Rim division type assembled belt pulley and manufacturing method thereof

Abstract

The present invention relates to a rim-divided assembly-type pulley and a method for manufacturing the same, the rim-divided assembly-type pulley comprising: a hub cooperating with a shaft; a plurality of spokes disposed in a radial shape about the hub; a plurality of divided rims which are arranged in a circular shape to form unit rims, so that the plurality of unit rims are superposed and matched with the other ends of the spokes to form a rim which is fixed in a concentric manner with respect to the hub; and a plurality of coupling members coupled to the plurality of divided rims to maintain the state in which the divided rims constitute the rim.

Description

Technical Field

[0001] The present invention relates to a pulley and a method for manufacturing the same, and more particularly to a rim-split assembled pulley and a method for manufacturing the same that can be manufactured into various specifications by stamping and assembling without performing a casting or forging process. Background Art

[0002] Generally speaking, V-belt pulleys are used to convert the speed of a motor and transmit it to a driven member in an environment where a motor is used. Therefore, the type and number of forks of the belt may be changed according to the power to be transmitted and the characteristics of the mechanical device, and the type and outer diameter of the pulley may also be changed.

[0003] The basic working principle of this V-belt pulley is to have two pulleys separated by a certain distance, wherein a driving side pulley on one side is driven by a motor, and a driven side pulley on the other side receives power transmission from the motor through a V-belt connected to the driving side pulley to rotate or move the driven member, thereby being used in various ways in various industrial and workplace environments.

[0004] Since the V-belt used in this V-belt pulley is in the shape of a "V", a wedge effect is generated when contacting the V-belt, thereby obtaining a greater contact force than a flat belt pulley, so that the V-belt is not easy to fall off.

[0005] However, the existing pulleys are mainly manufactured by casting and other methods, so there are problems such as difficulty in manufacturing when a large pulley is required. In addition, when the pulley is manufactured by casting, environmental pollution and other problems may occur due to the harsh casting environment and casting operation. Under the trend of changing awareness of the environment, there is a problem that the manufacturing method of the pulley that is not environmentally friendly becomes inappropriate. Summary of the invention

[0006] Technical issues

[0007] In order to solve the problems existing in the above-mentioned prior art, the purpose of the present invention is to make it into an assembly form through stamping without performing a casting or forging process, so that it is easy to make it into various specifications and forms, especially easy to make large and small pulleys. Compared with the existing casting production method with serious environmental pollution, it can achieve environmentally friendly production, and contribute to the work efficiency and health of the workers by improving the working environment.

[0008] Problem Solving Solutions

[0009] In order to solve the problems mentioned above, according to one aspect of the present invention, there is provided a rim-split assembled pulley, which includes: a hub, which cooperates with a shaft; a plurality of spokes (Arm), each of which cooperates with the above-mentioned hub at one end, so as to be arranged radially with the above-mentioned hub as the center; a split rim, which is composed of a component with an arc shape, and a plurality of split rims are arranged in a circle to form a unit rim, so that a plurality of the above-mentioned unit rims are superimposed and cooperate with the other end of each of the above-mentioned spokes to form a rim fixed in a manner concentric with the above-mentioned hub; and a plurality of connecting components, which are connected to the plurality of split rims to maintain the state in which the above-mentioned split rims constitute the above-mentioned rim.

[0010] The hub may be provided with a spoke engaging portion in a protruding manner along the outer peripheral surface in order to be bolt-connected with the spokes, and a plurality of connecting holes may be provided on the spoke engaging portion in a manner that is spaced apart from each other.

[0011] The hub is provided with a plurality of spoke mating parts arranged side by side, so that the plurality of spokes can be mated in a manner of being arranged along the length direction of the shaft.

[0012] The spokes may be provided with reinforcing wings at one side or both sides by bending.

[0013] The spokes may be provided with reinforcing wings at a side portion or both sides by bending, and when a plurality of the spokes are arranged, the reinforcing wings are arranged in a relative manner.

[0014] When the split rim is formed into the unit rim, a bending portion can be formed on the outer peripheral surface of the unit rim by stamping and bending. When the unit rims are symmetrically stacked on each other to form the rim, a groove for accommodating a V-belt can be formed between the bending portions open to the outside.

