Bicycle rim correcting machine

Abstract

The utility model discloses a bicycle rim corrector which comprises a support, a clamping mechanism and a correcting mechanism, the clamping mechanism and the correcting mechanism are arranged on the support, the clamping mechanism comprises a clamping block, an adapter shaft and a clamping shaft which are sequentially connected, one end of the clamping block is provided with a shaft hole connecting portion, and the other end of the clamping block is provided with a bearing connecting portion. A bearing is embedded in the inner side of one end of the adapter shaft, the other end of the adapter shaft is detachably connected with a clamping shaft, the shaft hole connecting part is matched with a rim shaft hole and can be inserted into the rim shaft hole, the bearing connecting part is matched with a bearing inner ring in an inserted mode, the correction mechanism comprises a correction block, the correction block is arranged on the edge of a rim, and the correction block is matched with the rim shaft hole. The device is used for detecting the flatness of the rim edge. According to the clamping structure of the correcting machine, the clamping block and the adapter shaft are used for replacing an original clamping structure, rotation is smooth in the wheel correcting process, friction caused by relative sliding between a rim shaft hole and the correcting machine is avoided, the product structure is protected, and the correcting precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle wheel manufacturing technology, and in particular to a bicycle rim straightening machine. Background Technology

[0002] After the bicycle rim spokes are assembled, uneven spoke tension can cause the wheel to become unbalanced and skewed. A spoke straightening machine is needed to correct the spoke tension and maintain the wheel's roundness and balance. A bicycle rim clamping and straightening machine is a mechanical tool used to correct the runout, roundness, and symmetry of a bicycle rim. It achieves precise restoration of the rim's geometry by manually adjusting the spoke tension. Through the combined action of mechanical clamping, manual adjustment, and measurement feedback, the bicycle rim straightening machine achieves precise control of the rim's geometric parameters and is the core tool of traditional rim straightening technology.

[0003] Its working principle is as follows: the wheel is placed on the clamping mechanism of the straightening machine, the wheel is rotated, the flatness of the wheel edge is checked by the straightening block, and the tension of the spokes is adjusted to keep the wheel round and balanced.

[0004] However, existing straightening machines use a clamping rotating structure to straighten the wheel spoke tension by clamping a rotating shaft. The front of the rotating shaft is conical, and when inserted into the wheel's central axle hole, it is prone to jamming, leading to reduced straightening quality. Furthermore, the straightening shaft makes direct rotating contact with the product, damaging the product surface and causing a decline in product quality. Utility Model Content

[0005] The purpose of this invention is to provide a bicycle rim straightening machine to address the shortcomings of existing technologies.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A bicycle rim straightening machine, characterized in that it includes a bracket, and a clamping mechanism and a straightening mechanism disposed on the bracket. The clamping mechanism includes a locking block, an adapter shaft, and a clamping shaft connected in sequence. One end of the locking block is provided with a shaft hole connection part, and the other end is provided with a bearing connection part. One end of the adapter shaft has a bearing embedded in its inner side, and the other end is detachably connected to the clamping shaft. The shaft hole connection part cooperates with the rim shaft hole and can be inserted into the rim shaft hole. The bearing connection part is inserted into the inner ring of the bearing. The straightening mechanism includes a straightening block disposed on the edge of the rim for detecting the flatness of the rim edge.

[0008] Furthermore, the outer surface of one end of the clamping shaft is provided with several grooves, and one end of the adapter shaft is provided with a connecting hole. The inner wall of the connecting hole is provided with several protrusions that cooperate with the grooves. The clamping shaft and the adapter shaft are connected to each other through the cooperation of the grooves and protrusions.

[0009] Furthermore, the protrusion is movably connected to the inner wall of the connecting hole and can move radially along the adapter shaft. A button is provided on the outer surface of the adapter shaft and connected to the protrusion. Pressing the button can control the movement of the protrusion.

[0010] Furthermore, the protrusions are evenly arranged circumferentially along the inner wall of the connecting hole.

[0011] Furthermore, the clamping shaft is connected to the bracket via a support platform, and the clamping shaft is threadedly connected to the support platform. One end of the clamping shaft is provided with a rotating wheel, and when the rotating wheel is rotated, the clamping shaft moves back and forth along the axial direction.

[0012] Furthermore, the cross-section of the shaft hole connection is arc-shaped.

[0013] Furthermore, the bracket includes a base and a first support rod, the lower end of the first support rod being connected to the base and the upper end being connected to the support platform.

[0014] Furthermore, the bracket also includes a second support rod with a strip-shaped hole. The lower ends of both the first and second support rods are hinged to the base, and a connecting bolt passes through the strip-shaped hole and connects to the first support rod.

