A clamping device for heavy load railway locomotive hoop wheel cast steel wheel core

Abstract

This utility model discloses a clamping device for cast steel wheel cores of heavy-duty railway locomotives with rims, comprising a first clamping mechanism and a second clamping mechanism. The first clamping mechanism includes a first chuck with multiple first clamping jaws mounted on it via first bolts and a first support reference block. The second clamping mechanism includes a second chuck with multiple second clamping jaws mounted on it via second bolts and a second support reference block on its top surface. This utility model's clamping device for cast steel wheel cores of heavy-duty railway locomotives with rims, through its first and second clamping mechanisms, reduces the number of reverse rotations of the main and auxiliary wheel cores. Furthermore, the machining positioning references are the outer circumferential surface and inner hole of the machined wheel rim, resulting in high concentricity and machining accuracy of the workpiece after machining. The first and second clamping mechanisms also have adjustment functions to meet the machining requirements of wheel cores for different vehicle models, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the technical field of wheel center clamping equipment, and in particular to a clamping device for cast steel wheel centers of heavy-duty railway locomotives with hoops. Background Technology

[0002] Currently, the machining method for wheel centers involves clamping the outer circumference of the rim while machining the inner holes of the main and auxiliary wheel centers; clamping the outer circumference of the main wheel center while pressing the outer diameter of the driven gear after it is installed, and fixing the auxiliary wheel center to a special fixture through the spoke holes while machining the outer circumference of the auxiliary wheel center. The entire process involves four rotations of the main wheel center and two rotations of the auxiliary wheel center. Frequent changes in the machining datum lead to a large concentricity between the outer circumference and the inner hole, resulting in low machining accuracy. Furthermore, the excessive number of rotations during machining is cumbersome. Compared to manufacturing new wheel centers, overhauling wheel centers presents challenges such as rim deformation, poor machining datum accuracy, and a large range of clamping diameters. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a clamping device for cast steel wheel cores of heavy-duty railway locomotives with hoops.

[0004] This utility model provides a clamping device for cast steel wheel cores of heavy-duty railway locomotives with hoops, including a first clamping mechanism and a second clamping mechanism, which are respectively installed and fixed on their respective machine tools.

[0005] The first clamping mechanism includes a first chuck, on which a plurality of first clamping jaws are provided by first bolts for clamping the inner holes of the main wheel center and the auxiliary wheel center when machining the outer circumferential surface of the rim of the main wheel center and the auxiliary wheel center; the first chuck is provided with a first support reference block for supporting the outer end face of the rim of the main wheel center and the auxiliary wheel center when machining the outer circumferential surface of the rim of the main wheel center and the auxiliary wheel center.

[0006] The second clamping mechanism includes a second chuck, on which a plurality of second clamping jaws are provided by second bolts for clamping the outer circumferential surfaces of the rims of the main wheel center and the auxiliary wheel center; a second support reference block is provided on the top surface of the second chuck for supporting the inner end face of the main wheel center when machining the inner hole of the main wheel center, the outer end face of the hub, and the outer end face of the rim, and for supporting the inner end face of the auxiliary wheel center when machining the inner hole of the auxiliary wheel center, the outer end face of the hub, and the outer end face of the rim.

[0007] Furthermore, three sets of first bolt hole assemblies are evenly spaced along the circumference of the top surface of the first chuck. Each set of first bolt hole assemblies includes multiple first bolt holes, and the first bolt holes in each set of first bolt hole assemblies are evenly spaced along the length direction of the radius of the first chuck.

[0008] Furthermore, the first clamping claw is provided in three sets corresponding to the first bolt hole assembly. Each set of the first clamping claw includes a transverse fixing seat. A limit clamping block is fixedly provided on one end of the top surface of the transverse fixing seat near the center of the first chuck. The transverse fixing seat is provided with at least two first countersunk through holes corresponding to the first bolt holes. The first bolt passes through the corresponding first countersunk through hole and is screwed into the interior of the corresponding first bolt hole to fix the corresponding first clamping claw on the first chuck.

