Split tensioning type traction sheave bushing and assembling method

Abstract

This invention discloses a split-type tensioning traction sheave bushing, comprising several circumferentially split components. Each circumferentially split component is connected by a connecting assembly, and the components are connected to form a support assembly. A composite layer is connected to the outer circumferential surface of the support assembly, and a traction groove is provided on the composite layer. This invention provides a split-type tensioning traction sheave bushing that allows for quick separation of the composite layer from the circumferentially split components, thereby improving the efficiency of composite layer replacement. It also ensures a tight connection between the composite layer and the circumferentially split components, reducing subsequent maintenance costs. The gap in the support assembly can accommodate thermal expansion changes, thus reducing the risk of excessive expansion of the support assembly damaging the composite layer material and protecting the overall structural stability of the traction sheave.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and in particular to a split-type tensioning traction sheave bushing and its assembly method. Background Technology

[0002] With the development of existing technologies, the safety requirements for elevators in the field of elevator technology are gradually increasing. The core component of a vertical elevator is the traction part. The friction between the traction sheave and the steel wire rope connecting the car is generated through the traction of the traction sheave, thereby driving the car to rise. Therefore, it is crucial to improve the friction between the traction sheave and the steel wire rope while ensuring traction stability.

[0003] For example, publication number "CN108657915A" discloses "a traction sheave structure," including a traction sheave connector with an outer circular working surface. The traction sheave connector is made of metal and also includes a composite material layer. The composite material layer is disposed on the outer circular working surface of the traction sheave connector, and the composite material layer forms a traction sheave groove or traction sheave surface. However, in practical applications, because the entire traction sheave adopts an inner and outer layered structure, friction is mainly provided by the outer composite material layer. The inner and outer layers have different service lives, and replacing the outer layer alone is cumbersome; replacing the entire traction sheave directly would be too costly. Summary of the Invention

[0004] In view of the problems mentioned in the background art, such as the cumbersome individual replacement and high overall replacement cost of the existing technology, the present invention provides a split tensioning traction wheel bushing, which can quickly separate the composite layer from the circumferential split component, thereby improving the efficiency of composite layer replacement and ensuring a tight connection between the composite layer and the circumferential split component, thus reducing subsequent maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A split-type tensioning traction sheave bushing includes several circumferential split parts, each of which is connected by a connecting component. The circumferential split parts are connected to form a support component, and a composite layer is connected to the outer circumferential surface of the support component. A traction groove is provided on the composite layer. In this application, the traction sheave includes a composite layer disposed on the outer side and a support assembly disposed on the inner side, consisting of several circumferentially split components. Each circumferentially split component is generally made of metal, providing high structural strength. The outer composite layer provides a large coefficient of friction, ensuring that the traction sheave can provide stable support while maintaining significant friction with the wire rope. The circumferential direction of each split component is the direction of rotation, and the component is split in the circumferential direction to form multiple circumferentially split components. These components are connected and fixed by a connecting assembly, forming a quickly detachable support assembly. When the circumferentially split components form a complete ring or circle, they effectively connect and tighten the composite layer. The composite layer is an elastic composite material with a certain degree of elasticity. When some or all of the circumferentially split components of the support assembly are disassembled, the connection between the composite layer and the support assembly weakens, allowing for rapid removal of the composite layer. By installing a new composite layer and reassembling the circumferential components, they can be quickly connected to the new composite layer, improving assembly and disassembly efficiency and ensuring the support stability of the support assembly. The diameter of the support assembly can be subtly altered by adding or removing shims between the circumferential components, thereby increasing the tension between the support assembly and the composite layer and improving the connection between them. This connection can be fine-tuned, enhancing adaptability. Furthermore, since the support assembly is composed of circumferential components, gaps still exist between them despite their interconnection. Because the support assembly is generally a metal structure with a higher coefficient of thermal expansion than the composite layer, these gaps can accommodate the thermal expansion changes of the support assembly, reducing the risk of excessive expansion damaging the composite layer material and thus protecting the overall structural stability of the traction sheave.

