Integrated baffle anti-falling synchronous belt pulley

Abstract

The utility model discloses an integrated baffle anti-falling synchronous belt pulley which comprises a rolling cylinder and flanges located on the two sides of the rolling cylinder, and is characterized in that protruding strips are arranged on the surface of the rolling cylinder at equal intervals, a shaft cylinder is arranged on the axial inner side of each flange, the shaft cylinder and the rolling cylinder are installed in a pressing and embedding mode, and the protruding strips are arranged on the surface of the rolling cylinder. Bearings are installed on the axial outer side of the shaft barrel, a shaft rod is installed on the bearings on the two sides in a penetrating mode, and the shaft rod is connected with inner rings of the bearings. The baffle has the advantages that split type machining is facilitated during manufacturing, the flanges can be machined into different shapes according to needs, groove parts in front of and behind the protruding strips can be further machined, finally, the flanges and the rolling cylinder are spliced in a pressing and embedding mode, and the single mode that in the prior art, baffles can only be machined to be very thin can be effectively avoided. The thickness and the shape of the blocking edge can be freely adjusted according to machining requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pulley, in particular to a synchronous pulley with integrated baffle and anti-falling function. BACKGROUND

[0002] Synchronous pulley is a key component in synchronous belt transmission system. Synchronous belt is a kind of transmission belt with equidistant tooth shape, and synchronous pulley is a pulley matched with it, which has corresponding tooth groove on the circumference, and power is transmitted through the meshing of pulley tooth and synchronous belt tooth, which can ensure accurate transmission ratio and realize synchronous movement between two or more shafts. For example, the prior art with patent number CN106077561A is a synchronous pulley of casting.

[0003] The prior art is that the baffle of the pulley is riveted or welded at both ends after machining. This method has the problems of unable to bear force, easy to fall off, belt wear and other abnormalities. If abnormalities occur, long time is needed for processing and replacement, which seriously restricts the yield, affects the time and causes huge loss. Therefore, it is urgent to reform and improve a synchronous pulley that can avoid the above-mentioned abnormalities. CONTENT OF THE UTILITY MODEL

[0004] In view of the above-mentioned prior art, the utility model provides a synchronous pulley with integrated baffle and anti-falling function, and mainly solves the technical problems of increasing the load-bearing capacity of the baffle and the machining function.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model embodiment is as follows:

[0006] A synchronous pulley with integrated baffle and anti-falling function, comprising a rolling cylinder and a baffle, the baffle is located on both sides of the rolling cylinder, characterized in that the surface of the rolling cylinder is provided with equidistant protrusions, the inner side of the baffle in the axial direction is provided with a shaft cylinder, the shaft cylinder and the rolling cylinder are press-fit installed, the outer side of the shaft cylinder in the axial direction is provided with a bearing, the shaft rod is penetrated and installed through the bearings on both sides, and the shaft rod and the inner ring of the bearing are connected.

[0007] Preferably, the inner wall of the rolling cylinder is provided with a concave ring, the surface of the shaft cylinder is correspondingly provided with a convex ring, and the shaft rod and the bearing are fixedly connected.

[0008] Preferably, the upper and lower sections of the baffle are in trapezoidal structure, the inside of the protrusion is hollow, the both ends of the protrusion correspond to the shape of the baffle, and the baffle and the protrusion are provided with a buckle block at the joint, and the buckle block and the protrusion are press-fit installed.

[0009] Preferably, the buckle block and the protrusion are one of a pearl buckle or an embedded buckle, which is used to synchronize the rotation angle between the baffle and the rolling cylinder.

[0010] Preferably, the upper and lower cross sections of the retaining edge are arc-shaped structures. The retaining edge includes a left retaining edge and a right retaining edge. The left retaining edge includes a left bearing, and the right retaining edge includes a right bearing. The edge of the right bearing is provided with an extension portion facing the left retaining edge, and the end of the extension portion is provided with a fastening connector. The edge of the shaft cylinder of the left retaining edge is provided with an overlapping portion, and the overlapping portion is connected to the fastening connector.

[0011] Preferably, a gap is provided between the extension and the rolling cylinder, and the left flange and the left bearing are fixedly connected.

[0012] Preferably, both the flange and the rolling cylinder are made of hard metal material, and the outer diameter of the flange is larger than the outer diameter of the rolling cylinder.

[0013] The advantages of this utility model are: it facilitates split processing during manufacturing, the baffle can be processed into different shapes as needed, the grooves in front and behind the convex strip can also be further processed, and finally the baffle and the rolling cylinder can be pressed and spliced ​​together. This can effectively avoid the single method of processing the baffle into a very thin layer in the prior art, and the thickness and shape of the baffle can also be freely adjusted according to processing needs.