[0009] Furthermore, at least one of the first support reference blocks is fixedly disposed on the top surface of the first chuck to ensure the machining reference and accuracy of the main wheel center and the auxiliary wheel center.

[0010] Furthermore, three sets of second bolt hole assemblies are fixedly arranged at uniform intervals along the circumference on the top surface of the second chuck. Each set of second bolt hole assemblies includes multiple second bolt holes, and the second bolt holes in each set of second bolt hole assemblies are evenly spaced along the length direction of the radius of the second chuck.

[0011] Furthermore, the second clamping claw is provided in three sets corresponding to the second bolt hole assembly, and each set of the second clamping claw includes a wedge-shaped claw; the wedge-shaped claw is provided with at least two second countersunk through holes corresponding to the second bolt holes, and the second bolt passes through the corresponding second countersunk through holes and is screwed into the interior of the corresponding second bolt hole, for fixing the corresponding second clamping claw on the second chuck.

[0012] Furthermore, the side of the wedge-shaped chuck closest to the center of the second chuck is configured as an arc-shaped surface to fit the outer circumferential surfaces of the main wheel center and the auxiliary wheel center.

[0013] Furthermore, three second support reference blocks are fixedly disposed on the top surface of the second chuck. The three second support reference blocks are L-shaped and are evenly distributed between the three second clamping jaws to ensure the machining reference and accuracy of the main wheel center and the auxiliary wheel center.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model relates to a clamping device for cast steel wheel cores of heavy-duty railway locomotives with rims. Through the first clamping mechanism and the second clamping mechanism, the main wheel core and the auxiliary wheel core can be reversed twice each to complete the processing of the main wheel core and the auxiliary wheel core. The processing positioning reference is the outer circumferential surface and inner hole of the processed wheel rim. The processed workpiece has high concentricity, high processing accuracy, fewer reversals, and high processing efficiency.

[0016] In addition, the first clamping mechanism and the second clamping mechanism have adjustment functions through their respective first bolts and second bolts, which can meet the processing of wheel centers of different models and are highly practical.

[0017] It should be understood that the content described in the utility model description section is not intended to limit the key or important features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model.

[0018] Other features of this invention will become readily apparent from the following description. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 A schematic diagram of the structure after the main wheel and the first clamping mechanism are assembled;

[0021] Figure 2 This is a schematic diagram of the structure after the auxiliary wheel hub and the first clamping mechanism are assembled.

[0022] Figure 3 A schematic diagram of the structure after the main wheel and the second clamping mechanism are assembled;

[0023] Figure 4 This is a schematic diagram of the structure after the auxiliary wheel hub and the second clamping mechanism are assembled.

[0024] Figure 5 This is a top view of the structure of the first clamping mechanism;

[0025] Figure 6 This is a top view of the second clamping mechanism.

[0026] The following are the labels in the diagram: 1. First clamping mechanism; 11. First chuck; 12. First clamping jaw; 121. Lateral fixing seat; 122. Limiting clamping block; 13. First bolt hole; 14. First countersunk through hole; 15. First support reference block; 16. First bolt;

[0027] 2. Second clamping mechanism; 21. Second chuck; 22. Second clamping jaw; 23. Second bolt; 24. Second support reference block; 25. Second bolt hole; 26. Second countersunk through hole;

[0028] 3. Main wheel hub; 4. Secondary wheel hub; 5. Gear. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Please refer to Figures 1-6 The present invention provides a clamping device for cast steel wheel cores of heavy-duty railway locomotives with hoops, including a first clamping mechanism 1 and a second clamping mechanism 2. The first clamping mechanism 1 and the second clamping mechanism 2 are respectively installed and fixed on their respective machine tools, that is, the first clamping mechanism 1 is installed on one machine tool and the second clamping mechanism 2 is installed on another machine tool. The main wheel core 3 and the auxiliary wheel core 4 are processed by the cooperation between the first clamping mechanism 1 and the second clamping mechanism 2 on the two machine tools.