[0007] Preferably, the support component is provided with several fixing grooves, and the composite layer includes several composite strips arranged along the axial direction of the support component. The composite strips are connected to the fixing grooves, and the traction grooves are arranged on the composite strips. The composite layer is divided into several composite strips in the axial direction, and the composite strips are connected to the fixing grooves to avoid interference and compression between the composite strips. Furthermore, the traction grooves are arranged on the composite strips. Through this arrangement, different composite strips can be replaced individually during the replacement of the composite layer. Since the wire rope wraps around the composite layer multiple times, but only half a turn on the innermost and outermost sides, and is subject to external environmental interference, such as sand and gravel interference, the frictional wear between the composite strips will vary. Therefore, this application uses separate composite strips combined to form the composite layer, thereby enabling the individual replacement of composite strips with excessive frictional wear, further reducing replacement costs and improving replacement efficiency.

[0008] Preferably, the circumferential split component includes a tensioning split component, and along the tensioning direction of the tensioning split component, the tensioning split component includes an outer ring surface and an inner ring surface, wherein the arc length of the outer ring surface is less than or equal to the arc length of the inner ring surface. The circumferential split components include tensioning split components. During assembly, the remaining circumferential split components are first connected. Then, the tensioning split components are installed between the axial split components through the remaining notch positions using a tensioning tool, and the composite layer is tensioned. Because the composite layer is elastic and not made of metal, the connection between the composite layer and the circumferential split components is not tight when the tensioning split components are not connected, which facilitates adjustment of the positional relationship. Especially when the composite layer consists of multiple composite strips, the engagement relationship between the composite strips and the fixing groove can be quickly and easily adjusted when the tensioning split components are not installed, which is convenient for adjustment. Subsequently, the tensioning split components are installed to ensure the tightness of the connection between the composite layer and the support component. Furthermore, the arc length of the outer ring surface is set to be less than or equal to the arc length of the inner arc surface, thereby ensuring smooth tensioning during the tensioning process and avoiding interference.

[0009] Preferably, the circumferential split component includes a tensioning split component. The tensioning split component has a forward-tilting surface and a backward-tilting surface at both ends along the rotation direction. The forward-tilting surface is inclined towards the center of the circumferential split component, and the backward-tilting surface is inclined away from the center of the circumferential split component. Setting the two end faces of the tensioning split component as forward-tilting and backward-tilting surfaces, with the forward-tilting surface inclined towards the center and the backward-tilting surface inclined away from the center, means that the forward-tilting and backward-tilting surfaces face opposite directions. Taking the tensioning split component at the top as an example, the forward-tilting surface faces downward and the backward-tilting surface faces upward, thereby increasing the contact area with adjacent circumferential split components. Furthermore, during tensioning, because the forward-tilting surface faces downward, the end faces of adjacent circumferential split components face upward, which facilitates the placement of a gasket and provides effective support on one side of the tensioning split component, allowing a gasket to be placed on the supported side. The tensioning is controlled on one side, facilitating control of the tension level. The tensioning component can be moved obliquely towards the notch to complete the tensioning, or it can be tensioned by the forward-tilted surface abutting against the adjacent circumferential component and the rear-tilted surface rotating around the forward-tilted surface. This installation method allows the fixing groove near the forward-tilted surface to engage with the composite layer / composite strip first, and then gradually engage through rotation. This ensures a smooth connection between the fixing groove and the composite layer / composite strip, avoiding jamming during the overall engagement (where air cannot be expelled in time between the composite strip and the fixing groove), thereby reducing the adjustment frequency and improving installation efficiency.

[0010] Preferably, a cover plate is detachably connected to the end face of the support assembly, and the cover plate is connected to each circumferential component. By setting the cover plate, each circumferential component can be fixedly constrained, thereby ensuring that the tension between the support assembly and the composite layer is not affected, and providing axial direction limitation for the wire rope.

