A hub-tensioned fastening device

Abstract

The utility model provides a kind of hub tension type fastening device, comprising: a bottom plate;Positioning seat, the positioning seat is fixed in the middle region of bottom plate, the positioning seat includes a seat plate, a positioning column is fixed on the seat plate, the positioning column side is equipped with a positioning pin, a guide hole is opened in the seat plate, the guide hole passes through the positioning column;Positioning shaft, the positioning shaft is movably connected in the guide hole, the positioning shaft one end has a clamping joint, the other end of the positioning shaft has a threaded section, a threaded sleeve is threadedly connected on the threaded section and a rotating cylinder is fixed, a rotating handle is fixed on the rotating cylinder;Clamping disc, when positioning hub, the clamping disc is clamped between hub and clamping joint.The fastening device is compact in structure, compared with three-jaw chuck, volume is greatly reduced, its cost is also low, maintenance is more simple, and the tensioning and fastening of hub can be realized quickly, facilitate subsequent boring operation to hub.

Description

Technical Field

[0001] This utility model relates to the field of wheel hubs, and in particular to a wheel hub tensioning fastening device. Background Technology

[0002] Currently, the four buffer sleeve holes at the front of the motorcycle wheel hub need to be precision machined by boring. During the precision machining, the wheel hub needs to be tightened first. However, the structure of the wheel hub is relatively complex. If a conventional three-jaw chuck is used for clamping, the required three-jaw chuck is relatively large. At the same time, since the bottom of the wheel hub has a thin-shell ring structure, it is easy to cause clamping damage to the wheel hub. Therefore, a device that can quickly tighten the wheel hub is needed to facilitate the processing of the wheel hub. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a wheel hub tensioning fastening device, which can quickly tighten and fasten the wheel hub, facilitating the subsequent boring operation of the buffer sleeve on the wheel hub.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hub tensioning fastening device, comprising:

[0005] One base plate;

[0006] A positioning seat is fixed in the middle area of ​​the base plate. The positioning seat includes a base plate, on which a positioning post is fixed. A positioning pin is provided on the side of the positioning post. A guide hole is opened in the base plate, and the guide hole passes through the positioning post.

[0007] A positioning shaft is movably connected in the guide hole. One end of the positioning shaft has a snap-fit ​​connector, and the other end of the positioning shaft has a threaded section. A threaded sleeve and a rotating cylinder are threadedly connected to the threaded section, and a rotating handle is fixed on the rotating cylinder.

[0008] A locking plate is used to lock between the wheel hub and the locking connector when positioning the wheel hub.

[0009] Furthermore, the snap-fit ​​connector is threaded onto one end of the positioning shaft.

[0010] Furthermore, a limiting cylinder is fixed to the right side of the guide hole on the seat plate, the limiting cylinder has a notch, and the rotating cylinder has a protrusion that fits into the notch.

[0011] Furthermore, the card holder is a disc, and a card slot passing through the center of the disc is formed on the card holder.

[0012] Furthermore, a connecting plate is fixed on the positioning seat, the connecting column is fixed in the central area of ​​the connecting plate, and a fixing ring is provided on the outer side of the connecting plate, which is fixedly connected to the positioning seat by the fixing ring and screws.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The fastening device has a compact structure, which significantly reduces the size compared to a three-jaw chuck. It is also cheaper, easier to maintain, and can quickly tighten and secure the wheel hub, making it easier to drill holes in the wheel hub later.

[0015] 2. The wheel hub is fastened between the clamping plate and the clamping joint. The clamping force is applied to the end face area of ​​the buffer sleeve of the wheel hub, rather than directly to the side of the thin-shell ring structure at the bottom of the wheel hub, which effectively avoids deformation or damage to the thin-shell structure caused by uneven force.

[0016] 3. The positioning pin allows it to engage with the reinforcing ribs in the wheel hub, facilitating quick positioning of the wheel hub in the circumferential direction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram from another direction of the present invention;

[0020] Figure 3 This is a structural diagram of the present invention when the wheel hub is not positioned.

[0021] Figure 4 This is a structural diagram of the wheel hub of this utility model;

[0022] In the diagram: 1. Base plate; 2. Positioning seat; 3. Seat plate; 4. Connecting column; 5. Positioning pin; 6. Guide hole; 7. Snap-fit ​​connector; 8. Threaded section; 9. Threaded sleeve; 10. Rotating cylinder; 11. Rotating handle; 12. Snap-fit ​​plate; 13. Limiting cylinder; 14. Notch; 15. Protrusion; 16. Snap-fit ​​groove; 17. Connecting plate; 18. Retaining ring; 19. Screw; 20. Reinforcing rib; 21. Through hole; 22. Protrusion; Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] like Figures 1 to 4 The hub tensioning fastening device shown includes:

[0025] A base plate 1, which can be installed in a boring machine tool;

[0026] A positioning seat 2 is fixed in the middle area of ​​the base plate 1. The positioning seat 2 includes a base plate 3, on which a positioning post 4 is fixed. A positioning pin 5 is provided on the side of the positioning post 4. A guide hole 6 is opened in the base plate 3, and the guide hole 6 passes through the positioning post 4.