[0032] The first clamping mechanism 1 includes a first chuck 11, which is fixedly mounted on a machine tool. Multiple first clamping claws 12 are provided on the top surface of the first chuck 11 by first bolts 16, which are used to clamp the inner holes of the main wheel core 3 and the auxiliary wheel core 4 when machining the outer circumferential surface of the rim of the main wheel core 3 and the auxiliary wheel core 4.

[0033] In a preferred embodiment, three sets of first bolt hole assemblies are evenly spaced along the circumference of the top surface of the first chuck 11. Each set of first bolt hole assemblies includes a plurality of first bolt holes 13, and the first bolt holes 13 in each set of first bolt hole assemblies are evenly spaced along the length direction of the radius of the first chuck 11.

[0034] In a preferred embodiment, three sets of first clamping claws 12 are provided corresponding to the first bolt hole assembly. Each set of first clamping claws 12 includes a strip-shaped transverse fixing seat 121. A limiting clamping block 122 is fixedly provided at one end of the top surface of the transverse fixing seat 121 near the center of the first chuck 11. The limiting clamping block 122 is used to clamp the inner holes of the main wheel center 3 and the auxiliary wheel center 4. At least two first countersunk through holes 14 are provided on the transverse fixing seat 121 corresponding to the first bolt hole 13. The first bolt 13 passes through the corresponding first countersunk through hole 14 and is screwed into the interior of the corresponding first bolt hole 13 to fix the corresponding first clamping claw 12 on the first chuck 11.

[0035] The first bolt holes 13 are evenly spaced along the length of the radius of the first chuck 11. They cooperate with the first bolt 16 and the first countersunk through hole 14 on the transverse fixing seat 121 to adjust the position of the transverse fixing seat 121 and the limiting clamping block 122 on the top surface of the first chuck 11, thereby enabling the processing of wheel centers of different models and improving their versatility.

[0036] The first chuck 11 is provided with a first support reference block 15, which is used to support the outer end face of the rim of the main wheel center 3 and the auxiliary wheel center 4 when machining the outer circumferential surface of the rim.

[0037] In a preferred embodiment, at least one first support reference block 15 is fixedly disposed on the top surface of the first chuck 11 to ensure the machining reference and accuracy of the main wheel core 3 and the auxiliary wheel core 4.

[0038] The second clamping mechanism 2 includes a second chuck 21, which is mounted and fixed on another machine tool. Multiple second clamping jaws 22 are provided on the second chuck 21 by second bolts 23 for clamping the outer circumferential surfaces of the rims of the main wheel hub 3 and the auxiliary wheel hub 4. A second support reference block 24 is provided on the top surface of the second chuck 21 for supporting the inner end face of the main wheel hub 3 when machining the inner hole, outer end face of the hub, and outer end face of the rim, and for supporting the inner end face of the auxiliary wheel hub 4 when machining the inner hole, outer end face of the hub, and outer end face of the rim.

[0039] In a preferred embodiment, three sets of second bolt hole assemblies are fixedly arranged at uniform intervals along the circumference on the top surface of the second chuck 21. Each set of second bolt hole assemblies includes multiple second bolt holes 25, and the second bolt holes 25 in each set of second bolt hole assemblies are evenly spaced along the length direction of the radius of the second chuck 21.

[0040] In a preferred embodiment, three sets of second clamping claws 22 are provided corresponding to the second bolt hole assembly. Each set of second clamping claws 22 includes a wedge-shaped claw. At least two second countersunk through holes 26 are provided on the wedge-shaped claws corresponding to the second bolt holes 25. The second bolt 23 passes through the corresponding second countersunk through holes 26 and is screwed into the interior of the corresponding second bolt hole 25 to fix the corresponding second clamping claw 22 on the second chuck 21.

[0041] Similarly, multiple second bolt holes 25 in each group of second bolt hole assemblies are evenly spaced along the length of the radius of the second chuck 21. They cooperate with the second countersunk through hole 236 and the second bolt 23 to adjust the position of the second clamping claw 22 on the second chuck 21, which can be adapted to the processing of wheel centers of different models and has strong practicality.

