Correcting device for train pull rod after hot forging
By combining the vertical and horizontal clamping devices of the hot forging correction device for train tie rods, the positioning deviation problem caused by the step-by-step correction of the straightness of train tie rods and the U-shaped connection part is solved, and the overall alignment of train tie rods is achieved.
Patent Information
- Application Number
- CN202520500016.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-21
AI Technical Summary
The straightness correction of the train tie rod and the shaping of the U-shaped connector were carried out in two steps, which led to positioning differences and caused the U-shaped connectors at both ends to be misaligned.
A hot forging correction device for train tie rods is designed, comprising a first clamping unit, a second clamping unit, and a third clamping unit arranged sequentially along the axial direction of the train tie rod. Vertical and horizontal clamps are used to clamp the train tie rod in the vertical and horizontal directions, respectively, to achieve overall correction.
The overall alignment of the train tie rod was achieved, ensuring that the U-shaped connection was aligned and eliminating positioning deviations.
Smart Images
Figure CN223888743U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of bar stock forging correction, especially relates to a correction device after hot forging of train pull rod. BACKGROUND
[0002] The middle part of the train pull rod is a round bar stock, and the two ends are U-shaped connecting parts, the current correction needs two-step correction, that is, straightness correction of the bar stock and shaping of the U-shaped connecting parts, since the two-step correction leads to positioning difference, the U-shaped connecting parts at the two ends cannot be aligned, and there is certain deviation. SUMMARY
[0003] The utility model embodiment aims at providing a correction device after hot forging of train pull rod, and aims at solving the technical problem that the current correction needs two-step correction, that is, straightness correction of the bar stock and shaping of the U-shaped connecting parts, since the two-step correction leads to positioning difference, the U-shaped connecting parts at the two ends cannot be aligned, and there is certain deviation.
[0004] The utility model embodiment is realized as follows:
[0005] A correction device after hot forging of train pull rod, the middle part of the train pull rod is a round bar stock, and the two ends are U-shaped connecting parts, the correction device comprises first compression unit, second compression unit and third compression unit which are arranged in sequence along the axial direction of the train pull rod, first compression unit, second compression unit and third compression unit all comprise vertical compressor, first compression unit and second compression unit comprise horizontal compression unit, the vertical compressor vertically compresses the middle part of the train pull rod and the U-shaped connecting parts at the two ends, and the horizontal compression unit horizontally compresses the U-shaped connecting parts at the two ends of the train pull rod, so as to realize the correction after hot forging of the train pull rod.
[0006] Further, the first compression unit, the second compression unit and the third compression unit are of the same structure, a first correction die seat is fixed in the first compression unit, and a third correction die seat is fixed in the third compression unit, and the first correction die seat and the third correction die seat are of the same structure.
[0007] Further, the third correction die seat comprises a compression die and a bottom die, the bottom die is provided with a bottom die cavity, the vertical section of the bottom die cavity along the axial direction of the train pull rod is conical, the end of the cone has a circular arc transition, the bottom of the same compression die is conical along the vertical section of the axial direction of the train pull rod, the end of the cone has a circular arc transition, and the bottom die cavity cooperates with the bottom of the compression die; the side surface of the bottom die is further provided with a bottom die positioning plate for positioning and limiting one side of the U-shaped connecting part.
[0008] Further, the first pressing unit comprises a C-shaped fixing seat, a pair of first guide rods are symmetrically arranged and fixed on the top end of the C-shaped fixing seat, the bottom of the first guide rod is inserted into the end of the first fixing plate, the first fixing plate is fixed on the inner side of the top end of the C-shaped fixing seat, the first fixing plate is fixed with a first hydraulic cylinder, the first piston rod of the first hydraulic cylinder is fixed with a first end plate through a first joint; the bottom surface of the first end plate of the first pressing unit and the third pressing unit is fixed with a pressing die, the bottom end of the C-shaped fixing seat of the first pressing unit and the third pressing unit is fixed with a supporting plate, the top surface of the supporting plate is fixed with a bottom die with a tapered cross-section cavity; and the bottom surface of the first end plate of the second pressing unit is fixed with a flat pressing die.
