A composite pulley

Abstract

The utility model discloses a kind of composite pulleys, comprising: spoke plate A, spoke plate B, reinforcing plate, wheel core, outer rim, spoke plate A inner ring is equipped with sleeve part A, outer ring is equipped with limiting portion A, spoke plate B inner ring is equipped with sleeve part B, outer ring is equipped with limiting portion B, reinforcing plate is set between spoke plate A and spoke plate B, limiting portion A and limiting portion B form limiting groove between, wheel core one end is inserted end A, the other end is inserted end B, inserted end A is inserted in sleeve part A, inserted end B is inserted in sleeve part B, outer rim is sleeved in limiting groove. Through split type combination structure, the risk that the internal stress generated by integral pouring type structure cannot be released and cracks is avoided, the defect that traditional casting toughness is poor, easy to brittle crack is also avoided, while reinforcing plate is configured between spoke plate A and spoke plate B, improve pulley structure strength, to prolong the service life of pulley.

Description

Technical Field

[0001] This utility model relates to the field of pulley technology, and in particular to an assembled composite pulley. Background Technology

[0002] Pulleys are widely used mechanical devices for lifting heavy objects, mainly including two types: fixed pulleys and movable pulleys. Fixed pulleys are used to change the direction of the rope, while movable pulleys serve to reduce the effort required. The outer circumference of a pulley usually has grooves to accommodate and guide the rope, allowing the movement of goods to be achieved through the traction of the rope.

[0003] Currently, common one-piece pulleys, such as nylon pulleys, cylinder liner pulleys, and cast iron pulleys, are mostly manufactured using mold casting processes. If the residual stress inside these one-piece pulleys is not fully released, it can easily lead to cracking. In addition, one-piece pulleys produced by traditional casting processes also have problems such as complex structure, high cost, unstable mechanical properties, and susceptibility to brittle fracture or plastic instability. Utility Model Content

[0004] This application provides a composite pulley, which solves the problem of cracking caused by the inability to release internal stress in integrally cast pulleys through an assembled design structure.

[0005] This application provides a composite pulley, including:

[0006] Wheel spoke plate A, with a fitting part A on the inner ring and a limiting part A on the outer ring;

[0007] The spoke plate B has an inner ring with a fitting part B and an outer ring with a limiting part B;

[0008] A reinforcing plate is disposed between the spoke plate A and the spoke plate B;

[0009] The spoke plate A, spoke plate B, and reinforcing plate are connected to form an integral structure, and a limiting groove is formed between the limiting part A and the limiting part B;

[0010] The wheel hub has a plug-in end A at one end and a plug-in end B at the other end. The plug-in end A is plugged into the fitting part A, and the plug-in end B is plugged into the fitting part B.

[0011] The outer rim is fitted into the limiting groove.

[0012] The beneficial effects of the above embodiments are as follows: by using a split-type combined structure, the risk of cracking due to unreleased internal stress generated by an integral casting structure is avoided, as well as the defects of poor toughness and easy brittleness of traditional casting. At the same time, the reinforcement plate between spoke plate A and spoke plate B is configured to improve the strength of the pulley structure, thereby extending the service life of the pulley.

[0013] Based on the above embodiments, the embodiments of this application can be further improved as follows:

[0014] In one embodiment of this application: the spoke plate A has a concave-convex reinforcing structure A in its middle, and the spoke plate B has a concave-convex reinforcing structure B in its middle, with the concave portions of reinforcing structures A and B fitting against the surface of the reinforcing plate. The beneficial effects of this step are: by forming a reinforcing structure in the middle of spoke plates A and B through the concave-convex structure, the compressive or impact resistance of the pulley side is significantly improved, increasing structural strength and avoiding the disadvantage of easy deformation of planar structures; by forming a supporting structure for the concave portion through the reinforcing plate, the external forces on reinforcing plates A and B are dispersed, improving the structure's resistance to deformation.

[0015] In one embodiment of this application: the recess of the reinforcing structure A corresponds to the recess of the reinforcing structure B, and the convex portion of the reinforcing structure A corresponds to the convex portion of the reinforcing structure B.

[0016] In one embodiment of this application, it further includes a connector that passes through the recess of reinforcing structure A and the reinforcing plate, and then connects to the recess of reinforcing structure B. The beneficial effect of this step is that the assembly of the overall structure is achieved through the connector, and the rivets are connected at the positions of the recess, the reinforcing plate, and the recess in sequence on the surface, so that the structure will not deform due to riveting force.

[0017] In one embodiment of this application, the spoke plate A and the spoke plate B are riveted together. The beneficial effects of this step are: the riveted structure has the characteristics of high strength, impact resistance, vibration resistance, and anti-loosening.

[0018] In one embodiment of this application: the insertion end A is a conical structure, with the tip of the cone located on the side opposite to the spoke plate B; the insertion end B is a conical structure, with the tip of the cone located on the side opposite to the spoke plate A; the fitting part A is a conical hole structure matching the shape of the insertion end A; and the fitting part B is a conical hole structure matching the shape of the insertion end B. The beneficial effect of this step is: achieving a tight fit by utilizing the self-centering effect of the conical surface.