[0011] Preferably, along the circumferential direction of the support assembly, each circumferential split component has a connecting half-groove at its end. Adjacent connecting half-grooves are simultaneously engaged with fixing components. A limiting groove is provided within each connecting half-groove, and a fixing block is provided on each fixing component. The fixing block engages with the limiting groove. This connection and fixing via the connecting half-grooves, with each fixing component simultaneously connecting the connecting half-grooves of two adjacent circumferential split components, allows for pre-assembly of the circumferential split components before the cover plate is connected. The engagement between the limiting groove and the fixing block ensures the stability of the connection.

[0012] Preferably, each of the composite strips is provided with connecting teeth, and each of the circumferential split components is provided with limiting teeth, with the connecting teeth engaging with the limiting teeth. Providing connecting teeth on the composite strips allows them to engage with the limiting teeth on the circumferential split components, thereby limiting and constraining the composite strips in the circumferential direction and preventing relative sliding between the composite strips and the fixing groove, which would affect the stability of the traction between the traction sheave and the wire rope.

[0013] Preferably, the connecting teeth are disposed on the end face of the composite strip along the axial direction of the support component, and the limiting teeth on the circumferential split component are positioned corresponding to the connecting teeth. Disposing the connecting teeth on the end face of the composite strip along the axial direction facilitates faster engagement and fixation during the tensioning process of the circumferential split component. Furthermore, since each tooth is exposed on the outer side, adjustment is easier, and it provides guidance during engagement with the fixing groove.

[0014] The present invention also provides a method for assembling a split-type tensioning traction sheave bushing, comprising the following steps:

[0015] S1. Connect and fix the circumferential split parts, except for the tensioning split parts, inside the ring of the composite layer;

[0016] S2. The various circumferential components in step S1 are combined to form a notched support ring, which includes a tensioning notch.

[0017] S3, including a tensioning workpiece, connecting the tensioning workpiece to the tensioning split part, driving the tensioning split part to move toward the tensioning notch and abut against the composite layer at the tensioning notch;

[0018] S4. After tightening the entire composite layer to the required size, stop tightening and assemble the various circumferential components, including the tightening component. The above installation steps ensure both rapid installation of the composite layer and a tight connection between the composite layer and the support components. The tightening tool is a common tool in existing technology, capable of expanding and pushing in a certain direction to connect the tightening component into the tightening notch. The assembly of the circumferential components takes place within the annular space of the composite layer. Each circumferential component, connected by fasteners and tightened by the tightening tool, supports the composite layer from the inside out, ensuring both assembly efficiency and a tight connection between the support components and the composite layer.

[0019] Preferably, in step S3, the forward-tilted surface of the tensioning component abuts against the end face of the adjacent circumferential component, and then the tensioning component is rotated until its backward-tilted surface abuts against the end face of the adjacent circumferential component. By first abutting the forward-tilted surface of the tensioning component against the end face of the circumferential component, the tensioning component first obtains a fixed fulcrum. A shim can be added at this point to prevent slippage, improving adjustment efficiency. Furthermore, since the tensioning component is tilted, meaning the portion closer to the forward-tilted surface is closer to the composite layer, the fixing and engagement process between the composite layer and the tensioning component involves gradual tilting and engagement, allowing for smoother correction and adjustment, and avoiding the problem of internal air not being able to escape.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) By setting up a support assembly composed of several circumferential split parts, and then attaching a composite layer on it, the installation efficiency of the composite layer can be improved, and the tightness of the connection between it and the support assembly can be guaranteed. At the same time, it is convenient for subsequent installation and disassembly. Since the support assembly is formed by circumferential split parts, there are gaps between each circumferential split part, which can adapt to thermal expansion and protect the structure of the composite layer.

[0022] (2) Setting multiple composite strips to form a composite layer makes it easier to replace a composite strip with excessive friction wear, reducing maintenance costs. Furthermore, when installing support components in the composite layer, it is easier to adjust and correct each composite strip.

[0023] (3) Setting the outer ring arc length to be less than or equal to the inner ring arc length can facilitate subsequent tensioning operations, making the tensioning operations smoother and avoiding interference.