[0009] Further, the side surface of the second pressing unit is provided with a protective plate.
[0010] Further, the side surface of the first pressing unit is fixed with a first transverse pressing unit, the third pressing unit is fixed with a second transverse pressing unit, and the first transverse pressing unit and the second transverse pressing unit are the same in structure.
[0011] Further, the first transverse pressing unit comprises a vertical plate, the vertical plate is fixed on the bottom side of the C-shaped fixing seat, a pair of second guide rods are symmetrically arranged and inserted into the top of the vertical plate, the end of the second guide rod is fixed with a second fixing plate, the second fixing plate and the second piston rod end of the second hydraulic cylinder are fixed together through a second joint, the second hydraulic cylinder is fixed on the top center, and the second fixing plate pushes the side surface of the U-shaped connecting part to the side surface of the pressing die under the pushing of the second hydraulic cylinder and is pressed.
[0012] The positive effect of the novel device is that: the vertical pressing device vertically presses the middle part and both ends of the train pull rod, then the horizontal pressing unit horizontally presses both ends of the train pull rod, and the U-shaped connecting part of the train pull rod is also shape-corrected while the vertical and horizontal directions are corrected. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a three-dimensional structure schematic view of the correction device for the hot-forged train pull rod.
[0014] Figure 2 is Figure 1 the front view of the correction device for the hot-forged train pull rod shown in the figure.
[0015] Figure 3 is Figure 2 the A-A sectional view of the correction device for the hot-forged train pull rod shown in the figure, wherein the structure of the first correction die holder or the third correction die holder and the structure of the third pressing unit are shown.
[0016] Figure 4 is Figure 2 Figure 2 is a structure schematic view of the second correction die seat of the second pressing unit in the A-A direction section view of the correction device for hot forging of a train pull rod shown in the utility model;
[0017] Figure legend: 1 - base, 2 - first correction die seat, 3 - hydraulic station, 4 - first pressing unit, 5 - second pressing unit, 6 - third pressing unit, 601 - first guide rod, 602 - first hydraulic cylinder, 603 - first fixed plate, 604 - first piston rod, 605 - first joint, 606 - first fixed plate, 7 - third correction die seat, 8 - second transverse pressing unit, 801 - vertical plate, 802 - second fixed plate, 803 - second joint, 804 - second hydraulic cylinder, 805 - second guide rod, 9 - protective plate, 10 - second correction die seat, 11 - first transverse pressing unit, 12 - pressing die, 13 - bottom die positioning plate, 14 - bottom die cavity, 15 - positioning platform. DETAILED DESCRIPTION
[0018] The utility model will be described in detail below in combination with the drawings and specific embodiments:
[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.
[0021] As Figures 1 to 4The diagram shows a structural diagram of a correction device for a hot-forged train tie rod according to an embodiment of the present invention. The train tie rod has a circular bar in the middle and U-shaped connecting parts at both ends. The correction device includes a first pressing unit 4, a second pressing unit 5, and a third pressing unit 6 arranged sequentially along the axial direction of the train tie rod. Each of the first pressing unit 4, the second pressing unit 5, and the third pressing unit 6 includes a vertical pressing device. The first pressing unit 4 and the second pressing unit 5 include a horizontal pressing unit. The vertical pressing device presses the middle and U-shaped connecting parts at both ends of the train tie rod vertically, and the horizontal pressing unit presses the U-shaped connecting parts at both ends of the train tie rod horizontally to achieve correction of the hot-forged train tie rod.
[0022] In this embodiment of the invention, after the middle and both ends of the train rod are vertically pressed by the vertical clamping device, the two ends of the train rod are horizontally pressed by the horizontal clamping unit. While achieving vertical and horizontal correction, the shape of the U-shaped connection at the end of the train rod is also corrected.
