and a number of key bodies (43) are integrally provided on the side edge of the mounting plate (41). The outer side of the rotating shaft (5) is provided with a number of first sliding grooves adapted to the key bodies (43), and the inner wall of the middle mounting hole of the bushing (3) is provided with a number of second sliding grooves adapted to the key bodies (43).

5. The high-strength tapered hub connection structure as described in claim 4, characterized in that: The diameter of the mounting plate (41) is the same as the diameter of the rotating shaft (5) outside the bushing (3), and is larger than the diameter of the rotating shaft (5) inside the bushing (3).

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