[0015] It may further include: a first spacer, which is penetrated by the connecting bolt of the connecting component in order to keep the width of the above-mentioned groove portion corresponding to the specifications of the above-mentioned V-belt, so that the first spacer is located between the above-mentioned divided rims positioned on both sides of the above-mentioned groove portion; and a second spacer, which is penetrated by the connecting bolt of the above-mentioned connecting component, so that the second spacer is located between the above-mentioned divided rims positioned between a pair of groove portions, so that the second spacer and the first spacer are alternately arranged on the above-mentioned connecting bolt.

[0016] The rims may be maintained in a state where the boundary portion between the split rim and another split rim is arranged so that the adjacent unit rims are shifted from each other, and the rims are formed by the connecting member.

[0017] The connecting member may include: a connecting bolt whose distal end penetrates through the plurality of stacked divided rims and protrudes; and a connecting nut connected to the distal end of the connecting bolt to prevent the stacked divided rims from being separated.

[0018] The connecting bolt passes through the other end of the spoke, so that the spoke can be fixed to the split rim through the connecting member.

[0019] A third spacer may be further included, which is overlapped with the other end of the spoke and inserted between the split rims located on both sides of the groove for accommodating the V-belt and penetrated by the connecting bolt, thereby maintaining the width of the groove according to the specification of the V-belt.

[0020] According to another aspect of the present invention, a method for manufacturing a rim-split assembled pulley is provided, which is a method for manufacturing a rim-split assembled pulley according to one aspect of the present invention, wherein a plurality of split rims composed of components having an arc shape are arranged into a circle to form a unit rim, and a rim composed of a plurality of superimposed unit rims is maintained in shape by connecting the rims with connecting components, and the ends of a plurality of spokes radially matched with the hub as the center are matched with the rim, thereby fixing the rim in a manner concentric with the hub.

[0021] The ends of the spokes may be fixed to the rim by a connecting member that connects the spokes so as to maintain the shape of the rim.

[0022] Effects of the Invention

[0023] By utilizing the rim-split assembled pulley and its manufacturing method according to the present invention, the assembled pulley is made into an assembled form through stamping without performing a casting or forging process, so that it can be easily made into various specifications and forms. In particular, due to the split structure of the rim, large pulleys can be easily made. Compared with the existing casting production method that causes serious environmental pollution, environmentally friendly production can be achieved, and it has the effect of contributing to the work efficiency and health of the workers by improving the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a perspective view illustrating a rim split type assembled pulley according to an embodiment of the present invention.

[0025] Figure 2 1 is a side view illustrating a rim split type assembled pulley according to an embodiment of the present invention.

[0026] Figure 3 1 is a partially exploded perspective view illustrating a rim-split assembly pulley according to an embodiment of the present invention.

[0027] Figure 4 is based on Figure 2 Cross-sectional view along line AA.

[0028] Figure 5 is based on Figure 2 Cross-sectional view of line BB.

[0029] Figure 6 1 is a perspective view illustrating a hub of a rim split type assembled pulley and a method for manufacturing the same according to an embodiment of the present invention.

[0030] Figure 7 The present invention is a perspective view showing a unit rim arranged by split rims, illustrating a rim split type assembled pulley and a method for manufacturing the same according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention can have various embodiments through various changes, so specific embodiments will be shown and described in the drawings as examples. In addition, the present invention is not limited to these specific embodiments, but should be understood to include all changes, equivalents or substitutes belonging to the technical ideas of the present invention.

[0032] Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. The same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and repeated description thereof will be omitted.

[0033] Figure 1 is a perspective view illustrating a rim split type assembled pulley according to an embodiment of the present invention, Figure 2 is a side view illustrating a rim split type assembled pulley according to an embodiment of the present invention, Figure 3 1 is a partially exploded perspective view illustrating a rim-split assembly pulley according to an embodiment of the present invention.

[0034] Reference Figures 1 to 3 According to an embodiment of the present invention, the rim-split assembled pulley 100 may include a hub 110, spokes 120, a split rim 130, and a connecting member 150. In addition, according to an embodiment of the present invention, the rim-split assembled pulley 100 may be made of steel, but is not necessarily limited thereto, and may be made of a variety of metals or metal alloys including steel used for stainless steel (Steel Use Stainless, SUS) or stainless steel (Stainless Steel, SS), and each component may be made of different types of materials as needed.