[0023] Specifically, such as Figures 1 to 4 The diagram shows a structural design of a correction device for a hot-forged train tie rod. The train tie rod has a circular bar in the middle and U-shaped connecting parts at both ends. The correction device includes a first clamping unit 4, a second clamping unit 5, and a third clamping unit 6 arranged sequentially along the axial direction of the train tie rod. Each of the first clamping unit 4, the second clamping unit 5, and the third clamping unit 6 includes a vertical clamping device. The first clamping unit 4 and the second clamping unit 5 include a horizontal clamping unit. The vertical clamping device vertically clamps the middle and U-shaped connecting parts at both ends of the train tie rod, while the horizontal clamping unit horizontally clamps the U-shaped connecting parts at both ends of the train tie rod to achieve correction of the hot-forged train tie rod.
[0024] The first pressing unit 4, the second pressing unit 5, and the third pressing unit 6 have the same structure. The first pressing unit 4 has a first correction mold base 2 fixed inside, and the third pressing unit 6 has a third correction mold base 7 fixed inside. The first correction mold base 2 and the third correction mold base 7 have the same structure. Taking the third correction mold base 7 as an example, the third correction mold base 7 includes a pressing mold 12 and a bottom mold. The bottom mold has a bottom mold cavity 14. The vertical cross section of the bottom mold cavity 14 along the train rod axis is conical, and the end of the conical shape has a rounded transition. Similarly, the bottom of the pressing mold 12 has a conical cross section along the train rod axis, and the end of the conical shape has a rounded transition. The bottom mold cavity 14 fits with the bottom of the pressing mold 12. The side of the bottom mold also has a bottom mold positioning plate 16, which is used to position and limit one side of the U-shaped connection.
[0025] The first pressing unit 4, the second pressing unit 5 and the third pressing unit 6 are structurally identical, each comprising a C-shaped fixing seat 607, a pair of first guide rods 601 symmetrically arranged and fixed at the top end of the C-shaped fixing seat 607, a vertical press comprising the bottom of the first guide rod 601 inserted into the end of a first fixed plate 603, the first fixed plate 603 fixed inside the top end of the C-shaped fixing seat 607, the first fixed plate 603 fixed with a first hydraulic cylinder 602, the first piston rod 604 of the first hydraulic cylinder 602 fixed with a first end plate 606 through a first joint; wherein the bottom surface of the first end plate 606 of the first pressing unit 4 and the third pressing unit 6 is fixed with a pressing die 12, the bottom end of the C-shaped fixing seat 607 of the first pressing unit 4 and the third pressing unit 6 is fixed with a supporting plate, the top surface of the supporting plate is fixed with a bottom die with a tapered cross-section cavity; while the bottom surface of the first end plate 606 of the second pressing unit 5 is fixed with a flat pressing die 16.
[0026] Among them, the side of the second pressing unit 5 is provided with a protective plate 9, which can prevent the train pull rod from falling and injuring or scalding the operator, and can assist the train pull rod in the design scheme; the side of the first pressing unit 4 is fixed with a first transverse pressing unit 11, and the third pressing unit 6 is fixed with a second transverse pressing unit 8, the first transverse pressing unit 11 and the second transverse pressing unit 8 are structurally identical, each comprising a vertical plate 801 fixed to the bottom side of the C-shaped fixing seat 607, a pair of second guide rods 805 symmetrically arranged and inserted into the top of the vertical plate 801, the end of the second guide rod 805 fixed with a second fixed plate 802, the second fixed plate 802 and the second piston rod end of the second hydraulic cylinder 804 fixed together through a second joint 803, the second hydraulic cylinder 804 fixed to the top center of 801, under the push of the second hydraulic cylinder 804, the second fixed plate 802 pushes the side of the U-shaped connecting part to the side of the pressing die 12 and presses it.
[0027] The second pressing unit 5 is provided with a second correction die holder 10, such as Figure 4 The second correction die holder 10 comprises a flat pressing die 16 and a bottom die, the bottom die is provided with any cavity and a positioning platform 15 with a flat top, the vertical cross-section of the bottom of the same flat pressing die 16 along the axial direction of the train pull rod is rectangular, and the bottom surface of the flat pressing die 16 cooperates with the top surface of the flat pressing die 16; the side of the bottom die is also provided with a bottom die positioning plate 13 for positioning and limiting one side of the U-shaped connecting part.