[0042] In a preferred embodiment, the side of the wedge-shaped jaw near the center of the second chuck 21 is set as an arc surface to fit the outer circumferential surfaces of the main wheel center 3 and the auxiliary wheel center 4, thereby improving the clamping effect.

[0043] In a preferred embodiment, three second support reference blocks 24 are fixedly disposed on the top surface of the second chuck 21. The three second support reference blocks 24 are L-shaped and are evenly spaced between the three second clamping jaws 22 to ensure the machining reference and accuracy of the main wheel center 3 and the auxiliary wheel center 4.

[0044] In addition, the first clamping jaw 12 in the first clamping mechanism 1 and the second clamping jaw 22 in the second clamping mechanism 2 can be hydraulically adjustable jaws to automatically adjust their positions in their respective chucks.

[0045] The working principle of this utility model:

[0046] (1) Machining of the main wheel core 3

[0047] Specifically as follows:

[0048] When machining the outer circumferential surface of the rim of the main wheel core 3, the first clamping mechanism 1 is used to bring together the three first clamping jaws 12, and fit the inner hole of the main wheel core 3 onto the outer circumferential side of the limiting clamping block 122. The outer end face of the main wheel core 3 is placed on the top surface of the transverse fixing seat 121. Then, the outer end face of the rim of the main wheel core 3 is supported by the first support reference block 15 set on the first chuck 11 to ensure its machining reference. Then, by adjusting the position of the three first clamping jaws 12 on the first chuck 11, the three limiting clamping blocks 122 clamp the inner hole of the main wheel core 3 to complete the clamping and fixing of the main wheel core 3. Then, the exposed surfaces of the main wheel core 3, except for the outer end face of the hub and the outer end face of the rim, are machined.

[0049] When machining the inner hole of the main wheel core 3, the outer end face of the hub, and the outer end face of the rim, the second clamping mechanism 2 is used. The main wheel core 3 and the corresponding gear 5 need to be cold-pressed together and placed on the second chuck 21 for machining. The inner end face of the main wheel core 3 is supported by the three second support reference blocks 24 on the second chuck 21. Then, the outer circumferential surface of the rim of the main wheel core 3 is clamped by the three second clamping jaws 22. Then, the inner hole of the main wheel core 3, the outer end face of the hub, and the outer end face of the rim are machined.

[0050] In summary, the machining process of the main wheel center 3 only requires two reverse rotations, resulting in high machining efficiency, a relatively fixed machining datum, and high machining accuracy.

[0051] (2) Machining of the secondary wheel core 4

[0052] Specifically as follows:

[0053] When machining the outer circumferential surface of the rim of the secondary wheel core 4, the first clamping mechanism 1 is used to bring together the three first clamping jaws 12, and fit the inner hole of the secondary wheel core 4 onto the outer circumferential side of the limiting clamping block 122. The outer end face of the secondary wheel core 4 is placed on the top surface of the transverse fixing seat 121. Then, the outer end face of the rim of the secondary wheel core 4 is supported by the first support reference block 15 set on the first chuck 11 to ensure its machining reference. Then, by adjusting the position of the three first clamping jaws 12 on the first chuck 11, the three limiting clamping blocks 122 clamp the inner hole of the secondary wheel core 4 to complete the clamping and fixing of the secondary wheel core 4. Then, the exposed surfaces of the secondary wheel core 4, except for the outer end face of the hub and the outer end face of the rim, are machined.

[0054] When machining the inner hole, outer end face of the hub, and outer end face of the rim of the secondary wheel core 4, the second clamping mechanism 2 is used. The secondary wheel core 4 needs to be placed on the second chuck 21 for machining. The inner end face of the secondary wheel core 4 is supported by the three second support reference blocks 24 on the second chuck 21. Then, the outer circumferential surface of the rim of the secondary wheel core 4 is clamped by the three second clamping jaws 22. Then, the inner hole, outer end face of the hub, and outer end face of the rim of the secondary wheel core 4 are machined.