[0024] (4) The tensioning split part is provided with a forward tilting surface and a backward tilting surface at both ends, which enables the tensioning split part to rotate and tighten, thereby maintaining a fixed section, facilitating the installation of gaskets, and enabling it to smoothly engage and fix with the composite strip in a progressive manner, making it easier to expel internal air and reduce the probability of adjustment.

[0025] (5) Connecting teeth are provided on the composite strip to prevent slippage between the composite strip and the fixed groove, and to withstand the tangential force generated between the composite layer and the support component by the friction of the wire rope in the traction groove, thereby improving the stability of traction. Attached Figure Description

[0026] Figure 1 This is an exploded view of the present invention.

[0027] Figure 2 This is an isometric view of the support component in this invention.

[0028] Figure 3 This is a side view of the present invention.

[0029] Figure 4 This is a partial exploded view of the present invention.

[0030] Figure 5 This is an assembly diagram of the present invention.

[0031] Figure 6 This is a flowchart of Example 2.

[0032] Figure 7 This is an assembly diagram of Example 3.

[0033] In the picture:

[0034] 1 Support component, 11 Circumferential split component, 12 Fixing groove, 13 Tensioning split component, 14 Outer ring surface, 15 Inner ring surface, 16 Forward inclined surface, 17 Backward inclined surface, 18 Tensioning notch;

[0035] 2 composite layer, 21 traction groove, 22 composite strip;

[0036] 3. Cover plate;

[0037] 4 connecting components, 41 connecting half-groove, 42 fastener, 43 limiting groove, 44 fixing block;

[0038] 51 Connecting tooth, 52 Limiting tooth. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1:

[0041] like Figure 1 , 2 As shown in Figure 3, a split-type tensioning traction sheave bushing includes three circumferential split parts 11, with connecting components 4 connecting each circumferential split part 11. The circumferential split parts 11 are connected to form a support component 1. A composite layer 2 is connected to the outer circumferential surface of the support component 1, and a traction groove 21 is provided on the composite layer 2. A plurality of fixing grooves 12 are provided on the support component 1. The composite layer 2 includes a plurality of composite strips 22 arranged along the axial direction of the support component 1. Each composite strip 22 is engaged with the corresponding fixing groove 12, and the traction groove 21 is provided on the composite strip 22.

[0042] In this embodiment, the traction sheave includes a composite layer 2 disposed on the outer side and a support assembly 1 disposed on the inner side, consisting of a plurality of circumferentially split parts 11. Each circumferentially split part 11 in this embodiment is made of metal, providing high structural strength. The outer composite layer 2 provides a large coefficient of friction, thereby ensuring that the traction sheave can provide stable support while maintaining a large frictional force with the wire rope. The circumferential direction of the circumferentially split parts 11 is the direction of rotation. The sheave is split in the circumferential direction to form multiple circumferentially split parts 11. Each circumferentially split part 11 is connected and fixed by a connecting assembly 4, thereby forming a quickly detachable support assembly 1. That is, when all the circumferentially split parts 11 are fully formed... After the ring or circle is formed, the tensioning composite layer 2 can be effectively connected. Composite layer 2 is an elastic composite material with a certain degree of elasticity. When some or all of the circumferential split parts 11 of the support assembly 1 are disassembled, the connection between composite layer 2 and the support assembly 1 weakens, allowing for quick removal of composite layer 2 and installation of a new composite layer 2. The circumferential split parts 11 can then be reassembled and quickly connected to the new composite layer 2, thereby improving disassembly and assembly efficiency and ensuring the support stability of the support assembly 1. Furthermore, since the diameter of the support assembly 1 can be slightly altered by adding or removing shims between the circumferential split parts 11, the tension between the support assembly 1 and the composite layer 2 is increased. The connection between the composite layer 2 and the support component 1 is improved, and the value of this connection can be fine-tuned to improve adaptability. Since the support component 1 is composed of circumferentially split parts 11, although these parts are interconnected, gaps still exist. Because the support component 1 is a metal structure, its coefficient of thermal expansion is greater than that of the composite layer 2. Therefore, the gaps in the support component 1 can accommodate the thermal expansion changes of the support component 1, thereby reducing the risk of excessive expansion of the support component 1 damaging the material of the composite layer 2, and protecting the overall structural stability of the traction sheave. In this embodiment, the composite layer 2 is divided into several composite strips 22 in the axial direction, and the composite strips 22 are connected to the fixing groove 1. 2. Connection is used to avoid interference and compression between the composite strips 22, and the traction groove 21 is set on the composite strip 22. With the above arrangement, different composite strips 22 can be replaced individually during the replacement of composite layer 2. Since the wire rope will wrap around the composite layer 2 multiple times, while the innermost and outermost sides only wrap half a turn, and is subject to external environmental interference, such as sand and gravel interference, the frictional wear between the composite strips 22 will be different. Therefore, this application adopts a split composite strip 22 combination to form composite layer 2, so that the composite strip 22 with excessive frictional wear can be replaced individually, further reducing replacement cost and improving replacement efficiency.