[0028] The foregoing has outlined some aspects and features of various embodiments, which should be construed as being illustrative only. Other beneficial results can be attained by applying the disclosed information in a different manner or by combining aspects of the disclosed embodiments. Other aspects and a more comprehensive understanding can be obtained by referring to the detailed description of the exemplary embodiments in connection with the accompanying drawings.
[0029] The above embodiments have made a detailed description of the present application. Of course, the above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or reductions, and replacements made by related technical personnel within the essential scope of the present application also belong to the protection scope of the present application.
Claims
1. A correction device for hot-forged train tie rods, characterized in that, The train tie rod has a circular bar in the middle and U-shaped connecting parts at both ends. The correction device includes a first pressing unit, a second pressing unit, and a third pressing unit arranged sequentially along the axial direction of the train tie rod. Each of the first pressing unit, the second pressing unit, and the third pressing unit includes a vertical pressing device. The first pressing unit and the second pressing unit include a horizontal pressing unit. The vertical pressing device presses the middle and U-shaped connecting parts at both ends of the train tie rod vertically, and the horizontal pressing unit presses the U-shaped connecting parts at both ends of the train tie rod horizontally to achieve correction of the train tie rod after hot forging.
2. The correction device for hot forging of a train tie rod according to claim 1, characterized in that, The first, second, and third pressing units have the same structure. The first pressing unit has a first correction mold fixed inside it, and the third pressing unit has a third correction mold fixed inside it. The first and third correction molds have the same structure.
3. The correction device for hot forging of a train tie rod according to claim 2, characterized in that, The third correction mold base includes a pressure mold and a bottom mold. The bottom mold has a bottom mold cavity, and the vertical cross-section of the bottom mold cavity along the train rod axis is conical with a rounded transition at the end of the conical shape. Similarly, the bottom of the pressure mold is conical along the vertical cross-section of the train rod axis with a rounded transition at the end of the conical shape. The bottom mold cavity fits with the bottom of the pressure mold. The side of the bottom mold is also provided with a bottom mold positioning plate for positioning and limiting one side of the U-shaped connection.
4. The correction device for hot forging of a train tie rod according to claim 3, characterized in that, The first clamping unit includes a C-shaped fixing seat, and a pair of symmetrically arranged first guide rods are fixed to the top end of the C-shaped fixing seat. The vertical clamping device includes the bottom of the first guide rods inserted into the end of the first fixing plate. The first fixing plate is fixed to the inner side of the top end of the C-shaped fixing seat. The first fixing plate is fixed with a first hydraulic cylinder. The first piston rod of the first hydraulic cylinder is fixed with a first end plate through a first connector. The bottom surface of the first end plate of the first clamping unit and the third clamping unit is fixed with a pressure mold. The bottom end of the C-shaped fixing seat of the first clamping unit and the third clamping unit is fixed with a support plate. The top surface of the support plate is fixed with a bottom mold with a conical cavity in cross section. The bottom surface of the first end plate of the second clamping unit is fixed with a flat pressure mold.
5. A correction device for hot-forged train tie rods according to any one of claims 1 to 4, characterized in that, The second clamping unit has a protective plate on its side.
6. The correction device for hot forging of a train tie rod according to claim 5, characterized in that, The first pressing unit has a first transverse pressing unit fixed to its side, and the third pressing unit has a second transverse pressing unit fixed to it. The first transverse pressing unit and the second transverse pressing unit have the same structure.
7. The correction device for hot forging of a train tie rod according to claim 6, characterized in that, The first transverse pressing unit includes a vertical plate, which is fixed to the bottom side of the C-shaped fixing seat. A pair of symmetrically arranged second guide rods are inserted into the top of the vertical plate. The ends of the second guide rods are fixed with second fixing plates. The second fixing plates are fixed together with the ends of the second piston rods of the second hydraulic cylinder through a second joint. The second hydraulic cylinder is fixed at the top center. Under the push of the second hydraulic cylinder, the second fixing plate pushes the side of the U-shaped connecting part to the side of the pressing mold and presses it.