[0055] In summary, the machining process of the secondary wheel core 4 only requires two reversals of the secondary wheel core 4, which results in high machining efficiency, relatively fixed machining datum, and high machining accuracy.

[0056] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; 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 the above terms in this application according to the specific circumstances.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping device for a heavy haul railway locomotive steel wheel with a hoop wheel, characterized in that, It includes a first clamping mechanism and a second clamping mechanism, which are respectively mounted and fixed on their respective machine tools; The first clamping mechanism includes a first chuck, on which a plurality of first clamping jaws are provided by first bolts for clamping the inner holes of the main wheel center and the auxiliary wheel center when machining the outer circumferential surface of the rim of the main wheel center and the auxiliary wheel center; the first chuck is provided with a first support reference block for supporting the outer end face of the rim of the main wheel center and the auxiliary wheel center when machining the outer circumferential surface of the rim of the main wheel center and the auxiliary wheel center. The second clamping mechanism includes a second chuck, on which a plurality of second clamping jaws are provided by second bolts for clamping the outer circumferential surfaces of the rims of the main wheel center and the auxiliary wheel center; a second support reference block is provided on the top surface of the second chuck for supporting the inner end face of the main wheel center when machining the inner hole of the main wheel center, the outer end face of the hub, and the outer end face of the rim, and for supporting the inner end face of the auxiliary wheel center when machining the inner hole of the auxiliary wheel center, the outer end face of the hub, and the outer end face of the rim.

2. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 1, characterized in that, Three sets of first bolt hole assemblies are evenly spaced along the circumference on the top surface of the first chuck. Each set of first bolt hole assemblies includes multiple first bolt holes, and the first bolt holes in each set of first bolt hole assemblies are evenly spaced along the length direction of the radius of the first chuck.

3. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 2, characterized in that, The first clamping claw is provided in three sets corresponding to the first bolt hole assembly. Each set of the first clamping claw includes a transverse fixing seat. A limit clamping block is fixedly provided on one end of the top surface of the transverse fixing seat near the center of the first chuck. The transverse fixing seat is provided with at least two first countersunk through holes corresponding to the first bolt holes. The first bolt passes through the corresponding first countersunk through hole and is screwed into the interior of the corresponding first bolt hole to fix the corresponding first clamping claw on the first chuck.

4. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 3, characterized in that, At least one of the first support reference blocks is fixedly disposed on the top surface of the first chuck to ensure the machining reference and accuracy of the main wheel center and the auxiliary wheel center.

5. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 1, characterized in that, Three sets of second bolt hole assemblies are fixedly arranged at uniform intervals along the circumference on the top surface of the second chuck. Each set of second bolt hole assemblies includes multiple second bolt holes, and the second bolt holes in each set of second bolt hole assemblies are evenly spaced along the length direction of the radius of the second chuck.

6. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 5, characterized in that, The second clamping claw is provided in three sets corresponding to the second bolt hole assembly. Each set of the second clamping claw includes a wedge-shaped claw. The wedge-shaped claw is provided with at least two second countersunk through holes corresponding to the second bolt holes. The second bolt passes through the corresponding second countersunk through holes and is screwed into the interior of the corresponding second bolt hole to fix the corresponding second clamping claw on the second chuck.

7. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 6, characterized in that, The wedge-shaped chuck has an arc-shaped surface on the side closest to the center of the second chuck, which is used to fit the outer circumferential surfaces of the main wheel center and the auxiliary wheel center.

8. The heavy duty railway locomotive steel wheel with hoop wheel cast steel wheel center clamp device according to claim 7, characterized in that, The second support reference block is arranged on the top surface of the second chuck, and three second support reference blocks are arranged in L shape and are evenly distributed between the three second clamping jaws, so as to ensure the machining reference and precision of the main wheel center and the auxiliary wheel center.

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