[0043] like Figure 5As shown, in this embodiment, the circumferential split component 11 includes a tensioning split component 13. Along the tensioning direction of the tensioning split component 13, the tensioning split component 13 includes an outer ring surface 14 and an inner ring surface 15. The arc length of the outer ring surface 14 is less than or equal to the arc length of the inner ring surface 15. In this embodiment, the outer arc length 14 and the inner arc length 15 are the same.

[0044] The circumferential split component 11 includes a tensioning split component 13. During assembly, the remaining circumferential split components 11 are first connected. Then, the tensioning split component 13 is installed between the axial split components from the remaining notch position using a tensioning tool, and the composite layer 2 is tensioned. Since the composite layer 2 is elastic and not made of metal, the connection between the composite layer 2 and the circumferential split component 11 is not tight when the tensioning split component 13 is not connected, which facilitates adjustment of the positional relationship. Especially when the composite layer 2 is composed of multiple composite strips 22, the engagement relationship between the composite strips 22 and the fixing groove 12 can be quickly and easily adjusted when the tensioning split component 13 is not installed, which facilitates adjustment. Then, the tensioning split component 13 is installed by tensioning to ensure the tightness of the connection between the composite layer 2 and the support component 1. The arc length of the outer ring surface 14 is set to be equal to the arc length of the inner arc surface, that is, the two ends of the tensioning split component 13 are in the same direction as the tensioning direction, thereby ensuring that it can be tightened smoothly during the tensioning process and avoiding interference.

[0045] like Figure 1 As shown, a cover plate 3 is detachably connected to the end face of the support component 1, and the cover plate 3 is connected to each circumferential split component 11. By setting the cover plate 3, each circumferential split component 11 can be fixedly constrained, thereby ensuring that the tension between the support component 1 and the composite layer 2 is not affected, and providing axial direction limit for the wire rope. The detachable connection includes, but is not limited to, bolt connection, pin connection, etc.

[0046] like Figure 4 As shown, along the circumferential direction of the support component 1, each circumferential split part 11 is provided with a connecting half groove 41 at its end. Adjacent connecting half grooves 41 are simultaneously engaged with a fixing part 42. A limiting groove 43 is provided in the connecting half groove 41. A fixing block 44 is provided on the fixing part 42. The fixing block 44 engages with the limiting groove 43.

[0047] The connection and fixation are achieved through the connecting half groove 41. The fixing member 42 simultaneously connects the connecting half groove 41 of two adjacent circumferential split parts 11, thereby enabling the pre-assembly of the circumferential split parts 11 before the cover plate 3 is connected. The engagement connection between the limiting groove 43 and the fixing block 44 ensures the stability of the connection. The connecting component can also be other devices that can achieve temporary fixation. This embodiment only uses this structure as an example for illustration.

[0048] like Figure 3As shown, each composite strip 22 is provided with a connecting tooth 51, and each circumferential split part 11 is provided with a limiting tooth 52. The connecting tooth 51 and the limiting tooth 52 are engaged and connected. The connecting tooth 51 is provided on the end face of the composite strip 22 along the axis of the support component 1, and the position of the limiting tooth 52 on the circumferential split part 11 corresponds to the connecting tooth 51.