[0019] In one embodiment of this application, the wheel core further includes a limiting member. Both ends of the wheel core are provided with outer positioning sections, which extend to the outer sides of the corresponding spokes A and B. The outer positioning sections are connected to the limiting member, and the limiting member contacts and limits the outer ends of the corresponding fitting parts A and B. The beneficial effect of this step is that by limiting the outer end faces of spokes A and B on the outer sides of spokes A and B through the limiting member, and cooperating with the tapered insertion structure of the wheel core inside spokes A and B, effective and reliable limiting is formed in both axial directions of the wheel core, thereby positioning the wheel core between spokes A and B. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of a compound pulley mechanism;

[0022] Figure 2 for Figure 1 Sectional view along the middle AA;

[0023] Figure 3 This is a three-dimensional structural diagram of a composite pulley.

[0024] Among them, 1 wheel spoke A, 101 set part A, 102 limiting part A, 103 reinforcing structure A, 2 wheel spoke B, 201 set part B, 202 limiting part B, 203 reinforcing structure B, 3 reinforcing plate, 4 wheel core, 401 insertion end A, 402 insertion end B, 403 outer positioning section, 5 outer wheel rim, 6 connecting piece. Detailed Implementation

[0025] In this application, unless otherwise expressly specified and limited, the terminology used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of different terms in this utility model according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.

[0026] In the description of this application, it should be understood that the directional terms or positional relationships described are based on the orientation or positional relationships shown in the accompanying drawings, or based on the orientation or positional relationships in actual use, and are only for the purpose of facilitating the description of the contents of this application and simplifying the description, and are not intended to indicate or imply that the device or element 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.

[0027] like Figure 1-3 As shown, a composite pulley includes: a spoke plate A1, a spoke plate B2, a reinforcing plate 3, a wheel core 4, and an outer wheel rim 5. The spoke plate A1 has an inner ring with a fitting part A101 and an outer ring with a limiting part A102. The spoke plate B2 has an inner ring with a fitting part B201 and an outer ring with a limiting part B202. The reinforcing plate 3 is disposed between the spoke plate A1 and the spoke plate B2. The spoke plate A1, the spoke plate B2, and the reinforcing plate 3 are connected to form an integral structure. A limiting groove is formed between the limiting part A102 and the limiting part B202. One end of the wheel core 4 is a plug-in end A401, and the other end is a plug-in end B402. The plug-in end A401 is inserted into the fitting part A101, and the plug-in end B402 is inserted into the fitting part B201. The outer wheel rim 5 is fitted into the limiting groove.

[0028] The directional terms used in this application are only for describing the location of the relevant structures in the accompanying drawings to facilitate the description of the relevant structures, and do not limit the actual direction of use.

[0029] Specifically, such as Figure 2 As shown, the wheel core 4 has a ring-shaped structure. The wheel core 4 has a shaft hole in the center. The wheel core 4 is placed horizontally. The left end of the wheel core 4 is the insertion end A401 and the right end is the insertion end B402. The spoke plate A1 is fitted on the left side of the wheel core 4 and the spoke plate B2 is fitted on the right side of the wheel core 4. The spoke plate A1 and the spoke plate B2 form a circular limiting groove on their outer periphery. The outer wheel rim 5 has a circular structure and is fitted in the limiting groove. Several rope grooves are also evenly distributed on the outer periphery of the outer wheel rim 5.

[0030] Specifically, such as Figure 1 , 2 As shown, the spoke plate A1 has a concave-convex reinforcing structure A103 in the middle, and the spoke plate B2 has a concave-convex reinforcing structure B203 in the middle. The concave portions of the reinforcing structures A103 and B203 are in contact with the surface of the reinforcing plate 3. The concave-convex structure forms a reinforcing structure in the middle of the spoke plates A1 and B2, significantly improving the compressive or impact resistance of the pulley side, increasing structural strength, and avoiding the disadvantage of large-area planar structures being easily deformed. The reinforcing plate 3 forms a supporting structure for the concave portions, dispersing the external forces on the reinforcing plates A and B, and improving the structure's resistance to deformation.

[0031] Specifically, such as Figure 1 , 2 As shown, the outer ring (away from the axle) of the reinforcing structure A103 is connected to the limiting part A102, and the inner ring (closer to the axle) is connected to the fitting part A101. The outer ring of the reinforcing structure B203 is connected to the limiting part B202, and the inner ring is connected to the fitting part B201. The spoke plate A1 and the spoke plate B2 are integrally formed structures.

[0032] Specifically, such as Figure 1 , 2 As shown, the concave-convex structure includes a concave portion and a convex portion, which extend radially along spoke plate A1 and spoke plate B2, respectively. The concave and convex portions are arranged alternately in sequence. The concave portion of the reinforcing structure A103 corresponds to the concave portion of the reinforcing structure B203, and the convex portion of the reinforcing structure A103 corresponds to the convex portion of the reinforcing structure B203.