[0014] This utility model also uses the connection between the end flanges and the shaft and bearing structure to form a positioning effect on the flanges. When needed, the protrusion or bearing part can be directly processed so that the flange can be directly fastened to the side of the protrusion, or fastened to the left and right according to the extension of the bearing, so as to form a further reinforcement effect on the whole without affecting its own use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of Embodiment 1 of this application;

[0017] Figure 3 This is a cross-sectional structural diagram of Embodiment 2 of this application;

[0018] Figure 4 This is a cross-sectional structural diagram of Embodiment 3 of this application;

[0019] Explanation of icon numbers:

[0020] 1. Rolling cylinder; 2. Side flange; 201. Left side flange; 202. Right side flange; 203. Left bearing; 204. Right bearing; 205. Extension; 206. Fastener; 207. Overlap; 3. Raised strip; 4. Shaft cylinder; 5. Bearing; 6. Shaft rod; 7. Concave ring; 8. Raised ring; 9. Snap-on block. Detailed Implementation

[0021] The technical solutions of the utility model are further described in detail below in combination with the accompanying drawings and specific embodiments. Unless otherwise defined, all the technical and scientific terms used in this document have the same meanings as commonly understood by those skilled in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0022] It should be further noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "inner", "outer", "left", "right", and similar expressions used herein are for the purpose of illustration only and do not indicate the only implementation.

[0023] Embodiment 1

[0024] Please refer to the accompanying drawings Figures 1-2 The application provides an integrated baffle anti-falling synchronous pulley, comprising a rolling cylinder 1 and a baffle 2, the baffle 2 is located on both sides of the rolling cylinder 1, the surface of the rolling cylinder 1 is provided with equidistant protrusions 3, the inner side of the axial direction of the baffle 2 is provided with a shaft cylinder 4, the shaft cylinder 4 and the rolling cylinder 1 are press-fit mounted, the outer side of the axial direction of the shaft cylinder 4 is provided with a bearing 5, the shaft rod 6 is installed through the two side bearings 5, and the shaft rod 6 is connected with the inner ring of the bearing 5. Wherein the rolling cylinder 1 and the baffle 2 can be freely processed into the appropriate shape and thickness according to the needs because of the detachable connection relationship between the rolling cylinder 1 and the baffle 2, and then spliced again, and the splicing method is simple, the assembly can be completed through the press-fit mounting, finally the left and right bearings 5 are positioned and installed by using the shaft rod 6, so that the baffle 2 is positioned together with the bearing 5 structure by the shaft rod 6, so that the left and right baffles 2 are limited by the rolling cylinder 1 in the transverse direction and positioned by the shaft rod 6 in the vertical direction, and the fixed effect after splicing is realized.

[0025] Further, the inner wall of the rolling cylinder 1 is provided with a concave ring 7, and the surface of the shaft cylinder 4 is correspondingly provided with a convex ring 8. The shaft rod 6 and the bearing 5 are fixedly connected, so that the rolling cylinder 1 and the shaft cylinder 4 are limited by the embedded convex ring 8 and the concave ring 7. The diameter of the shaft cylinder 4 is slightly smaller than that of the rolling cylinder 1, so as to be put into the rolling cylinder 1. The metal material of the shaft cylinder 4 itself has a certain elasticity, such as alloy steel, aluminum alloy, etc. When put in, the convex ring 8 will generate a large friction force with the inner wall of the rolling cylinder 1, until it is embedded and fixed into the concave ring 7. The put-in shaft rod 6 can be embeddedly installed or fixed by riveting between the bearing 5.

[0026] Further, the retaining edge 2 and the rolling cylinder 1 are both made of hard metal material, and the outer diameter of the retaining edge 2 is larger than that of the rolling cylinder 1, so that the overall material has a certain elasticity, and the hardness can also guarantee the use of the conventional function. The larger outer diameter of the retaining edge 2 will not be broken even if it contacts the synchronous belt after changing the thickness and shape.

[0027] The use process of the embodiment is as follows: after the rolling cylinder 1 and the retaining edge 2 are processed, the shaft cylinder 4 can be pressed into the inside of the rolling cylinder 1 as shown in the form of Figure 2 , so that the convex ring 8 and the concave ring 7 are buckled and limited. Finally, the shaft rod 6 is installed to fix the bearing 5 left and right.

[0028] Embodiment 2

[0029] The difference from embodiment 1 is that, as shown in Figure 3 , the upper and lower sections of the retaining edge 2 are trapezoidal structures, the inner part of the convex strip 3 is hollow, the two ends of the convex strip 3 correspond to the shape of the retaining edge 2, and the retaining edge 2 and the convex strip 3 are provided with a buckle block 9 at the joint, and the buckle block 9 and the convex strip 3 are press-embeddedly installed. The trapezoidal structure of the retaining edge 2 makes the synchronous belt deviate, for example, moves to the edge of the retaining edge 2, and after continuing to rotate, the synchronous belt will slide downward along the inclined surface of the trapezoidal structure until it is reset to the surface of the rolling cylinder 1.

[0030] The buckle block 9 and the convex strip 3 are one of the bump bead buckle or the embedded buckle, which is used to synchronize the rotation angle between the retaining edge 2 and the rolling cylinder 1. The connection of the buckle block 9 and the convex strip 3 makes the retaining edge 2 be able to rotate the same angle on the rolling cylinder 1, avoiding the sliding phenomenon caused by the gap between the retaining edge 2 and the rolling cylinder 1.