[0049] The connecting teeth 51 on the composite strip 22 can engage with the limiting teeth 52 on the circumferential split part 11, thereby limiting and constraining the composite strip 22 in the circumferential direction and preventing relative sliding between the composite strip 22 and the fixing groove 12, which would affect the stability of the traction between the traction sheave and the wire rope. The connecting teeth 51 are set on the end face of the composite strip 22 in the axial direction, which makes it easier to engage and fix it more quickly during the tensioning process of the circumferential split part 11. Since each tooth is exposed on the outside, it is easier to adjust and can also play a guiding role during engagement with the fixing groove 12.

[0050] Example 2:

[0051] like Figure 5 , 6 As shown, this embodiment discloses an assembly method for a split tensioning traction sheave bushing, which includes the following steps: S1, connecting and fixing the circumferential split parts 11, excluding the tensioning split parts 13, inside the ring of the composite layer 2;

[0052] S2. The various circumferential split parts 11 in step S1 are combined to form a notched support ring, which includes a tensioning notch 18.

[0053] S3 includes a tensioning workpiece, which is connected to the tensioning split part 13, causing the tensioning split part 13 to move toward the tensioning notch 18 and abut against the composite layer 2 at the tensioning notch 18.

[0054] S4. After the entire composite layer 2 is tightened to the required size, stop the tightening and assemble the various circumferential components 11, including the tightening component 13.

[0055] Through the above installation steps, the rapid installation of the composite layer 2 can be ensured, while also ensuring the tightness of the connection between the composite layer 2 and the support component 1. The tensioning workpiece is a common tool in the prior art, which can expand and push in a certain direction, thereby connecting the tensioning split part 13 into the tensioning notch 18. The assembly process of the circumferential split parts 11 is carried out in the inner space of the composite layer 2. That is, each circumferential split part 11 is connected by the fixing part 42 and tensioned by the tensioning workpiece, supporting the composite layer 2 from the inside out, which ensures both assembly efficiency and the tightness of the connection between the support component 1 and the composite layer 2.

[0056] Example 3:

[0057] like Figure 7 As shown, unlike embodiments 1 and 2, the circumferential split component 11 in this embodiment includes a tensioning split component 13. The tensioning split component 13 has a forward-tilting surface 16 and a backward-tilting surface 17 at both ends along the rotation direction. The forward-tilting surface 16 is inclined towards the side closer to the center of the circumferential split component 11, and the backward-tilting surface 17 is inclined away from the center of the circumferential split component 11. In step S3 of embodiment 2, the forward-tilting surface 16 of the tensioning split component 13 is brought into contact with the end face of the adjacent circumferential split component 11, and then the tensioning split component 13 is rotated until the backward-tilting surface 17 is brought into contact with the end face of the adjacent circumferential split component 11.

[0058] The two end faces of the tensioning split component 13 are configured as a forward-inclined surface 16 and a backward-inclined surface 17, where the forward-inclined surface 16 is inclined closer to the center and the backward-inclined surface 17 is inclined away from the center. This means that the forward-inclined surface 16 and the backward-inclined surface 17 face opposite directions. In this embodiment, the tensioning split component 13 is located at the uppermost end as an example. Figure 7 As shown, the forward-tilting surface 16 is positioned downwards, and the backward-tilting surface 17 is positioned upwards, thereby increasing the contact area with the adjacent circumferential split component 11. During tensioning, because the forward-tilting surface 16 is downwards, the end faces of the adjacent circumferential split component 11 are upwards, facilitating the placement of shims. The shims are placed on the end faces of the adjacent circumferential split components that the forward-tilting surface abuts against. Since the end faces are upwards, placement is easier. Furthermore, because the tensioning component is rotated, the shims do not generate significant lateral force; the main force is circumferential compression, ensuring the shims are stably placed on the end faces. This makes tensioning adjustments more flexible and provides effective support on one side of the tensioning component 13. The shims can be placed on the supported side, and tensioning can be controlled from the other side, facilitating control of the tension level. The tensioning component 13 is tensioned by the forward-tilting surface 16 abutting against the adjacent circumferential split component 11, and the backward-tilting surface 17 rotating around the forward-tilting surface 16. This installation method allows the fixing groove 12 near the forward-tilting surface 16 to engage with the composite layer 2 / composite strip 22 first, and then gradually engage through rotation. This ensures a smooth connection between the fixing groove 12 and the composite layer 2 / composite strip 22, avoiding jamming during the overall engagement (where air cannot be expelled from between the composite strip 22 and the fixing groove 12 in time). This reduces the adjustment frequency and improves installation efficiency. By first abutting the forward-tilting surface 16 of the tensioning component 13 with the end face of the circumferential component 11, the tensioning component 13 first obtains a fixed fulcrum. Shims can be added at this point to prevent slippage and improve adjustment efficiency. Furthermore, since the tensioning component 13 is tilted, meaning the part near the forward-tilting surface 16 is closer to the composite layer 2, the engagement of the composite layer 2 and the tensioning component 13 is a gradual tilting engagement, allowing for smoother correction and adjustment, and avoiding the problem of internal air not being able to escape.