[0015] Furthermore, the correction block is connected to the first support rod via a third support rod.

[0016] Furthermore, a rim placement rack is provided next to the bracket for placing the rim to be tested.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The clamping structure of the straightening machine uses a clamping block and an adapter shaft to replace the original clamping structure. During the wheel straightening process, the rotation is smooth, and there is no longer friction caused by relative sliding between the wheel rim shaft hole and the straightening machine, which protects the product structure and improves the straightening accuracy.

[0019] 2. The adapter shaft and the clamping shaft are connected by movable protrusions and grooves. The adapter shaft can be easily installed and replaced by operating the button.

[0020] 3. The first and second support rods of the bracket are connected by bolts. By moving the bolts in the slotted holes, the distance between the wheel rim and the straightening block is changed, enabling the straightening machine to be used to inspect wheel rims of different specifications, thus improving the applicability of the straightening machine.

[0021] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 Schematic diagram of the bracket and clamping mechanism;

[0024] Figure 3 This is a schematic diagram of the card block structure;

[0025] Figure 4 Schematic diagram of the adapter shaft structure Figure 1 ;

[0026] Figure 5 Schematic diagram of the adapter shaft structure Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the clamping shaft structure;

[0028] In the diagram: 1-Bracket, 2-Clamping block, 3-Adapter shaft, 4-Clamping shaft, 5-Rim, 6-Correction block, 7-Support platform, 8-Rotating wheel, 9-Rim placement bracket, 11-Base, 12-First support rod, 13-Second support rod, 14-Strip hole, 15-Connecting bolt, 16-Third support rod, 21-Shaft hole connection, 22-Bearing connection, 31-Bearing, 32-Connecting hole, 33-Protrusion, 34-Button, 41-Groove, 51-Rim shaft hole. Detailed Implementation

[0029] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figures 1-6 As shown, a specific embodiment of a bicycle rim straightening machine includes a bracket 1, and a clamping mechanism and a straightening mechanism disposed on the bracket 1. The clamping mechanism includes a locking block 2, an adapter shaft 3, and a clamping shaft 4 connected in sequence. Figure 3 One end of the locking block 2 is provided with a shaft hole connecting part 21, and the other end is provided with a bearing connecting part 22. For example... Figure 4 , 5 One end of the adapter shaft 3 has a bearing 31 embedded inside, and the other end is detachably connected to the clamping shaft 4. The shaft hole connection part 21 mates with the rim shaft hole 51 and can be inserted into the rim shaft hole 51. The bearing connection part 22 is inserted into the inner ring of the bearing 31. The calibration mechanism includes a calibration block 6, which is set on the edge of the rim 5 and is used to detect the flatness of the edge of the rim 5.

[0034] Preferred, such as Figure 5 , 6 As shown, the outer surface of one end of the clamping shaft 4 is provided with several grooves 41, and one end of the adapter shaft 3 is provided with a connecting hole 32. The inner wall of the connecting hole 32 is provided with several protrusions 33 that movably connect with the grooves 41. The protrusions 33 are evenly arranged circumferentially along the inner wall of the connecting hole 32. The clamping shaft 4 and the adapter shaft 3 are connected to each other through the engagement of the grooves 41 and the protrusions 33. The protrusions 33 can move radially along the adapter shaft 3. A button 34 is provided on the outer surface of the adapter shaft 3 and connected to the protrusions 33. Pressing the button 34 controls the movement of the protrusions 33.

[0035] Preferred, such as Figure 2The clamping shaft 4 is connected to the bracket 1 via the support platform 7. The clamping shaft 4 is threadedly connected to the support platform 7. One end of the clamping shaft 4 is provided with a rotating wheel 8. When the rotating wheel 8 is rotated, the clamping shaft 4 moves back and forth along the axial direction.

[0036] Preferably, the cross-section of the shaft hole connection portion 21 is arc-shaped.

[0037] Preferred, such as Figure 1 The bracket 1 includes a base 11, a first support rod 12, and a second support rod 13. The second support rod 13 has a slotted hole 14. The lower ends of both the first support rod 12 and the second support rod 13 are hinged to the base 11. The upper end of the first support rod 12 is connected to a support platform 7, and a connecting bolt 15 passes through the slotted hole 14 and connects to the first support rod 12. The correction block 6 is connected to the first support rod 12 via a third support rod 16.

[0038] Preferably, a rim placement rack 9 is provided next to the bracket 1 for placing the rim 5 to be tested.