[0035] The hub 110 is matched with the shaft so as to receive the rotational force provided by the motor or the like or by the V-belt, and the shaft matching portion 111 for matching with the shaft is provided at the center. The shaft can be directly fixed to the shaft matching portion 111 of the hub 110 or the tapered bushing can be detachably mounted to the shaft matching portion 111 of the hub 110 so as to facilitate matching with the shaft. The tapered bushing can also be formed as a whole with the hub 110.

[0036] Reference Figure 3 and Figure 6 In order to be bolted to the spokes 120 to be described below, the hub 110 may be provided with a spoke mating portion 112 in a protruding manner along the outer circumferential surface, and a plurality of connecting holes 113 may be provided on the spoke mating portion 112 in a manner that is spaced apart from each other, and a plurality of spoke mating portions 112 may be arranged side by side, so that a plurality of spokes 120 may be mated in a manner that is arranged along the length direction of the shaft.

[0037] Reference Figures 1 to 3 , each of the spokes 120 has one end engaged with the hub 110, so that the plurality of spokes 120 are arranged radially with the hub 110 as the center. The spokes 120 can be manufactured by a stamping process or the like, and a fixing member 123 such as a bolt penetrating through a first fixing hole 121 formed at one end is connected to the connecting hole 113 of the spoke engaging portion 112, so that one end can be fixed to the hub 110. In addition, the spokes 120 can have a second fixing hole 122 formed at the other end so that a connecting bolt 151 of a connecting member 150 to be described later or a separate bolt can be inserted.

[0038] The spoke 120 may be provided with a reinforcing wing 124 on one or both sides by bending. Therefore, the spoke 120 is enhanced in bending strength by the reinforcing wing 124, so that the durability of the connection structure between the hub 110 and the rim can be improved. In addition, when a plurality of spokes 120 are arranged, the reinforcing wing 124 can be arranged in a relative manner, thereby not only having a beautiful appearance from an aesthetic point of view, but also minimizing interference with other components from a functional point of view, so that the reliability of the rotation action can be improved.

[0039] Reference Figures 1 to 3 and Figure 7 The split rim 130 is composed of a component having an arc shape, and a plurality of split rims 130 are arranged in a circular shape to form a unit rim 140, so that the plurality of unit rims 140 are stacked and matched with the other ends of the spokes 120 to form a rim fixed in a concentric manner to the hub 110. The split rim 130 has a plate-like structure so that it can maintain a stable stacked state, and a plurality of third fixing holes 132 can be formed along the length direction to allow the connecting bolts 151 of the connecting component 150 to be described later to pass through.

[0040] When the rim 130 is divided to form a unit rim 140, a bending portion 131 can be formed on the outer peripheral surface side of the unit rim 140 by stamping and bending. When the unit rims 140 are superimposed symmetrically on each other to form a rim, a groove portion 161 for accommodating a V-belt can be formed between the bending portions 131 open to the outside.

[0041] First and second spacers 162 and 164 may be further provided between the divided rims 130 to maintain the width of the groove 161 and to maintain a stable superposition state. In order to maintain the width of the groove 161 corresponding to the specification of the V-belt, the connecting bolt 151 of the connecting member 150 to be described below passes through the first spacer 162 so that the first spacer 162 is located between the divided rims 130 located on both sides of the groove 161, so that the first spacer 162 can be fixed between the divided rims 130. The connecting bolt 151 of the connecting member 150 passes through the second spacer 164 so that the second spacer 164 is located between the pair of divided rims 130 located between the pair of grooves 161, so that the second spacer 164 and the first spacer 162 are alternately arranged on the connecting bolt 151.

[0042] When the boundary between the split rim 130 and another split rim 130 is arranged in a state where the adjacent unit rims 140 are arranged to be staggered, the state of forming the rim can be maintained by the connecting member 150. For example, the split rim 130 can be arranged in a zigzag shape along the superposition direction of the unit rims 140, thereby being superimposed in a state where a plurality of split rims 130 are connected to a single split rim 130. Therefore, the boundary between the split rims 130 forming the unit rim 140 is staggered in the adjacent unit rims 140, so that the split rim 130 can play a role of connecting the split rims 130 constituting other adjacent unit rims 140. This connection structure between the split rims 130 is particularly useful when the split rims 130 are all of the same specifications. However, the specifications such as the length of the split rim 130 can also be changed, so that the split rim 130 plays a role of connecting the split rims 130 constituting other adjacent unit rims 140 through the connecting member 150.