[0031] The use process of the embodiment is as follows: as shown in Figure 3 , since the rolling cylinder 1 and the retaining edge 2 are detachably arranged, the inner part of the convex strip 3 can be processed to be hollow during processing. Subsequently, the installation method is the same as that of embodiment 1, and the difference is that when the retaining edge 2 is installed, the buckle block 9 inside the retaining edge 2 needs to be pressed into the convex strip 3 again, so as to complete the further fixing effect of the retaining edge 2 in the axial direction.

[0032] Embodiment 3

[0033] The difference from Examples 1 and 2 is that, as Figure 4 As shown, the upper and lower cross sections of the retaining edge 2 are arc-shaped structures. The retaining edge 2 includes a left retaining edge 201 and a right retaining edge 202. The left retaining edge 201 includes a left bearing 203, and the right retaining edge 202 includes a right bearing 204. The edge of the right bearing 204 is provided with an extension 205 facing the left retaining edge 201. The end of the extension 205 is provided with a fastener 206. The edge of the shaft cylinder 4 of the left retaining edge 201 is provided with an overlapping part 207. The overlapping part 207 and the fastener 206 are connected. The overall fixing method can also be based on the assembly structure of the rolling cylinder 1 and the retaining edge 2. After insertion, the extension 205 of the right bearing 204 and the overlapping part 207 of the left retaining edge 201 are connected, so that the left retaining edge 201 and the right retaining edge 202 at both ends will also generate tension to prevent loosening.

[0034] A gap is provided between the extension 205 and the rolling cylinder 1. The left flange 201 and the left bearing 203 are fixedly connected. The gap can form a buffer between multiple components when the rolling cylinder 1 is in operation for a long time or when thermal expansion and contraction occurs due to other reasons. This allows the thermal expansion area to be concentrated at the gap, preventing the phenomenon of the protrusion 8 being squeezed inward.

[0035] The usage process of this embodiment is as follows: Figure 4 As shown, when installing bearing 5, first install the right bearing 204 on the right side, let the cylindrical extension 205 connect to the overlapping part 207 of the left flange 201 to the left, and then install the left bearing 203 on the left side. This will create a tensile force between the left flange 201 and the right flange 202, and fix the position of the convex ring 8 axially.

[0036] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. An integral type synchronous pulley with a flange preventing falling, comprising a rolling cylinder (1) and a flange (2) located on both sides of the rolling cylinder (1), characterized in that, The rolling cylinder (1) is provided with equidistant convex strips (3), the axial inner side of the baffle (2) is provided with a shaft cylinder (4), the shaft cylinder (4) and the rolling cylinder (1) are press-fit mounted, the axial outer side of the shaft cylinder (4) is provided with a bearing (5), the two bearings (5) are penetrated and mounted with a shaft rod (6), and the shaft rod (6) and the inner ring of the bearing (5) are connected.

2. The one-piece guard anti-drop synchronous pulley according to claim 1, characterized in that, The inner wall of the rolling cylinder (1) is provided with a concave ring (7), the surface of the shaft cylinder (4) is correspondingly provided with a convex ring (8), and the shaft rod (6) and the bearing (5) are fixedly connected.

3. The one-piece guard anti-drop synchronous pulley according to claim 2, characterized in that, The upper and lower sections of the baffle (2) are trapezoidal structures, the inside of the convex strip (3) is hollow, the two ends of the convex strip (3) correspond to the shape of the baffle (2), and the baffle (2) and the convex strip (3) are provided with buckle blocks (9) at the joint, and the buckle blocks (9) and the convex strip (3) are press-fit mounted.

4. The one-piece guard anti-drop synchronous pulley according to claim 3, characterized in that, The buckle block (9) and the convex strip (3) are one of a pearl buckle or an embedded buckle, which is used for synchronizing the rotation angle between the baffle (2) and the rolling cylinder (1).

5. The one-piece guard anti-drop synchronous pulley as recited in claim 1, wherein, The upper and lower sections of the baffle (2) are arc structures, the baffle (2) includes a left baffle (201) and a right baffle (202), the left baffle (201) includes a left bearing (203), the right baffle (202) includes a right bearing (204), the edge of the right bearing (204) is provided with an extension (205) towards the left baffle (201), the end of the extension (205) is provided with a buckle joint (206), the edge of the shaft cylinder (4) of the left baffle (201) is provided with a lap joint (207), and the lap joint (207) and the buckle joint (206) are connected.

6. The one-piece guard anti-drop synchronous pulley according to claim 5, characterized in that, The extension (205) and the rolling cylinder (1) are provided with a gap, and the left baffle (201) and the left bearing (203) are fixedly connected.

7. The one-piece guard-retaining synchronous pulley as set forth in any of claims 1-6, wherein, The baffle (2) and the rolling cylinder (1) are both made of hard metal material, and the outer diameter of the baffle (2) is larger than that of the rolling cylinder (1).

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