Claims

1. A split-tensioning type traction sheave bushing, characterized by, The device includes several circumferentially split components, which are connected by connecting components. These components form a support assembly. A composite layer is attached to the outer surface of the support assembly, and a traction groove is provided on the composite layer. The support assembly has several fixing grooves. The composite layer includes several composite strips arranged along the axial direction of the support assembly. The composite strips are connected to the fixing grooves, and the traction grooves are located on the composite strips. Each composite strip has connecting teeth, and each circumferentially split component has limiting teeth. The connecting teeth engage with the limiting teeth. The connecting teeth are located on the end face of the composite strip along the axial direction of the support assembly, and the positions of the limiting teeth on the circumferentially split components correspond to the connecting teeth.

2. A split-tensioning type traction sheave bushing according to claim 1, wherein The circumferential split component includes a tensioning split component. Along the tensioning direction of the tensioning split component, the tensioning split component includes an outer ring surface and an inner ring surface, and the arc length of the outer ring surface is less than or equal to the arc length of the inner ring surface.

3. The split-type tensioning traction sheath bushing according to claim 1, characterized in that, The circumferential split component includes a tensioning split component. The tensioning split component has a forward-tilting surface and a backward-tilting surface at both ends along the rotation direction. The forward-tilting surface is inclined towards the side closer to the center of the circumferential split component, and the backward-tilting surface is inclined away from the center of the circumferential split component.

4. A split-type tensioning traction sheath bushing according to claim 1, characterized in that, A cover plate is detachably connected to the end face of the support component, and the cover plate is connected to each circumferential split component.

5. A split-type tensioning traction sheath bushing according to claim 1, characterized in that, Along the circumferential direction of the support component, each of the circumferential split parts is provided with a connecting half-groove at its end, and adjacent connecting half-grooves are simultaneously engaged with a fixing member.

6. A split-tensioning type traction sheave bushing according to claim 5, wherein A limiting groove is provided in the connecting half groove, and a fixing block is provided on the fixing member, which engages with the connecting limiting groove.

7. An assembly method for a split-tensioning pulley bushing according to any one of claims 1 to 6, characterized in that It includes the following steps: S1. Connect and fix the circumferential split parts, except for the tensioning split parts, inside the ring of the composite layer; S2. The various circumferential components in step S1 are combined to form a notched support ring, which includes a tensioning notch. S3, including a tensioning workpiece, connecting the tensioning workpiece to the tensioning split part, driving the tensioning split part to move toward the tensioning notch and abut against the composite layer at the tensioning notch; S4. After tightening the entire composite layer to the required size, stop tightening and assemble the various circumferential components, including the tightening component.

8. The assembly method according to claim 7, characterized in that, In step S3, the forward inclined surface of the tensioning component abuts against the end face of the adjacent circumferential component, and then the tensioning component is rotated until the rear inclined surface abuts against the end face of the adjacent circumferential component.

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