[0033] Specifically, such as Figure 1 , 3 As shown, the composite pulley also includes: a connecting member 6 ( Figure 1 , 3 The image only shows the mounting holes of connector 6 and does not directly depict connector 6. Connector 6 passes through the recess of reinforcing structure A103 and reinforcing plate 3 and connects to the recess of reinforcing structure B203.

[0034] Specifically, the connector 6 uses rivets, and the spoke plate A1 and the spoke plate B2 are riveted together. The riveting structure has the characteristics of high strength, impact resistance, vibration resistance and loosening prevention.

[0035] Specifically, such as Figure 2 As shown, the insertion end A401 has a conical structure, with the cone tip located on the side away from the spoke plate B2. The insertion end B402 has a conical structure, with the cone tip located on the side away from the spoke plate A1. The fitting part A101 is a conical hole structure that matches the shape of the insertion end A401, and the fitting part B201 is a conical hole structure that matches the shape of the insertion end B402. A tight fit is achieved by utilizing the self-centering effect of the conical surface.

[0036] Specifically, such as Figure 2As shown, the composite pulley also includes a limiting member. Both ends of the wheel core 4 are equipped with outer positioning sections 403, which extend to the outer sides of the corresponding spokes A1 and B2. The outer positioning sections 403 are connected to the limiting member, which contacts and limits the outer ends of the corresponding fitting parts A101 and B201. By limiting the outer end faces of spokes A1 and B2 on the outer sides of spokes A1 and B2, and cooperating with the tapered insertion structure of the wheel core 4 inside spokes A1 and B2, effective and reliable limiting is formed in both axial directions of the wheel core 4, thereby positioning the wheel core 4 between spokes A1 and B2.

[0037] Specifically, the limiting component is an elastic retaining ring, and the outer positioning section 403 has a slot on its outer periphery. The slot is located on the outer side of the fitting part A101 and the fitting part B201 and is adjacent to the outer end face of the fitting part A101 and the fitting part B201. The elastic retaining ring is fitted in the slot, and the elastic retaining ring forms a limiting structure on the outer end face to improve the stability of the wheel core 4 positioning.

[0038] Specifically, such as Figure 2 As shown, the cross-sections of the limiting part A102 and the limiting part B202 are bent structures, and include a horizontal side and a vertical side. The horizontal side forms the bottom of the limiting groove, and the vertical side forms the groove wall of the limiting groove. When the spoke plate A1 and the spoke plate B2 are riveted together, the limiting part A102 and the limiting part B202 press tightly against the outer wheel rim 5, so that the outer wheel rim 5 is connected to the spoke plate A1 and the spoke plate B2 to form an integral structure.

[0039] This type of composite pulley, through its split-combination structure, avoids the risk of cracking caused by the inability to release internal stress in a one-piece cast structure. It also avoids the defects of poor toughness and easy brittleness in traditional casting. At the same time, the reinforcing plate 3 is arranged between the spoke plate A1 and the spoke plate B2, which improves the structural strength of the pulley and thus extends its service life.

[0040] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A composite pulley, characterized in that, include: Wheel spoke plate A, with a fitting part A on the inner ring and a limiting part A on the outer ring; The spoke plate B has an inner ring with a fitting part B and an outer ring with a limiting part B; A reinforcing plate is disposed between the spoke plate A and the spoke plate B; The spoke plate A, spoke plate B, and reinforcing plate are connected to form an integral structure, and a limiting groove is formed between the limiting part A and the limiting part B; The wheel hub has a plug-in end A at one end and a plug-in end B at the other end. The plug-in end A is plugged into the fitting part A, and the plug-in end B is plugged into the fitting part B. The outer rim is fitted into the limiting groove.

2. The composite pulley according to claim 1, characterized in that, The spoke plate A has a concave-convex reinforcing structure A in the middle, and the spoke plate B has a concave-convex reinforcing structure B in the middle. The concave parts of the reinforcing structures A and B are in contact with the surface of the reinforcing plate.

3. The composite pulley according to claim 2, characterized in that, The recessed portion of the reinforcing structure A corresponds to the recessed portion of the reinforcing structure B, and the convex portion of the reinforcing structure A corresponds to the convex portion of the reinforcing structure B.

4. The composite pulley according to claim 3, characterized in that, Also includes: A connector that passes through the recess of the reinforcing structure A and the reinforcing plate, and then connects to the recess of the reinforcing structure B.

5. The composite pulley according to claim 4, characterized in that, The spoke plate A and the spoke plate B are riveted together.

6. The composite pulley according to claim 1, characterized in that, The plug-in end A has a conical structure, with the tip of the cone located on the side away from the spoke plate B. The plug-in end B has a conical structure, with the tip of the cone located on the side away from the spoke plate A. The fitting part A has a conical hole structure that matches the shape of the plug-in end A. The fitting part B has a conical hole structure that matches the shape of the plug-in end B.

7. The composite pulley according to claim 1, characterized in that, It also includes: a limiting component, wherein both ends of the wheel core are provided with an outer positioning section, the outer positioning section extends to the outer side of the corresponding wheel spoke A and wheel spoke B respectively, the outer positioning section is connected to the limiting component, and the limiting component contacts and limits the outer end of the corresponding fitting part A and fitting part B.

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