[0039] The working principle of the above embodiments is as follows:

[0040] Insert the front end of the clamping shaft 4 into the connecting hole 32 of the adapter shaft 3. The protrusion 33 on the inner wall of the connecting hole 32 is inserted into the groove 41 at the front end of the clamping shaft 4, thus connecting the adapter shaft 3 and the clamping shaft 4. The bearing connecting part 22 at one end of the clamping block 2 is inserted into the bearing 31 of the adapter shaft 3, and the shaft hole connecting part 21 at the other end of the clamping block 2 is inserted into the rim shaft hole 51 at the center of the rim 5 to be tested. Rotate the rotating wheel 8 so that the clamping shaft 4 drives the clamping block 2 on the other side to gradually approach the rim 5 and insert it into the rim shaft hole 51 on the other side in the same way, so that the rim 5 is fixed on the clamping mechanism.

[0041] Adjust the position of the correction block 6 so that it is close to the edge of the rim 5, and rotate the rim 5 for correction. Due to the setting of the bearing 31, the clamping structure of the correction machine uses the clamping block 2 and the adapter shaft 3 to replace the original clamping structure. During the wheel correction process, the rotation is smooth, and there is no longer friction caused by relative sliding between the rim shaft hole and the correction machine, which protects the product structure and improves the correction accuracy.

[0042] Pressing button 34 on adapter shaft 3 will cause the protrusion 33 on adapter shaft 3 to retract radially and separate from the groove 41 on clamping shaft 4. The adapter shaft 3 can be easily installed and replaced by operating button 34.

[0043] Adjusting the position of the connecting bolt 15 in the strip hole 14 can change the height of the first support rod 12 and the second support rod 13, thereby changing the height of the clamping mechanism to accommodate rims 5 of different sizes and improve the adaptability of the straightening machine.

[0044] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A bicycle wheel truing machine characterized by: The utility model provides a kind of wheel rim calibrating device, including support (1), and the clamping mechanism, correction mechanism arranged on support (1), the clamping mechanism includes the clamping mechanism in turn connected block (2), adapter shaft (3), clamping shaft (4), one end of the block (2) is provided with shaft hole connecting portion (21), the other end is provided with bearing connecting portion (22), one end inside adapter shaft (3) is embedded bearing (31), the other end detachably connects clamping shaft (4), the shaft hole connecting portion (21) is matched with rim shaft hole (51), it can be inserted in the rim shaft hole (51), bearing connecting portion (22) is inserted with the inner ring of bearing (31) cooperation, the correction mechanism includes correction block (6), the correction block (6) is arranged at the edge of rim (5), for detecting the flatness of rim (5) edge.

2. A bicycle wheel truing machine as defined in claim 1, wherein: The outer surface of one end of the clamping shaft (4) is provided with a plurality of grooves (41), one end of the adapter shaft (3) is provided with a connecting hole (32), and a plurality of protrusions (33) matched with the grooves (41) are arranged on the inner wall of the connecting hole (32). The clamping shaft (4) and the adapter shaft (3) are connected to each other through the cooperation of the grooves (41) and the protrusions (33).

3. A bicycle wheel truing stand as defined in claim 2 wherein: The protrusions (33) are movably connected to the inner wall of the connecting hole (32) and can move along the radial direction of the adapter shaft (3). A button (34) is arranged on the outer surface of the adapter shaft (3) and connected to the protrusions (33). The movement of the protrusions (33) can be controlled by pressing the button (34).

4. A bicycle wheel truing stand as defined in claim 3 wherein: The protrusions (33) are uniformly arranged along the circumference of the inner wall of the connecting hole (32).

5. The bicycle rim straightening machine of claim 1, wherein: The clamping shaft (4) is connected to the support (1) through a support table (7). The clamping shaft (4) is threadedly connected to the support table (7). One end of the clamping shaft (4) is provided with a rotating wheel (8). When the rotating wheel (8) is rotated, the clamping shaft (4) moves forward and backward along the axial direction.

6. The bicycle rim straightening machine of claim 1, wherein: The cross section of the shaft hole connecting portion (21) is arc-shaped.

7. A bicycle wheel truing stand as defined in claim 5 wherein: The support (1) includes a base (11) and a first support rod (12). The lower end of the first support rod (12) is connected to the base (11), and the upper end of the first support rod (12) is connected to the support table (7).

8. A bicycle wheel truing stand as defined in claim 7, wherein: The support (1) further includes a second support rod (13). A strip-shaped hole (14) is formed in the second support rod (13). The lower ends of the first support rod (12) and the second support rod (13) are hingedly connected to the base (11). A connecting bolt (15) passes through the strip-shaped hole (14) and is connected to the first support rod (12).

9. The bicycle wheel truing machine of claim 7 wherein: The correction block (6) is connected to the first support rod (12) through a third support rod (16).

10. The bicycle rim straightening machine of claim 1, wherein: A rim placing rack (9) is arranged beside the support (1) for placing the to-be-tested rim (5).

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