[0043] The number of unit rims 140 formed by arranging a plurality of divided rims 130 may be twice the number corresponding to the number of V-belts connected in order to form a rim. In addition, each unit rim 140 may be composed of different numbers of divided rims 130, including six divided rims 130 as in the present embodiment or three divided rims 130 as another example. When the divided rims 130 are composed of six as in the present embodiment, each divided rim 130 divides one unit rim 140 by 60 degrees, and when the divided rims 130 are composed of three, each divided rim 130 divides one unit rim 140 by 120 degrees. In addition, when the unit rim 140 is composed of six divided rims 130, the unit rim 140 can be configured so that the unit rim 140 adjacent to the unit rim 140 is rotated 30 degrees and arranged, and another unit rim 140 adjacent to the adjacent unit rim 140 is further rotated 30 degrees and arranged. Of course, as an example, the rotation angle here can be changed. In this way, the rotation angle can also be determined separately according to the number of divided rims 130 constituting the unit rim 140.

[0044] The plurality of connecting members 150 are connected to the plurality of segmented rims 130 to maintain the segmented rims 130 as a rim. For example, the connecting member 150 may include: a connecting bolt 151, the end of which penetrates through the stacked plurality of segmented rims 130 and protrudes; and a connecting nut 152, which is connected to the end of the connecting bolt 151, thereby preventing the stacked segmented rims 130 from being separated.

[0045] Reference Figures 3 to 5 As for the spoke 120, the other end thereof can be fixed to the unit rim 140 by a separate bolt, but it is not limited thereto. As in the present embodiment, the connecting bolt 151 can also penetrate the other end, so that the spoke 120 is fixed to the split rim 130 through the connecting member 150. At this time, the third spacer 163 is inserted between the split rims 130 located on both sides of the groove 161 for accommodating the V-belt and is penetrated by the connecting bolt 151, so that the width of the groove 161 can be maintained according to the specification of the V-belt.

[0046] A manufacturing method of a rim-split assembled pulley according to another embodiment of the present invention is a manufacturing method of a rim-split assembled pulley 100 according to an embodiment of the present invention, which comprises arranging a plurality of split rims 130 composed of components having an arc shape into a circle to form a unit rim 140, and maintaining the shape of the rim formed by stacking the plurality of unit rims 140 by connecting them with a connecting member 150, and respectively engaging the ends of a plurality of spokes 120 radially engaged with the hub 110 with the rim, thereby fixing the rim in a manner concentric with the hub 110. Here, the ends of the spokes 120 may be fixed to the rim by the connecting member 150 connected in a manner to maintain the shape of the rim.

[0047] On the other hand, the unit rims 140 can cooperate with each other through welding, and the welding results can be leveled after welding to perform verticality modifications and concentricity checks, etc. For the unmodified parts, finishing operations can also be performed through Computerized Numerical Control (CNC) lathe operations.

[0048] By utilizing the rim-split assembled pulley and its manufacturing method according to the present invention, the pulley can be easily manufactured into various specifications and shapes by stamping into an assembled form without performing a casting or forging process. In particular, due to the split structure of the rim, pulleys of large sizes can be easily manufactured.

[0049] In addition, according to the present invention, compared with the existing casting production method that causes serious environmental pollution, environmentally friendly production can be achieved, and by improving the working environment, it is possible to contribute to the working efficiency and health of workers.

[0050] Although the present invention has been described with reference to the drawings, various modifications are possible without departing from the technical concept of the present invention. Therefore, the scope of the present invention should not be limited to the above-mentioned embodiments, but should be based on the claims and the scope equivalent to the claims.

[0051] Industrial Applicability

[0052] The present invention provides a rim-split assembled pulley and a method for manufacturing the same, which is manufactured into an assembled form by stamping without performing a casting or forging process, thereby being easily manufactured into various specifications and forms. In particular, due to the split structure of the rim, large pulleys can be easily manufactured. Compared with the existing casting manufacturing method that causes serious environmental pollution, environmentally friendly manufacturing can be achieved, and the working efficiency and health of operators can be contributed to by improving the working environment.