[0027] A positioning shaft is movably connected in the guide hole 6, the diameter of which matches the positioning shaft. One end of the positioning shaft has a snap-fit ​​connector 7, and the other end has a threaded section 8. A threaded sleeve 9 is threadedly connected to the threaded section 8, and a rotating cylinder 10 is fixed thereon. A rotating handle 11 is fixed on the rotating cylinder 10.

[0028] A locking plate 12 is used to lock the wheel hub between the wheel hub and the locking connector 7 during wheel hub positioning.

[0029] The process of using this utility model is as follows: First, the base plate 1 is installed on the boring machine. When positioning the hub, the through hole in the center of the hub is first engaged with the positioning pin 4 to achieve vertical positioning. Then, the hub is rotated until it can no longer rotate, so that the positioning pin 5 abuts against the reinforcing rib of the hub to achieve circumferential positioning. At this time, the positioning shaft is pushed out to the left, so that the positioning shaft and the clamping head 7 on it pass through the through hole of the hub, and the clamping head 7 on it passes out from the through hole of the hub. After the positioning shaft passes out, the clamping plate 12 is engaged between the positioning shaft, the clamping head 7 and the hub. Then, it is rotated clockwise. The threaded sleeve 9 is moved towards the positioning seat 2 until it abuts against the positioning seat 2. Then, the threaded sleeve 9 is fixed (the operator can use one hand to fix the threaded sleeve 9 in the circumferential direction). The positioning shaft is rotated counterclockwise by the rotating handle 11 on the rotating cylinder 10, so that the positioning shaft rotates relative to the threaded sleeve 9, causing the end of the snap-fit ​​connector 7 to gradually approach the snap-fit ​​plate 12 and press the snap-fit ​​plate 12. The snap-fit ​​plate 12 then transmits the pressing force to the end face of the buffer sleeve of the hub, thereby pressing the hub. After the hub is pressed, the boring operation can be performed to bore the four holes of the buffer sleeve.

[0030] Furthermore, the snap-fit ​​connector 7 is threadedly connected to one end of the positioning shaft. Specifically, the snap-fit ​​connector 7 of this invention is threadedly connected to one end of the positioning shaft, thus enabling the snap-fit ​​connector 7 to be disassembled and connected, facilitating the smooth passage of the positioning shaft through the guide hole before connecting the snap-fit ​​connector.

[0031] Furthermore, a limiting cylinder 13 is fixed to the right side of the guide hole 6 on the seat plate 3. The limiting cylinder 13 has a notch 14, and the rotating cylinder 10 has a protrusion 15 that fits into the notch 14. Specifically, this utility model has a limiting hole fixed to the right side of the guide cylinder. Through the notch 14 on the limiting cylinder 13, it can fit into the protrusion 15 on the threaded sleeve 9. Before positioning the hub, the positioning shaft can be pushed first to fit the threaded sleeve 9 into the limiting cylinder 13. After the fit is completed, the positioning shaft can be moved by rotating the rotating handle 11 on the rotating cylinder 10 counterclockwise, thereby pressing the hub.

[0032] Furthermore, the retaining plate 12 is a disc, and a retaining groove 16 passing through the center of the disc is formed on the retaining plate 12. Specifically, the retaining plate 12 of this utility model is a disc, and the disc is provided with a retaining groove 16. The retaining plate 12 can be directly connected to the positioning shaft through the retaining groove 16.

[0033] Furthermore, a connecting plate 17 is fixed on the positioning seat 2. The connecting post 4 is fixed in the central area of ​​the connecting plate 17, and a fixing ring 18 is provided on the outer side of the connecting plate 17. The connecting plate 17 is fixedly connected to the positioning seat 2 by the fixing ring 18 and screws 19. Specifically, the connecting plate 17 of this invention is fixedly connected to the positioning seat 2 by the fixing ring 18 and screws 19. Therefore, the connecting plate 17 can be replaced according to the different wheel hubs (different through hole inner diameters) to be processed, making the applicability of this invention wider.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hub tensioning fastening device, characterized in that, include: One base plate; A positioning seat is fixed in the middle area of ​​the base plate. The positioning seat includes a base plate, on which a positioning post is fixed. A positioning pin is provided on the side of the positioning post. A guide hole is opened in the base plate, and the guide hole passes through the positioning post. A positioning shaft is movably connected in the guide hole. One end of the positioning shaft has a snap-fit ​​connector, and the other end of the positioning shaft has a threaded section. A threaded sleeve and a rotating cylinder are threadedly connected to the threaded section, and a rotating handle is fixed on the rotating cylinder. A locking plate is used to lock the wheel hub between the wheel hub and the locking connector during wheel hub positioning.

2. The hub tensioning fastening device as described in claim 1, characterized in that, The snap-fit ​​connector is threaded onto one end of the positioning shaft.

3. The hub tensioning fastening device as described in claim 2, characterized in that, The base plate has a limiting cylinder fixed on the right side of the guide hole. The limiting cylinder has a notch, and the rotating cylinder has a protrusion that fits into the notch.

4. The hub tensioning fastening device as described in claim 3, characterized in that, The card holder is a disc, and a card slot passing through the center of the disc is formed on the card holder.

5. The hub tensioning fastening device as described in claim 4, characterized in that, A connecting plate is also fixed on the positioning seat. The connecting column is fixed in the central area of ​​the connecting plate. The connecting plate has a fixing ring on its outer side and is fixedly connected to the positioning seat by the fixing ring and screws.

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