Claims

1. A rim split type assembled pulley, characterized in that: include: a hub, which cooperates with the shaft; A plurality of spokes, each of which has one end matched with the hub, so as to be arranged in a radial shape with the hub as the center; A split rim, which is composed of a component having an arc shape, and a plurality of split rims are arranged in a circle to form a unit rim, so that a plurality of the unit rims are superimposed and matched with the other ends of each of the spokes to form a rim fixed in a concentric manner to the hub; and A plurality of connecting members are connected to the plurality of divided rims to maintain a state in which the divided rims constitute the rim.

2. The rim-split assembled pulley according to claim 1, characterized in that: The hub is provided with a spoke engaging portion in a protruding manner along the outer peripheral surface for bolt connection with the spokes, and a plurality of connecting holes are provided in the spoke engaging portion at intervals.

3. The rim-split assembled pulley according to claim 2, characterized in that: The hub is provided with a plurality of spoke engaging portions arranged side by side, so that the plurality of spokes engage with each other in a manner of being arranged along the length direction of the shaft.

4. The rim-split assembled pulley according to claim 1, characterized in that: The spoke is provided with reinforcing wings at one side or both sides by bending.

5. The rim-split assembled pulley according to claim 3, characterized in that: The spokes are provided with reinforcing wings at one side or both sides by bending, and when a plurality of the spokes are arranged, the reinforcing wings are arranged in a relative manner.

6. The rim-split assembled pulley according to claim 1, characterized in that: When the above-mentioned split rim forms the above-mentioned unit rim, a bending portion is formed on the outer peripheral surface side of the above-mentioned unit rim by stamping and bending. When the above-mentioned unit rims are superimposed symmetrically on each other to form the above-mentioned rim, a groove portion for accommodating a V-belt is formed between the above-mentioned bending portions opened to the outside.

7. The rim-split assembled pulley according to claim 6, characterized in that: Further including: a first spacer which is penetrated by a connecting bolt of the connecting member in order to maintain the width of the groove portion in accordance with the specification of the V-belt, so that the first spacer is located between the split rims positioned on both sides of the groove portion; and The second spacers are penetrated by the fastening bolts of the fastening member so that the second spacers are located between the split rims positioned between the pair of grooves, and the second spacers and the first spacers are alternately arranged on the fastening bolts.

8. The rim-split assembled pulley according to claim 1, characterized in that: The rims are maintained in a state where the boundary portion between the split rim and another split rim is arranged so as to be offset from each other in the adjacent unit rims, and the rims are maintained in a state where they are configured by the connecting member.

9. The rim-split assembled pulley according to claim 1, characterized in that: The above-mentioned connecting parts include: a connecting bolt, the distal end of which penetrates through the stacked plurality of divided rims and protrudes; and, A connecting nut is connected to the end of the connecting bolt to prevent the superimposed split rims from being separated.

10. The rim-split assembled pulley according to claim 9, characterized in that: The connecting bolt passes through the other end of the spoke, so that the spoke is fixed to the split rim via the connecting member.

11. The rim-split assembled pulley according to claim 10, characterized in that: It further comprises a third spacer which is overlapped with the other end of the spoke and inserted between the split rims located on both sides of the groove for accommodating the V-belt and penetrated by the connecting bolts, thereby maintaining the width of the groove in accordance with the specification of the V-belt.

12. A method for manufacturing a rim-split assembled pulley, the method for manufacturing a rim-split assembled pulley according to any one of claims 1 to 11, wherein the method for manufacturing a rim-split assembled pulley is characterized in that: A plurality of divided rims formed by parts having an arc shape are arranged in a circle to form a unit rim, and a rim formed by stacking a plurality of the above-mentioned unit rims is maintained in shape by connecting the connecting parts, and the ends of the respective plurality of spokes radially matched with the above-mentioned hub as the center are matched with the above-mentioned rim, thereby fixing the above-mentioned rim in a manner concentric with the above-mentioned hub.

13. The method for manufacturing a rim-split assembled pulley according to claim 12, characterized in that: The ends of the spokes are fixed to the rim via connecting members that connect the spokes so as to maintain the shape of the rim.

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